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:
Apr. 16, 2019
Filed:
Mar. 27, 2014
Nec Corporation, Tokyo, JP;
Junichi Miyamoto, Tokyo, JP;
Shingo Takahashi, Tokyo, JP;
Yuan Luo, Tokyo, JP;
Nobuhide Yoshida, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A charge and discharge device () includes: a battery unit () in which m (m is an integer of 3 or more) battery cells () that are connected in series are grouped into plural groups () including n (n is an integer equal to or larger than 2 and smaller than m) battery cells () that are continuously arranged and a part of the battery cells () that belong to a certain group is shared by a different group; a cell balance unit () that is provided for each group () and uniformizes voltages of the battery cells () that belong to the group (); and a control unit () that stops the operation of the cell balance unit (), when a voltage difference of the battery cells () that belong to an arbitrary one of the groups () is within a predetermined value, and when a total average voltage in all the battery cells () and a partial average voltage which is an average voltage of the battery cells () that belong to the arbitrary group () satisfy a specific condition, the cell balance unit () corresponding to the arbitrary group ().