公开(公告)号：US20250079636A1

公开(公告)日：2025-03-06

申请号：US18812454

申请日：2024-08-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takeru HARA ,  Masato ONO ,  Satoshi MORIYAMA ,  Hiroki AWANO ,  Kazuya KUMAZAWA ,  Seigo FUJISHIMA ,  Tomohiro INAGAKI

IPC: H01M50/466

Abstract: A power storage cell includes the following configuration. The power storage cell includes a case, an electrode assembly, and an electrolyte solution. The case accommodates the electrode assembly and the electrolyte solution. The electrode assembly includes a first electrode, a second electrode, and a separator. The separator includes a mountain-fold portion and a valley-fold portion. The mountain-fold portions and the valley-fold portions are alternately arranged in a length direction of the separator. In the mountain-fold portion, the separator is bent in a mountain-folded manner toward outside of the electrode assembly. In the valley-fold portion, the separator is bent in a valley-folded manner toward the outside of the electrode assembly. The first electrode is disposed inside the mountain-fold portion. The second electrode is disposed inside the valley-fold portion. A through hole is formed at a tip of at least one of the mountain-fold portion and the valley-fold portion.

公开(公告)号：US20250055141A1

公开(公告)日：2025-02-13

申请号：US18776695

申请日：2024-07-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takeru HARA ,  Masato ONO ,  Satoshi MORIYAMA ,  Hiroki AWANO ,  Kazuya KUMAZAWA ,  Seigo FUJISHIMA ,  Tomohiro INAGAKI

IPC: H01M50/489 ,  H01M50/103 ,  H01M50/595 ,  H01M50/627

Abstract: A power storage cell comprises a case, an electrode assembly, an insulating film, and an electrolyte solution. The case accommodates the electrode assembly, the insulating film, and the electrolyte solution. The electrode assembly has an upper surface, a lower surface, and a peripheral surface. A liquid inlet hole is provided on a side of the case facing the upper surface. The peripheral surface connects the upper surface with the lower surface. The peripheral surface includes a first region and a second region. The first region is covered with the insulating film. The second region is not covered with the insulating film. The second region extends from the upper surface to reach the lower surface. The second region is smaller in area than the first region.

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：US20220359938A1

公开(公告)日：2022-11-10

申请号：US17813742

申请日：2022-07-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Seigo FUJISHIMA ,  Masayuki KITAURA

IPC: H01M50/20 ,  H01M10/04 ,  H01M50/233 ,  H01M50/264 ,  H01M50/211 ,  H01M50/244

Abstract: Provided are a cell pack having a restraint mechanism which is unlikely to be loosened or broken even when a restraining pressure is applied which is higher than, for example, in the related art, and also a method for producing and a method for disassembling the cell pack. A cell pack includes a plurality of unit cells arranged in an arrangement direction and a restraint mechanism for restraining these unit cells. The restraint mechanism includes: a first end plate portion disposed at an end portion in a first direction of the arrangement direction of the plurality of unit cells; a second end plate portion disposed at an end portion in a second direction of the arrangement direction of the plurality of unit cells; and a ring-shaped restraining hoop portion including a first support portion disposed on a surface of the first end plate portion in the first direction, a second support portion disposed on a surface of the second end plate portion in the second direction, and a pair of side wall portions continuously connecting the first support portion and the second support portion along the arrangement direction. A dimension in the arrangement direction between the first end plate portion and the second end plate portion of the restraining hoop portion is set such that a predetermined restraining pressure is applied in a direction of compressing the plurality of unit cells along the arrangement direction.

公开(公告)号：US20210328295A1

公开(公告)日：2021-10-21

申请号：US17239424

申请日：2021-04-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Seigo FUJISHIMA ,  Masayuki KITAURA

IPC: H01M50/20 ,  H01M10/04 ,  H01M50/233 ,  H01M50/264 ,  H01M50/211

Abstract: Provided are a cell pack having a restraint mechanism which is unlikely to be loosened or broken even when a restraining pressure is applied which is higher than, for example, in the related art, and also a method for producing and a method for disassembling the cell pack. A cell pack includes a plurality of unit cells arranged in an arrangement direction and a restraint mechanism for restraining these unit cells. The restraint mechanism includes: a first end plate portion disposed at an end portion in a first direction of the arrangement direction of the plurality of unit cells; a second end plate portion disposed at an end portion in a second direction of the arrangement direction of the plurality of unit cells; and a ring-shaped restraining hoop portion including a first support portion disposed on a surface of the first end plate portion in the first direction, a second support portion disposed on a surface of the second end plate portion in the second direction, and a pair of side wall portions continuously connecting the first support portion and the second support portion along the arrangement direction. A dimension in the arrangement direction between the first end plate portion and the second end plate portion of the restraining hoop portion is set such that a predetermined restraining pressure is applied in a direction of compressing the plurality of unit cells along the arrangement direction.

公开(公告)号：US20180294510A1

公开(公告)日：2018-10-11

申请号：US15943788

申请日：2018-04-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  KYOHO MACHINE WORKS, LTD.

Inventor： Masayuki KITAURA ,  Seigo FUJISHIMA ,  Yukihiro ISOGAI ,  Masanori KODERA

IPC: H01M10/052 ,  H01M10/613 ,  H01M10/647 ,  H01M10/6557 ,  B32B15/09 ,  H01M10/0562 ,  H01M4/13 ,  H01M4/64

CPC classification number: H01M10/052 ,  B32B15/09 ,  H01M4/13 ,  H01M4/64 ,  H01M10/0481 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/613 ,  H01M10/647 ,  H01M10/6557 ,  H01M2004/027 ,  H01M2004/028

Abstract: Provided is a laminated battery module that is capable of imparting a minimum required restraining load to a battery laminate at a low temperature and a low charging rate, while also withstanding the load on the battery laminate at a high temperature and a high charging rate, without increasing the size of the restraining member. A laminated battery module 100 includes a battery laminate 15 containing one or more unit cells, a restraining member 20 containing a pair of end plates 21 located on both ends of the battery laminate 15 in the direction of lamination and tensioning members 22 that fasten the pair of end plates 21 mutually, and an elastic member 30 located between the pair of end plates 21; wherein, the elastic member 30 is composed of a material that undergoes a decrease in the elastic modulus thereof accompanying a rise in temperature from −30° C. to 80° C.

公开(公告)号：US20170313170A1

公开(公告)日：2017-11-02

申请号：US15498713

申请日：2017-04-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yasuhiro HARA ,  Seigo FUJISHIMA ,  Masayoshi ISHIKAWA ,  Masayuki KITAURA

IPC: B60K1/04 ,  H01M2/10 ,  B60L11/18

CPC classification number: B60K1/04 ,  B60K2001/0438 ,  B60L11/1877 ,  B60L11/1879 ,  H01M2/1077 ,  H01M2/1083 ,  H01M2220/20

Abstract: A battery mounting structure having an enhanced rigidity against an impact load applied from the side is provided. Battery modules are juxtaposed to form arrays of the battery pack in a battery pack and the battery pack is disposed between the frame members. A load transmission member is disposed in a clearance between the battery modules adjacent to each other in a width direction of the vehicle. The load transmission member is crushed in the width direction by an impact load applied from the side of the vehicle to absorb collision energy.