Wednesday, December 7, 2022
News An “Anti-Short Layer” Could Prevent Battery Fires in EVs

An “Anti-Short Layer” Could Prevent Battery Fires in EVs

Electric vehicle fires cause a lot of concerns, but solutions could be implemented relatively easily

  • Researchers in Singapore have tested an “anti-short layer” in over 50 batteries and no short circuit was detected

  • Short circuits are caused by dendrites forming on lithium-ion batteries that inadvertently connect cathodes and anodes

  • This solution would increase the manufacturing costs of battery packs by about 5%

Amid the talks about the safety of electric vehicles brought about by the Chevrolet Bolt recall, researchers in Singapore might have found a viable solution to prevent most battery fires in electric vehicles.

This invention is called an “anti-short layer” because it is a layer applied to the separator inside the cells that prevents dendrites from completing a circuit between the cathodes and the anodes, which causes a short circuit.

Dendrites are metallic microstructures that form in the battery cells due to a manufacturing defect or due to operation in difficult conditions, such as extreme cold. When these dendrites grow, they can bridge contacts between anodes and cathodes, which often results in a fire.

This layer would not stop the dendrites from forming, but it would direct them in a way that is safe for the battery.

The researchers say that this “anti-short layer” is made of a material commonly used in battery production, but could increase costs related to manufacturing by about 5%, which could be too much for this solution to be implemented by automakers.

Other measures intended to reduce the risk of combustion of lithium-ion batteries that have been developed include pyrotechnic fuses that can cut power to the pack in a fraction of a second in the case of an incident, as well as less flammable battery chemistries.

Even if they get talked about a lot, electric vehicle going up in flames due to a faulty battery are very rare, much rarer in fact than gasoline powered vehicle fires.

Trending Now

More power and more range for the 2024 Volvo C40/XC40 Recharge

The 2024 model year will switch to a RWD setup. Expect more power and more range. Will Polestar follow Volvo with the 2?   It...

Video: Hyundai shows the future of N

The motorsport division is trying to improve handling with its future N branded cars. The Hyundai Ioniq 5 N will be the brand's...

Top 20 Vehicles with the Longest Potential Lifespan

New vehicle prices continue to climb out of many consumers' reach. Used vehicle pricing remains high however shopping for something older remains an...

Honda will Make a Hydrogen-Powered SUV Based on the CR-V in 2024

This model will be built at the company’s Performance Manufacturing Center in Ohio. It will be the first hydrogen vehicle that can also...

Lightyear Begins Production of the First Solar-Powered Car

The first production unit of the Lightyear 0 rolled off the assembly line yesterday. About 150 pre-orders have been received according to the...

LEAVE A REPLY

Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.