Title:
CAPACITY RECOVERY DEVICE, SECONDARY BATTERY SYSTEM, AND CAPACITY RECOVERY METHOD
Document Type and Number:
WIPO Patent Application WO/2022/244561
Kind Code:
A1
Abstract:
The present invention enables appropriate recovery of the capacity of a secondary battery by a capacity recovery device (550). For that purpose, the capacity recovery device (550) comprises: a capacity recovery processing unit (576) for performing a capacity recovery process of a secondary battery (510) in at least one cycle composed of a discharge period in which discharge current flows between a positive electrode terminal (502) and a negative electrode terminal (503) of the secondary battery (510), and an interval period in which a portion between the positive electrode terminal (502) and the negative electrode terminal (503) is opened or the discharge current is reduced as compared with the discharge period; and a capacity recovery interruption unit (578) for interrupting the capacity recovery process in accordance with the change state in battery voltage (Ev) of the secondary battery (510) in the capacity recovery process.
Inventors:
HONKURA KOHEI (JP)
ITO SHOTA (JP)
KAWAJI JUN (JP)
ITO SHOTA (JP)
KAWAJI JUN (JP)
Application Number:
PCT/JP2022/017682
Publication Date:
November 24, 2022
Filing Date:
April 13, 2022
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H02J7/00; H01M10/44; H01M10/48
Foreign References:
| JP2003036891A | 2003-02-07 | |||
| JP2019106333A | 2019-06-27 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
Download PDF:
Previous Patent: CONTROL DEVICE FOR ENERGY STORAGE CELL, ENERGY STORAGE DEVICE, AND CONTROL METHOD
Next Patent: ELECTROMAGNETIC FUEL INJECTION VALVE
Next Patent: ELECTROMAGNETIC FUEL INJECTION VALVE