近日總有人說XX充電器好, 其他的如何如何差等諸多言論。為此，很有必要對此現象進行澄清。好的充電器至少應(ying)該是(shi)：即能大電(dian)(dian)流短(duan)時間把(ba)電(dian)(dian)池(chi)充滿電(dian)(dian)，同時又能令到電(dian)(dian)池(chi)溫升(sheng)很少。

      在(zai)所(suo)有的(de)(de)環(huan)境因(yin)素中，溫度對電池(chi)的(de)(de)充放電性(xing)能影響(xiang)最(zui)大，高于(yu)45度，對鎳(nie)氫電池(chi)性(xing)能和壽(shou)命有嚴重(zhong)影響(xiang)。為降(jiang)低(di)高溫對電池(chi)壽(shou)命的(de)(de)損害，某些(xie)新(xin)型的(de)(de)電池(chi)采用在(zai)電極(ji)(ji)端(duan)子上(shang)連接一(yi)個金屬(shu)導(dao)電片，降(jiang)低(di)局部高熱的(de)(de)可(ke)能性(xing)，另有工廠(chang)將電池(chi)殼外部做成(cheng)柵凸(tu)狀，組合時各單體(ti)電池(chi)凸(tu)部互相接觸，凹部構成(cheng)單體(ti)電池(chi)之間上(shang)下方向的(de)(de)空間，內部填充制冷劑，使其從(cong)電池(chi)下方向極(ji)(ji)柱端(duan)流動，進行冷卻。

為什么會產生高溫？
       當以0.5C或以上的(de)電(dian)(dian)(dian)流(liu)對鎳氫電(dian)(dian)(dian)池進行充電(dian)(dian)(dian), 就容易(yi)導(dao)致電(dian)(dian)(dian)池發熱(re)，特(te)別是充入了0.7C后。這時候有(you)一部(bu)份電(dian)(dian)(dian)能轉化為熱(re)能從而導(dao)致溫度上升。

環境溫度對電池性能有何影響？ 
      電極/電解液界面上的電化學反應與環境溫度有關，電極/電解液界面被視為電池的心臟。一般來說，高溫可加速化學反應，但同時也加快電池內部老化的過程。如果溫度下降，電極的反應率也下降，假設電池電壓保持恒定，放電電流降低，電池的功率輸出也會下降。如果溫度上升則相反，即電池輸出功率會上升，溫度也影響電解液的傳送速度溫度上升則加快，傳送溫度下降，傳送減慢，電池充放電性能也會受到影響。
       鎳鎘鎳氫電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)放電(dian)(dian)(dian)(dian)效(xiao)率在(zai)(zai)低(di)溫會(hui)(hui)(hui)有顯著的(de)(de)降(jiang)低(di)（如低(di)于-15℃），而在(zai)(zai)-20℃時(shi)(shi)，堿液達到起(qi)凝固點，電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)速度(du)(du)也將(jiang)(jiang)大大降(jiang)低(di)。在(zai)(zai)低(di)溫充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)低(di)于0℃會(hui)(hui)(hui)增(zeng)大電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)內(nei)壓并可能(neng)時(shi)(shi)安全(quan)閥(fa)開啟（電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)就會(hui)(hui)(hui)因(yin)此報廢了）。為了有效(xiao)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)，環(huan)境(jing)溫度(du)(du)范圍應在(zai)(zai)5-30℃之間，一般充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)率會(hui)(hui)(hui)隨溫度(du)(du)的(de)(de)升高而升高，高溫時(shi)(shi)析(xi)氧(yang)電(dian)(dian)(dian)(dian)位較低(di)，充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)效(xiao)率下(xia)(xia)降(jiang)。充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)時(shi)(shi)環(huan)境(jing)溫度(du)(du)一般控制(zhi)在(zai)(zai)３０度(du)(du)以下(xia)(xia)。當溫度(du)(du)升到45℃以上，高溫下(xia)(xia)充(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)材(cai)料的(de)(de)性能(neng)會(hui)(hui)(hui)退化，導致副反應，電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)內(nei)阻將(jiang)(jiang)會(hui)(hui)(hui)增(zeng)大，電(dian)(dian)(dian)(dian)池(chi)(chi)(chi)的(de)(de)循(xun)環(huan)壽命也將(jiang)(jiang)大大縮(suo)短。 

如何解決電池溫度過高？
A．    選擇慢充的充電器。
B．    利用散熱風扇進行冷卻。（風冷時，會令很多“智能”充電器不能自動判別充滿，好的充電器會導致電(dian)池(chi)稍微過充電(dian)，差的充電(dian)器會導致電(dian)池(chi)嚴重過充電(dian)）

有條件的話，大家可以檢查一下自己手上的充電器在充電末期的電池溫度，如果超過45度，最好馬上把它仍了。是不是好的充電器，電池的溫升是重要指標之一。