The invention provides a vehicle protection circuit and system and a vehicle. The vehicle protection circuit is characterized in that a first input end of an operational amplifier is connected with one end of a controlled circuit, and a second input end of the operational amplifier is connected with the other end of the controlled circuit; the base of the first triode is connected with the output end of the operational amplifier, and the collector of the first triode is connected with the input end of the control circuit; when the controlled circuit is in an abnormal state, the first input end of the operational amplifier is used for collecting the reverse electromotive force of the controlled circuit and outputting an enable signal based on the reverse electromotive force, and the enable signal enables the control circuit to stop working; therefore, when the controlled circuit is abnormal, the vehicle protection circuit can interfere with the control circuit in time, so that the control circuit stops working in time, and the safety of the vehicle is ensured; in addition, it can be seen that the vehicle protection circuit is simple in structure, and the vehicle cost can be greatly reduced on the basis that the safety is ensured.
本发明提供一种车辆保护电路、系统及车辆,车辆保护电路包括:运算放大器的第一输入端与被控电路的一端相连,运算放大器的第二输入端与被控电路的另一端相连;第一三极管的基极与运算放大器的输出端相连,第一三极管的集电极与控制电路的输入端相连;当被控电路处于异常状态时,运算放大器的第一输入端采用于采集被控电路的反向电动势,并基于反向电动势输出使能信号,使能信号使得控制电路停止工作;如此,当被控电路出现异常时,车辆保护电路可及时对控制电路进行干涉,使得控制电路及时停止工作,进而确保车辆的安全性;并且可以看出,车辆保护电路结构简单,在确保安全性的基础上还可大幅降低车辆成本。
Vehicle protection circuit and system and vehicle
一种车辆保护电路、系统及车辆
2023-01-20
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
Interface protection circuit, protection system, vehicle and protection method
European Patent Office | 2021
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