Temperature sensing cooling device and power supply system thereof

Temperature sensing heat sink and power supply system thereof

Temperature Sensing Cooling Device And Power Supply System Thereof

The present invention relates to a temperature sensing heat sink and a power supply system thereof, and more particularly to a temperature sensing heat sink suitable for a power supply device and a power supply system thereof.

Due to advances in technology, the calculation and processing speed of integrated circuits are also fast, so the power supply device needs to provide higher output power to meet the integrated circuit (CPU) and drive its internal devices, thereby causing the power supply device. More heat is generated, and the accumulated heat will lose or damage the output power of the power supply or the operating efficiency of the integrated circuit.

Furthermore, when the computer is turned off (Soft Off), the cooling fan is stopped by the power supply at the same time, and the operating temperature of the electronic components, the rectifying components, or the transformer in the integrated circuit is already quite high, and the cooling fan suddenly stops the wind. When blowing, the residual heat will gradually accumulate due to the wind, and its temperature will rise suddenly. Its temperature often exceeds the normal working temperature and lasts for a long time, which is the so-called temperature recovery phenomenon. Stage time often causes damage to the integrated circuit or the aforementioned electronic components or affects the service life of the system.

The present invention aims to provide a heat sink with temperature sensing and a power supply system thereof to solve the above problems.

The present invention provides a temperature sensing heat sink for a power supply The device includes a main power module and a standing power module, and the temperature sensing device includes a heat dissipating fan, a sensing unit and a control unit. The sensing unit is configured to sense a temperature of the power supply device to generate a temperature signal. The control unit is coupled between the power supply device, the sensing unit and the cooling fan, and the control unit is provided with a threshold. When the main power module supplies power to the cooling fan, the control unit adjusts the wind speed of the cooling fan according to the temperature signal output by the sensing unit. When the standing power module supplies power to the cooling fan, the control unit outputs a first signal or a second signal to the cooling fan according to the judgment result of the temperature signal and the threshold value to control the operation of the cooling fan.

In an embodiment of the present invention, when the standby power module supplies power to the cooling fan, when the control unit determines that the temperature signal is higher than or equal to the threshold, the control unit outputs the first signal to the cooling fan to control the cooling fan according to the first The signal operates.

In an embodiment of the present invention, when the standby power module supplies power to the cooling fan, when the control unit determines that the temperature signal is lower than the threshold, the control unit outputs a second signal to the cooling fan to control the cooling fan to stop according to the second signal. Operation.

In an embodiment of the present invention, the temperature sensing device further includes a power converter coupled between the power supply device and the control unit, and the power converter is coupled to the power input end of the power supply device, and the power is The power converter step-down rectification is supplied to the control unit.

In an embodiment of the present invention, the main power module supplies power required for the operation of the computer motherboard. When the main power module is turned off, the standing power module continuously supplies power to the computer motherboard, and the main power module includes An input rectification and filtering circuit, a switching component, a power transformer, an output rectification and filtering circuit, and a pulse width modulation control circuit, the sensing unit is configured to sense the temperature of the switching component or the power transformer.

In an embodiment of the present invention, the temperature sensing heat sink receives power of the main power module or the standing power module, wherein the main power module outputs power to the temperature sense when the main power module is in the working state. The heat sink is measured. When the power module is in the working state, the power supply from the standing power module provides heat dissipation for temperature sensing. Device.

The present invention provides a power supply system including a main power module, a standing power module and a heat sink with temperature sensing. The main power module supplies the power required to operate the computer motherboard. The standing power module is coupled to the main power module. When the main power module is turned off, the standing power module continuously supplies power to the computer motherboard. The heat sink with temperature sensing is coupled to the main power module and the standing power module.

The specific means of the present invention is to sense the temperature of the power supply device by using the sensing unit to generate a temperature signal to the control unit. When the main power module supplies power to the cooling fan, the control unit outputs the temperature signal according to the sensing unit. To adjust the wind speed of the cooling fan, when the standing power module supplies power to the cooling fan, the control unit controls the operation of the cooling fan by outputting the first or second signal according to the determination result of the threshold value and the temperature signal, thereby improving the power supply. The opportunity for the output power of the device.

The above description of the present invention and the following description of the embodiments are provided to illustrate and explain the principles of the present invention, and to provide further explanation of the scope of the patent application of the present invention.

