分布式电动汽车锂电池智能均衡系统设计

Design of lithium battery intelligent balanced system for distributed electric vehicle

动力电池的均衡管理是电池管理系统的关键技术,可以提高电动汽车电池组的续航里程和使用寿命。针对分布式电动汽车需要更多电力支持的需求,提出了一种智能电池管理系统(SBMS),采用基于电感的Buck-Boost的改进电路,结合模糊控制技术,在Matlab中完成了该电路的仿真。结果表明,该控制电路能提高均衡速度和效率。通过实验测试,验证了改进方案的实用性和可行性。

The balance management of power battery is the key technology of battery management system, which can improve the range and service life of electric car battery pack. A smart battery management system (SBMS) was proposed for the need of more power support for distributed electric vehicles. The inductance based improved Buck-Boost circuit was adopted and simulated in Matlab by combining the fuzzy control technology. The results show that the control circuit can improve the equilibrium speed and efficiency. The practicability and feasibility of the improved scheme was verified by experiment.