The present invention provides a battery voltage for charging even in the beginning of the charging current is relatively large and the two times more than the battery voltage protection case group battery charging method, two battery can continue charging two times the battery charging control device and charged by the charging method. In the 250ms cycle for 2 times (or 3 times) of battery voltage taken into the value of all protection than the voltage of 4.32V (voltage or 4.30V) the value of the case, detect the voltage of the battery block over voltage protection (or voltage setting) in the first case, the detection of the the charging current target is reduced to 0.1C (or lower than the target value is low). When the detected voltage of battery voltage exceeds the set, with a fixed rate reduced by the charging current of the target value is reduced, thus a exponential function gradually reduce the charging current supplying side to continue charging. When the voltage of the second battery block exceeds the protective voltage, the charging current is broken by means of a circuit breaker.
【技术实现步骤摘要】
本专利技术涉及一种基于充电电流的目标值对二次电池进行充电的二次电池的充电方法、二次电池的充电控制装置、及具备该二次电池的充电控制装置的组式电池。
技术介绍
在对以锂离子电池为代表的二次电池(以下简称电池)进行充电时,通常根据在各个电池所允许的最大电流及最大电压(用于防止过充电的保护电压)的范围内设定的设定电流及设定电压进行充电。过去,虽然提案出关于此种充电控制方法的各种各样的技术, 但以下所谓的恒定电流/恒定电压充电方式(或恒定电压/恒定电流充电方式)成为主流, 即,充电开始初期以充电电压的上限作为设定电压、以设定电流进行恒定电流充电,使电池电压上升,在充电电流低于设定电流后转移为根据设定电压的恒定电压充电。设定电压的高低左右电池的寿命(劣化的程度)、和电池实际可放电的容量即实际容量,它们相对于设定电压的高低处于相反的关系。例如,在专利文献1中公开有通过电池每次重复充放电时使设定电压下降,来一面确保充放电次数比较少时的实际容量的大小,一面延长电池的寿命的技术。另一方面,在以恒定电流/恒定电压充电方式对串联连接了多个电池的组电池进行充电的时候,由于需要考虑因重复进 ...
【技术保护点】
1.一种二次电池的充电方法,基于作为充电电流的最大设定值的目标值,以恒定电流/恒定电压对二次电池进行充电,其特征在于,按照时间序列来检测上述二次电池的电压,判定检测出的电压值是否比规定电压值大,统计判定为比规定电压值大的次数,在统计出的次数是规定次数以下的时候,降低上述目标值。
【技术特征摘要】
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