Title :
Enhanced battery model including temperature effects
Author :
Rosca, B. ; Wilkins, S.
Author_Institution :
TNO Sci. & Ind. - Automotive, Helmond, Netherlands
Abstract :
Within electric and hybrid vehicles, batteries are used to provide/buffer the energy required for driving. However, battery performance varies throughout the temperature range specific to automotive applications, and as such, models that describe this behaviour are required. This paper presents a dynamic battery model describing the battery voltage based on current and temperature. A model identification method is presented and validation tests are performed. The results show that when temperature influences are included in the models, a significant increase in performance can be achieved. Modelling errors lower that 5% are achieved for validation tests conducted at -10°C, 0°C and 10°C, whereas the models that do not consider temperature show errors up to 10%.
Keywords :
battery powered vehicles; hybrid electric vehicles; identification; battery voltage; dynamic battery model; electric vehicles; enhanced battery model; hybrid electric vehicles; model identification method; temperature -10 degC; temperature 0 degC; temperature 10 degC; temperature effects; Batteries; Equations; Mathematical model; Resistance; System-on-chip; Temperature measurement; Voltage measurement; battery SoH; battery model; lithium battery;
Conference_Titel :
Electric Vehicle Symposium and Exhibition (EVS27), 2013 World
Conference_Location :
Barcelona
DOI :
10.1109/EVS.2013.6914792