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BATTERY SYSTEM AND BATTERY EVALUATION METHOD

Foreign code F130007698
File No. S2013-0866-N0
Posted date Nov 6, 2013
Country WIPO
International application number 2012JP076217
International publication number WO 2013/054813
Date of international filing Oct 10, 2012
Date of international publication Apr 18, 2013
Priority data
  • P2011-226143 (Oct 13, 2011) JP
Title BATTERY SYSTEM AND BATTERY EVALUATION METHOD
Abstract

A battery system (1) provided with: a secondary battery (10) having a positive electrode (11), a negative electrode (15) and electrolytes (12, 14)

a storage unit (23) for storing pre-measured characteristic information regarding the secondary battery (10), including the initial resistance value and the evaluation frequency

a power unit (20) which applies an AC signal having the evaluation frequency stored in the storage unit (23) to the secondary battery (10)

a measurement unit (22) which measures the impedance of the solid electrolyte interface film (17) of the secondary battery (10) from the AC signal

and a calculation unit (24) which calculates the degree of deterioration and/or the depth of charge of the secondary battery (10) from the impedance and the characteristic information.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • WASEDA UNIVERSITY,
  • OSAKA TETSUYA,
  • MOMMA TOSHIYUKI,
  • YOKOSHIMA TOKIHIKO,
  • MUKOYAMA DAIKICHI,
  • NARA HIROKI
  • Inventor
  • OSAKA TETSUYA,
  • MOMMA TOSHIYUKI,
  • YOKOSHIMA TOKIHIKO,
  • MUKOYAMA DAIKICHI,
  • NARA HIROKI
IPC(International Patent Classification)
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