CN104395131A - Detection coil assembly, energy transfer coil assembly and detection system for detecting electrically conductive foreign bodies - Google Patents
Detection coil assembly, energy transfer coil assembly and detection system for detecting electrically conductive foreign bodies Download PDFInfo
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- CN104395131A CN104395131A CN201280074119.2A CN201280074119A CN104395131A CN 104395131 A CN104395131 A CN 104395131A CN 201280074119 A CN201280074119 A CN 201280074119A CN 104395131 A CN104395131 A CN 104395131A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
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- 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
- B60L53/124—Detection or removal of foreign bodies
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- 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
- B60L53/36—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
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- 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
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- 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
- B60L2210/00—Converter types
- B60L2210/30—AC to DC converters
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- 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
- B60L2210/00—Converter types
- B60L2210/40—DC to AC converters
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- 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
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
- B60L2270/14—Emission reduction of noise
- B60L2270/147—Emission reduction of noise electro magnetic [EMI]
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- 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
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- 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
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- 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
- Y02T10/72—Electric energy management in electromobility
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- 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
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to a detection coil assembly (34) used for detecting electrically conductive foreign bodies (80) in the region of an energy transmitter coil (14). The detection coil assembly comprises at least one first multipole-detection coil (31, 32) having at least two mutually opposite windings (35, 36). An energy transfer coil assembly (13) for an inductive energy transfer system (10) is also provided, with the energy transfer coil assembly (13) comprising an energy transfer coil (14, 94) for transferring energy. The energy transfer coil assembly (13) also comprises the detection coil assembly (34). Furthermore, a detection system (30) for detecting the electrically conductive foreign bodies (80) in the region of the energy transmitter coil (14) is provided. The detection system (30) comprises an energy transfer coil assembly (13) and is designed to detect detection signals (54) in the electrically conductive foreign body (80) to be detected, with the detection signals being excited in the electrically conductive foreign body (80) by means of the energy transfer coil (14), the detection coil assembly (34) or an additional detection transmitter coil.
Description
Technical field
The present invention relates to a kind of explorer assembly for identifying conduction allosome in the region of energy transmitter coil.Conduction allosome normally metal parts.Such as, but substantially, the conduction allosome that identify also can comprise the non-metal raw material that can conduct electricity, the liquid that can conduct electricity.
In addition, the present invention relates to a kind of Energy Transfer coil pack of the energy transmission system for inductance, wherein, Energy Transfer coil pack comprises Energy Transfer coil in order to transmitting energy.
In addition, the present invention relates to a kind of detection system for identifying conduction allosome in the region of energy transmitter coil.
Background technology
In order to the battery charge (or electric discharge) for elec. vehicle, develop the power transmission system of inductance effect.Its by the coil run by means of controlled resonant converter to forming.The suitable energy transmitter coil be fixedly installed in parking area guides alternating current (such as having the frequency of such as general 140kHz), its moveable, in vehicle bottom or below receiving coil in induced voltage.When transmitting the power of multiple kilowatts, flux density between the gap (air gap) of the voltage transformer formed by this way greatly to for, the metal parts (car key, finger ring, beverage can, packaging film) inadvertently dropped on energy transmitter coil can be heated consumingly by eddy current or magnetic loss, and the danger even melted can be faced.Not only result in the infringement of function thus, result also in huge injury danger and the fire of personnel.
Therefore need detection system, it reliably have detected the metal object of the interference in magnetic field.It can provide in principle, assesses the impedance variations of the energy transmitter coil limited by eddy current.But be less can only affect impedance by little object in the problem that this draws, but the vehicle bottom expanded and the spacing arriving receiving coil are depended in impedance consumingly.Interchangeable detection method, as optics or infrared camera, radar or super sonic, owing to lacking impregnability, sensitivity to contamination and being queried for cost reason.
The apparatus for evaluating that DE 10 2,009 033 237 A1 describes the impedance for measuring inductance measuring and is connected with measurement mechanism.Preferably arrange multiple inductance measuring, it forms the layout of uniform two dimension, and this is arranged in the plane perpendicular to the principal direction in magnetic field and extends, and this magnetic field is generated by primary inductance.Therefore, respective impedance measurement device need not be realized for each inductance measuring, proposition, the group of each multiple inductance measuring is connected for overall impedance.
Known measurement mechanism position has higher requirements on dynamics field and in the temporal stability of assessment.High requirement on dynamics field and in the temporal stability of assessment can increase manufacturing cost, and infringement is for identifying the reliability of the detection system of conduction allosome.
