公开(公告)号：US20250167351A1

公开(公告)日：2025-05-22

申请号：US18935682

申请日：2024-11-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yusuke IKEDA ,  Kenichi KAKISHITA ,  Tomofumi HIRUKAWA ,  Masashi UEDA ,  Shinji KOJIMA ,  Masataka OGUSHI ,  Kosuke YONEKAWA

IPC: H01M50/112 ,  B60L50/64 ,  H01M50/147 ,  H01M50/15 ,  H01M50/164

Abstract: A laminated battery includes an electrode stack including a plurality of electrodes stacked together and having a cuboid shape, and a laminate film covering and sealing the electrodes. The laminate film includes a film body covering four surfaces of the electrode stack, a film partitioning wall interposed between two adjacent electrodes of the plurality of electrodes, and cover members that are twice as many as the electrodes. The film body and the film partitioning wall define accommodating portions respectively accommodating the electrodes. The cover members cover two remaining uncovered sides of each accommodating portion. The cover members each have a recess-shaped portion including a bottom wall and four side walls. An outer surface or an inner surface of the bottom wall faces a side surface of a corresponding one of the electrodes. Outer surfaces of the side walls are fusion-bonded to the film body or the film partitioning wall.

公开(公告)号：US20250158251A1

公开(公告)日：2025-05-15

申请号：US18812261

申请日：2024-08-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yusuke IKEDA ,  Kenichi KAKISHITA ,  Tomofumi HIRUKAWA ,  Masashi UEDA ,  Shinji KOJIMA ,  Masataka OGUSHI ,  Kosuke YONEKAWA

IPC: H01M50/548 ,  H01M50/249

Abstract: A laminate type battery includes: an electrode body; a side-surface member disposed on a side surface of the electrode body; and a laminate film that covers the electrode body and a part of the side-surface member, in which: the side-surface member is disposed at a position deviated from a center of the side surface to one side in a longitudinal direction of the side surface; and in the side-surface member, the volume of the side-surface member positioned on a deviation side on the side surface is equal to the volume of the side-surface member positioned on a non-deviation side on the side surface, the deviation side being the one side to which the side-surface member is positioned so as to be deviated from the center in the longitudinal direction of the side surface, the non-deviation side being the other side in the longitudinal direction of the side surface.

公开(公告)号：US20250140993A1

公开(公告)日：2025-05-01

申请号：US18744704

申请日：2024-06-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yusuke IKEDA ,  Kenichi KAKISHITA ,  Tomofumi HIRUKAWA ,  Masashi UEDA ,  Shinji KOJIMA ,  Masataka OGUSHI ,  Kosuke YONEKAWA

IPC: H01M50/124 ,  H01M50/103 ,  H01M50/15

Abstract: A laminate type battery includes an electrode body, and a laminate film that covers and encloses the electrode body, in which: the laminate film includes a film body that covers four surfaces of the electrode body having a rectangular parallelepiped shape, and two lid members that cover two remaining side surfaces of the electrode body respectively; and each of the lid members has a concave shape that is constituted by one bottom plane and four wall planes, an outside surface of the concave shape at the bottom plane or an inside surface of the concave shape at the bottom plane faces the side surface of the electrode body, and outside surfaces of the concave shape at the wall planes are fused with the film body.

公开(公告)号：US20250125454A1

公开(公告)日：2025-04-17

申请号：US18822298

申请日：2024-09-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kenichi KAKISHITA ,  Yusuke IKEDA ,  Tomofumi HIRUKAWA ,  Masashi UEDA ,  Shinji KOJIMA ,  Masataka OGUSHI ,  Kosuke YONEKAWA

IPC: H01M50/105

Abstract: A method of manufacturing a laminate-type battery is disclosed. The laminate-type battery includes an electrode body, a side member disposed at a side surface of the electrode body, and a laminate film covering the electrode body and a part of the side member, the side member being disposed at a position offset to a first side in a longitudinal direction of the side surface. The method includes a welding step of welding the laminate film so as to cover the electrode body and the part of the side member. In the laminate film used in the welding step, an average thickness of a region contacting a first region of the side member is larger than an average thickness of a region contacting a second region of the side member.

公开(公告)号：US20210257653A1

公开(公告)日：2021-08-19

申请号：US17120411

申请日：2020-12-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masato ONO ,  Yuichi ITOH ,  Yusuke IKEDA ,  Kazuhito KATO

IPC: H01M10/04

Abstract: A stacking apparatus provided with a flexible conveyor plate (20), a clamp mechanism (25) for holding a sheet-shaped member carried on the conveyor plate (20) against the conveyor plate (20), and an adjustment mechanism able to adjust the degree of curvature of the conveyor plate (20). When stacking a new sheet-shaped member (1) carried on the conveyor plate (20) onto already stacked sheet-shaped members (1), the adjustment mechanism makes the conveyor plate (20) deform from a flat state to a curved state to make the new sheet-shaped member (1) carried on the conveyor plate (20) deform from a flat state to a curved state.

