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EV INFRASTRUCTURE Charging stations go mobile


Temporary charging stations from Volkswagen provide infrastructure for car parks at event and other venues.


car parks or in the parking areas for outdoor events, for example.


V


MOBILE POWER BANK The mobile charging station works on a similar principle to power banks, devices familiar to smartphone users, who carry the power banks with them to top up their phone battery whilst away from home or a plug socket. The charging capacity of up to 360 kWh enables up to 15 e-vehicles to be charged in stand-alone operation. Thanks to quick charging technology, the charging process only takes 17 minutes on average. If the energy content of the integrated battery set is less than 20 percent, the depleted charging station is simply exchanged for a charged one. If, however, it is permanently attached to the power supply with up to 30 kW via alternating current, the battery pack perpetually recharges itself. The power bank can also be used for temporary


storage of sustainably generated power, such as solar or wind energy – and therefore supports CO2-neutral mobility.


GERMAN PILOT PROJECT The first mobile quick charging stations will be set up as early as the first half of 2019 in Volkswagen’s hometown of Wolfsberg in Germany as part of a pilot project, and will support the expansion of a charging infrastructure in the urban area. As of 2020, the charging station will also be implemented in other cities and communities. Thomas Schmall, Chairman of the Board of


Management of Volkswagen Group Components, says: “The mobile charging stations represent a decisive step toward an efficient network of charging points. They can be set up anywhere as required – with or without connection to the power supply. This flexibility enables a completely new approach for the rapid expansion of the charging infrastructure. Cities can, for example, find out the most suitable places for a permanent charging point before making major investments in developing the network. In addition, it will be possible to set up a large number of charging stations temporarily – exactly when and where they are needed.” In addition to electric cars, e-bikes can also


❱ ❱ Fully


discharged temporary charging


stations can be swapped out


for re-charging if still required at temporary locations


be charged. Up to four vehicles can be charged simultaneously: two with DC and two with AC connections.


SUSTAINABILITY According to Mark Möller, Head of Technical Development at Volkswagen Group Components, the new mobile charging stations offer a further crucial advantage in terms of sustainability. “It is only when an electric car is charged with sustainably generated power that it can claim CO2-neutral mobility. Our charging station is the first to offer the possibility of temporarily storing sustainably generated power,” he says. For example, the charging station can be charged specifically with solar or wind energy, which is then transmitted to the electric vehicles during charging. The power packs within the new charging station use the same battery technology as that found in Volkswagen electric cars. Since it is based on vehicle battery technology, the charging station allows batteries from electric vehicles to have this second life. Batteries lose charging capacity over time and if a vehicle battery has a defined, reduced residual capacity, it is exchanged. If this battery subsequently passes a thorough analysis, it can be reused in a mobile charging station.


Automotive Test & Validation Vol 2 No. 1 /// 19


olkswagen is developing its future mobile quick charging station, which can be set up flexibly and independently of the power supply wherever needed. The station can be set up in company


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