Title:
METHOD FOR ASCERTAINING CAPACITY OF STORAGE BATTERY, AND CAPACITY-MONITORING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/225032
Kind Code:
A1
Abstract:
Provided are a method for ascertaining the capacity of a storage battery, and a capacity-monitoring device, in which specific unit batteries that constitute a storage battery do not over-discharge and adversely affect the service life of the storage battery. An industrial computer 8 controls a charging-and-discharging device 3, prevents constant-current discharge at a specific discharge termination voltage (e.g., 1.86 [V]/cell) in a prescribed range (e.g., 1.9-1.8 [V]/cell) that is higher than a stipulated discharge termination voltage of 1.8 [V]/cell, and carries out a simple capacity test. Each of a discharge termination voltage correction coefficient α, a temperature correction coefficient β, and a capacity deterioration correction coefficient γ is multiplied by a capacity Q [Ah] obtained through the simple capacity test, and an SOH [Ah] obtained through a formal capacity test performed by preventing constant-current discharge at the stipulated discharge termination voltage of 1.8 [V]/cell is estimated.
Inventors:
DOBASHI AKIRA (JP)
MIURA MASARU (JP)
MIURA MASARU (JP)
Application Number:
PCT/JP2018/041411
Publication Date:
November 28, 2019
Filing Date:
November 07, 2018
Export Citation:
Assignee:
FURUKAWA BATTERY CO LTD (JP)
International Classes:
G01R31/36; H01M10/48; H02J7/00
Domestic Patent References:
| WO2016129212A1 | 2016-08-18 |
Foreign References:
| JP2009042182A | 2009-02-26 | |||
| JP2014119265A | 2014-06-30 | |||
| JP2002236154A | 2002-08-23 |
Attorney, Agent or Firm:
MINEGISHI Takeshi (JP)
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