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Title:
STORAGE BATTERY REMAINING QUANTITY ESTIMATION DEVICE, STORAGE BATTERY REMAINING QUANTITY ESTIMATION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/003377
Kind Code:
A1
Abstract:
The storage battery remaining quantity estimation device according to an embodiment of the present invention has a current correction unit, an SOC calculation unit, a voltage estimation unit, an SOC correction quantity determining unit, and a current error estimation unit. On the basis of a current value of a storage battery, and a current correction quantity, the current correction unit determines a corrected current value. On the basis of the corrected current value and an SOC correction quantity, the SOC calculation unit calculates an SOC estimation value of the storage battery. On the basis of a temperature value of the storage battery, the corrected current value, and the SOC estimation value, the voltage estimation unit determines a voltage estimation value of the storage battery. On the basis of comparison between the voltage value of the storage battery, and the voltage estimation value, the SOC correction quantity determining unit determines the SOC correction quantity. On the basis of the SOC correction quantity, the current error estimation unit determines the current correction quantity.

Inventors:
TOHARA MASAHIRO (JP)
KIUCHI MASAKO (JP)
KAWACHI SHUNSUKE (JP)
MIZUTANI MAMI (JP)
KOBAYASHI TAKENORI (JP)
Application Number:
PCT/JP2017/023914
Publication Date:
January 03, 2019
Filing Date:
June 29, 2017
Export Citation:
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Assignee:
TOSHIBA KK (JP)
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
G01R31/36
Foreign References:
JPH07263034A1995-10-13
JP5616464B22014-10-29
JP2008010420A2008-01-17
JP5393619B22014-01-22
JPS5616464B21981-04-16
JP2016224022A2016-12-28
JPS6055960B21985-12-07
Other References:
V POPH J BERGVELDPH L NOTTENPP L REGTIEN: "State-of-the-art of battery state-of-charge determination", MEAS. SCI. TECHNOL., vol. 16, 2005, pages R93 - R110
"Battery charge rate estimation for HEV/EV", CALSONIC KANSEI TECHNICAL REVIEW, vol. 10, 2013
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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