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Title:
CIRCUIT FOR BALANCE-CHARGING SERIAL STORAGE CELLS AND METHOD FOR BALANCE-CHARGING SERIAL STORAGE CELLS
Document Type and Number:
WIPO Patent Application WO/2012/127830
Kind Code:
A1
Abstract:
A coil for introducing an electrical charge to serial cells and a coil for balancing the voltage between the cells are shared, making the overall configuration of a circuit more compact. A coil is provided so as to be shared by first and second storage cells. One of the storage cells is charged upon a coil being electrically connected thereto, whereupon the other storage cell is charged upon the coil being electrically connected thereto. A plurality of switches for switching the path of a charging current flowing to the coil are provided. In a first charging period, there is formed a path over which the charging current flows to a reference voltage via the coil. In a second charging period, there is formed a path over which the charging current flows from the coil to the second cell. In a third charging period, there is formed a path over which the charging current flows to a reference voltage via the coil. In a fourth charging period, one end of the coil and one end of the first cell are conductively connected, the other end of the coil and the other end of the first cell are conductively connected, and a path of the charging current flowing from the coil to the first cell is formed.

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Inventors:
AIURA MASAMI (JP)
Application Number:
PCT/JP2012/001842
Publication Date:
September 27, 2012
Filing Date:
March 16, 2012
Export Citation:
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Assignee:
ASAHI KASEI MICRODEVICES CORP (JP)
AIURA MASAMI (JP)
International Classes:
H02J7/02; H01M10/44
Foreign References:
JP2010522528A2010-07-01
JP2009284591A2009-12-03
JP2001185229A2001-07-06
Other References:
See also references of EP 2610998A4
Attorney, Agent or Firm:
MORI, Tetsuya et al. (JP)
Tetsuya Mori (JP)
Download PDF:
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Claims:



 
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