Safety Analysis of Electric System of Pure Electric Vehicles
The electrical system of pure electric car mainly includes low-voltage electrical system, high-voltage electrical system and CAN communication information network system.
● The low-voltage electrical system adopts a 12 V power supply system. In addition to powering conventional low-voltage electrical appliances such as lighting systems, entertainment systems, and wipers, it also provides power for vehicle controllers, battery management systems, motor controllers, and DC/DC converters. And electric air conditioner and other high-voltage accessories equipment control loop power supply;
● High-voltage electrical systems mainly include power battery packs, electric drive systems, DC/DC voltage converters, electric air conditioners, electric heaters, on-board charging systems, off-board charging systems, and high-voltage electrical safety management systems;
● The CAN bus network system is used to realize the mutual communication between the vehicle controller and the motor controller, as well as the battery management system, the high voltage safety management system, the electric air conditioner, the on-board charger and the off-board charging equipment and other control units.