Japan, Sept. 16 -- TOYOTA CENTRAL R&D LABS INC,TOYOTA MOTOR CORP has got intellectual property rights for 'MANAGEMENT METHOD OF LITHIUM ION SECONDARY BATTERY AND BATTERY MANAGEMENT SYSTEM.' Other related details are as follows:
Application Number: JP,2023-097729
Category (FI): G01R31/382,H01M10/48@Z,G01R31/378,G01R31/385,G01R31/367
Stage: PROBLEM TO BE SOLVED: To precisely estimate SOC of a lithium ion secondary battery with an anode containing a graphite based anode active material.SOLUTION: A management method of a lithium ion secondary battery manages a battery 10 of a lithium ion secondary battery with an anode 2 including a graphite based anode active material, and an anode electrode collector 21. A battery model is a multiparticle model where at least one of a structure parameter and a material property parameter respectively representing the easiness of electric charge transfer reaction of lithium ion represents an anode active material based on multiple kinds of particles different from each other. The management method includes the steps of: calculating an amount of lithium contained in the particles based on reaction current density for each particle as an object; and calculating an average value of the amount of lithium for each of the multiple kinds of particles as SOC of the battery 10.SELECTED DRAWING: Figure 7 (Grant)
Filing Date: June 14, 2023
Publication Date: Dec. 26, 2024
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
