WO2014029439A1 - Ladeeinrichtung zum induktiven laden - Google Patents
Ladeeinrichtung zum induktiven laden Download PDFInfo
- Publication number
- WO2014029439A1 WO2014029439A1 PCT/EP2012/066427 EP2012066427W WO2014029439A1 WO 2014029439 A1 WO2014029439 A1 WO 2014029439A1 EP 2012066427 W EP2012066427 W EP 2012066427W WO 2014029439 A1 WO2014029439 A1 WO 2014029439A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- primary coil
- coil
- medium
- holding device
- secondary coil
- Prior art date
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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
- B60L53/10—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
- B60L53/126—Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
-
- 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
-
- 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
- B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
- B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- 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
- Y02T90/12—Electric charging stations
-
- 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 invention relates to a charging device for inductively charging a traction battery of an electrically driven vehicle and to a method for positioning a primary coil during inductive charging.
- Electrically driven vehicles have a traction battery
- a primary coil angeord ⁇ net which transmits electrical energy to a secondary coil of the vehicle by means of an electromagnetic field.
- the efficiency of this wireless energy transfer depends essentially on how large the distance between the primary coil and the secondary coil and how exactly the primary coil are aligned to the secondary coil.
- an inductive charging device in which the primary coil toward be ⁇ is moved by means of compressed air technology to the secondary coil of the vehicle. In this case, the position of the vehicle is determined by a block with a recess in which retract the wheels of the vehicle.
- an inductive charging device is furthermore known, wherein the primary coil is installed in a survey of the soil and Ra ⁇ of the vehicle are positioned in a hollow.
- the invention has for its object to provide a device and a method that allows safe and reli ⁇ sige positioning of the primary coil during inductive charging.
- a charging device for inductively charging a traction battery of an electrically driven vehicle with a primary coil, which is movable by means of a pressurized medium in a first direction to a secondary coil of the vehicle, the primary ⁇ coil on an at least temporarily elastic Holding device is arranged.
- this holding device to ⁇ minimum then elastic properties, when the primary coil has been moved to the secondary coil of the vehicle, that is, when the primary coil is in the loading position. In this charging position, the primary coil is arranged as close as possible to the secondary coil of the vehicle.
- the Hal ⁇ tevorraum but can also be permanently elastic, ie have permanently elastic properties.
- the primary coil and / or the secondary coil are advantageously insbeson ⁇ then protected from damage when moving the electrically driven vehicle during the charging process.
- Such movement may occur, for example, when a person enters the vehicle during the charging process or when the vehicle is being loaded. Then the suspension at the wheels of the vehicle is compressed more and the Secondary coil of the vehicle moves down.
- a rigidly arranged primary coil then there is the danger that the primary coil and / or the secondary coil is damaged by this movement. This danger is also significant because the primary coil and / or the secondary coil often have brittle ferrite material.
- the elastic ⁇ cal holding device this danger is reduced, because in such a vehicle movement, the primary coil can yield elastically and therefore damage can be avoided.
- the charging device can be designed so that the pressurized medium is a gas, in particular compressed air.
- the charging device can be configured such that the retaining device connects the primary coil to a substrate (passable by the vehicle). Thereby, the primary coil is ⁇ elastically with the (rigid) base connected so that the primary coil can yield elastically if necessary, at a movement of the vehicle without any damage occurs.
- the charging device may be configured so that the Hal ⁇ tevoriques comprises a bellows, in particular a bellows, which can be filled with the medium.
- a bellows which changes its length when filled with the medium, the primary coil can advantageously be moved towards the secondary coil.
- the bellows in a partially or completely filled with the medium state elastic properties.
- the charging device can be designed such that the primary coil is arranged at one end of the bellows.
- the charging device can also be designed so that the holding device has a hose which can be filled with the medium or the holding device has a cushion which can be filled with the medium.
- a hose or such a pillow have in the unfilled state a fla che shape, so that the primary coil is spaced from the secondary coil of the vehicle.
- a partially or fully ⁇ constantly filled tube or a partially or completely filled cushion advantageously has elastic properties.
- the charging device can also be designed so that the holding device has a membrane which can be arched up with the medium.
- the charging device can be designed so that the membrane comprises the primary coil annular.
- Such a configured membrane allows movement of the primary ⁇ coil in the first direction to the secondary coil.
