本发明公开了一种动力锂电池组能量均衡电路及控制方法，所述均衡电路将电池选择网络和Buck‑Boost电路结合，实现任意一节单体锂电池与锂电池组间或单体锂电池与单体锂电池间能量转移；采用霍尔传感器和采样电阻分别检测母线电流和均衡电流，得到单体锂电池的工作电流，采用扩展卡尔曼滤波算法估算单体锂电池荷电状态(State of Charge，SOC)，从而实现了基于单体锂电池SOC的电池组均衡控制。
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