Stator for an alternator
Abstract
The present invention obtains a stator of an alternator with improved corrosion resistance and insulation, and improved assembly and productivity, and improved contact between the same address and crossover wiring. In the stator winding, six first windings per turn are arranged at a pitch of one slot by winding the wire 30 so as to occupy the inner layer and the outer layer alternately in the slot depth direction in the slot 15a every 6 slots. A pair of a first winding group in which there is a first winding and a second winding group in which six second windings per turn are arranged at a pitch of one slot, which is constituted by reversing the element wire 30 at an electrical angle with the first winding by 180 degrees. It has two sets of winding assembly consisting of And, crossover connection of the same address of the 3-phase AC winding of each group (C1-1) is placed on an 8-slot pitch.
Term
Term ended
Projected expiry passed 16 October 2020, 5.9 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
2 claims: 2 independent, 0 dependent
- 1축방향으로 뻗는 슬롯이 원주방향에 소정피치로 복수형성된 적층철심으로 되는 원통상의 고정자철심과, 장척의 소선이, 상기 고정자철심의 단면측의 상기 슬롯외에서 되돌려져서, 소정슬롯수마다에 상기 슬롯내에서 슬롯깊이 방향으로 내층과 외층을 교대로 차지하도록 감겨져서 되는 복수의 권선으로 되는 고정자권선을 가지고, 상기 복수의 권선은, 상기 소선을 상기 소정슬롯수마다에 상기 슬롯내에서 슬롯깊이 방향으로 내층과 외층을 교대로 차지하도록 감아서 구성된 1턴의 제1권선이 1슬롯피치로 상기 소정슬롯수와 같은 개수만큼 배열되어되는 제1권선군과, 상기 소선을 소정슬롯수마다에 상기 슬롯내에서 슬롯길이 방향으로 내층과 외층을 교대로 차지하도록, 또한, 상기 제1권선과 전기각으로 180˚오프셋하여 반전권장하여 구성된 1턴의 제2권선이 1슬롯피치로 상기 소정슬롯수와 같은 개수만큼 배열되어 되는 제2권선군과의 쌍으로 구성된 적어도 1조의 권선어셈블리로구성되며, 상기 고정자권선은, 매극매상 n개의 슬롯을 갖는 각상이 전기각으로 120˚위상차가 있는 3상 교류권선으로 구성되고, 상기 권선어셈블리내의 동일상을 구성하는 상기 제1권선과 상기 제2권선이 각각 동일번지에서 동일번지 크로스오버결선에 의해 결선되며, 또한 각상의 동일번지 크로스오버결선이 4n이상의 슬롯피치로 배치되어있는것을 특징으로하는 교류발전기의 고정자.
- 2축방향으로 뻗는 슬롯이 원주방향에 소정피치로 복수형성된 척층철심으로 되는 원통상의 고정자철심과, 정척의 소선이 상기 고정자 철심의 단면측의 상기 슬롯외에서 되돌려져서 소정슬롯수마다에, 상기 슬롯내에서 슬롯깊이 방향으로 내층과 외층을 교대로 차지하도록 감겨져서 되는 복수의 권선으로되는 고정자권선을 가지고, 상기 복수의 권선은 상기 소선을 상기 소정슬롯수마다에 상기 슬롯내에서 슬롯깊이 방향으로 내층과외층을 그대로 차지하도록 감아서 구성된 1턴의 제1권선이 1슬롯피치로 상기 소정슬롯수와 같은 개수만큼 배열되어되는 제1의 권선군과, 상기 소선을 소정슬롯수마다에 상기 슬롯내에서 슬롯깊이 방향으로 내층과 외층을 교대로 차지하도록, 또한, 상기 제1권선과 전기각으로 180도 오프셋하여 반전권장하여 구성된 1턴의 제2권선이 1슬롯피치도 상기 소정슬롯수와 같은 개수만큼 배열되어되는 제2권선군과의 쌍으로 구성된 적어도 1조의 권선어셈블리로 구성되며, 상기 고정자권선은 매극매상 n개의 슬롯을 갖는 각상이 전기각으로 120도 위상차가 있는 3상 교류권선으로 구성되고, 상기 권선어셈블리내의 동일상을 구성하는 상기 제1권선과 상기 제2권선이 인접하는 상간에서 다른 번지로 동일번지 크로스오버결선에 의해 결선되며, 또한 각상의 동일번지 크로스오버결선이 2n이상의 슬롯피치로 배치되어 있는것을 특징으로하는 교류발전기의 고정자.
Independent claims2
41 paragraphs, as filed
stator of an alternator
1 is a cross-sectional view showing the configuration of an alternator for a vehicle according to Embodiment 1 of the present invention;
Fig. 2 is a perspective view showing a stator of an alternator for a vehicle according to Embodiment 1 of the present invention;
Fig. 3 is a front view showing the main part of a stator of the vehicular alternator according to the first embodiment of the present invention;
Fig. 4 is a front view for explaining the connection state of one phase of the stator windings in the vehicle alternator according to the first embodiment of the present invention;
Fig. 5 is a front view for explaining the connection state of three phases of the stator windings in the vehicle alternator according to the first embodiment of the present invention;
Fig. 6 is a perspective view showing a three-phase AC connection terminal in the vehicle alternator according to the first embodiment of the present invention;
7 is a circuit diagram of a vehicle alternator according to Embodiment 1 of the present invention;
Fig. 8 is a view for explaining a manufacturing process of a winding assembly constituting a stator winding applied to a vehicle alternator according to Embodiment 1 of the present invention;
9 is a view for explaining a manufacturing process of a winding assembly constituting a stator winding applied to a vehicle alternator according to Embodiment 1 of the present invention; FIG.
Fig. 10 is a view showing a winding assembly constituting a stator winding applied to a vehicle alternator according to Embodiment 1 of the present invention;
11 is a view showing a winding assembly constituting a stator winding applied to a vehicle alternator according to Embodiment 1 of the present invention;
Fig. 12 is a perspective view showing main parts of a core wire constituting a stator winding applied to a vehicle alternator according to Embodiment 1 of the present invention;
Fig. 13 is a view for explaining the arrangement of the wires constituting the stator windings applied to the vehicle alternator according to the first embodiment of the present invention;
Fig. 14 is a view for explaining the structure of a stator iron core applied to the vehicle alternator according to the first embodiment of the present invention;
15 is a process cross-sectional view for explaining a manufacturing process of a stator applied to the vehicle alternator according to Embodiment 1 of the present invention;
Fig. 16 is a process cross-sectional view for explaining a manufacturing process of a stator applied to the vehicle alternator according to the first embodiment of the present invention;
Fig. 17 is a front view for explaining the connection state of three phases of the stator windings in the vehicle alternator according to the second embodiment of the present invention;
Fig. 18 is a front view for explaining the connection state of three phases of the stator windings in the vehicle alternator according to the third embodiment of the present invention;
19 is a front view for explaining the connection state of one phase of the stator windings in the vehicle alternator according to the fourth embodiment of the present invention;
Fig. 20 is a front view for explaining the connection state of three phases of the stator windings in the vehicle alternator according to the fourth embodiment of the present invention;
Fig. 21 is a perspective view showing a stator in the vehicle alternator according to the fifth embodiment of the present invention;
22 is a side view showing the main part of a stator of a conventional vehicle alternator;
23 is a perspective view showing a conductor segment applied to a stator of a conventional vehicle alternator;
24 is a perspective view of the main part of a stator of a conventional vehicle alternator as viewed from the front side;
25 is a perspective view of a main part of a stator of a conventional vehicle alternator as viewed from the rear side.
<Explanation of Symbols for Main Parts of Drawings>
8: stator 15: stator iron core
15a: slot 16: stator winding
30: element wire 31: first winding
32: second winding 33: third winding
34: fourth winding 35: fifth winding
36: 6th winding
90, 90A, 90B: winding assembly 100: 3-phase AC connection terminal
101: metal terminal for neutral point connection 101b: neutral point lead out
102: metal terminal for crossover connection 103: insulating resin
104: insulating resin 150: three-phase AC winding
C<sub>1-1</sub>,C<sub>-4</sub>: Same address crossover connection
<background-art><p>A stator of an alternator with improved corrosion resistance and insulation, as well as improved assembly and productivity, while eliminating contact with the same-address crossover connection is obtained.</p><p>The present invention relates to, for example, a stator of an alternator driven by an internal combustion engine, and more particularly, to a stator structure of an alternator for a vehicle mounted on a vehicle such as a passenger car or truck.</p><p>22 is a side view showing the main part of the stator of the conventional vehicular alternator described in Japanese Patent No. 2927288, for example, and FIG. 23 is a perspective view showing a conductor segment applied to the stator of the conventional vehicular alternator shown in FIG. 22, FIG. 24 and 25 are perspective views viewed from the front side and the rear side, respectively, of main parts of the stator of the conventional vehicle alternator shown in FIG. 22 . </p><p>22 to 25, the stator 50 includes a stator core 51, a stator winding 52 wound around the stator core 51, and a slot 51a mounted in a slot 51a to connect the stator winding 52 to the stator core. 51) and an insulator (53) insulated.</p><p>The stator core 51 is a cylindrical laminated iron core laminated by stacking thin steel plates, and a plurality of slots 51a extending in the axial direction are provided in the circumferential direction at a predetermined pitch so as to open on the inner circumferential side.</p><p>Here, 96 slots 51a are formed to accommodate two sets of three-phase windings corresponding to the number of magnetic poles 16 of the rotor (not shown).</p><p>The stator winding 52 is formed by joining a plurality of short conductor segments 54 to form a predetermined winding pattern.</p><p>The conductor segments 54 are formed of a copper wire with a spherical cross section covered with insulation in a substantially U shape, and are inserted into each of the two slots 51a 6 slots (1 pole pitch) apart from the rear side in the axial direction. have.</p><p>Then, the ends extending toward the front side of the conductor segment 54 are joined to form the stator winding 52 .</p><p>Specifically, in each set of slots 51a 6 slots apart, one conductor segment 54 is positioned at the first position on the outer periphery in one slot 51a from the rear side, and at the outer periphery in the other slot 51a. Inserted at the second position, another conductor segment 54 is positioned at the third position from the outer periphery in one slot 51a from the rear side and at the fourth position from the outer periphery in the other slot 51a. has been inserted</p><p>Therefore, in each slot 15a, four linear portions 54a of the conductor segments 54 are arranged in a row in the radial direction.</p><p>Then, the end 54b of the conductor segment 54 extending from the first position to the front side on the outer periphery of one slot 51a and the other slot 51a 6 slots away from the slot 51a in a clockwise direction. The end portion 54b of the conductor segment 54 extending from the second position to the front side from the outer peripheral side of the inner body is joined to form a two-turn outer layer winding.</p><p>Further, the end 54b of the conductor segment 54 extending from the third position on the outer periphery side in one slot 51a to the front side, and the other slot 51a separated by 6 slots in the clockwise direction from the slot 51a. ), the end 54b of the conductor segment 54 extending from the fourth position to the front side is joined to form an inner winding of two turns.</p><p>In addition, the outer layer winding and the inner layer winding composed of the conductor segments 54 inserted into the slots 51a of each set 6 slots apart are connected in series to form 4 turns of winding for one phase.</p><p>Similarly, at the slot position to be inserted into the conductor segment 54, 6 phases of windings of 4 turns each are formed by offsetting one slot at a time.</p><p>And, these windings are AC-connected for three phases at a time to constitute a stator winding 52 which becomes two sets of three-phase AC windings.</p><p>In the conventional stator 50 configured as described above, on the rear side of the stator core 51, the turn portions 54c of the two conductor segments 54 inserted into the slots 51a of the same set are arranged in a radial direction.</p><p>As a result, the turn portions 54c are arranged in two rows in the circumferential direction to constitute a coil end group on the rear side.</p><p>On the other hand, on the front side of the stator core 51, the end 54b of the conductor segment 54 extending from the first position on the outer peripheral side in one slot 51a to the front side and the outer peripheral side in the slot 51a 6 slots apart a junction with the end 54b of the conductor segment 54 extending from the second position to the front side, and the end portion of the conductor segment 54 extending from the third position to the front side from the outer periphery side in one slot 51a Joints between the ends 54b and the ends 54b of the conductor segments 54 extending from the fourth position on the outer circumferential side to the front side in the slot 51a 6 slots apart are arranged in a radial direction.</p><p>As a result, the junctions between the ends 54b are arranged in two rows in the circumferential direction to constitute a coil end group on the front side.</p></background-art><tech><p>In the stator 50 of this conventional vehicular alternator, the short conductor segment 54 in which the stator winding 52 is formed into a substantially U-shape as described above is inserted into the slot 51a of the stator magnet core 51 from the rear side. It is formed by joining the end portions 54b of the conductor segments 54 that are inserted and extended toward the front side.