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鋰離子動力電池待解決的使用技術問題

   鋰(li)離子動(dong)(dong)(dong)(dong)(dong)(dong)力電(dian)(dian)池做為一種(zhong)新型的動(dong)(dong)(dong)(dong)(dong)(dong)力技術,可(ke)(ke)以使(shi)用(yong)在任何一種(zhong)驅動(dong)(dong)(dong)(dong)(dong)(dong)車輛上,如電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)自行車、電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)摩托(tuo)車、電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)小轎車、電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)中巴和(he)大巴,以及UPS、移動(dong)(dong)(dong)(dong)(dong)(dong)激光電(dian)(dian)源、移動(dong)(dong)(dong)(dong)(dong)(dong)照明電(dian)(dian)源、移動(dong)(dong)(dong)(dong)(dong)(dong)通訊設備、軍事領域(yu)、航空航天領域(yu),其使(shi)用(yong)面之廣,具有不可(ke)(ke)估(gu)量的市場前景。然而(er),基于鋰(li)離子動(dong)(dong)(dong)(dong)(dong)(dong)力電(dian)(dian)池的特(te)性,即充電(dian)(dian)電(dian)(dian)壓(ya)(ya)不可(ke)(ke)超過4.2V,放電(dian)(dian)電(dian)(dian)壓(ya)(ya)不可(ke)(ke)低(di)于2.6V。使(shi)用(yong)鋰(li)動(dong)(dong)(dong)(dong)(dong)(dong)力電(dian)(dian)池的技術問題,已是迫(po)在眉睫(jie),而(er)且是必須盡快解(jie)決(jue)的問題。

