How Safe are Batteries in Electric Vehicles

Safety is the most critical characteristic of a lithium battery.

Behzad Benam
5 min readJan 11, 2021
Photo by Pixabay from Pexels

The transition from internal combustion engines to electric vehicles will solve part of our environmental pollution problem. This new technology transfer to battery-powered electric cars should not pose any additional risk to passengers and other road users' safety. The non-flammability and safety of lithium-ion batteries, which are widely used today as energy and power storage, are now being considered by automotive engineers.

The primary safety issue of lithium batteries in electric vehicles is a thermal runaway caused either by the thermal instability of active materials at high temperatures or by an internal short circuit. Moli Energy has recalled the mass production of lithium/MoS2 batteries due to a serious safety issue. The problem was an electrical shortcut that resulted in thermal runaway and a flame and caused a human injury. Many other battery manufacturers faced similar safety issues early on in lithium battery production.

Lithium is an attractive material due to its high energy density characteristic. However, it is prone to thermal runaway effect.

Thermal runaway

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Behzad Benam

Founder & CEO at SafeLine, providing engineering services in the automotive industry www.safeline-solutions.de