公开(公告)号：US20150333333A1

公开(公告)日：2015-11-19

申请号：US14685725

申请日：2015-04-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomoya MESUDA

IPC: H01M4/62

CPC classification number: H01M4/622 ,  H01M4/13 ,  H01M4/131 ,  H01M4/623 ,  Y02E60/122

Abstract: A positive electrode paste for a non-aqueous electrolyte secondary battery is provided. The positive electrode paste includes a binder and a positive electrode active material. The binder includes a resin including polyvinyl acetal as a basic skeleton, the resin having a weight average molecular weight of 50000 to 140000 and having a hydroxyl group content of 42 to 60 mol %; and polyvinylidene fluoride having a weight average molecular weight of 800000 to 1200000.

Abstract translation: 提供了一种非水电解质二次电池用正极膏。 正极浆料包括粘合剂和正极活性物质。 粘合剂包括具有聚乙烯醇缩醛作为基本骨架的树脂，该树脂的重均分子量为50000〜140000，羟基含量为42〜60摩尔％。 和重均分子量为800000〜1200000的聚偏二氟乙烯。

公开(公告)号：US20250046777A1

公开(公告)日：2025-02-06

申请号：US18617833

申请日：2024-03-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke SHIMURA ,  Tomoya MESUDA

IPC: H01M4/04

Abstract: An electrode manufacturing method includes an application step of obtaining a coating film by coating a slurry obtained by dispersing an electrode material on a current collecting foil in a solvent to obtain a coating film, and a drying step of drying the coating film while transporting the current collecting foil from which the coating film is formed in the drying furnace interior, wherein the drying step irradiates at least one heat source to the coating film, the irradiation range of the heat source irradiated to the coating film has two regions divided by a straight line that divides the length in the transport direction of the irradiation range into two equal parts, and the ratio of the energy density of the heat source irradiated to the upstream region to the energy density of the heat source irradiated to the downstream region is 1.2 or more and 3.0 or less.

公开(公告)号：US20170373343A1

公开(公告)日：2017-12-28

申请号：US15626762

申请日：2017-06-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomoya MESUDA

IPC: H01M10/0525 ,  H01M4/36 ,  H01M4/04

CPC classification number: H01M10/0525 ,  H01M4/0435 ,  H01M4/139 ,  H01M4/364 ,  H01M2004/021

Abstract: A method of producing a negative electrode plate includes mixing a negative electrode mixture material containing a negative electrode active material and a binding material with a solvent and forming a wet granulated body and rolling the wet granulated body to pass through a gap between a pair of rolls, molding the body in a sheet form, and adhering the body to a surface of a negative electrode current collecting foil. Moreover, when the wet granulated body is formed, a powder whose average particle size X μm and tap density Y g/cm3 satisfy Y≧0.0139X+0.4386 is used as a powder of the negative electrode active material.

公开(公告)号：US20170263918A1

公开(公告)日：2017-09-14

申请号：US15454574

申请日：2017-03-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomoyuki UEZONO ,  Tomoya MESUDA ,  Kunihiko HAYASHI

IPC: H01M4/136 ,  H01M4/04 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/58

CPC classification number: H01M4/136 ,  B05D5/12 ,  H01M4/0404 ,  H01M4/0409 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/364 ,  H01M4/5825 ,  H01M4/62 ,  H01M4/623 ,  H01M10/0525

Abstract: A manufacturing method of a lithium ion secondary battery includes: forming a first mixture by mixing powder of a first electrode material, which is one of the active material and the conductive material, with powder of trilithium phosphate; forming a second mixture by mixing the first mixture with powder of a second electrode material which is the other one of the active material and the conductive material; forming a wet granulated body by mixing the second mixture with the binder and a solvent; and forming the active material layer by attaching the wet granulated body to the surface of the current collector foil.

公开(公告)号：US20250149714A1

公开(公告)日：2025-05-08

申请号：US18928183

申请日：2024-10-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomoya MESUDA ,  Seigo FUJISHIMA ,  Yoshiro OBAYASHI ,  Kosuke SUZUKI ,  Takeru HARA ,  Satoshi MORIYAMA ,  Kenta MIYAHARA

IPC: H01M50/26

Abstract: A battery module includes: a plurality of battery cells, each battery cell being formed by sealing, with a laminate film, an elongate electrode body; and a case in which the plurality of battery cells are housable in an arrayed state, wherein battery cells that are adjacent are adhered to each other by an adhesive, and wherein an amount of the adhesive differs between lengthwise direction central parts and end parts of the battery cells.