  鋰(li)(li)(li)動(dong)(dong)(dong)(dong)(dong)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)產(chan)生(sheng)(sheng)(sheng),無疑對(dui)傳統的(de)(de)(de)(de)(de)(de)(de)(de)(de)驅動(dong)(dong)(dong)(dong)(dong)技(ji)(ji)術(shu)帶來危機。而(er)(er)(er)鋰(li)(li)(li)動(dong)(dong)(dong)(dong)(dong)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)特性,又決定了必(bi)(bi)須有(you)高超的(de)(de)(de)(de)(de)(de)(de)(de)(de)使(shi)(shi)(shi)(shi)用(yong)技(ji)(ji)術(shu)。才(cai)能盡快進(jin)(jin)入(ru)使(shi)(shi)(shi)(shi)用(yong)市場(chang)。從(cong)目前的(de)(de)(de)(de)(de)(de)(de)(de)(de)鋰(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)生(sheng)(sheng)(sheng)產(chan)制(zhi)造技(ji)(ji)術(shu)看,已經達(da)到(dao)(dao)了完美的(de)(de)(de)(de)(de)(de)(de)(de)(de)程(cheng)度,10Ah電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)內(nei)阻達(da)到(dao)(dao)10mΩ左右(you),而(er)(er)(er)50Ah,100Ah的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)內(nei)阻只(zhi)(zhi)(zhi)有(you)1mΩ左右(you),這(zhe)使(shi)(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)專家(jia)都(dou)感到(dao)(dao)驚訝。然(ran)(ran)而(er)(er)(er),鋰(li)(li)(li)動(dong)(dong)(dong)(dong)(dong)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)突然(ran)(ran)出現(xian),也讓使(shi)(shi)(shi)(shi)用(yong)市場(chang)感到(dao)(dao)突然(ran)(ran)。當一(yi)(yi)(yi)(yi)個(ge)個(ge)用(yong)戶(hu)對(dui)高新科技(ji)(ji)產(chan)生(sheng)(sheng)(sheng)興(xing)趣,并興(xing)致勃勃地試(shi)用(yong)時(shi)(shi),問(wen)題(ti)(ti)出現(xian)了:鋰(li)(li)(li)動(dong)(dong)(dong)(dong)(dong)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)在使(shi)(shi)(shi)(shi)用(yong)中(zhong)做為動(dong)(dong)(dong)(dong)(dong)力(li)(li),必(bi)(bi)須要(yao)(yao)串聯才(cai)能達(da)到(dao)(dao)使(shi)(shi)(shi)(shi)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)需要(yao)(yao),而(er)(er)(er)幾(ji)個(ge)幾(ji)十(shi)個(ge)甚至(zhi)幾(ji)百個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)串聯,使(shi)(shi)(shi)(shi)用(yong)一(yi)(yi)(yi)(yi)段時(shi)(shi)間(jian)后(hou),必(bi)(bi)然(ran)(ran)會(hui)(hui)產(chan)生(sheng)(sheng)(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)(de)參差(cha)不齊,這(zhe)并不是電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)生(sheng)(sheng)(sheng)產(chan)技(ji)(ji)術(shu)問(wen)題(ti)(ti),由于(yu)(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)在生(sheng)(sheng)(sheng)產(chan)過(guo)(guo)(guo)(guo)程(cheng)中(zhong),從(cong)涂膜開始到(dao)(dao)成(cheng)為成(cheng)品要(yao)(yao)經過(guo)(guo)(guo)(guo)很(hen)(hen)多(duo)道工序(xu)。即使(shi)(shi)(shi)(shi)經過(guo)(guo)(guo)(guo)嚴格的(de)(de)(de)(de)(de)(de)(de)(de)(de)檢測(ce)程(cheng)序(xu),使(shi)(shi)(shi)(shi)每組(zu)電(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)、電(dian)(dian)(dian)(dian)(dian)(dian)阻、容量一(yi)(yi)(yi)(yi)致,但使(shi)(shi)(shi)(shi)用(yong)一(yi)(yi)(yi)(yi)段時(shi)(shi)間(jian),也會(hui)(hui)產(chan)生(sheng)(sheng)(sheng)這(zhe)樣或(huo)那(nei)樣的(de)(de)(de)(de)(de)(de)(de)(de)(de)差(cha)異。如(ru)同一(yi)(yi)(yi)(yi)位母親生(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)雙胞胎,剛生(sheng)(sheng)(sheng)下時(shi)(shi)可能長(chang)得一(yi)(yi)(yi)(yi)模(mo)一(yi)(yi)(yi)(yi)樣,做為母親都(dou)很(hen)(hen)難(nan)分辨。然(ran)(ran)而(er)(er)(er),在兩個(ge)孩子不斷(duan)成(cheng)長(chang)時(shi)(shi),就(jiu)會(hui)(hui)產(chan)生(sheng)(sheng)(sheng)這(zhe)樣或(huo)那(nei)樣的(de)(de)(de)(de)(de)(de)(de)(de)(de)差(cha)異鋰(li)(li)(li)動(dong)(dong)(dong)(dong)(dong)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)也是這(zhe)樣。使(shi)(shi)(shi)(shi)用(yong)一(yi)(yi)(yi)(yi)段時(shi)(shi)間(jian)產(chan)生(sheng)(sheng)(sheng)差(cha)異后(hou),采用(yong)整(zheng)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)控(kong)制(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)方式(shi)是難(nan)以適用(yong)于(yu)(yu)(yu)鋰(li)(li)(li)動(dong)(dong)(dong)(dong)(dong)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)(de)(de)(de)(de)(de),如(ru)一(yi)(yi)(yi)(yi)個(ge)36V的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)堆,必(bi)(bi)須用(yong)10只(zhi)(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)串聯。