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发明授权
CN108572320B 电池最小单体及系统有效容量、健康状态估算方法及装置 有权

电池最小单体及系统有效容量、健康状态估算方法及装置
摘要：
本发明提供了电池最小单体及系统有效容量、健康状态估算方法及装置，对于健康状态估算方法，首先电池系统上电，确定在充电状态下，电池系统最小单体的初始荷电状态；然后在电池系统充满电时，确定最小单体在充电结束时刻的荷电状态，并统计最小单体的充电容量；接着计算最小单体的有效容量、电池系统的有效容量和电池系统健康状态。本发明有效解决车辆电池最小单体有效容量、电池系统有效容量和电池系统健康状态估算不准确的问题。
摘要（英）：

A method and a device for estimating a service capacity and a state of health of a minimum battery cell and a battery system is provided. The method for estimating the state of health includes: when a battery system is power-on, determining an initial state of charge of a minimum battery cell in the battery system being charged; after the battery system is fully charged, determining a state of charge of the minimum battery cell at the end of charging, and calculating to obtain a charging capacity of the minimum battery cell; and performing a computation to obtain a service capacity of the minimum battery cell, a service capacity of the battery system and a state of health of the battery system. The method can effectively solve a problem of inaccurate estimations of a service capacity of a minimum battery cell of a vehicle battery, a service capacity of a battery system and a state of health of the battery system.

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