DE102010056381A1 - Motor vehicle has rear section with car body undercarriage and load carrier which is guided in extendable manner from rear section by sliding mechanism attached at car body undercarriage - Google Patents

Abstract

The motor vehicle (1) has a rear section (2) with a car body undercarriage (10) and a load carrier which is guided in an extendable manner from the rear section by a sliding mechanism (11) attached at the car body undercarriage. A mobile power generator is electrically connected with an electrical drive. The power generator is mounted at a support frame (9) by an adapter.

Description

The present invention is in the field of vehicle technology and relates to an electrically powered motor vehicle with a mobile power generator.

State of the art

Against the background of dwindling fossil resources, great efforts are being made to further improve electric powered vehicles. In practice, two variants of electrically powered vehicles are currently used. As hybrid electric vehicles they have an internal combustion engine and an electric motor, the electric drive is typically used only in addition to the drive by internal combustion. As pure electric vehicles, they only have one electric motor. Generally, electrically powered motor vehicles require a storage device for electrical energy for operating the electric motor. On the basis of the previous storage technology, however, purely electric motor vehicles have only a short range, so that frequent stops are required for charging the storage device. A major disadvantage here is that the charge of the storage device can take a very long time, for example several hours.

task

In contrast, the object of the present invention is to develop conventional electrically powered vehicles in an advantageous manner. This object is achieved according to the proposal of the invention by a motor vehicle having the features of the independent claim. Advantageous embodiments of the invention are indicated by the features of the subclaims.

According to the invention, an electrically driven motor vehicle with a self-supporting body is shown. The motor vehicle comprises a rear part with a body underbody, by means of which the passenger compartment or the vehicle interior is delimited downwards towards the outside environment. The body underbody of the rear end typically has longitudinal longitudinal profiles extending in the vehicle longitudinal direction, which are interconnected in the vehicle transverse direction for forming a rear frame structure, for example by two transverse profiles arranged offset from one another in the vehicle longitudinal direction. As usual, the gaps between the rear frame structure are closed by flat floor parts, whereby the body subfloor is formed, which can serve as a loading floor of a accessible via a trunk lid or a tailgate cargo space for filling with cargo. For the purposes of the present invention, the rear end of the motor vehicle extends over a rear region of the vehicle, which begins approximately at the level of the rear wheels and ends at the rear end of the vehicle, which is formed in particular by the bumper. Direction and location information here and hereinafter refers to the vehicle and its usual (forward) direction of travel.

The electric drive of the motor vehicle comprises, in a manner known per se, an electric motor and a vehicle-mounted, non-mobile storage device for electrical energy, which serves to operate the electric motor. The motor vehicle may, for example, be a pure electric vehicle which has only one electric motor, or a hybrid electric vehicle which has an electric motor and additionally an internal combustion engine for driving by fuel.

The motor vehicle comprises a load carrier, which is guided extendible by a vehicle outside of the body underbody attached sliding mechanism from the rear end. The sliding mechanism may be designed so that the load carrier to the rear (ie against the forward direction of travel in the vehicle longitudinal direction) is pulled out of the rear end, but basically is also conceivable, the sliding mechanism in such a way that the load carrier transversely, in particular perpendicular to the vehicle longitudinal direction , from the rear section is extendable. The sliding mechanism is fixedly attached to the body subfloor for this purpose, wherein attachment to the rear frame structure, in particular on the longitudinal and / or transverse profiles and / or on flat bottom parts between the rear frame profiles can be done. The sliding mechanism may comprise, for example, longitudinally displaceable rails, in particular telescopic rails, which are fastened to the underside of the body.

Furthermore, the motor vehicle comprises a mobile power generator, which is designed as a removable module and supported by the load carrier. The power generator is electrically connected to the electric drive. The mobile power generator can thus serve to operate the electric motor, either in addition or alternatively to the operation by electrical energy, which is removed from the vehicle-mounted storage device. The power generator may be formed in manifold ways. By way of example only, it may be stated that it may include a combination combustion engine and generator, wherein the generator may utilize the kinetic energy provided by the internal combustion engine for power generation. Equally, for example, it would also be possible to use the power generator on the basis of a Gas turbine or through the use of fuel cells to operate. This list is not exhaustive. Preferably, but not necessarily, the mobile power generator has a storage device for electrical energy, which may be formed for example as a battery or accumulator, capacity, kinetic energy storage, for example in the form of a flywheel or the like, and this list is not exhaustive.

