A new vehicle battery that offers 10 times more capacity density and weight savings than a conventional battery has been debuted by FEV and ProLogium.
It uses LLCB technology (large-footprint lithium ceramic battery) featuring an anode made of 100% silicon composite material. Depending on the vehicle segment, the LLCB allows weight savings of up to 300kg or a maximum range of 1,000km. In contrast to current liquid electrolytes, the solid-state electrolyte is non-flammable and guards against thermal runaway. It also prevents potential short circuits caused by leaking electrolyte fluid in the event of a spill.
“For the LLCB solution, we have successfully combined ProLogium’s know-how in the field of cell development with our development, system and testing expertise,” said Dr Thomas Hülshorst, global vice president of electric powertrain at FEV.
Compared with current fast charging intervals of around 30 minutes, the silicon anode enables ultra-fast charging, reducing the charging time by over 80%. This means the battery can be charged from 5% to 60% within five minutes, providing a range of 300km. After a further three minutes, the battery can be charged to 80% and cover an additional 100km. In this way, the LLCB claims to bring charging times closer to the duration of a refueling process.
Another highlight of the new battery is its slim cell shape, which can result in space-saving designs, opening additional options for OEMs. “The modular design of the battery also makes maintenance much easier, saves costs and allows individual cells to be replaced and recycled,” said Hülshorst.