公开(公告)号：US20140327431A1

公开(公告)日：2014-11-06

申请号：US14264195

申请日：2014-04-29

Applicant: DENSO CORPORATION

Inventor： Syota NAKAMURA ,  Junichi FUKUTA

IPC: G01R35/00

CPC classification number: G01R31/42 ,  G01R19/0084

Abstract: A voltage detection device controls operation of system main relays to change an applied voltage supplied to detection circuits. An error of each of the detection circuits is corrected on the basis of a detection value of each of the detection circuits when the applied voltage is changed. In particular, an offset value is corrected on the basis of a detection value of each of the detection circuits when the system main relays and booster switches are controlled so that a voltage of a high voltage battery supplied to each of the detection circuits becomes zero. A gain error is further corrected on the basis of a detection value of each of the detection circuits when the system main relays and the booster switches are controlled so that the applied voltage supplied to each of the detection circuits becomes equal to the voltage of the high voltage battery.

Abstract translation: 电压检测装置控制系统主继电器的操作，以改变提供给检测电路的施加电压。 基于每个检测电路在施加电压改变时的检测值来校正每个检测电路的误差。 特别地，当系统主继电器和升压开关被控制使得提供给每个检测电路的高电压电池的电压变为零时，基于每个检测电路的检测值来校正偏移值。 当系统主继电器和升压开关被控制时，基于每个检测电路的检测值进一步校正增益误差，使得提供给每个检测电路的施加电压变得等于高电压 电压电池。