Inductive charging device, inductive charging device for a vehicle, energy transfer device, combination of energy transfer device and battery electric vehicle, and method for bringing a battery electric vehicle with an inductive charging device for a vehicle into proximity with an inductive charging device

Abstract

The invention relates to a mobile or stationary inductive charging device (1) for a charging station (2) adapted for charging a battery electric vehicle (100) with electric energy, comprising a transmitting device (12) consisting of at least one electric transmitting coil (20) separate with respect to an energy coil (11) of the inductive charging device (1), which provides an electromagnetic or magnetic field, referred to as a guidance path marking field, on the basis of which a guidance, in particular a guidance path (22) is marked by which the inductive charging device for a vehicle (101) and / or the vehicle (100) can be guided to the energy coil (11) on the basis of the at least one guidance path marking field for the inductive charging device for a vehicle (101). The invention relates in particular to an inductive charging device for a vehicle (101), more in particular to an energy transmission device, more in particular to a combination of an energy transmission device with a battery electric vehicle (100) and more in particular to a method for bringing a battery electric vehicle (100) with an inductive charging device for a vehicle (101) into close proximity to the inductive charging device (1).

Description

[Technical field]

[0001] The present invention relates to an inductive charging device according to the subject matter of claim 1. The invention in particular also relates to an inductive charging device for a vehicle, more in particular an energy transmission device, more in particular a combination of an energy transmission device with a battery electric vehicle, and more in particular a method for bringing a battery electric vehicle, more in particular equipped with an inductive charging device for a vehicle, into the vicinity of the inductive charging device.

[0002] Inductive contactless energy transfer can be used for charging battery electric vehicles, in particular electric vehicles. Here, the energy coil of the inductive charging device, also called the primary coil, is present on the floor of the parking garage. The mobile energy coil on the vehicle side of the inductive charging device for vehicles, also called the secondary coil, is arranged on the vehicle. The advantage here is that no manual plugging in of the charging cable is required when supplying the vehicle with energy. During the charging mode, the two energy coils, which cooperate inductively to transfer energy, must be as precisely opposed as possible, with a lateral deviation within a predefined tolerance range, for example in the SAE J2954 or IEC 61980 standard. The basic principle here is that the more precise the positioning, the higher the coupling between the energy coils and the greater the overall efficiency of the contactless energy transfer. This basically creates a need to position the mobile energy coil on the vehicle side as precisely as possible with respect to the energy coil on the floor side. In known solutions, this requires the installation of multiple sensors in the vehicle, which also requires the reservation of additional construction space therefor, which is undesirable in vehicle development, and furthermore, these known solutions are relatively vulnerable to environmental influences such as various weather conditions and / or pollution.

[0003] It is therefore an object of the present invention to provide an improved embodiment or at least one alternative embodiment of an inductive charging device. In particular, an inductive charging device for a vehicle, more particularly an energy transmission device, more particularly a combination of an energy transmission device with a battery electric vehicle and more particularly a method for bringing a battery electric vehicle with an inductive charging device for a vehicle into close proximity with the inductive charging device should be indicated.

[0004] According to the invention, this problem is solved in particular by the subject matter of the independent claims. Advantageous embodiments are the subject matter of the dependent claims and the description.

[0005] The basic consideration of the present invention is that the inductive charging device comprises a transmitting device consisting of at least one electrical transmitting coil separate with respect to the energy coil of the inductive charging device, which provides an electromagnetic or magnetic field that can be captured and evaluated on the basis of an inductive charging device for a vehicle, in particular an electric vehicle.

[0006] For this purpose, an inductive charging device for a mobile or stationary charging station configured for charging a battery electric vehicle, in particular an electrically powered vehicle, with electric energy is proposed, which comprises a support structure on which, in or adjacent to which an electric energy coil is arranged, which is configured for inductive cooperation with an electric vehicle-side energy coil of a vehicle inductive charging device for a battery electric vehicle, whereby electric energy can be inductively transferred from the inductive charging device to the battery electric vehicle or from the battery electric vehicle to the inductive charging device. The inductive charging device further comprises a transmitting device, which has at least one transmitting coil, hereinafter referred to as a guidance route marking transmitting coil or FPM transmitting coil, separate with respect to the electric energy coil, which transmitting coil is configured or adapted to provide an electromagnetic or magnetic field, hereinafter referred to as a guidance route marking field or FP marking field. Here, guidance, in particular a guided path, is provided on the basis of at least one FP marking field for the vehicle inductive charging device of the vehicle, to which the vehicle inductive charging device of the battery-electric vehicle or the battery-electric vehicle can be supplied with electrical energy coils. In principle, it is also conceivable that the inductive charging device is arranged in the vehicle, whereby the vehicle provides the guided path.

