DE102010040787A1 - Charging device for charging battery of electric car, has electrical and/or motor propelled rotary latch moving loading socket from original position into end position for connecting loading socket with loading plugs - Google Patents

Abstract

The device has loading plugs (1) and/or a loading socket (2) connected with an extendible electric cable. A loading connector, another loading socket and an electrical and/or motor propelled rotary latch (4) move the loading plugs from original position into end position into the former loading socket or move the former loading socket from the original position into the end position for connecting the former loading socket with the loading plugs. A locking unit (5) locks a connection between the loading plugs and/or the former loading socket.

Description

The invention relates to a charging device for an electric vehicle with a preferably extendable electrical cable, wherein a charging plug or a charging socket are attached to one end of the electric cable. The charging device moreover comprises a further charging connection element, in particular in the form of a charging socket.

An electric vehicle is a vehicle that is powered by an electric motor. The electric motor draws its power via a battery, which is housed in the electric vehicle. This battery needs to be recharged after a discharge. For charging the battery is a charging device in the context of the present invention. The charging device is in particular part of the electric vehicle. Preferably, in this case, the electric cable is provided with a charging plug in order to plug it into a socket, so a charging socket can. If the electric vehicle to be charged, the electric cable is first pulled out of a container or interior and plugged the charging plug into a power outlet. The socket can be a standard socket as used in private homes. The charging plug is then also standardized accordingly. However, charging plugs and socket can also be designed so that they are adapted to special needs for an electric vehicle.

From the publication DE 10 2009 052 366 A1 goes out a charging device of an electric vehicle, which on the one hand a socket or a charging socket and on the other hand comprises a charging plug, which is connected to an electric cable. Charging plug and charging socket are housed behind one or two covers of the body of the electric vehicle. For charging, the charging plug can be pulled out after opening the corresponding cover and plugged into a socket. Conversely, an external charging plug connected to an electric cable can be plugged into the socket of the electric vehicle to charge the vehicle. From this document DE 10 2009 052 366 A1 There are several ways to fit the electric cable in the electric vehicle. Thus, a drum is proposed with indentation on which the electric cable can be wound up. Spring forces can be provided in order to be able to move an electric cable into an interior space. Optionally, a servomotor may additionally be provided.

In the socket of the motor vehicle, the charging plug of the motor vehicle is plugged in, if not charged, so as to fix the charging plug when not in use.

From the publication DE 44 46 406 A1 For example, a power reception plug is provided for charging a battery of an electric vehicle with both AC and DC power. The power receiving connector includes an AC receiving section and a DC receiving section separated therefrom. Both sections can be covered by a first cap. In the first cap, a second cap is integrated, which allows in the open state limited access to the AC section.

An electrical connection element for an electric vehicle, which is intended both for charging by means of direct current and for charging by means of alternating current, is also known from US Pat US 5,758,414 A known.

Against this background, it is an object of the invention to provide an apparatus and a method for a simple charging of an electric vehicle.

To solve the problem, a charging device comprises the features of claim 1. Advantageous embodiments will be apparent from the dependent claims.

The drive means causes, starting from a starting position, a charging plug is moved into its end position into a charging socket, in which the charging plug is connected to the charging socket for charging a battery. A charging plug must therefore be brought only in the starting position. Subsequently, the drive means connects the charging plug independently with the charging socket by moving the charging plug in the end position. Then flows a current, so a battery of the electric vehicle is charged. In an analogous manner, a charging plug is connected to a charging socket when a charging socket of the charging device is provided with the drive means.

A charging plug can be connected by the invention only with the charging socket when the charging plug is brought into the starting position. As a result, damage is avoided, which could arise when trying to move an incorrectly or unfavorably mounted charging plug with excessive force into a charging socket into it. The invention avoids such damage, which could result in an electric vehicle no longer being charged or, for example, a public charging station subsequently no longer being able to be used for charging or no longer being used for safety reasons. The same applies to the case that a charging socket is provided with the drive means.

Preferably, the charging socket is provided with the drive means, which is then able to detect a charging plug and move into the charging socket.

