Excellent performance and high range: Combined energy storage system for a plug-in hybrid vehicle

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Excellent performance and high range: Combined energy storage system for a plug-in hybrid vehicle

Bockstette, Jens / Jäger, Martin / Pischinger, Stefan / Seibert, David / Ogrzewalla, Jürgen / Habermann, Knut

An ideal energy storage system has a high energy capacity regardless of the output required. In the energy storage systems currently available on the market, the user can now choose between high-energy and high-performance cells. So-called high-energy cells offer high energy capacity, but their output power is limited. High-performance cells on the other hand are limited in terms of energy capacity. For applications that have high demands in terms of performance as well as energy content of the energy storage system, FEV GmbH has developed a battery with a simple bidirectional current controller that makes it possible combine both cell types. Gearing such a system towards certain applications poses a challenge due to the degree of freedom we have gained as a result. Our combined battery was used and analyzed in a plug-in-hybrid-vehicle. As a major result, we were able to achieve a significant increase in output for the particular application in our plug-in-test-vehicle thanks to the optimized battery concept, while at the same time reducing the weight in comparison to a conventional battery. Additionally, we were able to predict the cycle life compared to conventional batteries with relatively high accuracy thanks to the constant discharge rate of the energy pack. The system was built and its feasibility was verified. The current controller was measured in terms of its thermal and electrical properties and has an efficiency of > 98 %. Moreover, we were able to show the actual operating behavior of the battery for different standard driving cycles with the help of a high-voltage hardware-in-the-loop test stand connection by FEV GmbH.

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Document information

Title :

Excellent performance and high range: Combined energy storage system for a plug-in hybrid vehicle

Contributors:

Bockstette, Jens (author) / Jäger, Martin (author) / Pischinger, Stefan (author) / Seibert, David (author) / Ogrzewalla, Jürgen (author) / Habermann, Knut (author)

Published in:

Internationales Stuttgarter Symposium Automobil- und Motorentechnik, 12, Stuttgart International Symposium Automotive and Engine Technology, 12 ; 113-138

Publication date :

2012

Size :

26 Seiten, 22 Bilder, 5 Tabellen, 8 Quellen

Type of media :

Conference paper

Type of material :

Storage medium

Language :

English