公开(公告)号：US20230333173A1

公开(公告)日：2023-10-19

申请号：US18211817

申请日：2023-06-20

Applicant: DENSO CORPORATION

Inventor： Yuuki HORI ,  Masaki UCHIYAMA

IPC: G01R31/389 ,  G01R35/00 ,  H02J7/00 ,  H01M10/42

CPC classification number: G01R31/389 ,  G01R35/005 ,  H02J7/0047 ,  H01M10/4285

Abstract: A battery monitoring apparatus is provided for a secondary battery that produces a change in reaction heat at a predetermined capacity when a storage capacity changes in accompaniment with a current conduction. The battery monitoring apparatus includes: an acquiring unit that acquires, during the current conduction, an impedance change of the secondary battery; and a capacity determination unit that determines, based on the impedance change acquired by the acquiring unit, that the storage capacity of the secondary battery is the predetermined capacity.

公开(公告)号：US20230318319A1

公开(公告)日：2023-10-05

申请号：US18329736

申请日：2023-06-06

Applicant: DENSO CORPORATION

Inventor： Takayuki TAKEUCHI ,  Yuuki HORI

IPC: H02J7/00 ,  G01R31/36 ,  H01M10/48 ,  H01M10/42 ,  B60L58/13 ,  G01R31/3835

CPC classification number: H02J7/0019 ,  G01R31/3648 ,  H01M10/486 ,  H01M10/425 ,  B60L58/13 ,  G01R31/3835 ,  H01M2010/4271 ,  H01M2220/20

Abstract: A battery device has a storage unit, a calculation unit, a level shifter, and an AD conversion unit. The storage unit stores battery information including a closed circuit voltage of a plurality of battery cells electrically connected to each other. The setting unit that sets an acquisition range of the closed circuit voltage based on the battery information. The level shifter and the AD conversion unit convert the closed circuit voltage into a digital signal within the acquisition range set by the calculation unit. The calculation unit changes the acquisition range when the closed circuit voltage is outside the acquisition range.