A new patent filed by Tesla Inc. (NASDAQ: TSLA) could represent a major breakthrough in improving battery performance and efficiency, especially at high temperatures.
Improved efficiency of battery storage devices
In a patent application with the USPTO published Thursday, the company describes a new “dicarbonate” solvent (Dimethyl 2,5-dioxahexanedioate or DMOHC) and a new lithium bis(fluorosulfonyl)imide (LiFSI) salt that can make a lithium-ion battery perform better under high voltage and high temperatures.
The patent details his findings, which suggest that the new solvents allow Li-ion batteries to maintain their stability up to 85 degrees Celsius (185°F), retaining nearly 99% capacity even after 3,500 hours of use.
The patent also describes improved safety by minimizing gas buildup, which can pose a fire hazard if the battery containers swell and rupture, something that can happen with Li-ion batteries.
Improved safety, the ability to operate at higher temperatures and sustained capacity even after long hours without degradation could help the company expand its Robotaxi, which is expected to expand to 8 to 10 new markets in the US. It’s worth noting that Tesla’s current Robotaxi network runs from 6 a.m. to 2 a.m., according to the company’s website.
The new technology, combined with improvements in Full Self-Driving, could keep the service running continuously, even in areas with warmer weather that can cause accelerated battery degradation.
Tesla’s Samsung battery deal
The news comes as the EV giant recently signed a $2 billion deal with South Korea Samsung SDIwhereby the company Samsung SDI will pay the amount to supply batteries for the energy storage system (ESS) to Tesla over the next three years.
Tesla had previously signed a $4.3 billion deal with the South Korean battery maker LG energy storage solutions to supply LFP batteries for the automaker’s energy storage systems.
The EV company shared during its third-quarter earnings call last month that it had registered a 44% increase in its energy storage business revenue in the quarter, generating $3.4 billion in revenue, more than 12% of the automaker’s total revenue in the quarter.
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