The internal temperature of Li-ion batteries for electric or hybrid vehicles is an important factor influencing their ageing. Generally not measured, it can be reconstructed from an external measurement and a model. This paper presents the simplified modelling of heat transfers in a battery module, leading to a Linear Parameter-Varying (LPV) model. Then, a polytopic observer is proposed to estimate the cell temperature and internal resistance, ensuring a tradeoff between the convergence speed and the noise of the estimated states. Experimental results show the good quality of the estimation and the diagnosis potential offered by internal resistance reconstruction.
An observer looks at the cell temperature in automotive battery packs
Control Engineering Practice ; 21 , 8 ; 1035-1042
2013
8 Seiten, 21 Quellen
Aufsatz (Zeitschrift)
Englisch
Modeling and Validation of Lithium-Ion Automotive Battery Packs
British Library Conference Proceedings | 2013
|Modeling and Validation of Lithium-Ion Automotive Battery Packs
SAE Technical Papers | 2013
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