The invention relates to an automobile starting and stopping
protective system and method. The automobile starting and stopping
protective system comprises a storage battery, an electric quantity sensor and an automobile body controller which is connected with a
CAN bus. The electric quantity sensor is arranged at the output end of the storage battery, is used for detecting the
discharge current of the storage battery and is connected with the communication end of the automobile body controller through a LIN
bus. When an ignition lock ON gear switch is disconnected, the automobile body controller sends a network dormant message through the
CAN bus, so that idle
electronic equipment connected with the
CAN bus enters the dormant state, and the automobile body controller enters the dormant state after the
discharge current of the storage battery is smaller than a first threshold value. After the automobile body controller enters the dormant state, if the
discharge current of the storage battery is larger than a second threshold value, constant
electricity output by the storage battery is controlled to be disconnected in the set time, and a
forced outage message and a failure warning message are sent through the CAN
bus. Through the automobile starting and stopping
protective system and method, the safety of an automobile can be improved, and the
energy consumption of the automobile is reduced.