公开(公告)号：US20250067812A1

公开(公告)日：2025-02-27

申请号：US18941226

申请日：2024-11-08

Applicant: DENSO CORPORATION

Inventor： Tomomi ASAI ,  Yoshikazu KUSANO ,  Nobuo YAMAMOTO ,  Shogo SUZUKI ,  Hiroyasu SUZUKI ,  Keisuke GOTO

IPC: G01R31/392 ,  B60L58/16 ,  G01R31/367 ,  G01R31/382 ,  G01R31/396

Abstract: A vehicle battery assessment system includes an information acquisition unit, a learned model acquisition unit, a remaining life assessment unit, and an assessment result output unit. The information acquisition unit acquires at least vehicle information of a vehicle installed with a battery and usage history information of the battery. The learned model acquisition unit acquires a learned model that is created in advance by setting at least the vehicle information of the vehicle and the usage history information of the battery as explanatory variables, and the remaining life of the battery as a target variable. The remaining life assessment unit assesses the remaining life of the battery based on the vehicle information and the usage history information acquired by the information acquisition unit and the learned model. The assessment result output unit outputs the assessment result of the remaining life assessment unit.

公开(公告)号：US20230122626A1

公开(公告)日：2023-04-20

申请号：US18068691

申请日：2022-12-20

Applicant: DENSO CORPORATION

Inventor： Tomomi ASAI ,  Nobuo Yamamoto ,  Hiroyasu Suzuki ,  Katsuki Hayashi ,  Yuya Minabe

IPC: G01R31/392 ,  H02J7/00 ,  G01R31/371 ,  G01R31/3842

Abstract: A server for a deterioration degree determination system for a secondary battery includes an estimation formula memory unit and an update unit. The estimation formula memory unit stores an estimation formula for determining a deterioration degree based on a battery characteristic related to transition of a battery state over a predetermined voltage section in the secondary battery or a battery characteristic relationship value related to the battery characteristic. The update unit that updates the estimation formula stored in the estimation formula memory unit based on the battery characteristic related to the transition of the battery state of the secondary battery acquired by charging and discharging the secondary battery in an external terminal.

公开(公告)号：US20230118313A1

公开(公告)日：2023-04-20

申请号：US18068650

申请日：2022-12-20

Applicant: DENSO CORPORATION

Inventor： Tomomi ASAI ,  Nobuo Yamamoto ,  Hiroyasu Suzuki ,  Katsuki Hayashi ,  Yuya Minabe

IPC: G01R31/392 ,  G01R31/3835 ,  G01R31/367

Abstract: In a deterioration degree determination device for a secondary battery, a battery information acquisition unit acquires battery information related to the secondary battery, and a feasibility determination unit determines feasibility of determination of deterioration degree for each secondary battery based on the battery information and a feasibility determination reference prepared in advance. A battery characteristic acquisition unit acquires a battery characteristic related to transition of a battery state in a predetermined voltage section for the secondary battery for which the determination of the deterioration degree is determined to be feasible by the feasibility determination unit. A deterioration degree determination unit determines the deterioration degree of the secondary battery for which the determination of the deterioration degree is determined to be feasible, based on the battery characteristic acquired by the battery characteristic acquisition unit or a battery characteristic relationship value calculated based on the battery characteristic.

公开(公告)号：US20230118311A1

公开(公告)日：2023-04-20

申请号：US18068828

申请日：2022-12-20

Applicant: DENSO CORPORATION

Inventor： Tomomi ASAI ,  Nobuo YAMAMOTO ,  Hiroyasu SUZUKI ,  Katsuki HAYASHI ,  Yuya MINABE

IPC: G01R31/392 ,  G01R31/396 ,  G01R31/3835 ,  H02J7/00 ,  B60R16/033 ,  H01M10/48

Abstract: A deterioration degree determination device includes a charging and discharging control unit, a battery characteristic acquisition unit, and a determination unit. The charging and discharging control unit, in a state where multiple secondary batteries are connected to each other to form a battery pack, performs a charging and discharging operation of the battery pack while voltages of the secondary batteries are individually measured. The battery characteristic acquisition unit acquires a battery characteristic related to transition in a battery state over a predetermined voltage section for at least some of the multiple secondary batteries. The determination unit determines a deterioration degree of at least some of the multiple secondary batteries based on the battery characteristic or a battery characteristic relationship value calculated based on the battery characteristic.

公开(公告)号：US20220146590A1

公开(公告)日：2022-05-12

申请号：US17585936

申请日：2022-01-27

Applicant: DENSO CORPORATION

Inventor： Tomomi ASAI ,  Nobuo YAMAMOTO ,  Hiroyasu SUZUKI ,  Katsuki HAYASHI ,  Yuya MINABE

IPC: G01R31/392 ,  G01R31/396 ,  H01M10/42

Abstract: A degradation degree assessment device for a secondary battery is to assess a degree of degradation of a secondary battery and includes a battery characteristic acquisition unit, a capacity estimation unit, and an assessment unit. The battery characteristic acquisition unit acquires a battery characteristic relating to a voltage transition of the secondary battery in a predetermined voltage section. The assessment unit assesses the degree of degradation of the secondary battery based on the battery characteristic acquired by the battery characteristic acquisition unit or based on a battery characteristic-related value computed on the basis of the battery characteristic.