Saturday, October 16, 2021
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

NHTSA Wants Tesla to Explain Why Vehicles Were Not Recalled

The recall would have involved Tesla’s Full Self Driving technology. A recent over-the-update for Autopilot was not accompanied by a formal recall. If...

LG Electronics Will Pay GM Up to $1.9 billion to Cover Costs of Chevrolet Bolt Recalls

LG is the supplier of the defective batteries The recall will cost an estimated $2 billion for General Motors Battery replacements should begin...

Lamborghini Will Design Golf Carts to be Built in India

Lamborghini and Kinetic Green, an Indian EV maker, will work together to produce exclusive golf carts These golf carts will be sold around...

The New Acura Integra Will be Available with a 6-Speed Manual Transmission

We already know the Integra will be a 5-door hatchback. It is expected to arrive in early 2022. Acura’s taken a huge risk in...

GM Ultra Cruise to enable hands free driving in 95% of driving situations

Ultra Cruise will be useable on every paved road in the US and Canada The less capable Super Cruise will be offered on...

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.