基于多元参数融合曲面的电池充电特性分析

CHARGE CHARACTERISTICS ANALYSIS OF BATTERY BASED ON MULTI DATA FUSION SURFACES

针对目前电池参数特性研究的局限性,提出一种基于多元参数融合曲面的充电特性分析方法。采用基于GNL的改进电池模型,通过参数辨识实验得到电池参数系数,结合电池的充放电特性,将电池端电压、荷电状态SOC、电流及充电时间等多元参数进行融合设计,建立电池参数的三维曲面。该曲面不仅能直观形象地反应电池各参数间的非线性函数关系,还可通过平行截取曲面对电池恒压、恒流等充电方式的充电特性进行分析,其分析结果与EMTP中的仿真结果基本一致。

An analysis method of battery charging characteristics based on multi data fusion surface was proposed to solve the limitation for present characteristics research of battery. The improved battery model based on GNL was adopted, and its coefficients of battery parameters were reached through the parameter identification experiment. Combining the charging and discharging characteristics of batteries, the three-dimensional curved surface of battery parameters was set up by fusing terminal voltage, state of charge, current and charging time of battery, which could show the nonlinear relationships between parameters visually, and the characteristics of constant-voltage charge and constant-current charge could be discussed by intercepting curved surface parallel as well. The analyzing results is almost same as the simulated results in EMTP.