[0007] Based on the proposed inductive charging device, the vehicle inductive charging device of a battery electric vehicle or a battery electric vehicle, in particular an electric vehicle that is approached from a certain distance to the vicinity of the inductive charging device within the framework of a remote positioning method, can be brought directly into the vicinity of the electric energy coil of the inductive charging device. This allows an effective charging mode with a relatively high overall efficiency to be implemented or established, since an optimally positioned vehicle inductive charging device at the electric energy coil allows a relatively loss-free energy transfer between the vehicle inductive charging device and the inductive charging device. In particular, based on the guidance or the guidance route, the vehicle user or the vehicle control device can be provided with means for preparing for a stop signal to be issued and / or for the vehicle to be stopped when the electric energy coil is reached. This allows, overall, a comfortable, reliable and simple approach of the vehicle inductive charging device of a battery electric vehicle or a battery electric vehicle to the inductive charging device.

[0008] The inductive charging device described above can be suitably used in a charging station configured to charge any battery electric device with electric energy, where the battery electric device is merely an optional battery electric vehicle, where an electric energy coil of the inductive charging device can be configured to inductively cooperate with an electrically opposite energy coil of the battery electric device, so that electric energy can be inductively transferred from the inductive charging device to the battery electric device or vice versa.

[0009] Expediently, the inductive charging device can be integrated, for example, into a vehicle, thereby realizing a mobile inductive charging device, which expediently realizes an inductive charging device for a vehicle.

[0010] Furthermore, the inductive charging device can expediently be realized as a stationary inductive charging device, which is arranged, for example, completely or at least partially, in the ground.

[0011] The support structure can in particular form a support structure arranged against or in the ground on which the vehicle rests. The support structure can thus advantageously be realized as an above-floor or below-floor means. Expediently, the support structure can be inserted into a concrete segment or can be asphalt-coated with an asphalt layer and / or can be free of a plastic cover. Furthermore, the support structure can define a height direction and / or form a flat housing whose extension transverse to the height direction is greater than it can be placed in the height direction. Here, the guides or guide paths can be oriented transverse to the height direction and in particular parallel to the ground on which the vehicle rests.

[0012] It is expedient if the at least one FPM transmission coil is arranged on the support structure at a distance from and / or at a distance to the electric energy coil. In particular, the at least one FPM transmission coil may be arranged on the support structure between the electric energy coil and the battery electric vehicle in the direction of travel defined by the battery electric vehicle. This allows for a suitable guidance of the battery electric vehicle relative to the electric energy coil.

[0013] The proposed transmitter device of the inductive charging device is particularly resistant to environmental influences such as weather conditions and / or pollution, since it uses electromagnetic or magnetic fields for positioning.

[0014] Expediently, the height direction is perpendicular to a housing wall of the support structure facing away from the ground on which the vehicle rests, which housing wall expediently has or forms a flat external broad surface, in particular facing away from an inner surface of the housing wall facing the interior space of the support structure, in which case the height direction is perpendicular to said external broad surface.

[0015] Expediently, the electric energy coil extends in a coil plane, with the support structure defining a height direction aligned orthogonally with respect to the coil plane.

[0016] The electric energy coil is suitably arranged inside the support structure, suitably arranged parallel to the upper surface of the support structure, suitably extending in a longitudinal direction perpendicular to the height direction and in a transverse direction perpendicular to the height direction and perpendicular to the longitudinal direction. Here, the vehicle-side energy coil can be arranged at least partially or completely inside a target area of ​​the inductive charging device defined on the basis of the electric energy coil during the charging mode or for the establishment of such. The target area can suitably be realized by a target volume, suitably arranged above the support structure in the height direction and suitably defined by a height extending in the height direction, a width extending in the longitudinal direction perpendicular to the height direction and a depth extending in the transverse direction perpendicular to the height direction and perpendicular to the longitudinal direction.

[0017] It may be expediently assumed that the at least one FPM transmission coil is arranged on the support structure at a distance from the electric energy coil in a longitudinal direction perpendicular to the height direction. Here, it may be assumed that the at least one FPM transmission coil is positioned in an interior space defined or formed by the support structure and / or arranged on an inner surface of a housing wall of the support structure oriented in the interior space. The aforementioned housing wall of the support structure may in particular be realized on the side opposite to the ground against which or in which the inductive charging device is arranged and / or as a design hood that is visible to the user from the outside. This indicates a preferred arrangement of the FPM transmission coil on the support structure, which may, for example, realize a suitable guide or a suitable guide path.

