公开(公告)号：US20250055049A1

公开(公告)日：2025-02-13

申请号：US18930061

申请日：2024-10-29

Applicant: DENSO CORPORATION

Inventor： Kousuke AOKI ,  Tatsuhiro NUMATA

IPC: H01M10/42 ,  H01M10/48

Abstract: A power system includes a battery module and a battery ECU. The battery module includes multiple battery stacks. Each of multiple battery stacks includes multiple battery cells, multiple detectors which independently detect physical values of the multiple battery cells, respectively, and multiple individual communicators which wirelessly output detection results of the multiple detectors. Each of the multiple individual communicators communicates a radio signal wirelessly to and from a general monitor. The multiple battery stacks and the general monitor are accommodated in a storage space in a housing having electromagnetic shielding performance. A shield is also accommodated in the storage space while facing a communication hole formed on the housing.

公开(公告)号：US20240304080A1

公开(公告)日：2024-09-12

申请号：US18600893

申请日：2024-03-11

Applicant: DENSO CORPORATION

Inventor： Shogo SHIGEMORI ,  Takeshi IIDA ,  Tatsuhiro NUMATA ,  Tetsuya WATANABE ,  Hironori TSUCHIYA ,  Takuya HARADA ,  Kenji YAMADA

IPC: G08C17/02 ,  G01R31/3835

CPC classification number: G08C17/02 ,  G01R31/3835

Abstract: A control apparatus performing a wireless communication with a supervisory apparatus that acquires battery information indicating a battery state and transmits the acquired battery information, and controlling the supervisory apparatus based on the battery information. The control apparatus includes a wireless communication unit that wirelessly transmits a plurality of commands which are combined to the supervisory apparatus corresponding to a control period set for a control of monitoring the battery state.

公开(公告)号：US20240272226A1

公开(公告)日：2024-08-15

申请号：US18642185

申请日：2024-04-22

Applicant: DENSO CORPORATION

Inventor： Tatsuhiro NUMATA

IPC: G01R31/371 ,  B60L58/12 ,  G01R31/3842

CPC classification number: G01R31/371 ,  B60L58/12 ,  G01R31/3842 ,  B60L2240/545

Abstract: A battery monitoring system includes a battery, a battery monitoring device that monitors a state of the battery, and a battery control device that performs wireless communication with the battery monitoring device to acquire battery information representing results of the monitoring by the battery monitoring device and execute various controls. Moreover, the battery monitoring device is configured to execute, while executing a first process between it and the battery control device via the wireless communication, a second process that is different from the first process.

公开(公告)号：US20240142539A1

公开(公告)日：2024-05-02

申请号：US18472456

申请日：2023-09-22

Applicant: DENSO CORPORATION

Inventor： Shogo SHIGEMORI ,  Tatsuhiro NUMATA ,  Tetsuya WATANABE

IPC: G01R31/396 ,  B60L58/12 ,  B60L58/16 ,  B60L58/18 ,  G01R31/00 ,  H01M10/42

CPC classification number: G01R31/396 ,  B60L58/12 ,  B60L58/16 ,  B60L58/18 ,  G01R31/006 ,  H01M10/4257 ,  H01M2010/4278

Abstract: A battery monitoring includes a plurality of monitoring units and a wireless transmission unit. The plurality of monitoring units is configured to acquire battery-related information including at least information indicating a state of a battery. The wireless transmission unit is configured to wirelessly transmit the battery-related information acquired by the plurality of monitoring units to a control device.

公开(公告)号：US20230064107A1

公开(公告)日：2023-03-02

申请号：US17896200

申请日：2022-08-26

Applicant: DENSO CORPORATION

Inventor： Shogo SHIGEMORI ,  Tatsuhiro NUMATA ,  Tetsuya WATANABE

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

Abstract: A monitoring system includes monitoring devices provided in a monitored device, and a controller that wirelessly communicates with the monitoring devices to acquire monitoring information. In an operating state of the monitored device, the controller and the monitoring devices establish individual connections in which the controller acting as a communication master performs wireless communication with each of the monitoring devices acting as communication slaves. In a non-operating state of the monitored device, the controller and the monitoring devices maintain communication between the controller and the monitoring devices by establishing a sequential connection. In the sequential connection, the controller acting as a communication master performs wireless communication with one of the monitoring devices acting as a communication slave, and one of the monitoring devices, in sequence, acting as a communication master performs wireless communication with another one of the monitoring devices acting as a communication slave.

