The invention discloses a relay bilateral driving circuit and an abnormality diagnosis method thereof. Control signals of the same type are sent to the control ends of the high-side and low-side driving modules to control the high-side and low-side driving modules to be closed or disconnected at the same time so as to obtain a high-side feedback signal of the high-side driving module and a low-side feedback signal of the low-side driving module. And fault diagnosis of the relay is carried out according to the type of the control signal, the high-side feedback signal and the low-side feedback signal. According to the relay bilateral driving circuit, the problem of misoperation of the relay caused by short circuit or open circuit faults of the output end of the single-side driving circuit can be avoided, fault diagnosis of the relay can be accurately carried out, and the safety and reliability of a vehicle are improved.
本发明公开了一种继电器双边驱动电路及其异常诊断方法。通过向高低边驱动模块的控制端发送同类型控制信号,以控制高低边驱动模块同时闭合或同时断开,以获取高边驱动模块的高边反馈信号和低边驱动模块的低边反馈信号,并根据控制信号的类型、高边反馈信号和低边反馈信号进行继电器的故障诊断。利用本申请能够避免单边驱动电路的输出端发生短路或开路故障的时候造成继电器误动作的问题,并且能够准确进行继电器的故障诊断继电器双边驱动电路,提升了车辆的安全性和可靠性。
Relay double-side driving circuit and abnormity diagnosis method thereof
一种继电器双边驱动电路及其异常诊断方法
2025-01-03
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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