Title:
電池システム
Document Type and Number:
Japanese Patent JP6834416
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a technology that can improve calculation accuracy of a cathode potential while considering a memory effect in a battery system including an alkaline secondary battery.SOLUTION: Battery system 200 comprises: a single cell 11 that is a nickel-hydrogen battery; and ECU 30 that controls charge and discharge of the single cell 11 by using a cathode potential Vand an anode potential Vof the single cell 11. The ECU 30 calculates hydrogen concentration inside a cathode active material 151 by using a battery model for estimating an internal behavior of the single cell 11, including an inter-terminal voltage V, a cathode open-circuit potential U, and an anode open-circuit potential Uof the single cell 11. The ECU 30 calculates, from the hydrogen concentration, an amount of memory that is an amount of change in potential of the cathode open-circuit potential Ucaused by a memory effect from an initial potential E, and calculates the cathode open-circuit potential Uby using the initial potential Eand the amount of memory M.SELECTED DRAWING: Figure 17
Inventors:
Kenji Takahashi
Tomoko Yamauchi
Tomoko Yamauchi
Application Number:
JP2016231931A
Publication Date:
February 24, 2021
Filing Date:
November 30, 2016
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
G01R31/367; G01R31/382; G01R31/387; H01M10/48; H02J7/00
Domestic Patent References:
| JP2016103449A | ||||
| JP201691978A | ||||
| JP2006194789A | ||||
| JP2007333447A | ||||
| JP200422322A | ||||
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Foreign References:
| WO2013105140A1 | ||||
| US20160023568 |
Attorney, Agent or Firm:
Fukami patent office