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. 25, 2010
Filed:
Sep. 26, 2006
Ryoichi Nakashima, Tokyo, JP;
Hideyuki Sato, Chiba, JP;
Yukio Tsuchiya, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A battery device includes a battery cell including a cell terminal, a case that houses the battery cell, a battery terminal provided to the case and electrically connected to the cell terminal, and a control section that is housed in the case and allows and inhibits charge and discharge of the battery cell, wherein the control section includes a detection section that detects an output voltage value of the cell terminal at an interval, and assuming that the latest output voltage value detected by the detection section is V1, and the output voltage value detected by the detection section immediately before the latest output voltage value V1 is V0, the control section allows charge and discharge of the battery cell if |ΔV| (ΔV=V1−V0) is smaller than a reference value, and to inhibit charge and discharge of the battery cell if |ΔV| is equal to and greater than the reference value.