</p><p>Therefore, the front side coil end group is constituted by arranging the junctions between the ends 54b for which the insulation film has been lost due to soldering or welding in the circumferential direction, so that the coil end structure is easily corroded by water. and corrosion resistance was very low.</p><p>In addition, since the coil end group on the front side is composed of two rows of 96 junctions, that is, 192 junctions, the junctions are easily short-circuited, and short circuit accidents are likely to occur.</p><p>In addition, a large number of short conductor segments 54 must be inserted into the stator core 51 and the end portions 54b must be joined together by welding, soldering, etc., and workability is remarkably reduced.</p><p>In addition, the amount of press-fitting of the conductor segment 54 into the slot 51 requires more than the axial length of the stator core 51, and it is easy to damage the insulating film, and the quality after the product is reduced.</p><p>In addition, when the end portions 54b are joined together, short circuits between the joint portions due to solder run-off or welding melt-down frequently occur, and the productivity is remarkably reduced.</p><p>Further, in the conventional stator 50, the end portions 54b of the conductor segments 54 are joined together by clamping a part of them with a jig and soldering or welding the junctions.</p><p>Therefore, since the clamping area by the jig is required and swelling of the soldering part or the welding part occurs, the height of the coil end is high and the joint part is also narrowed.</p><p>Further, when the ends 54b of the conductor segments 54 are welded together, the conductor segment 54 softens due to the temperature rise during welding, and the rigidity as a stator decreases.</p><p>As a result, when the conventional stator 50 is mounted on a vehicle alternator, the leakage reactance of the coil of the coil end portion is increased to deteriorate the output, and the ventilation resistance is increased to deteriorate the wind noise, and the rigidity is lowered. The effect of reducing magnetic noise was decreasing.</p><p>The present invention uses a winding assembly in which a plurality of one-turn windings made of a continuous line are arranged under a plurality of arrays in view of the prior technical tasks as described above, and the junction points at the coil end are significantly reduced to improve corrosion resistance and insulation. , In addition, as the stator core of the winding is recommended, assembling and productivity are improved, and at the same time, the arrangement of the wiring between the windings constituting the three-phase AC winding is devised, and the short circuit between the wiring is prevented in advance for reliability. An object of the present invention is to obtain a stator of an alternator in which the improvement of</p></tech>
<p>The alternator according to the present invention includes a cylindrical stator iron core comprising a laminated iron core in which a plurality of slots extending in the axial direction are formed at a predetermined pitch in the circumferential direction, and a long wire is returned outside the slot on the end face of the stator iron core, and a stator winding comprising a plurality of windings wound so as to alternately occupy inner and outer layers in the slot depth direction within the slot for every number of slots, wherein the plurality of windings include the strands in the slot at every predetermined number of slots. a first winding group in which the number of first windings per turn configured by winding alternately occupying the inner and outer layers in the slot depth direction is arranged at a pitch of one slot equal to the number of the predetermined number of slots; The second winding of one turn, which is configured by alternately occupying the inner layer and the outer layer in the slot in the slot depth direction, and electrically offset by 180 degrees from the first winding, is inverted in one slot pitch and is equal to the predetermined number of slots. Consists of at least one set of winding assemblies consisting of pairs with a second winding group arranged in the same number, The stator winding is composed of a three-phase alternating current winding in which each phase having n slots in each pole phase has a phase difference of 120 degrees at an electric angle, and the first winding and the second winding constituting the same phase in the winding assembly are the same. It is connected by the same address crossover connection from the address, and the same address crossover connection of each phase is arranged with a slot pitch of 4n or more.</p><p>In addition, a cylindrical stator iron core comprising a laminated iron core in which a plurality of slots extending in the axial direction are formed at a predetermined pitch in the circumferential direction, and a long strand are returned outside the slot on the end face side of the stator core, and the number of the above-mentioned A stator winding comprising a plurality of windings wound so as to alternately occupy inner and outer layers in a slot in a slot depth direction, wherein the plurality of windings cause the strand to be wound into an inner layer in the slot depth direction at every predetermined number of slots. a first winding group in which the number of first windings per turn configured to be wound alternately occupying the outer layer and the same number of first windings as the predetermined number of slots are arranged at one slot pitch; The number of second windings per turn, which is configured by alternately occupying the inner and outer layers in the depth direction, and by offsetting the first winding by 180 degrees at an electrical angle and reversing it, is arranged at a pitch of one slot equal to the number of the predetermined slots. Consists of at least one set of winding assemblies consisting of two phases with a second winding group, The stator winding is composed of a three-phase AC winding with each phase having a phase difference of 120 degrees at an electric angle, each phase having n slots for each pole, and the first winding and the second winding constituting the same phase in the winding assembly are adjacent to each other. It is connected by the same address crossover wiring from phases to different addresses, and the same address crossover wiring of each phase is arranged with a slot pitch of 2n or more.</p><p>In addition, two sets of the winding assemblies are wound in two rows in the radial direction on the stator core, and the first and second windings in which each phase constituting the three-phase AC winding is wound in the same slot group are connected in series to 4 It is composed of windings of turns.</p><p>Further, in each phase of the three-phase AC winding, the winding ends of the first and second windings between the two sets of the winding assemblies are connected by crossover connection of two adjacent addresses, and the first and the second windings in the winding assembly of one set are connected. The winding ends of the 1st and 2nd windings are connected by a crossover connection of the same address in one place, and it is composed of 4 turns of winding.</p><p>Further, in each phase of the three-phase AC winding, the winding ends of the first and second windings in the winding assembly of each set are connected by crossover wiring at the same address, respectively, and the above-mentioned between the two sets of winding assemblies. The winding ends of the first and second windings are connected by one adjacent address crossover wire, and are composed of four turns of winding.</p><p>In addition, three sets of the winding assemblies are wound in three rows in a radial direction on the stator iron core, and each phase constituting the three-phase alternator is wound in the same slot group by connecting the first and second windings in series. It consists of 6 turns of winding.</p><p>In addition, the same address crossover connection is performed using a metal terminal for crossover connection.</p><p>In addition, the winding end constituting the neutral point of the three-phase AC generator is connected using a metal terminal for the middle fiber point connection.</p><p>In addition, the neutral point lead out is integrally formed with the metal terminal for the neutral point connection.</p><p>In addition, the metal terminal for crossover connection and the metal terminal for neutral point connection are integrated with an insulating resin.</p><p>In addition, the first and second windings are connected by arc welding.</p><p>Moreover, the cross-sectional shape of the said element wire is substantially flat shape.</p><p>Further, the coil end of the stator winding is molded with an insulating resin.</p><p>embodiment of the invention</p><p>below. EMBODIMENT OF THE INVENTION Embodiment of this invention is described with respect to drawings.</p><p>Embodiment 1</p><p>1 is a cross-sectional view showing the configuration of a vehicle alternator according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing a stator of this vehicle alternator, and FIG. 4 is a front view explaining the connection state of one phase of the stator winding in this vehicle alternator, FIG. 5 is a front view illustrating the wiring state of three phases of the stator winding in this vehicle alternator, 6 is a perspective view showing a three-phase AC connection terminal in the stator of the vehicle alternator, FIG. 7 is a circuit diagram of the vehicle alternator, and FIGS. 8 and 9 are stator windings applied to the vehicle alternator, respectively. It is a drawing explaining the manufacturing process of a winding assembly. </p><p>Fig. 10 is a view showing a winding assembly constituting the stator winding of this vehicle alternator, Fig. 10 (a) is a second side view, and Fig. 10 (b) is a plan view thereof.</p><p>11 is a view showing a winding assembly constituting a stator winding applied to this vehicle alternator, FIG. 11(a) is a side view thereof, and FIG. 11(b) is a plan view thereof.</p><p>12 is a perspective view showing main parts of the elements constituting the stator winding applied to the vehicle alternator, and FIG. 13 is a view for explaining the arrangement of the elements constituting the stator winding applied to the vehicle alternator.</p><p>Fig. 14 is a rear view of Fig. 14 (b) applied to this vehicle alternator.</p><p>15 is a cross-sectional view illustrating a manufacturing process of a stator applied to this vehicle alternator, and FIG. 16 is a process cross-sectional view illustrating a manufacturing process of a stator applied to this vehicle alternator.</p><p>In Fig. 1, in the vehicle alternator, the rotor 7 of the Randel type is freely mounted through the shaft 6 in the case 3 composed of the aluminum front bracket 1 and the rear bracket 2, and , the stator 8 is fixed to the inner wall surface of the case 3 so as to cover the outer peripheral side of the rotor 7 is configured.</p><p>The shaft 6 is rotatably supported by the front bracket 1 and the rear bracket 2 .</p><p>A pulley 4 is fixed to one end of the shaft 6, and the rotational torque of the engine can be transmitted to the shaft 6 through a belt (not shown).</p><p>A slip ring (9) for supplying current to the rotor (7) is fixed to the other end of the shaft (6), and a pair of brushes (10) are installed in the case (3) so that they slide into contact with the slip ring (9). It is housed in the holder (11).</p><p>A regulator (18) for adjusting the magnitude of the AC voltage generated in the stator (8) is attached to the heat sink (17) fitted to the brush holder (11).</p><p>A rectifier 12 electrically connected to the stator 8 and rectifying an alternating current generated in the stator 8 into a direct current is mounted in the case 3 .</p><p>The rotor 7 includes a rotor coil 13 that generates magnetic flux by flowing an electric current, and is installed to cover the rotor coil 13, and a pair of pole cores 20 generated from the rotor coil 13. , (21) is made of iron, and 8 colo-shaped claw-shaped magnetic poles 22 and 23, respectively, are installed on the outer periphery at an isometric pitch in the circumferential direction, and the claw-shaped magnetic poles 22 and 23 are engaged. It is fixed to the shaft (6) opposite to each other.</p><p>Further, the fan 15 is fixed to both ends of the rotor 7 in the axial direction.</p><p>In addition, intake holes 1a and 2a are provided in the axial end surfaces of the front bracket 1 and the rear bracket 2, and the exhaust holes 1b and 2b are connected to the front bracket 1 and the rear bracket 2 In the outer periphery of (2), on both shoulders, the front side and the rear side of the stator winding 16 are provided oppositely to the radially outer side of the coil ends 16a and 16b.