公开(公告)号：US11424493B2

公开(公告)日：2022-08-23

申请号：US16744462

申请日：2020-01-16

Applicant: DENSO CORPORATION

Inventor： Naoto Yamashita ,  Masakazu Kouda ,  Fumihiko Hori ,  Shunichi Kubo

IPC: H01M10/48 ,  H01M10/42 ,  H02J7/00

Abstract: In a battery system including an assembled battery having a plurality of battery cells connected in series, each of a plurality of monitoring units includes a voltage classification unit configured to classify a terminal voltage between each pair of input terminals in the monitoring unit as a cell voltage or as a zero voltage that is a terminal voltage of substantially zero. The input terminals in each of all or all but one of the monitoring units include at least one specific terminal pair for acquiring the zero voltage at a different position and/or include a different number of specific terminal pairs for acquiring the zero voltage. Each of the plurality of monitoring units further includes an identifier generation unit configured to generate an identifier based on at least one of the position of the at least one specific terminal pair and the number of specific terminal pairs.

公开(公告)号：US11163014B2

公开(公告)日：2021-11-02

申请号：US16591764

申请日：2019-10-03

Applicant: DENSO CORPORATION

Inventor： Toru Wakimoto ,  Yusuke Shindo ,  Masakazu Kouda

IPC: G01R31/50 ,  G01R31/40

Abstract: An electrical leakage determination system that determines if an electrical leakage occurs includes a capacitor having first and second ends connected to a cathode side power supply path and a grounding section and a switch disposed in an electrical path formed parallel to the capacitor. When the capacitor discharges and a predetermined period has elapsed after the controller sets an energized state between the cathode-side power supply path and the grounding section by bringing the switch to an energizing position, the controller allows the capacitor to charge by setting an energization shut down state between the cathode-side power supply path and the grounding section by bringing the switch to an energization shut down position. The controller subsequently detects a voltage value of the capacitor and determines if the electrical leakage is either present or absent based on the voltage value.