The invention provides a driving circuit of a vehicle cooling fan, the driving circuit is used for driving a motor of the vehicle cooling fan, the driving circuit comprises an inverter circuit and an electrolytic capacitor which are connected between two power supply terminals, and a switch control unit, the switch control unit comprises a first resistor, a second resistor, a first capacitor, a second capacitor, a first switch tube and a second switch tube; the control end of the first switch tube receives a level representing the state of an ignition switch of a vehicle, the first conduction end is connected with an electronic control unit, and the second conduction end is connected with the control end of the second switch tube; the first conduction end of the second switch tube is connected with the power supply module, and the second conduction end is connected with the positive power supply terminal; the first resistor is connected between the first conduction end of the second switch tube and the control end of the first switch tube; the first capacitor is connected between the control end and the first conduction end of the first switch tube; and the second resistor and the second capacitor are connected in series between the second conduction end and the control end of the second switch tube.
本发明提供一种车辆冷却风扇的驱动电路,所述驱动电路用于驱动所述车辆冷却风扇的电机,包括连接于两个电源端子之间的逆变电路和电解电容、以及开关控制单元,所述开关控制单元包括第一和第二电阻、第一和第二电容、以及第一和第二开关管;所述第一开关管的控制端接收表示车辆的点火开关状态的电平,第一导通端连接一电子控制单元,第二导通端连接第二开关管的控制端;第二开关管的第一导通端连接电源模块,第二导通端连接正电源端子;第一电阻连接于第二开关管的第一导通端与第一开关管的控制端之间;第一电容连接在第一开关管的控制端与第一导通端之间;第二电阻及所述第二电容串联连接在第二开关管的第二导通端与控制端之间。
Driving circuit of vehicle cooling fan and vehicle heat dissipation system
车辆冷却风扇的驱动电路及车辆散热系统
2022-06-07
Patent
Elektronische Ressource
Chinesisch
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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