Vehicle lithium battery management system

The utility model provides a vehicle lithium battery management system, which comprises an MCU (micro-processing) module, a power supply module, a total voltage acquisition module, a current acquisition module, an insulating detection system; a relay control and diagnosis module, an HANDSHAKE (signal) receiving and sending module, a CAN receiving and sending module, a non-volatile memory module, and battery module monitoring units 1, 2 ... N. The management system can real-time monitor the voltage of individual lithium battery, balance and control the individual lithium battery with large status difference, and improve the consistence of lithium batteries. Meanwhile, the management system can conduct comprehensive monitoring and management of the total voltage, operating current, temperature, insulation state and battery SOC/SOH, and real-time transmit the data to other electric control systems of the entire vehicle through a CAN network. The system can conduct accurate monitoring and control of the state of the lithium battery system, take full use of the performance of the battery system, and ensure the safe and reliable operation of the lithium battery system.