[0018] It may be expediently furthermore provided that the at least one FPM transmitter coil is a flat coil. Furthermore, the at least one FPM transmitter coil may be smaller than the electric energy coil, in particular with respect to its coil area. Furthermore, the at least one FPM transmitter coil may have a circular outer contour, thereby forming a circular FPM transmitter coil. Furthermore, the at least one FPM transmitter coil may have a rectangular outer contour, thereby forming a rectangular coil. It is also expedient if the at least one FPM transmitter coil is an elongated coil extending in the coil main direction or forms an elongated coil, whereby the extension of the elongated coil in the coil main direction is greater than in a coil transverse direction perpendicular to the coil main direction. Here, the coil main direction may furthermore be aligned vertically with respect to the height direction of the support structure. Alternatively, the coil main direction may be perpendicular with respect to a longitudinal direction perpendicular to the height direction of the support structure. This indicates a preferred coil geometry for the at least one FPM transmitter coil.

[0019] Furthermore, it may be expediently assumed that the FP marking field provided or available by the at least one FPM transmission coil is a magnetic long field extending in the main magnetic field direction, in particular an elliptical or cigar-shaped long field in the height direction. Furthermore, the extension of the long field in the main magnetic field direction may be greater than in the transverse magnetic field direction perpendicular to the main magnetic field direction. Furthermore, the main magnetic field direction may be perpendicular to the height direction and the main magnetic field direction may be perpendicular to the longitudinal direction perpendicular to the height direction. This represents a preferred form for the at least one FP marking field. Expediently, the at least one SP marking field may also be realized by a magnetic field extending in the main magnetic field direction, in which case the extension of the long field of the at least one SP marking field in the main magnetic field direction is expediently greater than in the transverse magnetic field direction perpendicular to the main magnetic field direction.

[0020] It may be expediently assumed that the FP marking field provided or available by at least one FPM transmission coil has a marking intensity maximum. In this case, the marking intensity maximum may form at least one global maximum, where the marking intensity maximum is expediently spaced apart from the energy coil in the height direction. Purely theoretically, two identical maxima may be present due to the double projection. A suitable guiding path can already be determined based on the marking intensity maximum of at least one FPM transmission coil. However, if there are more than one FPM transmission coil or more than one FP marking field, it is expedient to form the marking intensity maximum of the FP marking field or the ratio of their amplitudes and to determine the guiding path based on this.

[0021] It may further be expediently assumed that the guide, in particular the guide path, is aligned with and / or leads to the electric energy coil. Expediently, the guide or the guide path extends through the FP marking field provided or available by at least one FPM transmission coil and / or through the marking intensity maximum thereof. This allows the guide path to be determined and provided relatively simply.

[0022] It may be expedient to provide for two, four, six or more FPM transmission coils to be arranged on the support structure at a distance from the energy coil in a longitudinal direction perpendicular to the height direction. Here, the two, four, six or more FPM transmission coils may each be positioned in an interior space defined or formed by the support structure and / or arranged on the inner surface of a housing wall of the support structure oriented in the interior space. The aforementioned housing wall of the support structure may in particular be realized on the side opposite the ground against which or in which the inductive charging device is arranged and / or may be realized as a design hood that is visible to the user from the outside. This shows a preferred arrangement of the FPM transmission coils on the support structure, which, for example, allows a preferred guide path to be realized.

[0023] It may furthermore be expedient to provide that the FPM transmitter coils are arranged one after the other on longitudinal straight lines or longitudinal curves aligned parallel to the longitudinal direction, or that the FPM transmitter coils are arranged one after the other on transverse straight lines aligned parallel to the height direction and the transverse direction perpendicular to the longitudinal direction. It may furthermore be provided that adjacent FPM transmitter coils are spaced apart from one another, or spaced apart from one another in the longitudinal direction, or spaced apart from one another in the transverse direction. This represents an advantageous arrangement for the FPM transmitter coils.

[0024] It may be expediently assumed that the FP marking fields provided by the FPM transmission coils are mutually distinguishable. Expediently, this distinction may be realized on the basis of different transmission frequencies. Advantageously, the transmission coils are operated at frequencies in the range between 5 kHz and 150 kHz. Preferably, the transmission coils are operated at frequencies between 110 kHz and 148.5 kHz, particularly preferably between 120 kHz and 145 kHz. The frequencies belonging to the transmission coils are here preferably located as narrowly as possible apart from one another, so that the overall required frequency spectrum is small. These frequencies are, for example, 5 kHz, 1 kHz or 100 Hz, or 1 Hz or a few Hz from one another. Likewise, a distinction by means of the duty cycle is also possible. On the basis of the above-mentioned encoding of at least one FP marking field, it is advantageously possible to distinguish, for example, from one or more further FP marking fields.

[0025] It may furthermore be assumed that the electric transmission coil configured as an FPM transmission coil is assigned to a ferrite element of the electric energy coil arranged on the electric energy coil. This ferrite element here cooperates with the FPM marking field of the FPM transmission coil, for example, to generate a magnetic flux. As a result, the FPM transmission coil, which in this case is appropriately arranged directly on or above the electric energy coil, can, so to speak, share the ferrite element of the electric energy coil, so that this FPM transmission coil does not have to be equipped with a separate ferrite element. Furthermore, the electric transmission coil configured as an FPM transmission coil may have its own ferrite element. The ferrite element of the FPM transmission coil here cooperates with the FPM marking field of the FPM transmission coil, for example, to generate a magnetic flux. As a result, the FPM transmission coil, which in this case is appropriately arranged in front of the electric energy coil, i.e. at a distance from the electric energy coil, has a ferrite element.

[0026] Furthermore, an electrical transmitting coil configured as an FPM transmitting coil is expedient if it has a flux guiding unit with a flux guiding element, in particular a ferrite plate, for guiding a magnetic or electromagnetic field, in particular a generated FP marking field.

[0027] Expediently, the inductive charging device comprises optional means, in particular a control device or a calculation mechanism, which is configured to identify or be identified based on at least one received FP marking field, in this case captured by the inductive charging device for a vehicle or a battery electric vehicle equipped therewith, in particular an electric vehicle, and transmitted wirelessly to the inductive charging device, or to carry out the approach of the inductive charging device for a vehicle or the vehicle to the inductive charging device.

[0028] According to further basic considerations, it may be expedient to provide an inductive charging device for a battery electric vehicle, in particular an electrically powered vehicle, which comprises an electric vehicle-side energy coil arranged in a vehicle bottom housing, which is configured to inductively cooperate with an electric energy coil of an inductive charging device for a stationary charging station configured to charge a battery electric vehicle, in particular an electrically powered vehicle, with electric energy in order to inductively transfer electric energy from the inductive charging device to the vehicle or from the vehicle to the inductive charging device. The inductive charging device for a vehicle further comprises a receiving device arranged in the vehicle bottom housing and consisting of at least one electric receiving coil, which receives or is configured to receive at least one magnetic field, called a magnetic guidance path marking field or FP marking field, of an electric transmitting coil of a transmitting device of the inductive charging device, called a guidance path marking transmitting coil or FPM transmitting coil. The vehicle inductive charging apparatus optionally comprises means configured to identify or be identified that the vehicle inductive charging apparatus and / or the vehicle is in proximity to the inductive charging apparatus based on the at least one received FP marking field, and / or means for performing such, in particular a control device or a computing mechanism, thereby showing a suitable vehicle inductive charging apparatus for a vehicle, which is expediently capable of cooperating in the described manner with the inductive charging apparatus according to the above description.

[0029] According to further basic considerations, an energy transmission device for a battery electric vehicle, in particular an electrically powered vehicle, may be envisaged, which comprises an inductive charging device configured for stationary application according to the previous description and an inductive charging device for a vehicle configured for mobile application according to the previous paragraph, where the inductive charging device and / or the inductive charging device for the vehicle suitably comprises means configured to identify or be identified that the inductive charging device for the vehicle and / or the vehicle has approached the inductive charging device based on at least one received FP marking and / or means for performing such, in particular a control device or a calculation mechanism. This shows a preferred combination of the inductive charging device according to the above description with the inductive charging device for a vehicle according to the above description, which is for example marketable as an intermediate product.

[0030] According to further basic considerations, it is possible to conceive of a combination of the energy transmission device according to the above description with a battery electric vehicle, in particular an electric vehicle, in which the stationary inductive charging device is fixed with its support structure on the bottom side on the ground on which the vehicle stands or at least partially buried in the ground, and the mobile vehicle inductive charging device is fixed with its vehicle bottom housing to the vehicle structure of the vehicle, in particular the ground. This represents an advantageous combination of the energy transmission device with the vehicle, in which the inductive charging device as well as the vehicle inductive charging device are fixed in a suitable manner. This has the advantage, in particular, that the components of the inductive charging device are at least partially buried in the bottom / ground, which results in that these components do not require space on the surface and are not exposed to the risk of vandalism. The stationary inductive charging device can also be placed on the bottom / ground.

[0031] According to further basic considerations, it may be expedient to envisage a method for bringing an inductive charging apparatus for a vehicle according to the above description, or a battery electric vehicle, in particular an electrically powered vehicle, equipped with such an inductive charging apparatus, into the vicinity of an inductive charging apparatus, in which an FP marking field of at least one FPM transmitting coil of a transmitting device of the inductive charging apparatus is received by means of at least one electrical receiving coil of a receiving device of the inductive charging apparatus for a vehicle, and then, by means of means, in particular a control device or a computing mechanism, integrated in the inductive charging apparatus and / or the inductive charging apparatus for a vehicle, it is identified or determined on the basis of the at least one received FP marking field that the inductive charging apparatus for a vehicle and / or the vehicle has approached the inductive charging apparatus. This represents an advantageous way in which an inductive charging apparatus for a vehicle, or a vehicle equipped with such an inductive charging apparatus, can approach the inductive charging apparatus at least from the vicinity area of ​​the inductive charging apparatus.

[0032] In summary, it continues to be the case that the invention preferably relates to an inductive charging device for a charging station configured to charge a battery electric vehicle with electric energy, comprising a support structure defining a height direction and a transmitting device consisting of a separate electrical transmitting coil with respect to the energy coil of the inductive charging device, where at least one first electrical transmitting coil provides a magnetic field referred to as a target position marking field or SP marking field, where based on the at least one SP marking field for the vehicle inductive device of the vehicle a preferred target position target area is marked or can be marked, and where at least one second electrical transmitting coil provides a magnetic field referred to in the following as a guidance path marking field or FP marking field, where based on the at least one FP marking field for the vehicle inductive device a guidance path leading to the target position target area is marked or provided, where based on said guidance path the inductive charging device for the vehicle and / or the vehicle can be guided to the at least one SP marking field that marks or defines the target position target area. The present invention relates in particular to an inductive charging device for a vehicle, more particularly to an energy transfer device, more particularly to a combination of an energy transfer device with a battery electric vehicle, and more particularly to a method for bringing a battery electric vehicle equipped with an inductive charging device for a vehicle into proximity with the inductive charging device.

[0033] Further important features and advantages of the invention emerge from the dependent claims, the drawings and the associated description based on the drawings.

[0034] It is obvious that the features mentioned above and those to be further described below can be used not only in the respective described combinations, but also in other combinations or alone, without departing from the scope of the invention.

[0035] Preferred embodiments of the present invention are illustrated in the drawings and will be explained in more detail in the following description, where like reference numbers refer to identical or similar or functionally identical components. [Brief description of the drawings]

[0036] [Figure 1] 1 is a highly simplified schematic plan view of an inductive charging device according to a preferred embodiment; FIG. [Diagram 2] 1 is a highly simplified schematic plan view of an inductive charging device according to a preferred embodiment; FIG. [Diagram 3] 1 is a highly simplified schematic plan view of an inductive charging device according to a preferred embodiment; FIG. [Figure 4] 1 is a highly simplified schematic plan view of an inductive charging device according to a preferred embodiment; FIG. [Diagram 5] 1 is a highly simplified schematic plan view of an inductive charging device according to a preferred embodiment; FIG. [Figure 6] 1 is a highly simplified schematic plan view of an inductive charging device according to a preferred embodiment; FIG. [Figure 7] FIG. 7 is a greatly simplified schematic side view of the inductive charging device of FIG. 6. [Figure 8] FIG. 2 is a highly simplified schematic plan view of an inductive charging device according to a further preferred embodiment; [Figure 9] FIG. 9 is a greatly simplified schematic side view of the inductive charging device of FIG. 8. [Figure 10] FIG. 2 is a further, greatly simplified schematic plan view of an inductive charging device according to a preferred embodiment;

[0037] 1-10, there is shown a preferred embodiment of an inductive charging device, generally designated 1. For simplicity, functionally identical or functionally similar elements in the embodiments are designated with the same reference numerals. A new description of the functionally identical or functionally similar components will not be provided to avoid repetition.

[0038] 1 makes it possible to recognize a preferred embodiment of an inductive charging device 1, which is suitable for or integrated into a stationary charging station 2 arranged to charge with electric energy a battery electric vehicle 100 (which is for example an electric vehicle) which is only symbolically shown in FIG. 7. The inductive charging device 1 exemplarily has a substantially rectangular parallelepiped shaped support structure 3 which defines a height direction 8, which in this embodiment is indicated by a plus. Exemplarily this height direction 8 stands perpendicular to a flat housing wall 5 of the support structure 3 lying in the drawing plane, which housing wall 5 is oriented parallel to and opposite to a ground 200 on which said vehicle 100 rests. The housing wall 5 expediently has or forms a flat external broad surface 29 facing the vehicle 100, in particular on the side opposite the inner surface 6 of the housing wall 5 facing the interior space 4 of the support structure 3, in which case the height direction 8 is preferably perpendicular to the external broad surface 29 (see in particular Figures 6 to 9).

[0039] Arranged inside the support structure 3, i.e. in the internal space 4 of the support structure 3, is an electric energy coil 11, only symbolically shown in Figs. 1 and 6 to 9, which is arranged for bidirectional inductive cooperation with an electric vehicle-side energy coil 103 of an inductive vehicle charging device 101 of a vehicle 100 arranged in a vehicle bottom housing 102 (see again in particular Figs. 6 to 9). The electric energy coil 11 defines a coil plane 21. The above-mentioned height direction 8 stands perpendicular to the coil plane 21. This coil plane 21 usually lies in a horizontal plane extending through the longitudinal direction 9 and the lateral direction 10. Whereas in Figs. 1 to 6 as well as Figs. 8 and 10 the coil plane 21 lies at least substantially in or parallel to the plate plane, according to Figs. 7 and 9 the coil plane 21 extends at least substantially perpendicular to the plate plane. This allows electrical energy to be inductively transferred from the inductive charging device 1 to the vehicle 100 or from the vehicle 100 to the inductive charging device 1 within the framework of the charging mode 18. On the basis of the electrical energy coils, in this example for the vehicle inductive charging device 101 of the vehicle 100, a virtual target area 16 or a virtual target volume is marked or provided, in which the vehicle inductive charging device 101 is positioned or can be positioned with respect to the inductive charging device 1 such that the energy coil 11 and the vehicle-side energy coil 103 are spaced apart opposite each other in the height direction 8 and overlap or are folded in a completely coincident manner laterally with respect to the height direction 8, in particular for or in order to establish an energy-efficient charging mode 18. The inductive charging device 1 further comprises a transmitting device 12 having an electrical transmitting coil 20, hereinafter referred to as a guidance path marking transmitting coil or FPM transmitting coil, separate with respect to the at least one energy coil 11, which provides or is configured to provide an electromagnetic field, hereinafter referred to as a guidance path marking field or FP marking field.Based on the at least one FP marking field, a guide path 22 leading to the target area 16 and oriented transversely to the height direction 8 can be marked or provided for the vehicle inductive charging device 101 of the vehicle 100, based on which the vehicle inductive charging device 101 or the vehicle 100 can be guided or is guided to the target area 16. This allows, in particular, easy access to the inductive charging device 1. Furthermore, a soft and so-called "smooth" transition to or from a remote positioning method can be realized. The at least one FPM transmission coil 20 is fixed to the support structure 3 here spaced apart from the electric energy coil 11 in a longitudinal direction 9 standing perpendicular to the height direction 8, whereby the at least one FPM transmission coil 20 is positioned in an interior space 4 defined by the support structure 3 and is arranged exemplarily on an inner surface 6 of a housing wall 5 of the support structure 3 oriented towards the interior space 4 (see also Figs. 7 and 9). The electrical transmitting coil 20 configured as an FPM transmitting coil may also have a flux guiding unit with a flux guiding element, in particular a ferrite plate, for guiding the magnetic or electromagnetic field, in particular the generated FP marking field.

[0040] In figures 1 to 4, by way of example, three FPM transmission coils 20, in figure 5 two FPM transmission coils 20, in figures 6 and 7 six FPM transmission coils 20, in figures 8 and 9 five FPM transmission coils 20, in figure 10 four FPM transmission coils 20 as well as two further optional FPM transmission coils 20 are arranged on the support structure 3, whose FP marking fields are arranged stepwise one after the other in the longitudinal direction 9. By way of example only, the FPM transmission coils 20 according to figures 1, 4 to 9 are circular FPM transmission coils with a circular outer contour. At least one FPM transmission coil can also have a rectangular outer contour and thus form a rectangular coil.

[0041] 2 and 3 form a so-called electromagnetic elongated coil 24 that extends in a coil main direction 23. The extension of each elongated coil 24 is greater in the coil main direction 23 than in a coil transverse direction 25 that stands perpendicular to the coil main direction 23. Expediently, the coil main direction 23 or the elongated coil 24 is orthogonal to the longitudinal direction 9. The guide path 22, shown only in FIG. 1, leads to the target area 16 or to the geometric center of the target area 16 and advantageously through the intensity maximum of the electric energy coil 11.

[0042] According to figures 6 to 10, the at least one energy coil 11 has a rectangular outer contour and forms a rectangular coil, which is indicated by the broken lines in figure 10 and can thus also be transferred to figure 8. To the left of the energy coil 11 in figures 6 to 9, an electronics unit 30 is arranged, inter alia, for controlling the inductive charging device 1.

