The electrical system of pure electric cars 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, DC/DC converters and electric motors. Power supply for the control circuit of high-voltage accessory equipment such as air conditioners;
The high-voltage electrical system mainly includes 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 safety management systems, etc.;
The CAN bus network system is used to realize the mutual communication between the vehicle controller and motor controller, as well as control units such as battery management system, high voltage safety management system, electric air conditioner, on-board charger and off-board charging equipment.