公开(公告)号：US20250125497A1

公开(公告)日：2025-04-17

申请号：US18907604

申请日：2024-10-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinya ISHIKAWA ,  Takashi MIURA ,  Tetsuya MIMURA ,  Toshihiro SHIMONAKA ,  Yuki HIRATA ,  Masayoshi HAGA ,  Kazuya KUMAZAWA

IPC: H01M50/51 ,  B60L50/64 ,  H01M50/211 ,  H01M50/507

Abstract: A battery module in which a laminated body configured by laminating plural battery cells to each other is accommodated within a module case and in which plural battery cells are electrically connected to each other, wherein: the each battery cell includes a first electrode lead that protrudes at one side in a width direction along a first side surface portion at one side in the thickness direction, and a second electrode lead that protrudes at another side in the width direction along a second side surface portion at another side in the thickness direction; and each battery cell has a symmetrical structure in which height positions of the first electrode lead and the second electrode lead do not change in an inverted posture inverted along a center line in the thickness direction and an inverted posture inverted along a center line in the width direction.

公开(公告)号：US20250055094A1

公开(公告)日：2025-02-13

申请号：US18638833

申请日：2024-04-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinya ISHIKAWA ,  Takashi MIURA ,  Tetsuya MIMURA ,  Toshihiro SHIMONAKA ,  Yuki HIRATA ,  Masayoshi HAGA ,  Kazuya KUMAZAWA

IPC: H01M50/176 ,  H01M50/103 ,  H01M50/209 ,  H01M50/249 ,  H01M50/533

Abstract: The battery cell includes an electrode body in which electrodes and separators are alternately stacked, a battery case in which the electrode body is accommodated, and an electrode lead in which one end is connected to the electrode body inside the battery case and the other end protrudes from an end portion in the width direction of the battery case and is folded back toward the battery case.

公开(公告)号：US20240396187A1

公开(公告)日：2024-11-28

申请号：US18632481

申请日：2024-04-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masahiro ISHIZUKA ,  Kosuke SUZUKI ,  Hideto MORI ,  Mitsuru TATEISHI ,  Shinya ISHIKAWA ,  Mari TARUTANI ,  Kenta KIMURA ,  Masato ONO

IPC: H01M50/548 ,  H01M50/186 ,  H01M50/30 ,  H01M50/538

Abstract: A secondary battery includes an electrode assembly, a housing that houses the electrode assembly, a positive electrode terminal, and a negative electrode terminal. The housing includes a main body with a first opening and a second opening respectively provided on opposite sides in a long-side direction, a first sealing body that closes the first opening, and a second sealing body that closes the second opening. The main body includes a pair of long-side surfaces and a pair of short-side surfaces facing each other in a short-side direction orthogonal to the long-side direction. The electrode assembly includes a negative electrode current collecting portion located on a first end side in the long-side direction, and a positive electrode current collecting portion located on a second end side in the long-side direction. One short-side surface of the pair of short-side surfaces is provided with a single pressure release valve.

公开(公告)号：US20250055150A1

公开(公告)日：2025-02-13

申请号：US18655516

申请日：2024-05-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinya ISHIKAWA ,  Takashi Miura ,  Tetsuya Mimura ,  Toshihiro Shimonaka ,  Yuki Hirata ,  Masayoshi Haga ,  Kazuya Kumazawa

IPC: H01M50/516 ,  H01M50/249 ,  H01M50/507

Abstract: The battery module includes a plurality of battery cells stacked on each other, an electrode lead protruding from the battery cell, and a bus bar electrically joined to the electrode lead via a welded portion, the welded portion being formed so as to straddle the end portions of the plurality of electrode leads on a surface where the end portions of the plurality of electrode leads approach each other.

公开(公告)号：US20250007100A1

公开(公告)日：2025-01-02

申请号：US18679572

申请日：2024-05-31

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masahiro ISHIZUKA ,  Kosuke SUZUKI ,  Hideto MORI ,  Mitsuru TATEISHI ,  Shinya ISHIKAWA ,  Mari TARUTANI ,  Kenta KIMURA

IPC: H01M50/474 ,  H01M50/103 ,  H01M50/14 ,  H01M50/15 ,  H01M50/48 ,  H01M50/531 ,  H01M50/548

Abstract: A secondary battery includes an electrode assembly, a tubular member, a pair of sealing bodies, a first external terminal, a second external terminal, and a spacer disposed inside the tubular member, wherein the electrode assembly has a first end portion located on one side in a direction parallel to the cylindrical axis direction and a second end portion located on the other side in the parallel direction, and the first end portion is provided with one or more first current collector tabs electrically connected to the first external terminal, and the second end portion is provided with one or more second current collector tabs electrically connected to the second external terminal, and the spacer includes a first member provided between the one sealer and the first end portion, and a second member provided between the other sealer and the second end portion.

