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:
Nov. 18, 1997
Filed:
Apr. 29, 1996
Applicant:
Inventors:
Kazuo Oosaki, Mihara-gun, JP;
Takamasa Yamazoe, Sumoto, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J / ; H02J / ; H01M / ; H01M / ;
U.S. Cl.
CPC ...
320 35 ; 320-2 ; 429 62 ; 429 91 ;
Abstract
The dangers of excessive battery current and battery heating are effectively prevented by maintaining a heat sensitive cut-off device in the cut-off state as long as an over-current situation exists. An inside case positioned in the enclosed space between the batteries and the outside shell houses both the cut-off device and a parallel connected heating resistor. Double insulation allows the heating resistor to efficiently transfer Joule heat to the adjacent cut-off device. Effective use of space and heat transfer properties also reduces post-cut-off battery current and results in no battery pack volume increase.