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. 11, 2003
Filed:
Jun. 01, 2001
Applicant:
Inventors:
Masaki Hogari, Fukushima, JP;
Shuichiro Maekawa, Fukushima, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 7/00 ;
U.S. Cl.
CPC ...
H02J 7/00 ;
Abstract
A battery pack mounted to a predetermined apparatus to permit supply and output of power of a secondary battery cell between the battery pack and the apparatus, comprising: a plurality of field effect transistors for stopping charge or discharge current in response to a control signal; and a control circuit for controlling the charge or discharge current of the secondary battery cell by outputting control voltage for controlling the field effect transistors; wherein the control voltage is supplied to the respective gates of the plurality of field effect transistors through resistors of 10 [k&OHgr;] or more.