- the charging device can also be set up so that the primary coil is displaceably arranged in a second direction. This makes it even better align the primary coil bezüg ⁇ Lich the secondary coil.
- the charging device can be designed so that the elasticity of the holding device allows a displacement of the primary coil in the second direction.
- the elastic holding device advantageously not only allows an elastic retraction of the primary coil when external forces act, but also permits alignment of the primary coil
- the charging device can also be designed so that the primary coil is mounted in a plain bearing, which allows a displacement of the primary coil in the second direction. By means of such a plain bearing, a further displacement of the primary coil in the second direction is made possible.
- the charging device may be constructed such that it has a pressure sensor for measuring the contact pressure between the primary coil and the secondary coil and / or a pressure sensor for measuring the pressure of the medium.
- a pressure sensor for measuring the contact pressure between the primary coil and the secondary coil and / or a pressure sensor for measuring the pressure of the medium.
- the charging device can also be designed so that the holding device is sunk in a first position in a (passable by the vehicle) underground.
- This first position is a rest position of the holding device and the primary coil.
- the first position is in the idle state of La ⁇ de Rhein before. It is advantageous that in Oxfordippo ⁇ state of the charging device, the holding device can be brought into the first position and then sunk in the ground. This disturbing obstacles that protrude from the bottom ⁇ avoided.
- the primary coil is arranged protected in the first position.
- the loading device can also be designed so that the holding device protrudes in a second position from the ground in the first direction. This second position is the working position or loading position of the holding device and the primary coil.
- the holding device is advantageously ge ⁇ into the second position in which the holding device from the substrate in the first direction protrudes (in the direction of the secondary coil).
- the charging device can be designed such that the second direction is aligned perpendicular to the first direction.
- the charging device may be configured such that the first direction is the vertical direction and the second direction is a horizontal direction.
- a method for positioning a primary coil when inductively charging a traction battery of an electrically driven vehicle wherein in the method, a primary coil is moved by means of a pressurized medium in a first direction to a secondary coil of the vehicle, the primary coil of a at least temporarily elastic holding device
- This method can be designed so that the pressurized medium is a gas, in particular compressed air.
- the method can proceed such that the primary coil is moved by means of the medium in the first direction until the Pri ⁇ märspule contacts the secondary coil.
- This will advantageously be converted enables the primary coil passes very close to the secondary coil of the vehicle, whereby a high We ⁇ ciency in energy transfer is possible.
- the method may be such that the contact is detected by means of at least one pressure sensor.
- the movement of the primary coil can be stopped by, for example, the pressure of the medium is no longer he increased ⁇ .
- the method can proceed in such a way that the contact pressure between the primary coil and the secondary coil is measured by the pressure sensor or the pressure of the medium is measured by the pressure sensor.
- the Touched secondary coil creates a contact pressure between the primary coil and the secondary coil, which is measured by means of the pressure ⁇ sensor.
- the pressure of the Me ⁇ diums increases, since the primary coil does not move further.
- the method can proceed such that the holding device allows a displacement of the primary coil in a second direction.
- the displacement of the primary coil in the second direction allows an even better orientation of the primary coil to the secondary coil of the vehicle.
- the method may be configured to pass electrical current through the primary coil, thereby aligning the primary coil (in the second direction) with respect to the secondary coil.
- the primary coil is directed bezüg ⁇ Lich from a magnetic field of the secondary coil.
- the electric current generates a magnetic field in the primary coil.
- the secondary coil also has such a magnetic field (because, for example, electric current is simultaneously conducted through the secondary coil). Due to the Anzie ⁇ hung the two magnetic fields, the primary coil aligns with the secondary coil. Through this orientation of the effect ⁇ degree of wireless transfer of energy between the primary coil and the secondary coil is further increased.
- the method may be configured to pass electrical current through an electromagnet disposed on the primary coil, thereby aligning the primary coil (in the second direction) with respect to the secondary coil.
- the primary coil can be aligned, in particular, with respect to an electromagnet arranged on the secondary coil, through which electrical current is also conducted.
- the method may also be configured such that the primary coil aligns concentrically to the secondary coil before ⁇ part by way of proving to the primary coil so directed to the secondary coil of ⁇ that both coils are arranged concentrically.
- the Primary coil and the secondary coil In a concentric alignment or arrangement are the Primary coil and the secondary coil about a common center point or ⁇ arranged around a common axis.