In the motor vehicle according to the invention, the mobile power generator advantageously enables the provision of additional electrical energy in order to increase the range of the vehicle by electric drive and / or in addition electrical for special driving situations that require a lot of energy, such as acceleration, overtaking maneuvers or uphill driving To provide energy. So can be achieved by extending the range, for example, that always a charging station for the vehicle-mounted storage device for electrical energy can be approached. On the other hand, traffic safety in critical driving situations can be improved.

Due to the modular design of the mobile power generator, a simple provision of additional electrical energy is possible. The mobile power generator allows a targeted use when needed for additional electrical energy, for example, before taking a long drive, mountain or highway ride. A particular advantage results from the possibility of a simple change or replacement of the mobile power generator, which can be done, for example, at corresponding rental stations.

The mobile power generator is set in an advantageous manner to the extendable from the rear end load carrier, so that the attachment of the power generator to the vehicle designed in practice particularly simple. In particular, it is not necessary to provide installation space in the vehicle interior. This also has the advantage that during operation of the mobile power generator resulting gases, such as combustion gases, can be dissipated in a simple manner to the environment. Ingress of such gases into the vehicle interior can be reliably and safely prevented. Since the mobile power generator is a functional and structural unit, which in particular requires no fuel line to the motor vehicle, the risk of leakage of fuel by damage to the fuel line by force, for example in an accident, or by corrosion can be avoided.

In an advantageous embodiment of the motor vehicle according to the invention, the load carrier is designed in the form of a connected to at least a portion of a rear bumper support frame, which is pulled out of the rear end and in a rest position in which he is completely submerged in the rear end, can be moved. The support frame can be loaded in a variety of ways, for example by different adapters are used for different cargo. For example, the support frame can also serve for the carriage of bicycles. Advantageously, the mobile power generator can be removably mounted by an adapter on the support frame.

The mobile power generator is supported by the load carrier and is set for this purpose on the load carrier. For example, the power generator is mounted on the support frame or the load carrier has a receptacle in which the modular power generator is accommodated. Advantageously, the load carrier has a loading space having a loading box, which is in a retracted from the rear end working position for loading with the mobile power generator and in a rest position in which it is completely submerged in the rear end, drawer-like displaced. The loading box allows a particularly simple and practical attachment of the mobile power generator on the motor vehicle. For example, the loading space of the loading box may be provided with separate intermediate spaces in order to transport still further cargo in addition to the mobile power generator. Additionally or alternatively, the cargo space may be provided with attachment means for securing the power generator or other cargo, which can prevent the power generator from slipping during operation of the motor vehicle.

Particularly advantageously, the charging box for the mobile power generator is formed between the underside of the body and arranged below the body underbody underbody panel, wherein the loading box is rigidly connected to the underbody paneling. As usual, the underbody cowling is mainly used for improved aerodynamics on the underside of the vehicle, which improves handling and fuel consumption can be reduced. By this measure, the gap between the body underbody and the underbody panel is used for receiving the loading box in an advantageous manner.

The loading box can for example be firmly connected to at least part of a rear-side bumper, which can be achieved in an advantageous manner that the bumper or a part thereof serves as a handle for pulling out the loading box from the rear end and pushing into the rear end. In particular, the with the loading box connected part of the bumper form a loading space bounding the rear wall portion of the loading box, whereby a particularly large loading space volume can be achieved because the loading box extends directly to the vehicle end. On the other hand, the rear end can be mounted with a relatively small number of parts, which costs in production can be saved. Alternatively or additionally, the underbody covering may form a bottom section of the loading box which delimits the loading space, so that a further improvement with regard to saving of material and loading space volume can be achieved. For receiving the power generator, a relatively large loading space volume of the loading box is important, in particular with regard to its storage capacity for electrical energy.

The loading box may be removably secured to the underbody panel, for example, by at least one releasable attachment means, such as a clamp or latching mechanism, to remove the cargo box from the vehicle, allowing for a particularly easy loading with the mobile power generator. Likewise, the loading box with an openable and closable cover, in particular a hinged or hinged lid or a roller blind, be provided for the load compartment to protect the mobile power generator and other cargo while driving against splashing water and dirt. The cover may in particular be provided with a locking arrangement to protect the load from unauthorized removal.

Furthermore, it is possible that the loading box or the sliding mechanism is locked in the rest position by a locking device, so that unintentional or unauthorized pushing out of the loading box from the rear end is prevented in particular during operation of the motor vehicle or when the motor vehicle. A locking of the loading box can in particular be done automatically when inserting the loading box in the rest position, for example by an automatic locking mechanism. It may be advantageous if the locking device for locking the loading box in the rest position can be unlocked by an actuating device arranged in the vehicle interior, which allows a practical and easy unlocking of the loading box. It is also conceivable unlocking the loading box by an actuator on the outside of the vehicle.

