论文标题
平行连接电池电流不平衡动力学
Parallel-Connected Battery Current Imbalance Dynamics
论文作者
论文摘要
在这项工作中，我们为两个平行连接的电池提供了控制最先进和当前不平衡动力学的分析表达式。该模型基于等效电路和仿射开路电压关系，描述了在完整的充电和放电周期过程中，电荷和当前不平衡的演变。使用此框架，我们确定了老化电池将在充电或放电周期结束时经历更高的电流幅度和最新电荷偏差的条件。这项工作使对电池能力和电阻的不匹配如何影响并行连接的电池系统中的不平衡动态有定量理解，从而有助于在异质电池系统中铺平一条前进的路径。
In this work, we derive analytical expressions governing state-of-charge and current imbalance dynamics for two parallel-connected batteries. The model, based on equivalent circuits and an affine open circuit voltage relation, describes the evolution of state-of-charge and current imbalance over the course of a complete charge and discharge cycle. Using this framework, we identify the conditions under which an aged battery will experience a higher current magnitude and state-of-charge deviation towards the end of a charge or discharge cycle. This work enables a quantitative understanding of how mismatches in battery capacities and resistances influence imbalance dynamics in parallel-connected battery systems, helping to pave a path forward for battery degradation modeling in heterogeneous battery systems.
