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用鉛酸充電器給鋰電瓶充電的影響

 

 

  有點危險,一般不建議這樣用,雖然沒有脈沖功能的充電器,理(li)論(lun)是可以給鋰(li)電(dian)(dian)池(chi)充電(dian)(dian)的(de)(de)(de),但是依然(ran)可能(neng)(neng)會傷害鋰(li)電(dian)(dian)池(chi),雖然(ran)鋰(li)電(dian)(dian)池(chi)有保(bao)護板,理(li)論(lun)過充或者過放時候能(neng)(neng)起到保(bao)護作用,如果(guo)充電(dian)(dian)時經常觸發過充保(bao)護電(dian)(dian)壓,那這(zhe)個充電(dian)(dian)器的(de)(de)(de)輸出電(dian)(dian)壓設置就不正確。發生這(zhe)樣的(de)(de)(de)現(xian)象后(hou),那落(luo)后(hou)的(de)(de)(de)電(dian)(dian)池(chi)永(yong)遠(yuan)落(luo)后(hou)。有保(bao)護板也盡量不要(yao)高。因為電(dian)(dian)池(chi)在電(dian)(dian)池(chi)盒里使用,平時是看不到電(dian)(dian)池(chi)的(de)(de)(de)一致(zhi)性狀態的(de)(de)(de),不知什么時候,萬一它的(de)(de)(de)一致(zhi)性出問(wen)題了(le),這(zhe)時電(dian)(dian)壓又高了(le)幾V。那電(dian)(dian)池(chi)就要(yao)倒大霉了(le),請(qing)關注:容濟點火器

 

實際上,鉛酸電池充電器為了(le)(le)克服鉛酸的(de)大內阻(zu),在恒(heng)流(liu)充電(dian)(dian)(dian)(dian)時(shi)(shi)把充電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)壓(ya)(ya)提(ti)高了(le)(le)5%左右(you),也就(jiu)是(shi)說就(jiu)是(shi)你選用了(le)(le)一樣電(dian)(dian)(dian)(dian)壓(ya)(ya)充電(dian)(dian)(dian)(dian)器,給(gei)鋰電(dian)(dian)(dian)(dian)池供電(dian)(dian)(dian)(dian)時(shi)(shi)候,電(dian)(dian)(dian)(dian)壓(ya)(ya)會高出來(lai)一點的(de),因(yin)為鉛酸的(de)內阻(zu)大,恒(heng)流(liu)充電(dian)(dian)(dian)(dian)為了(le)(le)達到(dao)效率都是(shi)在恒(heng)流(liu)時(shi)(shi)把恒(heng)壓(ya)(ya)電(dian)(dian)(dian)(dian)壓(ya)(ya)升(sheng)高,這樣對鋰電(dian)(dian)(dian)(dian)池是(shi)很不利(li)的(de)。

 

主要(yao)是(shi)鉛酸電池充電過程中有二個電壓(ya)點會析(xi)氫和析(xi)氧(yang),析(xi)氧(yang)電壓(ya)點為13.8V,析(xi)氫電壓(ya)點為14.7V,所(suo)以(yi)鉛酸充電器的高恒(heng)壓(ya)定在14.7V*塊數(shu);低恒(heng)壓(ya)(浮(fu)充電壓(ya))定在13.8V*塊數(shu)。


鋰(li)電(dian)(dian)(dian)池(chi)保護(hu)板的(de)保護(hu)電(dian)(dian)(dian)壓點(dian)如(ru)果是4.2V,那(nei)放心使用(yong),無非(fei)就不要恒壓而已充電(dian)(dian)(dian),但普通的(de)保護(hu)板啟動(dong)電(dian)(dian)(dian)壓時4.25V,加上+/-0.035V的(de)誤差,不是很安全吧? 18650可(ke)能沒多(duo)大事(shi),鋁殼大單體難說了,很多(duo)鋰(li)電(dian)(dian)(dian)池(chi)使用(yong)的(de)是正常普通的(de)保護(hu)板,保護(hu)板截止保護(hu)電(dian)(dian)(dian)壓4.25V ,所以這個保護(hu)在關鍵時候(hou)可(ke)能會(hui)起不到作用(yong)。

 

鋰(li)電(dian)池內阻(zu)小,比(bi)如13串鋰(li)電(dian)池也就(jiu)是(shi)48伏,截止電(dian)壓要控制在54.6伏因(yin)為,而鉛酸電(dian)池恒(heng)流截止電(dian)壓是(shi)57.9伏,高出幾伏了(le)。

 

當然,鉛酸電池如果改進一下是可以給鋰電池充電的,比如去掉低恒壓階段電路和脈沖電路,是可以用的。如果你如果觀察鋰電的充電曲線,可以發現在恒流階段充入約為96%的總容量;恒壓減流階段只充入4%的容量,如果轉燈就拔時,那鋰電已經充入了99.5%的容量了。所以鉛酸充電器充鋰電,也就(jiu)是少(shao)了最后的(de)均衡(heng)和浮充(chong)(chong)那0.5%的(de)電量而已。將鉛充(chong)(chong)的(de)高低恒壓都低調點,就(jiu)都可以(yi)給鋰電充(chong)(chong)電了,只不(bu)(bu)過充(chong)(chong)不(bu)(bu)滿(man)而已。不(bu)(bu)過鋰電又不(bu)(bu)會硫化(hua),充(chong)(chong)不(bu)(bu)滿(man)就(jiu)充(chong)(chong)不(bu)(bu)滿(man)吧,又不(bu)(bu)影響使用,壽命還(huan)會延長(chang)呀。

 

還有一個方法,打開外殼,把三(san)極(ji)(ji)管C極(ji)(ji)串聯那(nei)個電阻(zu)阻(zu)值(zhi)提(ti)升10倍(bei),恒(heng)流只(zhi)提(ti)升0.5%電壓(ya)(ya),再調節下恒(heng)壓(ya)(ya)點,盡量(liang)做到每一個電池電壓(ya)(ya)均(jun)衡到4.18V左(zuo)右為好(hao)。

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