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方(fang)(fang)(fang)形(xing)(xing)锂(li)电(dian)池(chi)(chi)(chi)通常指铝(lv)壳(qiao)或钢壳(qiao)方(fang)(fang)(fang)形(xing)(xing)电(dian)池(chi)(chi)(chi)。方(fang)(fang)(fang)形(xing)(xing)锂(li)电(dian)池(chi)(chi)(chi)在(zai)中(zhong)国(guo)(guo)的(de)普(pu)及率很高(gao)。随着近(jin)年来汽(qi)车(che)动(dong)力(li)电(dian)池(chi)(chi)(chi)的(de)兴(xing)起，汽(qi)车(che)续航里程与电(dian)池(chi)(chi)(chi)容量之间(jian)的(de)矛盾日益突出。国(guo)(guo)内动(dong)力(li)锂(li)电(dian)池(chi)(chi)(chi)厂家多采(cai)(cai)用(yong)电(dian)池(chi)(chi)(chi)能量密(mi)度较高(gao)的(de)方(fang)(fang)(fang)形(xing)(xing)铝(lv)壳(qiao)锂(li)电(dian)池(chi)(chi)(chi)，因为方(fang)(fang)(fang)形(xing)(xing)锂(li)电(dian)池(chi)(chi)(chi)的(de)结(jie)构比(bi)较简单，不(bu)像圆柱锂(li)电(dian)池(chi)(chi)(chi)采(cai)(cai)用(yong)高(gao)强度不(bu)锈(xiu)钢作为外壳(qiao)，并(bing)有防爆(bao)安全阀等配件(jian)，因此，整体配件(jian)重(zhong)量更轻，相对能量密(mi)度更高(gao)。方(fang)(fang)(fang)形(xing)(xing)锂(li)电(dian)池(chi)(chi)(chi)采(cai)(cai)用(yong)卷绕和(he)叠(die)片两种不(bu)同的(de)工(gong)艺。

然(ran)而，由于方形锂(li)电(dian)(dian)池可以(yi)根(gen)据产品(pin)的(de)(de)尺(chi)寸定制(zhi)，市场上有(you)成(cheng)千上万种型(xing)号，而且由于型(xing)号太(tai)多，工艺(yi)很难(nan)统一。在普通电(dian)(dian)子产品(pin)中使(shi)用方形电(dian)(dian)池是(shi)没有(you)问题(ti)的(de)(de)，但是(shi)对(dui)于需要多个串联(lian)和(he)并联(lian)连接的(de)(de)工业设备产品(pin)，好使(shi)用标准化的(de)(de)圆(yuan)柱锂(li)电(dian)(dian)池，这(zhei)样(yang)生产过程就有(you)了保证，以(yi)后(hou)更(geng)容易找(zhao)到可更(geng)换的(de)(de)电(dian)(dian)池。

一(yi)般来说(shuo)，方形锂(li)电(dian)(dian)(dian)(dian)池(chi)(chi)和软(ruan)包锂(li)电(dian)(dian)(dian)(dian)池(chi)(chi)各有(you)优缺(que)点(dian)。每个电(dian)(dian)(dian)(dian)池(chi)(chi)都有(you)自己的优势(shi)领(ling)域(yu)。例如，方形锂(li)电(dian)(dian)(dian)(dian)池(chi)(chi)中有(you)更多的磷酸铁(tie)锂(li)电(dian)(dian)(dian)(dian)池(chi)(chi)，而(er)软(ruan)包锂(li)电(dian)(dian)(dian)(dian)池(chi)(chi)中有(you)更多的三元(yuan)电(dian)(dian)(dian)(dian)池(chi)(chi)。随着(zhe)新能源汽(qi)车补贴新政(zheng)的出台，电(dian)(dian)(dian)(dian)池(chi)(chi)的系(xi)统(tong)能量密度(du)成(cheng)为重要的考核指(zhi)标。