Building a sufficiently dense network for really fast charging of electric cars, i.e. chargers with a power of at least 150 kW, is, according to many opinions, key to the development of electromobility. But building such chargers is difficult and expensive, not least because they usually require modification of the electrical connection.
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One of the ways to avoid this need could be the newly opened charger at the Volkswagen factory in Cvikov, Germany. It is essentially a gigantic power bank with a capacity of 570 kWh.
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96 battery modules from pre-production VW ID.3 and ID.4 units are hidden in the device, which Volkswagen calls PSC, i.e. “power storage container”. They charge slowly from the network, and when an electric car comes to them, they can discharge themselves and thus charge the electric car faster.
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Specifically, there are four charging stations with a maximum output of 150 kW, but they each have two connections, between which the maximum output is divided. Eight electric cars with a power of up to 75 kW can be charged here at the same time. And in addition to the power bank’s grid, it also feeds the photovoltaic panels.
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A net capacity of 570kWh means that a fully charged PSC should be able to charge seven fully discharged ID.4s or enyaqs with a 77kWh battery, even if they arrived close together, and still have some power left over. These cars can charge up to 125 kW and ideally take 38 minutes to charge from 5 to 80%.
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According to Volkswagen, this way it is possible to install fast chargers where otherwise only slow AC charging would be available.
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