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:
Jun. 07, 2016
Filed:
Feb. 28, 2011
Ryouhei Nakao, Mito, JP;
Youhei Kawahara, Hitachi, JP;
Akihiko Kudou, Hitachinaka, JP;
Akihiko Emori, Hitachi, JP;
Kei Sakabe, Hitachi, JP;
Ryouhei Nakao, Mito, JP;
Youhei Kawahara, Hitachi, JP;
Akihiko Kudou, Hitachinaka, JP;
Akihiko Emori, Hitachi, JP;
Kei Sakabe, Hitachi, JP;
Hitachi Vehicle Energy, Ltd., Ibaraki, JP;
Abstract
In a battery device including a battery pack in which a plurality of cells are connected in series, there are provided a battery control circuit or a battery device capable of eliminating a fluctuation in the voltage or charged state which can occur between the cells, or preventing the cells from being maintained in an over-charged state for a long period. A plurality of cell groups each including a plurality of cells are connected in series to form a battery pack. Cell controller is provided to the respective cell groups operate with electricity supplied from the cell groups allocated thereto so as to monitor and control the state of the cells of the cell group. Battery pack controller controls the cell controller based on information from the plurality of cell controller.