In one embodiment of the invention, the charging device comprises a sensor which is able to detect a starting position of a charging plug or a charging socket and to activate the drive means in dependence thereon. Only when or as soon as the detector detects the presence of a charging plug or a charging socket in the starting position, the drive means is activated by the sensor and moves the charging plug or the charging socket into the end position. Preferably, the charging socket comprises the sensor.

In one embodiment of the invention, a charging connection element, that is to say a charging socket or a charging plug, comprises a sensor which is able to detect an end position of a charging plug or a charging socket and to deactivate the drive means in dependence thereon. Only when or as soon as the detector detects the presence of a charging plug or a charging socket in the end position, stops the drive means and thus the movement of the charging plug or the charging socket into the end position.

In one embodiment of the invention, the drive means may move a charging plug or a charging socket from the end position to the starting position, for example following the receipt of a triggering signal. If a trigger signal is transmitted, then the drive means moves the charging plug or the charging socket from the end position to the starting position. This avoids damage that might otherwise occur if, for example, a charging plug is pulled out of the charging socket at excessive speed or vice versa.

In one embodiment of the invention, the charging plug or the charging socket is locked in its or in its end position, so for example in the non-prepublished German patent application 10 2010 003 523 known manner, ie using an actuator which comprises a latch which is attached to a housing wall of a first component and in particular to a housing wall of a charging socket. If the charging plug is in its end position or the charging socket is in its end position, then the bolt is moved through two holes, which are located on the one hand in the housing wall of the charging socket and on the other hand in the housing wall of the charging plug. Subsequently, the charging plug can no longer be pulled out of the charging socket. The latch of the actuator may preferably be moved by motorization between a starting position and a locking position. If the bolt of the actuator can be moved by motor, the actuator preferably comprises an emergency unlocking device, which allows a mechanical unlocking. Preferably, the emergency unlocking device can only be actuated from the interior of the vehicle in order to protect the emergency unlocking device from access by unauthorized persons. However, the latch of the actuator can also be moved electrically, for example, with the aid of a shape memory alloy or in some other way.

In one embodiment of the invention, the drive means comprises at least one engaging element which engages in the starting position in an engaging element of the other charging connection element (plug or socket) is able to engage, which is otherwise not connected to the drive element. With the help of the interlocking engagement elements it is achieved that the drive element can move the charging plug into the end position. In one embodiment of the invention, the meshing of the aforementioned engagement elements allows the drive means to move the charging plug from the end position back to its original position.

It is expedient that the drive means is electrically driven, for example with the aid of an electric motor, since electric current is available in any case due to charging at a charging station. In a preferred embodiment of the invention, the electric drive receives the power required for the operation of the charging station, not from a battery of the vehicle. Even with an empty battery, the electric drive can then be set in motion.

The drive means may comprise a shape memory alloy which causes or at least supports the movement of the charging plug from a starting position to an end position. A shape memory alloy is a material which by changing the temperature can suddenly change its shape as a function of an activation temperature. Actuators with a shape memory alloy are known from the prior art, for example from the document DE 20 2006 010 201 U1 or from the publication DE 199 34 827 C1 , For example, the actuators known from these two publications may be provided as drive means.

In a particularly preferred embodiment, the charging socket or the charging plug is provided with at least one locking mechanism, which comprises a rotary latch serving as a drive means and preferably a pawl for rusting the rotary latch. The rotary latch can thus be driven in particular by an electric motor.

A rotary latch in the sense of the present invention is a rotatably mounted component with a fork-shaped inlet slot, which is preferably attached to or at the charging socket. A then attached to the charging plug pin enters the inlet slot when the charging plug is inserted into the provided with the locking charging socket or brought into the starting position. The bolt is caught in the starting position of the catch. By motorized turning the catch, the charging plug is then pulled into the charging socket until reaching the end position or vice versa.

