Title:
BATTERY STATE ESTIMATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2017/135075
Kind Code:
A1
Abstract:
A battery model includes a serial connection body of: a direct-current resistance model; a charge-transfer resistance model derived from the Butler-Volmer equation; and a diffusion resistance model. This battery state estimation apparatus is provided with a storage unit and a parameter calculation unit. The storage unit stores information about each of a resistance parameter relating to the resistance component of the diffusion resistance model, a time constant parameter relating to the time constant of the diffusion resistance model, and a charge parameter of the change-transfer resistance model so as to be associated with the temperature information of a secondary battery. On the basis of a detected temperature value of the secondary battery and the stored information, the parameter calculation unit calculates each parameter corresponding to the detected temperature value. The parameter calculation unit sequentially identifies parameters used for state estimation through a Kalman filter by using the calculated parameters as initial values.
Inventors:
KAWAI TOSHIYUKI (JP)
KATO KEIICHI (JP)
KOIKE YUJI (JP)
TANAKA HIDEAKI (JP)
KONO SHUNTARO (JP)
KATO KEIICHI (JP)
KOIKE YUJI (JP)
TANAKA HIDEAKI (JP)
KONO SHUNTARO (JP)
Application Number:
PCT/JP2017/001984
Publication Date:
August 10, 2017
Filing Date:
January 20, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01R31/36; H01M10/48; H02J7/00
Domestic Patent References:
| WO2011118080A1 | 2011-09-29 | |||
| WO1989001169A1 | 1989-02-09 |
Foreign References:
| JP2015228326A | 2015-12-17 |
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
Download PDF: