DE102017001285A1 - Motor vehicle and method for inductive energy transmission - Google Patents

Abstract

The invention relates to a motor vehicle (10) having at least one induction coil (20) and at least one magnetic field directing element (30, 40), by means of which a magnetic field generated during an inductive energy transmission between an external energy transmission device (90) and the induction coil (20) ( 50) relative to the at least one induction coil (20) can be aligned and / or guided, wherein the at least one magnetic field directing element (30, 40) relative to the at least one induction coil (20) is designed to be movable. A further aspect of the invention relates to a method for inductive energy transmission between an external energy transmission device (90) and an induction coil (20) of a motor vehicle (10).

Description

The invention relates to a motor vehicle having at least one induction coil and at least one magnetic field directing element, by means of which a magnetic field generated with an inductive energy transmission between an external energy transmission device and the induction coil can be aligned and / or guided relative to the at least one induction coil. A further aspect of the invention relates to a method for inductive energy transmission between an external energy transmission device and an induction coil of a motor vehicle.

Such an inductive energy transfer between an external energy transmission device and a vehicle is already known in the prior art as known. Such induction coils may, for example, be arranged together with an inductive charging plate on an underbody of the vehicle.

In order to carry out the inductive energy transmission more efficiently, systems are known from the prior art in which a distance between the induction coil and the energy transmission device can be adjusted and, above all, shortened before the energy transmission.

From the WO 2014/174358 A2 an energy absorbing device is known, which is movably received on a motor vehicle. The energy absorbing device comprises a ferrite core and a coil unit surrounding the ferrite core. In order to reduce the distance to an external charging coil, the energy absorbing device for inductive energy transmission between the charging coil and the energy absorbing device relative to the motor vehicle is lowered.

The DE 29 16 558 A1 describes a vehicle with an energy absorbing device for receiving inductively transmitted energy. The power receiving device can be raised and lowered relative to the vehicle. Thereby, the energy absorbing means can be arranged against an external power source such that an air gap between the power receiving means and a core of the power source can be kept particularly small to improve an energy transfer performance with an inductive energy transfer between the power source and the power receiving means.

The US 3914562 A shows a recording device for receiving transmitted during an inductive charging energy. The receiving device comprises a take-up spool and is movably received on a vehicle.

From the DE 10 2015 008 983 A1 For example, a pallet assembly is known which comprises a housing in which a ferrite and a secondary winding for receiving inductively transmitted energy are arranged.

Object of the present invention is to provide a motor vehicle and a method of the type mentioned, which allow a particularly low-cost alignment of a magnetic field in an inductive energy transfer.

This object is achieved by a motor vehicle having the features of patent claim 1 and by a method having the features of patent claim 10. Advantageous developments of the invention are given by the dependent claims.

The invention is based on a motor vehicle with at least one induction coil and with at least one magnetic field directing element, by means of which a magnetic field generated with an inductive energy transmission between an external energy transmission device and the induction coil can be aligned and / or guided relative to the at least one induction coil. "Aligning" means that field lines of the magnetic field can be oriented by means of the magnetic field rectifying element in a direction which is particularly favorable for the inductive energy transmission (efficiency-optimal). By "guiding" is meant that the magnetic field directing element influences field lines of the magnetic field at least over a particularly large proportion of a distance between the external energy transmission device and the induction coil in the inductive energy transmission. This "guiding" can take place in such a way that only a minimal air gap exists between the induction coil and the external energy transmission device during the inductive energy transmission. The magnetic field rectifying element may be formed, for example, as a ferrite element, to name just one example. The magnetic field directing element can also be designed to shape the magnetic field during the inductive energy transmission, to concentrate and additionally or alternatively to reinforce. By "concentrating" it can be understood that respective magnetic field lines of the magnetic field are brought closer to one another as a result of concentrating and thus can be bundled by the magnetic field directing element, for example.

The induction coil of the motor vehicle can generally be referred to as a secondary coil, whereas the external energy transmission device can be referred to as a primary coil for inductive energy transmission to the secondary coil (induction coil of the motor vehicle).

According to the invention, the at least one magnetic field directing element is designed to be movable relative to the at least one induction coil. This can be aligned relative to the (vehicle-side) induction coil, the magnetic field directing element for inductive energy transfer in an advantageous manner, wherein the induction coil can remain fixed to the vehicle fixed to the motor vehicle. In order to optimally align the magnetic field for inductive energy transfer and to additionally or alternatively guide it, it is therefore sufficient to move the magnetic field directing element in a position which is optimal for the inductive energy transmission relative to the induction coil, whereas the induction coil can remain in place.

As a result, a particularly low-cost alignment of the magnetic field in the inductive energy transfer is possible, especially - in contrast to known from the prior art systems - only the at least one magnetic field directing element for optimal efficiency alignment of the magnetic field is moved, whereas the induction coil does not have to be moved. As a result, a particularly energy-saving moving is possible. Another advantage here is that the induction coil - in contrast to known from the prior art systems - remain immobile even in a charging process, ie in the inductive energy transfer to the motor vehicle (fixed in the motor vehicle position), so that the induction coil permanently protected against damage or environmental influences. As a result, the induction coil is particularly resistant to interference. A particular advantage here is that respective, the induction coil connecting with an in-vehicle energy storage cable can remain stationary on the vehicle. Unlike systems known from the prior art, in which the induction coil is moved for energy transmission, a movement of the cables can be dispensed with by the induction coil arranged fixedly in the vehicle. The vehicle-internal energy storage can be designed as a high-voltage battery and can also be referred to as a "battery".

The induction coil, for example, at least partially introduced in a recess of the motor vehicle and thereby be set in a particularly protected position. The induction coil may surround a ferrite core and be covered by an inductive circuit board, so that the induction coil is particularly safe from possible damage. The indentation can be arranged, for example, on an underbody of the motor vehicle.

In an advantageous development of the invention, an adjustment unit is provided, by means of which the magnetic field directing element can be moved at least between a use position in which the magnetic field can be aligned and / or guided relative to the induction coil by means of the magnetic field directing element and a non-use position. This is advantageous because the adjustment unit enables a particularly low-effort movement of the at least one magnetic field directing element between the use position and the non-use position. In the non-use position, the at least one magnetic field directing element can be introduced at least in regions into a recess of the motor vehicle, thereby enabling a particularly space-saving stowage of the magnetic field rectifying element in its non-use position. In the non-use position, the magnetic field directing element can be spaced, for example, in the vehicle longitudinal direction or in the vehicle vertical direction from the induction coil, as a result of which an available installation space in the motor vehicle can be used particularly well.

The magnetic field directing element can be designed to be movable both relative to the induction coil and relative to any inductive charging plate covering the induction coil.

In a further advantageous embodiment of the invention. The magnetic field straightening element covers the induction coil at least in regions at least in the non-use position in the vehicle longitudinal direction and / or in the vehicle transverse direction. This is advantageous since the at least one magnetic field directing element and the induction coil can thus be arranged next to one another and thus particularly space-saving on the motor vehicle, at least in the non-use position of the at least one magnetic field directing element. The adjusting unit can thus generally be configured to displace the at least one magnetic field directing element at least in regions in the vehicle vertical direction relative to the induction coil. In addition, the adjusting unit can be designed to displace the at least one magnetic field directing element at least in regions in the vehicle transverse direction and additionally or alternatively in the vehicle longitudinal direction relative to the at least one induction coil.

In a further advantageous development of the invention, the adjustment unit has at least one positioning motor coupled to the magnetic field directing element, by means of which the magnetic field directing element is movable at least between the use position and the non-use position. This is advantageous because a particularly immediate movement of the at least one magnetic field directing element is made possible by the coupling of the servomotor with the magnetic field directing element. The servomotor can be, for example, in direct contact with the at least one magnetic field directing element, as a result of which further coupling elements are interposed between the Servomotor and the at least one magnetic field directing element can be dispensed with; As a result, a particularly simple and low-effort movement of the at least one magnetic field directing element by means of the servomotor is possible on the whole.