整(zheng)體(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)(de)(de)充電(dian)(dian)(dian)(dian)(dian)(dian)控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是42V,而(er)(er)(er)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是26V。用(yong)整(zheng)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)控(kong)制(zhi)方式(shi),初(chu)始使(shi)(shi)(shi)(shi)用(yong)階段由于(yu)(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)一(yi)(yi)(yi)(yi)致性特別好,也許不會(hui)(hui)出現(xian)什(shen)么問(wen)題(ti)(ti)。在使(shi)(shi)(shi)(shi)用(yong)一(yi)(yi)(yi)(yi)段時(shi)(shi)間(jian)以后(hou)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)內(nei)阻和電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)產(chan)生(sheng)(sheng)(sheng)波動(dong)(dong)(dong)(dong)(dong),形(xing)成(cheng)不一(yi)(yi)(yi)(yi)致的(de)(de)(de)(de)(de)(de)(de)(de)(de)狀(zhuang)態(tai)(tai),(不一(yi)(yi)(yi)(yi)致是絕對(dui)的(de)(de)(de)(de)(de)(de)(de)(de)(de),一(yi)(yi)(yi)(yi)致性是相(xiang)對(dui)的(de)(de)(de)(de)(de)(de)(de)(de)(de))這(zhe)種時(shi)(shi)候仍(reng)然(ran)(ran)使(shi)(shi)(shi)(shi)用(yong)整(zheng)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)控(kong)制(zhi)是不能達(da)到(dao)(dao)其目的(de)(de)(de)(de)(de)(de)(de)(de)(de)的(de)(de)(de)(de)(de)(de)(de)(de)(de)。例如(ru)10只(zhi)(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)其中(zhong)兩只(zhi)(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)在2.8V,四(si)只(zhi)(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是3.2V,四(si)只(zhi)(zhi)(zhi)是3.4V,現(xian)在的(de)(de)(de)(de)(de)(de)(de)(de)(de)整(zheng)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是32V,我們讓它繼續放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)一(yi)(yi)(yi)(yi)直(zhi)工作(zuo)到(dao)(dao)26V。這(zhe)樣,那(nei)兩只(zhi)(zhi)(zhi)2.8V的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)就(jiu)低于(yu)(yu)(yu)2.6V 處于(yu)(yu)(yu)了過(guo)(guo)(guo)(guo)放(fang)(fang)狀(zhuang)態(tai)(tai)。鋰(li)(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)幾(ji)次過(guo)(guo)(guo)(guo)放(fang)(fang)就(jiu)等于(yu)(yu)(yu)報廢。反之,用(yong)整(zheng)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)控(kong)制(zhi)充電(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)方式(shi)進(jin)(jin)行充電(dian)(dian)(dian)(dian)(dian)(dian),也會(hui)(hui)出現(xian)過(guo)(guo)(guo)(guo)充的(de)(de)(de)(de)(de)(de)(de)(de)(de)狀(zhuang)況。比如(ru)用(yong)上述10只(zhi)(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)當時(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)狀(zhuang)態(tai)(tai)進(jin)(jin)行充電(dian)(dian)(dian)(dian)(dian)(dian)。整(zheng)體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)達(da)到(dao)(dao)42V時(shi)(shi),那(nei)兩只(zhi)(zhi)(zhi)2.8V的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)處于(yu)(yu)(yu)"饑餓(e)"的(de)(de)(de)(de)(de)(de)(de)(de)(de)狀(zhuang)態(tai)(tai),而(er)(er)(er)迅速(su)吸收(shou)電(dian)(dian)(dian)(dian)(dian)(dian)量,就(jiu)會(hui)(hui)超過(guo)(guo)(guo)(guo)4.2V,而(er)(er)(er)過(guo)(guo)(guo)(guo)充的(de)(de)(de)(de)(de)(de)(de)(de)(de)超過(guo)(guo)(guo)(guo)4.2V的(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi),不僅由于(yu)(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)過(guo)(guo)(guo)(guo)高產(chan)生(sheng)(sheng)(sheng)報廢,甚至(zhi)還(huan)會(hui)(hui)發生(sheng)(sheng)(sheng)危險,這(zhe)就(jiu)是鋰(li)(li)(li)動(dong)(dong)(dong)(dong)(dong)力(li)(li)電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)特性。

