公开(公告)号：US20240380078A1

公开(公告)日：2024-11-14

申请号：US18692719

申请日：2022-09-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toshitaka KOBAYASHI ,  Hiroki HAYASHI

IPC: H01M50/533 ,  B23K31/02 ,  H01G11/28 ,  H01G11/70 ,  H01G11/84 ,  H01M10/04 ,  H01M50/107 ,  H01M50/179 ,  H01M50/534 ,  H01M50/536 ,  H01M50/566

Abstract: A current collector plate for a power storage device welded to an end face of a power storage element included in a power storage device. The current collector plate includes a center region, an outer peripheral region, and a bridge portion that connects the center and outer peripheral regions. The outer peripheral region includes a plurality of first weld portions arranged along a radial direction of the end face and welded to the end face. The center region includes a second weld portion that is welded to a conductive member different from the power storage element. A plurality of first through holes in a slit shape are formed to surround the center region such that each of the plurality of first through holes is located between a corresponding one of the plurality of first weld portions and the second weld portion.

公开(公告)号：US20210013463A1

公开(公告)日：2021-01-14

申请号：US17042065

申请日：2019-03-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuichi Tashiro ,  Toshitaka KOBAYASHI ,  Yuji SONODA ,  Toshiaki SHIMIZU ,  Masahiro MAKAJI

IPC: H01M2/10 ,  H01M10/04

Abstract: This power storage module includes power storage devices (100), and a device holder (200) in which the power storage devices (100) are held. The device holder (200) includes accommodation parts (210) in which the power storage devices (100) are accommodated. Each accommodation part (210) includes a semicircular arc face (212) to which a peripheral face of the power storage device (100) is opposed, and linear faces (213) respectively continuous with both ends of the semicircular arc face (212) and each extending to an opening end of the accommodation part (210). Further, the power storage module includes an elastic adhesive (250) filled, in each accommodation part (210), between the peripheral face of the power storage device (100) and each linear face (213), and adhered to the peripheral face of the power storage device (100) and the linear face (213).

公开(公告)号：US20230395330A1

公开(公告)日：2023-12-07

申请号：US18250179

申请日：2021-10-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Toshitaka KOBAYASHI ,  Eiko ISHII ,  Hideki SHIMAMOTO ,  Ryota MORIOKA ,  Hiroki HAYASHI

IPC: H01G9/10 ,  H01G9/00 ,  H01G9/12

CPC classification number: H01G9/10 ,  H01G9/0029 ,  H01G9/12

Abstract: A disclosed power storage device includes a power storage element, a case with a bottomed cylindrical shape having an opening at one end and housing the power storage element, and a sealing member for sealing the opening. The case has, in a vicinity of the opening, a first pressing portion pressing a side surface of the sealing member and protruding inward of the case, and a gas vent portion disposed nearer to the one end of the case than an apex which is the most protruded point of the first pressing portion. This can provide a power storage device including an explosion-proof mechanism that has high operational reliability and does not impair airtightness.