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蓄電池自行放電原因及排除

admin 2019-02-14

  蓄電池自行放電原因及排除


  充足電的蓄電池長時間放置不用,會逐漸損失電量,這種現象稱為目行放電。對于充足電的蓄電池,如果每晝夜容量下降不大于2%,就是正常的自放電,超過2%就是有故障了。 

  蓄電池自行放電的原因主要有:①電解液不純,雜質與極板之間以及沉附于極板上不同雜質之間形成電位差,通過電解液產生局部放電;②蓄電池溢出的電解液堆積在蓋板上,使正負極樁形成通路;③極板活性物質脫落,下部沉淀物過多使極板短路;④蓄電池電池長期放置不用,硫酸下沉,下部比重較上部大,極板上下部發生電位差引起自行放電等。


  蓄電池發生自放電故障后,應倒出電解液,取出極板組,抽出隔板,再用蒸餾水沖洗極板和隔板,然后重新組裝加人新的電解液重新充電。


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