Method and system for predicting working conditions of lithium batteries

A system for predicting working conditions of lithium batteries, comprising:

• a first calculation module, configured to perform a Fourier transform on a physicochemical state quantity distribution function of a solid-phase lithium battery to calculate a physicochemical state quantity distribution series function in a frequency domain and obtain a solid-phase physicochemical state quantity in the frequency domain according to the physicochemical state quantity distribution series function, wherein the physicochemical state quantity distribution function is an equation expression of physical and chemical quantities of the solid-phase lithium battery that change continuously in space in a time domain, and wherein the physical and chemical quantities comprise at least one state quantity of physical parameters and chemical parameters of the solid-phase lithium battery;
• a second calculation module, configured to perform a Laplace transform on a partial differential governing equation set of the solid-phase physicochemical state quantity to obtain a solid-phase ordinary differential equation set in a complex frequency domain and obtain an analytical solution in the time domain through an inverse Laplace transform;
• and
• a prediction module, configured to calculate a predicted value of the working conditions of the solid-phase lithium battery at any location and at any time in the future according to the analytical solution.