To improve the performance of power batteries for all climate application, a novel online model-based resistance algorithm (OMRA) has been developed to obtain the impedance of batteries at different temperatures and current amplitudes. The Butler-Volmer (BV) equation has been proposed to describe the electrochemical reaction process of the battery, and then a novel BV circuit model has been employed for accurately calculating the resistance of the battery at different currents and temperatures. The theoretical results show that contrast to the traditional method, using OMRA can accurately calculate the battery resistance and maintain the maximum calculation error at less than 2 mΩ. This proposed method which requires low computational capability and storage space has the potential to calculate the impedance online and accurately.
An Online Impedance Algorithm for All-Climate Batteries Used on Electric Vehicle
Lect. Notes Electrical Eng.
2021-12-14
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
An Online Impedance Algorithm for All-Climate Batteries Used on Electric Vehicle
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