The at least one magnetic field directing element can also be designed to be movable by a pivoting movement by means of the at least one servomotor between the use position and the non-use position. Preferably, a reversal of the magnetic field directing element can take place during this pivoting movement. In this pivoting movement, the magnetic field directing element can thus be rotated, for example, about a loading point, wherein, for example, a rotation of the magnetic field rectifying element can take place by 180 °.

The bearing point can be arranged on an edge region or corner region of the at least one magnetic field directing element, whereby a simultaneous movement of the at least one magnetic field directing element, for example in the vehicle vertical direction and in the vehicle transverse direction or in the vehicle longitudinal direction, can take place during the pivoting movement. The pivoting movement can generally be understood as a rotational movement about this bearing point. By the pivoting movement (rotation) by 180 °, for example, an offset of the magnetic field directing element in the vehicle vertical direction as well as in the vehicle longitudinal direction and additionally or alternatively in the vehicle transverse direction can be effected. This is advantageously made possible by the pure pivoting movement, a displacement of the magnetic field directing element in different vehicle directions.

In particular, during this pivoting movement, a translation-free movement of the at least one magnetic field directing element can take place. In other words, in the pivoting movement, a pure rotation of the magnetic field directing element between its use position and its non-use position can be performed.

In a further advantageous development of the invention, the adjusting unit has at least one guide element, along which the magnetic field directing element can be moved and thereby displaced between the use position and the non-use position. This is advantageous because a particularly secure and precise movement of the at least one magnetic field directing element between the use position and the non-use position is made possible by means of such a guide element. The at least one magnetic field directing element can be mounted, for example, at one or more bearing points relative to the guide element.

In a further advantageous development of the invention, the at least one guide element has at least two element sections which are oriented at least substantially parallel to one another and which are connected to one another by an at least partially curved connecting section. This is advantageous because the guide element thus enables the at least one magnetic field directing element to be moved in different directions, for example in the vehicle vertical direction, vehicle transverse direction and additionally or alternatively in the vehicle longitudinal direction. The at least two element sections can preferably be spaced apart from one another, whereby a particularly favorable utilization of a construction space available on the motor vehicle is made possible.

For example, the at least two element sections may each allow a linear movement of the at least one magnetic field directing element. The at least partially curved connecting portion may allow a tilting movement of the at least one magnetic field directing element relative to the induction coil.

In a further advantageous embodiment of the invention, the at least one guide element is designed as a guide rail. This is advantageous since such a guide rail can be provided in a particularly cost-effective manner and enables a particularly reliable, guided movement of the magnetic field directing element. It is particularly advantageous if the magnetic field directing element is mounted on two opposite guide rails, whereby a particularly captive guiding the magnetic field directing element is made possible during its movement.

In a further advantageous development of the invention, at least two magnetic field directing elements are provided, between which the induction coil is arranged in the vehicle transverse direction and / or in the vehicle longitudinal direction at least in the non-use position of the at least two magnetic field directing elements. This is advantageous since different distances of the magnetic field directing elements can be set in their respective position of use by the at least two magnetic field directing elements. As a result, an optimal alignment of the magnetic field can be achieved in different embodiments of the induction coil. Thus, the magnetic field straightening elements, for example, in a, designed as a so-called double-D coil or solenoid coil induction coil, are arranged in the respective use position at a distance from each other to the magnetic field optimally, ie in terms of one, achieved in the inductive energy transfer Efficiency particularly favorable to align.

The induction coil can also be designed, for example, as a circular coil. If the induction coil is designed as a circular coil, then the at least two magnetic field directing elements can be applied to each other in their respective position of use in order to optimally align the magnetic field. It is also conceivable to provide a multiplicity of the at least two magnetic field directing elements. Accordingly, for example 4, 8 or 16 magnetic field directing element can be provided. This allows a particularly accurate alignment of the magnetic field in the inductive energy transfer, so for example during a charging process.

In a further advantageous development of the invention, the at least two magnetic field directing elements in their position of use cover the induction coil in the vehicle vertical direction at least in regions. This is advantageous, since in this way a particularly efficient alignment of the magnetic field in the inductive energy transmission is made possible, when the external energy transmission device is arranged, for example, on a substrate under the motor vehicle, in particular on a roadway.