公开(公告)号：US20250055167A1

公开(公告)日：2025-02-13

申请号：US18645804

申请日：2024-04-25

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Yusuke IKEDA ,  Kenichi Kakishita ,  Tomofumi Hirukawa ,  Masashi Ueda ,  Shinji Kojima ,  Masataka Ogushi ,  Kosuke Yonekawa

IPC: H01M50/595 ,  H01M10/04

Abstract: A battery cell includes an electrode body in which a plurality of laminated structures having a cathode, an anode, and a separator interposed between the cathode and the anode are further laminated, and a tape wound around the outer periphery of the electrode body over one circumference, wherein the tape has an overlapping portion in which one side and the other end side in an outer peripheral direction overlap each other, and a direction in which a plurality of laminated structures are laminated in the electrode body is defined as a lamination direction, and in a case where an end surface in a lamination direction in the electrode body is defined as a lamination surface, the overlapping portion is disposed on a surface other than the lamination surface in the electrode body.

公开(公告)号：US20250055081A1

公开(公告)日：2025-02-13

申请号：US18660707

申请日：2024-05-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kenichi KAKISHITA ,  Yusuke IKEDA ,  Tomofumi HIRUKAWA ,  Masashi UEDA ,  Shinji KOJIMA ,  Masataka OGUSHI ,  Kosuke YONEKAWA

IPC: H01M50/105

Abstract: A laminated battery, a battery element, and a laminate film enclosing the battery element, wherein the laminate film has a fused portion in which end portions are overlapped and an inner surface is fused, and the laminate film has a fused portion side surface in which a fused portion is formed, an opposite side surface opposed to the fused portion side surface, and a pair of main surfaces orthogonal to the fused portion side surface and the opposite side surface and having an area larger than the fused portion side surface and the opposite side surface, and the laminate film has an uneven shape on at least one of the fused portion side surface and the opposite side surface.

公开(公告)号：US20250125402A1

公开(公告)日：2025-04-17

申请号：US18822299

申请日：2024-09-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yusuke IKEDA ,  Kenichi KAKISHITA ,  Tomofumi HIRUKAWA ,  Masashi UEDA ,  Shinji KOJIMA ,  Masataka OGUSHI ,  Kosuke YONEKAWA

IPC: H01M10/04 ,  H01M50/103 ,  H01M50/176 ,  H01M50/557

Abstract: A method of manufacturing a laminate-type battery is disclosed. The battery includes an electrode body, a side member disposed at a side face of the electrode body, and a laminate film covering the electrode body and a part of the side member, the side member being disposed at a position that is offset to a first side in a longitudinal direction of the side face relative to a center of the side face in the longitudinal direction. The method includes welding the laminate film so as to cover the electrode body and a part of the side member. The side member is shaped such that a thickness of the side member in a transverse direction of the side face increases continuously towards the first side.

公开(公告)号：US20210280897A1

公开(公告)日：2021-09-09

申请号：US17148971

申请日：2021-01-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yusuke IKEDA ,  Masato ONO

IPC: H01M10/04 ,  H01M10/613

Abstract: A method for manufacturing an all-solid-state battery includes a battery unit producing step, a flattening step, and a stacking step. In the battery unit producing step, a battery unit having a plate shape is produced through a pressing step in which a laminate including at least one each of a positive electrode active material layer, a solid electrolyte layer, and a negative electrode active material layer is pressed in a thickness direction of the laminate with a first pressure. In the flattening step, the battery unit is flattened by pressing the produced battery unit in the thickness direction with a second pressure equal to or lower than the first pressure while heating the battery unit to a temperature equal to or higher than a temperature at which the battery unit softens and is deformed. In the stacking step, a plurality of the flattened battery units are stacked.

公开(公告)号：US20250118878A1

公开(公告)日：2025-04-10

申请号：US18810621

申请日：2024-08-21

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yusuke IKEDA ,  Kenichi KAKISHITA ,  Tomofumi HIRUKAWA ,  Masashi UEDA ,  Shinji KOJIMA ,  Masataka OGUSHI ,  Kosuke YONEKAWA

IPC: H01M50/595 ,  H01M50/249

Abstract: A cell stack assembly, including: a plurality of stacked battery cells, each including an electrode assembly; a laminate exterior packaging that covers the electrode assembly and encloses the electrode assembly internally; and a fixing tape, including at least one of an inner fixing tape wound in a peripheral direction onto an outer peripheral face of the electrode assembly at an inner side of the laminate exterior packaging, or an outer fixing tape wound in a peripheral direction onto an outer peripheral face of the laminate exterior packaging, wherein: taking a direction in which the plurality of battery cells are stacked as a stacking direction, the fixing tape is wound such that winding positions of the fixing tape do not overlap in the stacking direction for at least one adjacent pair of the battery cells.