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                                                                                                                                                                                                                                                                                                                                鉛酸蓄電池充不進電是什么原因?如何診斷?

                                                                                                                                                                                                                                                                                                                                2014-08-06   |  來源:煒業通科技

                                                                                                                                                                                                                                                                                                                                 蓄電池充不進電是指發動機在正常工作的情況下,蓄電池長時間充電而電壓上升很慢。其原因如下:

                                                                                                                                                                                                                                                                                                                                    1.充電線路中接線頭松動或銹蝕,使電阻增大,電流強度減小。

                                                                                                                                                                                                                                                                                                                                    2.蓄電池極板硫化,使其表面附有一層導電性能差的白色硫酸鋁晶粒。這種粗大晶粒堵塞極板孔隙后,電解液便難以滲入,導致內阻增大,電流無法通過。

                                                                                                                                                                                                                                                                                                                                    3.由于采取大電流給蓄電池充電或放電,電解液比重過大或液面高度不夠等原因,使蓄電池極板損壞。診斷時,先檢查各接線頭是否松動或銹蝕,然后根據充電時的現象來判斷極板是否硫化。若充電時電解液的溫度上升很快,或充電時間不長,電解液便產生大量氣泡,但電壓并未提高,電解液比重也無明顯增加,則說明極板已硫化。當硫化不嚴重時,可倒出全部電解液,注入蒸餾水,然后用2安培左右的小電流進行長時間充電,使硫酸鋁溶解,但應注意不要讓蓄電池溫度升高。當電解液比重在數小時內不增加時,表明蓄電池已充足電,再進行放電。

                                                                                                                                                                                                                                                                                                                                    經過多次充放電循環,使活性物質復原后,如仍不正常,應更換新品。

                                                                                                                                                                                                                                                                                                                                 

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