• 基于51單片機的新型蓄電池容量檢測儀

    摘  要:為對蓄電池進行準確的容量測試,設計一種基于51單片機的新型蓄電池容量檢測儀。該裝置通過恒流電路控制蓄電池的放電,然后通過A/D轉換采樣,采集并存儲蓄電池在放電過程中的放電電壓值樣本得到放電曲線,計算出被測蓄電池的準確容量,通過蓄電池電壓能夠快速估算出該時刻對應電池剩余容量值。測試結果表明:該容量檢測儀精度良好,測量誤差在1%以內,能夠快速準確判定蓄電池剩余容量,具有較高的實用性與推廣價值。
    關鍵詞:蓄電池;容量檢測;MOSFET晶體管;快速測量;51單片機
    中圖分類號:TM912;TM930.114;TP368.2;TP274      文獻標志碼:A      文章編號:1674-5124(2013)05-0068-04
    New intelligent battery capacity detector based on 51 MCU
    XIA Gui-shu
    (Aviation Engineering Institute,Civil Aviation Flight University of China,Guanghan 618307,China)
    Abstract: The new intelligent battery capacity detector based on 51 MCU is proposed for testing the battery capacity accurately. This device controls the battery discharge through the constant current circuit, and then the voltage value during its discharge process is measured and the signal is converted by A/D converter. After that, 51 MCU can give the discharge curve and calculate battery capacity accurately. Besides, the current charge state of the battery is figured out according to the voltage value in a quick mode. The result shows that the new capacity detector is with high accuracy and the measurement error is within 1%. Because of this characteristic, the new detector can quickly and accurately determine the remaining battery capacity, so it has high practicality and promotional value.
    Key words: battery; capacity detection; MOSFET; quick measurement; 51 MCU
     
     
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