一种基于SOC补偿器的并联型 电池系统等效电路模型

以锂离子电池为载体的电源系统为航天器稳定、可靠运行提供了一种有效 的方式。通过多个电池单体的并联可扩大电池系统容量，即并联型电池系统。针对锂离 子并联型电池系统的工作特性，因电池单体性能参数不一致而难以被准确表征的问题， 分析各电池单体性能参数与电池系统性能参数的扩展关系及并联电路工作特性，提出一 种基于SOC 补偿器的并联型电池系统等效电路模型；在Matlab/Simulink 环境下搭建电池 系统仿真平台，通过仿真结果与实验数据对比分析验证所提出模型的准确性。

A Equivalent Circuit Model of Parallel-connected Li-ion Battery System Based on SOC Compensator

As a valid alternative, power system with li-ion battery is an effective method to maintain the spacecraft stable and reliable operation .Parallel-connected battery system (PBS) will supply high capacity when cells are connected in parallel. To resolve the problem which the PBS operation characteristics can not be illustrated accurately due to cell inconsistent quality. The cell performance parameters variation mechanisms and the rules of battery system performance parameter expansion are analyzed in detail. an equivalent circuit model based on SOC compensator is presented to predict correctly the PBS working characteristics. A simulation plat of battery system is built in Matlab/Simulink circumstance. The proposed model has been validated by the contrast between simulation results and experimental data.