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目前(qian)，聚合物锂离子电(dian)(dian)(dian)(dian)(dian)池(chi)主要采用(yong)限压(ya)限流的充电(dian)(dian)(dian)(dian)(dian)方式。恒流(CC)充电(dian)(dian)(dian)(dian)(dian)初期，电(dian)(dian)(dian)(dian)(dian)池(chi)接受能力强(qiang)(qiang)。随着充电(dian)(dian)(dian)(dian)(dian)过程(cheng)的不断进行，极化效(xiao)应增(zeng)强(qiang)(qiang)，温(wen)升(sheng)加剧，电(dian)(dian)(dian)(dian)(dian)压(ya)升(sheng)高(gao)。在(zai)恒压(ya)阶段有(you)涓流充电(dian)(dian)(dian)(dian)(dian)，大约用(yong)30%的时间充10%的电(dian)(dian)(dian)(dian)(dian)，电(dian)(dian)(dian)(dian)(dian)流强(qiang)(qiang)度(du)减小，温(wen)升(sheng)不增(zeng)加。

在(zai)(zai)此过程中(zhong)，考虑聚合物(wu)锂离(li)子电(dian)(dian)池(chi)的(de)(de)总电(dian)(dian)压(ya)(ya)或(huo)平(ping)均电(dian)(dian)压(ya)(ya)。事实(shi)上(shang)，单体电(dian)(dian)池(chi)的(de)(de)电(dian)(dian)压(ya)(ya)一(yi)直较高，相(xiang)对(dui)(dui)于组内其(qi)他电(dian)(dian)池(chi)已经进入充电(dian)(dian)阶段。同样，在(zai)(zai)放(fang)电(dian)(dian)时(shi)，电(dian)(dian)池(chi)中(zhong)也有一(yi)组放(fang)电(dian)(dian)，过充和过放(fang)电(dian)(dian)对(dui)(dui)电(dian)(dian)池(chi)的(de)(de)损伤是致命的(de)(de)，区别只是过充产(chan)生(sheng)大量气体，容易自燃爆炸；过放(fang)外(wai)观变化缓慢，但(dan)故障率非常快，在(zai)(zai)正常使(shi)用时(shi)应(ying)严格(ge)避免。

为此，提出了一种(zhong)新的锂电(dian)(dian)(dian)(dian)池(chi)充(chong)电(dian)(dian)(dian)(dian)方法(fa)——并联控制与(yu)平(ping)衡(heng)管理(li)，该方法(fa)可以对每(mei)个电(dian)(dian)(dian)(dian)池(chi)芯分别进行充(chong)放(fang)电(dian)(dian)(dian)(dian)管理(li)和(he)平(ping)衡(heng)控制。这种(zhong)动态平(ping)衡(heng)集放(fang)电(dian)(dian)(dian)(dian)平(ping)衡(heng)和(he)充(chong)电(dian)(dian)(dian)(dian)平(ping)衡(heng)的优点于一体。虽(sui)然(ran)单体电(dian)(dian)(dian)(dian)池(chi)在初始容量、电(dian)(dian)(dian)(dian)压(ya)、内阻等方面存在差异，但在工作中能够(gou)保(bao)证(zheng)相对充(chong)放(fang)电(dian)(dian)(dian)(dian)强度(du)和(he)深(shen)度(du)的一致性(xing)，并逐渐达到(dao)共同(tong)的寿命(ming)终(zhong)点。这种(zhong)方法(fa)特别适用于大电(dian)(dian)(dian)(dian)流放(fang)电(dian)(dian)(dian)(dian)。