Abstract: The invention relates to a method for operating a charging device for charging an electric energy storage device from a first charge state to a second charge state. The first charge state is lower than the second charge state, and the charging device is connected to an interface. The charging device communicates with the energy storage device and ascertains the charge state thereof. In an additional step, the charging device obtains the efficiency characteristic field of the electric energy storage device and the efficiency characteristic field of the charging device. The invention relates to a method for operating a charging device for charging an electric energy storage device from a first charge state to a second charge state. The first charge state is lower than the second charge state, and the charging device is connected to an interface. The charging device communicates with the energy storage device and ascertains the charge state thereof.

Abstract: The invention relates to an energy transmission device (1, 10) for the contactless transmission of electric energy, comprising several transmitting coils (2, 3, 11, 12, 13, 30, 31, 32), several receiver coils (4, 5, 14, 15), and a control device (6, 16) which is designed to sequentially control a predetermined number of the transmitting coils (2, 3, 11, 12, 13, 30, 31, 32) in an energy transmission mode. The invention further relates to a corresponding energy transmission method.

Abstract: The invention relates to a method for detecting a direct-current fault current in an electrical alternating-current circuit, wherein a rectifier unit (14) is connected to an alternating-current network (34) by means of a primary side (13) and provides a direct current on a secondary side (15) and wherein the alternating-current network (34) is protected by means of a fault-current circuit breaker (38), which interrupts the circuit if an alternating-current fault current greater than a specified alternating-current tripping threshold occurs. A direct-current fault current on the primary side (13) is measured and is compared with a specified direct-current tripping threshold. An alternating-current fault current is produced if the direct-current fault current lies above the tripping threshold. The invention further relates to a device (10) for detecting a direct-current fault current and to a charging apparatus (12) comprising such a device (10).

Abstract: The invention relates to a method for operating a charging device for charging an electric energy storage device from a first charge state to a second charge state. The first charge state is lower than the second charge state, and the charging device is connected to an interface. The charging device communicates with the energy storage device and ascertains the charge state thereof. In an additional step, the charging device obtains the efficiency characteristic field of the electric energy storage device and the efficiency characteristic field of the charging device. The invention relates to a method for operating a charging device for charging an electric energy storage device from a first charge state to a second charge state. The first charge state is lower than the second charge state, and the charging device is connected to an interface. The charging device communicates with the energy storage device and ascertains the charge state thereof.

Abstract: The invention relates to an energy transmission device (1, 10) for the contactless transmission of electric energy, comprising several transmitting coils (2, 3, 11, 12, 13, 30, 31, 32), several receiver coils (4, 5, 14, 15), and a control device (6, 16) which is designed to sequentially control a predetermined number of the transmitting coils (2, 3, 11, 12, 13, 30, 31, 32) in an energy transmission mode. The invention further relates to a corresponding energy transmission method.

Abstract: The invention relates to a charging/discharging station (2) for charging or discharging an at least partly battery-operated vehicle (14) via an inductively coupled pair of coils. The charging/discharging station (2) comprises in particular a computer device (12), in which spatial coordinates of parking areas (4) are stored and which has means to navigate a vehicle (14) to the parking area (4) by means of communication units (8, 16) by using image data of the vehicle (14) recorded by means of a camera device (10) and by using physical coordinates of the parking areas (4). The invention further relates to a method for operating such a loading/discharging station (2).

Abstract: The present invention relates to an inductive energy transfer system and a method for the diagnosis of a foreign object detection of an inductive energy transfer system. For this purpose, a defined fault is introduced into the region to-be-monitored between primary coil and secondary coil of the inductive energy transfer system, and the response of the foreign object detection to said defined fault is then evaluated.

Abstract: The invention provides a coil apparatus (100) for inductive power transmission, comprising an electromagnetic coil (102) for emitting and/or picking up an electromagnetic field (112) on a transmission side (106) of the coil apparatus (100), and comprising a housing wall (104), which covers the coil (102) on the transmission side (106) and is transmissive to the electromagnetic field (112). Furthermore, the coil apparatus (100) comprises a housing medium (108), which is enclosed by the housing wall (104) in such a way that, when a through-opening (110) is formed in the housing wall (104), the housing medium (108) passes through the through-opening (110). Alternatively, a housing vacuum is provided which is enclosed by the housing wall in such a way that, when a through-opening is formed in the housing wall, atmospheric air (118) passes through the through-opening. Among further aspects, a vehicle comprising such a coil apparatus and a method for inductive power transmission are provided.

Abstract: The invention relates to a method for detecting a direct-current fault current in an electrical alternating-current circuit, wherein a rectifier unit (14) is connected to an alternating-current network (34) by means of a primary side (13) and provides a direct current on a secondary side (15) and wherein the alternating-current network (34) is protected by means of a fault-current circuit breaker (38), which interrupts the circuit if an alternating-current fault current greater than a specified alternating-current tripping threshold occurs. A direct-current fault current on the primary side (13) is measured and is compared with a specified direct-current tripping threshold. An alternating-current fault current is produced if the direct-current fault current lies above the tripping threshold. The invention further relates to a device (10) for detecting a direct-current fault current and to a charging apparatus (12) comprising such a device (10).

Abstract: The invention relates to a charging/discharging station (2) for charging or discharging an at least partly battery-operated vehicle (14) via an inductively coupled pair of coils. The charging/discharging station (2) comprises in particular a computer device (12), in which spatial coordinates of parking areas (4) are stored and which has means to navigate a vehicle (14) to the parking area (4) by means of communication units (8, 16) by using image data of the vehicle (14) recorded by means of a camera device (10) and by using physical coordinates of the parking areas (4). The invention further relates to a method for operating such a loading/discharging station (2).

Abstract: The present invention relates to an inductive energy transfer system and a method for the diagnosis of a foreign object detection of an inductive energy transfer system. For this purpose, a defined fault is introduced into the region to-be-monitored between primary coil and secondary coil of the inductive energy transfer system, and the response of the foreign object detection to said defined fault is then evaluated.

Abstract: The invention provides a coil apparatus (100) for inductive power transmission, comprising an electromagnetic coil (102) for emitting and/or picking up an electromagnetic field (112) on a transmission side (106) of the coil apparatus (100), and comprising a housing wall (104), which covers the coil (102) on the transmission side (106) and is transmissive to the electromagnetic field (112). Furthermore, the coil apparatus (100) comprises a housing medium (108), which is enclosed by the housing wall (104) in such a way that, when a through-opening (110) is formed in the housing wall (104), the housing medium (108) passes through the through-opening (110). Alternatively, a housing vacuum is provided which is enclosed by the housing wall in such a way that, when a through-opening is formed in the housing wall, atmospheric air (118) passes through the through-opening. Among further aspects, a vehicle comprising such a coil apparatus and a method for inductive power transmission are provided.