DE102009039651A1 - Method for initializing electrical connection in column load utilized in e.g. parking lot to supply electrical energy to e.g. electrically operable vehicle, involves inserting plug provided in load cable into one of power sockets - Google Patents

Abstract

The method involves producing a central initialization signal by an external user. Two non-used power sockets (5.1, 5.2) of a predetermined usage category are moved from a non-usage position in which the power sockets are arranged in a housing (2) and inaccessible by an user, to a supply position in which the power sockets are indirectly or directly accessible by openings (4.1, 4.2). A plug provided in a load cable connected to a vehicle is inserted into one of the power sockets. An independent claim is also included for a device for initializing an electrical connection for an electrically operable vehicle, comprising a housing.

Description

The invention relates to a method for providing a power connection in at least two outlets having charging station for an electrically operable vehicle, wherein for providing at least one outlet in a stowed position one of the outlet to be provided and when not using the socket by a same associated closure element shot opening in a Housing of the charging station is released and a plug of a connectable with the vehicle charging cable is inserted through the opening in the provided socket.

Furthermore, the invention relates to a device for providing a power connection for an electrically operable vehicle comprising a housing having a wall and a number of openings for insertion of a plug, comprising a number corresponding to the number of openings number of sockets for receiving the plug, wherein the openings Closure elements are assigned to close the openings when not using the associated sockets, and containing a signal detection unit for detecting signals.

Electrically operated vehicles are now charged with a charging current of 16 amperes, 32 amperes or 63 amperes. The maximum permissible charging current depends on the specification of the vehicle. To ensure safe charging of the vehicle, the maximum permissible charging current must not be exceeded. For this purpose, it is known that different charging stations are available for the different charging currents. Since publicly available charging stations for charging several vehicles at the same time usually have a plurality of power connections, different power connections can be provided for different charging currents. The disadvantage, however, is that the provision of different power connections increases the investment costs for the infrastructure. In addition, there is the risk in the provision of different power connections that in particular technically unexperienced users are unsure about the choice of the right, that is suitable for their vehicle charging station. These users may avoid charging their vehicle to publicly accessible charging stations, resulting in economic losses for the operator.

Furthermore, it is known that uniform power connections are used and the maximum permissible charging current is detected by the charging station itself. The vehicle is then charged with the maximum permissible charging current. The user can therefore choose any of the provided power connections and actuates an activation button assigned to the respective power connection. A closure element of an electrical outlet associated with the power outlet is thereby opened automatically or manually by the user, so that the plug of the charging cable can be electrically and mechanically connected through an opening in the charging station with the socket. The disadvantage here is that in particular users who know about the different charging currents are unsure when choosing the power supply. In addition, provide by the provided on charging points keys manipulation options, for example by the socket is released in case of improper operation of the button and a foreign body, such as a chewing gum, is inserted into the socket.

Object of the present invention is therefore to provide a method and apparatus for providing a power connection in a charging station for electrically operable vehicles such that the charging station is comfortable and intuitive to use and good protection against vandalism and incorrect operation is guaranteed.

To solve this problem, the invention in conjunction with the preamble of claim 1, characterized in that a central initialization signal is effected by an external user and that then all unused sockets a predetermined category of use from a non-use position in which the sockets in the housing for the user are arranged inaccessible, are provided in a deployment position in which the sockets are directly or indirectly accessible through the openings and a plug can be inserted into one of the provided sockets.

The particular advantage of the invention is that by providing all unused sockets of a given category of use to the user alone probaten, that is, the suitable for his vehicle power connector offers for use. In this case, the location of the user of the charging station must not be detected. All currently unused outlets of a given usage category are simply provided. The user then selects a power outlet that appears favorable in, for example, proximity to his vehicle, and inserts the plug through an opening in a housing of the charging station into the selected outlet.

For the purposes of the invention, the opening is closed when a closure element occluding the opening is locked or, for example can not be opened manually due to a self-locking arrangement. A socket is immediately accessible to the user if he can insert the plug through the opening without manual operation of the closure element or other element in the socket. The socket is indirectly accessible if it is arranged behind a manually operable by the user closure element and the plug can be inserted after a manual operation of the closure element in the socket. The closure element is not locked or otherwise secured against manual operation. The socket is inaccessible when the plug can not be plugged in directly or indirectly into the socket. This is achieved, for example, when the closure element closes the opening or the plug are not plugged into the housing due to the spatial arrangement of the socket in the housing then.

