NanoFLOWCELL from Liechtenstein, Switzerland, unveiled the QUANT e-Sportslimousine prototype at the Geneva Motor Show, an electric car with flow battery technology. It is reported that the flow battery power system can support the car to travel 400-600 kilometers.
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Flow batteries combine all aspects of electrochemical batteries and fuel cells. The liquid electrolyte is present in both battery compartments and circulates through the battery. The system center has a membrane that separates the two electrolyte solutions, but still allows the charge to circulate, creating power for the powertrain.
One of the advantages of this system is that it uses a larger battery compartment, which means higher energy density.
The powertrain includes 4 motors, 2 super capacitors, and a flow battery.
At 600 V rated voltage and 50 A rated current, the system can continuously output a maximum power of 30 kW. Compared to the lithium-ion battery technology that powers today's electric vehicles, nanoFLOWCELL® is four times more powerful than its weight, which means it can travel five times the weight of conventional components. The specific energy density value is 600 watt-hours/kg.
The company also stated that its flow battery can produce no significant memory effects after 10,000 cycles of charge and discharge.
The first QUANT e-Sportlimousine prototype is equipped with a 200-litre battery compartment with a storage capacity of 120 kWh. The vehicle consumes about 20 kWh of energy per 100 kilometers under low load conditions. The company said that it is expected to expand the battery compartment to 800 liters in the future.
In terms of power, the QUANT prototype is equipped with four motors with a continuous power of 120 kW and a peak power of 170 kW. It can be driven by torque distribution for four-wheel drive and can also be used as a backup energy storage device for two supercapacitors in the car. The individual peak torque per wheel can reach 2,900 Nm. The acceleration of 100 kilometers takes only 2.8 seconds.
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