公开(公告)号：US20230173924A1

公开(公告)日：2023-06-08

申请号：US18151571

申请日：2023-01-09

Applicant: DENSO CORPORATION

Inventor： Ryuta YAMAGUCHI ,  Yamato UTSUNOMIYA

IPC: B60L3/00 ,  H02J7/00 ,  B60L53/62 ,  B60L58/15 ,  B60L50/60 ,  H01M10/46

CPC classification number: B60L3/0046 ,  H02J7/00714 ,  H02J7/0047 ,  H02J7/00302 ,  B60L53/62 ,  B60L58/15 ,  B60L50/60 ,  H01M10/46 ,  B60L53/18

Abstract: A power supply system includes a storage battery and first and second current sensors for detecting electric current flowing to the storage battery. The second current sensor has a wider current detection range than the first current sensor. A storage battery control apparatus includes: an abnormality determination unit that determines whether an abnormality has occurred in the first current sensor; a first charging control unit that performs, when no abnormality has occurred in the first current sensor, a charging completion determination based on the electric current detected by the first current sensor; and a second charging control unit that performs, when an abnormality has occurred in the first current sensor, the charging completion determination based on the electric current detected by the second current sensor. The first charging control unit and the second charging control unit have different determination criteria for determining completion of the charging of the storage battery.

公开(公告)号：US20190339332A1

公开(公告)日：2019-11-07

申请号：US16511920

申请日：2019-07-15

Applicant: DENSO CORPORATION

Inventor： Yuki TACHIBANA ,  Yamato UTSUNOMIYA ,  Takeshi SADA

IPC: G01R31/382 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00 ,  B60L58/12

Abstract: A battery pack includes a secondary battery, a state of charge calculator, an integrated current amount calculator, a differential state of charge calculator, a full charge capacity calculator, and a charging-and-discharging control section. The differential state of charge calculator calculates a differential state of charge between a first state of charge at a first detection timing and a second state of charge at a second detection timing. The integrated current amount calculator calculates an integrated amount of a current flowing to the secondary battery in a subject period from the first detection timing to the second detection timing. The full charge capacity calculator calculates a full charge capacity of the secondary battery based on the differential state of charge and the integrated current amount. The charging-and-discharging control section is configured to restrict one of the charging and the discharging of the secondary battery during the subject period.

公开(公告)号：US20190252908A1

公开(公告)日：2019-08-15

申请号：US16395726

申请日：2019-04-26

Applicant: DENSO CORPORATION

Inventor： Shimpei TAKITA ,  Yamato UTSUNOMIYA ,  Shunsuke TOMOTO

IPC: H02J7/14

CPC classification number: H02J7/1423 ,  B60R16/02 ,  B60R16/03 ,  B60R16/033 ,  H02H7/00 ,  H02J7/00

Abstract: A power supply control apparatus is applied to a power supply system that includes an opening and closing unit that has a plurality of switches that are connected in series on an energization path over which energization from a voltage source is performed and a plurality of diodes that are respectively connected in parallel to the plurality of switches, in which the plurality of diodes include diodes that are arranged in opposite directions to each other. The power supply control apparatus includes a determining unit determining that an abnormal state has occurred in which a current is flowing to any of the plurality of diodes in a state in which the plurality of switches are turned off, and a control unit controlling the switch that is connected in parallel to the diode through which the current is flowing to an on-state, when the abnormal state is determined to have occurred.