很hen多duo用yong戶hu在zai電dian動dong車che電dian池chi的de使shi用yong過guo程cheng中zhong會hui感gan覺jiao到dao電dian瓶ping的de容rong量liang似si乎hu越yue來lai越yue少shao了le，騎qi行xing距ju離li也ye越yue來lai越yue短duan。是shi什shen麼me原yuan因yin造zao成cheng電dian動dong車che電dian池chi容rong量liang下xia降jiang呢ne?chuledianchizishendeyinsuzhiwaihaihenirichangdeshiyongxiguanhediandongchedianchigongzuohuanjingyouguanxi。xiamianxiaobianjiulaizaixiweidajiashuomingdiandongchedianchirongliangxiajiangdeyuanyin。
1、硫酸鹽化
電動車電池在使用中，出現過放電或放電後充電不及時，就會使硫酸鉛生成重結晶，重結晶後的硫酸鉛致密、粗(cu)大(da)，如(ru)果(guo)不(bu)過(guo)充(chong)電(dian)則(ze)較(jiao)難(nan)完(wan)全(quan)還(hai)原(yuan)。這(zhe)種(zhong)未(wei)完(wan)全(quan)還(hai)原(yuan)的(de)硫(liu)酸(suan)鉛(qian)結(jie)晶(jing)會(hui)使(shi)放(fang)電(dian)容(rong)量(liang)下(xia)降(jiang)，使(shi)電(dian)動(dong)車(che)電(dian)池(chi)電(dian)池(chi)更(geng)容(rong)易(yi)過(guo)放(fang)電(dian)，從(cong)而(er)產(chan)生(sheng)更(geng)多(duo)更(geng)致(zhi)密(mi)、更粗大的重結晶，如此循環就會引發電動車電池容量早衰。
2、鈍化
鈍化在正極上主要表現為，深放電後的浮充電壓過低或過充電大於120
%多(duo)次(ci)循(xun)環(huan)後(hou)會(hui)使(shi)阻(zu)擋(dang)層(ceng)的(de)厚(hou)度(du)增(zeng)加(jia)，使(shi)阻(zu)擋(dang)層(ceng)的(de)電(dian)阻(zu)增(zeng)加(jia)，最(zui)終(zhong)出(chu)現(xian)恒(heng)壓(ya)充(chong)電(dian)電(dian)流(liu)小(xiao)，恒(heng)流(liu)充(chong)電(dian)端(duan)電(dian)壓(ya)上(shang)升(sheng)快(kuai)，正(zheng)常(chang)情(qing)況(kuang)下(xia)不(bu)能(neng)完(wan)全(quan)充(chong)電(dian)。放(fang)電(dian)時(shi)端(duan)電(dian)壓(ya)下(xia)降(jiang)快(kuai)，使(shi)放(fang)電(dian)容(rong)量(liang)遠(yuan)低(di)於(yu)設(she)計(ji)容(rong)量(liang)值(zhi)，出(chu)現(xian)電(dian)池(chi)容(rong)量(liang)早(zao)衰(shuai)。
3、阻擋層的形成
dianchichangqigongzuozaishenxunhuanchongfangdianhuanjingzhong，ruguobanzhahejinyuhuoxingwuzhidejiehezuodebugouhao，meicixunhuanhuoxingwuzhidepengzhangshoudiandongchedianchisuohou，huishibanzhayuhuoxingwuzhidejiehemianzaifuchongdiandeshihouxingchengyizhongfushiceng，zhezhongfushicengsuizheshiyonghejinchengfendebutong，xingchengdekeyishidaotihuobuliangdaoti。ruguoshibuliangdaotidehua，jiuhuishidianchidechongfangdianxingnengkuaisuehua，chanshengdiandongchedianchirongliangrongliangzaoshuai。
綜上所述，電動車電池容量下降有許多的原因，我們要正確的做好預防措施，這樣才能延長電池的壽命。