</p><p>As shown in Figs. 2 and 3, the stator 8 includes a stator core 15 made of a cylindrical laminated iron core in which a plurality of slots 15a extending in the axial direction are formed at a predetermined pitch in the circumferential direction; A stator winding 16 wound around 15, and an insulator 19 fitted in each slot 15a to electrically insulate the stator winding 16 and the stator core 15 are provided.</p><p>The stator winding 16 is provided with two sets of winding assemblies 90 arranged in two rows in the radial direction.</p><p>In the winding assembly (90), one wire (30) is returned outside the slot (15a) on the end face of the stator core (15), so that the inner layer and the outer layer are alternately formed in the slot (15a) in the slot depth direction at every predetermined number of slots. It is composed of a plurality of windings wound with wave windings to occupy.</p><p>Then, a plurality of windings are three-phase AC-connected using the three-phase AC wiring terminal 100 to constitute two sets of three-phase AC windings 160 to be described later.</p><p>Also, in FIGS. 2 and 3, O<sub>a</sub>, O<sub>b</sub>, O<sub>c</sub>, N<sub>a</sub>, N<sub>b</sub>, N<sub>c</sub>denotes the output line and neutral point of each phase of a set of three-phase AC winding 160, and Nabc denotes the neutral point lead wire of a set of three-phase AC winding 160,<sub>a</sub>',O<sub>b</sub>',O<sub>c</sub>',N<sub>a</sub>',N<sub>b</sub>',N<sub>c</sub>' also indicates the output line and neutral point of each phase of a set of three-phase AC winding 160, and N<sub>a</sub>'b<sub>c</sub>' also indicates a neutral point lead wire of a set of three-phase AC wiring 160 .</p><p>Also, C<sub>1-1</sub>indicates the same address crossover connection between addresses 1, which will be described later, and C<sub>2-3</sub>indicates the crossover connection part of the adjacent addresses between addresses 2 and 3.</p><p>Here, in the stator core 15, corresponding to the number of magnetic poles 16 of the rotor 7, 96 slots 15a are formed at equal intervals to accommodate two sets of three-phase AC windings 160.</p><p>That is, the number of slots for weekly sales is 2.</p><p>In addition, for the element wire 30, for example, a long copper wire material having a rectangular cross section covered with insulation is used.</p><p>Next, the winding structure of the stator winding 161 for one phase will be described in detail with reference to FIG. 4 .</p><p>The stator winding 161 for one phase is composed of first to fourth windings 31 to 34 each of which is a single wire 30 .</p><p>And, the first winding 31 has a single wire 30 at an interval of 6 slots from No. 1 to No. 91 of the slot number, the first position on the inner circumference side and the second position on the inner circumference side within the slot 15a. It is composed by winding the wave to occupy alternately.</p><p>The second winding 32 alternately occupies the second position from the inner periphery and the first position from the inner periphery within the slot 15a within the slot 15a at intervals of 6 slots from 1 to 91 of the slot number of the element wire 30 . It is composed of wave winding so that</p><p>The third winding 33 alternately occupies the third position from the inner circumference side and the fourth position from the inner circumference side within the slot 15a at intervals of 6 slots from 1 to 91 of the slot number. It is composed of wave winding.</p><p>The fourth winding 34 alternately rotates the element wire 30 from No. 1 to No. 91 of the slot number at intervals of 6 slots, the fourth position from the inner circumference side and the third position from the inner circumference side within the slot 15a. It is composed of wave winding to occupy.</p><p>For this reason, the first to fourth windings 31 to 34 are wound so as to alternately occupy an inner layer and an outer layer in the slot lengthwise direction within the slot 15a at every 6 slots with one strand 30, respectively. It constitutes a winding of one turn.</p><p>Then, in each slot 15a, four strands 30 are arranged in a row in the radial direction by arranging the longitudinal direction of the rectangular cross section in the radial direction.</p><p>Thereafter, the positions of the wire 30 in the slot 15a are called addresses 1, 2, 3 and 4 from the inner peripheral side.</p><p>In addition. Although not shown, the stator windings 161 for six phases are formed by offsetting the slot 15a in which the wire 30 is wound by one.</p><p>And, at one end of the stator core 15, the winding end 31b of the first winding 31 extending from the 2nd address of No. 67 of the slot number, and the third winding extending from the 3rd address of No. 61 of the slot number ( 33) winding end 33a is crossover connection (adjacent number crossover connection C)<sub>2-3</sub>), the winding end 32b of the second winding 32 extending from the 2nd address of No. 61 of the slot number, and the winding end 34a of the fourth winding 34 extending from the 3rd address of No. 55 of the slot number. ) is the crossover connection (adjacent address crossover connection C<sub>2-3</sub>), and the winding end 31a of the first winding 31 extending from address 1 of No. 61 of the slot number and the winding end of the second winding 32 extending from address 1 of No. 55 of the slot number ( 32a) this crossover connection (same address crossover connection C)<sub>1-1</sub>)do.</p><p>Due to this, the first to fourth windings 31 to 34 are connected in series and formed in the stator winding 161 for one phase of 4 turns, that is, the winding of a phase.</p><p>At this time, the winding end 33b of the third winding 33 extending from the 4 address of No. 67 of the slot number and the winding end 34b of the fourth winding 34 extending from the 4 address of No. 61 of the slot number are a. It becomes the output line (Oa) and the neutral point (Na) of the winding of the phase.</p><p>Similarly, as shown in FIG. 5, in the group of wires wound in the slot group of slot numbers 5 and 11 ---95, the winding of the first winding 31 extending from the 2nd address of 59 of the slot number The end 31b and the winding end 33a of the third winding 33 extending from the 3rd address of No. 5C of the slot number are crossover connection (adjacent address crossover connection C).<sub>2-3</sub>), and then the winding end 32b of the second winding 32 extending from the 2nd address of No. 53 of the slot number, and the winding end 34a of the fourth winding 34 extending from the 3 address of No. 47 of the slot number. This crossover connection (adjacent address crossover C)<sub>2-3</sub>), the winding end 31a of the first winding 31 extending from address 1 of No. 53 of the slot number, and the winding end 31a of the first winding 31 extending from address 1 of No. 47 of the slot number. ) and the winding end 32a of the second winding 32 extending from address 1 of No. 47 of the slot number is crossover connection (same address crossover connection C).<sub>1-1</sub>)do.</p><p>As a result, the first to fourth windings 31 to 34 are connected in series to form 4 turns of the b-phase winding.</p><p>Also, the winding end 33b of the third winding 33 extending from the 4th address of No. 59 of the slot number and b which is the winding end 34b of the fourth winding 34 extending from the 4th address of No. 33 of the slot number. Output wire (Ob) and neutral point (N) of the winding of the field<sub>b</sub>) becomes</p><p>Further, as shown in Fig. 5, in the group of wires wound in the group of slots numbered 3, 9....93, the second winding 32 extending from the 2nd address of the number 51 of the slot number is The winding end 32b and the winding end 34a of the fourth winding 34 extending from the 3rd address of No. 45 of the slot number are crossover connection (adjacent number crossover connection C).<sub>2-3</sub>), and then the winding end 31b of the first winding 31 extending from the 2nd address of No. 45 of the slot number and the winding end of the third winding 33 extending from the 3rd address of No. 39 of the slot number ( 33a) this crossover connection (adjacent address crossover connection C<sub>2-3</sub>), and the winding end 32a of the second winding 32 extending from address 1 of No. 45 of the slot number and the winding end 31a of the first winding 31 extending from address 1 of No. 39 of the slot number. ) is the crossover connection (same address crossover connection C<sub>1-1</sub>)do.</p><p>Due to this, the first to fourth windings 31 to 34 are connected in series to form a C-phase winding of 4 turns.</p><p>In addition, the winding end 34b of the fourth winding 34 extending from the 4th address of No.51 of the slot number and the winding end 33b of the third winding 33 extending from the 4th address of No.45 of the slot number are formed. It becomes the output line (Oc) and the neutral point (Nc) of the C-phase winding.</p><p>In the a-phase winding, b-phase winding, and c-phase winding formed in this way, the same address crossover connection (C<sub>1-1</sub>) is the same wiring address as Address 1, and it is installed with an 8-slot pitch.</p><p>Also, three output lines (O<sub>a</sub>), (O<sub>b</sub>), (O<sub>c</sub>) is installed with an 8-slot pitch, and three midpoints N<sub>a</sub>, N<sub>b</sub>, N<sub>c</sub>Fig. 8 is installed with a slot pitch.</p><p>In addition, in the group of wires wound in the group of slots with slot numbers 2, 8, ... 92, each wire 30 is similarly connected to form a winding on a' phase, and the slot numbers are 6 and 12 In the group of wires wound in No. 96 slot group, each wire 30 is connected in the same way to form a winding of b' phase, and the slot number is 4, 10... In the element wire group, each element wire 30 is similarly connected to form a C'-phase winding.</p><p>Next, the same address crossover connection and neutral point connection will be described.</p><p>The same address crossover connection and neutral point connection are performed using the three-phase AC connection terminal 1000 shown in FIG. 6 .</p><p>The three-phase AC connection terminal 100 is composed of a metal terminal 101 for neutral connection and three metal terminals 102 for crossover connection, as shown in FIG. 6 .</p><p>The metal terminal 101 for the neutral point connection is manufactured by bending and processing an equivalent metal rod having a spherical cross section, and three joining pieces 101a and one neutral point lead 101b are installed.</p><p>Then, the joining piece 101a is provided with an 8-slot pitch in the circumferential direction corresponding to the three neutral points (Na), (Nb), and (Nc).</p><p>Further, the metal terminal 102 for crossover connection is manufactured by bending an equivalent metal rod having a spherical cross section into a U-shape so as to have joining pieces 102a at both ends.</p><p>Then, the three metal terminals 102 for crossover connection are integrated with the metal terminal 101 for neutral point connection by the insulating resin 103 so that they are arranged in an 8-slot pitch in the circumferential direction.</p><p>Then, after the side surfaces of the winding end 31b of the first winding 31 and the winding end 33a of the third winding are brought into close contact with each other, the winding ends 31b and 33a of the stator core 15 are connected to each other. After fusion bonding at one end side by arc welding, the side surfaces of the winding end 32b of the second winding 32 and the winding end 34a of the fourth winding are brought into close contact with each other, the winding end 32b, (34a) is melt-bonded by arc welding at one end of the stator core 15, and cross-over connection of adjacent addresses of each phase is made.</p><p>Next, the three-phase alternating current connection terminal 100 is connected so that the side surfaces of each junction piece 101a and the neutral points (Na), (Nb), and (Nc) of the windings of a, b and c phases are in close contact with each other. It is arranged on one end side of the stator iron core 15, and each of the joining pieces 101a and the neutral points Na, Nb, and Nc are melt-bonded by arc welding at one end of the stator iron core 15.</p><p>Further, the side surfaces of the first and second windings 31 and 32 of the a-phase winding 31a and 33a and the joining piece 102a are brought into close contact with each other, and the winding ends 31a, ( 32a) and the joining piece 162a are fusion-bonded by arc welding at one end of the stator core 15, and crossover connection is made at the same address.</p><p>Similarly, the winding ends 31a, 32a and the joining piece 102a of the first and second windings 31 and 32 of the b-phase and c-phase windings are melt-bonded by arc welding, and cross the same address. overwired.</p><p>Because of this. A three-phase alternating-current winding 166 is obtained comprising windings of a-phase, b-phase and c-phase.