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Investigating capacity degradation of LiFePO4 batteries for electric vehicles under different overcharge conditions Order a copy of this article
by Xiaogang Wu, Xu Han, Jiuyu Du
Abstract: When the state of charge (SOC) estimation by a battery management system (BMS) is inaccurate or the battery balance fails, the power battery in an electric vehicle may be overcharged, which results in a decline in the capacity and performance of the battery. In this paper, commercial large-format LiFePO4 batteries were used as overcharge targets and different overcharge paths and overcharge cut-off states of charge (SOCOC) were adopted to study the influence of different overcharge conditions on battery performance decay. The experimental results showed that different charge rates in the 0~80% SOC phase also had a certain degree of influence on the performance decay of the overcharged battery, but the SOCOC is the main reason for decline in battery performance. At the same time,

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wentao2333 求助人 Lv4 发起了本次求助