Japan, Sept. 16 -- TOYOTA MOTOR CORP,TOYOTA CENTRAL R&D LABS INC has got intellectual property rights for 'STORAGE BATTERY MANAGEMENT METHOD AND BATTERY MANAGEMENT SYSTEM.' Other related details are as follows:
Application Number: JP,2023-115766
Category (FI): H02J7/82,G01R31/367,H01M10/48@P,H02J7/00@X,H02J7/40,H02J7/50,H02J7/80,G01R31/3842,G01R31/388,G01R31/396,H02J7/00
Stage: PROBLEM TO BE SOLVED: To reduce a calculation load on a processor while estimating an SOC of a storage battery with high accuracy.SOLUTION: A positive electrode active material includes: a rich phase in which charge carriers are high in content; a poor phase in which charge carriers are low in content; and a two-phase coexistence phase in which the rich phase and the poor phase coexist. A method of managing a battery 10 includes, in a multi-particle model in which a plurality of particles each distinguished by a particle number indicating a reaction sequence of the positive electrode active material represents the positive electrode active material, assuming that charge carriers are equal in content among one or more particles belonging to each of the rich phase, the poor phase, and the two-phase coexistence phase, a step of calculating overvoltage of each of the particles for each of the phases; a step of calculating reaction current density on the basis of the overvoltage for each of the phases; and a step of estimating an SOC of a storage battery on the basis of the reaction current density in each of the phases.SELECTED DRAWING: Figure 16 (Grant)
Filing Date: July 14, 2023
Publication Date: Jan. 24, 2025
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
