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:
May. 23, 2017
Filed:
Nov. 23, 2011
Masaru Takagi, Toyota, JP;
Masaru Takagi, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Abstract
A secondary battery includes, in a battery case, an electrode body having an electrode sheet, a current collecting member including a weld part ultrasonic welded to a current collecting foil of the electrode sheet, and a pressure-type current interrupt mechanism electrically connected to the current collecting member. The current interrupt mechanism has a first valve element integrated with the current collecting member and a second element body, both joined at a joint portion. Of the current collecting member, the first valve element, and the second valve element, at least a part between the weld part and the joint portion is made of damping metal. A method of manufacturing this secondary battery includes: a step of forming a structure in which the first and second valve elements are joined at the joint portion; and a step of thereafter ultrasonic welding the current collecting foil and the weld part.