Abstract
The E-latch is a new automotive mechatronic device that substitutes the door closure mechanical system with electro-actuated parts plus an embedded electronic control unit (ECU) connected to the main vehicle network. Due to severe automotive safety-critical requirements for door closure, an energy back-up system is required. A solution based on supercaps and boost converter is proposed in this work to ensure E-latch operation even in case of main battery failure. An in-depth thermal, electrical and durability characterization of the supercaps proves the reliability of the energy back-up unit for automotive applications. A Components Off the Shelf (COTS) approach has been followed for the E-latch prototype and test phases. A migration towards an Application Specific Integrated Circuit (ASIC) design approach is envisaged for future large volume production.
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Acknowledgments
This work has been supported by Tuscany Region under the project “AMDS: Advanced Mechatronic Door System”.
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Saponara, S., Saletti, R., Fanucci, L., Roncella, R., Marlia, M., Taviani, C. (2014). SuperCap-Based Energy Back-up System for Automotive Electronic Control Units. In: De Gloria, A. (eds) Applications in Electronics Pervading Industry, Environment and Society. Lecture Notes in Electrical Engineering, vol 289. Springer, Cham. https://doi.org/10.1007/978-3-319-04370-8_1
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DOI: https://doi.org/10.1007/978-3-319-04370-8_1
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