在鋰電池族類中，要說在同等應用工況下的話，最安全的應該是磷酸鐵鋰電池了，磷酸(suan)鐵鋰(li)的正極材(cai)料不容易分解，析氧不嚴重，不太容易在(zai)短時間內(nei)產生大量(liang)的內(nei)部燃燒(shao)壓力(li)，也(ye)就不容易炸。最多就是(shi)緩慢(man)的開始逐步(bu)燃燒(shao)。

一(yi)般情況下(xia)，磷酸鐵鋰(li)電池是(shi)不(bu)會爆(bao)炸(zha)的。再(zai)極(ji)端一(yi)點，電芯一(yi)般會有安全閥（圓柱/鋁(lv)殼都有）泄(xie)(xie)壓，軟包更(geng)(geng)容(rong)易泄(xie)(xie)氣泄(xie)(xie)壓，就更(geng)(geng)炸(zha)不(bu)起來了(le)。所以磷酸鐵鋰(li)電池在(zai)極(ji)端情況下(xia)的爆(bao)炸(zha)，這個(ge)小(xiao)概率事件(jian)是(shi)很小(xiao)的，中獎(jiang)概率比(bi)中福彩體彩特等(deng)獎(jiang)還(huan)小(xiao)…

當然還是會有(you)萬一的(de)情況發生(sheng)的(de)，比如說事故(gu)中的(de)猛烈撞擊，這個就有(you)可能會引發自燃爆炸，當然與(yu)其它類(lei)型的(de)鋰(li)電池(chi)比起來，會相(xiang)對“溫柔些”，所以你需要一個阻(zu)(zu)燃的(de)外殼(ke)（鐵箱或者鋁殼(ke)或者阻(zu)(zu)燃膠殼(ke)），需要一個性(xing)能靠譜的(de)保(bao)護板，內部線束/填充(chong)物(wu)固(gu)定輔(fu)料(liao)使用阻(zu)(zu)燃材料(liao)。

使用靠譜的專用充電器，因為我們使用的磷酸鐵鋰電池一般不只是單顆電芯的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)，而是(shi)由多顆(ke)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯通過(guo)串(chuan)聯和并(bing)聯之后，通過(guo)線材(cai)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)保(bao)護板的(de)(de)(de)相(xiang)互配合，才能(neng)(neng)做出符合實際應用(yong)需求(qiu)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)組(zu)，就是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)大(da)(da)小(xiao)(xiao)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)容量大(da)(da)小(xiao)(xiao)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)組(zu)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)大(da)(da)小(xiao)(xiao)等這些能(neng)(neng)符合應用(yong)需求(qiu)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)需要保(bao)證在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)時候(hou)可(ke)以檢測并(bing)控(kong)制充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流，達到均(jun)衡電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)組(zu)中電(dian)(dian)(dian)(dian)(dian)(dian)(dian)芯之間(jian)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)、容量大(da)(da)小(xiao)(xiao)的(de)(de)(de)誤(wu)差和控(kong)制溫(wen)度，可(ke)以保(bao)障充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)安全。

不過通過45度或者60度的循環測試來鑒別，磷酸鐵鋰電池高溫下的循環壽命基本上和安全性成正比（高溫下壽命夠長的電池，往往他的用料和設計(ji)也能(neng)帶來安(an)全性(xing)的提(ti)升。）

當然磷(lin)酸鐵(tie)鋰電池(chi)電芯(xin)質量有(you)好(hao)有(you)壞(huai)，組(zu)成(cheng)的(de)(de)電池(chi)組(zu)自然也會有(you)好(hao)有(you)壞(huai)，好(hao)的(de)(de)和差的(de)(de)在這(zhe)個指(zhi)標上可能差好(hao)幾倍(bei)。

你看到的鋰電(dian)池自然甚至(zhi)爆照的新(xin)聞(wen)，多數是(shi)(shi)來自鈷(gu)(gu)酸鋰或(huo)者(zhe)基(ji)于鈷(gu)(gu)酸鋰的三元材料，那個是(shi)(shi)為了追(zhui)求(qiu)更高能量密度而付出的代價。