DE102018209882A1 - Charging tunnel for inductive charging of a vehicle - Google Patents

Abstract

A charging tunnel (200) for inductively charging an electrical energy store (103) of a vehicle (100) traveling through the charging tunnel (200) is described. The loading tunnel (200) comprises a tunnel floor (202) which can be driven on by vehicles (100) and a tunnel ceiling (203) which protects the tunnel floor (202) at least in regions from precipitation. The tunnel floor (202) and the tunnel ceiling (203) form a cross-sectional area perpendicular to a course of the loading tunnel (200), which enables a vehicle (100) to drive through the loading tunnel (200) on the tunnel floor (202). In addition, the charging tunnel (200) comprises a row of primary coils (111, 211) arranged along the course of the charging tunnel (200), the primary coils (111, 211) being set up to generate a magnetic charging field that is designed in a secondary coil (121, 221) of a vehicle (100) traveling through the charging tunnel (200) to induce a charging current for charging an electrical energy store (103) of the vehicle (100).

Description

The invention relates to a device for inductively charging a vehicle, in particular for inductively charging a road motor vehicle.

Vehicles with an electric drive typically have an electrical energy store (for example an electrochemical battery) in which electrical energy for operating an electric drive motor of the vehicle can be stored. The vehicle's energy storage device can be charged with electrical energy from a power supply network. For this purpose, the energy store is coupled to the power supply network in order to transfer the electrical energy from the power supply network into the energy store of the vehicle. The coupling can be wired (via a charging cable) and / or wireless (using an inductive coupling between a charging station and the vehicle).

Charging an electrical energy store of a vehicle typically takes a relatively long period of time, which means that vehicles with an electric drive are usually not used today for longer journeys that require the energy store to be recharged in the meantime.

The present document deals with the technical problem of providing a charging device for a vehicle, in particular for a road vehicle, which enables time-efficient charging of an electrical energy store of the vehicle, in particular in order to be able to use the vehicle for relatively long driving distances.

The task is solved by the independent claims. Advantageous embodiments include described in the dependent claims. It is pointed out that additional features of a claim dependent on an independent claim without the features of the independent claim or only in combination with a subset of the features of the independent claim can form a separate invention that is independent of the combination of all features of the independent claim can be made the subject of an independent claim, a divisional application or a late application. This applies in the same way to the technical teachings described in the description, which can form an invention that is independent of the features of the independent claims.

According to one aspect, a charging tunnel for inductively charging an electrical energy store of a vehicle traveling through the charging tunnel is described. The loading tunnel comprises a tunnel floor that can be driven on by vehicles (in particular road vehicles). In addition, the loading tunnel comprises a tunnel ceiling that protects the tunnel floor from precipitation at least in regions (or preferably over the entire distance of the loading tunnel). In particular, the tunnel ceiling can form an enclosure for the tunnel floor. The tunnel floor and the tunnel ceiling form a cross-sectional area perpendicular to the course of the loading tunnel, which enables a vehicle to drive through the loading tunnel on the tunnel floor.

Furthermore, the charging tunnel comprises a row of primary coils arranged along the course of the charging tunnel, the primary coils each being set up to generate a magnetic charging field. The magnetic charging field can be designed to induce a charging current for charging an electrical energy store of the vehicle in a secondary coil of a vehicle traveling through the charging tunnel. For this purpose, the magnetic charging field can be an alternating field (e.g. with a frequency between 80kHz and 90kHz, in particular with a frequency at approx. 85kHz).

The series of primary coils can extend from the entrance of the loading tunnel to the exit of the loading tunnel. The primary coils can be arranged and / or designed such that a magnetic charging field can be provided at any location along the course of the charging tunnel, with which a certain minimum charging power for charging an electrical energy store of a vehicle can be achieved (for example a minimum charging power of 5 kW, 10kW, 20kW or more). The loading tunnel can have a length of 500 meters, 1 km, 2 km or more.

The provision of a charging tunnel enables a user to charge his vehicle's energy store while driving through the charging tunnel. In this way, time-efficient charging can be achieved (while driving). Furthermore, due to the shielding of weather influences within the charging tunnel, a consistently high charging capacity can be reliably provided.

The loading tunnel can comprise a series of ceiling primary coils which are arranged and / or fastened on and / or in the tunnel ceiling along the course of the loading tunnel. By providing ceiling primary coils, inductive charging can take place via a secondary coil on the top or on the roof of a vehicle. The ceiling primary coils are particularly exposed to soiling and / or weather conditions, so that the ceiling Primary coils can be provided in a particularly reliable manner, a consistently high charging power.

As an alternative or in addition, the loading tunnel can comprise a series of ground primary coils which are arranged and / or fastened on and / or in the tunnel floor along the course of the loading tunnel. By providing ground primary coils, efficient inductive charging can take place via the underbody clearance of a vehicle.

The combined provision of floor primary coils and ceiling primary coils can increase the charging power for charging the electrical energy store of a vehicle and thus reduce the charging time. In this way, the length of a loading tunnel can be reduced and the permissible driving speed of vehicles within the loading tunnel can be increased.

The tunnel floor can be designed to be placed on a roadway that can be driven on by vehicles. The loading tunnel may have a ramp at the entrance and / or at the exit of the loading tunnel, which enables a vehicle to move (as jerk-free as possible) at the entrance from the carriageway onto the tunnel floor and / or at the exit from the tunnel floor onto the Driving lane. The provision of an additional tunnel floor (in addition to an underlying lane) enables an efficient installation of a number of (floor) primary coils within the loading tunnel (especially within the tunnel floor).

The loading tunnel can be designed, including the tunnel ceiling and / or including the tunnel floor, to be transported to different locations on a road network and / to be installed at different locations in a road network. A “mobile” loading tunnel can thus be provided, which can be set up in a cost-efficient manner and placed at suitable points in a road network.

The charging tunnel can be set up to determine position information in relation to at least one secondary coil of a vehicle traveling through the charging tunnel. The position information can indicate whether the vehicle has a roof secondary coil arranged on the top (in particular on the roof) of the vehicle. Furthermore, the position information can indicate whether the vehicle has a floor secondary coil arranged on the floor of the vehicle. To determine the position information, e.g. Image data from an image camera of the charging tunnel can be evaluated. Alternatively or additionally, the position information can be determined on the basis of a “vehicle-to-infrastructure” communication message from a vehicle to the loading tunnel.

The loading tunnel can have a control unit that is set up to evaluate sensor data (e.g. image data) and / or vehicle-to-infrastructure communication messages in order to determine the position information. Furthermore, the control unit can be set up to operate the row of ceiling primary coils and / or the row of floor primary coils as a function of the position information. For example, the row of ceiling primary coils can (if applicable only) be operated if the position information indicates that the vehicle (possibly only) has a roof secondary coil. Alternatively or additionally, the row of ground primary coils can (if necessary only) be operated if the position information indicates that the vehicle (possibly only) has a ground secondary coil.

The one or more rows of primary coils can be operated to generate a magnetic charging field that is configured to induce a charging current in the one or more secondary coils of the vehicle traveling through the charging tunnel. This enables a reliable inductive charging process with high charging powers.

The tunnel ceiling can have a height that exceeds the height of a certain type of vehicle, in particular the type of passenger car or the type of truck, by 20%, 10% or less. In other words, the tunnel ceiling can be arranged relatively close to the top of the vehicles to be loaded within the loading tunnel. Relatively high charging capacities can thus be made possible in an efficient manner via the primary coils on the tunnel ceiling.

The loading tunnel (in particular the control unit of the loading tunnel) can be set up to determine that a vehicle has or will drive at the entrance of the loading tunnel into the loading tunnel. For this purpose e.g. Image data from an image camera at the entrance to the loading tunnel can be evaluated.

Furthermore, the charging tunnel (in particular the control unit of the charging tunnel) can be set up, in response to the fact that a vehicle has been detected at the entrance of the charging tunnel, the primary coils of the row of primary coils sequentially (gradually) starting at an end facing the entrance of the charging tunnel the series of primary coils to generate a magnetic charging field that moves from the entrance of the loading tunnel along the course of the loading tunnel to the exit of the loading tunnel. The driving speed of the vehicle can be determined and are taken into account in order to cause the magnetic charging field to move through the charging tunnel in synchronization with the vehicle along the course of the charging tunnel.

