The battery diagnosis apparatus according to the present invention is used for diagnosing a battery pack including a plurality of battery cells connected in series, and includes: a voltage sensing circuit configured to periodically generate a voltage signal indicating a cell voltage of each battery cell; and a control circuit configured to generate, based on the voltage signal, time series data indicative of a change in cell voltage of each battery cell over time. The control unit is configured to: (i) determine a first average cell voltage and a second average cell voltage for each battery cell on the basis of time series data [wherein the first average cell voltage corresponds to a short-term moving average value and the second average cell voltage corresponds to a long-term moving average value]; and (ii) detecting an abnormality in the voltage of each battery cell based on a difference between the first average cell voltage and the second average cell voltage.
根据本发明的电池诊断装置用于诊断包括串联连接的多个电池单元的电池组,并且包括:电压感测电路,其被配置为周期性地生成指示每个电池单元的单元电压的电压信号;以及控制电路,其被配置为基于电压信号生成指示每个电池单元的单元电压随时间的变化的时间序列数据。所述控制单元被配置为:(i)基于时间序列数据确定每个电池单元的第一平均单元电压和第二平均单元电压,[其中第一平均单元电压对应于短期移动平均值,并且第二平均单元电压对应于长期移动平均值];以及(ii)基于第一平均单元电压和第二平均单元电压之间的差,检测每个电池单元的电压中的异常。
Battery diagnostic device, battery diagnostic method, battery pack, and vehicle
电池诊断装置、电池诊断方法、电池组及车辆
2022-12-09
Patent
Elektronische Ressource
Chinesisch
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