If the charging plug or the charging socket has reached the end position, the bolt can advantageously no longer leave the inlet slot of the rotary latch in one embodiment. The rotary latch then fulfills a dual function, since this on the one hand represents the drive means and on the other hand ensures that the charging plug can not be solved by simply pulling out of the charging socket.

Basically, the charging plug, the locking mechanism and the charging socket include the bolt in order to connect the charging plug with the charging socket particularly reliable. Preferably, however, a charging socket attached to the electric vehicle comprises the locking mechanism so as to be able to ensure that at least the user of the vehicle can open a lock provided by the locking mechanism and thus the user is in particular responsible for his vehicle during a charging process.

In the end position, a pawl of the locking preferably locks the catch so that it can not be rotated back into the starting position. The latching initially signals that the charging plug has reached its end position in the charging socket or vice versa and thus, for example, a charging process for an electric vehicle can begin. Locking of the pawl in one embodiment may be accompanied by actuation of a switch that activates charging of the battery. In particular, the corresponding movement of the pawl for a click then actuate a suitably placed switch.

The charging plug is particularly stable in the latched state of the catch, reliable and therefore shockproof connected to the charging socket. Accidental external shocks can not release the connection. This ensures that the charging plug can not accidentally come loose from a charging socket or vice versa. Such an embodiment is therefore particularly practicable when it comes to high reliability of the connection even under difficult external conditions such as in the case of charging at a public charging station.

The bolt is preferably from the charging plug or the charging socket laterally, and in particular perpendicular from a corresponding housing wall. Such a projecting bolt then also represents a highly visible visual element, which facilitates a fitting for placing the charging plug on the charging socket.

In order to be able to remove a charging plug inserted into the charging socket or vice versa, if necessary the pawl has to be moved out of its locking position. In one embodiment of the invention, there is an operating lever connected to the locking mechanism such that, by actuating the actuating lever, the locking pawl is moved out of its locking position, preferably purely mechanically. A movement of the actuating lever can be transmitted directly or indirectly, for example via a Bowden cable on the pawl. In particular, in the case of a mechanical unlocking is an emergency unlocking device, because it is effective even in case of failure of the electrical system. The actuating lever can also be designed to be electrically operated for unlocking.

In one embodiment of the invention, a charging device, preferably the charging socket, comprises two locking mechanisms serving as drive means. Between the two locks is the charging plug or charging socket. For reasons mentioned, the charging socket is preferably between the two Gesperren. The corresponding Ladeverbindungselement, so usually the charging plug then has two bolts. Each bolt enters into a ratchet when the charging plug is plugged into the charging socket - or vice versa - or brought into the starting position. By this embodiment, tilting is avoided because during a movement of the charging plug or the charging socket in the end position no one-sided load occurs.

If there are two ratchets, they are mechanically connected in one embodiment so that the components of the mechanism move synchronously due to the mechanical connection. On the one hand, such a tilting is counteracted further improved when a charging plug or a charging socket is moved from a starting position to the end position. On the other hand, so the number of required motor drives can be kept low because not for each locking a separate electric drive must be provided.

In one embodiment of the invention, each locking mechanism comprises a closing aid that the respective rotary latch moves from an initial position of the rotary latch in the main latching position. Such a Zuziehhilfe for a motor vehicle lock is for example from the document DE 199 42 360 A1 known. The closing aid moves the catch of the locking mechanism motorized in particular from a pre-locking position in the main locking position. A pre-locking position is a first detent position in which the catch is latched for the first time with a pawl. If the catch is rotated further in the direction of the end position, the catch is latched a second time in the end position by a pawl. This second detent position is called the main detent position.

The catch can also be moved motorized without an existing detent position immediately after retraction of a bolt towards the end position.

A charging plug can be connected by the invention only with the charging socket when the charging plug or the charging socket is brought into the starting position. This avoids damage that might occur if an improperly or unfavorably placed charging plug is attempted to move with excessive force into a charging socket or vice versa a charging socket in the direction of charging connector. The invention avoids such damage, which can result in an electric vehicle no longer being charged or, for example, a public charging station subsequently no longer being able to be used for charging or no longer being used for safety reasons.