The generation of a magnetic charging field can thus preferably be limited to the current position of the one or more secondary coils of a vehicle. In places where no vehicle is arranged, a magnetic charging field is preferably not generated. This enables a particularly energy-efficient charging of the energy stores of vehicles.

The charging tunnel can comprise one or more solar cells (in particular solar modules), which are arranged on the outside of the tunnel ceiling (the outside can face the sky). The tunnel ceiling can have a curved shape in order to provide the largest possible area for the arrangement of solar cells or solar modules. The one or more solar cells or solar modules can be set up to generate electrical energy in response to solar radiation. The charging tunnel can be set up to generate the magnetic charging field based on electrical energy generated by the one or more solar cells. The charging tunnel can optionally have an electrical energy store in order to temporarily store the electrical energy generated by the one or more solar cells. This enables particularly energy-efficient and climate-friendly charging of vehicles.

The loading tunnel can comprise a number of identical tunnel segments or can be composed of a number of identical tunnel segments. A tunnel segment can comprise one or more first coupling elements at a first end and one or more second coupling elements at a second end. One or more first coupling elements can be complementary to the one or more second coupling elements. In particular, the coupling elements can be such that two directly successive tunnel segments can be (firmly) connected to one another via the one or more first coupling elements of a first tunnel segment and the one or more second coupling elements of a second tunnel segment. By building a loading tunnel with identical tunnel segments, loading tunnels can be provided in a cost-efficient and flexible manner.

According to a further aspect, a vehicle, in particular a road motor vehicle, for example a passenger car or a truck or a bus, is described. The vehicle can be designed to be inductively charged in the loading tunnel described in this document.

The vehicle includes an electric drive motor that is configured to drive one or more wheels of the vehicle. In addition, the vehicle includes an electrical energy storage device (e.g. a lithium-ion-based battery) that is set up to store electrical energy for the operation of the drive motor. Furthermore, the vehicle comprises a secondary coil, which is designed to provide a charging current for charging the energy store on the basis of a magnetic charging field.

The secondary coil can be arranged on an upper side of the vehicle facing away from the one or more wheels of the vehicle (in particular on a roof of the vehicle). By providing a secondary coil arranged in this way (if necessary in addition to inductive charging via the underbody of the vehicle), inductive charging can take place from the top of the vehicle (in particular within a charging tunnel). Thus, high charging capacities can be made possible in a reliable manner.

The vehicle may include an extension device that is configured to change the height of the secondary coil relative to the one or more wheels of the vehicle. In particular, the extension device can be designed to move the secondary coil of the vehicle upwards (away from the vehicle), e.g. towards the tunnel ceiling of a loading tunnel. The loading capacity can be increased further by providing an extension device (e.g. an extension device based on the scissors principle).

The vehicle may include a shielding device that is configured to shield a magnetic charging field acting on the secondary coil from an occupant cabin of the vehicle. The shielding device can e.g. be arranged on the roof of the vehicle. In this way, safety for a user of the vehicle can be increased.

The secondary coil of the vehicle can be installed in the underbody of the vehicle and / or in the roof of the vehicle. Alternatively or in addition, the secondary coil can be integrated in the structures of one or more vehicle components, e.g. on the underbody in a push field of the vehicle and / or in the roof of the vehicle.

It should be noted that the methods, devices and systems described in this document are used both alone and in combination with other methods, devices and systems described in this document can. Furthermore, any aspect of the methods, devices and systems described in this document can be combined with one another in a variety of ways. In particular, the features of the claims can be combined with one another in a variety of ways.

• 1 ein beispielhaftes induktives Ladesystem;
• 2a einen beispielhaften Ladetunnel entlang der Fahrtrichtung eines Fahrzeugs durch den Ladetunnel;
• 2b einen beispielhaften Ladetunnel aus einer Vielzahl von Tunnelsegmenten;
• 3a ein beispielhaftes Fahrzeug mit einer Ausfahrvorrichtung; und
• 3b einen beispielhaften Querschnitt eines Ladetunnels.

