Title:
CHARGE CONTROL DEVICE AND CHARGE CONTROL METHOD
Document Type and Number:
Japanese Patent JP2022143693
Kind Code:
A
Abstract:
To obtain an optimal charge termination voltage corresponding to the performance of a secondary battery, in a simple method based on a temperature and a state of charge of the secondary battery and a preset formula, and to perform swelling prevention management for the secondary battery with high accuracy.SOLUTION: A charge control device is provided with a charge control unit 104 that sets, on the basis of a size of a counted value accumulated in a storage unit 103, a charge termination voltage for charging a secondary battery so that the charge termination voltage stepwisely becomes lower as the counted value becomes larger. A calculation unit 102 for calculating the counted value sets one or more formulas for calculating the counted value of the secondary battery on the basis of a temperature and a charging rate detected from the secondary battery.SELECTED DRAWING: Figure 1
Inventors:
TAKAHASHI TATSU
Application Number:
JP2021044348A
Publication Date:
October 03, 2022
Filing Date:
March 18, 2021
Export Citation:
Assignee:
NEC PLATFORMS LTD
International Classes:
H02J7/00; H01M10/48; H02J7/04
Domestic Patent References:
| JP2020068628A | 2020-04-30 | |||
| JP2002236154A | 2002-08-23 | |||
| JP2020038138A | 2020-03-12 | |||
| JP2015118024A | 2015-06-25 | |||
| JPH0668912A | 1994-03-11 |
Foreign References:
| WO2008108102A1 | 2008-09-12 | |||
| WO2019016998A1 | 2019-01-24 | |||
| WO2012095894A1 | 2012-07-19 |
Attorney, Agent or Firm:
Sumio Tanai
Ryuichiro Mori
Yasushi Matsunuma
Eisuke Ito
Ryuichiro Mori
Yasushi Matsunuma
Eisuke Ito
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