公开(公告)号：US20240077539A1

公开(公告)日：2024-03-07

申请号：US18455063

申请日：2023-08-24

Applicant: DENSO CORPORATION

Inventor： Shogo SHIGEMORI ,  Tatsuhiro NUMATA ,  Tetsuya WATANABE

IPC: G01R31/371 ,  G01R31/387 ,  H01M10/42

CPC classification number: G01R31/371 ,  G01R31/387 ,  H01M10/425 ,  H01M2010/4271 ,  H01M2010/4278

Abstract: In a technique for monitoring a state of a battery, battery monitoring information is acquired via wireless communication from monitoring devices that acquire the battery monitoring information from the battery. A predetermined process is executed based on the battery monitoring information. Instructions are transmitted to the monitoring devices via unicast communication and broadcast communication within a communication cycle. The instructions include an instruction transmitted via the unicast communication to each of the monitoring devices about acquisition of the battery monitoring information, and an instruction transmitted via the broadcast communication to the monitoring devices about a timing of acquisition of the battery monitoring information.

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.

公开(公告)号：US20220305951A1

公开(公告)日：2022-09-29

申请号：US17699419

申请日：2022-03-21

Applicant: DENSO CORPORATION

Inventor： Shogo SHIGEMORI ,  Takeshi IIDA ,  Tatsuhiro NUMATA

IPC: B60L58/12 ,  H02J7/00

Abstract: A battery management system in a vehicle includes: monitoring devices arranged in a housing accommodating battery; and a control device arranged in the housing, acquiring battery information from the monitoring devices, and performing a predetermined process. The control device stores, in advance as learning data, data that correlates with an electric field intensity in the housing for frequency channels that are usable to transmit and receive data to and from each of the monitoring devices performing wireless communication. The control device determines a target frequency channel of the frequency channel hopping based on the learning data.

公开(公告)号：US20220266714A1

公开(公告)日：2022-08-25

申请号：US17674116

申请日：2022-02-17

Applicant: DENSO CORPORATION

Inventor： Shogo SHIGEMORI ,  Takeshi IIDA ,  Tatsuhiro NUMATA

IPC: B60L58/12 ,  H01M10/42 ,  H01M10/48 ,  G01R31/382

Abstract: A battery management system includes monitoring devices arranged in a housing that houses batteries and a control device. The monitoring device includes (i) a monitoring IC capable of acquiring battery information and (ii) a wireless IC. At a start-up time of the plurality of monitoring devices, each of the wireless ICs performs an advertising operation in a cyclic advertising event for establishing a connection of wireless communication between the plurality of monitoring devices and the control device, and the control device performs a scan operation. The wireless IC of each of the two or more monitoring devices has, respectively, an event management unit that manages a generation cycle of the adverting event, for performing the advertising operation at respectively different timings.