無論是恒(heng)流(liu)(liu)充電(dian)(dian)(dian)(dian)(dian)還(huan)是恒(heng)壓(ya)充電(dian)(dian)(dian)(dian)(dian)，如果都是一(yi)直以某一(yi)種充電(dian)(dian)(dian)(dian)(dian)方式充電(dian)(dian)(dian)(dian)(dian)，都會(hui)有安全隱患；恒(heng)流(liu)(liu)充電(dian)(dian)(dian)(dian)(dian)，到充電(dian)(dian)(dian)(dian)(dian)快(kuai)結束(shu)時(shi)，還(huan)是以固(gu)定電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)充電(dian)(dian)(dian)(dian)(dian)，充電(dian)(dian)(dian)(dian)(dian)機(ji)為維(wei)持恒(heng)流(liu)(liu)，提高電(dian)(dian)(dian)(dian)(dian)壓(ya)，有因為過充而損壞電(dian)(dian)(dian)(dian)(dian)池的(de)危(wei)(wei)險(xian)。恒(heng)壓(ya)充電(dian)(dian)(dian)(dian)(dian)在開始充電(dian)(dian)(dian)(dian)(dian)時(shi)，電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)很大，使蓄電(dian)(dian)(dian)(dian)(dian)池發熱，電(dian)(dian)(dian)(dian)(dian)液沸騰，內部化學反應急劇，有爆炸的(de)危(wei)(wei)險(xian)。電(dian)(dian)(dian)(dian)(dian)動車(che)部分火災原(yuan)因均因恒(heng)壓(ya)持續(xu)充電(dian)(dian)(dian)(dian)(dian)導致電(dian)(dian)(dian)(dian)(dian)池自燃(ran)。
