Title:
ELECTRICITY STORAGE ELEMENT MANAGEMENT DEVICE, BATTERY, AND MANAGEMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2019/093349
Kind Code:
A1
Abstract:
Provided is a management device (BMS 40) for an assembled battery 30 which uses a positive electrode active material containing lithium iron phosphate and having an electrically conductive layer formed on a surface thereof, the BMS 40 being provided with: a current sensor 43 which measures a current flowing through the assembled battery 30; a voltage sensor 45 which measures a voltage of the assembled battery 30; and a management unit 42. When a state in which the current value measured by means of the current sensor 43 is less than a reference value is defined as a pause state of the assembled battery 30, the management unit 42, when the assembled battery 30 has entered the pause state, performs: a discharge process (S101) for causing the assembled battery 30 to discharge; a post-discharge measurement process (S102) for measuring the voltage by means of the voltage sensor 45 after the assembled battery 30 has been discharged in the discharge process; and a first estimation process (S103) of estimating the SOC of the assembled battery 30 on the basis of the voltage measured in the post-discharge measurement process and OCV-SOC characteristics 62 after the discharge.
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Inventors:
NAKAMOTO TAKESHI (JP)
Application Number:
PCT/JP2018/041269
Publication Date:
May 16, 2019
Filing Date:
November 07, 2018
Export Citation:
Assignee:
GS YUASA INT LTD (JP)
International Classes:
H01M10/48; G01R31/36; H01M4/36; H01M4/58; H01M10/0525; H01M10/44; H02J7/00
Domestic Patent References:
| WO2017010475A1 | 2017-01-19 |
Foreign References:
| JP2014059206A | 2014-04-03 |
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