In addition, a loading box in the rest position biasing clamping means, such as a compression spring may be provided, which is designed so that it presses the loading box when unlocking in a position in which a handle for further extraction is accessible. The handle may be the part of a multi-piece bumper firmly connected to the underbody paneling. Likewise, this part of the bumper may have an additional handle or form such.

The loading box is attached to the underside of the body by the sliding mechanism, and it is particularly advantageous in terms of loading space volume if the loading box in the vehicle transverse direction has an extent extending from at least one lateral longitudinal profile to another lateral longitudinal profile of the body subfloor. In particular, the loading box can extend on both sides of the motor vehicle beyond the two longitudinal profiles, for example all the way to side body panels. The cargo space of the loading box can be made particularly large. In this regard, it may also be advantageous if the loading box is at least partially accommodated in a space between the two lateral longitudinal profiles of the body underbody, which allows a particularly large dimension of the loading box in motor vehicle vertical direction, which is particularly advantageous for receiving the mobile power generator. In this case, the loading box can be adapted at least approximately to an outer contour of the longitudinal profiles in order to further increase the loading space volume.

In addition, the cargo box and / or the underbody paneling made of a light metal material and / or plastic, which has the advantage of a particularly low inertial mass when moving the loading box and facilitates the practical use. In addition, can be saved by the thus achieved lower vehicle weight energy during operation of the motor vehicle.

In a further advantageous embodiment of the motor vehicle according to the invention, the mobile power generator is encapsulated in a housing, which on the one hand high reliability can be guaranteed and on the other hand, a structurally closed unit is created, which greatly facilitates the handling of the mobile power generator, such as its replacement.

In a further advantageous embodiment of the motor vehicle according to the invention, the mobile power generator is provided with a communication device for communication with a control device for controlling the electric drive and / or a user interface. This allows the transmission of data between the mobile power generator and the motor vehicle, for example data concerning the identity and type of the mobile power generator as well as current or future power requirements. The communication device can wirelessly and / or wired to be connected to the control device for the electric drive and / or the user interface data technically.

In a further advantageous embodiment of the motor vehicle according to the invention, the mobile power generator is provided with a control device for controlling the power generation, wherein the control device is set up so that power can be generated on the basis of parameter values that describe a current and / or future operating state of the motor vehicle , The parameter values may be transmitted by the communication device to the mobile power generator. The control device of the power generator can also be set up such that parameter values which describe a future operating state of the motor vehicle are entered manually and / or provided with means by which such parameter values can be determined automatically. On the other hand, the control device of the power generator can also be set up such that parameter values which describe a current operating state of the power generator are transmitted to the control device and / or user interface of the motor vehicle and a control of the electric drive based on these parameter values takes place, so that power requirements for the Generator can be adjusted.

In the motor vehicle according to the invention, the mobile power generator supported by the load carrier is electrically connected to the electric drive. Advantageously, the mobile power generator for this purpose has an electrical connection part, which is designed so that it automatically comes into electrical contact with a vehicle-side electrical connection part (counterpart) when the power generator is brought into its working position on the load carrier. The electrical connection between the power generator and the motor vehicle can in particular also comprise data lines for a data-related connection of the communication device of the power generator to the motor vehicle.

In a further advantageous embodiment of the motor vehicle according to the invention, the mobile power generator is provided with a position determining device for determining the current geographical position of the power generator. A position determination can in particular be satellite-based, for example by the Global Positioning System (GPS). The determined position can be transmitted, for example by mobile radio to a central server and made available there for further use. This allows, for example, rental stations to obtain information about where leased power generators are currently located, thereby simplifying logistical processes.

In a further advantageous embodiment of the motor vehicle according to the invention, the mobile power generator is provided with transport rollers and / or a handle for transporting, which facilitates the practical use of the mobile power generator.

embodiments

The invention will now be explained in more detail by means of embodiments, reference being made to the accompanying drawings. Identical or equivalent elements are designated by the same reference numerals. Show it

1 a series of illustrations illustrating the mounting of a mobile power generator on an extendable support frame;

2 a perspective view of the mobile power generator and an adapter for mounting on the support frame of 1 ;

3 a perspective view of the motor vehicle with mounted on the support frame power generator and user interfaces;

4 an embodiment of the mobile power generator;

5 a perspective view of a motor vehicle with a charging box for the power generator;

6 another perspective view of the motor vehicle of 5 ;

7 a sectional view along section AA of 5 with inserted loading box;

8th a sectional view according to section AA of 5 with extended loading box;

9 a sectional view according to section BB of 5 ;

10 a sectional view according to section CC of

5 and views for illustrating a rail mechanism for extracting the loading box;

11 a sectional view according to section CC of

10 to illustrate two variants;

12 a diagram illustrating a method for operating the power generator.

