PV Systems - Components and Concepts Batteries I - Introduction Week 7.5.1 Arno Smets, Nishant Narayan
Ragone plot
Types of batteries Lead Acid batteries, Zinc carbon batteries, Alkaline batteries Lithium ion batteries, … Primary Secondary
Secondary batteries Lead Acid Batteries Lead Acid batteries Lithium ion batteries …
Nickel Metal Hydride and Nickel Cadmium Multi-plate positive electrode Positive and negative electrodes of adjacent cells are linked to give greater voltage Multi-plate negative electrode Battery casing Multi-plate Cell divider negative electrode
Lithium ion and Lithium ion polymer
Redox flow
Battery Ragone plot 1000 Volumetric Energy Density (Wh/l) Smaller 800 Thin film Li/Li-ion 600 Li 400 Ni-MH Li-Polymer 200 Lighter Pb-acid 0 0 200 400 100 300 Gravimetric Energy Density (Wh/kg)
Lead Acid battery External circuit Through partition Tapered terminal post connectors Cover Post strap Plate lugs Vent plugs Postive plate Envelope separators Container Negative plate H 2 SO 4 Sediment space Element rests Positive Negative plate plate
Solar irradiance and demand profile Solar irradiance (W/m 2 ) A 1 = A 2 Load demand(W) A 1 A 2 Time (h)
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