公开(公告)号：US20250079431A1

公开(公告)日：2025-03-06

申请号：US18679545

申请日：2024-05-31

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yosuke SHIMURA ,  Tomoya MESUDA

IPC: H01M4/04 ,  H01M4/02 ,  H01M4/66

Abstract: A coating step of coating a slurry obtained by dispersing an electrode material on a current collector foil in a solvent to obtain a coating film, and a drying step of drying the coating film while transporting the current collector foil on which the coating film is formed in a drying furnace, the coating film, three regions divided along the transport direction, a central portion disposed in the center of the width direction, and an end portion disposed on both sides of the central portion, respectively, a drying step drying each end portion of the coating film by a heat source of low energy density, drying the central portion of the coating film by a high energy density heat source, an electrode manufacturing method.

公开(公告)号：US20250046916A1

公开(公告)日：2025-02-06

申请号：US18636501

申请日：2024-04-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomoya MESUDA ,  Seigo FUJISHIMA ,  Yoshiro OBAYASHI ,  Kosuke SUZUKI ,  Takeru HARA ,  Satoshi MORIYAMA ,  Kenta MIYAHARA

IPC: H01M50/105 ,  B60L50/64 ,  H01M50/211

Abstract: The laminate film includes an accommodating portion for accommodating the electrode body, and seals the electrode body in the accommodated state. The accommodating portion has a side wall portion facing the peripheral end face of the electrode body, and an uneven portion is provided on at least a part of the side wall portion.

公开(公告)号：US20180138515A1

公开(公告)日：2018-05-17

申请号：US15793080

申请日：2017-10-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomoya MESUDA

IPC: H01M4/66 ,  H01M4/1393 ,  H01M4/38 ,  H01M4/64 ,  H01M4/1395 ,  H01M4/58 ,  H01M4/48

CPC classification number: H01M4/667 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/139 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/382 ,  H01M4/48 ,  H01M4/58 ,  H01M4/64 ,  H01M4/661 ,  H01M2004/021

Abstract: An electrode plate manufacturing apparatus includes: a first roll; a second roll that consolidates a particle aggregate and forms an undried active material film; and a third roll that transcribes the undried active material film on the second roll onto a current collector foil. A circumferential velocity A of the first roll, a circumferential velocity B of the second roll, a conveyance velocity C of the current collector foil, a contact angle α of the first roll, a contact angle β of the second roll, and a contact angle γ of the current collector foil satisfy conditions (i) β−α≥−1.6×B/A+40 where β−α>0 and B/A≥1 and (ii) γ−β≥−1.6×C/B+40 where γ−β>0 and C/B≥1.

公开(公告)号：US20250158144A1

公开(公告)日：2025-05-15

申请号：US18789676

申请日：2024-07-31

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomoya MESUDA ,  Seigo FUJISHIMA ,  Yoshiro OBAYASHI ,  Kosuke SUZUKI ,  Takeru HARA ,  Satoshi MORIYAMA ,  Kenta MIYAHARA

IPC: H01M10/48 ,  B60L50/64 ,  H01M50/211

Abstract: The battery module includes an elongated battery cell composed of an electrode assembly sealed by a laminated film, a case capable of accommodating a battery cell group in which a plurality of battery cells is arranged, and a strain sensor provided in at least one of the battery cell and the case and capable of detecting strain.

公开(公告)号：US20250149710A1

公开(公告)日：2025-05-08

申请号：US18929615

申请日：2024-10-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomoya MESUDA ,  Seigo FUJISHIMA ,  Yoshiro OBAYASHI ,  Kosuke SUZUKI ,  Takeru HARA ,  Satoshi MORIYAMA ,  Kenta MIYAHARA

IPC: H01M50/242 ,  B60L50/64 ,  H01M50/211 ,  H01M50/682

Abstract: A battery module includes: a plurality of battery cells, each battery cell being formed by sealing an electrode assembly with a lamination film; and a case capable of housing a battery cell group configured by an array of the plurality of battery cells, wherein a lubricant is provided between the battery cell group and the case.