Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
  • B60L53/30—Constructional details of charging stations
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
  • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
  • B60L53/12—Inductive energy transfer
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
  • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
  • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
  • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
  • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
  • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
  • H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/60—Other road transportation technologies with climate change mitigation effect
  • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/60—Other road transportation technologies with climate change mitigation effect
  • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02T90/10—Technologies relating to charging of electric vehicles
  • Y02T90/14—Plug-in electric vehicles

Definitions

• the present invention relates to a stationary floor assembly for an inductive charging device for inductively charging a motor vehicle.
• the motor vehicle to be loaded can drive over the floor assembly, which can lead to damage to the floor assembly, at least in the long term, if the load capacity is too low.
• the present invention therefore deals with the problem of specifying an improved or at least different embodiment for a stationary floor assembly of the generic type, which in particular has a higher load capacity.
• This problem is solved according to the invention by the subject matter of independent claim 1.
• Advantageous embodiments are the subject of the dependent claims.
• the present invention is based on the general idea of increasing the mechanical load capacity of a stationary ground assembly for an inductive charging device by means of special pressure platforms on a stranded support, over which a spirally wound conductor of a flat coil is held.
• the stationary floor assembly according to the invention for an inductive charging device for inductively charging a motor vehicle parked on a surface has a housing with a base plate and a housing cover covering the base plate, the base plate extending in the form of a plate transversely to a distance direction.
• An installation space is provided in the housing, in which at least one flat coil held by a stranded carrier is arranged with the aforementioned spirally wound conductor.
• the stranded wire carrier and the flat coil are arranged in the distance direction between the base plate and the housing cover.
• a core arrangement with at least one core body, for example a ferrite plate, for magnetic flux guidance, which is arranged in the distance direction between the base plate and the flat coil and extends in the form of a plate transversely to the distance direction.
• a cavity is arranged between the at least one core body, for example a ferrite plate, and the base plate, through which a support extends in the distance direction. The support is supported on the base plate at the bottom and carries the flat coil with the wound conductor and the stranded carrier.
• the strand carrier itself has a pressure platform, via which a load distribution structure, for example a load plate, which is arranged between the housing cover and the strand carrier, is supported directly or indirectly on an associated support.
• a load distribution structure for example a load plate
• the pressure platform which is preferably at least approximately in the distance direction, in particular even completely, aligned even with regard to the flat cross-sectional extents with respect to the support arranged underneath, improved load transfer of a motor vehicle driving on the housing cover can be achieved by the type of load in the endangered components of the stranded support or flat coil and core arrangement being largely uniaxial Compressive normal stress occurs, which significantly reduces the risk of failure in the components in question and in the other load-transmitting components.
• the load distribution structure is preferably designed in such a way that it enables support in all conceivable operating states exclusively via the pressure platforms or further supports in the base plate. This means that even if the load distribution structure is bent, there is no contact between it and the strand support outside the pressure platform or the pressure platforms, which means that there is no damage to the strand support or the flat coil or the core arrangement arranged underneath if the stationary floor assembly is driven over by a motor vehicle are to be feared.
• the pressure platforms face the load distribution structure. Usually, several such pressure platforms are provided, for example in the distance direction, each associated with a support arranged underneath, whereby a close-meshed support of the load distribution structure and thereby a small deflection of the load distribution structure can be achieved.
• the strand support is supported directly on an associated support via a spacer plate.
• the core bodies are located transversely to the spacing direction at a distance from the respective support, the support being arranged transversely to the spacing direction in a central region of the flat coil and consequently one of the Flat coil generated magnetic field not or only marginally hindered.
• the strand support is supported on the associated support via a spacer plate and a core body. Since in this case the core body shields the support from the magnetic field, it is also conceivable in this embodiment that the support is at least partially made of a metal.
• the strand carrier has support platforms via which it is supported on the spacer plate.
• the stranded wire carrier can therefore be designed to be open from below and have receptacles into which the respective conductor of the flat coil is inserted, for example even clipped.
• the support pedestals allow the strand carrier to be evenly supported on the spacer plate, with a lower surface pressure being achieved as the number of support pedestals increases.
• the strand support can have a lattice-like structure and can therefore be designed to be comparatively stiff.
• At least one pressure platform is expediently formed in one piece with the strand support.
• the respective pressure platform and the strand support can be designed as, for example, a one-piece plastic injection-molded part and can therefore be produced both cost-effectively and with high quality.
• at least one pressure platform is designed separately from the strand carrier and is connected to the strand carrier in a form-fitting manner, for example clipped or screwed, and/or in a material bonding manner, for example glued or welded.
• Such a pressure platform, which is designed separately from the strand support can be supported on the strand support or reach through it, whereby direct support of the load distribution structure via the pressure platform and the spacer plate or, if necessary, the core body on the support is possible.
• the pressure platform is made of plastic, in particular of an elastomer with a Shore A > 50 and/or a modulus of elasticity of ED 5,000 MPa.
• plastic in particular of an elastomer with a Shore A > 50 and/or a modulus of elasticity of ED 5,000 MPa.
• the pressure platform is made of ceramic. The only important thing is that the pressure platform or the strand support are made of a material that does not or only marginally influence the power transmission of an alternating electromagnetic field built up by the flat coil or the core arrangement.
• the load distribution structure is designed as a plate made of plastic, in particular with a modulus of elasticity of EL 10 GPa.
• a particularly suitable material here is a plastic, in particular polyamide (PA), polyoxymethylene (POM), polyphenylene sulfide (PPS), polyether ether ketone (PEEK).
• the load distribution structure is expediently designed as a plate made of fiber-reinforced plastic, in particular made of glass fiber-reinforced plastic.
• Fiber reinforced plastics in particular have a significantly increased strength as well as a significantly increased modulus of elasticity.
• short fibers, long fibers and also continuous fibers can be used.
• Glass fibers also offer the great advantage that they do not influence an alternating electromagnetic field.
• an air flow path leads through the cavity, so that, for example, an electronic component arranged therein can be cooled by means of an air flow.
• the supports for supporting the core arrangement or the strand carriers and the load distribution structure are also located in the cavity, cooling of the flat coils can also be achieved indirectly by cooling the supports.
• the core bodies of the core arrangement are arranged in the cavity and the air flow path and can also be cooled, for example, by cooling air flowing there. Such cooling increases the performance of the stationary floor assembly.
• a further increase is possible, for example, by providing cooling channels for a coolant in the base plate, whereby the base plate and thus also the cavity above it and the supports can be actively cooled.
• the housing cover is supported on the base plate via housing supports.
• These housing supports surround the cavity and can also be used to transfer the load.
• the main load transfer when a motor vehicle drives over the stationary floor assembly according to the invention takes place via the load distribution structure, such as the pressure platform and the supports.
• the load distribution structure can, for example, rest on consoles of the housing supports and thereby be held in a form-fitting manner by them. Additionally or alternatively, the load distribution structure can be connected to at least one housing support, for example glued, welded or screwed. This makes it comparatively easy to remove the load distribution structure Simultaneous removal of the housing cover from the base plate is possible. In addition, the load distribution structure can also be connected to an underside of the housing cover, for example welded, glued or screwed.
• At least one further support is expediently provided, via which the load distribution structure is supported directly on the base plate. This means that support can also be provided outside of the pressure platforms without putting any strain on the core arrangement or the flat coil.
• FIG. 2 shows a representation as in FIG. 1, but in a different embodiment
• FIG. 3 shows a detailed sectional view of a pressure platform formed in one piece with a strand support
• FIG. 4 shows a representation as in FIG. 3, but with a separately designed pressure platform
• FIG. 5 shows a representation as in FIG. 4, but with a continuous pressure platform
• FIG. 6 is a view from below of a stranded wire carrier with an inserted flat coil
• Fig. 8 is a representation as in Fig. 7, but from a view obliquely from below.
• a stationary floor assembly 1 for an inductive charging device 2 for inductive charging of a motor vehicle, not specified, has a housing 3 with a base plate 4 and a housing cover 5 covering the base plate 4.
• the base plate 4 extends transversely to a distance direction 6, which usually essentially coincides with a vertical.
• a stranded carrier 7 which has a spirally wound conductor 9 and is spaced from the base plate 4 in the distance direction 6, that is to say is arranged lying above it.
• a core arrangement 10 is provided with at least one core body 11, for example a ferrite plate, for magnetic flux guidance, which is spaced in the distance direction 6 from the base plate 4 and the flat coil 8 and is therefore arranged between the base plate 4 and the conductor 9 of the flat coil 8 and is transverse extends to the distance direction 6.
• a cavity 12 is formed, through which, for example, an air flow path 13 is guided, through which cooling air 14 can flow.
• at least one electronic component 20 can be arranged in the cavity 12, which can be additionally cooled by the cooling air 14 flowing in the air flow path 13.
• At least one support 15 is provided between the flat coil 8 and the base plate 4, which extends through the cavity 12 in the distance direction 6.
• the strand support 7 also has at least one pressure platform 16, with a load distribution structure 17, for example a load distribution plate, being arranged between the housing cover 5 and the strand support 7, which is located on the at least one pressure platform 16 and above this on the associated and in the distance direction 6 Support 15 arranged underneath is supported.
