Objective Objectives and problems to be solved:Batteries have lifetimes between 3 to 15 years depending on application and battery quality. For end users this seems too short, but they are significantly too long to prove the quality of batteries by a non-accelerated lifetime test. Today, acceleration in tests is done by increasing temperature or cycles per day. But these procedures all have the problem, that accelerated tests do not reproduce the real operating conditions of the batteries. The project team of battery industry and research partners aims at a new procedure. Simulation models will be used to determine the lifetime of batteries in specific applications and operating conditions. But simulation models cannot predict the behaviour of the materials just from the first principles. Therefore electro-chemical tests and impedance spectroscopy are performed to calibrate the simulation models for each battery. The different tests focus each on one specific ageing effect on lead batteries. These tests last less than 12 weeks.Description of work:Information available on accelerated and non-accelerated ageing tests will be collected and analysed. Batteries from field installations will be analysed to identify the ageing effects of importance. Because of their very complex ageing effects batteries in renewable energy systems will be in the centre of the investigations. Data on typical operating conditions in different applications will be collected for the use in the lifetime simulations. Electro-chemical test procedures will focus each on one specific ageing effect. These specific results for each battery will calibrate the simulation models. Using the results of the specific ageing effects the model will allow the extrapolation to the long-term performance under various operating conditions by superimposition and weighting the different ageing effects. Therefore a detailed battery model which allows the calculation of the physical parameters at every point at any time in the battery is necessary. Standard physico-chemical tests can be done only as post mortem analysis. They can be performed once from a specimen, but do not allow for continuous monitoring of the state-of-health of the battery. Impedance spectroscopy will help to evaluate the progress of ageing continuously and in site during the test. The accelerated ageing test needs validation with non-accelerated tests. Therefore a couple of non-accelerated tests on different battery technologies and operating conditions will be performed.Expected results and exploitation plans:The new procedure will be made available for everybody interested in accelerated tests (manufacturers and users) and may be introduced as standard test procedures accepted by both sides, the manufacturer and the user. The results on the procedures will be disseminated through reports in scientific journals, conferences and on a workshop organised by the consortium. Fields of science natural scienceschemical scienceselectrochemistryelectric batteriesengineering and technologyenvironmental engineeringenergy and fuelsrenewable energynatural sciencesphysical sciencesopticsspectroscopy Programme(s) FP5-EESD - Programme for research, technological development and demonstration on "Energy, environment and sustainable development, 1998-2002" Topic(s) 1.1.4.-6. - Key action Economic and Efficient Energy for a Competitive Europe Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V.* EU contribution No data Address Heidenhofstrasse 2 79110 FREIBURG (IN BREISGAU) Germany See on map Total cost No data Participants (6) Sort alphabetically Sort by EU Contribution Expand all Collapse all AACHEN UNIVERSITY OF TECHNOLOGY Germany EU contribution No data Address Jaegerstrasse 17-19 52066 AACHEN See on map Total cost No data ACCUMULATORENFABRIK SONNENSCHEIN GMBH Germany EU contribution No data Address Im Thiergarten 63654 BUEDINGEN See on map Total cost No data CENTER FOR SOLAR ENERGY AND HYDROGEN RESEARCH BADEN-W_RTEMBERG Germany EU contribution No data Address Helmholtzstrasse 8 89081 ULM See on map Total cost No data COMMISSARIAT A L'ENERGIE ATOMIQUE France EU contribution No data Address CEA Cadarache, Bat. 351 13108 ST.PAUL LES DURANCE See on map Total cost No data COMPAGNIE EUROPEENNE DES ACCUMULATEURS S.A. France EU contribution No data Address 5-7,Allee des Pierres Mayettes 5-7 92636 GENNEVILLIERS See on map Total cost No data SEA TUDOR - SOCIEDAD ESPANOLA DEL ACUMULADOR S.A. Spain EU contribution No data Address 2,Carretera Nacional II, KM 42 19200 AZUQUECA DE HENARES See on map Total cost No data
