The invention provides an insulation resistance detection circuit and method and a vehicle, and belongs to the technical field of insulation resistance detection, and the circuit comprises a partial voltage detection circuit, a totem pole inverter circuit and a zero-crossing signal detection circuit. Wherein the voltage division detection circuit comprises a detection port, a voltage division resistor and a control unit, the detection port is used for being connected with a load, and the load is simulated by connecting an insulation resistor and a Y capacitor in parallel; the detection port is further connected with the output end of the totem pole inverter circuit, the divider resistor is connected between the detection port and the control unit in series, and the control unit is further connected with the control end of the totem pole inverter circuit and the output end of the zero-crossing signal detection circuit. The input end of the zero-crossing signal detection circuit is connected with the output end of the totem pole inverter circuit; through the insulation resistance detection circuit provided by the invention, people near the vehicle can be prevented from getting an electric shock in the process of charging the load by the vehicle.
本发明提供了一种绝缘电阻检测电路、方法及车辆,属于绝缘电阻检测技术领域,所述电路包括:分压检测电路、图腾柱逆变电路及过零信号检测电路;其中,所述分压检测电路包括:检测端口、分压电阻及控制单元,其中,检测端口用于与负载连接,负载由绝缘电阻与Y电容并联模拟;检测端口还与图腾柱逆变电路的输出端连接,分压电阻串接在所述检测端口与所述控制单元之间,控制单元还分别与图腾柱逆变电路的控制端和过零信号检测电路的输出端连接,过零信号检测电路的输入端与图腾柱逆变电路的输出端连接;通过本发明所提供的绝缘电阻检测电路,可以在车辆为负载充电的过程中,避免车辆附近的人触电。
Insulation resistance detection circuit and method and vehicle
一种绝缘电阻检测电路、方法及车辆
2024-06-21
Patent
Electronic Resource
Chinese
Insulation resistance detection method, circuit and device, controller and vehicle
European Patent Office | 2024
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|European Patent Office | 2024
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