A second aspect of the invention relates to a method for inductive energy transmission between an external energy transmission device and an induction coil of a motor vehicle by a magnetic field generated between the external energy transmission device and the induction coil, wherein at least one magnetic field directing element of the motor vehicle for aligning and / or guiding the magnetic field relative to the at least an induction coil is moved. The at least one magnetic field directing element can be moved independently of the induction coil, as a result of which the induction coil can be mounted fixed to the vehicle on the motor vehicle. The movement of the at least one magnetic field directing element may also be performed to compensate for positioning errors between the induction coil and the external energy transfer device.

The invention also includes developments of the method according to the invention, which have features as they have already been described in connection with the developments of the motor vehicle according to the invention. For this reason, the corresponding developments of the method according to the invention are not described again here.

• 1 eine Perspektivansicht auf einen Teilbereich eines Unterbodens eines Kraftfahrzeugs, an welchem eine Induktionsspule und zwei relativ zu der Induktionsspule bewegbar ausgebildete Magnetfeldrichtelemente angeordnet sind;
• 2 eine Perspektivansicht auf eine Verstelleinheit, welche zwei parallel zueinander angeordnete Führungselemente aufweist, an welchen die Magnetfeldrichtelemente bewegbar gelagert sind;
• 3 eine Schnittdarstellung des Kraftfahrzeugs;
• 4a-c verschiedene Gebrauchspositionen der jeweiligen Magnetfeldrichtelemente; und
• 5 eine schematische Darstellung einer Schwenkbewegung zumindest eines der Magnetfeldrichtelemente zwischen dessen Gebrauchsstellung und dessen Nichtgebrauchsstellung.

In the following, embodiments of the invention are described. This shows:

• 1 a perspective view of a portion of a subfloor of a motor vehicle, on which an induction coil and two relative to the induction coil movably formed Magnetrichtrichtrichtelemente are arranged;
• 2 a perspective view of an adjustment, which has two mutually parallel guide elements on which the magnetic field directing elements are movably mounted;
• 3 a sectional view of the motor vehicle;
• 4a-c various usage positions of the respective magnetic field directing elements; and
• 5 a schematic representation of a pivoting movement of at least one of the magnetic field directing elements between its position of use and its non-use position.

Charging systems for battery-operated motor vehicles, which can also be referred to as BEV (Battery Electric Vehicle), are generally known from the prior art. These inductive charging systems often have permanently installed pallet assemblies or adjustable pallet assemblies which serve to inductively receive energy. Both the pallet arrangement and, for example, a bottom plate of an external energy transmission device can be designed to be adjustable in height for inductive energy transmission. An adjustable pallet is used to balance different height levels between different types of vehicles. The aim is to set a constant small distance of the respective plates in order to achieve a high efficiency in the inductive transmission of energy.

However, the adjustable design of floor panels is associated with high costs and an adjustable pallet in the vehicle is extremely complex. So a complex and complicated mechanism must be kept in order to ensure an adjustment of the vehicle-side pallet. In addition, diverse, complex technical solutions for high-voltage cables (cables) and cooling lines are available to allow movement of the vehicle-side pallet.

The exemplary embodiments explained below are preferred embodiments of the invention. In the exemplary embodiments, the described components of the embodiments each represent individual features of the invention, which are to be considered independently of one another, and which further develop the invention independently of one another and thus also individually or in any other than the combination shown to be considered part of the invention. Furthermore, the described embodiments can also be supplemented by further features of the invention already described.

In the figures, functionally identical elements are each provided with the same reference numerals.

