Flywheel or battery
The network that can be accessed with a Powerpass by ŠKODA AUTO, a.s. card includes the charging stations that ŠKODA dealers are gradually building on their premises. These stations can make use of some of the smart new ideas that make charging easier, more effective or cheaper, or all three at once.
The first example is making use of recycled batteries from electric cars and plug-in hybrids. ŠKODA dealers are installing public 11kW or 22 kW charging stations on their premises, facilitated by the ŠKODA iV energy storage system. That is in fact a large battery module with a 200 kWh capacity that is made from used batteries: it consists of 4 battery sets from electric cars or 20 sets from plug-in hybrids. The batteries are charged at night with cheap-tariff electricity, and in the daytime day they help make the network more stable. During the day, electricity generated from solar panels, for example, can be stored in the batteries.
When the Kinetic Power Booster is at “full charge”, the flywheels spin at 18,000 revolutions per minute. When a car is being charged, the speed gradually falls to 7,000 rpm - at that point the charging is halted because the storage facility is fully discharged.
A flywheel is another type of energy storage system. ŠKODA AUTO DigiLab is testing this technical solution in collaboration with Czech energy firm PRE and Israeli tech firm Chakratec. Known as the Kinetic Power Booster, this energy storage system is composed of a series of flywheels, so electrical energy is stored in them in the form of mechanical energy. The flywheels can convert this energy back into electricity very quickly. This technology makes it possible to charge electric cars twice as fast compared to the locally accessible network capacity and can be used where the network has insufficient capacity. When they aren’t in use, the flywheels are then “charged” again so they are ready to discharge their energy at full speed whenever a customer requires.