2022-04-13
一、聚合物软包锂(li)电池的储存(cun)
当(dang)聚合(he)物软包锂电(dian)(dian)(dian)(dian)池(chi)(chi)存储时间(jian)超过一周时,电(dian)(dian)(dian)(dian)池(chi)(chi)电(dian)(dian)(dian)(dian)量(liang)应为50%左右(you)的(de)充(chong)电(dian)(dian)(dian)(dian)容(rong)量(liang)。电(dian)(dian)(dian)(dian)池(chi)(chi)完全充(chong)满(man)有可(ke)能(neng)会影(ying)响其容(rong)量(liang)损耗。将(jiang)电(dian)(dian)(dian)(dian)池(chi)(chi)放(fang)置(zhi)于(yu)室温环境(jing)下,两到三年(nian)后将(jiang)失去约20%的(de)容(rong)量(liang)。将(jiang)相同的(de)电(dian)(dian)(dian)(dian)池(chi)(chi)以(yi)佳存储电(dian)(dian)(dian)(dian)压储存并放(fang)入冰(bing)箱,大约需要10年(nian)才能(neng)失去20%的(de)容(rong)量(liang)。
二、聚合物软包锂电池的安(an)全充电
电(dian)(dian)(dian)(dian)池发生(sheng)着火(huo),大多(duo)数(shu)是在(zai)充(chong)电(dian)(dian)(dian)(dian)过程中或碰撞引起的。在(zai)无人看管(guan)的情况下,不要(yao)给(ji)电(dian)(dian)(dian)(dian)池充(chong)电(dian)(dian)(dian)(dian),在(zai)远离易燃材料(liao)的隔离区域充(chong)电(dian)(dian)(dian)(dian),而(er)且充(chong)电(dian)(dian)(dian)(dian)环境要(yao)有利于电(dian)(dian)(dian)(dian)池的散热,否则有可能导(dao)致电(dian)(dian)(dian)(dian)池温度(du)过高发生(sheng)爆炸。
聚合物(wu)软包锂(li)电(dian)池的进步使得(de)从超小型设备(bei)到为巨型设备(bei)提供动(dong)力(li)成为可能。对电(dian)池和充电(dian)器的基(ji)本(ben)了解将有助于确保聚合物(wu)软包锂(li)电(dian)池技术的安全使用。
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回顾电池(chi)的(de)发(fa)(fa)展(zhan)历史从(cong)铅酸、镍铬、镍氢(qing)、三元锂电池(chi)日本从(cong)来都是全球(qiu)(qiu)技术的(de)领导(dao)者。作为高(gao)端电池(chi)的(de)代名词。不仅(jin)仅(jin)赢得了全球(qiu)(qiu)电池(chi)市(shi)场(chang)高(gao)端份(fen)额(e),且获得巨大的(de)经济利益。然而(er)在近几年电池(chi)发(fa)(fa)展(zhan)趋势里日本却出现颓势。仿佛停止(zhi)不前(qian)。山木(mu)新能源(yuan)分析到由于日本前(qian)期在电池(chi)
铅酸电(dian)池(chi)的(de)组成:极(ji)(ji)板(ban)(ban)、隔(ge)板(ban)(ban)、外壳、电(dian)解质(zhi)、铅连接条(tiao)、磁极(ji)(ji)等。1、正极(ji)(ji)板(ban)(ban)和负极(ji)(ji)板(ban)(ban)分类和组成:极(ji)(ji)板(ban)(ban)分为正极(ji)(ji)板(ban)(ban)和负极(ji)(ji)板(ban)(ban),由网格和填充在其上的(de)活(huo)性(xing)物质(zhi)组成。作用:蓄电(dian)池(chi)在充放(fang)电(dian)过(guo)程(cheng)中(zhong),电(dian)能(neng)与化学能(neng)的(de)相(xiang)互转(zhuan)换是通过(guo)电(dian)极(ji)(ji)板(ban)(ban)上的(de)活(huo)性(xing)物质(zhi)与电(dian)解液中(zhong)的(de)硫酸的(de)化学反(fan)应来
