Battery life prediction system and method for energy storage based on dynamic coupling of three-dimensional thermal model and one-dimensional equivalent circuit

Abstract

The invention relates to a battery life prediction system and method for energy storage based on dynamic coupling of a three-dimensional thermal model and a one-dimensional equivalent circuit, belongs to the technical field of batteries, and solves at least one of the problems that an existing method is insufficient in prediction precision, inconsistent in life at different positions of a battery cannot be accurately predicted and the like. The system adopts a three-dimensional thermal model to calculate the temperature field distribution of the battery system, and is bidirectionally and dynamically coupled with a battery equivalent circuit model to calculate the service life of the battery system, so that the calculation precision is improved; according to the method, the three-dimensional thermal model is established, heat production, heat transfer and heat dissipation of the whole battery system are considered, temperature distribution of each battery can be accurately calculated, temperature field distribution of the whole battery system can be obtained, and thermal design of the battery system is guided.

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