In one embodiment of the invention, the charging plug or the charging socket is automatically brought to the starting position when a vehicle reaches a charging station suitable. Embodiments of this embodiment of the present invention may be apparent to those skilled in the art DE 10 2008 055 881 A1 . US 54 95 159 such as WO 03/061053 A1 remove. We include the corresponding disclosure content of these publications.

The invention makes it possible, with the aid of a microdrive used as a drive means to move the charging plug into the end position into a charging socket or vice versa and also to lock in the end position by means of the drive means. A control via a common electronics without additional cabling is possible. The dual function of the drive means contributes to a low weight and space requirements. The drive means can be provided at the same time with a mechanical emergency unlocking device, for example with an actuating lever which can be reached from the vehicle interior. After actuating the bolt, the locking device is mechanically unlocked. The charging plug can then be pulled out of the charging socket manually.

The claimed electrical cable is preferably removable or withdrawable electrical cable arranged in an interior in the case of storage. In particular, this charging cable includes a charging plug. This part of the charging device is preferably provided for charging with alternating current and set up accordingly. Overall, the associated electrical system and electronics are designed for electrical voltages that are regularly less than 250 V in the case of a single-phase alternating current. The - preferably fixedly mounted - further charging connection device, which is in particular a charging socket, is preferably designed and connected to the battery to be charged, that on this a charging with direct current is possible. An associated electrical system and electronics are in particular designed so that voltages of at least 300 V, preferably of at least 400 V, can be provided for charging with direct current.

The electric cable can be moved with a drive provided for this purpose and in particular with an electric drive. In contrast to spring forces, a uniform movement of the electric cable is possible with the aid of such a drive. With a uniform movement, an electric cable can be moved into the interior of the charger and stored orderly, without the need for a drum. It succeeds, for example, a helical or a meandering storage. The electric drive can be based on an electric motor or a purely electromagnetic drive. For an electric drive, a shape memory alloy can be used.

In the case of alternating current and three-phase, so a three-phase alternating current can be used. The applied voltage is then regularly between 150 V and 400 V.

When charging with alternating current and the said voltages are applied, the intended currents are regularly between 16 A to 63 A. The charging time for a complete charging of batteries of an electric vehicle is then usually several hours, for example of the order of 8 hours. With the help of direct current and a power of 70 to 80 kW / h, for example, on a public charging station that is basically intended only for such charging, the charging time for a complete charging of batteries of an electric vehicle on be shortened a few minutes, so for example to about 10 minutes.

To be able to charge comfortably, the charging device with electric cable and attached charging socket or charging plug includes a receiving channel for receiving the charging plug. The charging plug enters the channel at least partially when the electric cable is moved into an interior of the charging device. The channel is used to store the charging plug in the unused state. In this channel, the charging plug can get automated, without having to operate a special technical effort. Conversely, the charging plug can be moved out of the channel without much technical effort, both manually and automatically with the aid of a drive.

The channel can taper towards the interior, in which the electric cable can be stored, so as to further simplify the aforementioned movements of the charging plug. It can thus be provided, for example, a relatively large opening of the channel compared to the maximum diameter of the charging plug, so that the charging connector is particularly easy to get into this and, if necessary, manually grasped and pulled out of this.

In one embodiment, the end of the charging plug, which is connected to the electric cable, tapers in the direction of electric cable. This embodiment facilitates proper movement of the charging plug into the channel for reception and subsequent storage.

In one embodiment, the charging plug comprises a stop which limits a receptacle of the charging plug in the channel. Due to the limitation, the charging plug then in particular does not completely enter the channel and always protrudes at least partially opposite it. The partially protruding part of the charging plug can then be easily grasped and, if necessary, pulled out manually. Preferably, the protruding part of the charging plug is located in a trough, which is adjacent to the body of the electric vehicle and which can preferably be closed by a particular pivotally mounted flap.

In particular, the stop extends annularly around a housing of the charging plug and protrudes relative to the housing. The stop is preferably made of an elastic material, such as an elastomer, to dampen noise associated with impact of the stop on the edge of the channel entrance opening.