<p>PPower supply system</p><p>1Heat-sensing heat sink</p><p>10 cooling fan</p><p>11Sensor unit</p><p>12Control unit</p><p>14Power Converter</p><p>8Computer motherboard</p><p>9Power supply unit</p><p>90Main power module</p><p>900Input rectification and filtering circuit</p><p>902Exchange components</p><p>904Power Transformer</p><p>906Output rectification and filtering circuit</p><p>908 Pulse width modulation control circuit</p><p>92Standby power module</p><p>94 input</p>

1 is a block diagram of a circuit with a temperature sensing heat sink according to an embodiment of the present invention.

2 is a block diagram of a circuit with a temperature sensing heat sink according to another embodiment of the present invention.

1 is a block diagram of a circuit with a temperature sensing heat sink according to an embodiment of the present invention. Please refer to Figure 1. A power supply system P includes a temperature sensing heat sink 1 and a power supply unit 9. This embodiment does not limit the aspect of FIG. The heat sink 1 with temperature sensing is applied to a power supply device 9 , and the heat sink 1 with temperature sensing includes a heat dissipation fan 10 , a sensing unit 11 and a control list Element 12 and a power converter 14. In practice, the power supply device 9 includes a main power module 90 and a standing power module 92. The main power module 90 supplies power required for the computer motherboard 8 to operate. When the main power module 90 is turned off, standing. The power module 92 continuously supplies power to the computer motherboard 8.

In addition, the computer motherboard 8 is, for example, a personal computer motherboard, a notebook motherboard or a tablet motherboard, a mobile communication device motherboard, or a personal digital assistant (PDA) motherboard. This embodiment does not limit the computer motherboard. 8 aspect.

The heat-sensing device 1 with temperature sensing receives power from the power input terminal 94 of the power supply device 9, wherein the power converter 14 is coupled between the power supply device 9 and a control unit 12, and the power converter 14 is connected to the power supply device. The power input terminal 94 of 9 is connected, and the power is stepped and rectified by the power converter 14 to the control unit 12 and the sensing unit 11, wherein the control unit 12 obtains the power supply from the power converter 14.

When the main power module 90 is in the working state, the main power module 90 supplies power to the control unit 12 and the cooling fan 10. In practice, when the main power module 90 is powered to the cooling fan 10, the control unit 12 performs the wind speed adjustment of the cooling fan 10 according to the temperature signal output by the sensing unit 11, thereby providing appropriate airflow to assist the power supply. The device 9 dissipates heat. For example, the higher the temperature sensed by the sensing unit 11, the lower the rotational speed of the cooling fan 10, thereby improving the heat dissipation operation of the power supply device 9.

When the standby power module 92 is in the working state, the sensing unit 11 senses the temperature of the power supply device 9 and generates a temperature signal. When the temperature signal is lower than the threshold, the control unit 12 turns off the cooling fan 10 The power is outputted, whereby the cooling fan 10 is controlled by the control unit 12 to control the opening and closing timing of its operation.

In detail, the heat dissipation fan 10 includes, for example, a fan and a fan frame. The fan and the fan frame may be integrally formed or combined. The embodiment does not limit the aspect of the heat dissipation fan 10. In practice, the fan frame is locked on the heat dissipation fin or the casing. When the fan is started and rotated at a high speed, the heat dissipation fan 10 dissipates heat from the heat dissipation fin or the internal environment of the casing.

In practice, the sensing unit 11 is electrically connected to the control unit 12, and the sensing unit 11 is configured to sense the temperature of the power supply device 9 to generate a temperature signal to the control unit 12, so that the control unit 12 controls the heat dissipation according to the temperature signal. The operation of the fan 10.

In detail, the sensing unit 11 is, for example, a temperature sensing wafer, a thermal sensing wafer or a thermistor, and the embodiment does not limit the aspect of the sensing unit 11. In addition, the sensing unit 11 is disposed, for example, in a portion where the power supply device 9 consumes a relatively high amount of electricity, a portion that generates a high heat, or a portion that is a critical component, such as a power transformer due to a winding number or a core. The power transformer is caused to generate higher heat. Therefore, the sensing unit 11 can be disposed adjacent to the power transformer, whereby the sensing unit 11 can generate a relatively high temperature temperature signal to the control unit 12. This embodiment does not limit the position at which the sensing unit 11 is disposed at the power supply device 9.

When the computer is turned off, the computer motherboard 8 notifies the main power module 90 that the feedback signal is turned off, so that the standing power module 92 is turned on. When the standing power module 92 supplies power to the cooling fan 10, the control unit 12 responds according to the temperature signal. The result of the determination of the threshold value is to output a first signal or a second signal to the cooling fan 10 to control the operation of the cooling fan 10.

