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:
Aug. 02, 2016
Filed:
Oct. 28, 2011
Takayuki Hattori, Kasai, JP;
Takenori Kimura, Naruto, JP;
Yasuhiro Yamauchi, Kasai, JP;
Toshiyuki Nohma, Kobe, JP;
Takayuki Hattori, Kasai, JP;
Takenori Kimura, Naruto, JP;
Yasuhiro Yamauchi, Kasai, JP;
Toshiyuki Nohma, Kobe, JP;
Sanyo Electric Co., Ltd., Daito-shi, JP;
Abstract
A prismatic secondary battery is provided with a negative/positive electrode collector (), which are disposed on either one of a wound negative/positive electrode substrate exposed portion (), and a negative/positive electrode collector receiving member () which is disposed on another surface. At least one of the negative/positive electrode collector has a recess portion () formed in part on a surface on the side not facing the negative/positive electrode substrate exposed portions so as to be thinner than the thickness of the other portion. Resistance welding is carried out in this recessed part, thereby a large welding nugget is formed between the negative/positive electrode exposed portion and the negative/positive electrode collector.