The invention is described in more detail below on the basis of exemplary embodiments. Show

• 1 an exemplary inductive charging system;
• 2a an exemplary loading tunnel along the direction of travel of a vehicle through the loading tunnel;
• 2 B an exemplary loading tunnel from a plurality of tunnel segments;
• 3a an exemplary vehicle with an extension device; and
• 3b an exemplary cross section of a loading tunnel.

As stated at the beginning, the present document is concerned with the time-efficient charging of the energy store of a vehicle, in particular to enable the vehicle to be used for relatively long journeys (ie for journeys which are longer than the range of the vehicle limited by the storage capacity of the energy store) ).

One approach to the automatic, wireless, inductive charging of the energy store of the vehicle is that electrical energy is transmitted from the floor to the underbody of the vehicle via magnetic induction via the underbody clearance to the energy store of the vehicle.

This is exemplified in 1 shown. In particular shows 1 a vehicle 100 with an energy storage 103 for electrical energy (e.g. with a rechargeable battery 103 ). The vehicle 100 includes a secondary coil 121 in the vehicle underbody, with the secondary coil 121 via a rectifier with the memory 103 connected to electrical energy. The rectifier is part of a secondary electronics 123 , The secondary coil 121 and the secondary electronics 123 are typically via at least one (AC) line 122 electrically connected to each other and together form a so-called "Wireless Power Transfer" (WPT) vehicle unit 120 or secondary unit 120 ,

The secondary coil 121 the secondary unit 120 can over a primary coil 111 be positioned with the primary coil 111 for example on the floor of a garage. The primary coil 111 is typically part of a so-called WPT floor unit 110 or primary unit 110 , The primary coil 111 is via an (AC) line 112 with primary electronics 113 and further connected to a power supply. The primary electronics 113 may include a radio frequency generator or inverter that has an AC (Alternating Current) current in the primary coil 111 the WPT floor unit 110 generated, whereby a magnetic field (in particular a magnetic charging field) is induced. The magnetic charging field can have a frequency from a predefined charging field frequency range. The charging field frequency of the magnetic charging field can be in the range of 80-90 kHz (in particular at 85 kHz).

With sufficient magnetic coupling between the primary coil 111 the primary unit 110 and secondary coil 121 the secondary unit 120 (ie with a sufficiently high degree of coupling) via the underbody clearance 130 the magnetic field creates a corresponding voltage and thus a current in the secondary coil 121 induced. The induced current in the secondary coil 121 the secondary unit 120 is by the rectifier of the secondary electronics 123 rectified and in energy storage 103 saved. This means that electrical energy can be transferred wirelessly from a power supply to an energy store 103 of the vehicle 100 be transmitted. The charging process can be done in the vehicle 100 through a charging control unit of the secondary electronics 123 to be controlled. The charging control device can be set up for this purpose, for example wirelessly (for example via WLAN), with the primary unit 110 to communicate.

By installing a series of primary coils 111 along one of a vehicle 100 drivable lane can also be while driving a vehicle 100 an inductive charging of the energy store 103 be effected. For this purpose, primary coils can be placed at a certain distance 111 in the of a vehicle 100 traffic lane are arranged. Through the primary coils 111 a magnetic charging field can be generated in each case, which is set up in the secondary coil 121 of the vehicle 100 a charging current for charging the energy store 103 to induce. The vehicle drives while driving 100 over different sections of the road and over different primary coils 111 , each a magnetic charging field for charging the energy storage 103 produce. This can be done in a time-efficient manner while driving a vehicle 100 charging the energy storage 103 be effected.

The installation of primary coils 111 in an existing lane is associated with relatively high costs. Furthermore, a roadway is typically constantly exposed to environmental influences (such as rain, snow, sun, etc.), which has an adverse effect on those built into the roadway primary coil 111 can lead. In addition, the charging performance can be impaired by dirt on the road and / or precipitation (such as rain or snow).

2a shows a (mobile) loading tunnel 200 as a charging device for inductive charging of the electrical energy store 103 of a vehicle 100 , The loading tunnel 200 includes a tunnel floor 202 who is trained by vehicles 100 to be driven on. The loading tunnel also includes 200 a tunnel ceiling 203 that is trained the tunnel floor 202 to cover or cover the tunnel floor 202 to protect against environmental influences (such as solar radiation and / or precipitation).