</p><p>And, the neutral points (Na), (Nb), (Nc) are electrically connected by a metal terminal 101 for a neutral point connection, and are gathered by one neutral point lead-out lead 101b.</p><p>In addition, the three-phase AC connection terminal 100 so that the side surfaces of each bonding piece 101a and the neutral points (Na') and (Nb') (Nc') of the windings of phase a', b', and c' come into close contact with each other. ) is disposed on one end side of the stator core 15, and melted by arc welding at one end side of the stator core 15 of each joining piece 101a and the neutral points (Na'), (Nb') and (Nc'). are joined</p><p>In addition, the winding ends 31a and 32a of the first and second windings 31 and 32 of the winding a' and the joining piece 102a are formed by arc welding at one end of the stator core 15. They are fusion-bonded, and crossover connections are made at the same address.</p><p>Similarly, the winding ends 31a, 32a and the joining piece 102a of the first and second windings 31 and 32 of the b'-phase and c'-phase windings are fusion-bonded by arc welding, and the same address The crossover is finalized.</p><p>And, the neutral points (Na'), (Nb') (Nc') are electrically connected by a metal terminal 101 for a neutral point connection, and are gathered in one neutral point lead 101b.</p><p>For this reason, as shown in FIGS. 2 and 3, two sets of three-phase AC windings 160 in which the windings wound on the stator core 15 are AC-connected using the terminal 100 for 3-phase AC wiring. A stator (8) with stator windings (16) is obtained.</p><p>The three-phase alternating current windings 160 of each pair are star-connected so that the stator windings 161 for three phases have a phase difference of 120 degrees at an electric angle to each other.</p><p>Further, the three-phase AC winding 160 of 12 degrees has a phase value of 30 degrees to each other and is wound around the stator core 15 .</p><p>The two sets of three-phase AC windings 160 are respectively connected to the rectifier 12 as shown in FIG. 7 .</p><p>The DC output of each rectifier 12 is connected in parallel and synthesized.</p><p>In addition, the neutral point of each three-phase AC winding 160 is connected to the DC output terminal of the rectifier 12 via a diode 29 .</p><p>Here, each of the wires 30 constituting the first to fourth windings 31 to 34 extends from one slot 15a toward the end face of the stator core 15 and returns to the slot 6 slots apart ( 15a) is wound with a wave winding.</p><p>Each element wire 30 is wound so as to occupy an inner layer and an outer layer alternately with respect to the slot depth direction (diameter direction) every 6 slots.</p><p>In addition, the first winding 31 and the second winding 32 are offset by 180 degrees at an electric angle and inverted.</p><p>Similarly, the third winding 33 and the fourth winding 34 are offset 180 degrees at an electrical angle and are recommended to be reversed.</p><p>In addition, the turn portion 30a of the stranded wire 30 which has been extended to the end face side of the stator iron core 150 and returned forms a coil end.</p><p>Therefore, the turn portions 30a formed in substantially the same shape at both ends of the stator iron core 15 are spaced apart from each other in the circumferential and radial directions to form two rows, and the coil end groups 16a and 16b are arranged in an orderly manner in the circumferential direction. is forming</p><p>Next, a method of assembling the stator 8 will be specifically described with reference to FIGS. 8 to 16 .</p><p>First, as shown in FIG. 8 , 12 long strands 30 are simultaneously bent to form a lightenig bolt shape on the same plane.</p><p>Subsequently, as indicated by the arrow in FIG. 9, the jig is folded in a right angle direction, and the winding assemblies 90A and 90B shown in FIGS. 10 and 11 are manufactured.</p><p>In this folding step, a specific wire 30 is read halfway to form a crossover connection, an output line, and a lead portion for a neutral point.</p><p>10 and 11, a plurality of portions extending to one side of the winding assemblies 90A and 90B correspond to lead wires.</p><p>In addition, the winding assemblies 90A and 90B have the same configuration except for the crossover connection, the output line, and the lead of the neutral point.</p><p>And, in order to make it easier to form the iron core 36 on which the winding assemblies 90A and 90B are mounted in an annular shape, the winding assemblies 90A and 90B are annealed at 300° C. for 100 minutes after fabrication.</p><p>In addition, as shown in FIG. 12 , each element wire 30 is formed by bending the straight line portions 30b connected by the turn portions 30a in a planar pattern arranged at a 6-slot pitch 6p.</p><p>And, the adjacent linear portion 30b is offset by the width W of the element wire 30 by the turn portion 30a.</p><p>As shown in FIG. 13 , the winding assembly 90 offsets the two strands 30 formed in such a pattern by 6 slot pitches and overlaps the straight line portions 30b by offsetting the pair of strands arranged by 1 slot pitch to arrange 6 pairs. has been composed</p><p>In addition, six ends of the wire 30 extend on both sides of both ends of the winding assemblies 90A and 90B.</p><p>In addition, the turn portion 30a is arranged on both sides of the winding assemblies 90A and 90B.</p><p>Further, as shown in Fig. 13, the pair of wires arranged by overlapping the straight line portion 30b with a 6-slot pitch offset is offset by 180 degrees at an electric angle.</p><p>In addition, as shown in FIG. 14, a predetermined number of spcc materials in which trapezoidal slots 36a are formed at a predetermined pitch (30 degrees electrical angle) are laminated, and the outer periphery thereof is laser welded. to produce</p><p>And, as shown in Fig. 15 (a), the insulator 19 is mounted in the slot 36a of the iron core 36, and each straight part of the two sets of winding assemblies 90A and 90B is each slot ( 36a) overlap and press-fit.</p><p>For this reason, two sets of winding assemblies 90A and 90B are mounted on the iron core 36 as shown in FIG. 15B .</p><p>At this time, the straight portion 30b of the element wire 30 is insulated from the iron core 36 by the insulator 19, and is accommodated in a row in the slot 36a in the radial direction.</p><p>Subsequently, the iron core 36 is rounded, and the cross sections are welded together to obtain a cylindrical iron core 37 as shown in Fig. 15(c).</p><p>By rounding the iron core 36, the slot 36a (corresponding to the slot 15a of the stator iron core) has a substantially spherical cross-sectional shape, and the opening 36b is smaller than the slot width direction dimension of the straight portion 30b.</p><p>Thereafter, as shown in FIG. 16 , the iron core 37 is inserted into the cylindrical outer iron core 38 formed by laminating the spcc material and then heat-fitted so that the iron core 37 and the outer iron core 38 are integrated. A stator iron core (15) is obtained.</p><p>Then, the first to fourth windings 31 to 34 wound in the same slot group by connecting the ends of the same element wire 30 constitute one turn of each winding.</p><p>Next, as described above, each lead part of the winding assemblies 90A and 90B is cut, and the adjacent address crossover is connected. By wiring, two sets of three-phase AC windings 160 are obtained.</p><p>In the vehicle alternator configured as described above, current is supplied from a battery (not shown) to the rotor coil 13 through the brush 10 and the slip ring 9, and magnetic flux is generated.</p><p>By this magnetic flux, the claw magnetic pole 22 of one pole core 20 is magnetized to the N pole, and the claw magnetic pole 23 of the other pole core 21 is magnetized to the S pole.</p><p>On the other hand, the rotation torque of the engine is transmitted to the shaft 6 through the belt and pulley 4, the rotor 7 is rotated.</p><p>Thus, a rotating magnetic field is applied to the stator winding 16 , and a reference force is generated in the stator winding 16 .</p><p>The electromotive force of this alternating current is rectified into direct current through the rectifier 12 , and at the same time its magnitude is adjusted by the regulator 18 and charged to the battery.</p><p>And, on the rear side, by the rotation of the fan 5, outside air is sucked in through the intake holes 2a provided to face the heat sink of the rectifier 12 and the heat sink 17 of the regulator 18, respectively, and the shaft ( 6) flows along the axis to cool the rectifier 12 and the regulator 18, and then is bent in the centrifugal direction by the fan 5 to cool the coil end group 16b on the rear side of the stator winding 16, , is discharged to the outside from the exhaust hole (2b).</p><p>On the other hand, on the front side, the outside air is sucked in the axial direction from the intake hole 1a by the rotation of the fan 5, and then bent in the centrifugal direction by the fan 5 to the coil end of the front side of the stator winding 16. The group 16a is cooled and discharged from the exhaust hole 16 to the outside.</p><p>As described above, according to the first embodiment, in the stator winding 16, one strand 30 is returned outside the slot 15a on the end face side of the stator core 15, and the slot 15a is slotted in every 6 slots. It has a plurality of first to fourth windings (31) to (34) which are locked so as to occupy the inner layer and the outer layer alternately in the depth direction.</p><p>Then, the first winding 31 (the third winding 33) is a first winding group composed of six arranged at one slot pitch and the first winding 31 (the third winding 33) at an electrical angle of 180 degrees. Two sets of winding assemblies (90A) and (90B) consisting of a pair of a second winding group composed of six parallel windings of the second winding (32) (the fourth winding (34)), which are semi-lowered by offset by one slot pitch is wound in two rows in a direction perpendicular to the stator core (15).</p><p>Therefore, by winding the winding assemblies 90A and 90B in two rows on the stator core 15, the stator windings 161 for six phases are wound around the stator core 15, and the assembly property can be remarkably improved. have.</p><p>In addition, the winding connection between the two sets of winding assemblies (90A) and (90B) is connected to two adjacent address crossover connections (C<sub>2-3</sub>), and the winding connection in one set of winding assembly d (90A) is crossover connection (C) of the same address in one place.<sub>1-1</sub>), so the crossover connection part has a very simple structure.</p><p>For this reason, the work such as pulling and bending of the wire 30 for crossover wiring is remarkably reduced, and the wiring workability is greatly improved, and in each set of three-phase AC winding 160, each phase crosses the same address. Over connection (C<sub>1-1</sub>) is installed in the circumferential direction at an 8-slot pitch, so the crossover wiring of the same address on each phase can be arranged without contacting, improving wiring workability and suppressing the increase in the height of the coil end. have.</p><p>Further, since the first to fourth windings 31 to 34 constituting the stator winding 16 are each made of one single wire 30 (continuous wire), there are many like the conventional stator 50 . It is not necessary to insert the short conductor segment 54 of the stator core 51 into the stator core 51 and join the ends 54b to each other by welding, soldering, etc., and the productivity of the stator 8 can be remarkably improved.</p><p>In addition, since the coil end is constituted by the turn portion 30a of the wire 30, the bonding portion in the coil end groups 16a and 16b is the bonding portion between the ends of the first to fourth windings 31 to 34. and crossover connection junctions, and the number of junctions is remarkably reduced.</p><p>For this reason, the occurrence of a short circuit accident due to the loss of the insulating film due to bonding is suppressed, so that excellent insulation is obtained and a high yield is obtained.</p><p>In addition, it is possible to suppress a decrease in corrosion resistance due to loss of the insulating film due to bonding.</p><p>In addition, since the element wire 30 is formed in a spherical cross-section, the contact area of the junction can be increased. A large bonding strength is obtained, and reliability can be improved.</p><p>Moreover, since it is joined by arc welding, a large bonding strength can be obtained and reliability can be improved.</p><p>In addition, since the same address crossover connection is performed using the metal terminal 102 for crossover connection, a clamp for fixing the winding ends for crossover connection is unnecessary, and the number of parts can be reduced.</p><p>In addition, the length of the winding end for crossover connection can be shortened, and the pulling or bending work of the winding end is remarkably reduced.