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铝壳电池与钢壳电池相比哪个好?

2022-03-23

铝壳电池与钢壳电池相比哪个好?

铝壳电池和钢(gang)壳电池在生活中很常见(jian),两者在使用(yong)上都有(you)着各自的优缺点,那么两者相比谁更好呢?

在早期(qi),方(fang)形(xing)锂(li)(li)(li)离子电(dian)(dian)池(chi)(chi)(chi)主(zhu)要由钢制成,并用于手机电(dian)(dian)池(chi)(chi)(chi),但因为(wei)其重量轻、能耗低、安全(quan)性差等特点,钢壳电(dian)(dian)池(chi)(chi)(chi)逐渐被铝壳电(dian)(dian)池(chi)(chi)(chi)和软包装锂(li)(li)(li)离子电(dian)(dian)池(chi)(chi)(chi)所取(qu)代。但对于锂(li)(li)(li)离子电(dian)(dian)池(chi)(chi)(chi)来说,情况就(jiu)不同了。

由于钢(gang)材(cai)料的物理稳定性,应力远高(gao)于铝壳(qiao)材(cai)料,每(mei)一(yi)个(ge)生产结构(gou)优化设计、安(an)全装置被放(fang)置在电(dian)池(chi)核心,钢(gang)柱电(dian)池(chi)的安(an)全性能已达到一(yi)个(ge)新(xin)的水平,大(da)多数笔记本电(dian)脑电(dian)池(chi)都(dou)采用钢(gang)壳(qiao)电(dian)池(chi)。

铝(lv)壳(qiao)(qiao)电(dian)(dian)池(chi)(chi)是一种由铝(lv)合金材料制(zhi)成的(de)锂离(li)子(zi)(zi)电(dian)(dian)池(chi)(chi),主要(yao)(yao)用于(yu)方(fang)形锂离(li)子(zi)(zi)电(dian)(dian)池(chi)(chi)。锂离(li)子(zi)(zi)电(dian)(dian)池(chi)(chi)采用铝(lv)壳(qiao)(qiao)包装,重量轻(qing),比(bi)钢(gang)壳(qiao)(qiao)更安全。铝(lv)壳(qiao)(qiao)材料结(jie)构安全性能显著,可以用材料厚度(du)和胀形系(xi)数来表示。同样容量的(de)铝(lv)壳(qiao)(qiao)电(dian)(dian)池(chi)(chi)要(yao)(yao)比(bi)钢(gang)壳(qiao)(qiao)电(dian)(dian)池(chi)(chi)更轻(qing),因为铝(lv)可以做(zuo)得更薄。

根据锂离(li)(li)(li)子(zi)(zi)电(dian)(dian)池(chi)(chi)的(de)工作机(ji)理,充电(dian)(dian)时锂离(li)(li)(li)子(zi)(zi)不(bu)嵌(qian)入,正极体积增(zeng)大。在放电(dian)(dian)过程(cheng)中,锂离(li)(li)(li)子(zi)(zi)从正极嵌(qian)入并(bing)从负极扩展。适当的(de)合金(jin)配方可以降低膨胀(zhang)系数。了解钢壳(qiao)电(dian)(dian)池(chi)(chi)和铝壳(qiao)电(dian)(dian)池(chi)(chi)的(de)优缺点,到(dao)底哪(na)种电(dian)(dian)池(chi)(chi)好(hao),这是一个没(mei)有(you)答(da)案的(de)问(wen)题,两者是没(mei)有(you)可比性的(de)。

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