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.

公开(公告)号：US20250166933A1

公开(公告)日：2025-05-22

申请号：US18841607

申请日：2023-02-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Nao MATSUMURA ,  Hideki SHIMAMOTO ,  Hiroki HAYASHI ,  Hideo SAKATA

IPC: H01G11/28 ,  H01G11/06 ,  H01G11/48 ,  H01M4/02 ,  H01M4/1399 ,  H01M4/60 ,  H01M4/62 ,  H01M10/0525

Abstract: An electrochemical device disclosed includes a positive electrode, a negative electrode, and a lithium ion conductive electrolyte. The positive electrode includes a positive electrode mixture layer containing a positive electrode active material. The positive electrode active material contains particles of a conductive polymer to and from which anions are reversibly dopable and de-dopable. A ratio V1/V0 of a volume V1 of pores with a pore size of 0.2 μm or less to a volume V0 of all pores is 0.40 or more when a pore distribution of the positive electrode is measured using a mercury porosimeter.

公开(公告)号：US20220230816A1

公开(公告)日：2022-07-21

申请号：US17609543

申请日：2020-05-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hideki SHIMAMOTO ,  Nao MATSUMURA

IPC: H01G11/48 ,  H01G11/06 ,  H01G11/26 ,  H01G11/52

Abstract: An electrochemical device, including: a positive electrode including a positive electrode core material, and a positive electrode material layer supported on the positive electrode core material; a negative electrode including a negative electrode core material, and a negative electrode material layer supported on the negative electrode core material; a separator placed between the positive electrode and the negative electrode; and an electrolyte containing lithium ions. The positive electrode material layer contains a conductive polymer. The positive electrode has a positive electrode non-facing portion where the positive electrode material layer does not face the negative electrode material layer, the positive electrode non-facing portion being larger in area than a negative electrode non-facing portion where the negative electrode material layer does not face the positive electrode material layer in the negative electrode.