Summary of the invention
The object of the invention is to, be provided for the explorer assembly of identification conduction allosome, Energy Transfer coil pack and detection system, it has lower requirement on dynamics field and in the temporal stability of assessment.
According to the present invention, this object realizes thus, namely be provided for the explorer assembly identifying conduction allosome in the region of energy transmitter coil, wherein, explorer assembly comprises the first multipole explorer that at least one has at least two reverse each other windings.
Due to the correlativity of the right inductance of coil, the application of multipole explorer has following feasible scheme substantially:
-multipole explorer can be used in detecting the magnetic field generated by means of other coil.These other coil can be monopole coil or be multi-pole coils equally.
-multipole explorer can be used in generating the magnetic field detected by means of other coil.These other coil can be monopole coil or be multi-pole coils equally.
-multipole explorer can be used in generating the magnetic field oneself detected by means of multipole explorer.The alternative method mentioned last time corresponds to known, described in beginning inductance measurement method, supplements according to feature of the present invention, and namely explorer has at least two reverse each other windings.
About Energy Transfer coil pack, realize thus according to object of the present invention, the energy transmission system being inductance provides Energy Transfer coil pack, and it comprises Energy Transfer coil in order to transmitting energy, wherein, Energy Transfer coil pack comprises according to explorer assembly of the present invention.Energy Transfer coil can be (position fix or movably) primary winding or (position fix or movably) output primary.
About detection system, realize thus according to object of the present invention, namely in the region of energy transmitter coil, provide detection system for identification conduction allosome, it comprises according to Energy Transfer coil pack of the present invention, and the detectable signal detected this preparation in the conduction allosome that will identify, it sends coil by means of Energy Transfer coil, explorer assembly or additional detection and encourages in conduction allosome.
Thus, explorer assembly comprises the first multipole explorer that at least one has at least two reverse each other windings, this balances the such impact on the magnetic field comprised by multipole explorer at least in part, and namely this impact is limited by the appearance of large-area object.Thus, with the angle of the terminal behavior of multipole explorer balance at least in part on the magnetic field comprised by multipole explorer, the impact that limited by the appearance of large-area object, this simplify the identification of the appearance of the assessment of the terminal behavior of multipole explorer and the object of one or more small size.In the ideal case, that limited by the appearance of large-area object, on the magnetic field comprised by multipole explorer impact is balanced as much as possible or fully.Then, the identification of the appearance of the assessment of the terminal behavior of multipole explorer and the object of one or more small size is simplified in an optimal manner.
Meet object, multipole explorer is designed to radar or Cartesian complications (kartesischer
).When multipole explorer is formed with a large amount of, winding reverse each other, there are the multipole fields with high spatial frequency, along with spacing increases, landed more rapidly than the ambipolar field for Energy Transfer under this spatial frequency.By means of the decoupling of such magnetic, the requirement on dynamics field and in the temporal stability of assessment can be reduced in consumingly.In addition can avoid, large-area, uniform object (as vehicle bottom) generates voltage in detection receiving coil.The vertical dimension of the sensitizing range of detection receiving coil can by selecting the spacing of the level of heterodromous wire to adjust.
Independent of this advantage had be, explorer assembly comprises at least another one multipole explorer, it arranges on the direction transverse to direction, home court relative to the first multipole explorer with staggering, and/or is arranged to rotate an angle around direction, described home court.Therefore, also can identify the appearance of the object of conduction, the object of this conduction had both been positioned partially in the region of the first pole of multipole explorer, was positioned partially at again in the region of the second pole of multipole explorer larger probability.Occur while being correspondingly applicable to the single objects of at least two conductions, wherein at least one object is arranged in the region of the first pole of multipole explorer, and object is arranged in the region of the second pole of multipole explorer.
The advantage that can have in addition is, the skew in the space between two multipole explorers is 1/4th cycles of multipole grid, and/or this angle is suitable angle.Therefore, the analytic ability including the space of the explorer assembly of two multipole explorers is maximum.
In addition can be suitable for, explorer assembly comprises the diversity receiving device of the detectable signal for generating combination, the detectable signal of this combination by the detectable signal of two multipole explorers derive and be phase-unsensitive.Therefore, it is possible to use the analytic ability with the space of the explorer assembly of two multipole explorers.
