电池更换模式下电池管理系统的研究

A battery management system under the battery pack exchange mode

针对奥运会纯电动公交车更换电池的运行模式,提出了一种主从式结构的电池管理系统。此系统除了能在车载模式下实现电池状态监测、故障报警和整车通讯之外,还能完成电池分箱拆分后的充电、维护及重组等管理功能,与传统电池管理系统相比更具模块化和通用性特点。重点分析了这种模式下电池管理系统的系统构架、功能特点、状态估算等问题,提出了整车充电与分箱充电控制相结合、电池参数识别与电池重组相配合、电池状态自校正等多种特殊处理方法,较好配合了纯电动公交车的正常运行。

In order to meet the battery-exchange mode applied to pure electric buses in Olympic Games, this paper propeses a battery management system（BMS）with the master-slave structure. The BMS can work on the bus as a whole, also it can be applied to battery maintenance and charge when the series batteries are broken into battery packs. According to the battery-exchange mode, this paper analyzes the system architecture, the feature and the statue estimate of the BMS. Also it gives out the specific ways for the BMS to coordinate with the charger, recognize the parameters, recombine the battery packs, and calibrate the statue of battery packs for vehicle running.