The closure element may be formed, for example, as a lockable flap which completely or partially covers the opening of the housing associated with the socket in a non-use position of the socket and is locked, for example, by means of an electromagnetically actuated locking pin. In the stowed position the flap is unlocked so that the user can open the flap and insert the plug through the opening into the socket. The socket is hereby indirectly accessible in the provisioning position.

The closure element may be formed, for example, as a motor-operated slide. In the non-use position, the slider is arranged in front of the opening so that the socket is not accessible. To provide the socket, the slide is operated by a motor and moved so that the socket is directly accessible through the opening.

The different categories of use may, for example, be formed as a function of a maximum permissible charging current. In this case, a number of power connections are installed in the charging station for charging the vehicle with 16 amps, 32 amps or 63 amps. The vehicle charging power supply with a charging current of 16 amps constitutes a first category of use, that for charging the 32 amp vehicle is a second category of use, and that for charging the 63 amp vehicle is a third category of use. It is also conceivable that the categories of use are formed on the basis of geometric or constructive peculiarities of the plug and take into account the currently missing standardization or international uniformity in this field. Furthermore, the usage categories may be local. Thus, a user may be provided with one or more sockets in his immediate vicinity, while remote sockets remain in the non-use position. Likewise, it is possible that unmonitored power connections or power outlets, which had problems in the past, are at least temporarily out of service until the next maintenance.

In order to determine the use category in a particularly simple way automatically, corresponding information can be transmitted with its own initialization signal. In the initialization signal, for example, information about the maximum permissible charging current of the vehicle should be made available. The initialization signal can for example be sent by the user via radio (mobile phone / SMS) to the charging station. Likewise, the user can be equipped with an automatically readable from the charging station RFID tag, the initialization signal is triggered when the RFID tag is sufficiently close to the charging station. Furthermore, the initialization signal can be triggered via a control element located on the charging station.

The concealed arrangement of the sockets in the non-use position prevents accidental or unauthorized access to the socket. Since in the non-use position of the socket at the same time the housing opening is closed by the closure element, a deliberate or accidental introduction of foreign substances is prevented in the housing. In the stowed position, the opening is unlocked and the outlet through the opening directly or indirectly accessible.

According to a preferred embodiment of the invention, the sockets to be provided are brought by means of a drive unit from the non-use position, in which the sockets are arranged behind a wall of the housing hidden in the ready position. Here, the sockets are arranged concealed in the non-use position behind a wall of the housing and arranged directly accessible in the housing in the ready position. The user is advantageously freed from any actuation of the charging station. He puts only the plug in one of the provided sockets. Since the user only needs one hand for this purpose, he can hold an umbrella, a working bag or a child with the second hand, for example.

According to a development of the invention, a selection signal is generated and forwarded to a control unit as soon as the closure element of a provided socket is manually operated and / or the plug into a provided Socket is inserted and / or the plug is locked in the socket by means of a socket or the plug associated locking element. With the selection signal the selected socket is marked and the charging process can be started. Advantageously, the charging process starts automatically with the present of the selection signal, it being possible to provide a suitable appearing delay interval between the presence of the selection signal and the start of the charging process. The operation of the charging station is thereby simplified for the user, since after the insertion of the plug can be dispensed with a separate triggering of the charging process, for example by pressing a button.

According to a development of the invention, the outlets provided in the provisioning position and unselected outlets are moved to the non-use position after expiration of a predetermined provisioning period and / or upon receipt of a reset signal from the provisioning position. The automated reset of the unselected sockets to the non-use position further enhances the protection of the charging station from vandalism. The reset may occur after a predefined provisioning period. This is advantageous, for example, when a user has given up his original charging desire. Decisive for this, for example, be a forgotten or defective charging cable. As a reset signal, for example, a removal of the user from the surroundings of the charging station detected via a movement sensor and / or an abort signal actively transmitted by the user to the charging station can be used.

According to a further development of the invention, the sockets provided in the provisioning position and not selected are returned to the non-use position as a function of the presence of the selection signal of at least one selected socket. Advantageously, by providing a plurality of sockets after selecting a provided socket, the unselected sockets can thereby be returned to the non-use position. In this way, the protection against vandalism and the security of use are improved.