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  自從人(ren)類發(fa)明了鋰電池,其(qi)(qi)使用技術(shu)一直在不斷提高,如(ru)小容量的(de)(de)手機電池,使用技術(shu)已達到完美程(cheng)度。然而,做為大(da)功率(lv)大(da)容量的(de)(de)鋰動力電池,其(qi)(qi)使用技術(shu)仍然處于開發(fa)研(yan)制階段。

  人(ren)們(men)對較小容量(liang)的(de)(de)(de)10AH電(dian)(dian)(dian)(dian)池采(cai)取了(le)單(dan)(dan)體(ti)控(kong)(kong)壓(ya)(ya)恒(heng)流充(chong)電(dian)(dian)(dian)(dian)方式,在(zai)(zai)放(fang)電(dian)(dian)(dian)(dian)時(shi)(shi)使用(yong)(yong)整(zheng)體(ti)電(dian)(dian)(dian)(dian)壓(ya)(ya)控(kong)(kong)制(zhi)(zhi),在(zai)(zai)電(dian)(dian)(dian)(dian)壓(ya)(ya)較高(gao)時(shi)(shi)就(jiu)使其(qi)保護,停止工(gong)作。比(bi)如在(zai)(zai)整(zheng)體(ti)電(dian)(dian)(dian)(dian)壓(ya)(ya)30V時(shi)(shi)就(jiu)控(kong)(kong)制(zhi)(zhi)其(qi)停止工(gong)作了(le)。這樣,一(yi)(yi)般在(zai)(zai)一(yi)(yi)致(zhi)性比(bi)較好的(de)(de)(de)電(dian)(dian)(dian)(dian)池組(zu)里,單(dan)(dan)體(ti)電(dian)(dian)(dian)(dian)池的(de)(de)(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)也(ye)不會低(di)于2.6V。而充(chong)電(dian)(dian)(dian)(dian)時(shi)(shi)由(you)(you)于采(cai)取單(dan)(dan)體(ti)充(chong)電(dian)(dian)(dian)(dian),單(dan)(dan)體(ti)控(kong)(kong)制(zhi)(zhi),就(jiu)能(neng)夠使每只電(dian)(dian)(dian)(dian)池的(de)(de)(de)工(gong)作效率達(da)到比(bi)較理想的(de)(de)(de)程(cheng)度。然而這種控(kong)(kong)制(zhi)(zhi)仍然不會使人(ren)們(men)滿足,并沒有使電(dian)(dian)(dian)(dian)池達(da)到100%的(de)(de)(de)工(gong)作量(liang),比(bi)如廣東的(de)(de)(de)一(yi)(yi)家電(dian)(dian)(dian)(dian)動自行車(che)公(gong)司,用(yong)(yong)10AH/36V的(de)(de)(de)電(dian)(dian)(dian)(dian)池組(zu)充(chong)一(yi)(yi)次電(dian)(dian)(dian)(dian)續駛(shi)60k/m,而另一(yi)(yi)家電(dian)(dian)(dian)(dian)動自行車(che)公(gong)司使用(yong)(yong)同樣的(de)(de)(de)電(dian)(dian)(dian)(dian)池組(zu)測試,可續駛(shi)75km,這不能(neng)不說鋰動力(li)電(dian)(dian)(dian)(dian)池的(de)(de)(de)使用(yong)(yong)技(ji)術(shu)是(shi)有高(gao)低(di)之(zhi)分(fen)的(de)(de)(de)。由(you)(you)于鋰動力(li)電(dian)(dian)(dian)(dian)池的(de)(de)(de)使用(yong)(yong)技(ji)術(shu)是(shi)每個研發單(dan)(dan)位的(de)(de)(de)機密,他(ta)們(men)在(zai)(zai)研發過程(cheng)中都(dou)投入大量(liang)的(de)(de)(de)人(ren)力(li)物力(li)資源,所以,使用(yong)(yong)技(ji)術(shu)的(de)(de)(de)高(gao)低(di),不能(neng)不說這是(shi)他(ta)們(men)開發市(shi)場爭創品牌的(de)(de)(de)資本。

  鋰動力電(dian)池理(li)想(xiang)的管(guan)理(li)應該是均(jun)衡保護控(kong)制。這(zhe)種控(kong)制的要求是幾(ji)(ji)只幾(ji)(ji)十只甚至是幾(ji)(ji)百只的電(dian)池組,每只電(dian)池不僅能(neng)夠管(guan)理(li)和保護,而且在(zai)放電(dian)時(shi)還要使每只電(dian)池的電(dian)壓(ya)保持均(jun)衡一(yi)致(zhi)。如同(tong)(tong)幾(ji)(ji)十杯水(shui),在(zai)同(tong)(tong)一(yi)個(ge)水(shui)平(ping)線上平(ping)衡一(yi)致(zhi)地往外流(liu)。在(zai)充電(dian)時(shi),也如幾(ji)(ji)十杯同(tong)(tong)一(yi)水(shui)平(ping)線上的水(shui),在(zai)同(tong)(tong)一(yi)個(ge)電(dian)壓(ya)線上,均(jun)衡一(yi)致(zhi)地進行充電(dian)。

  這(zhe)種(zhong)要(yao)求似乎刻苛(ke),可鋰勸力(li)電池(chi)要(yao)想(xiang)百分之百的(de)(de)被用戶認可,只有做到這(zhe)種(zhong)程度(du)才行。因為(wei)許(xu)多用戶,特(te)別是(shi)消費者(zhe),他們(men)不懂如(ru)(ru)何單獨檢測,如(ru)(ru)何各(ge)別處理(li)單體出問題的(de)(de)電池(chi),鋰動力(li)電池(chi)的(de)(de)管理(li)只有達到智能化(hua)程度(du),才能徹底開辟出這(zhe)個宏大的(de)(de)市場。所以說(shuo),鋰動力(li)電池(chi)市場目前亟待解決的(de)(de)是(shi)使用技(ji)術問題。

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