- the method may be such that, after alignment, the pressure of the medium is increased, thereby fixing the position of the aligned primary coil with respect to the secondary coil.
- the primary coil is more ⁇ pressed against the secondary coil. This who the frictional forces between the primary coil and the secondary coil increases ⁇ . This increased frictional forces cause the position of the aligned primary coil with respect to the secondary coil no longer changes, but is fixed.
- the method may be configured such that the second direction is aligned perpendicular to the first direction.
- the method may be configured such that the first direction is the vertical direction and the second direction is a horizontal direction.
- this method also has the advantages that are mentioned above in connection with the charging device.
- the invention will be explained in more detail below with reference to exemplary embodiments. This is in
- Figure 1 is a schematic sectional view of a first embodiment of a charging device with a bellows, in
- Figure 2 shows another embodiment of a Ladeeinrich ⁇ tion with a hose, in
- Figure 3 shows another embodiment of a Ladeeinri device with a pillow
- Figure 4 shows another embodiment with a diaphragm having a holding device in a first position
- Figure 5 the holding device of Figure 4 in a second
- FIG. 6 shows the holding device of Figure 4 in a plan view and in
- FIG. 7 shows a flow chart of an embodiment of a
- FIG. 1 shows schematically an electrically driven vehicle 1 is shown.
- This electric automobile 1 has a driving battery 3, which stores the information on driving be forced ⁇ electrical energy.
- the driving battery can be charged.
- electric power is supplied from the secondary coil 5 to the traction battery 3. This is merely symbo ⁇ cally represented by an electrical connection 7.
- the electrically driven vehicle 1 is on a lower ⁇ ground 10, which is passable by the vehicle.
- This underground may be, for example, the ground, a street, a parking lot or a parking space in a parking garage.
- a charging device 12 is arranged, of which only selected components are shown in the embodiment of Figure 1.
- This charging device has a primary coil 13.
- the primary coil and the secondary coil can, for. B. have a diameter between 30 and 60 cm. In this case, smaller coils are advantageous because they require less space, we have niger weight and have better integrability in the charger and in the vehicle.
- the primary coil 13 is angeord ⁇ net on a holding device 15.
- the holding device 15 is configured in the embodiment as a bellows 15, more precisely as a bellows.
- the primary coil 13 is arranged at the end of the bellows 15.
- the bellows is connected via a pressure line 18 and an electrically controllable valve 20 to a compressor 22.
- the compressor 22 generates a pressurized medium in the form of compressed air. (In other embodiments, other gases may be used as the medium in place of compressed air.)
- This pressurized medium passes from the compressor with the valve 20 open through the compressed air line 18 to the bellows 15 and causes the bellows 15 to expand along the arrow 25 , ie enlarged.
- the primary coil 13 is in a first direction (in the embodiment, the Z direction corresponds to) moves to the secondary coil 5 of the driving apparatus 1 ⁇ out. If the pressure in the bellows 15 is increased by means of the compressor 22, then the primary coil 13 is moved toward the secondary coil 5 and the distance between the two coils decreases.
- valve 20 in the bellows 15, the valve 20 is closed, then the pressure in the holder 15 remains constant and the primary coil remains in its depending ⁇ nosti position.
- pressure By means of the valve 20 pressure bringslas ⁇ sen, so the pressure in the holding device 15 and the primary coil 13 is reduced decreases due to their weight after un ⁇ th, that is, the primary coil moves away from the secondary coil 5 of the vehicle.
- the air pressure in the bellows 15 is increased by means of the compressor 22. Then the moves
- the first pressure sensor 30 is angeord ⁇ net on the primary coil 13.
- the second pressure sensor 33 is arranged on the secondary coil 5.
- the first pressure sensor and / or the second pressure sensor can also be designed as a simple switch, which switches when a predetermined contact pressure is reached, whereby a corresponding signal is produced.
- the valve 20 is closed, so that the pressure in the bellows 15 remains constant and the contact pressure between the primary coil 13 and the secondary coil 5 does not increase any further.
- the compressor 22 can be switched off.
- the bellows 15 has elastic properties. Because of the thin walls of the bellows, the primary coil 13 may be in a second direction (in the execution ⁇ example is that direction in the XY plane) moves the advertising. So it is possible to shift the primary coil in this second direction. In the illustrated second position, the elasticity of the holding device 15 thus allows a shift of the primary coil in the second direction, ie a displacement of the primary coil along the arrow 44th
- both the primary coil 13 and the secondary coil 5 are oriented in the aligned to stand ⁇ a common center or are with respect to a common axis.
