The invention discloses a load current detection circuit, a detection method and a light hybrid automobile. The load current detection circuit comprises a high-side driving module, a load, a current conditioning module, a detection resistor and a pre-charging module. The input end of the high-side driving module is connected with a first power line, the output end is connected with a load, and the control end is connected with a second power line; the first input end of the current conditioning module is connected with the output end of the high-side driving module, the second input end is connected with the output end of the pre-charging module, and the output end is connected with the detection resistor; the input end of the pre-charging module is connected with the first power line. According to the technical scheme provided by the embodiment of the invention, the load current is mirrored into the detection current by the current conditioning module, so that a bypass resistor or a magnetic sensor with a relatively small resistance value and a very large package does not need to be arranged to calculate the load current, the circuit can be simplified, and the cost can be saved.
本发明公开了一种负载电流检测电路、检测方法和轻混汽车。负载电流检测电路包括高边驱动模块、负载、电流调理模块、检测电阻和预充电模块;高边驱动模块的输入端连接第一电源线,输出端连接负载,控制端连接第二电源线;电流调理模块的第一输入端与高边驱动模块的输出端连接,第二输入端与预充电模块的输出端连接,输出端连接检测电阻;预充电模块的输入端连接第一电源线,控制端连接第二电源线。本发明实施例提供的技术方案,电流调理模块将负载电流镜像为检测电流,从而无需设置阻值较小但封装很大的旁路电阻或磁传感器来计算负载电流,能够简化电路并节约成本。
Load current detection circuit, detection method and light hybrid automobile
负载电流检测电路、检测方法和轻混汽车
2024-08-02
Patent
Electronic Resource
Chinese
Circuit for automobile electronic low-side load current control
European Patent Office | 2024
|Plug connector detection circuit and method and automobile circuit system
European Patent Office | 2023
|