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:
Jan. 30, 2001
Filed:
Jul. 31, 1998
Masahiko Yoshida, Osaka, JP;
Fumio Daio, Nara, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A battery has an organic electrolyte, a negative electrode having at least one metal out of alkaline metal and alkaline metal alloy, and a positive electrode including a conductive core having at least one metal out of porous metal plate and metal mesh, wherein an active material covers the core. At least a part of one side of the core is exposed from the active material at a position confronting the negative electrode, and the width of narrowest part of the metal is greater than the thickness of the negative electrode. In this constitution, the discharge reaction is delayed in the exposed portion of the core of the positive electrode. By this delay in discharge reaction, the electric connection of the negative electrode is maintained up to the end of discharge. Hence, voltage drop at the end of discharge is suppressed. As a result, the battery having an excellent discharge capacity up to the end of the discharge is obtained.