[0043] 1, it can be seen that the FPM transmission coils 20 are arranged on straight longitudinal lines 27 aligned parallel to the longitudinal direction 9. Furthermore, with reference to Fig. 5, it can be seen that the FPM transmission coils 20 are arranged one after the other on straight lateral lines 28 aligned perpendicular to the longitudinal direction 9 and parallel to the lateral direction 10. Adjacent FPM transmission coils 20 are spaced apart from each other in the longitudinal direction 9 or the lateral direction 10 so as to be clearly identifiable.

Claims

1. An inductive charging device (1) for a battery electric vehicle (100), in particular a charging station (2) adapted to charge an electric vehicle with electric energy, comprising: a support structure (3) on which, in or adjacent to which an electric energy coil (11) is arranged, the electric energy coil (11) being configured to inductively cooperate with an electric vehicle-side energy coil (103) of a vehicle inductive charging device (101) of the vehicle (100), whereby electric energy can be inductively transferred from the inductive charging device (1) to the vehicle (100) or from the vehicle (100) to the inductive charging device (1); a transmitting device (12) having at least one electrical transmitting coil (20) separate with respect to said energy coil (11), in particular a guidance route marking transmitting coil or a FPM transmitting coil, said electrical transmitting coil (20) providing or configured to provide an electromagnetic field, in particular a guidance route marking field or a FP marking field, or a magnetic field; Equipped with The inductive charging device (1) is provided with a guide portion, in particular a guide path (22), capable of guiding the vehicle inductive charging device (101) of the vehicle (100) to the electric energy coil (11) based on at least one FP marking field for the vehicle inductive charging device (101) of the vehicle (100).

2. 2. The inductive charging device (1) according to claim 1, wherein the electrical transmitting coil (20) configured as at least one FPM transmitting coil is arranged away from the electrical energy coil (11) or at a distance relative to the electrical energy coil (11).

3. The electrical energy coil (11) unfolds a coil plane (21); the support structure (3) defines a height direction (8) aligned orthogonally with respect to the coil plane (21); the electrical transmission coil (20) configured as at least one FPM transmission coil is arranged on the support structure (3) at a distance from the energy coil (11) in a longitudinal direction (9) perpendicular to the height direction (8); and / or 3. The inductive charging device (1) according to claim 1 or 2, wherein the electrical transmitting coil (20) configured as at least one FPM transmitting coil is positioned within an internal space (4) defined or formed by the support structure (3) and / or is arranged on an inner surface (6) of a housing wall (5) of the support structure (3) oriented into the internal space (4).

4. The electrical transmitter coil (20) configured as at least one FPM transmitter coil comprises: the at least one FPM transmit coil is a flat coil; the at least one FPM transmission coil is smaller than the electrical energy coil (11); the at least one FPM transmit coil has a circular outer contour forming a circular FPM transmit coil. the at least one FPM transmit coil has a rectangular outer contour forming a rectangular coil. The at least one FPM transmission coil is an elongated coil (24) extending in a main coil direction (23). the expansion of the elongated coil (24) in the main coil direction (23) is greater than in a transverse coil direction (25) perpendicular to the main coil direction (23); the main coil direction (23) is perpendicular to a height direction (8) of the support structure (3), or the main coil direction (23) is perpendicular to a longitudinal direction (9) perpendicular to the height direction (8) of the support structure (3); 4. An inductive charging device (1) according to any one of claims 1 to 3, characterized in that it has at least one of the following features.

5. the FP marking field provided or provideable by said electrical transmission coil (20) configured as at least one FPM transmission coil has a marking intensity maximum; and / or 5. The inductive charging device (1) according to claim 1, wherein the marking intensity maxima form at least one global maximum.

6. 6. The inductive charging device (1) according to claim 1, wherein the guiding portion, in particular the guiding path (22), is oriented towards and / or leads to the electric energy coil (11).

7. The support structure (3) defines a height direction (8), the transmitting device (12) has an electric transmitting coil (20) configured with two, four, six or more than FPM transmitting coils, the electric transmitting coil (20) extending in a longitudinal direction (9) perpendicular to the height direction (8), in particular parallel to the ground (200) on which the battery electric vehicle (100) rests, and arranged on the support structure (3) at a distance from the energy coil (11); and / or The inductive charging device (1) according to any one of claims 1 to 6, wherein the electrical transmitting coils (20), configured with two, four, six or more than FPM transmitting coils, are each positioned within an internal space (4) defined or formed by the support structure (3) and / or arranged on an inner surface (6) of a housing wall (5) of the support structure (3) oriented into the internal space (4).

