The presented model describes the correlation between costs and component parameters, such as component type and specification for electric motors, inverters and energy storages. This paper takes a focus on already developed electric drivetrains in the product design process. The method used in the model, is based on physical relationships considering the state of the art and the application context. The presented cost model with the integrated method allows determining cost changes which are based on design changes. As there are self-contained models for the components of the electric drivetrain, design changes can be translated in material weight changes and therefore in material cost changes. As material prices are input variables, it is possible to update them based on the material market situation. Another benefit of those self-contained components models is the improvement in technology status, which concerns the correlation between component design parameter and material used, could be updated for every component individually without effecting the other components. The presented cost model perfectly supports the design process of electrified vehicles in the early phase of design where knowledge about the major correlations between product requirements, properties and costs of an electric propulsion system is needed.
Electric vehicles - A cost model of electric propulsion systems
2012
6 Seiten, 3 Bilder, 4 Tabellen, 19 Quellen
Conference paper
English
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