In one embodiment, the charging device comprises transport means which can move the electric cable both into an interior of the charging device and out of it. For moving the electric cable and charging plug so no manual activity is required, which increases the comfort. The movement by means of transport can be based on one or more drives and / or spring forces.

In particular, there are as transport one or more transport rollers which rest on the electric cable for transporting the electric cable frictionally and / or positively.

An interior of the charging device is used to accommodate the electric cable, as far as this has not been moved out. Due to the transport roller or transport rollers, the electric cable can be motorized very reliably, comfortably and smoothly out of the interior and transported into it, without having to provide a large space.

Movement of the electrical cable is electronically controlled and / or monitored in one embodiment of the invention. It is thus avoided that this can be exposed to excessive tensile stress.

To move the corresponding part of the electric cable motorized, there is in one embodiment, an electric drive for the transport rollers, such as an electric motor.

To ensure proper transport of the electrical cable out of the interior or into the interior, in one embodiment, one or more transport rollers are arranged at the opening of the interior, from which the electric cable can be moved out. The transport rollers can be arranged outside the opening or form the opening. However, the transport rollers are preferably arranged in the interior adjacent to the opening, since these are then housed protected at the same time.

In the interior, the electric cable is preferably mounted meandering. This form of accommodation can be achieved by the electric cable is only suitably transported into the interior. Since this is basically motorized and thus very uniform, this desired form of accommodation is reliably achieved, and in particular when the electric cable is moved horizontally into the interior.

In one embodiment, there is a horizontally leading into the interior guide comprising a support for the portion of the electric cable to be moved in and out. The desired meander-shaped folding is thus obtained particularly reliably when the electric cable is transported into the interior.

The width of the interior corresponds in one embodiment substantially to the width of the electrical cable therein. The corresponding, vertically upwardly extending walls of the interior then have a small distance to the adjacent meander-shaped electric cable. The small distance should on the one hand avoid that the electric cable can be trapped in the interior. On the other hand, it is ensured that the electric cable folds meandering in the desired manner. This serves to guide the electric cable when it is moved into the interior, so that the electric cable then folds in the desired manner particularly reliable meandering.

The maximum height and / or maximum length of the interior preferably exceeds the width of the interior by a multiple, for example when installed in an electric vehicle. In this way, a sufficiently large length of an electric cable can be accommodated meandering in the interior.

The electric cable is led out for the aforementioned purpose for achieving a meandering fold on one, preferably on two sides horizontally or at least substantially horizontally out of the interior and on one side in particular adjacent to or adjacent to the bottom of the interior and / or an opposite side adjacent to or adjacent to the top of the interior.

To avoid disturbances due to contamination, the electric cable is guided in one embodiment by one or more, preferably rotatably mounted and motorized driven cleaning brushes. In particular, one or more electric motors are provided for the drive. If the electric cable is moved into the interior and only cleaned by upstream cleaning brushes before the so cleaned section of the electric cable reaches transport rollers, so the transport rollers are particularly reliable protection against contamination.

The interior comprises in one embodiment an antechamber in which one or more cleaning brushes and / or one or more transport rollers and / or motorized drive means are accommodated and thus protected. The vestibule is not used to accommodate the electric cable, but only the adjoining part of the interior. Below the vestibule, electronics for the control of the means of transport and / or of one or more rotating brushes is expediently arranged. The electronics are thus protected against moisture, which could be transported in particular by the electric cable in the vestibule.

It is sufficient regularly an interior space that is a maximum of 50 cm, preferably at most 30 cm high and 60 cm maximum, preferably a maximum of 40 cm long, so as to accommodate a sufficiently long electric cable, so that a charging socket or a socket of a charging station can be achieved , In addition, if necessary, a volume for the aforementioned vestibule.

Preferably, the interior space at the bottom comprises a drain over which liquid which has reached the interior can flow out again. The drain expediently opens into a parallel channel in order to allow liquid to drain at a suitable point.

