公开(公告)号：US20250096278A1

公开(公告)日：2025-03-20

申请号：US18968284

申请日：2024-12-04

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Hiroyuki Yamada

IPC: H01M4/66 ,  H01M50/16 ,  H01M50/176 ,  H01M50/184 ,  H01M50/186 ,  H01M50/191 ,  H01M50/536 ,  H01M50/54 ,  H01M50/55 ,  H01M50/553 ,  H01M50/562 ,  H01M50/566

Abstract: A rectangular secondary battery includes a rectangular casing that contains an electrode body, a sealing plate that seals an opening of the rectangular casing, a first positive electrode tab group that is composed of a plurality of positive electrode tabs, a positive electrode terminal that is attached to the sealing plate, a second positive electrode current collector that constitutes a positive electrode current collector member that is electrically connected to the first positive electrode tab group and the positive electrode terminal, and a second insulator. The second insulator includes a base portion that is disposed between the sealing plate and the second positive electrode current collector. The first positive electrode tab group is bent and connected to the second positive electrode current collector, the region being disposed along the sealing plate. A first wall portion is disposed between the first positive electrode tab group and the rectangular casing.

公开(公告)号：US12191499B2

公开(公告)日：2025-01-07

申请号：US16488370

申请日：2018-02-22

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Hiroyuki Yamada

IPC: H01M50/186 ,  H01M4/66 ,  H01M50/16 ,  H01M50/176 ,  H01M50/184 ,  H01M50/191 ,  H01M50/536 ,  H01M50/54 ,  H01M50/55 ,  H01M50/553 ,  H01M50/562 ,  H01M50/566

Abstract: A rectangular secondary battery includes a rectangular casing that contains an electrode body, a sealing plate that seals an opening of the rectangular casing, a first positive electrode tab group that is composed of a plurality of positive electrode tabs, a positive electrode terminal that is attached to the sealing plate, a second positive electrode current collector that constitutes a positive electrode current collector member that is electrically connected to the first positive electrode tab group and the positive electrode terminal, and a second insulator. The second insulator includes a base portion that is disposed between the sealing plate and the second positive electrode current collector. The first positive electrode tab group is bent and connected to the second positive electrode current collector, the region being disposed along the sealing plate. A first wall portion is disposed between the first positive electrode tab group and the rectangular casing.

公开(公告)号：US12021261B2

公开(公告)日：2024-06-25

申请号：US17424216

申请日：2019-11-27

Applicant: Panasonic Corporation ,  SANYO Electric Co., Ltd.

Inventor： Hideo Kasahara ,  Ryosuke Iwata ,  Ryoichi Wakimoto

IPC: H01M50/451 ,  H01M10/0585 ,  H01M50/409 ,  H01M50/414 ,  H01M50/434 ,  H01M50/466 ,  H01M50/491 ,  H01M50/586 ,  H01M50/593

CPC classification number: H01M50/451 ,  H01M10/0585 ,  H01M50/409 ,  H01M50/414 ,  H01M50/434 ,  H01M50/466 ,  H01M50/491 ,  H01M50/586 ,  H01M50/593

Abstract: A stacked secondary battery having an electrode body in which at least one positive and at least one negative plate are stacked, with a multilayered separator interposed, said separator including two porous layers of different materials; and an outer packaging case housing an insulating holder and an electrolyte together, said insulating holder housing the electrode body and being formed of overlapping sheets comprises an insulating material. The outer packaging case has a bottom surface, a plurality of side walls that are provided standing upright from the bottom surface, and an opening that is opposite from the bottom surface. In at least one separator, a section that is exposed from end surfaces of active material mixture layers and metal foil-comprising core bodies of the positive plate and the negative plate is in contact with the vicinity of a bottom line of a valley section that is formed from the sheet.