In the figures, directions relating to the motor vehicle are indicated in the usual form with x, y, z, the x-direction indicating the vehicle longitudinal direction, the y-direction the vehicle transverse direction and the z-direction the vehicle vertical direction. As usual, the forward direction corresponds to the negative x-direction (-x).

Be first 1 in which a series of diagrams illustrating the assembly of a mobile power generator 3 on a support frame 9 one in total with the reference number 1 designated motor vehicle is shown with self-supporting body. In the pictures is a tail section 2 of the motor vehicle 1 shown in perspective. In the electrically driven motor vehicle 1 For example, it may be a pure electric vehicle having only one electric motor, or a hybrid electric vehicle having an electric motor and an internal combustion engine for driving by fuel. To power the electric motor, the motor vehicle 1 via a permanently installed, non-mobile memory device for storing electrical energy, for example accumulators, which is not shown in detail in the figures.

As in 1 shown, includes the rear end 2 a tailgate 4 , which is hinged to a roof cross member (not shown). The rear end 2 further includes a multi-piece bumper 5 that is made up of an upper bumper part 6 and a lower bumper part formed in the form of a panel 7 composed. In the lower bumper catcher part is a centrally located bumper middle part 8th used.

The rear end 2 further comprises a support frame designed as a load carrier 9 , the vehicle outside on an in 1 unrecognizable body underbody 10 is mounted. As usual, the body underbody sits 10 from a plurality of profile parts and flat floor parts together, which are made for example of a ferrous metal material, in particular sheet steel, and connected to each other by conventional joining techniques such as welding, riveting or clinching. However, it is also conceivable, the body underbody 10 partially or completely made of a light metal material such as aluminum or magnesium or a non-metallic material such as plastic.

In the present embodiment, the support frame 9 through a sliding mechanism 11 on the body floor 10 mounted, which in the form of longitudinally displaceable or telescoping rails 12 is realized, the support frame 9 with the bumper middle part 8th is firmly connected. Through the sliding mechanism 11 can the support frame 9 from a resting position in which he is in the rear end 2 completely sunk, from the rear end 2 pulled out to the rear. The bumper middle part 8th Can be used as a handle to pull out the support frame 9 to be used. The basic structure of such by telescopic rails 12 from the rear end 2 extendable guided support frame 9 is already from the German patent application DE 102 52 132 A1 known, so that it is unnecessary to go into detail here. The disclosure of this document is incorporated by reference, the content of this document being part of this specification ("incorporated by reference").

Let it be the different pictures of 1 considered in turn. In the upper figure, left side, a situation is shown in which the bumper center section 8th flush in the bumper 4 recorded and the support frame 9 in the rear section 2 of the motor vehicle 1 completely sunk. The middle figure, left side, shows a situation where the support frame 9 to the rear from the rear end 2 is completely pulled out. The power generator 3 can now on the support frame 9 to be assembled. In the lower figure, left side, is the power generator 3 in a position immediately before a first connection part 13 of the power generator 3 in electrical contact with a second connection part 14 on the support frame 9 arrives. Through the two connecting parts 13 . 14 can generate electricity from the generator 3 to the electric drive of the motor vehicle 1 are delivered to drive the electric motor. In addition, a data line for data connection of power generator 3 and motor vehicle 1 through the two connecting parts 13 . 14 be coupled. The upper figure, right side, shows a situation where the mobile power generator 3 by means of a releasable attachment mechanism, for example a latching mechanism, on the support frame 9 is detachably mounted. During assembly of the generator 3 get the two connecting parts 13 . 14 automatically in electrical contact. The here flat running power generator 3 has a height that allows the support frame 9 with power generator mounted on it 3 in the rear section 2 can be completely sunk. The insertion of the support frame 9 is symbolically indicated in the figure by an arrow. Finally, the lower figure, right side, shows a situation where the support frame 9 with mounted power generator 3 completely in the rear end 2 sunk and as needed power to the electric drive of the motor vehicle 1 can deliver.

2 shows a perspective view of the mobile power generator 3 and an adapter 15 for mounting the generator 3 on the support frame 9 , Accordingly, the adapter has 15 for example, four holes 16 , which, for example, by screw (not shown) can be penetrated to the adapter 15 together with the power generator 3 on the support frame 9 to fix. An attachment of the generator 3 on the adapter 15 can also at the holes 16 for example, by screw or locking connections (not shown). The adapter 15 allows a removable mounting of the generator 3 on the support frame 9 so that the power generator 3 in contrast to the vehicle-mounted storage device for electrical energy in a simple manner from the motor vehicle 1 can be removed. In addition to a restoration of its functionality, for example by filling with fuel, the power generator 3 be supplied to another use, for example, to provide electricity in a garage, outdoors or camping for operating various electrical consumers.

