磷酸铁锂电池组均衡控制策略及荷电状态估计算法

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Abstract Due to the different temperature gradients and coulomb efficiencies, the remaining capacity between cells will be inconsistencies, which results in the decrease of the capacity of battery pack. In order to improve the performance of battery pack, an equalization control strategy, which is based on t-SOC decision and k-SOC control, is proposed. Moreover, SOC algorithm of battery pack at balanced/unbalanced state is proposed. Finally, the accuracy of SOC estimation has been verified at balanced/unbalanced state. The results indicate that our method can provide effective equalization.

Key words： Equalization control strategy SOC estimation battery pack LiFePO4

Received: 07 March 2014 Published: 23 March 2015

PACS:

TM912.6

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	Articles by authors
	Feng Fei
	Song Kai
	Lu Rengui
	Wei Guo
	Zhu Chunbo

Cite this article:

Feng Fei,Song Kai,Lu Rengui等. Equalization Control Strategy and SOC Estimation for LiFePO₄ Battery Pack[J]. Transactions of China Electrotechnical Society, 2015, 30(1): 22-29.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I1/22

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