公开(公告)号：US20230411707A1

公开(公告)日：2023-12-21

申请号：US18239803

申请日：2023-08-30

Applicant: DENSO CORPORATION

Inventor： Kousuke AOKI ,  Tatsuhiro NUMATA

IPC: H01M10/42 ,  H01Q1/24 ,  H01M50/204 ,  H01Q9/04 ,  H01Q1/22 ,  H01M10/48 ,  H01M50/233 ,  H01M50/287

CPC classification number: H01M10/425 ,  H01Q1/243 ,  H01M50/204 ,  H01Q9/0407 ,  H01Q1/2291 ,  H01M10/482 ,  H01M50/233 ,  H01M50/287 ,  H01M2010/4278 ,  H01M2010/4271

Abstract: In a battery pack having a housing, battery modules composed of a plurality of battery cells, acquisition units equipped with slave antennas, and a monitoring device equipped with a parent antenna, the monitoring device and the acquisition units perform wireless communication to obtain battery information such as a state of change of each battery cell. A radio wave absorption part is formed on at least one of surfaces of the housing and an inside part of the housing. The radio wave absorption part absorbs a part of radio waves emitted from the parent antenna and the slave antennas.

公开(公告)号：US20220328890A1

公开(公告)日：2022-10-13

申请号：US17849330

申请日：2022-06-24

Applicant: DENSO CORPORATION

Inventor： Kousuke AOKI ,  Tatsuhiro NUMATA

IPC: H01M10/48 ,  H01M50/516 ,  H01M50/296

Abstract: A battery module includes: a plurality of assembled batteries; a plurality of individual detection units configured to individually detect a physical quantity of each of the plurality of assembled batteries; a plurality of individual communication units configured to output a detection result of each of the plurality of individual detection units as wireless signal; a monitoring unit configured to wirelessly communicate with each of the plurality of individual communication units; and an electromagnetic reflection housing having a storage space to store the plurality of assembled batteries, the plurality of individual detection units, the plurality of individual communication units, and the monitoring unit.

公开(公告)号：US20210218071A1

公开(公告)日：2021-07-15

申请号：US17143613

申请日：2021-01-07

Applicant: DENSO CORPORATION

Inventor： Kousuke AOKI ,  Tatsuhiro NUMATA

IPC: H01M10/42 ,  H01Q1/24 ,  H01Q1/22 ,  H01Q9/04 ,  H01M50/204

Abstract: In a battery pack having a housing, battery modules composed of a plurality of battery cells, acquisition units equipped with slave antennas, and a monitoring device equipped with a parent antenna, the monitoring device and the acquisition units perform wireless communication to obtain battery information such as a state of change of each battery cell. A radio wave absorption part is formed on at least one of surfaces of the housing and an inside part of the housing. The radio wave absorption part absorbs a part of radio waves emitted from the parent antenna and the slave antennas.

公开(公告)号：US20240322269A1

公开(公告)日：2024-09-26

申请号：US18735653

申请日：2024-06-06

Applicant: DENSO CORPORATION

Inventor： Kousuke AOKI ,  Tatsuhiro NUMATA

IPC: H01M10/42 ,  H01M10/48

CPC classification number: H01M10/4257 ,  H01M10/4207 ,  H01M10/425 ,  H01M10/482 ,  H01M2010/4271 ,  H01M2010/4278

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：US20230402762A1

公开(公告)日：2023-12-14

申请号：US18133787

申请日：2023-04-12

Applicant: DENSO TEN Limited ,  DENSO CORPORATION

Inventor： Hiroyuki FUJI ,  Naoki NAKAJIMA ,  Yuto HONDA ,  Tatsuhiro NUMATA

IPC: H01Q13/08 ,  H01Q3/24

CPC classification number: H01Q13/085 ,  H01Q3/247

Abstract: The wireless communication apparatus includes a communicator that performs at least one of transmission of signals to an antenna and reception of the signals from the antenna through a microstrip line. The microstrip line is formed with a first stub provided on the side of the communicator and a second stub provided on the side of the antenna, which stubs have resonant characteristics.

