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Heat radiating circuit and electronic device comprising heat radiating circuit

A technology for electronic equipment and circuits, which is applied in the field of heat dissipation circuits and electronic equipment with heat dissipation circuits, can solve the problems of variable speed of energy saving effect, adjust the rotation speed of fans, etc., and achieve the effect of reducing power consumption

Inactive Publication Date: 2013-10-23
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the pulse voltage is at a high level, the working voltage provided by the power module to the fan is constant, that is, the fan rotates at a constant speed, and the fan rotation speed cannot be adjusted according to the heat generation of the high-power heating element, and the energy-saving effect can be compared with the fan speed. worse

Method used

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  • Heat radiating circuit and electronic device comprising heat radiating circuit
  • Heat radiating circuit and electronic device comprising heat radiating circuit

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Experimental program
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Embodiment Construction

[0013] see figure 1 , which is a functional block diagram of the electronic device 100 in a preferred implementation manner. The electronic device 100 includes a power module 10 , a heating element 20 and a cooling circuit 30 . The electronic device 100 may be an electronic device with heat dissipation elements such as a computer, an air conditioner, and a television.

[0014] The power module 10 is used to supply power to the heating element 20 and the cooling circuit 30 . In this embodiment, the working voltage of the power module 10 is 5V.

[0015] The heating element 20 is used to receive the power supply voltage of the power module 10 to work and generate heat. In this embodiment, the heating element 20 is a high-power electronic element in the electronic device 100 .

[0016] The heat dissipation circuit 30 is used for dissipating heat from the heating element 20 . The cooling circuit 30 includes a sensing module 31 , a switch module 32 and a cooling module 34 .

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PUM

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Abstract

Provided is a heat radiating circuit, which is connected with a power supply module and is used for radiating heat of a heating element. The heat radiating circuit comprises a sensing module, a switch module and a heat radiating module. The sensing module is used for sensing heat generated by the heating element, and generating a control signal based on the sensed heat. The switch module has a presupposed value which is used for comparing a voltage value of the control signal and the presupposed value. When the voltage value of the control signal is larger than the presupposed value, an electrical connection between the power supply module and the heat radiating module is conducted and established. The sensing module generates different control signals according to different quantities of heat generated by the heating element. The switch module is used for outputting varying working voltages according the different control signals when the switch module is conducted. The heat radiating module is used for adjusting the heat radiating power of the heat radiating module according to the varying working voltages. The invention also provides an electronic device comprising the heat radiating circuit.

Description

technical field [0001] The invention relates to an electronic device, in particular to a cooling circuit and the electronic device with the cooling circuit. Background technique [0002] Electronic devices with high-power electronic components are usually provided with heat dissipation circuits. The heat dissipation circuit includes a power supply, a detection element, a pulse control chip, a triode and a fan. Fans are usually placed near high-power electronic components. The detection element is arranged close to the high-power electronic component, and is used to detect the heat of the high-power electronic component and generate a detection signal to the pulse control chip. The pulse control chip generates pulse voltages with different duty ratios according to the detection signal. The heat dissipation element adjusts heat dissipation of the heat dissipation element according to pulse voltages with different duty ratios. When the pulse voltage is at a high level, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K7/20
CPCH05K7/20209G06F1/20G06F1/206
Inventor 汪涛
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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