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    • 23. 发明授权
    • Battery apparatus and method for monitoring battery state of a secondary battery
    • 用于监视二次电池的电池状态的电池装置和方法
    • US07009401B2
    • 2006-03-07
    • US10636672
    • 2003-08-08
    • Takuya KinoshitaHideki MiyazakiAkihiko EmoriTokiyoshi Hirasawa
    • Takuya KinoshitaHideki MiyazakiAkihiko EmoriTokiyoshi Hirasawa
    • G01N27/416
    • B60L11/1861B60L2210/20G01R31/3648G01R31/3662H01M10/44H01M10/48Y02T10/7016Y02T10/7044Y02T10/705Y02T10/725
    • Motor generator (MG) is controlled via motor controller by MG control processor of CPU, so that voltage and current of battery is detected while changing frequency of state detection current flowing in the secondary battery. According to the detection results, impedance is calculated in the impedance calculation unit. Remaining mount is calculated from the impedance obtained and the battery characteristics stored in memory. Furthermore, remaining amount change correction unit adds integration current between impedance measurements to the remaining amount for correcting the remaining amount. Weighting coefficient is determined from the standard deviation based on the corrected value and the remaining amount and weighted mean is calculated in weighted mean unit. Next, the result of the remaining amount calculation is used to perform service life calculation and service life correction calculation, and weighted mean is calculated in the same way as the remaining amount.
    • 电机发电机(MG)由CPU的MG控制处理器通过电动机控制器进行控制,从而在改变二次电池中状态检测电流的频率的同时检测电池的电压和电流。 根据检测结果,在阻抗计算单元中计算阻抗。 根据所获得的阻抗和存储在存储器中的电池特性计算剩余安装量。 此外,剩余量变化校正单元将阻抗测量之间的积分电流加到用于校正剩余量的剩余量。 基于校正值从标准偏差确定加权系数,并以加权平均单位计算剩余量和加权平均值。 接下来,使用剩余量计算的结果来执行使用寿命计算和使用寿命校正计算,并且以与剩余量相同的方式计算加权平均值。