Cell-to-pack architecture for fast charging

(Image courtesy of StoreDot)

StoreDot has developed a cell-to-pack architecture for its silicon-based fast-charging batteries, writes Nick Flaherty.

The I-BEAM XFC is a patented cell design that accelerates the integration of extreme fast charging (XFC) into EVs using StoreDot’s proprietary 100in5 electrode technology. The silicon anodes enable charging for 100 miles of range in just five minutes.

With the I-BEAM XFC, cooling is embedded in the cells to provide the thermal management required for fast charging. This prevents localised hotspots and maintains uniform temperatures across the battery pack.   

“By taking a holistic approach, we have developed a concept that improves packing efficiency and battery lifecycle,” said Dr Doron Myersdorf, CEO of StoreDot.

The firm is building a demonstration vehicle with the XFC technology and shipping prismatic B-samples of the cells to car-makers.

StoreDot has also shown an early prototype of its 100in4 cell, enabling charging for 100 miles of range in four minutes.

The 3Ah 100in4 cells were tested using low applied pressure with minimal expansion.

The cells showed 1100 fast-charging cycles with high energy density, and a projected energy density of 340Wh/kg in an EV form factor.

The 100in4 technology will scale up from this 3Ah cell to 140Ah for mass production in 2026. A 100in3 cell for charging a range of 100 miles in three minutes is planned for 2028.