為什么手機鋰電池很少聽說爆炸,鋰電池電動車經常被爆出爆炸?
雖然說手機鋰電池和電動車鋰電池使用的都是同種族類的電池,但是其在原材料配比和生產制造工藝方面還是有所不同的,另外,手機鋰電池和電動汽車鋰電池的實際使用工況需求是不一樣方面,因此不同用途和生產制造要求也不同的電池是不能(neng)用來(lai)做比較的(de),而且電(dian)動汽車對(dui)鋰電(dian)池的(de)要求高太多了,下(xia)面列舉(ju)幾個方面簡單(dan)說明(ming)一下(xia):


1、手機鋰電池使用的基本是單顆的鋰電芯+保(bao)護(hu)電(dian)(dian)路(lu)組合而成,在容(rong)量(liang)方面較小、工藝(yi)(yi)相(xiang)對簡(jian)單,而電(dian)(dian)動(dong)汽車鋰電(dian)(dian)池(chi)是由多顆鋰電(dian)(dian)芯通過串(chuan)聯和并聯在一(yi)起(qi)組合而成的,這樣(yang)的電(dian)(dian)池(chi)組容(rong)量(liang)比較高(gao),電(dian)(dian)壓也高(gao),安全控制技術要求和生產工藝(yi)(yi)更高(gao);
2、從實(shi)際(ji)使用的(de)(de)(de)角度(du)(du)來(lai)(lai)說,手機鋰電(dian)(dian)池(chi)使用環境比較固定(ding)(ding),而且在充放(fang)電(dian)(dian)方面(mian)的(de)(de)(de)電(dian)(dian)流也(ye)比較小,電(dian)(dian)池(chi)內(nei)部原(yuan)材料化(hua)學反應就(jiu)(jiu)相對會(hui)(hui)平(ping)和些,而電(dian)(dian)動車(che)鋰電(dian)(dian)池(chi)則(ze)不同,電(dian)(dian)動車(che)屬于載(zai)人運輸工具,其工作的(de)(de)(de)時候不僅要每顆電(dian)(dian)芯通(tong)力(li)協調(diao)合作放(fang)電(dian)(dian),而且放(fang)電(dian)(dian)有(you)(you)(you)(you)大有(you)(you)(you)(you)小(開車(che)速度(du)(du)有(you)(you)(you)(you)快有(you)(you)(you)(you)慢),這樣一來(lai)(lai)電(dian)(dian)池(chi)內(nei)部化(hua)學反應就(jiu)(jiu)更加不穩定(ding)(ding),況且電(dian)(dian)動車(che)爬山涉水,稍有(you)(you)(you)(you)不值就(jiu)(jiu)會(hui)(hui)發(fa)生碰(peng)撞(zhuang),碰(peng)撞(zhuang)事故(gu)是最危險的(de)(de)(de),極易(yi)導(dao)致鋰電(dian)(dian)池(chi)外部短(duan)路(lu)引(yin)起爆(bao)燃,這個就(jiu)(jiu)讓電(dian)(dian)池(chi)組的(de)(de)(de)安(an)全(quan)系數下(xia)降(jiang)了,安(an)全(quan)可控度(du)(du)自(zi)然就(jiu)(jiu)比手機電(dian)(dian)池(chi)低。


3、從充(chong)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)角度來(lai)說,手(shou)機鋰電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)在充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)和放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)過程中都是比(bi)(bi)較穩定的(de)(de),而(er)且(qie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)還比(bi)(bi)較小(xiao),使用的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路保(bao)護(hu)板控制單一電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯的(de)(de)難道要(yao)比(bi)(bi)多顆電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯要(yao)更容易(yi),風險自然就會小(xiao)些(xie)(xie),而(er)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)車鋰電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)則不同,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)組(zu)(zu)是由多顆電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯組(zu)(zu)成(cheng)的(de)(de),而(er)且(qie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯之間還存容量差(cha)(cha)(cha)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓差(cha)(cha)(cha)、內阻(zu)差(cha)(cha)(cha)等(deng)方面的(de)(de)數據誤(wu)差(cha)(cha)(cha),這些(xie)(xie)誤(wu)差(cha)(cha)(cha)是影響(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)組(zu)(zu)安全工(gong)(gong)作(zuo)的(de)(de)因素,同時那(nei)么多電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯同時要(yao)求大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)充(chong)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)下還能(neng)協(xie)(xie)調各個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯的(de)(de)工(gong)(gong)作(zuo)效率(lv),這對于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)保(bao)護(hu)板的(de)(de)要(yao)求是比(bi)(bi)較高的(de)(de),所以多顆電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯協(xie)(xie)同工(gong)(gong)作(zuo)下,安全性能(neng)相對于單顆電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)手(shou)機電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)要(yao)差(cha)(cha)(cha)些(xie)(xie)。
4、手機鋰(li)電(dian)(dian)(dian)池(chi)(chi)使用的是軟包鋰(li)電(dian)(dian)(dian)芯(xin),而電(dian)(dian)(dian)動車鋰(li)電(dian)(dian)(dian)池(chi)(chi)使用的基本是圓(yuan)柱形鋼殼鋰(li)電(dian)(dian)(dian)芯(xin),在(zai)使用過程中,散(san)熱性能方面,手機鋰(li)電(dian)(dian)(dian)池(chi)(chi)會更好(hao)些,電(dian)(dian)(dian)池(chi)(chi)熱量(liang)控制不穩(wen),也是電(dian)(dian)(dian)池(chi)(chi)容易報廢或爆炸的原因之一。
總結起來(lai)雖然說(shuo)現在我(wo)們看到的(de)消(xiao)息是(shi)很少(shao)聽(ting)說(shuo)手(shou)機鋰電池爆炸(zha)的(de)事情,而(er)鋰電池電動車則經常被爆出(chu)爆炸(zha)的(de)消(xiao)息,但是(shi)并不(bu)能說(shuo)手(shou)機鋰電池就比電動車鋰電池安全(quan),畢竟它們在生產制造(zao)工藝上(shang)、原材(cai)料配比上(shang)和(he)使用(yong)工況等方面都是(shi)不(bu)同的(de),所以(yi)是(shi)不(bu)應拿來(lai)直接做比較(jiao)的(de)。