2a shows a loading tunnel 200 in the longitudinal direction or along the course of the loading tunnel 200 , ie along the direction of travel of a vehicle 100 through the loading tunnel 200 (represented by an arrow). 3b shows a cross section or a cross-sectional area of a loading tunnel 200 (perpendicular to the direction of travel of a vehicle 100 ). Out 3b can be seen that the tunnel floor 202 and the tunnel ceiling 203 can be designed to (particularly completely) enclose a cavity through which vehicles 100 can drive.

The loading tunnel 200 can be formed on an existing roadway 205 (with one or more lanes). The tunnel floor 202 on the road 205 be placed. The loading tunnel 200 can at the entrance to the loading tunnel 200 and / or at the exit from the loading tunnel 200 a ramp 201 have about the vehicles 100 in a comfortable and / or steady way from the road 205 on the tunnel floor 202 or from the tunnel floor 202 on the road 205 can drive.

The tunnel floor 202 can travel along the direction of travel of the vehicles 100 or along the course of the loading tunnel 200 a sequence or series of ground primary coils 111 exhibit. The floor primary coils can 111 at least partially and possibly completely in the tunnel floor 202 be let in. Through the sequence or row of ground primary coils 111 can along the length of the tunnel floor 202 a magnetic charging field is generated, which is set up in the secondary coil 121 one across the tunnel floor 202 moving vehicle 100 a charging current to charge the energy store 103 of the vehicle 100 to induce. The individual floor primary coils can 111 depending on the position of the vehicle 100 be activated or deactivated (so that only at the current position of the vehicle 100 a charging field is generated). So the energy storage 103 of a vehicle 100 in a time-efficient and energy-efficient manner when driving through the loading tunnel 200 Loading.

The tunnel floor 202 is through the tunnel ceiling 203 Protected against environmental influences, so that a robust and durable charging device can be provided. Furthermore, the tunnel floor 202 through the tunnel ceiling 203 protected against precipitation and / or pollution, so that relatively high charging capacities can be reliably achieved. In addition, the loading tunnel 200 on an existing roadway in a cost-effective manner 205 be set up or built up.

Alternatively or in addition to the installation of ground primary coils 111 on the tunnel floor 202 can along the length of the loading tunnel 200 Ceiling primary coils 211 on the tunnel ceiling 203 of the loading tunnel 200 to be ordered. The ceiling primary coils 211 can be set up along the longitudinal spread of the loading tunnel 200 a magnetic charging field on the tunnel ceiling 203 to generate. The individual ceiling primary coils can 211 depending on the position of the vehicle 100 be activated or deactivated (so that only at the current position of the vehicle 100 a charging field is generated). So the energy storage 103 of a vehicle 100 in a time-efficient and energy-efficient manner when driving through the loading tunnel 200 Loading.

One through the loading tunnel 200 moving vehicle 100 can one on the roof 303 of the vehicle 100 arranged roof secondary coil 221 have (possibly in addition to one on the floor 302 of the vehicle 100 arranged bottom secondary coil 121 ). The roof secondary coil 221 can be firmly on the roof 303 of the vehicle 100 be attached. Alternatively, the roof secondary coil 221 on an extension device 301 be fastened (e.g. an extension device working according to the scissors principle 301 ), which is set up the roof secondary coil 221 closer to the tunnel ceiling 203 and / or to the ceiling primary coils 211 to move up.

Through the (possibly additional) provision of an inductive charging system for charging the energy store 103 of a vehicle 100 (over the roof 303 and / or over the floor 302 of a vehicle 100 ) the charging capacity can be increased and thus the required charging time can be reduced. Furthermore, on the tunnel ceiling 203 of a loading tunnel 200 contamination can be avoided in a reliable manner, so that a consistently high charging line can be provided. Furthermore, by using a tunnel ceiling 203 extendable roof secondary coil 221 the air gap of the charging system to be bridged is reduced and thus the charging capacity is increased.

