公开(公告)号：US20200303787A1

公开(公告)日：2020-09-24

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 ,  B60L58/12 ,  B60L58/21 ,  H01M10/42 ,  H01M10/48 ,  G01R31/389

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：US20190221898A1

公开(公告)日：2019-07-18

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

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：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：US20230333173A1

公开(公告)日：2023-10-19

申请号：US18211817

申请日：2023-06-20

Applicant: DENSO CORPORATION

Inventor： Yuuki HORI ,  Masaki UCHIYAMA

IPC: G01R31/389 ,  G01R35/00 ,  H02J7/00 ,  H01M10/42

CPC classification number: G01R31/389 ,  G01R35/005 ,  H02J7/0047 ,  H01M10/4285

Abstract: A battery monitoring apparatus is provided for a secondary battery that produces a change in reaction heat at a predetermined capacity when a storage capacity changes in accompaniment with a current conduction. The battery monitoring apparatus includes: an acquiring unit that acquires, during the current conduction, an impedance change of the secondary battery; and a capacity determination unit that determines, based on the impedance change acquired by the acquiring unit, that the storage capacity of the secondary battery is the predetermined capacity.

公开(公告)号：US20230086550A1

公开(公告)日：2023-03-23

申请号：US17994470

申请日：2022-11-28

Applicant: DENSO CORPORATION

Inventor： Masaki UCHIYAMA ,  Daisuke KURODA ,  Atsushi FUKAYA ,  Keiya TANI

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

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：US20230016310A1

公开(公告)日：2023-01-19

申请号：US17954620

申请日：2022-09-28

Applicant: DENSO CORPORATION

Inventor： Yuki SUGIYAMA ,  Masakazu MORIMOTO ,  Yasuhiro MIZUNO ,  Masaki UCHIYAMA

IPC: B60H1/32 ,  B60H1/00

Abstract: An attachment structure includes expansion valves used in a vehicle, and a housing to which the expansion valves are attached. The housing includes a flow path through which heat medium circulating in a heat pump cycle of an air conditioner of the vehicle flows, and the flow path is opened and closed by the expansion valves.

公开(公告)号：US20160315316A1

公开(公告)日：2016-10-27

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 ,  H01M4/485 ,  H01M10/0525 ,  H01M4/62

CPC classification number: H01M4/366 ,  H01M4/13 ,  H01M4/485 ,  H01M4/5825 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021

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.

Abstract translation: 非水电解质二次电池用电极活性物质包括：芯部，其包含无机氧化物和碳复合无机复合氧化物中的至少一种; 以及用于在芯部上涂覆碳的外壳部分。 电极活性物质的比表面积为6.0m 2 / g以上。 电极活性物质的水分含量为400ppm以下，通过卡尔费休法测定，使得电极活性物质以热蒸发方式加热，并连续保持在250℃下40分钟而不暴露 在电极活性物质暴露于大气中以吸收水分以饱和之后的气氛。

公开(公告)号：US20160013526A1

公开(公告)日：2016-01-14

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 ,  H01M10/647 ,  H01M10/6555 ,  H01M2/10 ,  H01M10/653 ,  H01M10/6552 ,  H01M10/6563 ,  H01M10/625

CPC classification number: H01M10/613 ,  H01M2/1094 ,  H01M10/625 ,  H01M10/647 ,  H01M10/653 ,  H01M10/6552 ,  H01M10/6555 ,  H01M10/6563 ,  H01M10/6568 ,  H01M2220/20

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.

Abstract translation: 电池组包括通过堆叠多个单元电池而集成的多个电池组，流体流动的流体通道，用于冷却设置在电池组之间的单元电池，用于在流体通道中循环流体的鼓风机和多个 导热板。 导热板与构成彼此相邻的电池组的单元电池的外壳热连接，并且设置成构成多个冷却部，其部分存在于流体通道中。 电池组包括通道形成构件，该通道形成构件将流体通道划分为与单元电池的外壳附近的区域的独立通道，并且包括用于支撑导热板的分隔壁。

公开(公告)号：US20130266839A1

公开(公告)日：2013-10-10

申请号：US13846588

申请日：2013-03-18

Applicant: DENSO CORPORATION

Inventor： Kouji MIURA ,  Teruhiko KAMEOKA ,  Masaya NAKAMURA ,  Shun OHKIJIMA ,  Ryuichiro SHINKAI ,  Kouhei YAMAGUCHI ,  Masaki UCHIYAMA ,  Narito HIRAKIDA ,  Kazuhiro TOKONAMI ,  Michihiko MORITA ,  Hiroshi KONDO

IPC: H01M10/50

CPC classification number: H01M10/6555 ,  H01M2/1077 ,  H01M10/647 ,  H01M10/6554

Abstract: A thermal conductive mechanism for a battery pack made up of a stack of a plurality of sub-battery modules each of which includes a plurality of battery cells arrayed thereon. The sub-battery modules each has opposed major surfaces and are laid to overlap each other in a direction perpendicular to the major surfaces. The thermal conductive mechanism is equipped with plates provided one for each of the sub-battery modules. Each of the plates has a given number of the battery cells disposed thereon and also has heat transfer surfaces extending in a planar direction of the plate. The heat transfer surfaces are placed in one of direct and indirect contact with the given number of the battery cells to achieve transfer of heat therebetween, thereby equalizing the temperature in each of the battery cells and also minimizing a difference in temperature among the battery cells.

Abstract translation: 一种由多个子电池模块的堆叠构成的电池组的导热机构，每个子电池模块包括排列在其上的多个电池单元。 子电池模块各自具有相对的主表面，并且在垂直于主表面的方向上彼此重叠。 导热机构配备有为每个子电池模块提供的板。 每个板具有设置在其上的给定数量的电池单元，并且还具有在板的平面方向上延伸的传热表面。 传热表面被放置在与给定数量的电池单元直接和间接接触的一个中，以实现其间的热传递，从而使每个电池单元中的温度均衡，并且还使电池单元之间的温度差最小化。