Title:
BATTERY CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2016024170
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a battery control device capable of accurately obtaining a present storage capacity of a battery even in a state where a current flows, and correctly determining deterioration of the battery.SOLUTION: A battery control device 100 of the present invention estimates, in a state where a current flows into a battery 111, a present storage capacity Q of the battery. A current value of the battery, a battery voltage, and a battery temperature are measured at first timing and second timing when the current value falls within a range of a predetermined variation range for a predetermined period of time, and a first power storage quantity SOCv1 and second power storage quantity SOCv2 are calculated. A voltage base power storage quantity difference ΔSOCv is calculated from the first power storage quantity and second power storage quantity, and a current base power storage quantity difference ΔSOCi is calculated on the basis of a current integrated quantity and initial power storage capacity. A capacity degradation rate SOH and power storage quantity Q of the battery are calculated on the basis of the voltage base storage quantity difference ΔSOCv and current base power storage quantity difference ΔSOCi.SELECTED DRAWING: Figure 3
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Inventors:
IGARASHI NAOYUKI
Application Number:
JP2014150899A
Publication Date:
February 08, 2016
Filing Date:
July 24, 2014
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
G01R31/36; H01M10/44; H01M10/48; H02J7/00
Domestic Patent References:
| JP2012058028A | 2012-03-22 | |||
| JP2014119394A | 2014-06-30 | |||
| JP2009121931A | 2009-06-04 |
Foreign References:
| WO2012120620A1 | 2012-09-13 |
Attorney, Agent or Firm:
Yusuke Hiraki
Sekiya Mitsuo
Toshiaki Watanabe
Sekiya Mitsuo
Toshiaki Watanabe