公开(公告)号：US20230061834A1

公开(公告)日：2023-03-02

申请号：US17896217

申请日：2022-08-26

Applicant: DENSO CORPORATION

Inventor： Shogo SHIGEMORI ,  Tatsuhiro NUMATA ,  Tetsuya WATANABE

IPC: H02J7/00 ,  H01M10/42

Abstract: A monitoring system includes monitoring devices and a controller configured to wirelessly communicate with the monitoring devices to acquire monitoring information of a monitored device. In a non-operating state of the monitored device, the monitoring devices establish communication connections between the monitoring devices and periodically perform communication through the communication connections. One monitoring device acts as a communication master and another one monitoring device acts as a communication slave in each of the communication connections. Each of the monitoring devices acts as a communication master for another of the monitoring devices and also as a communication slave for another of the monitoring devices. In the non-operating state of the monitored device, the controller disconnects a communication connection between the controller and each of the monitoring devices, or performs communication with at least one of the monitoring devices less frequently than the communication between the monitoring devices.

公开(公告)号：US20220340041A1

公开(公告)日：2022-10-27

申请号：US17723906

申请日：2022-04-19

Applicant: DENSO CORPORATION

Inventor： Shogo SHIGEMORI ,  Takeshi IIDA ,  Tatsuhiro NUMATA

IPC: B60L58/12 ,  H02J7/00 ,  G01R31/396 ,  H01M10/42 ,  B60L58/16

Abstract: A battery management system includes multiple monitoring devices and a control device. The monitoring devices are disposed in a housing that accommodates a battery of a vehicle and monitors battery information indicating a state of the battery. The control device performs wireless communication with each of the monitoring devices and acquires data including the battery information to execute a predetermined process. The control device sets a cycle in which the multiple monitoring devices make a round in order to perform wireless communication with each of the monitoring devices, and is capable of adjusting the cycle.

公开(公告)号：US20220236330A1

公开(公告)日：2022-07-28

申请号：US17720768

申请日：2022-04-14

Applicant: DENSO CORPORATION

Inventor： Akihiko ITO ,  Tatsuhiro NUMATA

IPC: G01R31/371 ,  H04W76/10 ,  B60L58/18 ,  B60L58/12 ,  G01R31/3835

Abstract: A battery monitoring apparatus includes a battery ECU, satellite devices each of which measures the voltage at a battery cell in response to a command signal from the battery ECU, and a wireless module which achieves a wireless communication between the battery ECU and each of the satellite devices after a wireless connection between the battery ECU and each of the satellite devices is completed. When receiving a start signal outputted before a start switch for a drive power source of the vehicle is turned on, the wireless module is activated to start the wireless connection between the battery ECU and each of the satellite devices. This establishes and completes the wireless connections faster than when the wireless module is activated simultaneously with turning on of the start switch for the drive power source. This achieves quick monitoring of the state of the battery cells.

公开(公告)号：US20210410222A1

公开(公告)日：2021-12-30

申请号：US17473584

申请日：2021-09-13

Applicant: DENSO CORPORATION

Inventor： Tatsuhiro NUMATA

IPC: H04W76/19 ,  H04W4/40 ,  G01R31/3835

Abstract: A battery monitoring apparatus includes a battery ECU, a plurality of voltage monitors, and a wireless device. The wireless device contains a main unit disposed to the battery ECU and sub units disposed to the corresponding voltage monitors. In response to establishment of communication connection of wireless communication between the main unit and the sub units, the main unit wirelessly transmits a command by the battery ECU to the sub units, and the sub units wirelessly transmit voltage information detected by the voltage monitors to the main unit. The wireless device acquires voltage monitor information prior to establishment of initial communication connection, and establishes communication connection based on the voltage monitor information. The battery ECU or each voltage monitor is provided with a storage unit configured to store voltage monitor information. At re-connection, the wireless device performs communication re-connection using the voltage monitor information stored in the storage unit.

公开(公告)号：US20210210803A1

公开(公告)日：2021-07-08

申请号：US17135199

申请日：2020-12-28

Applicant: DENSO CORPORATION

Inventor： Kousuke AOKI ,  Tatsuhiro NUMATA

IPC: H01M10/48 ,  H01Q1/24 ,  H01M50/204 ,  H01M10/42

Abstract: A battery pack includes a housing, a plurality of assembled batteries disposed in the housing, obtaining units arranged one for each of the assembled batteries in the housing, and the monitoring device equipped with a master antenna. The obtaining units obtain battery information about the assembled batteries and transmit it to the master antenna of the monitoring device through wireless communication using slave antennas. The master antenna and/or the slave antennas are each implemented by a directional antenna which emits a radio wave to be higher in power in a given directional direction than in a given undirectional direction. This minimizes a risk of a communication failure arising from radio wave interference.