3 shows in the upper figure, the perspective view of a variant of the motor vehicle 1 in which the mobile power generator 3 on the extended support frame 9 mounted and unlike the flat power generator 3 from 1 due to its height not in the rear end 2 is retractable. The power generator 3 is behind the rear end 2 put into position. In the two lower figures shows 3 a user interface 17 for the vehicle interior, which may be designed, for example, as a mobile part (left illustration) or as a fixed installation (right illustration). The user interface 17 has a display 19 by which, for example, information regarding the operating state of the power generator 3 are representable. The intended for permanent installation variant of the user interface 17 also has a knob 18 by the control signals to the power generator 3 can be delivered. The user interface 17 is either wireless, for example by means of Bluetooth, Wifi or the like, or wired to the power generator 3 connected by data technology. In the latter case, the data connection of power generator 3 and user interface 17 for example, by the two coupled connection parts 13 . 14 respectively.

In 4 is an embodiment of the modular mobile power generator based on a sectional view (upper figure) and a perspective view (lower figure) 3 illustrated. Accordingly, the power generator includes 3 a housing 20 , in which various components are enclosed encapsulated. The housing 20 Protects the components from rain, dirt, dust, damage, incorrect operation and theft, and enables convenient transport of the generator 3 , The mobile generator 3 contains an energy generating device 21 , which is, for example, an internal combustion engine, and it would equally be possible for the power generation device 21 For example, form as a gas turbine or fuel cell. The power generation facility 21 This can be done by burning fuel in a fuel tank 22 is stored, kinetic energy for driving a power conversion device 23 produce. The energy conversion device 23 is here designed, for example, as an alternator or generator and capable of converting kinetic energy into electrical energy. The fuel used is, for example, gasoline, diesel, CNG, LPG, hydrogen or the like. via an exhaust device 26 For example, exhaust gas produced during combustion can be released to the environment. One in the case 20 housed cooling device 27 serves to cool the generator 3 , In a storage device 28 for storing electrical energy, the power generated in the power generator 3 get saved.

The power generator 3 further comprises a control device 24 , which with a plug-like connection part 25 electrically connected. The connection part 25 can with a correspondingly shaped plug on the motor vehicle 1 be connected to feed electricity into the electric drive. Alternatively, the connection part 25 be so designed that it is when mounting the generator 3 on the support frame 9 automatically in electrical contact with the motor vehicle 1 arrives. In the control device 24 is a communication device (not shown), by which the power generator 3 with a control device (not shown) for controlling the electric drive and / or with the user interface 17 can communicate wirelessly. Furthermore, on the housing 20 two lateral transport rollers 29 and a handle 31 attached, so that the power generator 3 can be transported in a simple manner rolling on the ground. The power generator 3 For example, it is designed so that it can provide an electric power in the range of 10-20 kW, especially 10-12 kW. The housing 20 is advantageously made of a light metal material or plastic to save weight.

In the 5 to 11 is a further embodiment of a motor vehicle 100 with one in the form of a loading box 119 executed load carrier for the mobile power generator 3 illustrated. The loading box 119 is on a body underbody 102 through a sliding mechanism 129 attached, which here for example in the form of longitudinally displaceable or telescopic rails 130 . 130 ' is trained. Of the Body underbody 102 has two lateral longitudinal profiles 103 , which extend in the vehicle longitudinal direction (x), and by not visible in the figures transverse profiles which extend in the vehicle transverse direction (y) are interconnected. The two longitudinal profiles 103 and the other profile parts with carrier function are part of a rear frame structure 104 which serves in particular as a crash load path for forces introduced during a rear impact into the motor vehicle body. The gaps in the area of the rear frame structure 104 are due to flat floor parts 105 , in particular floor panels, covered, which are each firmly connected to each other and with the carrier profiles. Through the body underbody 102 a cargo area is provided for an inboard rear cargo space, which has a tailgate 106 is accessible to the hinges not shown on an upper roof cross member 107 can be opened and closed. In the figures are the two rear wheels 108 shown on a composite link rear axle 109 are articulated. The torsion beam rear axle 109 has two trailing links 110 by a twistable but rigid torsion profile 111 connected to each other. The rear ends of the two trailing arms 110 are by a transverse stabilizer 118 connected with each other. Further recognizable are parts of an exhaust system with a transverse muffler 112 and a tailpipe 113 , The muffler 112 is located between the torsion profile 111 and the stabilizer 118 ,

The rear end 101 of the motor vehicle extends approximately from the rear wheels 108 to the rear to the rear end of the vehicle through a bumper 114 is formed. The bumper 114 is composed of several parts, here for example an upper bumper section 115 and a lower bumper section 116 , which is designed here as an aperture, for example. The bumper 114 closes with bodywork parts 117 at least approximately flush.

