The invention discloses a control circuit for an electric control switch, and the circuit comprises a trigger chip which receives a real-time control signal and a PWM signal, and outputs a first control signal which is configured to be a signal for initially controlling the switching on or switching off of the electric control switch; the logic AND gate chip is used for receiving the first control signal and a safety state signal and outputting a second control signal, the safety state signal is configured to indicate whether the power management chip is in a normal state or not, the second control signal is configured to be a signal for finally controlling the relay to be switched on or switched off, and the safety state signal is configured to indicate whether the power management chip is in a normal state or not. The PWM signal can be continuously refreshed to generate a trigger signal only when the safety state signal is a normal state level value, and when the control unit is reset accidentally, the PWM signal is no longer refreshed and no longer generates the trigger signal, and the safety state signal keeps the normal state level value within a preset time. Power failure can be delayed when the control unit is reset accidentally, and safety is improved. The invention further discloses an electric vehicle and a control method.
本发明公开了用于电控开关的控制电路,包括:触发器芯片,接收实时的控制信号和PWM信号,输出第一控制信号,控制信号被配置为初始控制电控开关闭合或断开的信号;逻辑与门芯片,接收第一控制信号和安全状态信号,输出第二控制信号,其中,安全状态信号被配置为指示电源管理芯片是否处于正常状态,第二控制信号被配置为最终控制继电器的闭合或断开的信号,其中,仅在安全状态信号为正常状态电平值时,PWM信号能够不断被刷新以产生触发信号,当控制单元意外复位时,PWM信号不再被刷新不再产生触发信号,安全状态信号在预设时间内保持正常状态电平值。本发明能够在控制单元意外复位时延迟断电,提高安全性。本发明还公开了电动车辆和控制方法。
Control circuit for electric control switch, electric vehicle and control method
用于电控开关的控制电路、电动车辆和控制方法
2025-02-14
Patent
Electronic Resource
Chinese
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