BATTERY CONTROL METHOD BASED ON AGEING-ADAPTIVE OPERATION WINDOW

摘要

A battery control method based on ageing-adaptive operation window is provided, including: performing a multi-dimensional electrochemical impedance spectrum method to obtain a three-dimensional Nyquist-vs-SoC relation diagram; using an equivalent circuit model to analyze the Nyquist-vs-SoC diagram to obtain at least a major ageing factor; defining an operation window stress index, and based on the stress index defining a plurality of control reference points for the battery operation window; and based on the plurality of control points, performing the control of battery discharging.

主权项

1. A battery control method based on ageing-adaptive operation window, comprising the steps of:
performing a multi-dimensional electrochemical impedance spectrum (MD-EIS) method to obtain a three-dimensional Nyquist-vs-SoC relation diagram; analyzing the three-dimensional Nyquist-vs-SoC relation diagram by using an equivalent circuit model (ECM), to obtain at least one major ageing factor; defining a stress index relation of a battery operation window, and defining, based on the stress index relation, a plurality of control reference points for the battery operation window; and performing a battery discharging control based on the plurality of control points.