Title:
BATTERY CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/085097
Kind Code:
A1
Abstract:
In the present invention, an appropriate upper-limit current value is set in consideration of a steep change in battery voltage in a large current region due to an ion concentration gradient in an a diffusion layer formed in the vicinity of an interface between an electrode and an electrolyte. An upper-limit current computation unit 152 is provided with: a concentration gradient estimation part 1523 for estimating, on the basis of a current flowing in a battery or on the basis of the current and a temperature, a lithium ion concentration gradient in a diffusion layer formed in the vicinity of an interface between an electrode and an electrolyte of the battery; and an upper-limit current determination part 1524 for determining an upper-limit current value of the battery on the basis of this lithium ion concentration gradient The upper-limit current determination part 1524 determines upper-limit current value such that an overcurrent of the battery corresponding to the lithium ion concentration gradient falls within a predetermined range.
Inventors:
NAKAO RYOHHEI (JP)
MORIKAWA HIROSHI (JP)
NAITOH MASASHI (JP)
SHIWA MASAFUMI (JP)
MATTHEY FANNY (JP)
MORIKAWA HIROSHI (JP)
NAITOH MASASHI (JP)
SHIWA MASAFUMI (JP)
MATTHEY FANNY (JP)
Application Number:
PCT/JP2019/039875
Publication Date:
April 30, 2020
Filing Date:
October 09, 2019
Export Citation:
Assignee:
VEHICLE ENERGY JAPAN INC (JP)
International Classes:
H01M10/44; B60L3/00; B60L53/00; H01M10/48; H02J7/00
Foreign References:
| JP2014157662A | 2014-08-28 | |||
| JP2013137935A | 2013-07-11 | |||
| JP2013137935A | 2013-07-11 |
Other References:
See also references of EP 3872920A4
Attorney, Agent or Firm:
SUNNEXT INTERNATIONAL PATENT OFFICE (JP)
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