• the stationary floor assembly 1 offers the great advantage that when a load is applied from above, for example by a motor vehicle driving over the stationary floor assembly 1, the load is introduced exclusively via the pressure platforms 16 via the strand support 7 or the supports 15 arranged underneath, a direct one Load introduction from the load distribution structure 17 into the flat coil 8, even in the event of a deflection, However, it can be reliably avoided, which means that damage in particular can be avoided. 1 and 2, a large number of such pressure platforms 16 are provided with supports 15 arranged underneath in the distance direction 6, whereby a comparatively homogeneous support of the load distribution structure 17 and therefore also a slight deflection of the same is possible.
• the load distribution structure 17 can also be supported directly on the base plate 4 via a further support 18.
• the pressure platforms 16 and the supports 15 can generally be made smaller, in particular slimmer.
• strand carrier 7 is supported on an associated support 15 via a spacer plate 19 and a core body 11, while according to Fig. 2 the strand carrier 7 is directly on a spacer plate 19 associated supports 15 are supported.
• the advantage of the embodiment shown in FIG. 2 is, in particular, that the core bodies 11 of the core arrangement 10 are not loaded, regardless of the load acting from above.
• the housing cover 5 also has housing supports 22, via which the housing cover 5 is supported on the base plate 4.
• the housing supports 22 can also have consoles 23 (see FIG. 1 ), so that according to FIG. 1 the load distribution structure 17, for example the load distribution plate, can be held in a form-fitting manner between the housing cover 5 and the consoles 23.
• An at least slight load support of the load distribution structure 17 is therefore also possible via the consoles 23 and the housing supports 22 in the base plate 4.
• the load distribution structure 17 can be firmly connected to at least one housing support 22, a console 23 and/or the housing cover 5, for example glued, welded or screwed. This makes it possible in particular to simultaneously remove the load distribution structure 17 with the removal of the housing cover 5.
• a strand carrier 7 is shown, which is formed integrally with the pressure platform 16, so that in this case the pressure platform 16 and the strand carrier 7 are formed in one piece.
• the pressure platform 16 is designed separately from the strand carrier 7 and is only held in a form-fitting manner in a recess in the strand carrier 7.
• the pressure platform 16 can also be glued to the strand carrier 7.
• the pressure platform 16 is also designed separately from the strand carrier 5, but extends completely through the strand carrier 5, whereby a direct load transfer from the load distribution structure 17 via the pressure platform 16 into the spacer plate 19 and from there either according to FIG Core body 11 and the support 15 or according to FIG. 2 directly into the support 15. Also in the embodiment shown in FIG. 5, the pressure platform 16 can be connected to the strand carrier 7 not only in a form-fitting manner, but also, for example, in a cohesive manner, for example glued or screwed.
• the pressure platform 16 and also the strand support 7 are preferably made of a plastic, for example an elastomer with a Shore A hardness of > 50 and/or a modulus of elasticity of ED 5,000 MPa.
• plastic such as EPDM (ethylene-propylene-diene (monomer) rubber) or polypropylene (PP).
• the load distribution structure 17 in turn should be very stiff and have high strength in order to limit deflection of the load distribution structure 17 even when the load distribution structure 17 is driven over between two supports 15 in such a way that there is no contact between the load distribution structure 17 and the strand support 7 under any load condition .
• it can also be fiber-reinforced, in particular glass fiber-reinforced. Purely theoretically, other fibers, such as aramid fibers, are of course also possible.
• FIGS. 6 to 8 If you look at the strand carrier 7 according to FIGS. 6 to 8, you can see that these have support platforms 24, via which the strand carrier 7 is supported on the spacer plate 19 and on the core body 11 or directly on the support 15.
• the support platforms 24 have receptacles 25, viewed from below, in which the respective conductor 9 of the flat coil 8 is guided. In the installed state, as shown for example in FIG. glued, which in turn lie on the supports 15.
• the type of loading particularly in the vulnerable components, strand support 7 or flat coil 8 and core arrangement 10 or core body 11, is largely uniaxial as a compressive normal stress in the distance direction 6, which significantly reduces the risk of failure in the said components and in the other load-transmitting components.
• both the strand carrier 7 and the respective pressure platforms 16 and the load distribution structure 17 and the housing cover 5 are made of an electromagnetic neutral material, for example plastic or ceramic, power transmission from the flat coil 8 and the associated core bodies 11
• the alternating electromagnetic field built up is not or only marginally affected.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Computer Networks & Wireless Communication (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)
• Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
• Linear Motors (AREA)
• Charge And Discharge Circuits For Batteries Or The Like (AREA)

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Citations (5)

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• 2022
  • 2022-03-14 DE DE102022202488.5A patent/DE102022202488A1/de active Pending
• 2023
  • 2023-03-10 CN CN202380027433.3A patent/CN118922330A/zh active Pending
  • 2023-03-10 WO PCT/EP2023/056100 patent/WO2023174802A1/de not_active Ceased
  • 2023-03-10 US US18/847,220 patent/US20250187458A1/en active Pending
  • 2023-03-10 JP JP2024555024A patent/JP2025513946A/ja active Pending

Patent Citations (5)

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