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. 31, 2004
Filed:
Mar. 16, 2001
Hideki Okajima, Nishinomiya, JP;
Takashi Oda, Kato-gun, JP;
Yukichi Uesugi, Tuna-gun, JP;
Hitoshi Tanaka, Mihara-gun, JP;
Yoshinobu Okumura, Sumoto, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
In the method for manufacturing the battery module according to this invention, after a pair of welding upper/lower electrodes or are arranged in contact on the cases of adjacent unit cells of a plurality of unit cells aligned in a line, a welding current is passed between the pair of welding upper electrodes from a welding power source while both ends of the unit cells are pressurized by pressurizing members under a prescribed pressure. Thus, Joule heat is generated at the contact portion between the bottom of the outer case of the unit cell and the positive polarity terminal of the unit cell so that the contact portion melts. Accordingly, the bottom of the outer case of the unit cell and the positive polarity terminal of the unit cell are welded to each other at the contact portion.