公开(公告)号：US12105153B2

公开(公告)日：2024-10-01

申请号：US17896179

申请日：2022-08-26

Applicant: DENSO CORPORATION

Inventor： Takuya Ohata ,  Shogo Shigemori ,  Tatsuhiro Numata ,  Tetsuya Watanabe ,  Masaki Uchiyama ,  Taisuke Kurachi

IPC: G01R31/3842 ,  G01R31/371 ,  G01R31/389 ,  G01R31/392 ,  H02J7/00

CPC classification number: G01R31/3842 ,  G01R31/371 ,  G01R31/389 ,  G01R31/392 ,  H02J7/00032 ,  H02J7/0047

Abstract: A battery management system includes a monitoring device and a controller. The monitoring device is arranged in a housing accommodating a battery, 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 execute a predetermined process based on the battery monitoring information. The controller transmits a request for battery monitoring information to the monitoring device. The monitoring device transmits the battery monitoring information to the controller in response to the request. The controller determines whether missing of the battery monitoring information has occurred based on a correlation between the battery monitoring information acquired from the monitoring device via wireless communication and relationship information held by the controller related to the battery monitoring information.

公开(公告)号：US10553859B2

公开(公告)日：2020-02-04

申请号：US15133250

申请日：2016-04-20

Applicant: DENSO CORPORATION

Inventor： Shuhei Yoshida ,  Koji Ohira ,  Masaki Uchiyama ,  Daisuke Shibata

IPC: H01M4/36 ,  H01M4/48 ,  H01M4/485 ,  H01M4/505 ,  H01M4/52 ,  H01M4/525 ,  H01M4/54 ,  H01M4/56 ,  H01M4/57 ,  H01M4/62 ,  H01M10/0525

Abstract: An electrode active material for a nonaqueous electrolyte secondary battery includes: a core part including at least one of an inorganic oxide and a carbon-composite inorganic composite oxide; and a shell part for carbon coating on the core part. The electrode active material has a specific surface area of 6.0 m2/g or more. The electrode active material has a moisture content of 400 ppm or less, which is measured by a Karl Fischer method such that the electrode active material is heated in a heat-evaporating manner, and continuously maintained at 250° C. for 40 minutes without exposing to an atmosphere after the electrode active material is exposed to the atmosphere to absorb moisture to be saturated.

公开(公告)号：US10374269B2

公开(公告)日：2019-08-06

申请号：US14796254

申请日：2015-07-10

Applicant: DENSO CORPORATION

Inventor： Masaki Uchiyama ,  Ryuichiro Shinkai ,  Yoshimitsu Inoue ,  Takahiro Souki ,  Kouhei Yamamoto ,  Kouhei Yamaguchi ,  Tetsuya Goto

IPC: H01M10/613 ,  H01M10/6568 ,  H01M10/6563 ,  H01M10/6555 ,  H01M10/6552 ,  H01M10/653 ,  H01M10/647 ,  H01M2/10 ,  H01M10/625

Abstract: A battery pack includes a plurality of battery stacks integrated by stacking a plurality of unit batteries, a fluid passage where fluid flows for cooling the unit batteries disposed between the battery stacks, a blower for circulating the fluid in the fluid passage, and a plurality of heat conducting plates. The heat conducting plate is thermally connected to an outer casing of the unit batteries constituting the battery stacks adjacent to each other, and disposed so as to constitute a plurality of cooled portions of which parts thereof exist in the fluid passage. The battery pack includes a passage forming member that demarcates the fluid passage as an independent passage from the area near the outer casing of the unit battery, and includes a partition wall for supporting the heat conducting plate.

公开(公告)号：US12296641B2

公开(公告)日：2025-05-13

申请号：US17691270

申请日：2022-03-10

Applicant: DENSO CORPORATION

Inventor： Masakazu Morimoto ,  Yasuhiro Mizuno ,  Masaki Uchiyama ,  Yuki Sugiyama

IPC: B60H1/00 ,  F25B41/40 ,  F25B41/42

Abstract: A plurality of components of a refrigeration cycle are connected to a connection module. The connection module includes a body having a refrigerant flow path that constitutes a part of a refrigerant flow path in the refrigeration cycle. The refrigerant flow path includes a high-temperature-side flow path and a low-temperature-side flow path. The high-temperature-side flow path has a connection port to which a high-temperature-side component of the plurality of components, through which a high-pressure refrigerant of the refrigeration cycle flows, is connectable. The low-temperature-side flow path has a connection port to which a low-temperature-side component of the plurality of components, through which a refrigerant having a lower temperature than the high-pressure refrigerant flows, is connectable.

公开(公告)号：US20250028002A1

公开(公告)日：2025-01-23

申请号：US18908135

申请日：2024-10-07

Applicant: DENSO CORPORATION

Inventor： Yuki HORI ,  Masaki Uchiyama ,  Taisuke Kurachi

IPC: G01R31/3842 ,  G01R31/378 ,  G01R31/392 ,  H01M10/0525 ,  H01M10/42

Abstract: A battery remaining quantity estimation apparatus estimates a remaining quantity of a secondary battery based on a charging parameter correlated with charging time of the secondary battery and a rate of change of a voltage of the secondary battery relative to the charging parameter. This estimation apparatus determines whether a predetermined condition is met. The predetermined condition is that an amount of change in the charging parameter from the start of charging of the secondary battery until when the rate of change of the voltage becomes a maximum value is equal to or less than a predetermined amount of change. In response to determining that the predetermined condition is met, the estimation apparatus estimates a remaining quantity corresponding to a portion between two minimum values of the rate of change of the voltage during charging of the secondary battery as the remaining quantity of the secondary battery.

