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Essen, Germany

RWE AG , is a German electric utilities company based in Essen, North Rhine-Westphalia. Through its various subsidiaries, the energy company supplies electricity and gas to more than 20 million electricity customers and 10 million gas customers, principally in Europe. RWE is the second largest electricity producer in Germany. RWE previously owned American Water, the United States' largest investor-owned water utility, but this was divested in 2008. Subsidiary RWE Dea produces some of the oil and gas its parent sells and 3 billion m3 of natural gas . It is the largest German investor in Egypt . Also RWE has begun building more wind farms, a renewable energy business. Wikipedia.


The invention relates to a plug device for a charging cable for connecting an electric vehicle to a charging station, comprising a housing, electrical contacts associated with the housing for connecting to a connecting device in the charging station or in the electric vehicle, and a coding means arranged in the housing for the value of the amperage which may be transmitted via the charging cable. The invention further relates to a system consisting of a charging cable and a charging station and/or an electric vehicle as well as a charging cable equipped with the plug device.


Patent
Rwe Ag | Date: 2012-02-09

Method and device for controlling charging stations for electrical vehicles. In order to minimise peak power demands in at least two charging stations


Charging cable locking device for electric vehicles with a receptacle


Patent
Rwe Ag | Date: 2015-09-23

Method for operating a charging station for electric vehicles in which a charging power is negotiated between a charge control device of the electric vehicle and the charging station, the charge control device controls a charging current which is transmitted from the charging station to the electric vehicle in accordance with the charging power negotiated, wherein a continuous power rating and a maximum power of the charging station which is greater than the continuous power rating are determined. In order to optimise the charging power and to accelerate a charging operation, it is proposed that a charging power which is above the continuous power rating and which at most corresponds to the maximum power is first negotiated, that the temperature in the charging station be monitored, and that, when a limit temperature is exceeded, a new charging power which at most corresponds to the continuous power be negotiated.


Method for securing a charging process of a vehicle (

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