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. 15, 2017
Filed:
Feb. 08, 2013
Tadahiro Yoshida, Kanagawa, JP;
Tadahiro Yoshida, Kanagawa, JP;
NEC ENERGY DEVICES, LTD., Kanagawa, JP;
Abstract
A measurement unit () measures voltages and currents of battery cells (). A battery control unit () calculates a present estimation value of a residual capacity of the battery cells () by integrating the currents. The voltages of the battery cells () are set to a reference voltage value Vserving as a trigger of a process of correcting the estimation value of the residual capacity and an alarm voltage value Vwhich is a voltage higher than the reference voltage value. In addition, the battery control unit () continues discharge of all the battery cells (), as it is, when an alarm condition in which a voltage of a minimum capacity cell is equal to or less than the alarm voltage value is not satisfied, and outputs a first signal when the voltage of the minimum capacity cell satisfies the alarm condition.