锂离子电池组可用剩余容量的估算方法

Estimation of remaining capacity of lithium-ion battery

锂离子电池的可用剩余容量是电池管理系统(BMS)中一个重要参数,为精确计算电池的可用剩余容量,提出了一种新型的估算锂离子电池可用剩余容量的方法,利用开路电压法与智能估算方法相结合估测电池的SOC,得到锂离子电池SOC的实际值和估测值,经过比较,能很好的反映出电池随老化程度及其他条件的改变而发生的可用剩余容量变化。

The available residual capacity of lithium-ion is the very important parameters of the battery management system. In order to calculate the available residual capacity more accurately, a new type of residual capacity of lithium-ion was proposed, which properly combined the open circuit voltage method with intelligent forecasting methods to obtain the actual value and estimated value of SOC. By comparison, the method can better reflect the change of the available residual capacity with the aging of lithium-ion and the change of other conditions.