The invention provides a battery diagnosis apparatus, a battery pack, an electric vehicle, and a battery diagnosis method. A battery diagnostic device according to the present disclosure is provided for a battery array including first to m-th batteries (m is a natural number of 3 or more) connected in series. The battery diagnosis apparatus includes: a measurement unit configured to detect a voltage of each of first to m-th batteries; and a control unit configured to generate first to m-th voltage profile lines representing a voltage change history of each of the first to m-th batteries during charging or discharging of the battery array. The control unit diagnoses the battery array by comparing each of the first to (m-1)-th comparison voltage profile lines with a standard voltage profile line. The standard voltage section line is one of the first to m-th voltage section lines, and the first to (m-1)-th comparison voltage section lines are the remaining (m-1) voltage section lines other than the standard voltage section line.
提供了电池诊断装置、电池组、电动车辆和电池诊断方法。根据本公开的电池诊断装置被提供用于包括串联连接的第一至第m电池(m是3或更大的自然数)的电池阵列。电池诊断装置包括:测量单元,该测量单元被配置成检测第一至第m电池中的每一个的电压;以及控制单元,该控制单元被配置成在电池阵列的充电或放电期间生成表示第一至第m电池中的每一个的电压变化历史的第一至第m电压剖线。控制单元通过将第一至第(m‑1)比较电压剖线中的每一个与标准电压剖线进行比较来诊断电池阵列。标准电压剖线是第一至第m电压剖线中的一个,并且第一至第(m‑1)比较电压剖线是除标准电压剖线以外的其余(m‑1)个电压剖线。
Battery diagnostic device, battery pack, electric vehicle, and battery diagnostic method
电池诊断装置、电池组、电动车辆和电池诊断方法
2024-07-05
Patent
Electronic Resource
Chinese
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