Farasis presents battery system with semi-solid pouch cells
At the recent China International Supply Chain Expo (CISCE), Farasis Energy revealed its Super Pouch Solution (SPS) for electric cars. The SPS cells offer an energy density of over 220 Wh/kg. The new cells should enable ranges of more than 1,000 kilometres – keeping in mind that the Chinese manufacturer does not specify which test cycle is used. The system is designed for 80 to 150 kWh capacities depending on the “thickness” of the horizontal pouch cells between 85 and 145 millimetres. Farasis explains that this is because the system itself is “non-modular”.
The Chinese manufacturer expects this approach to increase the energy density by over 30 per cent compared to “conventional modular systems with the same volume”. SPS is said to be compatible with “various EV models.” Judging by the company’s images and reading between the lines, the battery manufacturer appears to be using the term “electric vehicle” as a synonym exclusively for electric cars. Farasis does not go into any more detail at this point.
Farasis says its use of large semi-solid pouch cells in combination with “an efficient liquid cold plate” has enabled the battery maker to achieve a volume utilization of 75 per cent and reduce the number of components by half. This also makes the system around 20 to 30 kilograms lighter than conventional battery systems and reduces material costs by a third.
Farasis says the new cells use lightweight aluminium-plastic foils for encapsulation and an advanced stacking process. The cells’ energy density exceeds that of conventional prismatic and cylindrical cells of the same size by ten per cent. Farasis promises charging and discharging rates of “2C to 6C and more”, allowing electric cars to achieve fast charging to enable up to 400km of range in 10 minutes, maintaining high efficiency during energy release. The Chinese manufacturer has not yet revealed when its SPS cells will be available.
At the trade fair, Farasis also presented its eVTOL battery technology, its battery system for electric motorcycles, and portable energy stations but did not reveal further information about either the electric motorcycle or eVTOL battery system in its press announcement for the automotive industry.
In spring, Farasis Energy optimized the design of its battery modules to prevent thermal runaway of the module in the event of damage to its latest generation of cells (Generation 4). Industrial production of the optimized modules is set to begin in 2025.
Stefan Bergold, General Manager of Europe at Farasis, recently told electrive that Farasis had developed a solution that limits thermal runaway to a single cell and prevents it from spreading to neighbouring cells and later to the entire battery pack. Farasis had proven this – “in simulations, demonstrations, real battery modules, real battery packs and also in real electric vehicles”, Bergold said at the time.
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