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:
Apr. 13, 2015
Hitachi, Ltd., Tokyo, JP;
Mitsutoshi Honda, Tokyo, JP;
Takeshi Inoue, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A battery system includes a plurality of battery packs connected in parallel each including a switch and a battery connected to the switch in series and a battery state determining unit determining a state of the battery. The battery state determining unit includes a disconnection determining unit controlling disconnection of the switch and a switch controller controlling open and close of the switch in accordance with a result of determining the state. The disconnection determining unit calculates allowable stop and demanded stop periods of the battery packs on the basis of the past data, season data, and allowable currents of the batteries and transmits data to the switch controller when the demanded stop period is smaller than the allowable stop period, and the switch controller makes the switch in an open state.