</p><p>Moreover, since the neutral point of each phase is implemented using the metal terminal 101 for neutral point connection, the clamp which fixes the winding ends which comprise a neutral point becomes unnecessary, and the number of parts can be reduced.</p><p>Further, the length of the winding end constituting the neutral point can be shortened, and the pulling or bending work of the winding end is remarkably reduced.</p><p>In addition, since the neutral point lead 101b is installed in the metal terminal 101 for the neutral point connection, there is no need to newly install a lead for outputting the neutral point current of the three-phase AC winding 160, and the wiring workability can be improved. .</p><p>In addition, since the metal terminal 101 for the neutral point connection and the metal terminal 102 for the crossover connection are integrally formed by the insulating resin 103, the terminals are arranged in the wiring work of a pair of three-phase AC windings 160 The process to be carried out becomes one time, and the work man-hour can be reduced.</p><p>In addition, since two sets of continuous wire winding assemblies 90A and 90B can be arranged in two rows and inserted into the slots 15a of the stator iron core 15, a plurality of conductor segments 54 are inserted into the slots one by one. workability can be remarkably improved compared to the prior art.</p><p>In addition, when the number of turns of the stator winding is increased, it can be easily dealt with by overlapping the winding assemblies 90A and 90B, which are continuous wires, so that the straight portions 30b are arranged to face each other.</p><p>Further, in the stator 8 according to the first embodiment, the winding assemblies 90A and 90B made of continuous wires are inserted into the slots 36a of the iron core 36 of a rectangular parallelepiped from the opening 36b, and then The iron core 36 may be manufactured by rounding it into an annular shape.</p><p>Therefore, since the opening dimension of the opening 36b of the iron core 36 can be made larger than the slot axial dimension of the bare wire 30, the ease of inserting the winding assembly can be improved.</p><p>In addition, by forming the iron core 36 in an annular shape, the opening dimension of the opening part 36b can be made smaller than the slot width direction dimension of the bare wire 30, so that the space factor can be increased and the output can be improved.</p><p>Moreover, even if the number of slots increases, productivity of a stator does not fall.</p><p>In addition, since there is no need to press-fit into the slot 15a along the axial direction of the stator core 15 like the conductor segment 54, it is difficult to damage the insulating film of the wire 30, and a high yield can be threaded. have.</p><p>The effect obtained by mounting the stator 8 constituted in this way on the alternator will be described below.</p><p>First, since the coil end is constituted by the turn portion 30a of the element wire 30, the number of junctions in the coil end groups 16a and 16b is remarkably reduced.</p><p>For this reason, there is no softening of the wire 30 by welding, the rigidity as a stator is high, and magnetic noise can be reduced.</p><p>Further, the coil end groups 16a and 16b are constituted by arranging the turn portions 30a in the circumferential direction.</p><p>For this reason, compared with the conventional coil end group in which the ends 54b of the conductor segments 54 are joined, the height extending from the end face of the stator iron core 15 of the coil end group can be reduced. </p><p>For this reason, the ventilation resistance in the coil end groups 16a and 16b becomes small, and the wind noise resulting from the rotation of the rotor 7 can be reduced. </p><p>In addition, the number of leakage reactants of the coil of the coil end is reduced, and output/efficiency is improved.</p><p>In addition, four strands 30 are arranged in one row in the radial direction in the slot 15a, and the turn portions 30a are arranged in a row in two rows in the circumferential direction. </p><p>For this reason, since the turn portions 30a constituting the coil end groups 16a and 16b are respectively distributed in two rows in the radial direction, The height of the extension can be lowered.</p><p>As a result, the ventilation resistance in the coil end groups 16a and 16b is reduced, and the wind noise caused by the rotation of the rotor 7 can be reduced.</p><p>Moreover, the turn part 30a returned from the end face side of the stator iron core 15 connects two straight part 30b arrange|positioned as another layer in another slot 15a 6 slots apart in series. </p><p>For this reason, interference between the coil ends of each phase is suppressed, and the stator windings can be stacked at a high point, so that a high output is realized. </p><p>In addition, each turn portion 30a can be easily formed to have substantially the same shape. </p><p>Then, by forming each turn portion 30a in substantially the same shape, that is, by forming the turn portions 30a constituting the coil end groups 16a and 16b to have substantially the same shape in the circumferential direction, the coil end group 16a ), (16b), since irregularities in the circumferential direction in the inner diameter side end face are suppressed, wind noise generated between the rotor 7 and the coil end groups 16a and 16b can be reduced. have.</p><p>Moreover, the leakage inductance becomes the same, and a stable output is obtained.</p><p>In addition, since the turns 30a are spaced apart in the circumferential direction, and the space between the turns 30a is formed substantially equally in the circumferential direction, ventilation into the coil end groups 16a and 16b is facilitated. , the cooling performance is improved, and the noise caused by the interference between the cooling wind and the coil end is reduced. </p><p>In addition, since each turn portion 30a is formed in substantially the same shape and arranged in a circumferential direction, the heat dissipation properties in each turn portion 30a are equal, and the heat dissipation properties in the coil end groups 16a and 16b. This becomes equal.</p><p>For this reason, the heat generated in the stator winding 16 is equally radiated from each turn portion 30a and equally radiated from both coil ends 16a and 16b, and the cooling property of the stator winding 16 is This is improved.</p><p>In addition, since the opening dimension of the opening 15b of the slot 15a is configured to be smaller than the slot width direction dimension of the element wire 36, protrusion of the element wire 30 radially inward from the slot 15a is prevented. At the same time, the interference sound with the rotor 7 in the opening 15b is also reduced.</p><p>Further, since the straight part 30b is formed in a longitudinal section, when the straight part 30b is accommodated in the slot 15a, the cross-sectional shape of the straight part 30b is a shape corresponding to the slot shape.</p><p>For this reason, it becomes easy to increase the space factor of the wire 30 in the slot 15a, and the heat transfer from the wire 30 to the stator core 15 can be improved.</p><p>Further, since the element wire 30 is formed in a rectangular cross-sectional shape, the heat dissipation area from the turn portion 30b constituting the coil end is large, and the heat generated by the stator winding 16 is effectively dissipated.</p><p>Further, by arranging the long side of the rectangular cross-section parallel to the radial direction, the gap between the turn portions 30b can be secured, and the cooling wind can be ventilated into the coil end groups 16a and 16b. The ventilation resistance in the radial direction can be reduced. </p><p>Here, although it is assumed that the straight part 30b is formed in a rectangular cross section in this Embodiment 1, the cross-sectional shape of the straight part 30b is not limited to a rectangular cross section, The rectangular cross section with the short side of a rectangle as an arc. , may have a substantially flat shape such as an elliptical cross-section.</p><p>Further, the number of magnetic poles of the rotor 7 is 16, and 96 slots 15a are formed in the stator core 15 at an equal pitch.</p><p>That is, since the number of slots in which the stator winding 16 is accommodated is 2 for every phase of each pole, and there are two sets of three-phase AC windings 160 arranged with a phase difference from each other, the magnetomotive force waveform can be made close to a sinusoidal waveform, and the harmonic component can be reduced, and a stable output can be obtained.</p><p>In addition, as shown in Fig. 7, the stator windings 161 formed by connecting the first to fourth windings 31 to 34 in series are connected in a star shape by three, so that two sets of three-phase AC windings 160 are connected. and two sets of three-phase AC windings 160 are respectively connected to the rectifier 12, </p><p>Moreover, the outputs of the two rectifiers 12 are connected in parallel. </p><p>Due to this, the DC output of the two sets of three-phase AC windings 160 can be synthesized and taken out, and the negative pole of the power generation in the low rotation region can be eliminated.</p><p>In addition, since the center point N of the three-phase AC winding 160 is connected to the output terminal of the rectifier 12 through the diode 29, a large fluctuation in the neutral point voltage is used to increase the rotation speed of 2000 rpm, especially 2500 rpm. The output in the area can be improved.</p><p>Further, since the coil end groups 16a and 16b have a low height and few junctions, the cooling wind formed by the fan 5 by the rotation of the rotor 7 and the coil end groups 16a, ( 16b) and the interfering sound is small.</p><p>Since both coil end groups 16a and 16b have substantially the same shape, and fans 5 are provided at both ends of the rotor 7, both coil end groups 16a and 16b have a good balance. is cooled, and the stator winding temperature is uniformly and greatly reduced.</p><p>Here, the fan 5 does not necessarily need to be installed at both ends of the rotor 7, and may be installed in consideration of the stator winding, which is a large heating element, or the location of the rectifier. </p><p>For example, it is preferable that the coil end of the stator winding, which is the largest heating element, be disposed on the discharge side of the fan having a high cooling rate, and the fan is disposed at the end of the rotor on the side where the rectifier is disposed. </p><p>In addition, when a vehicle engine is attached, since the normal pulley is connected to the crankshaft through the belt, it is preferable to arrange the fan on the half-pulley side so that the cooling exhaust wind of the fan does not affect the belt.</p><p>In addition, the mold part of the claw magnetic pole of the rotor also has a blowing action and can be used as a cooling water product.</p><p>In addition, since the inclination direction of the wire 30 constituting the inner peripheral side of the coil end groups 16a and 16b is parallel, the axial flow in the case 3 turns the wire 30 according to the inclination. . </p><p>Thereby, the axial flow generated by the rotation of the rotor 7 is controlled.</p><p>That is, if the wire 30 constituting the inner peripheral side of the coil end groups 16a and 16b is inclined in the synthesis direction of the rotation direction component of the rotor 7 and the axial flow component of the cooling wind, the cooling wind The axial flow is first discharged.</p><p>As a result, since the rotor coil 13 is efficiently cooled, the temperature of the rotor coil 13 decreases, the field current increases, and output improvement is expected.</p><p>In this case, since the wire 30 constituting the inner peripheral side of the coil end groups 16a and 16b is inclined in accordance with the axial flow component, wind noise due to interference is also reduced.</p><p>On the other hand, if the wire 30 constituting the inner peripheral side of the coil end groups 16a and 16b is inclined in the synthesis direction of the rotor direction component of the rotor 7 and the antiaxial flow of the cooling wind, cooling The axial flow of wind is reduced.</p><p>For this reason, the air volume on the discharge side in the radial direction increases, and the cooling property of the coil end group disposed on the discharge side is improved.</p><p>Further, since the axial length of the stator 8 including the coil ends is smaller than the axial length of the full cores 20 and 21, miniaturization can be realized.</p><p>In addition, when the fan 5 is provided at both ends of the rotor 7, there is no coil end on the fan discharge side, so the ventilation resistance is remarkably small, the wind noise is reduced, and the cooling of the rectifier 12, etc. It is possible to suppress the temperature rise of the interior.