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Using (LiFepo4) Lithium Iron Phosphate Batteries in Aviation

Using (LiFepo4) Lithium Iron Phosphate Batteries in Aviation . Engine Starting Batteries. Destructive Testing. Why is LiFePo4 safe ?. Impedance Values .. 19 mohms. 10.5mohms. Low Impedance .. 10.8 mohms. SLA discharge curve low C-rate. Lithium discharge curves, hi C rate.

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Using (LiFepo4) Lithium Iron Phosphate Batteries in Aviation

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  1. Using (LiFepo4) Lithium Iron Phosphate Batteries in Aviation Engine Starting Batteries

  2. Destructive Testing

  3. Why is LiFePo4 safe ?

  4. Impedance Values .. 19 mohms

  5. 10.5mohms

  6. Low Impedance .. 10.8 mohms

  7. SLA discharge curve low C-rate

  8. Lithium discharge curves, hi C rate

  9. Energy Densities

  10. Watthours / kg – Watthrs / Liter

  11. Rogone plot - energy storage

  12. Energy Release / chemistry type Exothermic volatilty

  13. Lithium cells - LiFePO4

  14. Lithium can safety valve

  15. See-thru clear case design

  16. BMS

  17. Balancing circuit

  18. Balancer circuit

  19. Charge display

  20. Low V alarm , LVC circuit

  21. ADVANTAGES • Much less weight • Smaller size • Flatter discharge curve • Very low self discharge rate • Very long cycle life • Deep cycle ability • No maintenance needed • Cheaper than lead acid in the long run • Environmentally friendly

  22. Current users; Turbine

  23. PT6-20 in Lancair IV

  24. PT6 start - peak A draw, V drop

  25. PT6 300A generator

  26. Turbine Start Data, Lithium 18lbs

  27. Charging Data > start

  28. Piston; IO550 , Lithium 4 lbs

  29. REFERENCES • Dynalab Wikipedia • A123 MIT • Battery university Goodenough UT • ElectropediaAleees • Phostech Ti Sandia Labs

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