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:
Feb. 19, 2008
Filed:
Jan. 22, 2003
Applicants:
Hidenori Yamaji, Tokyo, JP;
Soichi Sato, Tokyo, JP;
Yoshitaka Narukawa, Kanagawa, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 5/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power control unit that can perform preventing a secondary battery from generating heat and preventing power supply from being suddenly shut off. Supply of power from a secondary battery to a system unit is controlled by a power control unit. At this time, the power control unit successively monitors a cell temperature of the secondary battery, and requests the system unit to switch to a power saving mode when the cell temperature exceeds a predetermined alarming temperature which is preset.