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:
Mar. 24, 1987
Filed:
Jan. 13, 1986
Applicant:
Inventor:
Yasuo Ando, Tokyo, JP;
Assignee:
Kabushiki Kaisha Meidensha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ;
U.S. Cl.
CPC ...
429105 ; 429146 ; 429147 ; 429192 ;
Abstract
A secondary battery prevents a localized formation of dendritic metal zinc during a charging and increases a current efficiency as far as possible. The secondary battery includes a negatively active material of a metallic ion, a positive electrode, a negative electrode and a separator having an metallic-ion-permeable sheet, a plurality of projections formed with a nonsymmetrical shape on opposite sides of the sheet and a diffusing means for diffusing a flow of zinc ion current flowing around the projection, and the diffusing means is provided in a vicinity of a connecting portion of the sheet and the projection.