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. 01, 2005
Filed:
Feb. 06, 2004
Tetsuya Kobayashi, Anjo, JP;
Masaya Itou, Toyota, JP;
Tetsuya Kobayashi, Anjo, JP;
Masaya Itou, Toyota, JP;
Denso Corporation, Kariya, JP;
Abstract
A discharging circuit, connected to both terminals of a lithium battery, includes a first discharge resistor, a second discharge resistor, and a transistor for occasionally discharging the lithium battery to reduce the SOC difference among respective lithium batteries constituting a combination battery. A voltage detecting circuit detects a terminal voltage of the lithium battery via the first discharge resistor. A discharge controller judges a failure occurring in the discharging circuit based on a comparison between a terminal voltage value detected when the transistor is turned on and a terminal voltage value detected when the transistor is turned off.