It is worth mentioning that the sensing unit 11 can also actuate the opening sensing or the actuation closing sensing. For example, when the main power module 90 is switched to the standing power module 92, the standing power module 92 is powered. When the control unit 12 is given, the sensing unit 11 actuates the opening sensing. For example, when the computer is turned off, the standing power module 92 supplies power to the control unit 12 to enable the sensing unit 11 to actuate the opening sensing; or when the main power module 90 or the standing power module 92 supplies power to the control unit 12, The sensing unit 11 is activated to turn on the sensing; or when the temperature signal sensed by the sensing unit 11 is lower than the threshold, the sensing unit 11 activates the off sensing, and the embodiment does not limit the operation of the sensing unit 11 Aspect.

The control unit 12 is coupled between the sensing unit 11 and the heat dissipation fan 10, and the control unit 12 is provided with a threshold. In practice, the control unit 12 is, for example, a linear control chip or a pulse width modulation control chip, and the embodiment does not limit the aspect of the control unit 12. In detail, the threshold value indicates, for example, that the control unit 12 controls the heat dissipation The threshold value of the fan 10 is a predetermined value, and the threshold value is, for example, 50 degrees, 60 degrees, or 70 degrees. The value of the threshold value is not limited in this embodiment, and can be freely designed by a person having ordinary knowledge in the technical field. In addition, after the control unit 12 receives the voltage provided by the standing power module 92, the control unit 12 operates according to the threshold.

When the control unit 12 receives the temperature signal output by the sensing unit 11, the control unit 12 determines the magnitude relationship between the temperature signal and the threshold value to output a first signal or a second signal to the cooling fan 10 to control the cooling fan. 10 operations.

For example, when the control unit 12 determines that the temperature signal is higher than or equal to the threshold, the control unit 12 outputs the first signal to the cooling fan 10 to control the cooling fan 10 to operate according to the first signal, for example, the cooling fan 10 continues to be in the power supply device 9. The component performs a heat dissipation action to suppress the temperature of the component when it is warmed back. For example, when the control unit 12 determines that the temperature signal is lower than the threshold, the control unit 12 outputs a second signal to the cooling fan 10 to control the cooling fan 10 to stop operating according to the second signal, thereby achieving the power saving function of the standby mode. This embodiment does not limit the control unit 12 to control the operating state of the heat dissipation fan 10 according to the first or second signal.

In other embodiments, the control unit 12 can also be provided with a critical range, for example, indicating that the control unit 12 controls a predetermined temperature range in which the cooling fan 10 operates, and the critical range is, for example, 50-90 degrees, 60-100 degrees, or 70-150 degrees, etc., this embodiment does not limit the size of the critical value, and those skilled in the art can freely design as needed.

When the control unit 12 receives the temperature signal output by the sensing unit 11, the control unit 12 determines the magnitude relationship between the temperature signal and the critical range to output a first signal or a second signal to the cooling fan 10 to control heat dissipation. The operation of the fan 10. When the control unit 12 determines that the temperature signal is in the critical range, the control unit 12 outputs the first signal to the cooling fan 10 to control the cooling fan 10 to operate according to the first signal. When the control unit 12 determines that the temperature signal is lower than the lower limit of the critical range, the control unit 12 outputs a second signal to the cooling fan 10 to control the cooling fan 10 to stop operating according to the second signal.

In addition, when the control unit 12 determines that the temperature signal is higher than the upper limit of the critical range, the control unit 12 can also output the first signal to the cooling fan 10 to control the cooling fan 10 to increase the heat dissipation operation according to the first signal.

For example, the critical range is, for example, 50-90 degrees, so the upper limit of the critical range is 90 degrees, and the lower limit of the critical range is 50 degrees, when the temperature signal sensed by the sensing unit 11 is, for example, 75 degrees. Thereby, the control unit 12 outputs the first signal to the cooling fan 10 to control the operation of the cooling fan 10, for example, the rotation speed of the cooling fan 10 is operated at 60 revolutions per second. When the temperature signal sensed by the sensing unit 11 is, for example, 100 degrees, the control unit 12 outputs the first signal to the cooling fan 10 to control the cooling fan 10 to increase the heat dissipation operation, for example, the rotation speed of the cooling fan 10 is from 30 per second. The turn is raised to 60 rpm. When the temperature signal sensed by the sensing unit 11 is, for example, 45 degrees, the control unit 12 outputs a second signal to the cooling fan 10 to control the cooling fan 10 to stop operating. This embodiment does not limit the manner in which the heat dissipating fan 10 operates according to the first or second operation, and is generally freely designed by those skilled in the art as needed.

