Title:
CELL DEVICE, CHARGING CONTROL DEVICE, AND CHARGING CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2016/113791
Kind Code:
A1
Abstract:
In the present invention, a current exceeding the nominal capacity is set as a first charging current, and the measured voltage of a secondary cell is compared to a first threshold voltage that is lower than a specified charging voltage while performing constant-current charging using the set first charging current. If the measured voltage is greater than the first threshold voltage, the first charging current is reduced and defined as a second charging current, and the first threshold voltage is increased by a prescribed amount and defined as a second threshold voltage. The measured voltage of the secondary cell is compared to the second threshold voltage, which is lower than the specified charging voltage, while performing constant-current charging with the set second charging current. If the measured voltage is greater than the second threshold voltage, the second charging current is reduced and defined as a third charging voltage, and the second threshold voltage is increased by a prescribed amount and defined as a third threshold voltage. When an nth charging current is reduced to a prescribed value and the measured voltage is greater than the prescribed value, a control for ending fast charging is performed.
Inventors:
KANOMATA HIROTO (JP)
Application Number:
PCT/JP2015/005989
Publication Date:
July 21, 2016
Filing Date:
December 02, 2015
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H02J7/10; H01M10/42; H01M10/44; H01M10/48
Foreign References:
| JP2013062905A | 2013-04-04 |
Attorney, Agent or Firm:
SUGIURA, Masatomo et al. (JP)
Masatomo Sugiura (JP)
Masatomo Sugiura (JP)
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