公开(公告)号：US20230129000A1

公开(公告)日：2023-04-27

申请号：US17905645

申请日：2021-03-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NOBUTAKA TAKEDA ,  TAKUYA HIROBE ,  RYOTA MORIOKA ,  KENICHI NAGAMITSU

IPC: H01M4/60 ,  H01M4/137 ,  H01M50/102

Abstract: Electrochemical device 200 disclosed includes positive electrode 10 and negative electrode 20. Positive electrode 10 includes a positive electrode material layer. The positive electrode material layer contains particles of an active material and a conductive agent. The cohesive force between the particles of the active material and the conductive agent is greater than the cohesive force between the conductive agent.

公开(公告)号：US20240170227A1

公开(公告)日：2024-05-23

申请号：US18260316

申请日：2021-12-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TOSHITAKA KOBAYASHI ,  HIROKI HAYASHI ,  EIKO ISHII ,  HIDEKI SHIMAMOTO ,  RYOTA MORIOKA

IPC: H01G9/12 ,  H01G9/10 ,  H01M50/107

CPC classification number: H01G9/12 ,  H01G9/10 ,  H01M50/107

Abstract: A power storage device of the present disclosure includes: a power storage element; a case that houses the power storage element, the case having a bottomed tubular shape and including an opening at one end of the case; and a sealing body that seals the opening. The case includes a first pressing part and a second pressing part in a vicinity of the opening. The first pressing part presses a side surface of the sealing body and protrudes to an inside of the case, and the second pressing part presses an upper surface of the sealing body. The sealing body includes a slit on the upper surface of the sealing body. The slit extends radially inward of the case with respect to the second pressing part and opens at the side surface of the sealing body.