公开(公告)号：US20200371145A1

公开(公告)日：2020-11-26

申请号：US16992578

申请日：2020-08-13

Applicant: DENSO CORPORATION

Inventor： Nobuo YAMAMOTO ,  Ichiro YAMADA ,  Shuhei YOSHIDA ,  Masaya NAKAMURA ,  Takehiko YAMAKI ,  Hiroyasu SUZUKI ,  Katsuki HAYASHI

IPC: G01R27/26 ,  G01R31/389 ,  G01R31/388

Abstract: An abnormality determination device for a secondary battery includes an internal-resistance calculation unit, a threshold memory unit, a capacity balance comparison unit, and an abnormality determination unit. The internal-resistance calculation unit detects an internal resistance in a negative-electrode reaction resistance dominant region in which a reaction resistance of a negative electrode is dominant in a charge and discharge reaction of the secondary battery. The threshold memory unit stores a capacity balance threshold used as a reference for determining abnormality in a balance between a capacity of a positive electrode and a capacity of the negative electrode in the secondary battery. The capacity balance comparison unit compares the internal resistance calculated by the internal-resistance calculation unit with the capacity balance threshold stored in the threshold memory unit. The abnormality determination unit determines abnormality in capacity balance in the secondary battery based on a comparison result from the capacity balance comparison unit.

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：US20220229120A1

公开(公告)日：2022-07-21

申请号：US17577058

申请日：2022-01-17

Applicant: DENSO CORPORATION

Inventor： Keisuke GOTO ,  Haruki TANAKA ,  Mayu IIDA ,  Hiroyasu SUZUKI ,  Nobuo YAMAMOTO ,  Shogo SUZUKI

IPC: G01R31/392 ,  G01R31/378 ,  G01R31/396

Abstract: A used secondary battery module management system server manages a manufacture of a battery assembly. The server stores, in a memory, a correspondence relationship of each of secondary battery modules among identification information, ranks, and status information. The server extracts an available rank from the ranks in response to a rebuilding request for the battery assembly. The available rank is a rank in which the number of the secondary battery modules having the status information indicating that the secondary battery modules are available is equal to or larger than the number of the secondary battery modules required to constitute the battery assembly. The server receives, from an external terminal, the identification information on each of selection secondary battery modules having an identical rank.

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.

公开(公告)号：US20200327333A1

公开(公告)日：2020-10-15

申请号：US16915419

申请日：2020-06-29

Applicant: DENSO CORPORATION

Inventor： Akira KUNITSU ,  Hiroyasu SUZUKI ,  Masato HAYASHI

IPC: G06K9/00 ,  G06K9/68 ,  G06T7/70

Abstract: In an installation position information providing apparatus, specific two parts in a vehicle or in a vicinity of the vehicle and a floor surface on which the vehicle is mounted are recognized from a video that is captured, an installation position of an adjustment facility in the video is calculated based on the two parts and the floor surface that are recognized, and an installation position object indicative of the installation position is displayed at the installation position that is calculated in a superimposed manner, in the video that is displayed.

公开(公告)号：US20250155515A1

公开(公告)日：2025-05-15

申请号：US19023565

申请日：2025-01-16

Applicant: DENSO CORPORATION

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

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

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：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：US20210339653A1

公开(公告)日：2021-11-04

申请号：US17377692

申请日：2021-07-16

Applicant: DENSO CORPORATION

Inventor： Nobuo YAMAMOTO ,  Shuhei YOSHIDA ,  Katsuki HAYASHI ,  Takehiko YAMAKI ,  Hiroyasu SUZUKI ,  Yuya MINABE

IPC: B60L58/22 ,  G01R31/392 ,  G01R31/396 ,  G01R31/367 ,  H01M10/48

Abstract: In a system for setting power supply of reusable secondary cell modules, a degradation level estimation unit estimates a degradation level of a cell-module performance of each of a plurality of secondary cell modules, based on: the history information items about the respective the secondary cell modules acquired by a history information collection unit; and the cell-module performances of the respective secondary cell modules collected by a cell performance collection unit. A suppliable quantity prediction unit predicts a suppliable quantity of power of each of the plurality of secondary cell modules in accordance with the degradation level of the cell-module performance of a corresponding one of the plurality of secondary cell modules. A supply balance setting unit sets a power supply balance among the plurality of secondary cell modules based on the suppliable quantity of power of each of the plurality of secondary cell modules predicted by the prediction unit.