Heat dissipation principle of car air conditioner touch module

The automotive air conditioning touch control module is the core component of the air conditioning system. The functionality, comfort, and economy of the air conditioner depend on the reasonable control of the electronic components in the air conditioner system by the controller. A complex electronic component with multiple information processing capabilities will inevitably involve the need for heat dissipation. This time we will talk about the heat dissipation design of the blast speed control module.

The automobile air-conditioning system is mainly a device for cooling, heating, ventilating and purifying the air in the cab. At present, most automobile air-conditioning systems on the market use blower speed-regulating resistors. When the blower is working, a considerable part of the power supply is consumed by the resistors. The speed-regulating resistors themselves generate a lot of heat and must be dissipated in time.

In order to dissipate the heat of the speed control resistor in time, it is usually necessary to quickly transfer the heat to the heat sink with thermal grease. The thermal grease can make the heating device and the heat sink highly fit for rapid heat dissipation, and then use a blower to circulate the speed resistor to dissipate heat. , The temperature of the blowing speed regulating resistor itself will be stabilized in a relatively safe range when the blower works normally.