Can advantageously, diversity receiving device comprises rectifier, and wherein, the first rectifier input of rectifier is connected with the first multipole explorer, and the second rectifier input of rectifier is connected with the second multipole explorer.Therefore, the electric signal that can comprise two multipole explorers can be summarised as an electric signal by means of this measure, and by means of only assessing the assessment of an electric signal.
Another improvement project is, diversity receiving device comprises phase shifter, and wherein, the first input end of phase shifter is connected with the first multipole explorer, and the second input end of phase shifter is connected with the second multipole explorer.Also the electric signal that can comprise two multipole explorers can be summarised as an electric signal by means of this measure, and by means of only assessing the assessment of an electric signal.
A particularly preferred improvement project is, Energy Transfer coil is relative to multipole explorer magnetically ground connection.Therefore, it is possible to keep the appearance of the moveable element of the energy transmission system through Energy Transfer station without a moment's thought when assessing detectable signal or do not occur, this detectable signal is generated by multipole explorer.
In addition can meet object, detection system is provided for, and performs allosome detection and Energy Transfer in frequency division multiplexing and/or time division multiplex dividually.Therefore, it is possible to avoid the disturbing influence of the Energy Transfer to allosome detection.
Accompanying drawing explanation
Illustrate the present invention with reference to the accompanying drawings, wherein:
Fig. 1 schematically shows according to detection system of the present invention;
Fig. 2 schematically shows has the birds-eye view that detection sends the first embodiment of the explorer assembly of coil and detection receiving coil;
Fig. 3 schematically shows has the birds-eye view that detection sends the second embodiment of the explorer assembly of coil and detection receiving coil;
Fig. 4 schematically shows has the birds-eye view that detection sends the 3rd embodiment of the explorer assembly of coil and detection receiving coil;
Fig. 5 has the cross-sectional plane of the 3rd embodiment of magnetic field line during being shown schematically in and running detection system;
Fig. 6 schematically shows the cross-sectional plane of the 4th embodiment of the detection receiving coil with two self arranged superposed of plane earth;
Fig. 7 has the cross-sectional plane of the 4th embodiment of magnetic field line during being shown schematically in and running detection system;
Fig. 8 schematically shows the first circuit for generating the detectable signal of combination from the detectable signal generated by four detection receiving coils;
Fig. 9 schematically shows the second circuit for generating the detectable signal of combination from the detectable signal generated by two detection receiving coils.
Detailed description of the invention
The embodiment elaborated below illustrates preferred embodiment of the present invention.
Energy transmission system 10 shown in Fig. 1 shows the vehicle 90 above Energy Transfer station 11 that is motionless, inductance.In order to energy is transferred to vehicle 90 from fixing electric energy 12, Energy Transfer station 11 comprises: energy transmitter coil 14, and it is embedded in the iron yoke 16 be made up of ferrite; For generating the transmitter 20 of alternating-current voltage/AC voltage; With coupling capacitance 22.Energy transmitter coil 14 can be such as smooth coil.In order to the energy that received energy transmitter coil 14 provides by means of variable magnetic field 51, arrange energy acceptance coil 94 in vehicle bottom 92, it is embedded in the iron yoke 96 be made up of ferrite.Energy acceptance coil 94 can be such as smooth coil.In order to charge to Vehicular battery 95, energy acceptance coil 94 is connected on the charge circuit 99 that vehicle is connected via electric capacity 97 and rectifier 98.
Fig. 1 shows conduction allosome 80, and it is positioned on Energy Transfer station 11.The transformable magnetic field 51 provided by means of energy transmitter coil generates eddy current in conduction allosome 80.Due to eddy current, in conduction allosome 80, occur higher ohmic loss, this heated conduction allosome 80.Conduction allosome 80 (such as key chain) can be damaged due to heating, and this has damaged Energy Transfer station 11, and/or describes the danger (such as panic) of the personnel to contact conduction allosome 80.
