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Combined Charging System (CCS)

The concept of the universal charging interface

The Combined Charging System (CCS) is a combined charging system for charging electric vehicles with alternating current (AC) and direct current (DC). Both AC and DC Vehicle Connectors can be charged via the Vehicle Inlet, which means that only one interface is required in the vehicle.

  • Conventional AC charging overnight in the garage or in parking lots when parked for longer periods of time
  • Fast DC charging in a few minutes at rest stops, restaurants, supermarkets, banks, etc.

The Combined Charging System (CCS) is standardized in IEC 62196-3 and SAE J1772. Connector geometries are available for Type 1 (North America) and Type 2 (Europe). The system was developed in collaboration with leading automobile manufacturers and is already used in a large number of electric vehicles. In 2013, the European Commission specified the use of the CCS Type 2 charging system in accordance with IEC 62196 as a uniform standard throughout Europe.

Your advantages

  • Maximum possible flexibility when charging the electric vehicle
  • Fast interim charging as well as charging overnight in the garage
  • Safe charging with the help of actuator locking and temperature monitoring of the power contacts
  • One charging system for the whole of Europe and the whole of North America

Actuator locking

Illustration of the actuator locking in the CCS Vehicle Inlet  

Actuator locking in the CCS Vehicle Inlet

As specified in the standard, the CCS Vehicle Inlets are equipped with an electromechanical locking actuator. It locks the Vehicle Connector to the side or directly to the locking clip in the pin connector pattern during the charging process. The actuator bolt is designed to withstand high pull-out forces.

Temperature monitoring

Illustration of the characteristic curve of the PT1000 temperature sensor  

Characteristic curve of the PT1000 temperature sensor

Monitoring the charging current is also necessary for a safe charging process. If the system should overheat, e.g., in the event of high outside temperatures or an overload, this is detected by the temperature-dependent PT1000 resistance temperature detectors. The temperature of the power contacts is communicated to the charging station via the corresponding signal outputs.

In the event of overheating, the charging station is then able to switch off the charging process or reduce the charging power. As per IEC 62196, the temperature increase may not exceed 105°C.


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Further information
  • Combined Charging System (CCS)

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