The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 2020
Filed:
Sep. 17, 2015
Sanyo Electric Co., Ltd., Daito-shi, Osaka, JP;
Masato Fujikawa, Osaka, JP;
Tomohiko Yokoyama, Osaka, JP;
Keisuke Shimizu, Osaka, JP;
Takeshi Enomoto, Osaka, JP;
SANYO Electric Co., Ltd., Daito-shi, JP;
Abstract
A battery includes a bottomed cylindrical case body that accommodates an electrode body and a bottom-portion insulating plate () that is disposed between the electrode body and a bottom portion of the case body. The bottom portion of the case body has a gas discharge port that opens when an internal pressure of the battery reaches a predetermined pressure. The bottom-portion insulating plate () has a through hole. An aperture ratio, which is a ratio of an area of the through hole with respect to a total area of the insulating plate, is greater than or equal to 10% and less than or equal to 40%. A Young's modulus of the bottom-portion insulating plate at 25° C. is 10 GPa or greater.