In 1 . 3 and 5 is an example of a coordinate system with a vehicle vertical direction H, a vehicle transverse direction L and a vehicle transverse direction Q of a motor vehicle 10 shown.
1 shows a portion of the only schematically illustrated motor vehicle 10 , which is a particularly low-effort alignment of a 3 shown magnetic field 50 allows for an inductive energy transfer. The car 10 has an induction coil in the present case 20 and two magnetic field rectifying elements 30 . 40 by means of which, in an inductive energy transfer between an external energy transfer device 90 and the induction coil 20 generated magnetic field 50 opposite the at least one induction coil 20 alignable and additionally or alternatively feasible. The energy transmission device 90 is also an example in 3 shown. A low-effort orientation of the magnetic field 50 This is possible because the two magnetic field directing elements 30 . 40 relative to the induction coil 20 are designed to be movable. The induction coil 20 is present in a recess 12 on an underbody of the motor vehicle 10 at least partially introduced and fixed. In the present embodiment, the induction coil 20 by means of an inductive pallet 22 demarcated from an environment of the motor vehicle. In other words, the inductive charging plate 22 covers the induction coil 20 in their arrangement in the indentation 12 ,

The car 10 also includes an adjustment unit 60 , by means of which the magnetic field directing elements 30 . 40 at least between a respective use position 32 . 42 and at least one respective non-use position 34 . 44 the respective magnetic field directing elements 30 . 40 are movable.

3 shows the two magnetic field rectifying elements 30 . 40 exemplary in their respective position of use 32 . 42 as well as in their respective non-use position 34 . 44 , In the use position 32 . 42 is the magnetic field 50 by means of the magnetic field directing elements 30 . 40 relative to the induction coil 20 aligned and additionally or alternatively feasible. In the non-use position 34 . 44 are the respective magnetic field directing elements 30 . 40 at least partially in respective recesses 36 . 46 introduced at least partially on the underbody of the motor vehicle, whereby a particularly space-saving stowage of the two magnetic field rectifying elements 30 . 40 in their respective non-use position 34 . 44 is possible. In summary, the magnetic field directing element 30 in its non-use position 34 in the recess 36 be arranged, whereas the magnetic field directing element 40 in its non-use position 44 in the recess 46 can be arranged as out 1 and 3 evident.

3 shows that the magnetic field directing elements 30 . 40 the induction coil 20 at least in the non-use position 34 . 44 in the vehicle longitudinal direction L and additionally or alternatively in the vehicle transverse direction Q can at least partially cover.

1 to 4c show that the adjustment unit 60 two servomotors 62 . 64 may have, which may be formed, for example, as electric motors. The servomotor 62 is present with the magnetic field directing element 30 and the servomotor 64 with the magnetic field directing element 40 coupled. The respective servomotors 62 . 64 can do this with the respective magnetic field directing elements 30 . 40 firmly and additionally be directly connected, whereby a complex, kinematic coupling can be omitted. By means of the servomotors 62 . 64 are the magnetic field directing elements 30 . 40 at least between their respective position of use 32 . 42 and their respective non-use position 34 . 44 movable.

2 shows particularly clearly that the adjustment 60 two guide elements 66 along which the respective magnetic field directing elements 30 . 40 by means of the respective servomotors 62 . 64 movable and thereby between the respective use positions 32 . 42 and the respective non-use positions 34 . 44 can be relocated. The two guide elements 66 can, as shown here, for example, be designed as respective guide rails. The guide elements 66 are arranged in the present example in the vehicle longitudinal direction L parallel to each other and at a distance from each other. In addition, the guide elements 66 two element sections each 68 . 70 on, which are oriented at least substantially parallel to each other and which by a, at least partially curved connecting portion 72 connected to each other. The respective magnetic field directing elements 30 . 40 are at respective storage locations 38 . 48 with the opposing guide elements 66 engaged. In the present embodiment, each of the two magnetic field directing elements 30 . 40 at four bearing points each 38 or in each case four storage locations 48 with the two guide elements 66 engaged.

At least one of the bearings 38 can simultaneously as by the servomotor 62 drivable pinion 74 be formed, which with at least one of the guide rails (guide element 66 ) can be in engagement, in this case directly with the servomotor 62 coupled magnetic field directing element 30 between its position of use 32 and its non-use position 34 to relocate.

Furthermore, at least one of the bearing points 48 at the same time as by the servomotor 64 drivable drive pinion 76 be formed, which with at least one of the guide rails (guide element 66 ) can be in engagement, in this case directly with the servomotor 64 coupled magnetic field directing element 40 between its position of use 42 and its non-use position 44 to relocate.

By driving the respective pinion 74 . 76 can the respective magnetic field directing elements 30 . 40 along the guide elements 66 and between the respective non-use position 34 . 44 and the respective use position 32 . 42 to be moved.

