The embodiment of the invention provides an interface protection circuit, a protection system, a vehicle and a protection method. The interface protection circuit comprises an interface module used for being electrically connected with an interface; a voltage protection module which comprises a switch unit, a divider resistor and a first control switch, wherein the first end of the switch unit and the first end of the divider resistor are electrically connected with the output end of the interface module; a voltage output module which comprises a first voltage output end and a second voltage output end, wherein the first voltage output end and the second voltage output end are electrically connected with the second end of the first control switch alternatively, the first voltage output end is used for outputting first voltage, the second voltage output end is used for outputting second voltage, and the first voltage is higher than the second voltage; and a voltage comparison module which comprises a comparator. According to the embodiment of the invention, the technical problem of poor safety or stability of the interface caused by low voltage or overvoltage of the interface can be solved.
本申请实施例提供了一种接口保护电路、保护系统、车辆及保护方法。该接口保护电路,包括:接口模块,用于与接口电连接;电压保护模块,包括开关单元、分压电阻和第一控制开关;开关单元的第一端和分压电阻的第一端均与接口模块的输出端电连接;电压输出模块,包括第一电压输出端和第二电压输出端,第一电压输出端和第二电压输出端以择一的方式与第一控制开关的第二端电连接;第一电压输出端用于输出第一电压,第二电压输出端用于输出第二电压,第一电压高于第二电压;电压比较模块,包括比较器。本申请实施例能够解决由于接口的低压或者过压而带来的接口的安全性或稳定性差的技术问题。
Interface protection circuit, protection system, vehicle and protection method
接口保护电路、保护系统、车辆及保护方法
2021-11-12
Patent
Electronic Resource
Chinese
IPC: | H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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