As in 6 illustrated, includes the rear end 101 of the motor vehicle, the loading box 119 , which are below the body underbody 102 is arranged. The loading box 119 extends in the vehicle longitudinal direction (x) in about the height of the stabilizer 118 to the lower bumper section 116 , In the vehicle transverse direction (y), the loading box extends 119 up to the two longitudinal profiles 103 , The loading box 119 can at least mentally in a cuboid front box section 120 and a rear box section 121 be divided. The rear box section 121 For example, it is designed to be inside the lower bumper section 116 at least approximately conforming to fit.

In 7 is a sectional view according to section plane AA of 5 shown. This sectional view is removable, that the loading box 119 in a Zwischenrum 122 between the body underbody 102 and one below the body underbody 102 arranged underbody paneling 123 located. In the 5 and 6 is the underbody paneling 123 not shown for the purpose of better recognizability of underlying structures. The underbody paneling 123 is designed as a flat component and ensures better aerodynamics or reduced air resistance on the underside of the vehicle. Significant effects of underbody paneling 123 are a reduced fuel consumption and a reduced noise generation while driving. The underbody paneling 123 extends a little further forward than the loading box 119 but ends before the wheel axles and the torsion profile 111 , Rear is the underbody paneling 123 with the lower bumper section 116 firmly connected, resulting in a harmonious flow area for the wind. The underbody paneling 123 can with more below the body underbody 102 arranged trim parts cooperate with respect to a reduced flow resistance, which is not shown in detail in the figures. The underbody paneling 123 is at the bottom or a floor 124 the loading box 119 by fasteners 125 attached. An attachment may, for example, by screw connection with the underbody paneling 123 and the floor 124 the loading box 119 passing through screws 126 respectively. Likewise, any other suitable attachment means 125 for fixing the underfloor lining 123 at the loading box 119 be used. Likewise, fasteners 125 be used through which the loading box 119 non-destructively detachable with the underbody paneling 123 is connected, for example, a releasable locking mechanism, so that the loading box 119 from the underbody paneling 123 can be removed. The loading box 119 sits down from the ground 124 , vertically oriented side walls 127 and a top cover 128 together, which together a cargo space 134 Surrounded for loading with cargo.

As in particular in the sectional view of 9 shown is the loading box 119 through a sliding mechanism 129 on the body floor 102 , here for example on the two longitudinal profiles 103 , attached. The sliding mechanism 129 comprises longitudinally displaceable or telescopic rails in the vehicle longitudinal direction (x) 130 . 130 ' , wherein on both motor vehicle sides in each case a pair of rails 130 . 130 ' with one on the longitudinal profile 103 mounted upper rail 130 and one at the loading box 119 mounted lower rail 130 ' interlocked. The loading box 119 can thus from the rear end 101 pulled back to a loading position for filling with cargo. The 7 and 9 each show a rest position of the loading box 119 in which she is in the interval 122 is included and up below the upper bumper section 116 extends. The loading box 119 is exclusively via the sliding mechanism 129 on the body floor 102 assembled. The underbody paneling 123 is exclusively at the loading box 119 mounted so that the underbody paneling 123 equally by means of the sliding mechanism 129 on the body floor 102 is appropriate.

In contrast, shows 9 the loading position of the loading box 119 in which she is from the rear end 101 pulled out to the rear and with respect to the upper bumper section 115 protrudes to the rear. In loading position, the loading box 119 be filled with cargo. For this purpose, the cover 128 at a hinge joint 133 be unfolded to the cargo space 134 to make accessible. The cover 128 is here, for example, designed as a hinged lid, the About a lock 131 and a latch 132 on the back sidewall 127 is lockable. The with the loading box 119 rigidly connected underbody paneling 123 comes with the loading box 119 moved together. The same applies to the underbody paneling 123 rigidly connected lower bumper section 116 used as a handle to pull out the underbody panel 123 can serve.

By a locking mechanism, not shown, the loading box 119 automatically locked in rest position, causing unintentional movement of the loading box 119 is prevented in loading position. Likewise, this is an anti-theft device for cargo in the loading box 119 created. By an equally not shown actuator, which is designed for example as a switch or lever and operatively coupled to the locking device, the loading box 119 be unlocked. The actuating device can be arranged for practical operation, in particular in the motor vehicle interior.

