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Impact des impulsions périodiques de courant sur la performance et la durée de vie des accumulateurs lithium-ion et conséquences de leur mise en oeuvre dans une application transport

Abstract : This work aims to identify the possible impact of periodic current pulses on both performanceand lifetime of graphite/LiFePO4 secondary batteries. Contrary to the well-known results onlead-acid batteries and to results announced in previously published works, periodic pulses donot bring any benefit to the performance and the lifetime of Li-ion batteries. Moreover,certain pulse types have been identified to be detrimental to Li-ion batteries. Using the hybridelectric vehicle application as a reference, we evaluated both the technical and economicalaspects of implementing combined energy storage systems composed with Li-ion batteriesand supercapacitors/capacitors. We found that the control strategies acting on high frequencyharmonics of the current signal to adding/retrieving pulses to the Li-ion battery profile doesnot prolong its life enough to compensate the extra cost of such system implementation.Furthermore, it seems that the best way to optimize the technico-economic balance of theenergy storage system is the sizing. Even if combined energy storage systems using Li-ionbatteries and supercapacitors enable to considerably increase the lifetime/cost ratio, a generalconsideration of the criteria cost, life, mass and volume is more favorable to a solution whereone single Li-ion battery is optimally sized for its application.
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  • HAL Id : tel-01127465, version 1

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François Paul Savoye. Impact des impulsions périodiques de courant sur la performance et la durée de vie des accumulateurs lithium-ion et conséquences de leur mise en oeuvre dans une application transport. Autre. Université Claude Bernard - Lyon I, 2012. Français. ⟨NNT : 2012LYO10027⟩. ⟨tel-01127465⟩

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