According to a development of the invention, the movement of a socket into the non-use position is interrupted as soon as the control unit has detected a blockage of the socket to be moved to the non-use position on the basis of a characteristic change of at least one operating parameter of an engine of the drive unit. This advantageously prevents damage to the socket, the charging station or the drive unit in a blocking situation. Such a blockage situation can be the result of abuse, for example, the insertion of a stick or other foreign body in the provided socket. It is also conceivable that the plug was not completely inserted into the socket unintentionally, so that no selection signal is triggered and the socket is to be moved to the non-use position, for example after expiration of the provision period.

According to a development of the method, the charging process is automatically terminated after full charging of an energy storage device of the vehicle or by premature triggering of a termination signal. For the assignment of the termination signal to one of the selected sockets, identification information is transmitted with the initialization signal and / or with the termination signal. Advantageously, overcharging of the battery and damage to the same is prevented by the automatic termination of the charging process when the vehicle battery is fully charged. A premature termination of the charging process can be done, for example, if the user wants to use his vehicle before completing the charging process and with only partially filled energy storage. It is also conceivable that a termination signal interrupts the charging process as soon as a predefined amount of energy has been charged or a predetermined cost budget has been exhausted. The assignment of the termination signal to one of the selected sockets in this case causes parallel connected to the charging station vehicles can be loaded independently of the one termination signal on.

According to a development of the invention, the plug locked in the socket is unlocked after completion of the charging process and after receiving a release signal. Advantageously, it can be ensured by unlocking the plug after receiving a release signal that the charging cable is locked until the return of the user in the charging station and protected from theft. An unauthorized stealing of the charging cable is thereby avoided. The release signal can be automatically generated when the user returns, for example, in an automatic detection of the user by means of an RFID tag. Likewise, the enable signal can be sent together with the termination signal. This is particularly advantageous if the user wants to use his not yet fully loaded vehicle to continue. To assign the enable signal to one of the selected sockets, the identification information is transmitted with the initialization signal and / or with the enable signal. In this case, the transmission can take place directly at the charging station or at a central station which is spatially separated from the charging station and in turn communicates with the charging station.

According to a development of the invention, a removal signal is generated when removing the unlocked plug from the socket. Then, the socket is moved from the provisioning position to the non-use position. This advantageously ensures optimum protection against vandalism or inadvertent incorrect operation, since it is ensured that the socket which has just been released is no longer used inaccessible in the housing and the housing opening is closed by the closure element.

To solve this problem, the invention in conjunction with the preamble of claim 10, characterized in that each socket is associated with an actuating means such that the socket from a non-use position, in which the socket is arranged inaccessible in the housing and the opening by a closure means is plugged, can be provided in a stowed position in which the socket through the opening in the housing is directly or indirectly accessible for insertion of the plug into the socket, and that the operating units of all sockets of a given category of use are jointly actuated by means of a control unit for common provision all sockets of the default usage category in the deployment position.

The particular advantage of the invention is that the charging station in the non-use position reliably protected against vandalism, abuse and accidental misuse. In the provisioning position, the charging station is easy and intuitive even for technically inexperienced users. By providing all the outlets of a usage category, the user can select a power outlet that suits him or her.

According to a preferred embodiment of the invention, the sockets are movably arranged in the housing such that they can be brought into the provision position by means of a drive unit serving as an actuating unit from a non-use position, in which the socket is concealed behind the wall of the housing the sockets are accessible through their associated opening. Advantageously, the user is relieved by the active provision of the sockets and their immediate accessibility in the deployment position largely from the manual operation of the charging station. This reduces the risk of incorrect operation. At the same time, the user's hands and / or clothing do not pollute.

According to a development of the invention, the signal detection unit has a reception module for detecting wirelessly transmissible signals. Advantageously, this can be dispensed with the provision of buttons or other controls on the charging station. As signals, for example, an initialization signal for providing the sockets in the ready position, a termination signal to terminate the charging process or a release signal for unlocking the plug can be transmitted. The various signals can be transmitted without contact, for example by means of a mobile telephone / SMS, RFID (eg integrated into an ID card of the user or the plug to be connected to the socket) or via radio. Likewise, an optical transmission of the signals, for example by means of camera, proximity sensor or integrated into the vehicle light function identification information can be realized. Therefore, the manual insertion of the plug connected to the charging cable into the charging station is necessary at the beginning of the charging process. The charging station can be conveniently operated with one hand. With the second hand, for example, a work bag, a child or a screen can be kept.

