Title:
APPARATUS FOR ESTIMATING INTERNAL STATUS OF SECONDARY CELL AND ITS METHOD
Document Type and Number:
Japanese Patent JP2006105823
Kind Code:
A
Abstract:
To accurately estimate the internal status of secondary cells through the use of an adaptive digital filter.
A cell ECU executes a program including both a step (S100) for determining whether charge and discharge currents of a secondary cell have waveforms of low computation precision or not through the use of FFT etc. and a step (S200) for changing the charge and discharge currents of the secondary cell only by the amount of a very small current by outputting a drive command to a motor ECU when the charge and discharge currents of the secondary cell have waveforms of low computation precision (S100; YES).
Inventors:
YONEDA OSAMU
Application Number:
JP2004293931A
Publication Date:
April 20, 2006
Filing Date:
October 06, 2004
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
G01R31/36; H01M10/48; H02J7/00
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Takao Matsuyama
Tadashi Muto
Toshio Morita
Takao Matsuyama
Tadashi Muto
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