Estimation of Electric Vehicle Battery Ohmic Resistance Using Dual Extend Kalman Filter

Abstract:

Using the traditional measurement analysis methods to estimate electric vehicle lithium ion battery ohmic resistance, it is difficult to realize on line. We in this paper use dual extend kalman filter (DEKF) based on thevenin model to solve this problem. DEKF is a kind of circulative iteration algorithm of two kalman filters, applied in the estimation which the systems state and parameter both are unknown. Using DEKF on the estimation of battery ohmic resistance only need the battery current and terminal voltage, therefore, it can be realized on line easily. This paper verified the effectiveness of DEKF through simulation and analysis of the test data.

• Periodical: Applied Mechanics and Materials (Volume 391)
• Pages: 246-249
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.391.246
• Online since: September 2013
• Authors: Qiao Yan Chen, Ke Xin Wei
• Keywords: Battery Model, Dual Extend Kalman Filter (DEKF), Electric Vehicle (EV), Ohmic Resistance

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