Embodiments of the invention are explained below with reference to the drawings.

Show it:

1 a side view of a charging station for providing electrical energy for electrically operable vehicles,

2 a perspective view of the charging station in a non-use position and

3 a perspective view of the charging station in a ready position.

A device is called a charging station 1 designed to provide electrical energy for electrically operable vehicles and has a housing 2 with a wall 3 and with two on opposite sides of the housing 2 arranged openings 4.1 . 4.2 on. Through the openings 4.1 . 4.2 Can a plug into one of two in the housing 2 arranged sockets 5.1 . 5.2 be used. For the purposes of the invention, the term "vehicle" refers in particular to automobiles, two-wheeled vehicles, watercraft (boats), trailers (for example, caravans, sales trailers), motorhomes and aircraft.

Such charging stations 1 are provided for example in parking lots, at shopping malls or at work. For charging, the charging station 1 connected via a charging cable with a vehicle such that an energy storage of the vehicle can be charged. Since the charging process takes much longer than refueling conventional fossil fuel vehicles, the vehicles are typically overnight at the charging station 1 connected. While charging, the vehicles are usually unobserved.

Due to the application scenario must ensure safe provision of electrical energy, maximum protection of the charging station 1 against vandalism and abuse and a simple and intuitive operation of the charging station 1 be ensured by the user. The sockets 5.1 . 5.2 can do this individually or together from a non-use position in which the sockets 5.1 . 5.2 inaccessible from the outside behind the wall 3 of the housing 2 arranged and the openings 4.1 . 4.2 by their associated closure elements 6.1 . 6.2 are closed, are brought into a ready position, in which the closure elements 6.1 . 6.2 the same associated openings 4.1 . 4.2 release and a plug through one of the openings 4.1 . 4.2 in the opening 4.1 . 4.2 associated socket 5.1 . 5.2 can be inserted.

The sockets 5.1 . 5.2 belong to a common category of use, depending on the specification of the vehicle from each outlet 5.1 . 5.2 a charging current of 16 amps, 32 amps or 63 amps can be provided.

To transfer the at least one socket 5.1 . 5.2 from the non-use position to the ready position is detected by means of a signal detection unit 7 an initialization signal detected. The at least one outlet 5.1 . 5.2 is then by means of a serving as an actuator unit drive 8th , which is preferably electrically driven, brought from the non-use position to the ready position. The initialization signal can in this case, for example, wirelessly to the charging station 1 be transmitted. In this case, the signal acquisition unit instructs 7 a receiving module 9 on to receive the signal. The initialization signal, for example, from an external user via mobile / SMS to the charging station 1 or a distance to the charging station 1 arranged parent control unit sent and from there to the charging station 1 be transmitted. Likewise, the user may be equipped with an RFID card, so that the user when approaching the user to the charging station 1 from the signal acquisition unit 7 is identified. The identification of the user serves as an initialization signal for providing the at least one socket 5.1 . 5.2 , As a user in particular the driver or another vehicle occupant come into question. In addition, the vehicle itself can be identified, for example by means of an identifier transmitted via radio.

Alternatively, the initialization signal can be transmitted as an optical signal to the charging station. Alternatively, the initialization signal can be generated by means of controls that are connected to the charging station 1 or its associated central station are arranged and actuated by the user or another operator.

To provide the outlet 5.1 . 5.2 in the ready position and to carry out the charging procedure is as follows. After receiving the initialization signal is first at least one unused, that is located in the non-use position outlet 5.1 . 5.2 a predetermined usage category from the non-use item to the delivery position. In the ready position is that of the at least one provided socket 5.1 . 5.2 associated opening 4.1 . 4.2 no longer through the closure element 6.1 . 6.2 closed, leaving a plug in the provided socket 5.1 . 5.2 can be used. When inserting the plug into the provided socket 5.1 . 5.2 and / or locking the plug in the provided socket 5.1 . 5.2 by means of one of the socket 5.1 . 5.2 and / or the plug associated with the connector, not shown, a selection signal is generated and sent to a control unit 10 forwarded. The selection signal indicates that the plug is correctly plugged into the socket 5.1 . 5.2 inserted or in the socket 5.1 . 5.2 was locked. The selection signal can also serve as a start signal for the charging process, which can be started directly with the concern of the selection signal or after expiration of a delay period.

