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. 25, 2014
Filed:
Jan. 14, 2011
Toshiyuki Oga, Tokyo, JP;
Toshiyuki Oga, Tokyo, JP;
Lenovo Innovations Limited (Hong Kong), Quarry Bay, HK;
Abstract
In an electric power supply system, a plurality of batteries () are connected in series by a switch group (toto), and a higher voltage and a lower voltage are output through a terminal and a VOL terminal, respectively, and are respectively converted in the voltage thereof by two step-down DC-DC inverters (). During a discharge operation upon a serial connection, remaining content of the batteries is measured in a period other than the period of discharge from the batteries (), and the connection mode of the serial connection is controlled based on the remaining content, to control the discharge of the respective batteries up to the discharge capacity.