- This common axis is indicated in the embodiment as an axis 40.
- the aligned state of the primary coil is shown in the second position of the holding device. In this second position, the holding device protrudes with the primary coil arranged thereon from the substrate 10 in the first direction. (Only for the sake of clarity, an air gap between the primary coil 13 and the secondary coil 5 is shown in Figure 1.
- this air gap will be negligibly small.
- the alignment of the primary coil can also be effected by means of an electromagnet.
- at least one electromagnet 47 is arranged on the primary coil and at least one further ⁇ er solenoid 49 on the secondary coil.
- the two electromagnets are flowed through with direct current; the resulting magnetic field of the electromagnet 47 and the resulting magnetic field of the electromagnet 49 attract.
- the primary coil 13 in so long the second direction shifted until the primary coil 13 is aligned with the secondary coil 5.
- the valve 20 After aligning the primary coil 13, the valve 20 is open, thereby increasing the overall pressure of the medium in the bellows 15 wei ⁇ ter. Characterized the contact pressure between the primary coil 13 and the secondary coil 5 is increased and the Rei ⁇ bung forces between the primary coil 13 and the secondary coil 5 to increase. Therefore, the aligned primary coil is relative to the secondary coil 5 fixed, ie, the position of the primary ⁇ coil is set relative to the secondary coil 5.
- the inductive charging process can begin by applying an alternating current to the primary coil.
- This alternating current produces an electromagnetic alternating field which passes through the secondary coil 5.
- an electric current is induced in the secondary coil 5, which is used to charge the traction battery 3.
- the components of the charging device that are needed for the actual inductive charging process such as
- Switching devices, converters or power electronic assemblies are not shown in FIG. 1 for reasons of clarity. Also on the part of the vehicle 1 such components are not shown.
- the valve 20 After completion of the inductive charging, the valve 20 is opened, whereby the pressure in the bellows 15 decreases.
- the bellows can also be evacuated by means of a pump or by means of the compressor.
- the primary coil 13 drops downwards due to its weight and is sunk completely in the ground 10 together with the holding device 15.
- a recess 45 is present in the substrate 10, which receives the holding device and the primary coil. Now is the first position, in which the holding device is completely sunk in the ground 10.
- the valve 20 is turned off so that the pressure of the
- the holding device 15 is due to the compressible
- FIG. 2 shows a further exemplary embodiment of a charging device 200.
- This charging device 200 differs from the charging device 12 described with reference to FIG. 1 in that, instead of the bellows 15, the retaining device has a hose 202 which can be filled with the medium.
- the exemplary embodiment is as ⁇ at an air hose 202 which is shown in Figure 2 in ge Scholl- th state.
- This tube has the shape of a torus. (A torus has a shape similar to an air hose of a tire or similar to a swim tire.) In the sectional view of FIG. 2, only two circular cut surfaces are visible from the torus.
- FIG. 2 shows the second position of the air tube 202 is shown, in which the air tube and the primary coil arranged thereon from the substrate 10 in the first direction stuntste ⁇ hen.
- the primary spool 13 moves downward with the hose 202 and is completely received by the recess 45.
- FIG 3 is shown as a further embodiment of a signaling device La ⁇ 300th
- This charging device 300 differs from the charging device 12 described with reference to FIG 1 only in that the holding device instead of the bellows 15 has a cushion 302 which can be filled with the medium (here: an air cushion 302).
- a cavity 404 is arranged in a substrate 402 in a substrate 402, a cavity 404 is arranged. This cavity 404 can be filled by means of the compressor 22, the valve 20 and the compressed air lines 18 with a pressurized medium in the form of compressed air.
- the cavity 404 has a first annular groove 406 and a second annular groove 408.
- wel ⁇ Ches has the shape of a flat circular cylinder.
- the primary coil 13 is arranged so that it can move within the slide bearing in the direction of the XY plane, that is, is displaceable in this plane.
- the primary spool 13 is slidably disposed in the sliding bearing 410 in the second direction (XY plane direction).
- the primary coil is suspended freely floating, so that the primary coil can move in the second direction or is displaceable.
- a power supply cable 412 extends to the primary coil 13.
