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Energy Storage Safety Lithium Battery Standards & Guidelines
Mike Barker
In the end,
everything burns
- 1. When things go wrong
- 2. How to prevent things going wrong
( based on good engineering and standards )
Energy Storage Safety Lithium Battery Standards & Guidelines - - PowerPoint PPT Presentation
Energy Storage Safety Lithium Battery Standards & Guidelines - - PowerPoint PPT Presentation
Energy Storage Safety Lithium Battery Standards & Guidelines Mike Barker In the end, everything burns 1. When things go wrong 2. How to prevent things going wrong ( based on good engineering and standards ) Design Fires Understanding
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Design Fires
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www.BuildingPhysics.co.za 4
Understanding Fire Spread in Informal Settlements
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www.BuildingPhysics.co.za 5
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www.BuildingPhysics.co.za 6
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www.BuildingPhysics.co.za 7
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www.BuildingPhysics.co.za 8
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9
Inverse Square Law
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www.BuildingPhysics.co.za 10
Energy Density
Electrical = 6 MWh Fuel load = 110 GJ
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www.BuildingPhysics.co.za 11
Energy Density
Electrical 6 MWh Fuel load ± 110 GJ
12 m Container of Chocolate ± 1500 GJ
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Tesla PowerPack 35 minutes to smoke 47 minutes to first flames 1 hour, 20 minutes - thermal runaways audible
No violent cell projectiles, explosions, or bursts observed
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ESKOM Rosheville Lithium Battery Fire
Typical Gauteng breeze of 5 m/s
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Commercial Buildings
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Energy Storage Systems Safety Roadmap
IEEE Energy Storage and Stationary Battery Committee (ESSB) ASHRAE Guideline 21-12 Ventilation & Thermal Management of Batteries for Stationary Applications NFPA 855 Standard for the Installation of Stationary Energy Storage Systems
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Mobile Batteries ?
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EVs in Parkades V2B2G 750 kg of smoke & gas Order of magnitude less likely Different but still much the same
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110 kWh battery = 2 GJ = 50 litre petrol 831 km 640 km
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Heat Release Rate
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Hydrogen Fluoride
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EV Fires - Causes 60 % battery, 20 % chargers 20 % other reasons
Beijing Institute of Technology ( 2017 )
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In the end,
nothing has to burn
Good engineering and adherence to standards reduces the risk
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Rimac Automobili - Concept_One
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Tesla claims that gasoline powered cars are about 11 times more likely to catch fire than a Tesla. It says the best comparison is fires per 1 billion miles driven. It says the 300,000 Teslas on the road have been driven a total of 7.5 billion miles, and about 40 fires have been reported. That works out to five fires for every billion miles travelled, compared to a rate of 55 fires per billion miles travelled in gasoline cars.
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