</p><p>Further, in the first embodiment, it is assumed that the metal terminal 101 for neutral point connection and the metal terminal 102 for crossover connection are formed integrally with the insulating resin 103, but both terminals 101, (102) is not necessarily formed integrally. </p><p>In this case, the points of installation of the terminals are separated, but the same effect is obtained for the different points.</p><p>Further, in the first embodiment, the same address crossover wiring of each phase is arranged in an 8-slot pitch in the circumferential direction. can</p><p>Also, n is the number of slots for every single sale.</p><p>Embodiment 2</p><p>Fig. 17 is a front view for explaining the connection state of three phases of the stator windings in the vehicular alternator according to the second embodiment of the present invention.</p><p>In Fig. 17, the winding end of the first winding 31 extending from the 2nd address of 67 of the slot number in the group of wires wound around the group of slots No. 1, No. 7 ... No. 91 (31b) and the winding end (33a) of the third winding 33 extending from address #61 of the slot number is a crossover connection (adjacent address crossover connection C).<sub>2-3</sub>), and then the winding end 32b of the second winding 32 extending from the 2nd address of No. 61 of the slot number, and the winding end of the fourth winding 34 extending from the 3rd address of No. 55 of the slot number ( 34a) is crossover connection (adjacent address crossover connection 2-3), and the winding end 31a of the first winding 31 extending from address 1 of number 61 of slot number and address 1 of number 55 of slot number The winding end 32a of the second winding 32 extending from the crossover connection becomes a crossover connection (same address crossover connection 1-1).</p><p>As a result, the first to fourth windings 31 to 34 are connected in series to form the stator winding 161 for one phase of 4 turns, that is, the a-phase winding.</p><p>At this time, the winding end 33b of the third winding 33 extending from address 4 of No. 67 of the slot number and the fourth winding 34 extending from address 4 of No. 61 of the slot number have the winding end 34b of the a-phase It becomes the thrust line (0a) and the neutral point (Na) of the winding.</p><p>Similarly, the winding end of the second winding 32 ( 32b) and the winding end 34a of the fourth winding 34 extending from address 3 of 57 of the slot number is crossover connection (adjacent address crossover connection) 2-3, and then, 57 of the slot number The winding end 31b of the first winding 31 extending from address No. 2 and the winding end 33a of the third winding 33 extending from address 3 of No. 51 of the slot number are crossover connection (adjacent address cross). It is over-connected (2-3), and the winding end 34b of the fourth winding 34 extending from the 4th address of No.63 of the slot number and the third winding 33 extending from the 4th address of No.57 of the slot number. ) winding end 33b is crossover connection (same address crossover connection C).<sub>4-4</sub>)do. </p><p>As a result, the first to fourth windings 31 to 34 are connected in series to form a 4-turn b-phase winding.</p><p>In addition, the winding end 32a of the second winding 32 extending from address 1 of No. 57 of the slot number and the winding end 31a of the first winding 31 extending from address 1 of No. 51 of the slot number are b. It becomes the output line (0b) of the phase winding and the midpoint (Nb).</p><p>In addition, in the group of wires wound in the slot group of slot numbers 5, 11.......95, the winding end 31b of the first winding 31 extending from the 2nd address of the 59th slot number and the winding end 33a of the third winding 33 extending from the 3rd address of the number 53 of the slot number is crossover connection (adjacent address crossover connection C).<sub>2-3</sub>), and then the winding end 32b of the second winding 32 extending from the 2nd address of No. 53 of the slot number, and the winding end 34a of the fourth winding 34 extending from the 3 address of No. 47 of the slot number. ) is the crossover connection (adjacent address crossover connection C<sub>2-3</sub>), and the winding end 31a of the first winding 31 extending from address 1 of No. 53 of the slot number and the winding end 32a of the second winding 32 extending from address 1 of No. 47 of the slot number. ) is the crossover connection (same address crossover connection C<sub>1-1</sub>)do. </p><p>Due to this, the first to fourth windings 31 to 34 are connected in series to form a C-phase winding of 4 turns. </p><p>Further, the winding end 33b of the third winding 33 extending from the 4th address of No. 59 of the slot number and the winding end 34b of the fourth winding 34 extending from the 4 address of No. 53 of the slot number are C. It becomes the output line (0c) and the neutral point (Nc) of the winding of the phase.</p><p>Crossover connection C of the same address in the phase a winding and the phase c winding formed in this way<sub>1-1</sub>The wiring address is address 1, and the same address crossover connection C in the winding of phase b.<sub>4-4</sub>The final address is #4.</p><p>And, the same address crossover connection of each phase is installed with a 4-slot pitch. </p><p>In addition, three output lines (Oa), (Ob), (Oc) are provided with a 4-slot pitch, and three neutral points (Na), (Nb), (Nc) are also provided with a 4-slot pitch.</p><p>In addition, in the group of wires wound in the slot group of slot numbers 2, 8 ... 92, each wire 30 is similarly connected to form a winding on a' phase, and the slot number is 4, 10....In the group of wires wound around the group of slots No. 94, each wire 30 is connected in the same way to form a winding of b', and the slot numbers are No. 6, No. 12, ....... In the group of wires wound around the group of .96 slots, each wire 30 is similarly connected to form a C'-phase winding.</p><p>In addition, the other structure is comprised similarly to the said Embodiment 1.</p><p>According to the second embodiment, since the same address crossover connection of each phase of the three-phase alternating current winding is performed at different addresses between adjacent phases and arranged at a 4-slot pitch, the wiring workability can be improved, An increase in the height of the coil end can be suppressed .</p><p>In addition, since the crossover connections of the same address are arranged at a pitch of 4 slots, the wiring work area can be concentrated and the wiring workability can be improved compared to the first embodiment.</p><p>Further, in the second embodiment, the same address crossover connection of each phase is arranged at a pitch of 4 slots in the circumferential direction. If the crossover wiring is arranged with a slot pitch of 2n or more, contact with each other can be avoided. </p><p>In addition, n is the number of slots corresponding to every single sale.</p><p>Embodiment 3</p><p>Fig. 18 is a front view for explaining a state in which three phases of the stator windings in the vehicular alternator according to the third embodiment of the present invention are shunted.</p><p>In Fig. 18, in the group of wires wound around the slot group of slot numbers 1, 7, and ... 91, the first winding 31 extending from address 67 of the slot number The winding end 31b of , and the winding end 33a of the third winding 33 extending from address #61 of slot number 3 are crossover connection (adjacent address crossover connection C).<sub>2-3</sub>) and, then, the winding end 33b of the third winding 33 extending from the 4th address of the 67th slot number and the winding end 34b of the fourth winding 34 extending from the 4th address of the 61st winding number of the slot number. ) is the crossover connection (same address crossover connection C<sub>4-4</sub>), and the winding end 31a of the first winding 31 extending from address 1 of No. 61 of the slot number and the winding end 32a of the second winding 32 extending from address 1 of No. 55 of the slot number. ) is the crossover connection (same address crossover connection C<sub>1-1</sub>)do.</p><p>Due to this, the first to fourth windings 31 to 34 are connected in series to form the stator winding 161 for one phase of 4 turns, that is, the a-phase winding. </p><p>At this time, the winding end 32b of the second winding 32 extending from address 2 of No. 61 of the slot number and the winding end 34a of the fourth winding 34 extending from address 3 of No. 55 of the slot number are a. The winding of the phase becomes the output line (Oa) and the neutral point (Na).</p><p>Similarly, in the group of wires wound in the slot group of slot numbers 5 and 11.......95, the winding end 31b of the first winding 31 extending from the 2nd address of the 59th slot number And, the third winding 33 extending from the 3rd address of No. 53 of the slot number, the winding end 33a is crossover connection (adjacent number, crossover connection C)<sub>2-3</sub>), and then the winding end 33b of the winding end 34 of the third winding 33 extending from the 4 address of No. 59 of the slot number, and the fourth winding 34 extending from the 4 address of No. 53 of the slot number. ) winding end 34b is crossover connection (same address crossover connection C).<sub>4-4</sub>), and the winding end 31a of the first winding 31 extending from address 1 of No. 53 of the slot number and the winding end of the second winding 32 extending from address 1 of No. 47 of the slot number ( 32a) This crossover connection (same address crossover connection C)<sub>1-1</sub>)do. </p><p>As a result, the first to fourth windings 31 to 34 are connected in series to form a 4-turn b-phase winding.</p><p>Also, the winding end 32b of the second winding 32 extending from the 2nd address of No. 53 of the slot number and the winding end 34a of the fourth winding 34 extending from the 3 address of No. 47 of the slot number are in the b phase. It becomes the output line (Ob) and the neutral point (Nb) of the winding.</p><p>The winding end 32b of the second winding 32 extending from the 2nd address of the 51st slot number in the group of wires wound in the slot number 3, 9.......93 slot group and the winding end 34a of the fourth winding 34 extending from the 3rd address of No. 45 of the slot number is crossover connection (adjacent address crossover connection C).<sub>2-3</sub>), and then the winding end 34b of the fourth winding 34 extending from the 4 address of No. 51 of the slot number, and the winding end 33b of the third winding 33 extending from the 4 address of No. 45 of the slot number. ) is the crossover connection (same address crossover connection C<sub>4-4</sub>), and the winding end 32a of the second winding 32 extending from address 1 of No. 45 of the slot number, and the winding end 31a of the first winding 31 extending from address 1 of No. 39 of the slot number. ) is the crossover connection (same address crossover connection C<sub>1-1</sub>)do. </p><p>As a result, the first to fourth windings 31 to 34 are connected in series to form a C-phase winding of 4 turns.</p><p>Further, the winding end 31b of the first winding 31 extending from the 2nd address of No. 45 of the slot number and the third winding 33 extending from the 3rd address of No. 39 of the slot number have the winding end 33a of C It becomes the output line (Oc) and the neutral point (Nc) of the phase winding.</p><p>In the a-phase winding, b-phase winding, and c-phase winding formed in this way, the same address crossover connection C at two locations corresponding to each other<sub>1-1</sub>, C<sub>4-4</sub>has a </p><p>And, the same address of each phase crossover connection C<sub>1-1</sub>It is installed with this 8 slot pitch, and each phase has the same address crossover connection C<sub>4-4</sub>) is installed with an 8-slot pitch. </p><p>In addition, three output lines (Oa), (Ob), (Oc) are provided with an 8-slot pitch, and three neutral points (Na), (Nb), (Nc) are also provided with a slot pitch.</p><p>In addition, in the group of wires wound in the slot group of slot number 2, 8.......92, each wire 30 is similarly connected to form a winding on a' phase, and the slot number is 6 , 12 ......... In the group of wires wound in the slot group of No. 96, each element 30 is similarly connected to form a winding of b' phase.</p><p>Further, the other configuration is the same as that of the first embodiment.</p><p>Therefore, also in this Embodiment 3, since the same-address crossover connection of each phase of the three-phase AC winding is arranged at an 8-slot pitch, the same-address crossover connection can be arranged without contact.