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:
Jul. 05, 2011
Filed:
Mar. 17, 2008
Yoshinao Tatebayashi, Yokohama, JP;
Yasuhiro Harada, Yokohama, JP;
Norio Takami, Yokohama, JP;
Nobuo Shibuya, Hiratsuka, JP;
Yoshinao Tatebayashi, Yokohama, JP;
Yasuhiro Harada, Yokohama, JP;
Norio Takami, Yokohama, JP;
Nobuo Shibuya, Hiratsuka, JP;
Kabushiki Kaisha Tohshiba, Tokyo, JP;
Abstract
A protection device for an assembled battery includes a sampling unit which individually samples voltages of batteries of the assembled battery to generate sampled voltages, a holding unit which holds the sampled voltages to generate a plurality of holding voltages, a multiplexer which sequentially reads the holding voltages and outputs each voltage to a common output node, a measuring unit configured to measure the individual voltages and the state of charges of the batteries based on a voltage of the node in a measuring period within a constant measuring cycle, and a control unit configured to turn on/off the sample switches at the same time within the measuring period and repeatedly turn on/off at least one sample switch selected from the plurality of sample switches in accordance with the state of charge in a term other than the measuring period.