The height of the tunnel ceiling 203 and / or the height of the positioning of the ceiling primary coils 211 in terms of the tunnel floor 202 can be matched to the height of one or more vehicle types. For example, differently dimensioned loading tunnels for different types of vehicles 200 be provided, for example a loading tunnel 200 for cars, a loading tunnel 200 for SUVs (Sport Utility Vehicles) and / or a loading tunnel 200 for trucks.

The vehicle 100 can, as in 3a shown a shielding device 304 with which the magnetic charging field of the primary coils 111 of a loading tunnel 200 from an occupant cabin 306 of the vehicle 100 can be shielded. The shielding device 304 can, for example, have one or more plates made of a material (eg metal) with which the loading field can be shielded. The shielding device 304 can on the ground 302 of a vehicle 100 be arranged around the charging field of primary coils 111 shield that in the lane 205 of the loading tunnel 200 are integrated. Alternatively or in addition, the vehicle can 100 a shielding device 304 exhibit (e.g. on the roof 303 of the vehicle 100 ) to the charging field of primary coils 211 shield that on the ceiling 203 of the loading tunnel 200 are arranged.

A loading tunnel 200 can, as in 3b shown, one or more solar cells 305 have on an outside of the tunnel ceiling 203 are arranged. The one or more solar cells 305 can be configured to generate electrical energy in response to solar radiation. The electrical energy can be stored in an energy store 307 of the loading tunnel 200 (e.g. in an electrochemical energy store 307 , for example in a lithium-ion battery). The one or more solar cells 305 Generated electrical energy can be used to charge the energy store 103 of one or more vehicles 100 used by the loading tunnel 200 drive. The tunnel ceiling 203 typically has a curved shape, which is particularly advantageous for the arrangement of solar cells 305 suitable.

2 B shows a modular structure of a loading tunnel 200 , The loading tunnel 200 comprises a large number of (structurally identical) tunnel segments 230 , This can be a tunnel segment 230 a tunnel floor 202 and possibly a tunnel ceiling 203 exhibit. In the tunnel floor 202 of a segment 230 can have one or more ground primary coils 111 be integrated. Alternatively or in addition, you can use the tunnel ceiling 203 of a segment 230 one or more ceiling primary coils 211 be arranged.

A tunnel segment 230 can one or more first coupling elements 231 at a first end of the tunnel segment 230 and one or more second coupling elements 232 at a second end of the tunnel segment 230 exhibit. The one or more first coupling elements 231 can with the one or more second coupling elements 232 play together that the second end of a tunnel segment 230 with a first end of a subsequent tunnel segment over the respective coupling elements 231 . 323 can be connected (similar to a plug-in system). So can a loading tunnel 200 in a more efficient and flexible way through a series of (structurally identical) tunnel segments 230 being constructed.

The loading tunnel described in this document 200 can be used in an efficient and / or mobile manner on existing roads or lanes 205 be installed. As a result, the existing road infrastructure can be expanded efficiently. The loading tunnel described 200 provides protection for the primary coils 111 . 211 ready for weather conditions, and thus enables consistently high charging performance even over longer periods. Furthermore, the loading tunnel described 200 be installed in existing tunnels of a road network. If necessary, an existing tunnel ceiling can be used as a tunnel ceiling 203 of the loading tunnel 200 be used.

The present invention is not restricted to the exemplary embodiments shown. In particular, it should be noted that the description and the figures are only intended to illustrate the principle of the proposed methods, devices and systems.

Claims (14)