</p><p>Embodiment 4</p><p>Fig. 19 is a plan view showing the connection state of one phase of the stator windings in the vehicle alternator according to the fourth embodiment of the present invention. </p><p>In Fig. 19, the stator winding 161A for one phase is composed of first to sixth windings 31 to 36, each of which is a single wire 30. As shown in Figs.</p><p>And, the first winding 31 is constructed by wave winding one wire 30 to alternately occupy addresses 1 and 2 in the slot 15a at intervals of 6 slots from No. 1 to No. 91 of the slot number. have.</p><p>The second winding 32 is constituted by wave winding the wire 30 to alternately occupy addresses 2 and 1 in the slot 15a at intervals of 6 slots from No. 1 to No. 91 of the slot number.</p><p>The third winding 33 is constituted by wave winding the strand 30 so as to alternately occupy addresses 3 and 4 in the slot 15a at intervals of 6 slots from No. 1 to No. 91 of the slot number.</p><p>The fourth winding 35 is constituted by wave winding so that the element wire 30 alternately occupies addresses 5 and 6 in the slot 15a at intervals of 6 slots from 1 to 91 of the slot number.</p><p>The sixth winding 36 is constituted by wave winding so that the element wire 30 alternately occupies addresses 6 and 5 in the slot 15a at intervals of 6 slots from 1 to 91 of the slot number.</p><p>For this reason, each of the first to sixth windings 31 to 36 is wound so that each single wire 30 alternately occupies the inner layer and the outer layer in the slot depth direction within the slot 15a every 6 slots. It constitutes a winding of one turn.</p><p>Then, the winding end 31b of the first winding 31 extending from the 2nd address of the 67th slot of the one layer of the stator core and the third winding 33 extending from the 3rd of the 61st of the slot numbering are wound. Crossover connection of stage (33a) (adjacent number cross connection C)<sub>2-3</sub>), the winding end 33b of the third winding 33 extending from address 4 of No. 67 of the slot number, and the winding end 35a of the fifth winding 35 extending from address 5 of No. 61 of the slot number Crossover connection (adjacent address crossover connection C<sub>4-5</sub>), and then the winding end 32b of the second winding 32 extending from the 2nd address of No. 61 of the slot number, and the winding end 34a of the fourth winding 34 extending from the 3rd address of No. 55 of the slot number. ) is the crossover connection (adjacent address crossover connection C<sub>2-3</sub>), the winding end 34b of the fourth winding 34 extending from address 4 of No. 61 of the slot number, and the winding end 36a of the sixth winding 36 extending from address 5 of No. 55 of the slot number. Crossover connection (adjacent address crossover connection C<sub>4-5</sub>), and the winding end 32a of the second winding 32 extending from address 1 of No. 61 of the slot number is crossover connection (same address crossover connection C).<sub>1-1</sub>)do.</p><p>As a result, the first to sixth windings 31 to 36 are in series contact to form a stator winding 161A for one phase of 6 turns, that is, a-phase winding.</p><p>At this time, the winding end 35b of the fifth winding 35 extending from address 6 of No. 67 of the slot number and the winding end 36b of the sixth winding 36 extending from address 6 of No. 61 of the slot number are connected to the stator. It becomes the output line Oa and the neutral point Na of the winding 161A.</p><p>Similarly, in the element wire group wound in the slot group of slot numbers 5 and 11.........95, as shown in FIG. 20, the The winding end 31b of the first winding 31, the third winding extending from address 3 of 53 of the slot number, and the winding end 33a of 33 are crossover connection (adjacent address crossover connection C).<sub>2-3</sub>) and the winding end 33b of the third winding 33 extending from address #59 of the slot number #59 is crossover connection C adjacent address crossover connection C<sub>4-5</sub>), and then the winding end 32b of the second winding 32 extending from the 2nd address of No. 53 of the slot number, and the winding end 34a of the fourth winding 34 extending from the 3 address of No. 47 of the slot number. This crossover connection (adjacent address crossover connection C<sub>2-3</sub>), the winding end 34b of the fourth winding 34 extending from address 4 of No. 53 of the slot number and the winding end 36a of the sixth winding 36 extending from address 5 of No. 47 of the slot number are formed. Crossover connection (adjacent address crossover connection C<sub>4-5</sub>), and the winding end 31a of the 11th winding 31 extending from address 1 of No. 53 of the slot number, and the winding end of the second winding 32 extending from address 1 of No. 47 of the slot number ( 32a) this crossover connection (same address crossover connection C)<sub>1-1</sub>)do.</p><p>In addition, as shown in Fig. 20, in the group of wires wound in the group of slots of which the slot numbers are 3, 9.........93, the second extending from the 2nd address of the 51st slot number Crossover connection between the winding end 32b of the winding 32 and the winding end 34a of the fourth winding 34 extending from address 3 of 45 of the slot number (adjacent address crossover connection C)<sub>2-3</sub>), the winding end 34b of the fourth winding 34 extending from the 4th address of No. 51 of the slot number and the winding end 36a of the sixth winding 36 extending from the 5th address of No. 45 of the slot number are crossed. Over connection (adjacent address crossover connection C<sub>4-5</sub>), and then the winding end 31b of the first winding 31 extending from the 2nd address of No. 45 of the slot number and the winding end 33a of the third winding 33 extending from the 3rd address of No. 39 of the slot number are formed. Cross connection (adjacent address crossover connection C<sub>2-3</sub>), the winding end 33b of the third winding 33 extending from address 4 of number 45 of the slot number and the winding end 35a of the fifth winding 35 extending from address 5 of number 39 of the slot number are formed. Crossover connection (adjacent address crossover connection C<sub>4-5</sub>), the winding end 32a of the second winding 32 extending from address 1 of No. 45 of the slot number, and the winding end 31a of the first winding 31 extending from address 1 of No. 39 of the slot number. This crossover connection (same address crossover connection C<sub>1-1</sub>)do.</p><p>Due to this, the first to sixth windings 31 to 36 are connected in series to form a C-phase winding of 6 turns.</p><p>At this time, the winding end 36b of the sixth winding 36 extending from address 6 of No. 51 of the slot number and the winding end 35b of the fifth winding 35 extending from address 6 of No. 45 of the slot number are in the c phase. The winding becomes the output line (Oc) and the neutral point (Nc).</p><p>In addition, in the group of wires wound in the slot group of slot numbers No. 2, No. 8, and No. 92 , Slot No. 6, 12 ....... In the group of wires wound in the group of No. 96, each wire 30 is connected in the same way to form the winding of phase b', and the slot number is No. 4 In the group of wires wound in the slot group of No. , No. 10.... No. 94, each wire 30 is connected in the same manner to form a winding on c.</p><p>In addition, the other structure is comprised similarly to the said Embodiment 1.</p><p>In the fourth embodiment, two sets of winding assemblies 96A and one set of winding assemblies 90B are wound around a stator core 15 in three rows in the radial direction. </p><p>And, one same address crossover connection (C<sub>1-1</sub>) between the windings in a set of winding assembly (90A) by<sub>2-3</sub>, C<sub>4-5</sub>) between adjacent winding assemblies 90A and between windings between winding assemblies 90A and 90B are connected to form a stator winding 161A for one phase of 6 turns. </p><p>And, crossover connection of the same address of each phase of the 3-phase AC winding (C<sub>1-1</sub>) are arranged in an 8-slot pitch.</p><p>Then, also in this Embodiment 4, the effect similar to the said Embodiment 1 is acquired.</p><p>Embodiment 5</p><p>Fig. 21 is a perspective view showing the stator of the vehicle alternator according to the fifth embodiment of the present invention.</p><p>In Fig. 21, the coil end of the stator winding is molded with an insulating resin 104 such as an epoxy resin, and each joint of the winding is embedded with the insulating resin 104. As shown in Figs.</p><p>In addition, the other structure is comprised similarly to the said Embodiment 1.</p><p>According to the fifth embodiment, the junction part between the ends of the first to fourth windings 31 to 34, the adjacent address crossover connection part and the same address crossover connection part, and the terminals 101 and 102 ) is buried by the insulating resin 104, so the insulation is improved, and at the same time, drop-off of the joint due to vibration is prevented and reliability is improved.</p><p>Further, in each of the above embodiments, the fan 5 is arranged inside the case 3, but the fan may be provided outside the vehicle alternator so as to rotate with the rotation of the rotor.</p><p>In the above embodiments, 6 turns, 4 turns, and 2 turns are described. However, when a lower speed output is required, 8 turns may be used.</p><p>Even in this case, it is possible to respond only by inserting the winding assemblies 90 in four rows in the radial direction and inserting them into the stator core 15 . </p><p>Of course, the number of turns of the rider may be sufficient.</p><p>Moreover, in each said embodiment, it is applicable also to the vehicle alternator of the type which fixes a stator coil to a bracket, and supplies a rotating magnetic field from an air gap.</p><p>Further, in each of the above embodiments, the number of slots of the stator is 96 slots for the number of poles of 16 poles, but 72 slots for 3 phases for the number of poles for 12 poles and 120 slots for the number of poles for 20 poles may be employed. </p><p>Incidentally, in the case of sales 1 for each pole, the number of slots at 16 poles may be 48, the number of slots at 12 poles may be 36, and the number of slots at 20 poles may be 60.</p><p>Further, in each of the above embodiments, the outer cast iron core of the stator iron core is constituted as a laminate of SPCC material, however, the outer iron core may be an integral pipe shape.</p><p>Alternatively, after inserting a group of windings into the slot of the iron core of the rectangular parallelepiped, the tip of a tooth may be pressed in the radial direction by a processing jig to plastically deform it, thereby narrowing the opening of the slot.</p><p>Further, in each of the above embodiments, it is assumed that a Rundel-type rotor having a claw-shaped magnetic pole is used, but the same effect can be obtained by using a Salient-type rotor having a salient-pole-shaped magnetic pole.</p><p>Further, in the above embodiment, the rectifier is arranged on the half pulley side and the fan is also arranged on the same side with respect to the rotor. However, if there is no problem in the temperature of the rectifier, the fan may be arranged on the pulley side.</p><p>Since the height of the coil end of the stator is low, the ventilation resistance on the discharge side in the ventilation path of the fan is significantly reduced, so that the total air volume is increased. </p><p>Therefore, for the positional relationship between the rectifier or pulley and the fan, the optimum position may be selected in consideration of the engine attachment position, wind noise, magnetic noise, and temperature conditions of each part.</p><p>Further, in each of the above embodiments, the windings are formed by separating the strands. However, since the strands have an insulating film, the windings may be formed so that the strands are completely brought into close contact with each other.</p><p>According to this configuration, it is possible to further increase the density of the coil end and to further reduce the size. </p><p>In addition, since the unevenness is reduced by reducing the gap between the wires, the phono noise can be further reduced.</p><p>Further, since the rigidity of the winding is increased by contact between the wires, it is possible to reduce the short circuit between the wires or the iron core due to vibration or the magnetic noise.</p><p>Further, since the thermal conductivity between the wires is improved, the temperature of the wires becomes uniform and the temperature of the stator is further reduced.</p><p>Further, in each of the above embodiments, the insulator is inserted into the iron core side in advance when the element wire group is inserted into the stator iron core. However, the insulator may be pre-wound in the slot accommodating part of the element wire group and inserted into the iron core.