公开(公告)号：US20140176148A1

公开(公告)日：2014-06-26

申请号：US14132197

申请日：2013-12-18

Applicant: DENSO CORPORATION

Inventor： Tetsuya MAKIHARA ,  Kazutaka HONDA ,  Kazunori NAGAYA

IPC: G01R31/36

CPC classification number: G01R31/3658 ,  B60L11/1851 ,  B60L11/1853 ,  B60L2240/547 ,  G01R31/3637 ,  H02J7/0013 ,  H02J7/0019 ,  H02J7/0021 ,  Y02T10/7005 ,  Y02T10/7055

Abstract: In a voltage detecting device, a control unit turns on first switches and fifth switches corresponding to a plurality of unit batteries of an assembled battery to charge electric charge to first capacitors. The control unit simultaneously turns off at least one of the first switches or the fifth switches to hold the electric charge in the first capacitors. While selecting one of the unit batteries in a predetermined order as a target unit battery for voltage detection, the control unit temporarily turns off a fourth switch to reset electric charge of a second capacitor, and then turns of second switches and third switches in a state where one of the first switches and one of the fifth switches corresponding to the target unit battery are kept in an off state, thereby to detect a voltage of the target unit battery.

Abstract translation: 在电压检测装置中，控制单元接通与组电池的多个单位电池相对应的第一开关和第五开关，以向第一电容器充电电荷。 控制单元同时关闭第一开关或第五开关中的至少一个以将电荷保持在第一电容器中。 当以预定顺序选择单元电池之一作为用于电压检测的目标单元电池时，控制单元暂时关闭第四开关以复位第二电容器的电荷，然后在第二开关和第三开关处于一状态 其中第一开关中的一个和对应于目标单元电池的第五开关中的一个保持在关闭状态，从而检测目标单元电池的电压。