Next, the detailed structure of the heat sink with temperature sensing and its actuation will be further described.

2 is a block diagram of a circuit with a temperature sensing heat sink according to another embodiment of the present invention. Please refer to Figure 2. 2 shows a heat-dissipating device 1 with temperature sensing, and the temperature-sensing heat-dissipating device 1 can also sense the temperature of the power supply device 9 through the sensing unit 11, and the control unit 12 can also control the cooling fan 10 The same components in FIG. 2 and FIG. 1 are denoted by the same reference numerals, and the embodiment does not limit the aspect of the heat-dissipating device 1 with temperature sensing.

The main power module 90 includes an input rectification and filtering circuit 900, an exchange component 902, a power transformer 904, an output rectification and filtering circuit 906, and a pulse width modulation control circuit 908. In practice, the input rectification and filtering circuit 900 is coupled between the input voltage and the switching element 902, and the switching element 902 is coupled between the power transformer 904 and the pulse width modulation control circuit 908, and the output rectification and filtering circuit 906 is coupled to the power. Between the transformer 904 and the output voltage, the sensing unit 11 is used to sense the temperature of the switching element 902 or the power transformer 904.

In detail, the input rectification and filtering circuit 900 is used to rectify the input voltage and filter the noise, and the switching element 902 is used to exchange the primary side DC voltage supplied via the primary winding of the power transformer 904, wherein the switching element 902 is, for example, transmitted. The N-type MOSFET or the P-type MOSFET is implemented, and the embodiment does not limit the aspect of the switching element 902.

In practice, the turn-on or turn-off of switching element 902 is controlled by pulse width modulation control circuit 908, while switching element 902 operates in a fixed switching frequency or a range of switching frequencies such that switching element 902 generates thermal energy if exchanged. Element 902 accumulates thermal energy to be lost or damaged, thereby affecting the power efficiency and accuracy of the output voltage. Therefore, the present invention sets the sensing unit 11 near the switching element 902 to sense the temperature of the switching element 902. When the temperature signal is above the threshold, the control unit 12 controls the cooling fan 10 to operate to accumulate the switching element 902. Thermal energy is expelled into the air environment, thereby effecting over temperature protection of the exchange element 902.

The power transformer 904 is used for voltage conversion or power conversion. The power transformer 904 is, for example, an isolation transformer, a magnetic saturation transformer, a leakage transformer or a resonance transformer. This embodiment does not limit the aspect of the power transformer 904. The power transformer 904 causes the power transformer 904 to generate higher heat due to the relationship between the number of turns of the primary side and the secondary side or the core. If the power transformer 904 accumulates thermal energy, it is lost or damaged, thereby affecting the conversion of the output voltage. Power performance and accuracy. Therefore, the present invention sets the sensing unit 11 near the power transformer 904 to sense the temperature of the power transformer 904. When the temperature signal is higher than the threshold, the control unit 12 controls the cooling fan 10 to operate to accumulate the power transformer 904. Thermal energy is discharged into the air environment, thereby performing over-temperature protection of the power transformer 904.

Therefore, as described above, after the computer is turned off or the main power module 90 is turned off, the sensing unit 11 can sense the temperature of the switching element 902 or the power transformer 904 to the control unit 12, and the control unit 12 according to the temperature signal and the criticality. Value relationship, come The operation of the cooling fan 10 is controlled. Therefore, the present creation can continue to forcibly dissipate heat from the electronic components inside the power supply device 9 to prevent heat build-up and temperature rise effects.

In summary, the present invention is to sense the temperature of the power supply device by using the sensing unit to generate a temperature signal to the control unit. When the main power module supplies power to the cooling fan, the control unit outputs according to the sensing unit. The temperature signal is used to adjust the wind speed of the cooling fan. When the standing power module supplies power to the cooling fan, the control unit controls the operation of the cooling fan by outputting the first or second signal according to the determination result of the threshold value and the temperature signal; or The control unit outputs the first or second control of the operation of the cooling fan according to the determination result of the critical range and the temperature signal, thereby increasing the chance of the output power of the power supply device. In addition, the sensing unit can also sense the temperature of the temperature protection component required by the switching component or the power transformer in the power supply device, so that the control unit controls the operation of the cooling fan according to the temperature signal. In this way, the temperature-sensing heat sink of the present invention enhances the convenience of operation.

This creation has already met the requirements of the new patent and applied in accordance with the law. However, the above disclosures are only preferred embodiments of the present invention, and the scope of rights of the present invention cannot be limited thereto. Therefore, the equal changes or modifications made according to the scope of the application of the present application are still covered by the present application.