In order to be identified in the appearance of the conduction allosome at Energy Transfer station 11 in region, Energy Transfer station 11 comprises detection system 30.Detection system 30 comprises multiple detection receiving coil 32,32 ' (see Fig. 6), sending module 12 and evaluation circuits 36.In addition, detection system 30 comprises detection transmission coil.In the embodiment shown in fig. 1, energy transmitter coil 14 is not only applied to the energy that radiation will be transmitted, and is applied as detection transmission coil.Alternatively, energy acceptance coil 94 can be applied as detection and send coil, wherein, provide detection to send signal in vehicle side subsequently.In addition the feasible scheme existed is, the magnetic pumping for conduction allosome 80 arranges one or more detection separated and sends coil, and it is not applied as energy transmitter coil 14 or energy acceptance coil 94.Have the electric current of small electric intensity of flow because only exist in detection receiving coil 32, detection receiving coil 32 just needs not be small resistor, thus thin metal wool on a printed circuit or printed wire are suitable to this.The assembly summarizing multiple detection receiving coil 32 or detection transmission coil is called as explorer assembly 34 below.The assembly summarizing explorer assembly 34 and energy transmitter coil 14 or energy acceptance coil 94 is called as Energy Transfer coil pack 13 below.
In the embodiment of figure 1, energy transmitter coil 14 is applied as detection and sends coil.Detection receiving coil 32 is embodied as multipole winding.To this, Fig. 2 to Fig. 5 shows the selection of possible version.Fig. 2 shows the version of gradometer, i.e. two and half windings 37,38, and it is together in series, and forms gradometer shape on the whole.It is often desired that the surveyed area of detection receiving coil 32 falls in vertical direction, the distance of process is substantially than short in gradometer version.
Therefore, preferably have multiple tortuous 40 or have a large amount of tortuous 40 version.Fig. 3 shows the first version to this, wherein, the winding circumference that detection sends coil 31 intersects with the complications 40 of detection receiving coil 32.Fig. 4 shows the second version, and wherein, the complications 40 of detection receiving coil 32 are intersected via its common diameter with energy transmitter coil 14 with leaving.
Fig. 5 shows the cross-sectional plane during running detection system 30 with the 3rd embodiment of iron yoke 16 and magnetic field line 61,62.The field wire 61 of dashed line form shows the field wire generated by means of energy transmitter coil 14.The field wire 62 of full lines shows the field wire generated by detection receiving coil 32.Can identify at this, energy transmitter coil 14 is only designed to a magnetic pole 71, detects receiving coil 32 simultaneously and is designed to multiple magnetic pole 72.Therefore detection receiving coil 32 is multi-pole coils.Owing to detecting the winding form of receiving coil 32, the single pole 72 of multi-pole coils has the coil of the intensity that is roughly the same, thus offsets the field component of pole 72 as much as possible with leaving via multiple complications.Can realize thus, the magnetic field 52 of detection receiving coil 32 upwards extends unlike the magnetic field 51 of energy transmitter coil 14 far awayly.Independent of this, also can therefore realize, in the face of detection receiving coil 32 ground connection of energy transmitter coil 14.
If be conceptually delivered into by electric current in detection receiving coil 32, so just draw magnetic field 52, it changes its direction on 63 in the horizontal direction periodically.Because correlativity, in time detecting receiving coil 32 and be applied as receiving coil, magnetic field 52 is equivalent to the sensivity of dipole moment, and this dipole moment induces in conduction allosome 80.Send the position of magnetic field 51 orientation perpendicular to energy in detection magnetic field 52, the situation that can occur is, the conduction allosome 80 (such as metal ball) of homogeneous does not induce detectable signal 54.In heterogeneous conduction allosome 80 (such as key or finger ring), sensivity obtains zero, it depends on the orientation of conduction allosome 80.
For this reason, propose the 4th embodiment that Fig. 6 is shown in cross-section, it has two detection receiving coils 32,32 '.Detection receiving coil 32,32 ' plane earth self is arranged overlappingly.By means of to detection receiving coil 32, the detectable signal 54 of 32 ', the assessment of 54 ' can realize, and also in the region at Energy Transfer station 11, identifies such conduction allosome 80, and this conduction allosome does not induce detectable signal 54 in independent detection receiving coil 32.In order to obtain detection receiving coil 32 in controlling field direction 63, the sensivity of whole homogeneous of 32 ', proposes, and arranges n detection receiving coil 32, by it approximately to stagger with being divided into the tortuous periods lambda of 2n part, wherein n be greater than 1 natural number.
Fig. 6 and Fig. 7 shows running during detection system 30, n equal two, there is magnetic field line 62, the cross-sectional plane of the 4th embodiment of 62 '.
