2022-09-07
锂电池(chi)为(wei)什么会爆炸(zha)？
1、过充：当(dang)电(dian)压超过4.2V以(yi)上时，电(dian)解液分解，产生大量气体，电(dian)池压力升高，过充负极表(biao)面锂析(xi)出，电(dian)池爆炸。
2、高温环境：锂电池在高温环境下使用(yong)会膨胀，电解液(ye)分解。
3、保护系统(tong)故障外接电路(lu)短(duan)路(lu)：用(yong)户在使用(yong)时，外接电路(lu)短(duan)路(lu)导(dao)致电池(chi)爆(bao)炸。
4、保护电(dian)(dian)(dian)(dian)路故障或缺失。保护电(dian)(dian)(dian)(dian)路的作用是防(fang)止电(dian)(dian)(dian)(dian)池过(guo)充(chong)、过(guo)放电(dian)(dian)(dian)(dian)和电(dian)(dian)(dian)(dian)流(liu)过(guo)大对电(dian)(dian)(dian)(dian)池造成损伤。当(dang)电(dian)(dian)(dian)(dian)池过(guo)度充(chong)电(dian)(dian)(dian)(dian)时，电(dian)(dian)(dian)(dian)池内部会(hui)形成大电(dian)(dian)(dian)(dian)流(liu)和高(gao)温。严重的情况下(xia)，电(dian)(dian)(dian)(dian)池会(hui)泄漏，气体会(hui)在电(dian)(dian)(dian)(dian)池内部形成和积聚，导致电(dian)(dian)(dian)(dian)池爆炸或燃烧。
5、来自(zi)制造业(ye)(ye)的风险。目前，市场上销(xiao)售的各种(zhong)民(min)用(yong)(yong)家用(yong)(yong)电(dian)器用(yong)(yong)锂电(dian)池(chi)(chi)质(zhi)量参差不齐。生产企(qi)业(ye)(ye)应(ying)通(tong)过(guo)权(quan)威(wei)第(di)三方认证(zheng)机构颁发(fa)的锂电(dian)池(chi)(chi)安全认证(zheng)，使其安全得到可靠保证(zheng)。这种(zhong)锂离(li)子电(dian)池(chi)(chi)通(tong)过(guo)了安全认证(zheng)，通(tong)常只在极端环(huan)境(jing)条件下爆炸(zha)或燃烧(shao)。例(li)如，根据《锂离(li)子电(dian)池(chi)(chi)通(tong)用(yong)(yong)规范(fan)》(QB/T2502-2000)，锂离(li)子电(dian)池(chi)(chi)按标准完(wan)全充电(dian)，中(zhong)央与电(dian)极面垂直方向(xiang)被穿透(tou)，放置6小时以上，不爆炸(zha)、不燃烧(shao)。
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随(sui)着科技的进(jin)步，电(dian)(dian)(dian)子设备的使(shi)用，使(shi)得聚(ju)(ju)(ju)合(he)物锂电(dian)(dian)(dian)池(chi)的安(an)全(quan)性要(yao)求更高。那么我(wo)们(men)如何提高聚(ju)(ju)(ju)合(he)物锂电(dian)(dian)(dian)池(chi)的安(an)全(quan)性呢(ni)？1、安(an)全(quan)阀(fa)的开启(qi)压(ya)力和灵敏度是影响锂电(dian)(dian)(dian)池(chi)安(an)全(quan)的重要(yao)因素，可以在(zai)一定程度上降低爆炸伤(shang)害。2、在(zai)电(dian)(dian)(dian)解液(ye)中加入聚(ju)(ju)(ju)合(he)物单体分(fen)子，当充电(dian)(dian)(dian)电(dian)(dian)(dian)压(ya)超过极限时，电(dian)(dian)(dian)
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