EV battery cells (file photo)

StoreDot, the Israeli pioneer of extreme fast charging battery technology for electric vehicles, has revealed “ground-breaking”, silicon-dominant technology applied in extreme fast charging (XFC) cylindrical cells.

In a claimed world first, the company demonstrated the prototype 4680 shape which is fully charged in just 10 minutes.

These extreme fast charging cylindrical cells use the 4680 format increasingly favoured by global car makers, and have been in development for over three years.

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Pioneering work for these breakthrough technologies was begun at Warwick University in the UK in collaboration with BP.

The work is covered by five patents in the area of cell design and uses StoreDot’s continuous tab technology. Such cell design increases throughput and addresses safety and performance issues typically associated with the hard case structure of cylindrical cells.

Testing has shown promising low levels of internal resistance. Cylindrical cell samples are now ramping up on production lines at EVE Energy, StoreDot’s manufacturing contractor in China.

This breakthrough means automotive manufacturers will be able to use StoreDot’s XFC batteries, which deliver a 50% reduction in charging time at the same cost, in both pouch and cylindrical cell forms. Both formats are undergoing scale up process at EVE Energy and will be ready for mass production in 2024.

In addition, with such format versatility, the entire industry will be able to use StoreDot’s newly introduced patent pending Boost Charging Technology (BOOCT) application.

Doron Myersdorf, StoreDot CEO, said: “It’s highly significant that we can offer electric vehicle manufacturers the choice of cell formats, utilizing our XFC technology that will overcome the current barriers to EV ownership: range and charging anxiety.

“We are in advanced discussions with a number of global automotive manufacturers and we plan to supply them with various XFC cells.”

4680 cylindrical cell format requires unique chemistry adaptation to offset greater internal pressures, gas release and avoidance of potential leakage.

Future generation extreme energy-density (XED), based on solid state technology, are on target to enter mass production in 2028.