Preferably, at least a part of the charging device is designed to be pivotable. This pivotable part comprises said channel for receiving the charging plug and the further, preferably permanently mounted charging connection unit, which is provided in particular for charging by means of direct current. The pivotable part is mounted so that it can be pivoted out with respect to the body of the electric vehicle, so as to provide a particularly easy access to the charging plug and charging connection unit.

A charging socket or a charging plug has at least two poles for two electrical conductors in the case of direct current or single-phase alternating current. The provision of a third pole, which serves to ground, however, is appropriate. In addition, poles may still be provided, which serve control purposes.

In the case of a charging plug and a charging socket for three-phase current, more than two poles are provided for the charging current. These are in particular five poles. There are also optional poles for control purposes. The arrangement of the poles is preferably carried out in accordance with relevant standards and / or industry standards.

The charging device may also include more than two connection options, that is, more than two charging sockets or charging plugs, such as a connection option for single-phase alternating current, a connection for three-phase, so as to allow charging by private households, as well as a connection for DC power for fast charging at public charging stations.

The 1 sketched a charging plug 1 and a charging socket 2 an electrical plug connection. The charging plug 1 includes two bolts 3 , which is laterally at right angles to the cylindrical housing wall of the charging connector 1 protrude. The two bolts 3 are on opposite sides. That is why in the 1 just a bolt 3 to see.

Laterally on the charging socket 2 are two rotary traps 4 as well as two pawls 5 rotatably mounted. Will the charging plug 1 in the charging socket 2 put into it, so grasps each tentacle 6 the associated rotary latch 4 the respective bolt 3 in a starting position. The respective catch 4 is then rotated by an electric motor, for example by means of a known from the prior art Zuziehhilfe from the Ausgansstellung towards the end position. The charging plug is moved into the charging socket until the end position is reached. The two pawls 5 are biased by a spring, not shown, in the direction of the rotary latch. Is one each catch 4 pivoted to the end position, so locks each tentacle 4 every catch 4 with its end in the ramp dent 7 the pawl 5 one. Each bolt will now be from the load arm 8th every catch 4 held. charging plug 1 and charging socket 2 are now locked together.

The catch 4 can be around the axis 9 and the pawl about the axis 10 to be turned around. 1 shows the ratchet in the open position. In the 1 becomes an electric motor drive 11 sketched, which is arranged in the locking mechanism and which pivots directly a component of the locking mechanism, such as the pawl 5 or the catch 4 , Electric drives can be located remotely from the charging socket and operate via belts or Bowden cables, the locking in the desired manner. A corresponding space in the loading socket is therefore not necessarily available for motorized drives.

In the 2 a side view of a further embodiment of the invention is shown. A drive means and that an electric motor 11 drives a spindle 12 at. The spindle 12 engages in a sawtooth-shaped surface or contour 13 on the back of the rotary latch 4 one. Turning the spindle pivots the catch about its axis 9 around. The direction of rotation of the catch 4 depends on the direction of rotation of the spindle 12 from. By selecting the direction of rotation of the electric motor so the catch 4 either in the direction of the starting position or in the direction of the end position are pivoted.

With the help of the drive 11 So at the same time can the charging plug 1 in the charging socket 2 in and out of the charging socket 2 to be moved out. The drive 11 may further be such that in the end position the connection between the charging plug 1 and the charging socket is able to lock.

The embodiment in the 2 is particularly compact and manages with a particularly small number of parts including a very small number of electrical lines for drive and control.

That in the 2 The principle shown can also be realized with an electric motor which is arranged away from the locking mechanism. For example, via a belt drive or a chain drive, a remotely located motor can have a spindle 13 drive, which is arranged at the locking mechanism and engages in a sawtooth-shaped contour, so as to be able to pivot the corresponding component in the desired direction. With this principle, each pivotable component of a Gesperres be pivoted motorized, so for example, a pawl 5 ,

In the 3 the case is shown that a spindle 11 is rotatably supported, for example, at both ends and a chain 14 from a remotely located engine 11 is driven.

