Study Reveals Key Differences Between Tesla and BYD EV Battery Designs

New research highlights contrasting approaches in energy density, cost efficiency, and thermal management between Tesla's 4680 cell and BYD's Blade battery.

• Tesla's 4680 battery focuses on high energy density and performance, making it ideal for long-range electric vehicles, while BYD's Blade battery emphasizes affordability, safety, and thermal efficiency.
• BYD's Blade battery uses lithium iron phosphate (LFP) chemistry, which is cost-effective and thermally stable, whereas Tesla's 4680 cell employs a nickel-manganese-cobalt (NMC811) blend for higher energy density.
• The study found that BYD's battery generates half the heat per volume compared to Tesla's at the same charging rate, simplifying cooling requirements and improving efficiency.
• Material cost analysis revealed BYD's battery is approximately €10 cheaper per kilowatt-hour to produce due to its use of less expensive materials, giving it a competitive edge in affordability.
• Both batteries share similar proportions of non-active components and rely on laser welding, but their design philosophies reflect distinct priorities for performance versus cost-effectiveness.

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