The invention discloses a lithium battery state evaluation method based on alternating current impedance and online operation data, and relates to the technical field of battery state evaluation. The method specifically comprises the steps of performing alternating-current impedance testing on a lithium battery to obtain alternating-current impedance characteristics of the lithium battery; analyzing the obtained AC impedance characteristics of the lithium battery, and extracting related characteristic parameters; collecting and analyzing actual operation data of the lithium battery, and establishing a working state model of the lithium battery; establishing a lithium battery state evaluation model based on the lithium battery alternating current impedance characteristic and the lithium battery actual operation data; and performing lithium battery state evaluation according to the established lithium battery state evaluation model. According to the scheme, the state of the lithium battery is evaluated more accurately by combining the alternating current impedance data and the online operation data of the lithium battery, the evaluation precision and real-time performance are improved, problems existing in the lithium battery are found in time, and corresponding measures are taken.
本发明公开了基于交流阻抗与在线运行数据的锂电池状态评估方法,涉及电池状态评估技术领域。具体包括:对锂电池进行交流阻抗测试,获取锂电池交流阻抗特性;对获取的锂电池交流阻抗特性进行分析,提取相关特征参数;收集并分析锂电池实际运行数据,建立锂电池工作状态模型;基于锂电池交流阻抗特性与锂电池实际运行数据,建立锂电池状态评估模型;根据建立的锂电池状态评估模型,进行锂电池状态评估。本方案利用锂电池交流阻抗数据与在线运行数据相结合的方法,更准确地评估锂电池的状态,提高评估的精度与实时性,及时发现锂电池存在的问题并采取相应措施。
Lithium battery state evaluation method based on alternating current impedance and online operation data
基于交流阻抗与在线运行数据的锂电池状态评估方法
2024-11-29
Patent
Electronic Resource
Chinese
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