公开(公告)号：US20220131389A1

公开(公告)日：2022-04-28

申请号：US17502315

申请日：2021-10-15

Applicant: DENSO CORPORATION

Inventor： Shogo SHIGEMORI ,  Shunichi KUBO ,  Takeshi IIDA ,  Yukihiro TOMONAGA ,  Taisuke KURACHI ,  Shozo SUZUKI ,  Shinya KATO

IPC: H02J7/00 ,  H01M10/48 ,  G01R31/392 ,  G01R31/3842 ,  H01M10/42

Abstract: A battery management device is configured to set a limited measurement range that limits a range for measuring a voltage of each of a plurality of batteries for a vehicle. The battery management device is configured to measure the voltage of each of the plurality of batteries within the limited measurement range.

公开(公告)号：US20240030723A1

公开(公告)日：2024-01-25

申请号：US18375739

申请日：2023-10-02

Applicant: DENSO CORPORATION

Inventor： Taisuke KURACHI ,  Masaki UCHIYAMA

IPC: H02J7/00

CPC classification number: H02J7/0016 ,  H02J7/005 ,  H02J7/007182 ,  H02J7/007194

Abstract: An equalization device performs equalization of amounts of charge of cell batteries in a battery pack. The device includes a state determination unit that determines whether it is in a predetermined charging state that includes at least one of a state in which the battery pack is subjected to constant current charge and a state in which the battery pack is subjected to constant power charge and does not include a state in which the battery pack is subjected to constant voltage charge, a charging time variation determination unit that determines whether a variation voltage indicating variation of a voltage of each of the cell batteries is higher than a predetermined charging time determination voltage, and a charging time equalization unit that performs the equalization if it is determined that it is in the predetermined charging state and that the variation voltage is higher than the charging time determination voltage.

公开(公告)号：US20250116716A1

公开(公告)日：2025-04-10

申请号：US18984097

申请日：2024-12-17

Applicant: DENSO CORPORATION

Inventor： Yuki HORI ,  Masaki UCHIYAMA ,  Taisuke KURACHI

IPC: G01R31/388

Abstract: A capacity estimation device that estimates a capacity of a power storage unit at a time of charging the power storage unit includes: a control unit that reduces an average current in a predetermined current restriction section after a start of charging the power storage unit, the average current indicating an average value per unit time of a charging current flowing in the power storage unit; and an estimation unit that estimates the capacity based on a voltage change rate of the power storage unit after or within the current restriction section.

公开(公告)号：US20220250499A1

公开(公告)日：2022-08-11

申请号：US17729630

申请日：2022-04-26

Applicant: DENSO CORPORATION

Inventor： Yoshitomo TAKEUCHI ,  Kousuke BABA ,  Yoshihiro SATO ,  Taisuke KURACHI

IPC: B60L53/62 ,  B60L15/20 ,  B60L7/10 ,  B60L58/16

Abstract: A control apparatus for a vehicle determines whether to perform either of a first control and a second control. In the first control, power is transferred between a power supply facility outside a vehicle and a power storage apparatus during stopping of the vehicle. In the second control, power is transferred between a rotating electric machine and the power storage apparatus through an inverter during traveling of the vehicle. In response to the first control, the apparatus performs control of the inverter to set a controlled variable to be equal to or less than a first limit value. In response to the second control, the apparatus performs control of the inverter to set a controlled variable to be equal to or less than a second limit value. The apparatus sets at least either of the first and second limit values to a value suppressing decrease in drivability of the vehicle.

公开(公告)号：US20250058675A1

公开(公告)日：2025-02-20

申请号：US18938850

申请日：2024-11-06

Applicant: DENSO CORPORATION

Inventor： Tatsuhiro NUMATA ,  Masaki UCHIYAMA ,  Taisuke KURACHI ,  Tetsuya WATANABE

IPC: B60L58/18 ,  B60L50/64 ,  B60L53/80 ,  B60L58/12

Abstract: A battery unit configured to be exchangeable with respect to an external load, in which the battery unit includes: a battery member capable of supplying power to the external load in a state where the battery unit is connected to the external load; a battery load connected to the battery member, a measurement unit that measures at least either a current flowing through the battery load or a voltage applied to the battery load; and a control unit configured to operate with the battery member as a power source in a state where the battery unit is removed from the external load, cause a current to flow to the battery load from the battery member at a predetermined timing and acquire a measurement result measured by the measurement unit at a time when the current is caused to flow.

公开(公告)号：US20230411708A1

公开(公告)日：2023-12-21

申请号：US18365359

申请日：2023-08-04

Applicant: DENSO CORPORATION

Inventor： Yoshihiro SATO ,  Taisuke KURACHI ,  Shingo KAWAHARA

IPC: H01M10/42 ,  G01R31/367 ,  G01R31/36 ,  G01R31/388 ,  B60L58/10

CPC classification number: H01M10/425 ,  G01R31/367 ,  G01R31/3648 ,  H01M2220/20 ,  B60L58/10 ,  H01M2010/4278 ,  H01M2010/4271 ,  G01R31/388

Abstract: A battery device includes: a storage unit that stores battery information including a closed circuit voltage of a plurality of battery cells electrically connected to each other and a change amount in the closed circuit voltage; a setting unit that sets an acquisition range of the closed circuit voltage based on the battery information; a detection unit that detects the closed circuit voltage; and a conversion unit that converts the closed circuit voltage detected by the detection unit into a digital signal within the acquisition range set by the setting unit.

公开(公告)号：US20230068288A1

公开(公告)日：2023-03-02

申请号：US17896261

申请日：2022-08-26

Applicant: DENSO CORPORATION

Inventor： Takuma NAKAGAWA ,  Shogo SHIGEMORI ,  Tatsuhiro NUMATA ,  Tetsuya WATANABE ,  Masaki UCHIYAMA ,  Taisuke KURACHI

IPC: G01R31/371 ,  H02J7/00 ,  G01R31/3842 ,  G01R31/392 ,  G01R31/396

Abstract: A battery management system includes a monitoring device and a controller. The monitoring device is arranged in a housing accommodating a battery. The monitoring device monitors the battery and acquires battery monitoring information that includes information indicating a state of the battery. The controller performs wireless communication with the monitoring device and executes a predetermined process based on the battery monitoring information. The monitoring device holds imperfect information that is battery monitoring information indicating failure of data transmission/reception between the monitoring device and the controller. The monitoring device retransmits information corresponding to the imperfect information from next time the battery monitoring information is transmitted.