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鎳氫電池簡單知識

鎳(nie)(nie)氫電池(chi)(chi)規范叫法:金屬氫化物鎳(nie)(nie)電池(chi)(chi)

標稱電(dian)(dian)(dian)壓(表(biao)示電(dian)(dian)(dian)池電(dian)(dian)(dian)壓的近似值):nX1.2V。(以3508氫電(dian)(dian)(dian)為例,n=3)

終止電壓(規(gui)定放(fang)電終止時):nX1.0V。

充(chong)電制(zhi)式:(恒(heng)流(liu),在以0.2C放(fang)電至終止電壓后開始恒(heng)流(liu)充(chong)電)

1、0.4C充電(dian)(dian):以(yi)0.4C充電(dian)(dian)3.5h

2、完全(quan)充(chong)電:以0.1C充(chong)電16h

放(fang)電(dian)性能:(只說其(qi)一,與大家關(guan)系密切的)

0.2C放電:以0.2C放電至終(zhong)止(zhi)電壓,放電時(shi)間(jian)應不小于(yu)5h。

國家技術監督部門鑒定氫(qing)電(dian)(dian)(dian)容量,是(shi)按照0.4C的(de)充(chong)電(dian)(dian)(dian)制式充(chong)電(dian)(dian)(dian),并按照0.2C的(de)放電(dian)(dian)(dian)制式放電(dian)(dian)(dian)的(de)。完全充(chong)電(dian)(dian)(dian)是(shi)用于(yu)鑒定電(dian)(dian)(dian)池的(de)儲存性能的(de),在儲存12個月后,經完全充(chong)電(dian)(dian)(dian)后,以0.2C放電(dian)(dian)(dian),時間不(bu)(bu)應(ying)低于(yu)4h。過(guo)充(chong)電(dian)(dian)(dian)性能:0.4C充(chong)電(dian)(dian)(dian)結束后,繼續以0.1C充(chong)電(dian)(dian)(dian)48h,應(ying)不(bu)(bu)變形、不(bu)(bu)漏夜、不(bu)(bu)冒煙、等(deng)等(deng)。

以上是(shi)對氫電國(guo)家(jia)標準GB/T18288-2000的簡(jian)單描述,由(you)此我(wo)們可以看(kan)出幾個問題:

1、對于氫(qing)電,完全充(chong)電有好處,可以充(chong)的(de)(de)更飽,好象就是大(da)家(jia)的(de)(de)激活概念。

2、但是,完全充電是有條件的,那就是0.1C,但市場上的充電器不會設計這么小的充電電流(以3508氫電計,應是50mA),如果用普通的充電器16小時(shi),要么(me)充(chong)電(dian)器充(chong)滿后(hou)已經截止,剩下是浪費時(shi)間,要么(me)充(chong)滿后(hou)的涓流過(guo)大(da)造成過(guo)充(chong)。但氫電(dian)抗過(guo)充(chong)的能力比鋰(li)電(dian)強的多。即使這樣我們(men)也不應該去考驗它呀(ya)。

3、10幾(ji)個(ge)小時(shi)的(de)(de)(de)充(chong)(chong)(chong)電(dian)(dian)時(shi)間(jian)概念是(shi)(shi)從氫(qing)電(dian)(dian)時(shi)延續(xu)來的(de)(de)(de),但(dan)對于鋰電(dian)(dian)已經不(bu)(bu)適(shi)用了。氫(qing)電(dian)(dian)的(de)(de)(de)規范有(you)一個(ge)完全充(chong)(chong)(chong)電(dian)(dian)的(de)(de)(de)條(tiao)(tiao)款(kuan),但(dan)是(shi)(shi)有(you)條(tiao)(tiao)件的(de)(de)(de)。而(er)鋰電(dian)(dian)根本沒(mei)有(you)相應的(de)(de)(de)條(tiao)(tiao)款(kuan),只不(bu)(bu)過在檢測前給一個(ge)預循(xun)環,而(er)預循(xun)環充(chong)(chong)(chong)電(dian)(dian)恒流(liu)到4.2V即結束,根本沒(mei)有(you)后面的(de)(de)(de)橫(heng)壓補電(dian)(dian)過程。鋰電(dian)(dian)不(bu)(bu)用所謂的(de)(de)(de)“激(ji)活”。電(dian)(dian)池(chi)生產(chan)廠根本沒(mei)有(you)什么激(ji)活不(bu)(bu)激(ji)活的(de)(de)(de)過程,生產(chan)出的(de)(de)(de)電(dian)(dian)池(chi)都是(shi)(shi)活的(de)(de)(de),只是(shi)(shi)氫(qing)電(dian)(dian)不(bu)(bu)適(shi)宜(yi)長(chang)時(shi)間(jian)儲存,時(shi)間(jian)長(chang)了會“死”,建議大家(jia)氫(qing)電(dian)(dian)不(bu)(bu)用時(shi),每(mei)三個(ge)月(yue)進(jin)行(xing)一個(ge)充(chong)(chong)(chong)放循(xun)環,并充(chong)(chong)(chong)滿保(bao)存。保(bao)存溫度不(bu)(bu)能過高。(柜(ju)臺(tai)內被射燈照(zhao)射很長(chang)時(shi)間(jian)的(de)(de)(de)不(bu)(bu)要買,儲存很長(chang)時(shi)間(jian)的(de)(de)(de)不(bu)(bu)要買)

4、氫電(dian)充飽后電(dian)壓是(shi)nX1.45V,以3508氫電(dian)為例(li)是(shi)4.35V,市場(chang)上(shang)的品牌(pai)座(zuo)充,如(ru)果充氫電(dian)滿意(yi),則(ze)(ze)絕(jue)對不(bu)能(neng)充鋰電(dian),如(ru)果充鋰電(dian)滿意(yi)則(ze)(ze)充氫電(dian)不(bu)飽,但不(bu)會損壞。因為這種座(zuo)充沒(mei)有判斷電(dian)池類型的能(neng)力(li),只是(shi)固定好了一個截止(zhi)電(dian)壓。

5、所以,我們在市場(chang)上(shang)看到的旅行充側面有一個氫(qing)電(dian)的選擇開(kai)關,實際上(shang)就(jiu)是切換截止電(dian)壓的。

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