公开(公告)号：US10790556B2

公开(公告)日：2020-09-29

申请号：US16245834

申请日：2019-01-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Kiyohito Machida ,  Yoshihiro Uchida ,  Masaki Uchiyama

IPC: H01M10/42 ,  H01M10/48 ,  H01M10/613 ,  G01R19/02 ,  G01R31/3842 ,  H01M10/6563

Abstract: An ECU performs a process including the steps of: acquiring a lowest temperature TBmin and a temperature TC of cooling air; acquiring a fan airflow volume; setting a cooling coefficient; calculating a resistance value Rtmin; calculating a root-mean-square value of a current; setting TBoffset1; calculating a resistance value Rtmax; calculating a temperature index Ftmax; calculating a temperature index Ftmin; calculating an evaluation function ΔF; calculating a maximum current correction gain G; and calculating a maximum current value Imax.

公开(公告)号：US11251473B2

公开(公告)日：2022-02-15

申请号：US16768376

申请日：2018-11-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION

Inventor： Kiyohito Machida ,  Hiroki Tashiro ,  Yoshihiro Uchida ,  Nobuyuki Tanaka ,  Masaki Uchiyama

IPC: H01M10/44 ,  G01R31/389 ,  B60L58/12 ,  B60L58/21 ,  H01M10/42 ,  H01M10/48

Abstract: A secondary battery system includes an assembled battery that includes a plurality of blocks that are connected in series to one another. Each of the plurality of the blocks includes same number of cells that are connected in parallel to one another. A control device is configured to calculate an internal resistance ratio and a protection current. The internal resistance ratio is a value obtained by dividing the higher one of internal resistances by the lower one of the internal resistances of two of the plurality of the blocks. The protection current is a value obtained by multiplying the internal resistance ratio by a current value of the assembled battery detected by a current sensor. The control device is configured to perform the charge-discharge control based on the protection current.

公开(公告)号：US09882406B2

公开(公告)日：2018-01-30

申请号：US14828727

申请日：2015-08-18

Applicant: DENSO CORPORATION

Inventor： Yoshinori Satou ,  Masaki Uchiyama ,  Nobuo Yamamoto ,  Koji Ohira

IPC: H02J7/04 ,  H02J7/16 ,  H02J7/00 ,  H01M10/0525 ,  H01M10/46 ,  H01M10/44

CPC classification number: H02J7/007 ,  H01M10/0525 ,  H01M10/44 ,  H01M10/46

Abstract: A lithium-ion battery includes a cathode active material of the Olivine-type crystal structure. The lithium-ion battery is charged under control of a charging control apparatus, which performs a charging process for charging up to a target voltage according to a constant-current and constant-voltage charging method, a negative-electrode potential evaluation process for evaluating a potential change quantity at the negative-electrode, and a voltage setting process for setting the target voltage to a lower voltage based on the potential change quantity of the negative-electrode evaluated by the negative-electrode potential evaluation process. The charging voltage is changed from the target voltage to the set voltage even when the negative-electrode potential changes with an increase in the number of charging and aging deterioration. Thus a positive-electrode potential is suppressed from rising because of less susceptibility to the increase in number of charging and aging deterioration.

公开(公告)号：US12240338B2

公开(公告)日：2025-03-04

申请号：US17994470

申请日：2022-11-28

Applicant: DENSO CORPORATION

Inventor： Masaki Uchiyama ,  Daisuke Kuroda ,  Atsushi Fukaya ,  Keiya Tani

IPC: B60L50/60 ,  H01M10/42 ,  H01M10/46 ,  H01M10/48 ,  H01M50/51 ,  H02J7/00 ,  H02M1/00 ,  H02M1/08 ,  H02M7/5387 ,  H02P27/06 ,  H01M10/0525 ,  H02J7/34

Abstract: The present disclosure includes an inverter connected to a power supply unit via a positive electrode side electrical path and a negative electrode side electrical path and including switching elements, a rotary electric machine including windings connected to each other at a neutral point and inputting and outputting power from and to the power supply unit via the inverter, a connection path electrically connecting an intermediate point between the storage batteries of the power supply unit to the neutral point of the windings, and a device including a first terminal and a second terminal enabling energization between the power supply unit and the device. The first terminal is connected to the connection path, and the second terminal is connected to at least one of the positive electrode side electrical path and the negative electrode side electrical path.

公开(公告)号：US12117494B2

公开(公告)日：2024-10-15

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 ,  G01R31/3842 ,  G01R31/392 ,  G01R31/396 ,  H02J7/00

CPC classification number: G01R31/371 ,  G01R31/3842 ,  G01R31/392 ,  G01R31/396 ,  H02J7/00032 ,  H02J7/0048 ,  H02J7/005

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.