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Two actions will be developed in this set of themes: |
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2. Modeling of electrochemical devices adapted to the Electric Engineering. The critical point of the systems with embedded energy remains the storage system. In the major part of the current applications, storage is carried out in an electrochemical way; nevertheless, the operation and the modeling of these devices are badly known in the Electric Research community.
Studies, primarily directed towards the determination of the accumulators state of load (gauges), were undertaken at the time of the various development of the electric vehicles. Nevertheless, very few of them related to a more general operation (for example, the dynamic behavior), because of the complexity of the phenomena involved and the "double scientific competence" necessary to their understanding. In parallel, the multiplication of the "applications to portable energy", or even the increasingly significant electric outputs, necessary on board of the traditional vehicles, made this kind of approach necessary. Starting from this statement and profiting from a favorable scientific regional environment, the LEC and the LRCS (Laboratory of Reactivity and Chemistry of the Solids: UPRES 6007 of AMIENS) decided to link their efforts, to bring a certain number of answers to this delicate problem. The adopted approach consists in using a standard diagram "lumped constants", modelling well identified electrochemical phenomena. This approach allows, at the same time, to find an agreement area between "electricians" and "chemists" and will make it possible to use the traditional identification approaches used in Electric Engineering. This action is outstanding, within the framework of a regional research Program (Pôle DIVA). A
significant financial effort, so much on behalf of the Region than of
the Laboratories involved, made it possible to develop a significant,
fundamental experimental approach for this kind of subject. |
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