How to reduce the safety risk associated with large battery systems?

To reduce the safety risk associated with large battery systems, it is imperative to consider and test the safety at all levels, from the cell level through module and battery level and all the way to the system level, to ensure that all the safety controls of the system work as expected.

What happens if a battery energy storage system is damaged?

Battery Energy Storage System accidents often incur severe losses in the form of human health and safety, damage to the property and energy production losses.

Are batteries a physical hazard?

Physical hazards for batteries include hot parts and moving parts, often discussed in the context of direct harm to human beings exposed to the hazard. Hot surfaces on the battery components can cause burns if it comes into contact with human skin (Agency, 2020).

What are the consequences of abusing a battery?

Abusing a battery can result in an inoperable Energy Storage System (ESS). It can also lead to overheating, fire, and explosion. Mechanical abuse occurs when the battery is physically compromised, such as when it is crushed, dropped, penetrated, or otherwise distorted to failure by mechanical force.

Are lithium ion batteries dangerous?

As the number of installed systems is increasing, the industry has also been observing more field failures that resulted in fires and explosions. Lithium-ion batteries contain flammable electrolytes, which can create unique hazards when the battery cell becomes compromised and enters thermal runaway.

Why are battery energy storage systems important?

Battery energy storage systems (BESSs) use batteries, for example lithium-ion batteries, to store electricity at times when supply is higher than demand. They can then later release electricity when it is needed. BESSs are therefore important for “the replacement of fossil fuels with renewable energy”.