Researchers puzzled by discovery after ripping apart Tesla battery: ‘We were surprised’
Researchers studying electric vehicle technology made an unexpected discovery while disassembling a car battery from Tesla and another from BYD; An insightful review of current technology and potential implications for next-generation EV batteries.
ZME Science Posted in broke battery operation Cell Reports Physical Science. The team compared the Tesla battery with the BYD battery from companies that are leading automakers on the electric vehicle scene.
Tesla’s 4680 battery appeared to prioritize power and range by maintaining higher energy density in a more compact design, ZME Science details. However, this makes the production of the battery more expensive. Meanwhile, according to the news source, the BYD battery is produced at a lower cost, prioritizing stability, safety, long life and affordability.
Although the differences stood out the most, the team found some similarities, including at least one unexpected aspect.
“We were surprised to see the absence of silicon content in the anodes of both cells, especially Tesla’s cell, as silicon is widely recognized in research as an important material for increasing energy density,” said Jonas Gorsch, lead author of the study. newsletter.
Each battery had its strengths and weaknesses. According to ZME Science, although the Tesla battery is produced at a cost disadvantage, it is more suitable for high-performance and luxury vehicles. However, its design can cause more heat build-up, causing more problems with fast charging and shortening its lifespan.
On the other hand, the BYD lithium iron phosphate battery is reportedly more resistant to thermal runaway, making it safer. Its features also make it more suitable for mass-market and affordable EV models, the researchers noted.
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Breaking down the batteries was one of the first glimpses into the inner workings of cells from two of the most popular EV manufacturers, according to news outlets.
“There is very limited in-depth data and analysis available on state-of-the-art batteries for automotive applications,” Gorsch said in the news release.
their report“This paper provides insights into the design and properties of state-of-the-art LIBs for automotive applications. Comparative analysis of the Tesla 4680 cylindrical cell and the BYD Blade prismatic cell highlighted important mechanical, electrical, and material differences that may impact future cell design iterations,” the researchers wrote.
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