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.

Date of Patent:
Oct. 30, 2001

Filed:

Mar. 22, 1999
Applicant:
Inventors:

Tomoyuki Ohta, Tokyo, JP;

Masato Shirakata, Tokyo, JP;

Hajime Satoh, Kanagawa, JP;

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/02 ; H01M 4/60 ; H01M 4/62 ; H01M 6/04 ; H01M 1/012 ;
U.S. Cl.
CPC ...
H01M 4/02 ; H01M 4/60 ; H01M 4/62 ; H01M 6/04 ; H01M 1/012 ;
Abstract

An active material free part of a positive electrode is coated with an over-coat material, wherein the over-coat material has at least one of the following properties: suppression of heat transfer from the second part of the electrode to the separator; reduction of a heat transfer rate from the second part of the electrode to the separator; prevention of transfer of excess heat from the second part of the electrode to the separator; electrical isolation of the second part of the electrode from the separator; prevention of charges generated in the first active material from becoming concentrated in the second part of the electrode and discharged from the second part; and prevention of the separator from being melted by a current discharge from or into the second part of the electrode through the separator until the current discharge is shut down by a fuse function of the separator.


Find Patent Forward Citations

Loading…