3 shows that the induction coil 20 in the vehicle transverse direction Q and additionally or alternatively in the vehicle longitudinal direction L at least in the respective non-use position 34 . 44 the two magnetic field directing elements 30 , 40 between the two magnetic field directing elements 30 . 40 can be arranged. By the arrangement of the two magnetic field directing elements 30 . 40 in the respective recesses 36 . 46 (In the respective non-use position 34, 44) is a particularly space-saving stowage of the two magnetic field rectifying elements 30 . 40 in vehicle vertical direction H above a ground interface 14 of the motor vehicle 10 allows. In the 3 shown external power transmission device 90 is in the present embodiment in a roadway 92 and thus in a subsurface of the motor vehicle 10 integrated. To the inductive energy transfer between the energy transfer device 90 and the induction coil 20 To enable particularly high efficiency, the respective magnetic field directing elements 30 . 40 by means of the respective servomotors 62 . 64 along the guide elements 66 and thereby of the respective non-use position 34 . 44 in the respective use position 32 . 42 emotional. In the respective use position 32 . 42 For example, the two magnetic field directing elements 30, 40 can be found in FIG 3 shown magnetic field 50 particularly effective guiding or aligning. As a result, a particularly efficient charging of a vehicle-internal energy store of the motor vehicle not shown here is possible 10 in the context of inductive energy transfer allows.

Fig. 4a to 4c show each different usage positions 32 . 42 the respective magnetic field directing elements 30 . 40 , From the synopsis of 4a to 4c it can be seen that by adjusting the magnetic field rectifying elements 30 . 40 by means of servomotors 62 . 64 Also, a tolerance compensation which, for example, at a relative offset in the vehicle transverse direction Q or vehicle longitudinal direction L between the external energy transmission device 90 and the induction coil 20 can occur can be compensated.

From the synopsis of 2 and 4a-c it can be seen that the two magnetic field directing elements 30 . 40 even with very little effort in their respective position of use 32 . 42 either directly adjacent to each other ( 2 ) or at a relative distance from each other ( 4a-c ). This is an optimal alignment of the magnetic field 50 regardless of whether the induction coil 20 is designed as a double-D coil or as a solenoid coil or as a circular coil.

5 shows an example based on the magnetic field rectifying element 30 in that the magnetic field directing elements 30 . 40 also by a - in this case illustrated by a double arrow - pivoting movement 80 by means of the adjusting unit 60 between the respective use position 32 . 42 and the respective non-use position 34 . 44 moved and thus can be relocated. In this pivoting movement 80 can the magnetic field directing elements 30 , 40 - as in 5 shown - for example, 90 ° between the position of use 32 . 42 and the non-use position 34 . 44 to be crossed. Although in 5 not shown, so can the magnetic field directing element 30 , 40 in the pivoting movement 80 also by 180 ° between the position of use 32 . 42 and the non-use position 34 . 44 be pivoted.

Overall, the examples show how the magnetic field directing elements according to the invention 30 . 40 to bridge a higher ground clearance of the motor vehicle 10 between the external power transmission device 90 and the induction coil 20 by moving the magnetic field rectifying elements 30 , 40 relative to the induction coil 20 can be used. The magnetic field directing elements 30 . 40 For example, they may be formed as ferrite elements, in particular as ferrite cores. The magnetic field directing elements 30 . 40 serve to shorten an air gap of the magnetic field 50 , which can also be referred to as inductive field. Since the magnetic field directing elements 30, 40 can be formed as respective ferrite elements, they can each represent passive components and be constructed with low complexity. By moving the magnetic field rectifying elements 30 . 40 , for example, along the guide elements 66 is a height compensation between the induction coil 20 and the external power transmission device 90 and aligning and guiding the magnetic field 50 allows. The induction coil 20 Can work together with the inductive pallet 22 firmly on the motor vehicle 10 installed, in the dent 12 on the underbody of the motor vehicle 10 recorded and thus lie in a protected, higher position than the magnetic field directing elements 30 . 40 at least in their position of use 32 . 42 , For inductive energy transmission, a simple, permanently installed and therefore inexpensive, inductive bottom plate of the external energy transmission device 90 be provided.

