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. 23, 2000
Filed:
Jun. 10, 1998
Sony Corporation, Tokyo, JP;
Abstract
A secondary battery pack includes first and second terminal portions connected to a load device or a charging device, a secondary battery, a voltage detecting means for detecting a voltage applied to the secondary battery or a battery voltage of the secondary battery, a switch means connected between the first or the second terminal portion and the secondary battery and set to its disconnected state when the voltage detecting means detects a first voltage, and a charging circuit connected between the first or the second terminal portion and the secondary battery and controlled based on a voltage detected by the voltage detecting means with reference to a second voltage lowered by a predetermined voltage as compared with the first voltage.