In the present embodiment is a clamping means 135 , For example, a compression spring, provided by the loading box 119 when unlocking a small piece in the direction of loading position is pushed backwards. As a result, the lower bumper section 116 in rest position with the upper bumper section 115 flush, slightly pushed back so that it is well gripped and used as a handle to further pull out the loading box 119 can serve. Likewise, a special handle on the lower bumper section 116 be provided. The clamping device 135 is when inserting the loading box 119 in the rear end 1 automatically tense. In 8th is one with the clamping device 135 coupled switch 136 illustrated, which schematically the triggering of the clamping device 135 illustrated as a result of unlocking the (not shown) locking device.

In the sectional view of 10 , which shows a section according to the transverse section plane CC, it can be seen that the loading box 119 in the vehicle transverse direction in each case up to the outer profile walls 137 the two box-shaped longitudinal profiles 103 extends. Through a trough-shaped bulge 138 of the body underbody 102 , which serves as a spare wheel well, is the loading box 119 below the two longitudinal profiles 103 , The two pairs of rails 130 . 130 ' are each at a lower profile wall 137 assembled. In 10 is still a pair of rails 130 . 130 ' showing how the two telescopic rails 130 . 130 ' form-fitting so interlocking, so that the one rail 130 ' against the other rail 130 in the vehicle longitudinal direction (x) can be moved. 6 shows a perspective view of a section of the rail pair on the top left 130 . 130 ' , right upper an enlarged detail view of the area circumscribed by the circle, and center below a sectional view according to the sectional plane AA.

In 11 are two variants of the rear end 101 represented solely by the assembly, shape and arrangement of the loading box 119 , as well as a lack of spare wheel well, from the rear end of the 5 to 10 differ. In the left part of 11 a variant is shown in which the loading box 119 in an area between the longitudinal profiles 103 and an aligned extension of the same is located. In particular, the loading box 119 designed so that they are with an upper part between the two longitudinal profiles 103 located and up to a flat bottom part 105 between the two longitudinal profiles 103 goes down, creating a particularly large cargo space 134 can be realized with a particularly high height in motor vehicle vertical direction (z). Accordingly, the sliding mechanism 129 on the one hand on both motor vehicle sides in each case on an outer side wall 127 the loading box 119 and on a lower profile wall 137 assembled. The also in 11 sliding mechanism shown 129 includes as an alternative to the rail pair of 10 a telescopic rail pair 130 . 130 ' in which the at the loading box 119 mounted rail 130 ' from the longitudinal profile 103 mounted rail 130 of baking moldings 139 is encompassed, with the last 139 Treads for between the rails 130 . 130 ' arranged rolls 140 form. The roles 140 are secured in roll cages 141 added. By this measure, the rails 130 . 130 ' be moved against each other with relatively little friction.

In the right part of 11 another variant is shown, which differs from the variant shown on the left only in that the loading box 119 at least approximately in fit to the box-shaped longitudinal profiles 103 is formed, causing the cargo space 134 can be further increased. The loading box 119 is in this variant not only between but also below the two longitudinal profiles 103 ,

It will now be referred to 12 taken, which is a diagram of operations of the mobile power generator 3 are illustrated, wherein the control device 24 of the power generator 3 through the communication device to the user interface 17 as well as to a control device, not shown, of the electric drive can transmit data. In the diagram, the reference numeral ( I ) the user interface 17 symbolizes which current parameter settings and recommendations can be displayed. Reference number ( II ) indicates that the system is the electrical connection of the generator 3 to the motor vehicle 1 automatically recognizes and adapts if necessary. Reference number ( III ) indicates that the system can analyze the electrical interface for maximum transmission. Reference number ( IV ) indicates that the system can identify appropriate maximum power, the type of signal transmission, and security protocols. Reference number ( V ) indicates that the system is capable of transmitting additional electrical energy in an appropriate amount to the electric drive via the electrical interface. Reference number ( VI ) indicates a feedback loop through which the performance and reliable operation of the generator 3 can be ensured. In particular, the system may detect when a desired power request from the power generator 3 can not be delivered and adjusts the power request accordingly.

Furthermore, the control device 24 for example, be arranged so that a future power requirement can be reliably met by previously generated electrical energy and in the storage device 28 is stored. This may for example be based on a corresponding programming by a user or be determined automatically on the basis of a determination of the current location and the places soon to be reached. It is also conceivable, however, that a future performance requirement is recognized self-learning.

The invention provides a motor vehicle with a mobile power generator that can be easily mounted on the vehicle to extend the range of conventional electrically powered vehicles. In addition, electrical energy can be made available for critical driving situations.

