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:
Feb. 27, 2018
Filed:
Nov. 15, 2013
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Shou Saimaru, Hitachinaka, JP;
Yukihiro Soga, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Ibaraki, JP;
Abstract
A square battery includes a battery can surrounded by four side wall portions, and having an upper end portion on one side in a height direction of the side wall portions opened and a bottom portion in a lower end portion on the other side in the height direction, and a battery lid welded to the upper end portion to seal the battery can, wherein between the battery can and the battery lid, a lateral boundary surface in a lateral direction crossing the height direction of the side wall portions and a vertical boundary surface in a vertical direction crossing the lateral boundary surface and along the height direction of the side wall portions are formed, at least a part of the lateral and vertical boundary surfaces being welded by a laser radiated in the vertical direction along the height direction of the side wall portions.