Title:
BATTERY STATE ESTIMATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/111231
Kind Code:
A1
Abstract:
Provided is a battery state estimation device capable of accurately estimating the internal state of a battery in consideration of a slow response portion of the battery.
The battery state estimation device comprises: a charge/discharge current detection unit; a terminal voltage detection unit; an equivalent circuit model having fast and slow response portions of a battery; a sequential parameter estimation unit for performing, based on a charge/discharge current value and a terminal voltage value, a sequential parameter estimation by using only the fast response portion of the response portions; a constant setting unit for setting a constant representing resistance and the capacitance of a capacitor in the slow response portion of the equivalent circuit model; a plurality of multiplication units for multiplying each of the parameter estimated in the sequential parameter estimation unit and the constant by the charge/discharge current value; and an addition unit for adding these multiplied values to obtain the overvoltage value of the battery.
Inventors:
ITABASHI KINNOSUKE (JP)
ADACHI SHUICHI (JP)
ADACHI SHUICHI (JP)
Application Number:
PCT/JP2012/007761
Publication Date:
August 01, 2013
Filing Date:
December 04, 2012
Export Citation:
Assignee:
CALSONIC KANSEI CORP (JP)
UNIV KEIO (JP)
UNIV KEIO (JP)
International Classes:
G01R31/36; H01M10/48; H02J7/00
Domestic Patent References:
| WO2012035868A1 | 2012-03-22 |
Foreign References:
| JP2010135075A | 2010-06-17 |
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
Kenji Sugimura (JP)
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Claims: