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:
Aug. 17, 2010
Filed:
Nov. 08, 2007
Junya Yano, Kasai, JP;
Junya Yano, Kasai, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A car power source apparatus includes a battery array that has a plurality of battery units connected in series, a battery over-charge and over-discharge detection circuit, selection switches that sequentially input battery unit voltages to the over-charge and over-discharge detection circuit, a reference voltage circuit that inputs reference voltages to the over-charge and over-discharge detection circuit, and a control circuit that controls selection switches and the reference voltage circuit. The control circuit controls the selection switches to input battery unit voltages to the over-charge and over-discharge detection circuit to determine over-charge and over-discharge. Further, the control circuit controls selection switches not to input battery unit voltages to the over-charge and over-discharge detection circuit, but controls input of reference voltages to the over-charge and over-discharge detection circuit from the reference voltage circuit to confirm the operating condition of the over-charge and over-discharge detection circuit.