- the sliding bearing 410 is connected by means of a stretchable membrane 413 to the substrate 402 airtight.
- the Gleitla ⁇ ger 410 itself is designed airtight. As a result, no air can escape from the cavity 404.
- the diaphragm 413 comprises the sliding bearing 410 and thus also the primary coil 413 arranged in the sliding bearing 410 in a ring shape.
- the holding device is formed by the sliding bearing 410 and the annular membrane 413.
- FIG. 4 shows the first position of the holding device, in which the holding device is completely sunk into the base 402.
- the annular diaphragm is in the first position in the second annular groove 408.
- In this first position form the sliding bearing 410 and the Membrane 413 together with the surface of the substrate 402 a smooth plane, so that no obstacle (eg tripping ⁇ trap) protrudes from the substrate 402.
- the Haltevorrich ⁇ tion and the primary coil can thus be installed flush and seamless in the ground / floor.
- the expandable diaphragm 413 allows the primary coil to extend toward the secondary coil of the vehicle.
- the nikringför ⁇ -shaped membrane 413 seals off the cavity 404, and thus the primary coil 13 against contamination, which on the particular surface ⁇ surface of the substrate (z. B. road surface) may occur Kgs ⁇ NEN.
- FIG. 5 shows the second position, in which the holding device protrudes from the substrate 402 in the first direction (Z-direction). If now the valve 20 ge ⁇ opens and thereby the medium is discharged from the cavity 404, then the sliding bearing 410 moves with the primary coil 13 back into the first annular groove 406. Likewise, the diaphragm 413 moves back into the second annular groove 408. This then returns to the initial state, as shown in FIG. FIG. 6 is a schematic plan view of the arrangement according to FIG. 4.
- the membrane 413 which includes the sliding bearing 410 and thus the primary coil 13 annular.
- the primary coil 13 is shown by dashed lines, as this is not visible in the plan view, but is covered by the upper cover of the sliding bearing 410.
- the displaceability of the primary coil 13 in the second direction within the XY plane is indicated by arrows 415.
- the membrane 413 may also be configured circular and completely cover the slide bearing 410 upwards.
- the membrane may also have another configuration, it may for example also be oval.
- FIG. 7 an embodiment of the method is illustrated for positioning the primary ⁇ coil in a flow chart again.
- Starting point is the first position of the holding device, in which the holding device and the primary coil are sunk in the ground (block 700).
- the pressure of the medium eg, the pressure of the compressed air
- block 710 the pressure of the medium
- the primary coil contacts the secondary coil, this contact is detected by means of a pressure sensor (block 710)
- the primary coil thus now touches the secondary coil, but is displaceable in the second direction due to the elasticity of the holding device. Now, a DC current flows through both the primary coil and the secondary coil. Magnetic fields build up in both coils. Due to the attractive forces between the magnetic fields, the primary coil concentrically aligns with the secondary coil. This ensures optimum alignment of the primary coil with the secondary coil (block 730).
- the pressure of the medium is further increased.
- the primary coil is still more suppressed ge ⁇ against the secondary coil, whereby the friction forces between the primary coil and Increase secondary coil.
- the aligned primary coil is fixed to the secondary coil, so that the primary coil can not slip during the subsequent charging process.
- the coil through the primary and the secondary coil the DC current flowing istchal ⁇ tet and the pressure of the medium is kept constant (block 740).
- the second position of the holding device is present (block 750).
- the actual inductive charging process can be carried out now, that the transmission of electrical energy from the primary coil to the secondary coil can be ⁇ ginnen.
- the air gap between the primary coil and the Se ⁇ secondary coil is significantly reduced, ideally, the air gap can be reduced to zero.
- the position of the primary coil also remains unchanged during a movement of the vehicle (eg when the vehicle is rocking or when the vehicle load changes due to the driver getting in) since the pressurized medium continues to press the primary coil against the vehicle.
- a sufficient pressure reserve in the cavity of the holding device in particular in the bellows, the hose, the cushion or under the
- the primary coil and the secondary coil are protected against mechanical damage during movement of the vehicle.
- the coils can additionally be replaced by an elastic, e.g.
- Foam-like, coating protected from mechanical damage By means of a switchable valve in the supply line for the medium, the pressure of the medium can be specifically influenced and held.