In the 4 the case is sketched that the biased by springs in the direction of the rotary latch pawls by means of Bowden cables 15 by remotely located electric drives 11 can be moved out of the notches. Similar constructions can be used to drive the rotary latches 4 be provided.

The 5 shows a charging device 16 that have an interior 17 and separated therefrom a connection device 18 includes. In the interior 17 is an electric cable 19 meandered. The one end of the electric cable 19 leads to the wall 20 in the lower area horizontally from the interior 17 out. This end is firmly attached, so for example pinched. This bottom leading out area of the electric cable 19 is indirectly or directly connected to the battery to be charged. Below this range, there is a procedure 21 coming from the interior 17 leads out. The ablaut 21 first leads down and then parallel to the interior 17 in order to be able to drain liquid from the interior at the desired location and out.

The other end of the electric cable 19 is in the upper part of the interior 17 horizontally led out and opposite the wall 20 , This end is with a charging plug 22 connected. The horizontal guidance of the electric cable 19 in the upper area is carried out with a support 23 , a drive roller pair 24 a rotatable one Bürstenpaar 25 and an opening area 26 , For the drive rollers 24 is there an electric motor 27 , the at least one of the two drive rollers 24 can drive and preferably the lower lying so as to get along with little space. An electric motor 28 serves to drive one or both, in particular rotatable brushes 25 ,

The charging plug 22 shows a rejuvenation 29 in the direction of the electric cable 19 , In addition, the housing of the charging plug 22 with a stop 30 provided, the annular around the housing of the charging plug 22 runs and protrudes from the housing. The stop 30 limits the insertion of the charging plug 22 in the channel 31 into it, the recording and storage of the charging plug 22 serves. The one due to the attack 30 opposite the canal 31 protruding part of the charging plug 22 is in a hollow 32 , which can optionally be closed by a not shown, pivotable cap.

In this hollow 32 There is also a charging socket 33 which allows the battery of the electric vehicle to be charged by means of direct current. With the charging socket 33 is an electric cable 34 connected, which leads directly or indirectly to be charged battery of the electric vehicle.

An electronics 35 in particular for a control of the drive rollers 24 is outside the interior 17 arranged to protect them from moisture, with the electric cable 19 in the interior 17 can be transported. A partition 36 separates the interior 17 in an anteroom for receiving the drive rollers 24 , the brush 25 as well as the engines 27 and 28 and in a main room where the electric cable 19 can be stored meandering.

The in the 5 The charging device shown has two largely mechanically separate devices and on the one hand, the connecting device 18 and on the other hand the interior 17 together with elements therein, so that the connecting device 18 swiveling in the bodywork 37 of the electric vehicle can be attached. This pivotal attachment is in the 6 shown. A detail of an electric vehicle or its body is shown 37 , which the pivotable connecting device 18 includes. The connection device 18 can from the unfolded position shown in the direction of the body 37 be pivoted, then to a consistent surface with the bodywork 37 to build. Charging socket and charging plug are no longer accessible after such folding and no longer visible. Will the hinged or pivotable connection device 18 panned out, the area becomes accessible in 7 will be shown. It is on the one hand to the movable charging plug 22 for three-phase current (see 5 ), who is in the hollow 32 and on the other hand around the charging socket 33 for direct current. In the case of in the 6 pivotal attachment shown comprises the trough 32 preferably no cap with which the trough 32 can be closed, as a protection and an optical cover by the pivoting in of the connecting device 18 is reached.

The pivotable connection device 18 can preferably be locked in the folded state to prevent unauthorized use.

In addition, the pivotable connection device comprises 18 preferably a further locking device to one in the charging socket 33 plugged in 38 to be able to lock. A locking is preferably carried out with an actuator, which comprises a movable out of the housing of the actuator bar. Is the connection between charging socket 33 and charging plug 38 locked, it can not be solved.

