公开(公告)号：US20230333172A1

公开(公告)日：2023-10-19

申请号：US18300116

申请日：2023-04-13

Applicant: Beijing Institute of Technology

Inventor： Huixing MENG ,  Mengyao GENG ,  Cheng WANG ,  Jinduo XING

IPC: G01R31/387 ,  G01R31/367

CPC classification number: G01R31/387 ,  G01R31/367

Abstract: One or more embodiments of the present specification provide a method and device for capacity degradation prediction of a lithium-ion battery. The method comprises the following steps: acquiring an original battery discharge capacity; decomposing the original battery discharge capacity through a predetermined mode decomposition method to obtain battery discharge capacities composed of a plurality of different frequency signals; inputting the respective frequency signals into a pre-constructed capacity prediction model to obtain capacity prediction results corresponding to the respective frequency signals; selecting capacity prediction result that satisfies a predetermined relevance condition corresponding to the respective frequency signals; and reconstructing the finally predicted battery discharge capacity according to the capacity prediction result that satisfies the predetermined relevance condition.