</p><p>Alternatively, a long insulator may be placed on an iron core of a rectangular parallelepiped, and a group of wires may be inserted therefrom, so that the insulator is also accommodated in the slot at the same time. </p><p>In this case, in a subsequent step, the protruding insulator may be collectively removed. </p><p>Alternatively, the slot accommodating portion of the wire group may be molded with an insulating resin in advance. </p><p>In this case, mass productivity is remarkably improved.</p><p>Further, in each of the above embodiments, the stator iron core is formed by inserting an annular iron core 37 into the exterior iron core 38, and then integrating the tin core by heat fitting. However, the exterior iron core 38 is used. Instead, only an annular iron core having a thick core back may be used.</p><p>When the annular iron core 37 of the stator core is inserted into the external core and integrated by heat fitting, a gap is formed between the annular core 37 and the external core 38, and the output deteriorates. At the same time, the rigidity of the stator core is lowered, and the electromagnetic noise is deteriorated. </p><p>On the other hand, if the stator core is formed only of an annular core with a thick core back, there is no output decrease due to the gap between the annular core and the external core, and the stator core is composed of an annular core and an external core. There is no decrease in rigidity as a stator iron core due to the presence of the stator core, and deterioration of electromagnetic noise can be suppressed.</p><p>In addition, since the step of inserting the annular iron core 37 into the outer iron core 38 is omitted, the productivity of the stator is improved.</p><p>Further, in each of the above embodiments, a copper wire having a rectangular cross-section is used as the bare wire, but the bare wire is not limited to a copper wire having a rectangular cross-section. For example, a copper wire having a circular cross-section may be used.</p><p>In this case, since the formability of the wire is improved, arrangement and connection of the wire becomes easy, and the workability is improved.</p><p>In addition, the element wire is not limited to a copper wire material, For example, an aluminum wire material may be used.</p><p>Further, in each of the above embodiments, four wires are arranged in a radial direction in one row (in four layers) in the slot, and the turn portions of the wires are arranged in two rows in the circumferential direction, or six wires are arranged in the slot. Although it is described as being arranged in one row (in 6 layers) in the radial direction and the turn portions of the strands are arranged in 3 rows in the circumferential direction, 8 strands are arranged in a row (in 8 layers) in the radial direction in the slot. It can also be applied to the case where the turn parts of are arranged in 4 rows in the circumferential direction. </p><p>As the number (number of layers) of the element wires arranged in the radial direction in the slot increases, the number of rows in the turn portion increases, the number of connections increases. Therefore, the present invention is preferable.</p>
<p>Since the present invention is constituted as described above, the following effects are achieved.</p><p>According to this invention, a cylindrical stator core comprising a multilayer pearl core in which slots extending in the axial direction are formed in a plurality at a predetermined pitch in the circumferential direction, and a long strand are returned outside the slot on the end face side of the stator core, and the predetermined slot and a stator winding comprising a plurality of windings wound so as to alternately occupy layers with an inner layer in the slot in the slot depth direction at each time, the plurality of windings having the plurality of windings winding the strands in the slot at every predetermined number of slots. a first winding group in which the number of first windings per turn configured by being wound alternately occupying the inner layer and the outer layer in the slot depth direction is arranged at a pitch of one slot equal to the number of the predetermined number of slots; The first winding in one turn is configured to alternately occupy the inner layer and the outer layer in the slot depth direction in the slot at each time, and to be inverted by 180°C offset from the first winding at an electrical angle. and at least one set of winding assemblies composed of a pair with a second winding group arranged in the same number as the predetermined number of slots, wherein the stator winding comprises: Each phase having n slots in each pole is composed of a three-phase alternating current winding having a phase difference of 120° at an electrical angle, and the first winding and the second winding constituting the same phase in the winding assembly are located at the same address, respectively. It is connected by crossover wiring, and crossover wiring of the same address of each phase is arranged with a slot pitch of 4n or more. </p><p>In addition, the same address crossover connection of each phase is arranged with a slot pitch of 4n or more.</p><p>As a result, the number of junctions at the coil end is remarkably reduced, corrosion resistance and insulation are improved, and a plurality of windings can be collectively wound around the stator core as a winding assembly, and assembly performance and productivity are improved.</p><p>In addition, the crossover wiring of the same address of each phase can be arranged in the circumferential direction without contacting, and an increase in the height of the coil end can be suppressed.</p><p>Further, a cylindrical stator iron core comprising a laminated iron core in which a plurality of slots extending in the axial direction are formed at a predetermined pitch in the circumferential direction, and a long strand are returned from the slot on the end face side of the stator core, and are returned to each of the predetermined slots. and a stator winding comprising a plurality of windings wound so as to alternately occupy layers with an inner layer in a slot in a slot depth direction, wherein the plurality of windings shunt the strands in the slot at every predetermined number of slots. a first winding group in which the number of first windings of one turn formed by winding alternately occupying the inner and outer layers in the direction of each other are arranged in one slot pitch equal to the number of the predetermined number of slots; In the slot, the first winding in one turn is configured to alternately occupy the inner layer and the outer layer in the slot depth direction, and the first winding is offset by 180° at an electrical angle with the first winding and inverted. It consists of at least one set of wire assemblies consisting of pairs with a second winding group arranged in the same number as The stator winding is composed of a three-phase alternating current winding in which each phase having n slots in each pole phase has a phase value of 120° at an electric angle, and is composed of the first winding constituting the same phase in the high wire assembly, The first winding and the second winding constituting the same phase are connected by the same address crossover connection to different addresses between adjacent phases, and the same address crossover connection of each phase is arranged with a slot pitch of 2n or more. have.</p><p>Due to this, the joint area at the coil end is significantly reduced, corrosion resistance and insulation are improved, and at the same time, a plurality of windings can be collectively wound on the stator core by using a winding assembly, and assembly performance and productivity are improved.</p><p>In addition, the crossover wiring of the same address of each phase can be arranged in the circumferential direction without contacting, and an increase in the height of the coil end can be suppressed.</p><p>In addition, the arrangement of crossover wiring of the same address in each phase can be concentrated, and the wiring workability can be improved.</p><p>In Fig., two sets of the winding assemblies are wound in two rows in a radial direction on the stator iron core, and each phase constituting the three-phase AC winding is wound in the same slot group by connecting the first and second windings in series. Since the windings of 4 turns are configured, a 3-phase AC winding having 4 turns of each phase can be easily constructed.</p><p>Further, in each phase of the three-phase AC winding, the winding ends of the first and second windings between the two sets of the winding assemblies are connected by crossover connection of two adjacent addresses, and in one set of the winding assemblies, The winding ends of the first and second windings are connected by crossover wiring at the same address in one place, and the windings of 4 turns are connected by crossover wiring at the same address in one place to constitute 4 turns of winding. The connection part has a simple structure and the connection workability can be improved.</p><p>Further, in each phase of the three-phase AC winding, the winding ends of the first and second windings in the winding assembly of each pair are connected by crossover wiring at the same address, respectively, and the surface of the winding assembly of each pair Since the winding ends of the first and second windings are connected by a crossover connection of one adjacent address and are composed of 4 turns of winding, the crossover connection has a simple structure, and wiring workability can be improved.</p><p>In addition, the three-phase winding assembly is wound on the stator core in a radial direction in three rows, and the first and second windings in which each phase constituting the three-phase AC winding is wound in the same slot group are connected in series. Since it is composed of 6 turns of winding, a 3-phase AC winding with 6 turns of each phase can be easily constructed.</p><p>In addition, since the same address crossover connection is performed using a metal terminal for crossover connection, clamps for fixing the winding ends to be connected are unnecessary, the number of parts can be reduced, and the length of the winding ends to be connected is shortened, and the dragging and bending work of the winding end is reduced.</p><p>In addition, since the winding ends constituting the neutral point of the three-phase AC winding are connected using a metal terminal for neutral point connection, clamps for fixing the winding ends to be connected are unnecessary, and the number of parts can be reduced, The length of the winding end to be connected is shortened, and the dragging and bending work of the winding end is reduced.</p><p>In addition, since the neutral point lead is formed integrally with the metal terminal for the neutral point connection, there is no need to newly install a lead for outputting the neutral point current of the three-phase AC winding, and the wiring workability can be improved.</p><p>In addition, since the metal terminal for crossover connection and the metal terminal for neutral point connection are integrated with an insulating resin, the terminal arrangement process in the AC wiring operation is one circuit, and the work man-hours can be reduced.</p><p>In addition, since the first and second windings are connected by arc welding, a high bonding strength can be obtained and reliability can be improved.</p><p>Moreover, since the cross-sectional shape of the said element wire is substantially flat, the contact area of a joint part can be enlarged and joint strength can be raised.</p><p>In addition, since the coil end of the stator winding is molded with an insulating resin, the junction is buried in the insulating resin, and corrosion resistance and insulation are improved, and deviation of the junction due to vibration can be prevented.</p>
1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| WO2020159821A1 | Cited by | World Intellectual Property Organization (WIPO) | International search |
| CN113396528A | Cited by | China | Search report |
| US11025117B2 | Cited by | United States of America | Applicant |
| CN113412569A | Cited by | China | Search report |
148 members in 5 offices
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|---|---|---|---|
| 2000011704 | Japan | – | |
| 2000011704 | Japan | A |
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Numbers
- Publication
- 2001-0076216
- Application
- 100060653
Titles4
- Korean
- 교류발전기의 고정자
- English
- stator of alternator
- Unlabeled
- 교류발전기의 고정자{STATOR FOR AN ALTERNATOR}
- Unlabeled
- stator of an alternator
Classification
- CPC, 5
- H02K3/12
- H02K15/02
- H02K3/28
- H02K2203/09
- H02K3/50
- IPC, 11
- H02K3 04
- H02K1 16
- H02K3 12
- H02K3 28
- H02K3 50
- H02K9 06
- H02K15 00
- H02K15 02
- H02K15 04
- H02K15 06
- H02K19 22