公开(公告)号：US20240396130A1

公开(公告)日：2024-11-28

申请号：US18614863

申请日：2024-03-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masahiro ISHIZUKA ,  Kosuke SUZUKI ,  Hideto MORI ,  Mitsuru TATEISHI ,  Shinya ISHIKAWA ,  Mari TARUTANI ,  Kenta KIMURA

IPC: H01M50/176 ,  H01M10/04 ,  H01M50/103 ,  H01M50/186 ,  H01M50/538

Abstract: A secondary battery includes: an electrode assembly including a stack of a plurality of positive electrodes and a plurality of negative electrodes with a separator in between, each of the plurality of positive electrodes including a positive-electrode current collecting foil, each of the plurality of negative electrodes including a negative-electrode current collecting foil; and an exterior package that accommodates part of the electrode assembly. The electrode assembly includes a positive-electrode current collecting bundle including a bundle of respective parts of a plurality of the positive-electrode current collecting foils, and a negative-electrode current collecting bundle including a bundle of respective parts of a plurality of the negative-electrode current collecting foils, and part of at least one collecting bundle of the positive-electrode current collecting bundle and the negative-electrode current collecting bundle extends to outside of the exterior package.

公开(公告)号：US20250149695A1

公开(公告)日：2025-05-08

申请号：US18920998

申请日：2024-10-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinya ISHIKAWA

IPC: H01M50/184 ,  H01M50/105 ,  H01M50/186 ,  H01M50/211

Abstract: The present disclosure provides a battery which has high volumetric efficiency, and in which spring-back of a bent portion of a laminated film is inhibited. The battery of the present disclosure includes an electrode laminate and a laminated film sealing it. The laminated film in the battery of the present disclosure has an extending part which extends on a periphery of the electrode laminate, and is bent toward the electrode laminate. A total thickness of the first region of the electrode laminate and the laminated film sealing the first region is less than a total thickness of the second region of the electrode laminate and the laminated film sealing the second region. Further, in a portion of the laminated film sealing the first region, a belt-like member is arranged such that it is wound around the laminated film to immobilize the extending part.

公开(公告)号：US20250112335A1

公开(公告)日：2025-04-03

申请号：US18896955

申请日：2024-09-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinya ISHIKAWA ,  Takashi MIURA ,  Tetsuya MIMURA ,  Toshihiro SHIMONAKA ,  Yuki HIRATA ,  Masayoshi HAGA ,  Kazuya KUMAZAWA

IPC: H01M50/503 ,  B60L50/64 ,  H01M50/105 ,  H01M50/178 ,  H01M50/211 ,  H01M50/507 ,  H01M50/512

Abstract: A battery module in which plural battery cells that are laminated to each other are accommodated inside a module case, and the plural battery cells are electrically connected to each other, wherein: each battery cell includes a first side surface portion that is an embossed surface forming a housing space at an interior of the battery cell, and a planar second side surface portion, which are arranged so as to face each other in a lamination direction, and an electrode lead is provided along the second side surface portion and protrudes from width direction end portions of the battery cell, and the battery module includes at least one first connection portion that arranges second side surface portions of two adjacent battery cells so as to face each other, brings electrode leads of the two adjacent battery cells close to each other, and is connected to the bus bar.

公开(公告)号：US20250096330A1

公开(公告)日：2025-03-20

申请号：US18668407

申请日：2024-05-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroshi NAGASE ,  Kenichi KAKISHITA ,  Shinya ISHIKAWA ,  Ryo KAGAMI ,  Norihiro OSE

IPC: H01M10/0587 ,  H01M10/0525

Abstract: In the electrode laminate of the present disclosure, a fixing member including a curable resin is disposed on at least one side face portion. The fixing member has a thin film region and a thick film region. The thin film region is formed on at least one end portion including the terminal end of the fixing member, and the thick film region is formed at a portion other than the thin film region. The thickness of the fixing member is thinnest at the terminal end. Further, the battery of the present disclosure includes the electrode laminate of the present disclosure and a laminate film sealing the electrode laminate.

公开(公告)号：US20240429569A1

公开(公告)日：2024-12-26

申请号：US18733134

申请日：2024-06-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masahiro ISHIZUKA ,  Kosuke SUZUKI ,  Hideto MORI ,  Mitsuru TATEISHI ,  Shinya ISHIKAWA ,  Mari TARUTANI ,  Kenta KIMURA

IPC: H01M50/533 ,  H01M50/103 ,  H01M50/15 ,  H01M50/548

Abstract: A secondary battery includes: an electrode assembly including a first end portion where one or more negative electrode tabs are formed, and a second end portion where one or more positive electrode tabs are formed; a housing containing the electrode assembly; and a negative electrode terminal and a positive electrode terminal provided on the housing, the housing includes a main body, a first sealing body, and a second sealing body, the negative electrode terminal is provided on the first sealing body, the positive electrode terminal is provided on the second sealing body, the one or more negative electrode tabs are electrically connected to the negative electrode terminal, the one or more positive electrode tabs are electrically connected to the positive electrode terminal, and one of the one or more negative electrode tabs and the one or more positive electrode tabs is larger in length than the other.