Title:
CHARGING CONTROL SYSTEM, CHARGING CONTROL METHOD, AND ELECTRONIC EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2018/229597
Kind Code:
A1
Abstract:
[Abstract] Because the internal resistance of a secondary cell increases when the secondary cell deteriorates, a deteriorated secondary cell has high terminal voltage during charging and low terminal voltage during discharging, and thus a difference arises from the terminal voltage of an undeteriorated secondary cell. According to the present invention, the level of deterioration and estimated value of a plurality of secondary cells are calculated using a first neural network, and variation in the level of deterioration is reduced by slowing the charging rate for secondary cells having high deterioration so as not to enter a fully charged state, and speeding up the charging rate for secondary cells having low deterioration so as to enter a fully charged state. The secondary cells having a high level of deterioration are set to a low charging termination voltage so as not to enter a fully charged state, and the charging conditions are selected on the basis of a calculation in which a second neural network is used.
Inventors:
TAJIMA RYOTA (JP)
TOYOTAKA KOUHEI (JP)
ISA TOSHIYUKI (JP)
SHISHIDO HIDEAKI (JP)
TOYOTAKA KOUHEI (JP)
ISA TOSHIYUKI (JP)
SHISHIDO HIDEAKI (JP)
Application Number:
PCT/IB2018/054029
Publication Date:
December 20, 2018
Filing Date:
June 06, 2018
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
H02J7/02; H01M10/48; G01R31/36
Domestic Patent References:
| WO2017085598A1 | 2017-05-26 |
Foreign References:
| JP2007259612A | 2007-10-04 | |||
| JP2017026616A | 2017-02-02 | |||
| JP2006220616A | 2006-08-24 |
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