公开(公告)号：US11715846B2

公开(公告)日：2023-08-01

申请号：US17871417

申请日：2022-07-22

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Atsushi Tsuji

IPC: H01M10/04 ,  H01M50/10 ,  H01M50/60 ,  H01M50/147 ,  H01M50/463 ,  H01M50/531 ,  H01M50/543 ,  H01M10/0585 ,  H01M50/54 ,  H01M50/627 ,  H01M50/553 ,  H01M50/103 ,  H01M50/566 ,  H01M50/567 ,  H01M50/562 ,  H01M50/55 ,  H01M50/466 ,  H01M50/176

CPC classification number: H01M10/0585 ,  H01M10/04 ,  H01M50/10 ,  H01M50/103 ,  H01M50/147 ,  H01M50/54 ,  H01M50/55 ,  H01M50/553 ,  H01M50/562 ,  H01M50/566 ,  H01M50/567 ,  H01M50/627 ,  H01M50/176 ,  H01M50/466

Abstract: A method of manufacturing a secondary battery including an electrode body element fabricating step in which a first electrode body element including a positive electrode plate and a negative electrode plate, and a second electrode body element including a positive electrode plate and a negative electrode plate are fabricated, a tab-connecting step in which a first positive electrode tab group of the first electrode body element and a second positive electrode tab group of the second electrode body element are connected to a second positive electrode collector, and a first negative electrode tab group of the first electrode body element and a second negative electrode tab group of the second electrode body element are connected to a second negative electrode collector, and an electrode body fabricating step in which, after the tab-connecting step, the first electrode body element and the second electrode body element are unified.

公开(公告)号：US11342618B2

公开(公告)日：2022-05-24

申请号：US16334470

申请日：2017-09-21

Applicant: SANYO Electric Co., Ltd. ,  Panasonic Corporation

Inventor： Ryoichi Wakimoto ,  Eiji Hashimoto

IPC: H01M50/186 ,  H01M50/50 ,  H01M50/564 ,  H01M50/505 ,  H01M50/562 ,  H01M10/04

Abstract: A secondary battery including an electrode body including a positive electrode plate and a negative electrode plate; an exterior body that has an opening and houses the electrode body; a sealing body that seals the opening; a terminal that is provided in the sealing body, and connected to the positive electrode plate or the negative electrode plate; and a conductive member that is disposed on an outer side of the sealing body, and is connected to the terminal. The conductive member has an overlap section in which one end of a conductive plate-shaped member is folded and opposed surfaces are overlaid on other, and a base section in which no surfaces are overlaid on other, and the terminal is connected to the conductive member in the base portion.

公开(公告)号：US11289734B2

公开(公告)日：2022-03-29

申请号：US16319714

申请日：2017-07-26

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Atsushi Tsuji

IPC: H01M10/0525 ,  H01M10/04 ,  H01M10/0587 ,  H01M50/103 ,  H01M50/531 ,  H01M50/538 ,  H01M50/543 ,  H01M10/0585 ,  H01M50/528 ,  H01M50/169 ,  H01M50/15 ,  H01M50/60 ,  H01M50/54

Abstract: A method for producing a secondary battery including an electrode body having a positive electrode plate and a negative electrode plate, a prismatic outer body having an opening and houses the electrode body, a sealing plate that seals the opening of the prismatic outer body, and a positive electrode external terminal that is electrically connected to the positive electrode plate and attached to the sealing plate. The method includes a fixation step of electrically connecting a first positive electrode current collector to a positive electrode external terminal and fixing the first positive electrode current collector to the sealing plate, a first connection step of weld-connecting a stack of a plurality of positive electrode tabs to the second positive electrode current collector, and a second connection step of weld-connecting the first positive electrode current collector to the second positive electrode current collector after the fixation step and the first connection step.

