公开(公告)号：EP3270173A1

公开(公告)日：2018-01-17

申请号：EP16761649.9

申请日：2016-03-04

申请人： Hitachi Automotive Systems, Ltd.

发明人： KANAI, Tomonori ,  KUDO, Akihiko ,  ARIMA, Tomoyuki ,  TSUKAMOTO, Akiko

IPC分类号： G01R31/02 ,  G01R31/36

CPC分类号： G01R31/3637 ,  G01R31/02 ,  G01R31/36 ,  G01R31/361 ,  G01R31/362 ,  G01R31/3696 ,  H01M2220/20

摘要： Measurement of a cell voltage is executed immediately after diagnosis of a battery management device is ended. In a battery management device 10, current sources G11 and G12 repeatedly perform an energization operation to cause a current to flow to voltage detection lines L1, L2 and L3 with a magnitude of the current that enables each amount of charge stored in capacitors C11, C12, and C13 changed by one energization operation to fall within a range corresponding to a fluctuation width of terminal voltages of battery cells 21 and 22 during the energization operation when resistors R11, R12, and R13 are in a normal state. When the difference between the current terminal voltage of the battery cell 21 or 22 and the past terminal voltage of the battery cell 21 or 22 is larger than the predetermined threshold value, the microcomputer 130 diagnoses that the resistor R11, R12 or R13 is in the open state.

摘要翻译： 在电池管理装置的诊断结束后立即执行电池电压的测量。 在电池管理装置10中，电流源G11，G12反复进行通电动作，使电流以能够使电容器C11，C12存储的各电荷量的电流的大小流过电压检测线L1，L2，L3 以及C13在通电操作期间改变，以在电阻器R11，R12和R13处于正常状态时的通电操作期间落入与电池单元21和22的端子电压的波动宽度相对应的范围内。 当电池单元21或22的当前端子电压与电池单元21或22的过去端子电压之间的差值大于预定阈值时，微型计算机130诊断出电阻器R11，R12或R13处于 开放状态。