The invention relates to a battery abnormality diagnosis device. A battery abnormality diagnosis device is provided with an acquisition unit for acquiring a plurality of current values and a plurality of voltage values in a predetermined period of a battery, and an abnormality diagnosis unit for diagnosing the abnormality of the battery on the basis of the variance value of the plurality of current values in the predetermined period. A calculation unit that calculates an internal resistance value of the battery on the basis of the amount of change in the charging rate of the battery, the plurality of current values, and the plurality of voltage values; and a diagnosis unit that performs an abnormality diagnosis process on the basis of the internal resistance value. The diagnosis unit performs the abnormality diagnosis process on the basis of the internal resistance value calculated when the variance value is equal to or greater than a predetermined value and the variation amount is equal to or less than a first threshold value or when the variance value is less than the predetermined value and the variation amount is equal to or less than a second threshold value.
本发明涉及一种电池异常诊断装置。电池异常诊断装置具备获取电池的预定期间内的多个电流值和多个电压值的获取部、基于所述预定期间内的所述多个电流值的方差值、所述电池的充电率的变动量及所述多个电流值和所述多个电压值来计算所述电池的内部电阻值的计算部以及基于所述内部电阻值来执行异常诊断处理的诊断部,所述诊断部基于在所述方差值是预定值以上且所述变动量是第1阈值以下的情况下或者在所述方差值低于所述预定值且所述变动量是第2阈值以下的情况下计算出的所述内部电阻值来执行所述异常诊断处理。
Battery abnormality diagnosis device
电池异常诊断装置
2025-04-25
Patent
Electronic Resource
Chinese
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