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:
Jun. 23, 2015
Filed:
Nov. 09, 2007
Shoji Imanaga, Hitachi, JP;
Kinya Aota, Hitachi, JP;
Yoshihisa Tsurumi, Hitachinaka, JP;
Masuhiro Onishi, Uji, JP;
Shoji Imanaga, Hitachi, JP;
Kinya Aota, Hitachi, JP;
Yoshihisa Tsurumi, Hitachinaka, JP;
Masuhiro Onishi, Uji, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Ibaraki, JP;
Abstract
A battery pack with a reduced resistance connection arrangement in which battery cells are arranged in rows in an insulating case and an electrode of each battery cell is coupled to an electrode of another battery cell through a connecting metallic plate. The connecting metallic plate is made of copper and is disposed on a positive electrode of one battery cell and a negative electrode of another battery cell to form a lap joint. Welds are formed in predetermined positions on the connecting metallic plate above the positive and negative electrodes by arc spot welding. The electrodes are formed of nickel-coated steel. The depth h of weld penetration in the weld is greater than the thickness Tof the connecting metallic plate and smaller than the thickness Tplus the thickness Tof one of the electrodes, that is, T<h≦(T+T×4/5).