Title:
Flat form battery
Document Type and Number:
Japanese Patent JP6058951
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To materialize a structure capable of preventing a connection part between an outer can and a sealing can from being loosened even when the outer can is deformed under a high temperature environment, in a flat battery in which the bottom of the outer can is a plane.SOLUTION: A flat battery (1) includes a bottomed and cylindrical positive electrode can (10) having a cylindrical peripheral wall part (12) extending in the direction of a cylinder axis, and a bottom (11) covering one end side of the peripheral wall part (12), a negative electrode can (20) which has a cylindrical peripheral wall part (22) extending in the direction of the cylinder axis, is disposed so as to cover the opening of the positive electrode can (10), and to the peripheral wall part (22) of which the peripheral wall part (12) is connected, and a positive electrode material (41) disposed in a space formed by the positive electrode can (10) and the negative electrode can (20). A groove part (11a) is formed on the inner surface of the bottom (11) of the positive electrode can (10). The groove part (11a) is formed on the outside of the positive electrode material (41) viewing from the direction of the cylinder axis.
Inventors:
Kenji Tsuda
Koji Yamaguchi
Koji Yamaguchi
Application Number:
JP2012195636A
Publication Date:
January 11, 2017
Filing Date:
September 06, 2012
Export Citation:
Assignee:
Hitachi Maxell Co., Ltd.
International Classes:
H01M2/02; H01M2/04; H01M2/08
Domestic Patent References:
| JP2002175789A | ||||
| JP2011187407A | ||||
| JP55010228U | ||||
| JP60065970U | ||||
| JP60140361U | ||||
| JP55012595U |
Foreign References:
| WO2002013290A1 |
Attorney, Agent or Firm:
Hidetoshi Ueba
Takao Matsuyama
Go Sakane
Suzuki Kazuaki
Takao Matsuyama
Go Sakane
Suzuki Kazuaki