Mahle says it will install 100 charging points in its own parking garage in Stuttgart-Bad.

The supplier is using ChargeBIG, a centralised, scalable charging infrastructure concept for fleet operators and drivers who leave their cars in a car park all day.

“Our corporate start-up ChargeBIG has a vision: in the future, the charging of electric vehicles will be widespread, low cost, very easy and clever,” said Mahle chairman and CEO, Jörg Stratmann.

“Today, this vision has become a reality in Bad Cannstatt.”

The development of the charging infrastructure in Mahle’s parking garage is the result of a project funded by the German Federal Ministry for Economic Affairs and Technology (BMWi) and carried out in collaboration with partners Fraunhofer ITWM and Eliso.

ChargeBIG is a management system for users of long-stay parking and can be integrated into existing infrastructure at low cost and without protracted conversion work. The system follows a new approach: charging as quickly as necessary rather than charging as quickly as possible.

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It is intended for use by as many vehicles as possible, among which the amount of electricity available is distributed intelligently. The ChargeBIG system is a solution for car parks where electric vehicles are left for relatively long periods of time; as in company parking garages, at airports, in underground garages for large residential buildings and in the case of fleet operators.

The ChargeBIG concept consists of a central control unit with permanently mounted cables and connector plugs instead of charging columns in the car park.

A central control unit distributes the available charging capacity across the parked vehicles using dynamic, phase-specific load management. This prevents unbalanced loads in the power supply. ChargeBIG responds to other consumers on the network and uses the electric vehicles as a controllable load, ensuring optimal utilisation of the available power supply.

Charging points can be maintained via central electronics. The system offers a further advantage in terms of safety, because the charging points are de-energised when not in use.