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 Fire Spread in Informal Settlements www.BuildingPhysics.co.za 4

www.BuildingPhysics.co.za 5

www.BuildingPhysics.co.za 6

www.BuildingPhysics.co.za 7

www.BuildingPhysics.co.za 8

Inverse Square Law 9

Energy Density Electrical = 6 MWh Fuel load = 110 GJ www.BuildingPhysics.co.za 10

Energy Density Electrical 6 MWh Fuel load ± 110 GJ 12 m Container of Chocolate ± 1500 GJ www.BuildingPhysics.co.za 11

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

ESKOM Rosheville Lithium Battery Fire Typical Gauteng breeze of 5 m/s

Commercial Buildings

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

Mobile Batteries ?

EVs in Parkades V2B2G 750 kg of smoke & gas Order of magnitude less likely Different but still much the same

110 kWh battery = 2 GJ = 50 litre petrol 831 km 640 km

Heat Release Rate

Hydrogen Fluoride

EV Fires - Causes 60 % battery, 20 % chargers 20 % other reasons Beijing Institute of Technology ( 2017 )

In the end, nothing has to burn Good engineering and adherence to standards reduces the risk

Rimac Automobili - Concept_One

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.