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:
May. 15, 2012
Filed:
Oct. 20, 2009
Applicant:
Yoshihisa Tange, Chiba, JP;
Inventor:
Yoshihisa Tange, Chiba, JP;
Assignee:
Seiko Instruments Inc., Chiba, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided is a battery state monitoring circuit including a control circuit that applies, to a gate of a signal output transistor provided at a terminal for transmitting an overcharge detection signal, a potential at which the signal output transistor is turned off at a voltage lower than a minimum circuit operating voltage. Accordingly, in a battery device that uses the cascade-connected battery state monitoring circuits, charge is inhibited securely even at a power supply voltage lower than the minimum circuit operating voltage.