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:
Apr. 21, 2025
Filed:
Dec. 02, 2019
Vehicle Energy Japan Inc., Hitachinaka, JP;
Nobuyoshi Tanaka, Hitachinaka, JP;
Kazuaki Urano, Hitachinaka, JP;
Tatsuhiko Kawasaki, Hitachinaka, JP;
Vehicle Energy Japan Inc., Hitachinaka, JP;
Abstract
Provided is a busbar capable of keeping a joint strength high at a joint between dissimilar metals. The busbar () joins terminals of a plurality of battery cells, the terminals each including a dissimilar metal. The busbar includes: a copper portion () to be connected to a first terminal () of a first battery; an aluminum portion () to be connected to a second terminal () of a second battery; and a joint () including the copper portion bonded to the aluminum portion. The aluminum portion is placed so as not to overlap the bonding region between the first terminal and the copper portion, and has arms () extending in a direction from the second terminal to the first terminal. The joint includes the copper portion bonded to the arms, and the arms have a width such that a proximal end portion is wider than a distal end portion of the arms.