The sockets provided in the deployed location and not selected 5.1 . 5.2 are returned to the non-use position either after lapse of a predetermined provisioning period and / or upon receipt of a reset signal. For example, when providing both sockets 5.1 . 5.2 and after receiving a selection signal from one of the provided sockets 5.1 . 5.2 the provided and not selected outlet 5.1 . 5.2 be returned to the non-use position. The selection signal of the selected outlet 5.1 . 5.2 This is used as a reset signal for the other sockets 5.1 . 5.2 used.

The shipment of the socket 5.1 . 5.2 in the non-use position and / or the delivery position can be interrupted as soon as the control unit 10 based on a characteristic change of at least one operating parameter of a motor of the drive unit 8th a blockage or binding of the outlet to be moved to the non-use position and / or the ready position 5.1 . 5.2 has detected. Thus, the engine can be switched off or decelerate in a blockage. Damage to the drive unit, the housing and / or the socket can be avoided thereby. Also realized in this way is an over-force limitation, which is a method of the socket 5.1 . 5.2 For example, then prevented when a plug is not completely plugged into the socket or if a foreign object, such as a branch or a bubble gum, into the socket 5.1 . 5.2 was introduced.

The charging of the electrically operable vehicle is automatically terminated after full charge of the energy storage of the vehicle or prematurely after concerns a termination signal. The termination signal can be generated, for example, by the user when the vehicle is before fully charging the energy store from the charging station 1 want to disconnect. Similarly, the termination signal can be automatically generated when a predetermined balance is used up or a predetermined state of charge of the energy storage is reached.

The one in the socket 5.1 . 5.2 Locked plug becomes after completion of the charging process and reception of a release signal by means of the receiving module 9 and / or the signal acquisition unit 7 unlocked, leaving the plug from the socket 5.1 . 5.2 can be removed. The release of the plug is initially linked to the condition that the charging process is completed. As a result, the reliability of the charging station 1 guaranteed and prevents misuse. Furthermore, the plug is unlocked only after receiving a release signal. This ensures that the plug is not automatically unlocked upon completion of the charging process due to full charge of the vehicle's energy storage or reception of the termination signal and then from any third party out of the charging station 1 and or the vehicle can be removed. Instead, the user can trigger the enable signal as soon as he is aware of his vehicle and the charging station 1 approaches. A theft of the charging station 1 connected to the vehicle charging cable can be prevented in this way.

To the termination signal and the enable signal of one of possibly several selected outlets 5.1 . 5.2 the charging station 1 to assign, with the initialization signal and / or with the termination signal and / or with the enable signal identification information to the charging station 1 transmitted. With the identification information on the one hand the user is identifiable. On the other hand, user-specific presettings, for example the number of sockets to be provided, can be set via the identification information 5.1 . 5.2 or information about the method of payment. It is also conceivable that the identification information include a personal key, a password or the like. This avoids misuse due to unauthorized use.

The various signals (initialization signal, selection signal, reset signal, termination signal, enable signal) are - if they are transmitted wirelessly - from the receiving module 9 or - if they are generated via controls - by means of the signal detection unit 7 received or recorded. From the signal acquisition unit 7 the signals are sent to the control unit 10 forwarded. The control unit 10 then controls an actuating means of the drive unit 8th or an actuating means actuating the locking element.

According to an alternative embodiment of the invention, the sockets 5.1 . 5.2 be assigned to different categories of use. In this case, the user is provided only the socket facing him. The position of the user or the vehicle is determined by optical sensors.

It is understood that the socket of the charging station can also be designed as a plug and the plug of the charging cable as a socket. Thus, socket and plug each form a plug-in element of a plug-in device for electrical connection.

Claims (12)