8. The electrical transmission coils (20) configured as FPM transmission coils are arranged one behind the other on longitudinal straight lines (27) or longitudinal curves aligned parallel to the longitudinal direction (9), or The electrical transmission coils (20) configured as FPM transmission coils are arranged one behind the other on a lateral straight line (28) aligned parallel to a lateral direction (10) perpendicular to the height direction (8) and to the longitudinal direction (9); and / or 8. The inductive charging device (1) according to claim 7, wherein adjacent electrical transmitting coils (20) configured as FPM transmitting coils are spaced apart from one another, or are spaced apart from one another in the longitudinal direction (9), or are spaced apart from one another in the lateral direction (10).

9. the FP marking fields provided by said electrical transmitter coil (20) configured as an FPM transmitter coil are mutually distinguishable; and / or the FP marking field provided or provideable by said electrical transmission coil (20) configured as at least one FPM transmission coil has an individual coding; and / or Based on the individual encoding of the FP marking field of the electrical transmitter coil (20) configured as an FPM transmitter coil, said FPM transmitter coil is distinguishable with respect to the FP marking fields of further FPM transmitter coils of the transmitter device (12); and / or 9. The inductive charging device (1) according to claim 1, wherein the individual encoding of the FP marking field provided or capable of being provided by the electrical transmitting coil (20) configured as at least one FPM transmitting coil is realized on the basis of marking intensity maxima of the FP marking field.

10. The electrical transmission coil (20) configured as an FPM transmission coil is assigned to a ferrite element of the electrical energy coil (11) arranged in the electrical energy coil (11) and / or the electrical transmission coil (20) configured as an FPM transmission coil has a ferrite element, or 10. The inductive charging device (1) according to claim 1, wherein the electrical transmitting coil (20) configured as an FPM transmitting coil has a flux guiding unit having a flux guiding element, in particular a ferrite plate, for guiding a magnetic or electromagnetic field, in particular a generated FP marking field.

11. A vehicle inductive charging device (101) for a battery electric vehicle (100), in particular for an electric vehicle, comprising: an electric vehicle-side energy coil (103) arranged in a vehicle bottom housing (102), the vehicle-side energy coil (103) being configured to inductively cooperate with an electric energy coil (11) of an inductive charging device (1) for a battery electric vehicle (100), in particular a stationary charging station (2) configured for charging an electric vehicle with electric energy, in order to inductively transfer electric energy from the inductive charging device (1) to the vehicle (100) or from the vehicle (100) to the inductive charging device (100); a receiving device (104) arranged in the vehicle bottom housing (102) and consisting of at least one electrical receiving coil (105), the receiving coil (105) receiving or configured to receive an electromagnetic or magnetic field, referred to as a guidance route marking field or FP marking field, of an electrical transmitting coil (20) of a transmitting device (12) of the inductive charging device (1), configured as a guidance route marking transmitting coil or FPM transmitting coil, An inductive charging device for a vehicle (101) comprising optional means, in particular a control device or a calculation mechanism, said optional means being configured to identify or be identified as having come into proximity of said inductive charging device for a vehicle (101) and / or said vehicle (100) to said inductive charging device (1) based on at least one received FP marking field.

12. 1. An energy transmission device, comprising: An inductive charging device (1) according to any one of claims 1 to 10, configured for stationary or mobile use, and an inductive charging device (101) for a vehicle according to claim 11, configured for stationary or mobile use, and / or The inductive charging device (1) and / or the vehicle inductive charging device (101) includes means, in particular a control device or a calculation mechanism, configured to identify or be identified that the vehicle inductive charging device (101) and / or the vehicle (100) has approached the inductive charging device (1) based on at least one received FP marking field.

13. A combination of an energy transmission device according to claim 12 with a battery electric vehicle (100), in particular an electric vehicle, a stationary inductive charging device (1) is fixed with its support structure (3) on the bottom side of a ground (200) on which the battery electric vehicle (100) is placed or is fixed at least partially buried in the ground (200), A combination in which a mobile vehicle inductive charging device (101) is fixed to the vehicle structure of the battery electric vehicle (100) by means of its bottom vehicle housing (102).

14. A method for bringing a vehicle inductive charging device (101) according to claim 11 or a battery electric vehicle (100), in particular an electrically powered vehicle, equipped with a vehicle inductive charging device (101) according to claim 11 into close proximity with an inductive charging device (1) according to any one of claims 1 to 10, comprising: receiving an FP marking field of an electrical transmitting coil (20) configured as at least one FPM transmitting coil of a transmitting device (12) of the inductive charging device (1), using at least one electrical receiving coil (105) of a receiving device (104) of the inductive charging device for a vehicle (101); A method in which, using means, in particular a control device or a computing mechanism, integrated in the inductive charging device (1) and / or the vehicle inductive charging device (101), the proximity of the vehicle inductive charging device (101) and / or the vehicle (100) to the inductive charging device (1) is identified or determined based on at least one received FP marking field.

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