The two guide elements 66 may generally form a subframe or be part of a subframe in which the magnetic field directing elements 30 . 40 can be stored and movably mounted. The magnetic field directing elements 30 . 40 may preferably be at the respective storage locations 38 . 48 on the guide elements 66 be stored. About the respective servomotors 62 . 64 and the guide elements 66 can the magnetic field directing elements 30 . 40 for example, from the non-use position 34 . 44 in the vehicle vertical direction H down and in the vehicle transverse direction Q and additionally or alternatively in the vehicle longitudinal direction L in the direction of a vehicle center of the motor vehicle 10 to be moved.

By the present invention, the induction coil 20 and the inductive pallet 22 For example, be firmly connected to the underbody of the motor vehicle 10 with this. For charging respective, not shown in this case batteries of the motor vehicle 10 which may include, for example, high voltage batteries are the magnetic field directing elements 30 . 40 along the guide elements 66 from their Fahrbahnferner non-use position 34 . 44 in the road near use position 32 . 42 movable.

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

• WO 2014/174358 A2 [0004]
• DE 2916558 A1 [0005]
• US 3914562 A [0006]
• DE 102015008983 A1 [0007]

Claims (10)

Motor vehicle (10) with at least one induction coil (20) and with at least one magnetic field directing element (30, 40), by means of which, in an inductive energy transfer between an external energy transfer device (90) and the induction coil (20) generated magnetic field (50) relative to at least one induction coil (20) can be aligned and / or guided, characterized in that the at least one magnetic field directing element (30, 40) is designed to be movable relative to the at least one induction coil (20). Motor vehicle (10) according to Claim 1 , characterized in that an adjusting unit (60) is provided, by means of which the magnetic field directing element (30, 40) at least between a use position (32, 42), in which the magnetic field (50) by means of the magnetic field directing element (30, 40) relative to the Induction coil (20) is alignable and / or guidable and a non-use position (34, 44) is movable. Motor vehicle (10) according to Claim 2 , characterized in that the magnetic field directing element (30, 40) at least partially covers the induction coil (20) at least in the non-use position (34, 44) in the vehicle longitudinal direction (L) and / or in the vehicle transverse direction (Q). Motor vehicle (10) according to one of Claims 2 or 3 , characterized in that the adjusting unit (60) has at least one positioning motor (62, 64) coupled to the magnetic field rectifying element (30, 40), by means of which the magnetic field directing element (30, 40) at least between the use position (32, 42) and the Non-use position (34, 44) is movable. Motor vehicle (10) according to one of Claims 2 to 4 , characterized in that the adjusting unit (60) has at least one guide element (66) along which the magnetic field directing element (30, 40) is movable and displaceable between the use position (32, 42) and the non-use position (34, 44). Motor vehicle (10) according to Claim 5 , characterized in that the at least one guide element (66) has at least two element sections (68, 70) which are oriented at least substantially parallel to one another and which are interconnected by a connecting section (72) which is curved at least in some areas. Motor vehicle (10) according to Claim 5 or 6 , characterized in that the at least one guide element (66) is designed as a guide rail. Motor vehicle (10) according to one of Claims 2 to 7 , characterized in that at least two magnetic field directing elements (30, 40) are provided, between which the induction coil (20) in the vehicle transverse direction (Q) and / or in the vehicle longitudinal direction (L) at least in the non-use position (34, 44) of the at least two magnetic field directing elements ( 30, 40) is arranged. Motor vehicle (10) according to Claim 8 , characterized in that the at least two magnetic field directing elements (30, 40) in their use position (32, 42) at least partially cover the induction coil (20) in the vehicle vertical direction (H). Method for inductive energy transmission between an external energy transmission device (90) and an induction coil (20) of a motor vehicle (10) by a magnetic field (50) generated between the external energy transmission device (90) and the induction coil (20), wherein at least one magnetic field directing element (30, 40) of the motor vehicle (10) for aligning and / or guiding the magnetic field (50) relative to the at least one induction coil (20) is moved.

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