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Blue nova

The home of high-performance ultra-reliable energy storage solutions. Lithium Iron Phosphate (LiFeYPO4) batteries have now become the leading technology in energy storage for the modern world. With transfer efficiencies of more than 96% @C2 charge and discharge rates (or 98% @C10), they deliver 10 times higher turn-around efficiencies than leading lead-acid batteries. This feature implies major savings in the necessary size of the solar system required to charge the batteries.

LiFeYPO4 batteries are capable of delivering up to 90% of their charge for more than 4000 times. This is achieved in ambient temperatures of more than 35°C without any performance degradation. The batteries are perfectly suited for operation in warm African conditions.

LiFeYPO4 batteries have more than 4 times the energy density than lead acid equivalents. This has great advantages for applications where lightweight energy storage is a requirement. Applications such as 4×4 vehicles, yachts and even apartment buildings benefit greatly from these lightweight batteries. No gassing, no ventilation.

Experience the benefits of a new generation of energy storage solutions. At BlueNova we offer batteries for a wide range of applications. From 12V, 24V, 36V, 48V up to 800V. Storage capacity ranges from 1 kWh for small residential applications to 1080 kWh for industrial applications.

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Safety performance of LiFeYPO4 batteries

The use of lithium-ion batteries in many of today’s electronic consumer products has increased significantly due to the advantages of high energy density, high cell voltage, and longer shelf life over that of comparable battery chemistries. The cell chemistry of conventional lithium-ion batteries has been limited by the choice of suitable lithium liberating cathode materials i.e. the three oxide electroactive materials: LiMn2O4, LiCoO2 and LiNiO2 (lithium-manganese, lithium-cobalt, and lithium-nickel respectively). These materials are generally found to offer high electrochemical performance at the expense of poor thermal stability. The three lithium oxide’s thermal instability when over-charged has limited the application of these materials to small and relatively low capacity lithium-ion batteries.

The novel use of a phosphate-based material in the cathode has been found to offer many of the advantages of traditional lithium-ion chemistries without sacrificing the safety necessary in a large format application. In this paper, the results of safety testing comparing phosphate-based cells and the most popular of the three lithium oxide materials (lithium-cobalt), is presented. Test data will show that the safety circuitry used in popular lithium-cobalt 18650 cylindrical cells will not prevent an event or propagation of an event if thermal runaway occurs within one cell in a battery pack.

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