- the valve When switching off without power (and thus, for example, during a power failure), the valve opens so that the pressure in the medium decreases. As a result, the holding device returns to its first position (for example, the bellows or the air tube or the air cushion collapses). The primary coil sinks down and disappears completely in the
- a contact between the primary coil and the secondary coil is detected by a pressure sensor or switch, which is located on the top of the primary coil and / or Se ⁇ secondary coil.
- the air gap between the primary coil and the secondary coil can be reduced to almost zero in the aligned state.
- the maximum transmissible power can be be ⁇ siderably increased, for example from 3.3 kW to 12 kW while reducing the coil diameter. It is also advantageous that during the inductive charging no object between the primary coil and secondary coil can gene, because no or almost no air gap is present.
- the gap between the primary coil and the seconding ⁇ därspule also remains constant (ideally to zero re ⁇ Jerusalem remains) when the vehicle is moving, so if for example, a person sits down or in the vehicle on the vehicle teetering or rocking.
- the primary coil of the ⁇ movement of the vehicle follows or follows the movement of the vehicle.
- the pressure of the medium under pressure need not be increased because there is sufficient pressure reserve in the medium.
- This flexibility or elasticity of the holding device has the further advantage that the coils are not damaged during movements of the vehicle.
- a thin elastic surface eg, an elastic coating
- the pressure of the medium in the retaining device is rapidly reduced. This can be done on the one hand by opening the valve or by evacuating the holding device by means of a pump or by means of the compressor.
- the holding ⁇ device with the primary coil thereby moves away from the secondary coil of the vehicle and returns to their safe Ru ⁇ hegna or in the underground (a first position).
- the valve 20 can be designed so that this reduces the pressure of the medium as soon as the electrical valve 20 is no longer supplied with voltage (eg in a
- the compressed air is discharged from the holding device.
- Such persistence in the second position could cause damage when the vehicle is moving (eg when driving away).
- the charging device is therefore intrinsically safe.
- the first position of the holding device can also be referred to as a rest position, idle state, safe state, retracted state or initial state.
- the second position of the holding device can also be used as a working position, Loading position, loading position or extended state are called.
- the first direction corresponds in the embodiment of the Z-direction, ie the vertical direction.
- the second direction corresponds to a horizontal embodiment Rich ⁇ tung, ie, a direction, which lies in the XY plane, ie, the second direction is perpendicular to the first direction from ⁇ .
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/423,375 US9682632B2 (en) | 2012-08-23 | 2012-08-23 | Charging device for inductive charging |
CN201280075306.2A CN104582999B (zh) | 2012-08-23 | 2012-08-23 | 用于感应充电的充电装置 |
DE112012006833.5T DE112012006833A5 (de) | 2012-08-23 | 2012-08-23 | Ladeeinrichtung zum induktiven Laden |
PCT/EP2012/066427 WO2014029439A1 (de) | 2012-08-23 | 2012-08-23 | Ladeeinrichtung zum induktiven laden |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2012/066427 WO2014029439A1 (de) | 2012-08-23 | 2012-08-23 | Ladeeinrichtung zum induktiven laden |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014029439A1 true WO2014029439A1 (de) | 2014-02-27 |
Family
ID=46801464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/066427 WO2014029439A1 (de) | 2012-08-23 | 2012-08-23 | Ladeeinrichtung zum induktiven laden |
Country Status (4)
Country | Link |
---|---|
US (1) | US9682632B2 (de) |
CN (1) | CN104582999B (de) |
DE (1) | DE112012006833A5 (de) |
WO (1) | WO2014029439A1 (de) |
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JP2019145728A (ja) * | 2018-02-23 | 2019-08-29 | 株式会社Ihi | コイル装置 |
EP3758029A4 (de) * | 2018-02-23 | 2021-11-24 | Ihi Corporation | Spulenvorrichtung |
JP7063002B2 (ja) | 2018-02-23 | 2022-05-09 | 株式会社Ihi | コイル装置 |
US12009131B2 (en) | 2018-02-23 | 2024-06-11 | Ihi Corporation | Coil device |
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Also Published As
Publication number | Publication date |
---|---|
DE112012006833A5 (de) | 2015-05-21 |
CN104582999B (zh) | 2017-06-06 |
CN104582999A (zh) | 2015-04-29 |
US9682632B2 (en) | 2017-06-20 |
US20150224882A1 (en) | 2015-08-13 |
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