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软(ruan)包锂(li)电(dian)(dian)池是一(yi)种(zhong)覆盖有一(yi)层(ceng)(ceng)聚合物外(wai)壳的液体(ti)锂(li)离子(zi)电(dian)(dian)池。与其他电(dian)(dian)池大的区别在(zai)于软(ruan)包装材料 (铝(lv)塑复合膜)，这也(ye)是软(ruan)包锂(li)电(dian)(dian)池中关键(jian)和技术(shu)上困难的材料。软(ruan)包装材料通常分为三(san)层(ceng)(ceng)，即外(wai)阻层(ceng)(ceng) (一(yi)般(ban)为尼(ni)龙BOPA或PET外(wai)保护层(ceng)(ceng)) 、阻隔(ge)(ge)层(ceng)(ceng) (中间(jian)层(ceng)(ceng)铝(lv)箔) 和内层(ceng)(ceng) (多功能高(gao)阻隔(ge)(ge)层(ceng)(ceng))。
软包锂电(dian)池的包装材(cai)料(liao)和结构赋予其(qi)一(yi)系(xi)列(lie)优点(dian)：
1、安全性能好
软包锂电(dian)池(chi)的(de)结构采用铝塑(su)膜封装(zhuang)。在(zai)存在(zai)安全隐患的(de)情(qing)况下，软包电(dian)池(chi)多(duo)只会炸裂，而不会像钢壳(qiao)铝壳(qiao)电(dian)池(chi)那样爆炸。
2、重量轻
软包锂电池(chi)的(de)重量(liang)比同等(deng)容量(liang)的(de)钢(gang)壳锂电池(chi)轻(qing)40%，比铝壳电池(chi)轻(qing)20%。
3、大容量
软包锂电(dian)池的(de)(de)容(rong)量比相同尺寸的(de)(de)钢壳电(dian)池高10〜15%，比铝(lv)壳电(dian)池高5〜10%。
4、内阻小
软(ruan)包(bao)锂电(dian)池的(de)(de)内阻相对较小(xiao)。目前，国产软(ruan)包(bao)电(dian)池芯的(de)(de)内阻可(ke)低至35mQ，大大降低了(le)电(dian)池的(de)(de)自(zi)耗。
5、灵活设计
软包电(dian)(dian)池(chi)的形状可(ke)(ke)以根据客户(hu)的需(xu)求(qiu)(qiu)进行定制，开发(fa)新的电(dian)(dian)池(chi)单体型号，特(te)别是在形状上，可(ke)(ke)以定制各种不规则形状的电(dian)(dian)池(chi)，可(ke)(ke)以很好地满(man)足当前智(zhi)能可(ke)(ke)穿(chuan)戴(dai)电(dian)(dian)子设备的需(xu)求(qiu)(qiu)。
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