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)。