Charging tunnel (200) for inductively charging an electrical energy store (103) of a vehicle (100) traveling through the charging tunnel (200); the loading tunnel (200) comprising - A tunnel floor (202) which can be driven over by vehicles (100); - a tunnel ceiling (203) protecting the tunnel floor (202) at least in regions from precipitation; wherein the tunnel floor (202) and the tunnel ceiling (203) form a cross-sectional area perpendicular to a course of the loading tunnel (200), which enables a vehicle (100) to drive on the tunnel floor (202) through the loading tunnel (200); and - A row of primary coils (111, 211) arranged along the course of the charging tunnel (200), which are set up to generate a magnetic charging field, which is configured in a secondary coil (121, 221) of a vehicle traveling through the charging tunnel (200) Vehicle (100) to induce a charging current for charging an electrical energy store (103) of the vehicle (100). Loading tunnel (200) according to Claim 1 , wherein the tunnel floor (201) is designed to be placed on a roadway (205) which can be driven on by vehicles (100). Loading tunnel (200) according to Claim 2 , wherein the loading tunnel (200) at an entrance and / or at an exit comprises a ramp (201) which enables a vehicle (100) from the carriageway (205) to the tunnel floor (201) and / or from the tunnel floor (201) to drive onto the carriageway (205). Loading tunnel (200) according to one of the preceding claims, wherein the loading tunnel (200) is designed to be transported and installed, including the tunnel ceiling (203) and / or the tunnel floor (201), at different points in a road network. Loading tunnel (200) according to any one of the preceding claims, wherein the loading tunnel (200) comprises a series of ceiling primary coils (211) which are arranged along the course of the loading tunnel (200) on and / or in the tunnel ceiling (203) and / or are attached. Loading tunnel (200) according to one of the preceding claims, wherein the loading tunnel (200) comprises a row of ground primary coils (111) which are arranged along the course of the loading tunnel (200) on and / or in the tunnel floor (202) and / or are attached. Loading tunnel (200) according to Claim 6 with reference to Claim 5 , wherein the loading tunnel (200) is set up to determine position information in relation to at least one secondary coil (121, 221) of a vehicle (100) traveling through the loading tunnel (200); and - to operate the row of ceiling primary coils (211) and / or the row of floor primary coils (111) as a function of the position information in order to generate a magnetic charging field which is set up to charge a charging current in the secondary coil (121, 221) of the vehicle (100) traveling through the loading tunnel (200). Loading tunnel (200) according to any one of the preceding claims, wherein the tunnel ceiling (203) has a height which exceeds a height of a specific type of vehicle, in particular a passenger car or a truck, by 20%, 10% or less. Loading tunnel (200) according to one of the preceding claims, wherein the loading tunnel (200) is set up, - to determine that a vehicle (100) has or will drive at an entrance of the loading tunnel (200) into the loading tunnel (200); and - In response to operating the primary coils (111, 211) of the row of primary coils (111, 211) sequentially starting at one end of the row of primary coils (111, 211) facing the entrance of the charging tunnel (200) to a magnetic charging field to generate, which moves, in particular synchronously with the vehicle (100), from the entrance of the loading tunnel (200) along the course of the loading tunnel (200) to an exit of the loading tunnel (200). Loading tunnel (200) according to any one of the preceding claims, wherein - The charging tunnel (200) comprises one or more solar cells (305) which are arranged on an outside of the tunnel ceiling (203); - The one or more solar cells (305) are configured to generate electrical energy in response to solar radiation; and - The charging tunnel (200) is set up to generate the magnetic charging field based on electrical energy generated by the one or more solar cells (305). Loading tunnel (200) according to any one of the preceding claims, wherein - The loading tunnel (200) comprises a number of identical tunnel segments (230); - a tunnel segment (230) comprises one or more first coupling elements (231) at a first end and one or more second coupling elements (232) at a second end; and - Two directly successive tunnel segments (230) via which one or more first coupling elements (231) of a first tunnel segment (230) and the one or more second coupling elements (232) of a second tunnel segment can be connected to one another. Vehicle (100) comprising - An electric drive motor, which is configured to drive one or more wheels of the vehicle (100); - An electrical energy store (103) which is set up to store electrical energy for the operation of the drive motor; and - a secondary coil (121, 221) which is designed to provide a charging current for charging the energy store (103) on the basis of a magnetic charging field; wherein the secondary coil (121, 221) is arranged on an upper side of the vehicle (100) facing away from the one or more wheels of the vehicle (100). Vehicle (100) according to Claim 12 , wherein the vehicle (100) comprises an extension device (301), which is set up a height of To change secondary coil (121, 221) relative to the one or more wheels of the vehicle (100). Vehicle (100) according to one of the Claims 12 to 13 The vehicle (100) comprises a shielding device (304), which is configured to shield a magnetic charging field acting on the secondary coil (121, 221) from an occupant cabin (306) of the vehicle (100).

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