Battery charge level detecting device
    3.
    发明授权
    Battery charge level detecting device 有权
    电池电量检测装置

    公开(公告)号:US06127805A

    公开(公告)日:2000-10-03

    申请号:US168073

    申请日:1998-10-08

    CPC分类号: G01R31/3624 G01R31/3648

    摘要: In the area of the charge level of 20.about.80% where the charge level of a battery does not appear in the terminal voltage of the battery, the battery ECU estimates charge level by integrating the currents of the charge and discharge of the battery. When the engine ECU detects that the ignition key is turned on, the motor generators are driven by the engine, and the generated electric power is accumulated in the battery. When the area where the charge level appears in the terminal voltage, is reached, the calculation of the charge level is performed from the current and voltage at that time. When this charge level has reached 80%, the calibration of said estimated charge level is performed by this value. Furthermore, it is also possible for this calibration to be prohibited when a heavy current is flowing and the error may become large in the calculation of the charge level. By the above mentioned methods, the charge level of a battery can accurately be detected.

    摘要翻译: 在电池的电池电压没有出现电池电量的20%的充电水平的区域中,电池ECU通过对电池的充电和放电电流进行积分来估计充电水平。 当发动机ECU检测到点火钥匙被接通时,电动发电机由发动机驱动,并且所产生的电力蓄积在电池中。 当达到终端电压出现充电电平的区域时,从当时的电流和电压进行充电电平的计算。 当该电荷水平达到80%时,通过该值来执行所述估计电荷水平的校准。 此外,当大电流流动时,也可能禁止该校准,并且在计算电荷水平时误差可能变大。 通过上述方法,可以准确地检测电池的充电水平。