The invention is suitable for the technical field of vehicles, and relates to a vehicle high-voltage relay driving device, a BMS system and a vehicle. The vehicle high-voltage relay driving device comprises a CPU control chip, a trigger, a latch and a switch driver. The CPU control chip is respectively connected with the trigger and the latch; the trigger is connected with the latch; the latch is connected with the switch driver; the switch driver is further used for being connected with a high-voltage relay of the vehicle. And the trigger and the latch are configured in a way that when the CPU control chip is reset, the trigger outputs a low level to the first enable end of the latch, and the output of the latch does not change along with the input under the action of the low level, so that the high-voltage relay connected with the switch driver is kept in a current state. According to the invention, the problems that the CPU in the vehicle BMS is in the reset mode, so that the relay is powered off, the whole vehicle is easily out of control, and the driving safety is influenced can be solved.
本发明适用于车辆技术领域,涉及一种车辆高压继电器驱动装置、BMS系统及车辆。车辆高压继电器驱动装置包括:CPU控制芯片、触发器、锁存器和开关驱动器;CPU控制芯片分别连接触发器和锁存器;触发器连接锁存器;锁存器连接开关驱动器;开关驱动器还用于连接车辆的高压继电器;触发器和锁存器被配置为当CPU控制芯片复位时,触发器向锁存器的第一使能端输出低电平,锁存器在低电平作用下,输出不跟随输入变化,以使开关驱动器连接的高压继电器保持当前状态。本发明能够解决车辆BMS系统中的CPU在复位模式下将导致继电器下电,容易引起整车失控,影响行车安全的问题。
Vehicle high-voltage relay driving device, BMS system and vehicle
车辆高压继电器驱动装置、BMS系统及车辆
2024-04-30
Patent
Electronic Resource
Chinese
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