Lithium iron phosphate (LiFePO4) is a very attractive material because of its features such as high thermal stability and environmentally-friendliness. The large size prototype cells with capacity of 50 Ah were fabricated using LiFePCVgraphite chemistry to evaluate durability performance. From the results of longterm tests over 2 years, it has turned out that the LiFePO4/graphite chemistry meets the requirements of life performance of BEV/PHEV applications. 20 Ah prismatic Al-housing cells with LiFePO4/graphite chemistry have been developed based on these experiences. The developed cells are able to supply the stable output-power more than 1100 W / kg over wide range of 10 to 90% SOC. In addition, the cells exhibit the higher acceptability to be charged over 90% SOC within 30 minutes at 25 °C. Furthermore, it was found that the cells showed the superior safety of EUCAR hazard level 3 on the crush and overcharge tests. From these results, the 20 Ah cells are promising for BEV/PHEV applications.
Development of the high performance LiFePO4 cell for BEV/PHEV application
EVS, Electric Vehicle Symposium, 26 ; 113-118
2012
6 Seiten, 12 Bilder, 2 Tabellen, 3 Quellen
Conference paper
English
Graphit , LiFePO4 , Dauertest , Lithium-Eisenphosphat-Akkumulator , Lithium-Eisenphosphat , Lithium-Ionen-Akkumulator , Dauerversuch , Elektrofahrzeug , Umweltverträglichkeit , Elektrifizierung , Treibhausgas , Gasemission , Massenfertigung , industrielle Anwendung , Wärmebeständigkeit , Ausgangsleistung , Arbeitsstoff , Kostensenkung , Elektroindustrie , Umweltschutz
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