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Booster Battery for High Power Demand

Objectif



Objectives and content
Environmentally compatible passenger vehicles aiming at zero emissions and reduced energy requirements are now being under development. The reduction of the C02-emissions ("Greenhouse effect" ) as well as the use of regenerative energy sources are also important aspects of the actual research.
The presented proposal is aimed at the development of a high power booster battery. This is a key component of the new hybrid vehicles which are now believed to be the way forward. The proposed work fits into the "Electric and Hybrid Vehicles cluster of the European programme EU-TRA on environmentally Friendly Cars". Hybride vehicles are one of the most promising concepts for a more efficient and environmentally compatible car and they are being developed by almost all car manufacturers in the world. These cars require a small energy storing unit (in the range of 3 kWh) capable of delivering high loads and being recharged rapidly by the on-bord-engine. They must be capable also of absorbing the energy from regenerative braking. From all battery systems available today the NiMH-system is considered the most promising one with respect to meeting the high demands. However, the existing product has limitations which have to be overcome by intensive development work. These activities have to focus on:
- Improvement of specific power up to 400W/kg - Increasing energy efficiency to more than 70% even under high load conditions
-Improving of cycle life endurance
-Keeping feedstock and manufacturing costs on an economically reliable level
These technical improvements are to be achieved by new concepts in materials, cell and battery design. Moreover the battery/engine interface including thermal and electronic control has to be developed for the significantly increased requirements. The technical aspects will be addressed by:
- New Hydrogen-storing alloys taylormade for high discharge capability - Advanced electrode technologies for high drain applications
- Cell and battery configuration redesign with regard to the special demand - Employment of an intelligent battery and thermal management system -Reducing costs by use of cheaper, widely available materials and a establishment of a recycling procedure for spent batteries
The consortium comprises VARTA as a battery developer, TREIBACHER AUERMET as a manufacturer of advanced storage materials, CERAM RESEARCH as a materials expert. The presence of BMW and VOLVO as two potential users of the battery system for their hybride vehicles will give the appropriate feedback from the user side. Development work will be done according to the users specific demands. Testing in experimental cars will be performed according to their experience of driver habits. A detailed technical account of the work, together with an economical and ecological assessment covering all environmentally relevant aspects. will be given at the end of the project.

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Coordinateur

Varta Batterie AG
Contribution de l’UE
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Adresse
Gundelhardtstraße 72
65779 Kelkheim
Allemagne

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