公开(公告)号：US20210399366A1

公开(公告)日：2021-12-23

申请号：US17285664

申请日：2019-10-10

Applicant: SANYO Electric Co., Ltd. ,  Panasonic Corporation

Inventor： Ryoichi Wakimoto ,  Kazutaka Mita

IPC: H01M50/103 ,  H01M50/491 ,  H01M50/414 ,  H01M50/188

Abstract: There is provided a prismatic power storage device having a reduced weight and ensuring a space for an electrode body that expands during charging, while the rigidity of an insulating sheet is ensured. A prismatic power storage device according to an aspect of the present disclosure includes: an electrode body (11) including a positive electrode plate, a negative electrode plate, and a separator disposed between the positive electrode plate and the negative electrode plate; an insulating holder (30) formed by shaping an insulating sheet (31) into a box shape and accommodating the electrode body (11); a prismatic outer case having an opening and accommodating the electrode body (11) and the insulating holder (30); and a sealing body sealing the opening of the outer case. The insulating sheet (31) includes a porous body.

公开(公告)号：US11152673B2

公开(公告)日：2021-10-19

申请号：US16209568

申请日：2018-12-04

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Hiroshi Takabayashi

IPC: H01M50/574 ,  H01M50/103 ,  H01M50/543 ,  H01M50/572 ,  H01M10/04 ,  H01M50/15 ,  H01M50/169 ,  H01M50/172 ,  H01M50/209 ,  H01M50/557 ,  H01M4/02

Abstract: A positive electrode collector has a part connected to a positive electrode terminal and a part connected to a positive electrode tab. In the positive electrode collector, a fuse portion is provided between the part connected to the positive electrode terminal and the part connected to the positive electrode tab. In the positive electrode collector, a region closer to the part connected to the positive electrode terminal than the fuse portion is referred to as a first region, and a region closer to the part connected to the positive electrode tab than the fuse portion is referred to as a second region. An insulating plate as an insulating member disposed between the positive electrode collector and an electrode body is connected to the second region, and the second region is prevented from moving toward the first region after the fuse portion blows.

公开(公告)号：US11018367B2

公开(公告)日：2021-05-25

申请号：US16255019

申请日：2019-01-23

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Yohei Muroya ,  Hiroyuki Yamada

IPC: H01M50/10 ,  H01M50/102 ,  H01M50/105 ,  H01M50/107 ,  H01M50/109 ,  H01M50/11 ,  H01M50/14 ,  H01M50/141 ,  H01M50/143 ,  H01M50/145 ,  H01M50/20 ,  H01M50/553 ,  H01M50/543 ,  H01M50/296 ,  H01M50/583 ,  H01M50/574 ,  H01M50/572 ,  H01M50/578 ,  H01M2/34 ,  H01M2/30 ,  H01M2/02 ,  H01M10/04 ,  H01M10/0525 ,  H01M50/502

Abstract: Provided are a secondary battery and a battery pack including the secondary battery. A sealing plate has a positive electrode terminal attachment hole. A positive electrode terminal penetrates the positive electrode terminal attachment hole. An external conductive member is connected to a portion of the positive electrode terminal located on the battery outer side with respect to the sealing plate. The conduction path between a positive electrode plate and the positive electrode terminal is provided with a current interrupting mechanism. A first insulating member made of resin is disposed between the sealing plate and the positive electrode terminal. A second insulating member having higher thermal resistance than the first insulating member is disposed between the external conductive member and the sealing plate.

公开(公告)号：US10811668B2

公开(公告)日：2020-10-20

申请号：US16177727

申请日：2018-11-01

Applicant: SANYO Electric Co., Ltd.

Inventor： Ryoichi Wakimoto ,  Naoya Tada ,  Atsushi Tsuji ,  Yoshinori Yokoyama

IPC: H01M2/36 ,  H01M2/34 ,  H01M2/26 ,  H01M2/30 ,  H01M10/0525

Abstract: A secondary battery includes an electrode body including a positive electrode plate and a negative electrode plate; a battery case containing the electrode body; a terminal attached to the battery case; a conductive member having an opening adjacent to the electrode body; a deformation plate that seals the opening, and a current collector. The positive electrode plate and a positive electrode terminal are electrically connected to each other via a first positive electrode current collector, the deformation plate, and the conductive member. The first positive electrode current collector has a through-hole. The deformation plate is disposed to face the through-hole. A portion of the first positive electrode current collector distant from the through-hole is welded to the deformation plate to form a weld.