一种集散式动力电池组动态均衡管理系统

提出一种集散式动力电池组动态均衡管理系统.该系统由电池监测子系统、电池均衡子系统、电池管理子系统和上位机组成.各子系统之间通过单总线通信,管理子系统与上位机之间通过CAN总线进行通信.该系统可以进行动力电池组的充、放电均衡管理.充放电均衡子系统采用的小型充电机的数目少于或等于单体电池的个数,这样电池的均衡控制更为灵活,避免了一对一的配备方式,简化了系统结构,降低了成本,提高了系统的可靠性.详细阐述系统的构成和工作原理,并以停车外接均衡充电模式和行车均衡模式为例,进行了系统的均衡实验.

A Novel Distributed Equilibrium and Management System of Dynamic Battery Pack

A novel distributed equilibrium and management system (DEMS) of dynamic battery power pack is brought forward in this paper. It consists of battery monitoring subsystem, equilibrium subsystem, management subsystem and upper control unit. Monobus is applied to the subsystem communication. Controller area network(CAN)bus is applied to the communication between the management subsystem and the upper control unit. The DEMS is provided with the function of dynamic battery power pack equilibrium and management whether in charging mode or in discharging mode. The equilibrium subsystem consists of mini chargers and the amount of charger is no more than that of the batterys. This leads to more flexible equilibrium controlling and the system configuration becomes more simple because of the avoidance of one-to-one equipment. The cost is knock-down and the reliability is improved. The topology structure and the working principle is expounded in detail. Taking the parking mode and running mode as examples, the system equilibrium tests are carried out. The test results indicate that the DEMS can precisely distinguish the equilibrium state of the battery pack whether it works in charging mode, discharging mode or static mode. At the same time, the dynamic and real-time equilibrium of the battery pack can be brought to success.