Title:
BATTERY STATE ESTIMATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/143728
Kind Code:
A1
Abstract:
Provided is a battery state estimation device comprising an update unit. On the basis of the amount of change in the detected value of current that flows through a secondary battery, the update unit updates a charge transfer impedance model in a battery model for the secondary battery configured from a DC resistance model, the charge transfer impedance model, and a serial connection body for a diffusion impedance model so that a first relation between the current flowing through the secondary battery and the potential difference of a charge transfer resistor as defined by the Butler-Volmer equation approaches a second relation between the current value actually flowing through the secondary battery and the actual value of the potential difference of the charge transfer resistor. A state estimation unit estimates the state of the secondary battery on the basis of the battery model comprising the charge transfer impedance model that has been updated by the update unit.
Inventors:
KAWAI TOSHIYUKI (JP)
KATO KEIICHI (JP)
KOIKE YUUJI (JP)
KATO KEIICHI (JP)
KOIKE YUUJI (JP)
Application Number:
PCT/JP2016/056932
Publication Date:
September 15, 2016
Filing Date:
March 07, 2016
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01R31/36; H01M10/48; H02J7/00
Domestic Patent References:
| WO2011118080A1 | 2011-09-29 |
Foreign References:
| JP2008058278A | 2008-03-13 | |||
| US20160039419A1 | 2016-02-11 |
Attorney, Agent or Firm:
KIKUCHI, YASUHIRO (JP)
Yasuhiro Kikuchi (JP)
Yasuhiro Kikuchi (JP)
Download PDF: