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電動車儀表正常過電,可就是不走!是啥情況?

發布時間:2019-09-11瀏覽次數:1984返回列表

    當電動車儀表出現情況時,你可以自己解決嗎?電動車儀表正常過電,可就是不走!是啥情況呢?
    有師傅遇到一輛電動車不走,具體情況如下:
    癥狀:儀表亮,但是扭轉把就是不走,剎車斷電線已經拔掉
    問:用萬用表怎么檢查控制器是不是壞了
    看樣子應該是經驗不足的新手,師傅們熱情的給了指點
    接新轉把試車,不轉
    測量轉把紅線電壓,為0V
    打開鑰匙,儀表亮,大燈不亮。測量粗紅線有36V,黃線(電門線)是0V
    經過一番指點,測量之后,有經驗的師傅應該都能看得出來,是因為控制器電門鎖線沒有進電,導致控制器不能工作。新手可能是因為看見儀表能正常亮起,以為電動車就是正常通電了,就懷疑是控制器的問題。所以,就有了開始的個問題:用萬用表怎么檢查控制器是不是壞了?
    確定了是控制器電門鎖不進電之后,檢查車頭儀表,發現是電門鎖有一根線虛接了。
    總結就是:大燈線和去控制器的線虛接然后斷了,電門鎖檔壞
    維修支招
    一般在控制器端的檢查方法是:
    去掉剎車斷電線,排除剎車斷電;
    用新轉把測試,排查轉把問題;
    測量電機霍爾沒問題,排查霍爾故障;
    測量粗紅、粗黑電壓正常,確定電門線有沒有電壓過來;
    請一定要檢查控制器的電源線,確定電門鎖線進電正常
    在確定電門線進電正常的時候,測量控制器轉把正,看有沒有5V。
    如果沒有5V電壓,就是控制器壞了。
    如果有5V電壓,可用修車寶測量控制器輸出。但此時也可以直接換控制器,因為經過上述排除之后,基本上可以判斷控制器有問題。

    在電動車維修的時候,有時并不需要直接測量控制器,用排除法一步步排除即可。








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