Hybrid vehicle battery fault management system and management method thereof

Abstract

The invention aims to provide a reliable hybrid vehicle battery fault management system and a management method thereof. The management system comprises a vehicle control unit, a battery controller, a motor state monitoring module, a battery voltage monitoring module, a battery current monitoring module, a battery temperature monitoring module, a battery insulation monitoring module, a high voltage precharge monitoring module and a battery equalization monitoring module, and a high voltage loop interlocking monitoring module, wherein the motor state monitoring module, the battery voltage monitoring module, the battery current monitoring module, the battery temperature monitoring module, the battery insulation monitoring module, the high voltage precharge monitoring module and the battery equalization monitoring module are connected with the vehicle controller; the high voltage loop interlocking monitoring module is connected with the battery controller; the battery controller is connected with the vehicle controller and the relay controlling the on and off of a battery high voltage loop; and the vehicle controller is also connected with a fault prompt unit. The management system carries out treatment according to different battery faults and the operation conditions of a motor, ensures the safety of driving and drivers and passengers, improves the safety of a battery system and the service life of the battery pack and makes the whole battery system more reliable.

Description

technical field [0001] The invention relates to the technical field of management systems of hybrid electric vehicles, in particular to a battery management system of hybrid electric vehicles. Background technique [0002] Multiple battery packs used in hybrid electric vehicles, after they are connected in series to form a high-voltage battery pack, these battery packs will be unbalanced due to factors such as charging and discharging, battery temperature, etc. If this happens, the battery pack will not be repaired in time The repair and maintenance of these battery packs will affect the working efficiency and service life of these battery packs, reduce the power of the entire system, greatly affect the power supply of the car, and thus affect the overall performance and safety of the car. In addition, due to various reasons, the battery pack will also have problems such as insulation, overvoltage, and overcurrent that endanger the safety of drivers and passengers and drivin...

AI Technical Summary

Problems solved by technology

[0002] Multiple battery packs used in hybrid electric vehicles, after they are connected in series to form a high-voltage battery pack, these battery packs will be unbalanced due to factors such as charging and discharging, battery temperature, etc. If this happens, the battery pack will not be repaired in time The repair and maintenance of these battery packs will affect the working efficiency and service life of these battery packs, reduce the power of the entire system, greatly affect the power supply of the car, and thus affect the overall performance and safety of the car

In addition, due to various reasons, the battery pack will also have problems such as insulation, overvoltage, and overcurrent that endanger the safety of drivers and passengers and driving safety. Therefore, as an auxiliary power for hybrid vehicles, the reliability of the battery system is extremely important. It is necessary to detect the operating status and performance of the battery pack in real time under working conditions, and repair and maintain the battery pack in time to ensure the overall performance of the car and the safety of personnel

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