Battery life prediction method and device based on integral operation and storage medium

Abstract

The invention discloses a battery life prediction method and device based on integral operation and a storage medium, and belongs to the technical field of power batteries, and the method comprises the steps: obtaining a calendar capacity attenuation model and a cycle capacity attenuation model, and constructing a first temperature-dependent life function and a charge state attenuation function according to the calendar capacity attenuation model; integral and first cumulative time of the first temperature-dependent life function and the charge state attenuation function in the calendar time are calculated respectively; constructing a second temperature-dependent life function according to the cycle capacity attenuation model, and calculating the integral of the second temperature-dependent life function in the cycle time, second cumulative time and energy throughput; and calculating the mean value of each integral, and inputting the mean value of all the integral, the first cumulative time and the energy throughput into a battery life model to obtain the remaining life of the battery. According to the method, real-time calculation of the battery life SOH under the time-varying working condition is achieved, and engineering application of the battery life model can be achieved on the controller in real time.

Images