Title:
BATTERY STATE ESTIMATION DEVICE
Document Type and Number:
Japanese Patent JP2018096954
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To achieve with simple means standardization of an element constant of a battery model to a value within a prescribed range when estimating a state parameter of a battery equivalent circuit model by using a Kalman filter, and stabilization of a parameter value in the estimation by the Kalman filter by curtailing impact of a battery temperature or a battery soundness in the standardization.SOLUTION: A battery state estimation device includes a state estimation part 11 for estimating a resistance of a battery equivalent circuit model 33 and a parameter of a capacitor by a Kalman filter 25. The state estimation part includes a parameter conversion part 27 for adding or subtracting a parameter conversion coefficient to or from the parameter so as to standardize it to a value within a prescribed range and a parameter conversion coefficient calculation part 13 for calculating the parameter conversion coefficient. The parameter conversion coefficient calculation part changes the parameter conversion coefficient on the basis of at least either a battery temperature or a battery soundness.SELECTED DRAWING: Figure 1
More Like This:
Inventors:
HONGO HIROO
Application Number:
JP2016244941A
Publication Date:
June 21, 2018
Filing Date:
December 16, 2016
Export Citation:
Assignee:
MITSUBISHI MOTORS CORP
International Classes:
G01R31/36; H01M10/48; H02J7/00
Attorney, Agent or Firm:
Seishin ip patent business corporation
Previous Patent: 撮像装置、表示システムおよび方法
Next Patent: A Borehole detecting device and a Borehole detecting method of a casting article
Next Patent: A Borehole detecting device and a Borehole detecting method of a casting article