公开(公告)号：US20220367984A1

公开(公告)日：2022-11-17

申请号：US17875560

申请日：2022-07-28

Applicant: DENSO CORPORATION

Inventor： Tatsuhiro NUMATA ,  Shingo KAWAHARA ,  Kousuke AOKI ,  Takahiro JYO

IPC: H01M50/528 ,  H01Q1/24

Abstract: A battery pack includes: a plurality of assembled batteries disposed in a housing; respective acquisition devices that acquire battery information from the assembled battery corresponding thereto; and a monitor that wirelessly communicates with the respective acquisition devices. The monitor includes a main antenna, and the respective acquisition devices include respective sub-antennas. The respective assembled batteries include respective projections formed thereon, the respective projections including respective conductive connectors configured to electrically connect the battery cells to each other. Hereinafter, the direction in which the respective projections project s defined as a projection direction. The respective sub-antennas are disposed. in the housing, at least a part of the respective sub-antennas being positioned farther in the projection direction than a projection-direction end of the respective conductive connectors is. A direct wave emitted from the main antenna reaches the respective sub-antennas and is thus received without being blocked by the respective conductive connectors.

公开(公告)号：US20220320612A1

公开(公告)日：2022-10-06

申请号：US17844946

申请日：2022-06-21

Applicant: DENSO CORPORATION

Inventor： Tatsuhiro NUMATA ,  Shunichi KUBO

IPC: H01M10/48 ,  G01R31/36

Abstract: In a battery monitoring system including a plurality of battery modules each including one or more cells, the battery modules are connected in series to each other. The battery monitoring system monitors the state of each cell based on the voltage value of the cell and the current value of the battery modules. A current detection unit detects the current value. Each voltage detection unit is associated with the corresponding one of the battery modules and detects the voltage value. Each slave unit is associated with the corresponding one of the battery modules, and wirelessly transmits information including synchronous current and voltage values detected by the current detection unit and the voltage detection unit. A master unit receives the information transmitted from the slave units. A central monitoring unit receives the information received by the master unit.

公开(公告)号：US20240114580A1

公开(公告)日：2024-04-04

申请号：US18533624

申请日：2023-12-08

Applicant: DENSO CORPORATION

Inventor： Tatsuhiro NUMATA

IPC: H04W76/19 ,  G01R31/3835 ,  H01M10/48 ,  H04W4/40

CPC classification number: H04W76/19 ,  G01R31/3835 ,  H01M10/48 ,  H04W4/40

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：US20230393207A1

公开(公告)日：2023-12-07

申请号：US18237637

申请日：2023-08-24

Applicant: DENSO CORPORATION

Inventor： Akihiko ITO ,  Tatsuhiro NUMATA

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

CPC classification number: 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：US20230065084A1

公开(公告)日：2023-03-02

申请号：US17896203

申请日：2022-08-26

Applicant: DENSO CORPORATION

Inventor： Shusaku NAKATA ,  Shogo SHIGEMORI ,  Tatsuhiro NUMATA ,  Tetsuya WATANABE

IPC: H01M10/42 ,  B60L58/10 ,  G01R31/371 ,  G01R31/392 ,  G01R31/3842 ,  H01M10/48 ,  H04W76/19 ,  H04W76/15 ,  H04W76/30 ,  H02J7/00

Abstract: A battery management system includes monitoring devices arranged in a housing accommodating a battery. The monitoring devices monitor the battery and acquire battery monitoring information. The controller performs wireless communication with each of the monitoring devices via a wireless communication connection. The controller transmits a disconnection instruction to each of the monitoring devices. Each of the monitoring devices periodically executes a requesting operation after disconnection of the wireless communication connection. The controller accepts the requesting operation to establish the wireless communication connection. The controller and each of the monitoring devices perform a periodic communication of the battery monitoring information via the established wireless communication connection. Each of the monitoring devices determines start timing of the requesting operation based on reception timing of the disconnection instruction so that at least some of timings of requesting operations of the monitoring devices do not overlap with each other.