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:
Dec. 29, 2015
Filed:
Oct. 24, 2013
Hitachi Information & Telecommunication Engineering, Ltd., Yokohama-shi, JP;
Kimiaki Taniguchi, Yokohama, JP;
Fumikazu Takahashi, Yokohama, JP;
Yusuke Katsuyama, Yokohama, JP;
Yoshihide Takahashi, Yokohama, JP;
Daisuke Ishida, Yokohama, JP;
Akinori Uchida, Yokohama, JP;
Susumu Nagafuchi, Yokohama, JP;
Hitachi Information & Telecommunication Engineering, Ltd., Nishi-Ku, Yokohama, JP;
Abstract
A power storage system is provided with a battery and a battery charger which charges a battery pack having a battery voltage and current detection circuit. A charge circuit is structured such as to acquire terminal voltage information of the battery from a battery voltage detection circuit of the battery pack in a charging process, carry out a constant current charge control in a state in which the terminal voltage of the battery is equal to or lower than a previously determined reference voltage value of the battery, and switch to a constant voltage charge control maintaining the output voltage of the charge circuit in the case that the terminal voltage of the battery goes beyond the reference voltage value, thereby carrying on the charge until the battery is fully charged. Therefore, the power storage system can accurately charge the battery to a prescribed amount safely.