LIST OF REFERENCE NUMBERS

1

motor vehicle

2

rear End

3

power generator

4

tailgate

5

bumper

6

upper bumper part

7

lower bumper part

8th

Bumper center section

9

supporting frame

10

Body underbody

11

sliding mechanism

12

rail

13

first connection part

14

second connection part

15

adapter

16

hole

17

User interface

18

knob

19

display

20

casing

21

Energy generator

22

Fuel storage

23

Energy conversion device

24

control device

25

connector

26

exhaust device

27

cooling device

28

memory device

29

transport roller

31

handle

100

motor vehicle

101

rear End

102

Body underbody

103

longitudinal profile

104

Rear frame structure

105

the bottom part

106

tailgate

107

Roof crossmember

108

rear wheel

109

Torsion beam rear axle

110

Trailing arm

111

torsion

112

muffler

113

tailpipe

114

bumper

115

upper bumper section

116

lower bumper section

117

Body side

118

stabilizer

119

loading box

120

front box section

121

rear box section

122

gap

123

Underbody paneling

124

ground

125

fastener

126

screw

127

Side wall

128

cover

129

sliding mechanism

130, 130 '

rails

131

lock

132

bars

133

hinge

134

hold

135

clamping means

136

switch

137

profile wall

138

bulge

139

strip

140

role

141

roller cage

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 10252132 A1 [0045]

Claims (15)

Motor vehicle ( 1 . 100 ) with an electric drive, which comprises: a rear end ( 2 ) with a body underbody ( 10 ), a load carrier ( 19 . 32 ), which by one on the body underbody ( 10 ) mounted sliding mechanism ( 11 ) from the rear end ( 2 ) is pulled out, one of the load carrier ( 19 . 32 supported mobile power generator ( 3 ), which is electrically connected to the electric drive. Motor vehicle ( 1 ) according to claim 1, wherein the load carrier ( 19 . 32 ) in the form of one with at least one part ( 8th ) of a rear bumper ( 5 ) associated support frame ( 9 ), which is in a rest position, in which he in the rear end ( 2 ) is completely recessed, is displaceable. Motor vehicle ( 1 ) according to claim 2, wherein the power generator ( 3 ) through an adapter ( 15 ) on the support frame ( 9 ) is mounted. Motor vehicle ( 100 ) according to claim 1, wherein the load carrier as a loading box ( 119 ), which in a rest position in which they in the rear end ( 101 ) is completely recessed, is displaceable. Motor vehicle ( 100 ) according to claim 4, wherein the loading box ( 119 ) between the body floor ( 102 ) and an underbody paneling ( 123 ), wherein the loading box is rigidly connected to the underbody paneling. Motor vehicle ( 100 ) according to claim 5, wherein the loading box ( 119 ) with at least part of a rear bumper ( 114 ) is firmly connected. Motor vehicle ( 1 . 100 ) according to one of claims 1 to 6, in which the mobile power generator ( 3 ) in a housing ( 20 ) is encapsulated. Motor vehicle ( 1 . 100 ) according to one of claims 1 to 7, in which the mobile power generator ( 3 ) with a communication device for communication with a control device for controlling the electric drive and / or user interface ( 17 ) is provided in the motor vehicle. Motor vehicle ( 1 . 100 ) according to claim 8, wherein the power generator ( 3 ) with a control device ( 24 ), which is set up so that power can be generated on the basis of parameter values which describe a current and / or future operating state of the motor vehicle. Motor vehicle ( 1 . 100 ) according to claim 9, in which the control device ( 24 ) of the power generator is set up so that parameter values which describe a future operating state of the motor vehicle can be entered and / or automatically determined. Motor vehicle ( 1 . 100 ) according to claim 10, in which the control device ( 24 ) of the power generator is set up such that parameter values which describe a current operating state of the power generator are sent to the control device and / or user interface ( 17 ) of the motor vehicle and control of the electric drive takes place on the basis of these parameter values. Motor vehicle ( 1 . 100 ) according to one of claims 1 to 11, in which the power generator ( 3 ) an electrical connection part ( 13 ), which is designed such that it automatically comes into contact with a vehicle-side electrical connection part ( 14 ), when the generator is supported by the load carrier. Motor vehicle ( 1 . 100 ) according to one of claims 1 to 12, in which the power generator ( 3 ) a memory device ( 28 ), in particular a power storage device, for storing energy. Motor vehicle ( 1 . 100 ) according to one of claims 1 to 13, in which the power generator ( 3 ) is provided with a position determining means for determining the current geographical position. Motor vehicle ( 1 . 100 ) according to one of claims 1 to 14, in which the power generator ( 3 ) with transport rollers ( 29 ) and / or a handle ( 31 ) is provided for transporting.

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