LIST OF REFERENCE NUMBERS

1

charging plug

2

charging socket

3

bolt

4

catch

5

ratchets

6

tentacle

7

Rasteinbuchtung

8th

load arm

9

axis

10

axis

11

electric motor drive

12

spindle

13

sawtooth-shaped surface

14

Chain

15

Bowden

16

loader

17

inner space

18

connecting device

19

electric cable

20

wall

21

procedure

22

charging plug

23

edition

24

Drive rollers, drive rollers

25

to brush

26

opening area

27

engine

28

engine

29

rejuvenation

30

attack

31

channel

32

trough

33

charging socket

34

electric cable

35

electronics

36

partition wall

37

body

38

charging plug

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102009052366 A1 [0003, 0003]
• DE 4446406 A1 [0005]
• US 5758414 A [0006]
• DE 102010003523 [0015]
• DE 202006010201 U1 [0018]
• DE 19934827 C1 [0018]
• DE 19942360 A1 [0029]
• DE 102008055881 A1 [0032]
• US 5495159 [0032]
• WO 03/0610053 Al [0032]

Claims (15)

Charging device for an electric vehicle with a preferably extendable electric cable ( 19 ) and an associated charging plug ( 1 . 22 ) and / or an associated charging socket ( 2 ) and with another charging connection element and in particular a charging socket ( 33 ), characterized by at least one drive means for moving the charging plug ( 1 . 22 ) starting from a starting position into an end position into a charging socket ( 2 ) or for moving the charging socket ( 2 ) starting from a starting position into an end position for connecting the charging socket ( 2 ) with a charging plug. Charging device according to one of the preceding claims with a locking device ( 5 ) for locking the connection between a charging plug located in the end position ( 1 . 22 ) and the associated charging socket ( 2 ). Charging device according to the preceding claim with an actuator or a catch formed from a catch and pawl locking device as ( 5 ). Charging device according to one of the preceding claims, wherein the drive means comprises an electrically and / or motor-driven rotary latch ( 4 ). Charging device according to one of the preceding claims with one of a housing of the charging plug ( 1 ) or the charging socket ( 2 ) projecting bolts ( 3 ) for interaction with a locking mechanism. Charging device according to one of the preceding claims with a drive for moving the electric cable, in particular for moving the electric cable ( 19 ) in an interior ( 17 ) of the charging device, wherein the drive for the electric cable ( 19 ), in particular one or more transport or drive rollers ( 24 ) connected to the electric cable ( 19 ) for transporting the electric cable ( 19 ) abut frictionally and / or positively. Charging device according to one of the preceding claims with a receiving channel ( 31 ) for receiving the with the electric cable ( 19 ) connected charging plug ( 22 ) or with the electric cable ( 19 ) connected charging socket. Charging device according to the preceding claim, in which the end ( 29 ) of the charging plug ( 22 ) or the charging socket that is connected to the electric cable ( 19 ) in the direction of the electric cable ( 19 ) rejuvenated. Charging device according to one of the preceding claims, wherein the charging plug ( 22 ) or the charging socket that is connected to the electric cable ( 4 ), a stop ( 30 ) comprising a receptacle of the charging plug ( 22 ) or the charging socket in the channel ( 31 ) limited. Charging device according to one of the preceding claims, in which the electric cable ( 19 ) meandering in an interior space ( 17 ) is stored or can be stored meandering. Charging device according to one of the preceding claims, in which the electric cable ( 19 ) on one, preferably on two sides horizontally or at least substantially horizontally from an interior space ( 17 ) is led out. Charging device according to one of the preceding claims, in which the electric cable ( 19 ) by one or more, preferably rotatably mounted and motorized driven cleaning brushes ( 25 ) is guided. Charging device according to one of the preceding claims, in which one or more cleaning brushes ( 25 ) and / or one or more transport rollers ( 24 ) and / or electric drive means ( 27 . 28 ) for it in an anteroom of the interior ( 17 ) are housed. Charging device according to one of the preceding claims, which is at least partially arranged out of the body of an electric vehicle swung out, and preferably laterally in the rear of the vehicle. Charging device according to one of the preceding claims with a sequence ( 21 ), which consists of an interior ( 17 ) of the charging device leads down.

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