锂(li)电(dian)(dian)池负(fu)极的(de)(de)碳材(cai)料在(zai)电(dian)(dian)池次(ci)充放(fang)电(dian)(dian)时不可避免地(di)会与电(dian)(dian)解质发生反应。这(zhei)一过程(cheng)对锂(li)电(dian)(dian)池的(de)(de)影(ying)响:1、如果碳负(fu)极的(de)(de)结(jie)构被破(po)(po)坏,反应将导致(zhi)碳材(cai)料结(jie)构的(de)(de)变化(hua)2、保护碳材(cai)料表面(mian)(mian),即在(zai)碳负(fu)极表面(mian)(mian)(固(gu)体界面(mian)(mian))形成钝化(hua)膜或(huo)SEI膜电(dian)(dian)解液对负(fu)碳的(de)(de)三(san)种(zhong)不同(tong)反应还(hai)原反应的(de)(de)破(po)(po)
锂(li)离(li)(li)子电(dian)(dian)池(chi)介绍:锂(li)离(li)(li)子电(dian)(dian)池(chi)是可充电(dian)(dian)电(dian)(dian)池(chi)的(de)一种,主要依靠锂(li)离(li)(li)子在正极(ji)和负(fu)极(ji)之(zhi)间移动来工作。传统上,锂(li)离(li)(li)子进入阴极(ji)材(cai)料的(de)过(guo)(guo)程(cheng)称为(wei)嵌入,离(li)(li)开的(de)过(guo)(guo)程(cheng)称为(wei)脱嵌。锂(li)离(li)(li)子进入负(fu)极(ji)材(cai)料的(de)过(guo)(guo)程(cheng)称为(wei)插入,离(li)(li)开的(de)过(guo)(guo)程(cheng)称为(wei)脱插。像所有化学电(dian)(dian)池(chi)一样,锂(li)离(li)(li)子电(dian)(dian)池(chi)由3部分组成:
挂卡(ka)锂(li)(li)电(dian)池(chi)通常是(shi)指采用(yong)镍(nie)钴锰(meng)酸(suan)(suan)锂(li)(li)或(huo)镍(nie)钴铝酸(suan)(suan)锂(li)(li)作为正极材料的锂(li)(li)电(dian)池(chi),一般使(shi)用(yong)镍(nie)盐(yan)、锰(meng)盐(yan)等作为正极材料的原料,其中镍(nie)钴锰(meng)的比例(li)可(ke)以根(gen)据(ju)实际(ji)需要(yao)来调整,这种材料做的挂卡(ka)锂(li)(li)电(dian)池(chi)相(xiang)对于钴酸(suan)(suan)锂(li)(li)电(dian)池(chi)的安(an)全(quan)性高(gao)。1999年Liu等首次(ci)报(bao)道了层状镍(nie)钻锰(meng)三元过渡金(jin)属复(fu)合(he)
锂(li)离子(zi)电(dian)(dian)(dian)池(chi)(chi)(chi)的(de)电(dian)(dian)(dian)解(jie)质(zhi)与其它电(dian)(dian)(dian)池(chi)(chi)(chi)的(de)有所不(bu)同(tong),一般而言(yan)电(dian)(dian)(dian)解(jie)质(zhi)是稳(wen)定(ding)的(de),但锂(li)离子(zi)电(dian)(dian)(dian)池(chi)(chi)(chi)是特殊的(de)。在阳极上形(xing)成钝化膜称为固体电(dian)(dian)(dian)解(jie)质(zhi)界(jie)面(SEI),其主要目的(de)是将(jiang)阴阳两极隔开,但离子(zi)仍能通过(guo)。薄(bo)膜不(bu)仅能让电(dian)(dian)(dian)池(chi)(chi)(chi)系统稳(wen)定(ding),而且还能延长(zhang)锂(li)离子(zi)电(dian)(dian)(dian)池(chi)(chi)(chi)的(de)使用寿(shou)命(ming),但会(hui)对(dui)电(dian)(dian)(dian)池(chi)(chi)(chi)的(de)