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Patent Searching and Data


Title:
BATTERY MODULE
Document Type and Number:
WIPO Patent Application WO/2012/014350
Kind Code:
A1
Abstract:
Disclosed is a battery module in which a plurality of batteries are arranged on a matrix, wherein a group of series-connected batteries containing an abnormality can be reliably isolated from other battery groups and performance loss of the battery module as a whole is limited, even if an abnormality occurs in a battery forming part of the battery module, and a battery module is thereby provided having a high degree of safety. n series blocks (20) in which m unit cells (10) are connected in series are arranged in parallel. Adjacent unit cells (10) are connected in parallel by way of a first fuse link (30). One end of the series blocks (20) is connected to an input/output terminal (50) by way of a second fuse link (40). The m number of unit cells (10) and the n number of series blocks satisfy expression (1) and expression (2), namely (1) m≤1/2[Vc/Rc∙If1-Rf1/Rc+3] and (2) n≥(Vc+If2∙Rc)/[Vc-(m-1)If2∙Rc], where Vc and Rc are the electromotive force and internal resistance of the unit cells (10), Rf1 and If1 are the resistance and fusing current of the first fuse link (30), and If2 is the fusing current of the second fuse link (40).

Inventors:
NAKAGAWA, Takashi (())
中川貴嗣 (())
Application Number:
JP2011/002017
Publication Date:
February 02, 2012
Filing Date:
April 05, 2011
Export Citation:
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Assignee:
PANASONIC CORPORATION (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 〒5718501, JP)
パナソニック株式会社 (〒01 大阪府門真市大字門真1006番地 Osaka, 〒5718501, JP)
NAKAGAWA, Takashi (())
International Classes:
H01M2/10; H01M2/20; H01M2/34; H02J7/00; G01R31/36
Domestic Patent References:
WO2010008026A22010-01-21
Foreign References:
JPH05250979A1993-09-28
JPH10322915A1998-12-04
JP2004103483A2004-04-02
JP2005235738A2005-09-02
JP2004031268A2004-01-29
JP2002142353A2002-05-17
US7671565B22010-03-02
Other References:
See also references of EP 2600436A4
Attorney, Agent or Firm:
MAEDA, Hiroshi et al. (Osaka-Marubeni Bldg, 5-7Hommachi 2-chome, Chuo-ku, Osaka-sh, Osaka 53, 〒5410053, JP)
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Claims: