退役磷酸铁锂电芯性能研究

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Abstract One of the key technologies for the hierarchical utilization of retired batteries is consistency sorting. This paper takes 15A·h decommissioned lithium iron phosphate single battery as the research object to study the internal and external nature. The research results show that the first step in the sorting of decommissioned lithium-ion batteries can be preliminary and rapid screening through visual inspection. For the calibration of the actual capacity of the decommissioned battery, the charge and discharge current I₃ is defined as 80% of the nominal capacity, and the actual capacity of the decommissioned battery is more accurate. Pulse discharge voltage is an important indicator for judging battery consistency and can be used as a characteristic indicator for rapid sorting of lithium batteries. The battery with the state of health (SOH) value above 80% and the pulse discharge voltage above 2.7V is selected as the battery with good working condition.

Key words： lithium iron phosphate retired batteries capacity test pulse discharge

Received: 30 September 2020

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	Articles by authors
	LI Cheng
	MA Linrui
	CHEN Guoli
	YANG Jianxin
	WANG Bo

Cite this article:

LI Cheng,MA Linrui,CHEN Guoli等. Study on the performance of retired lithium iron phosphate batteries[J]. Electrical Engineering, 2021, 22(6): 73-77.

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http://dqjs.cesmedia.cn/EN/Y2021/V22/I6/73

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