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AUTOMOTIVE BATTERY BOX COVER
Automotive Battery Box Cover
Composite materials are becoming increasingly valued in the transport industry due to their very high weight-specific properties. In the context of electromobility, weight-specific battery capacity has an increasing importance as an evaluation criterion for BEV. To achieve high values of >180Wh/kg, innovative lightweight solutions of the entire battery system are necessary. One of them is locally reinforced Sheet Molding Compound (SMC) as a resource and cost-efficient process for the manufacturing of battery housings. The process combines the high mechanical performance of unidirectional carbon fiber (CF) prepreg material in areas where needed and the design freedom of SMC (CF or GF) as a compression molding material
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Innovation Description
The part is manufactured with locally reinforced Sheet Molding Compound (SMC) as a resource and cost-efficient process. The component of a traction battery system enclosure needs to fulfill several requirements regarding the application scenario in the transportation industry. Besides fire resistance and crashworthiness, the assembly of the cover and as well as commercially acceptable processes in terms of speed and costs need to be guaranteed. The locally reinforced SMC process combines the high mechanical performance of unidirectional prepreg material in areas where needed and the design freedom of SMC as a compression molding material. It is possible to integrate load introduction elements as attachment points and to use flame retardant SMC materials to withstand the high temperatures while exposed to fire. By using the local UD prepreg reinforcement, a load carrying skeleton can be achieved to ensure that the forces occurring during the use phase can be carried by the component. Even crash scenarios must be considered and can be neutralized by a smart design and the right material combination
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