STORAGE BATTERY STATE ESTIMATION DEVICE - MITSUBISHI ELECTRIC CORP

Title:

STORAGE BATTERY STATE ESTIMATION DEVICE

Document Type and Number:

WIPO Patent Application WO/2018/179562

Kind Code:

A1

Abstract:

To meet the demand for stable and accurate estimation of a battery state such as remaining capacity or capacity, this storage battery state estimation device (100) is provided with a current detection unit (102) for detecting the charge/discharge current of the storage battery (101) as a detected current, a voltage detection unit (103) for detecting the terminal voltage of the battery (101) as a detected voltage, an OCV-estimation-method SOC estimation unit (104) for calculating an OCV-estimation-method charge rate on the basis of the detected current and detected voltage, a current-integration-method parameter estimation unit (105) for estimating current-integration-method parameters including a capacity retention rate on the basis of the detected current and OCV-estimation-method charge rate, and a corrected SOC estimation unit (106) for calculating an estimated charge rate on the basis of the detected current, the OCV-estimation-method charge rate, and the current-integration-method parameters, and the storage battery state estimation device (100) estimates the charge rate of the storage battery to be the estimated charge rate.

Inventors:

TAKEGAMI TOMOKI (JP)
WADA TOSHIHIRO (JP)
KADOTA SEIGO (JP)

Application Number:

PCT/JP2017/039929

Publication Date:

October 04, 2018

Filing Date:

November 06, 2017

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

G01R31/36; H01M10/42; H01M10/48; H02J7/00

Domestic Patent References:

WO2016132813A1

2016-08-25

Foreign References:

JP5606933B2	2014-10-15
JP2014174050A	2014-09-22
JP2012185124A	2012-09-27
US20170003351A1	2017-01-05
JPS566933B2	1981-02-14
JPS5419832B2	1979-07-18

Other References: