鉅大LARGE | 點擊(ji)率量:181次 | 202多年06月12日
動力鋰離子電池和容量電池的聯系和差別介紹
動力鋰電池即為工具供應動力來源的電源,多指為電動汽車、電動列車、電動自行車、高爾夫球車供應動力的蓄電池。其重要差別于用于汽車發動機起動的起動電池。多采用閥口密封式鉛酸蓄電池、敞口式管式鉛酸蓄電池以及磷酸鐵鋰蓄電池。
蓄電池是作為動力鋰電池中的(de)一(yi)種,它(ta)(ta)的(de)用(yong)(yong)途是(shi)(shi)能(neng)把有(you)限的(de)電(dian)(dian)(dian)(dian)(dian)能(neng)儲存(cun)起來,在(zai)合適的(de)地方使(shi)用(yong)(yong)。它(ta)(ta)的(de)工作(zuo)原理就(jiu)是(shi)(shi)把化(hua)(hua)(hua)學能(neng)轉化(hua)(hua)(hua)為(wei)電(dian)(dian)(dian)(dian)(dian)能(neng)。它(ta)(ta)用(yong)(yong)填(tian)滿海綿狀(zhuang)鉛(qian)(qian)的(de)鉛(qian)(qian)板作(zuo)負極(ji),填(tian)滿二(er)(er)氧化(hua)(hua)(hua)鉛(qian)(qian)的(de)鉛(qian)(qian)板作(zuo)正極(ji),并用(yong)(yong)22~28%的(de)稀硫酸作(zuo)電(dian)(dian)(dian)(dian)(dian)解(jie)質(zhi)。在(zai)充電(dian)(dian)(dian)(dian)(dian)時,電(dian)(dian)(dian)(dian)(dian)能(neng)轉化(hua)(hua)(hua)為(wei)化(hua)(hua)(hua)學能(neng),放電(dian)(dian)(dian)(dian)(dian)時化(hua)(hua)(hua)學能(neng)又轉化(hua)(hua)(hua)為(wei)電(dian)(dian)(dian)(dian)(dian)能(neng)。電(dian)(dian)(dian)(dian)(dian)池在(zai)放電(dian)(dian)(dian)(dian)(dian)時,金屬(shu)鉛(qian)(qian)是(shi)(shi)負極(ji),發生(sheng)(sheng)氧化(hua)(hua)(hua)反應,被(bei)氧化(hua)(hua)(hua)為(wei)硫酸鉛(qian)(qian);二(er)(er)氧化(hua)(hua)(hua)鉛(qian)(qian)是(shi)(shi)正極(ji),發生(sheng)(sheng)還原反應,被(bei)還原為(wei)硫酸鉛(qian)(qian)。電(dian)(dian)(dian)(dian)(dian)池在(zai)用(yong)(yong)直流電(dian)(dian)(dian)(dian)(dian)充電(dian)(dian)(dian)(dian)(dian)時,兩極(ji)分(fen)別(bie)生(sheng)(sheng)成(cheng)鉛(qian)(qian)和二(er)(er)氧化(hua)(hua)(hua)鉛(qian)(qian)。移去(qu)電(dian)(dian)(dian)(dian)(dian)源后,它(ta)(ta)又恢復到放電(dian)(dian)(dian)(dian)(dian)前的(de)狀(zhuang)態,組(zu)(zu)成(cheng)化(hua)(hua)(hua)學電(dian)(dian)(dian)(dian)(dian)池。蓄(xu)電(dian)(dian)(dian)(dian)(dian)池是(shi)(shi)能(neng)反復充電(dian)(dian)(dian)(dian)(dian)、放電(dian)(dian)(dian)(dian)(dian)的(de)電(dian)(dian)(dian)(dian)(dian)池,叫做(zuo)二(er)(er)次電(dian)(dian)(dian)(dian)(dian)池。它(ta)(ta)的(de)電(dian)(dian)(dian)(dian)(dian)壓是(shi)(shi)2V,通常(chang)把三個(ge)蓄(xu)電(dian)(dian)(dian)(dian)(dian)池串(chuan)聯起來使(shi)用(yong)(yong),電(dian)(dian)(dian)(dian)(dian)壓是(shi)(shi)6V。汽車上用(yong)(yong)的(de)是(shi)(shi)6個(ge)蓄(xu)電(dian)(dian)(dian)(dian)(dian)池串(chuan)聯成(cheng)12V的(de)電(dian)(dian)(dian)(dian)(dian)池組(zu)(zu)。
鋰離子電池是一類由(you)鋰(li)金屬(shu)或鋰(li)合(he)金為負極(ji)材(cai)料、使(shi)用(yong)非(fei)水電解質溶液的(de)電池。由(you)于鋰(li)金屬(shu)的(de)化學特性(xing)非(fei)常活潑,使(shi)得鋰(li)金屬(shu)的(de)加工、保存、使(shi)用(yong),對(dui)環境(jing)要求(qiu)非(fei)常高。所以,鋰(li)離(li)子(zi)(zi)電池長期沒有(you)得到應(ying)用(yong)。隨(sui)著二(er)十(shi)世紀微電子(zi)(zi)技術(shu)的(de)發(fa)展,小型(xing)化的(de)設(she)備日(ri)益增多,對(dui)電源提(ti)出了(le)很(hen)高的(de)要求(qiu)。鋰(li)離(li)子(zi)(zi)電池隨(sui)之進(jin)入了(le)大規模(mo)的(de)實用(yong)階段。
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