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:
Sep. 05, 2000
Filed:
Jun. 22, 1998
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi-gun, JP;
Abstract
A cylinder-shaped secondary battery includes a container, and a rolled electrode. The container includes a cylinder-shaped inner member, a cylinder-shaped outer member, and a pair of ring-shaped end plates. The electrode is accommodated in the container in an electrically insulating manner, rolled spirally, and has a pair of tabs and a hollow formed therein and extending in an axial direction thereof. Moreover, the electrode includes a positive electrode, a negative electrode and a separator disposed between the positive electrode and negative electrode so as to separate them. The inner member of the container has opposite ends and a hollow formed therein and extending in an axial direction thereof, and is disposed in the axially-extending hollow of the electrode. The outer member of the container has opposite ends, and is disposed on a centrifugal side of the electrode. The end plates of the container close the opposite ends of the inner and outer members, and are pierced through by terminals of the battery in an electrically insulating manner. Moreover, the end plates are bonded to the opposite ends of the inner member and/or the outer member by welding. The thus constructed battery has such good heat-radiating ability and high pressure resistance that it can stably carry out its functions.