Analysis of the external characteristics of batteries under pulse charging mode

Abstract

With the development of energy Internet and electric vehicles， energy storage batteries have become a research hotspot in the scientific and industrial communities. During the whole lifespan of a battery， it is an urgent request to explore safer， faster， and more effective charging methods. Based on MATLAB/Simulink simulation software， an electrochemical model of the battery considering the non-linear effect is established to study its voltage response and capacity response under different charging current rates， pulse frequencies， and pulse duty cycles. Besides， its parameter variation characteristics under pulse charging mode are investigated. The simulation results show that the pulsed operation mode can increase the available capacity of the battery by 5% or more at a large charging current rate. The results provide a reference for the subsequent research on the pulsed charging operation.

Keywords

• battery energy storage system
• pulse charging
• non-linear effect
• battery model