A method for providing a power connection in a charging station having at least two outlets for an electrically operable vehicle, wherein one of the outlet to be provided and released when not using the socket by a closure element associated therewith released to provide at least one outlet in a housing of the charging station is inserted and a plug of a vehicle-connectable charging cable through the opening in the provided socket, characterized in that is caused by an external user, a central initialization signal and then that all unused sockets ( 5.1 . 5.2 ) of a predetermined use category from a non-use position in which the sockets ( 5.1 . 5.2 ) in the housing ( 2 ) are arranged inaccessible to the user, are provided in a staging position in which the sockets ( 5.1 . 5.2 ) through the openings ( 4.1 . 4.2 ) are directly or indirectly accessible and a plug in one of the provided sockets ( 5.1 . 5.2 ) can be used. A method according to claim 1, characterized in that the sockets to be provided ( 5.1 . 5.2 ) by means of a drive unit ( 8th ) from the non-use position in which the sockets ( 5.1 . 5.2 ) behind a wall ( 3 ) of the housing ( 2 ) are arranged concealed, are brought into the ready position, wherein the sockets are arranged directly accessible in the housing. Method according to claim 1 or 2, characterized in that when the plug is inserted into the provided socket ( 5.1 . 5.2 ) and / or locking the plug in the socket ( 5.1 . 5.2 ) by means of one of the provided socket ( 5.1 . 5.2 ) and / or the plug associated with the locking element generates a selection signal and to a control unit ( 10 ) is passed to identify the selected outlet ( 5.1 . 5.2 ) and / or to start a charging process. Method according to one of Claims 1 to 3, characterized in that the sockets (not provided) provided in the provisioning position ( 5.1 . 5.2 ) after expiration of a predetermined provisioning period and / or after receiving a reset signal in the non-use position. A method according to claim 4, characterized in that provided in the provisioning position and unselected sockets ( 5.1 . 5.2 ) depending on the presence of the selection signal of at least one provided and selected outlet ( 5.1 . 5.2 ) are returned to the non-use position. Method according to one of claims 1 to 5, characterized in that the removal of a socket ( 5.1 . 5.2 ) is interrupted to the non-use position as soon as the control unit ( 10 ) based on a characteristic change of at least one operating parameter of a motor of the drive unit ( 8th ) a blockade of the outlet to be moved to the non-use position ( 5.1 . 5.2 ) detected. Method according to one of claims 1 to 6, characterized in that automatically after fully charging an energy storage device of the vehicle or by premature triggering of a termination signal, the charging process is terminated, wherein the assignment of the termination signal to one of the selected sockets ( 5.1 . 5.2 ) are transmitted with the initialization signal and / or the termination signal identification information. Method according to one of claims 1 to 7, characterized in that after the completion of the charging process and after receiving an enable signal in the socket ( 5.1 . 5.2 Locked plug is unlocked, wherein the allocation of the enable signal to one of the selected sockets ( 5.1 . 5.2 ) With the initialization signal and / or with the enable signal, the identification information is transmitted. Method according to one of claims 1 to 8, characterized in that when removing the unlocked plug from the socket ( 5.1 . 5.2 ) a pickup signal is generated and then the socket ( 5.1 . 5.2 ) is moved from the staging position to the non-use position. Device for providing a power connection for an electrically operable vehicle comprising a housing having a wall and a number of openings for insertion of a plug, containing a number corresponding to the number of openings number of sockets for receiving the plug, wherein the openings closure elements are associated for closing the openings when not using the associated sockets, and comprising a signal detection unit for detecting signals, characterized in that each socket ( 5.1 . 5.2 ) an actuating means (drive unit 8th ) is assigned such that the socket ( 5.1 . 5.2 ) from a non-use position where the socket ( 5.1 . 5.2 ) in the housing ( 2 ) is arranged inaccessible and the opening ( 4.1 . 4.2 ) by a closure means ( 6.1 . 6.2 ) is ready to be provided in a deployment position in which the socket ( 5.1 . 5.2 ) through the opening ( 4.1 . 4.2 ) in the housing ( 2 ) is directly or indirectly accessible for insertion of the plug into the socket ( 5.1 . 5.2 ), and that the operating units (drive unit 8th ) of all sockets ( 5.1 . 5.2 ) of a given category of use by means of a control unit ( 10 ) are jointly actuable for the common provision of all sockets ( 5.1 . 5.2 ) of the default usage category in the staging position. Device according to claim 10, characterized in that the sockets ( 5.1 . 5.2 ) so movable in the housing ( 2 ) are arranged, that these by means of serving as an actuating unit drive unit ( 8th ) from a non-use position in which the socket ( 5.1 . 5.2 ) behind the wall ( 3 ) of the housing ( 2 ) is arranged concealed, be brought into the provisioning position in which the sockets ( 5.1 . 5.2 ) through the openings ( 4.1 . 4.2 ) are accessible. Apparatus according to claim 10 or 11, characterized in that the signal detection unit ( 7 ) a receiving module ( 9 ) for detecting wireless transmissible signals.

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