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充(chong)電(dian)接(jie)受(shou)率(shuai)與(yu)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)的(di)關(guan)係(ji)
根(gen)據(ju)馬(ma)斯(si)理(li)論(lun)推(tui)導(dao)出(chu)如(ru)下(xia)公(gong)式(shi)：
其(qi)中(zhong)α為(wei)任(ren)意(yi)時(shi)刻(ke)的(di)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo);i為(wei)任(ren)意(yi)時(shi)刻(ke)充(chong)電(dian)電(dian)流(liu);為(wei)待(dai)充(chong)入(ru)容(rong)量(liang).
在(zai)分(fen)段(duan)充(chong)電(dian)過(guo)程(cheng)中(zhong)，電(dian)流(liu)接(jie)受(shou)率(shuai)α呈(cheng)階(jie)段(duan)性(xing)變(bian)化(hua):
由(you)於(yu)在(zai)如(ru)圖(tu)1所(suo)示(shi)的(di)恒(heng)流(liu)一(yi)恒(heng)壓(ya)充(chong)電(dian)模(mu)式(shi)中(zhong)，to~tmid區(ou)間(jian)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)接(jie)近(jin)“理(li)想(xiang)充(chong)電(dian)”狀(zhuang)態(tai)中(zhong)的(di)充(chong)電(dian)接(jie)受(shou)率(shuai)，因(yin)此(ci)將(qiang)電(dian)流(liu)急(ji)劇(ju)衰(cui)減(jian)段(duan)的(di)。稱(chen)為(wei)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)。
由(you)此(ci)得(dei)出(chu)結(jie)論(lun)，電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)與(yu)充(chong)電(dian)接(jie)受(shou)率(shuai)的(di)關(guan)係(ji):充(chong)電(dian)接(jie)受(shou)率(shuai)大(dai)，電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)大(dai);充(chong)電(dian)接(jie)受(shou)率(shuai)小(xiao)，則(ze)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)小(xiao)。即(ji)可(ke)以(yi)用(yong)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)表(biao)征(zheng)充(chong)電(dian)接(jie)受(shou)率(shuai)。
實(shi)驗(yan)中(zhong)觀(guan)測(ce)到(dao)，tmid時(shi)刻(ke)停(ting)止(zhi)充(chong)電(dian)，穩(wen)定(ding)5h後(hou)電(dian)解(xie)液(ye)的(di)密(mi)度(duo)一(yi)般(pan)達(da)到(dao)1.25kg/m³左(zuo)右(you)，根(gen)據(ju)公(gong)式(shi):
電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)與(yu)初(chu)始(shi)充(chong)電(dian)電(dian)流(liu)的(di)關(guan)係(ji)
以(yi)上(shang)分(fen)析(xi)表(biao)明(ming)，成(cheng)品(pin)電(dian)池(chi)充(chong)電(dian)接(jie)受(shou)能(neng)力(li)強(jiang)，其(qi)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)大(dai)，因(yin)此(ci)快(kuai)速(su)充(chong)電(dian)的(di)關(guan)鍵(jian)是(shi)提(ti)高(gao)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)。由(you)式(shi)(2)分(fen)析(xi)，任(ren)意(yi)時(shi)刻(ke)的(di)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)取(qu)決(jue)於(yu)充(chong)電(dian)電(dian)流(liu)與(yu)待(dai)充(chong)入(ru)的(di)容(rong)量(liang)之(zhi)比(bi)。當(dang)初(chu)始(shi)待(dai)充(chong)入(ru)容(rong)量(liang)Cr，一(yi)定(ding)時(shi)(初(chu)始(shi)電(dian)解(xie)液(ye)密(mi)度(duo)相(xiang)同(tong))，電(dian)池(chi):越(yue)大(dai)(即(ji)充(chong)電(dian)接(jie)受(shou)能(neng)力(li)越(yue)強(jiang))，允(yun)許(xu)初(chu)始(shi)充(chong)電(dian)電(dian)流(liu)越(yue)大(dai);反(fan)之(zhi)，當(dang)電(dian)池(chi)性(xing)能(neng)變(bian)差(chai)時(shi)，充(chong)電(dian)接(jie)受(shou)能(neng)力(li)變(bian)差(chai)，電(dian)池(chi)α變(bian)小(xiao)，其(qi)允(yun)許(xu)的(di)初(chu)始(shi)充(chong)電(dian)電(dian)流(liu)越(yue)小(xiao)。對(dui)於(yu)充(chong)電(dian)接(jie)受(shou)能(neng)力(li)相(xiang)同(tong)的(di)電(dian)池(chi)，待(dai)充(chong)入(ru)容(rong)量(liang)Cr，越(yue)小(xiao)(即(ji)初(chu)始(shi)電(dian)解(xie)液(ye)密(mi)度(duo)越(yue)大(dai))，允(yun)許(xu)初(chu)始(shi)充(chong)電(dian)電(dian)流(liu)越(yue)小(xiao);反(fan)之(zhi)，允(yun)許(xu)初(chu)始(shi)充(chong)電(dian)電(dian)流(liu)越(yue)大(dai)。根(gen)據(ju)試(shi)驗(yan)結(jie)果(guo)繪(hui)製(zhi)出(chu)初(chu)始(shi)電(dian)解(xie)液(ye)密(mi)度(duo)與(yu)初(chu)始(shi)充(chong)電(dian)電(dian)流(liu)對(dui)應(ying)所(suo)得(dei)到(dao)的(di)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)，如(ru)圖(tu)4。試(shi)驗(yan)結(jie)果(guo)顯(xian)示(shi):
1) 相(xiang)同(tong)的(di)初(chu)始(shi)電(dian)解(xie)液(ye)密(mi)度(duo)(待(dai)充(chong)人(ren)容(rong)量(liang))，采(cai)用(yong)不(bu)同(tong)的(di)初(chu)始(shi)充(chong)電(dian)電(dian)流(liu)可(ke)獲(huo)得(dei)不(bu)同(tong)的(di)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)。
2) 對(dui)於(yu)相(xiang)同(tong)的(di)初(chu)始(shi)充(chong)電(dian)電(dian)流(liu)，不(bu)同(tong)的(di)初(chu)始(shi)電(dian)解(xie)液(ye)密(mi)度(duo)(待(dai)充(chong)入(ru)容(rong)量(liang))下(xia)得(dei)到(dao)的(di)電(dian)流(liu)衰(cui)減(jian)指(zhi)數(shuo)也(ye)不(bu)同(tong)。