Utilize detectable signal 54,54 ' with the simple addition of independent detection receiving coil 32,32 ', in controlling field direction 63, do not realizing the sensivity of homogeneous of detection system 30, but occurring new zero.Fig. 8 shows for from by four detectable signals 54,54 ', 54 of generating of detection receiving coils 32 ", 54 " ' in generate the first circuit of the detectable signal 55 of combination.At this, the rectifier 102,102 ', 102 for respective ", 102 " each in ' provide detectable signal 54,54 ', 54 ", 54 " ', this rectifier is the signal that adder 104 provides each rectification.Adder 104 is because which form the addition results of the detectable signal 55 illustrating combination.Utilize this circuit 100, achieving the sensivity of homogeneous of detection system 30, thus can detect each conduction allosome 80 in controlling field direction 63, wherein, detection sends coil 31 and has induced eddy current.The basic design of circuit 100 is applied as the natural number being greater than 1 substantially.
Fig. 9 schematically shows the second circuit 200 for generating the detectable signal 55 of combination from the detectable signal 54,54 ' generated by two detection receiving coils 32,32 '.To this, the detectable signal 54,54 ' of two detection receiving coils 32,32 ' flocks together by means of the phase shifter 202 of 90 °, thus (mutual) magnetic field 52 of detection receiving coil 32,32 ' is designed to circumference or elliptically polarized rotation field.
The detectable signal 55 of combination can compare with threshold.In time exceeding threshold, this information can be used to this, transmitter 20 cuts out, to avoid eddy current to appear at being arranged in the conduction allosome 80 on Energy Transfer station 11 by this way.
So far described detection system 30 is applied also for encouraging detectable signal 54 by means of conduction allosome 80, the home court 51 of the energy transmitter coil 14 of 54, and the system of multipole explorer 32,32 ' of application for receiving.When running energy transmission system 10 on opposite effect direction, so that when being transferred to fixing network 12 from vehicle 90 by energy, the detection of allosome 80 also can realize in an identical manner.
When utilizing detection receiving coil 32 construct lower powered, transformable magnetic field 52 and utilize energy transmitter coil 12 receptor control signal, what independently also can realize therewith is, be this detection method aspect, will the role exchange of winding 12 and detection receiving coil 32 be sent.To this, such as can run detection system 30 with the frequency different from the frequency of Energy Transfer, or alternately run detection system with Energy Transfer in time.
Claims (10)
1. the explorer assembly (34) for identification conduction allosome (80) in the region of energy transmitter coil (14), it is characterized in that, described explorer assembly (34) comprises at least one and has at least two reverse each other windings (35,36) the first multipole explorer (31,32).
2. explorer assembly (34) according to claim 1, it is characterized in that, multipole explorer (31,32) radial or Cartesian complications (40) are designed to, and/or it is characterized in that, described explorer assembly (34) comprises at least one other multipole explorer (32 '), described multipole explorer is being arranged transverse on the direction (63) of direction, home court (64) relative to described first multipole explorer (32) with staggering, and/or arranges with rotating an angle around direction, described home court (64).
3. explorer assembly (34) according to claim 2, it is characterized in that, the skew (a) in the space between two described multipole explorers (32,32 ') is 1/4th cycles (Λ/4) of multipole grid (Λ) or described angle in side direction.
4. the explorer assembly (34) according to Claims 2 or 3, it is characterized in that, described explorer assembly (34) comprises the diversity receiving device (100 of the detectable signal (55) for generating combination, 200), the detectable signal of described combination is by two multipole explorers (32,32 ') detectable signal (54,54 ') is derived and is phase-unsensitive.
5. explorer assembly (34) according to claim 4, it is characterized in that, described diversity receiving device (100) comprises rectifier (102,102 ', 102 "; 102 " '), wherein, first rectifier input (54) of described rectifier (102) is connected with described first multipole explorer (32), and the second rectifier input (54 ') of described rectifier (102 ') is connected with described second multipole explorer (32 ').
6. the explorer assembly (34) according to claim 4 or 5, it is characterized in that, described diversity receiving device (200) comprises phase shifter (202), wherein, the first input end (201) of described phase shifter (202) is connected with described first multipole explorer (32), and the second input end (201 ') of described phase shifter (202) is connected with described second multipole explorer (32 ').
7. the Energy Transfer coil pack (13) of the energy transmission system for inductance (10), wherein, described Energy Transfer coil pack (13) comprises Energy Transfer coil (14 in order to transmitting energy, 94), it is characterized in that, described Energy Transfer coil pack (13) comprises according to the explorer assembly (34) described in any one in claim 1 to 6.
8. Energy Transfer coil pack (13) according to claim 7, is characterized in that, described Energy Transfer coil (14) is relative to multipole explorer (32) magnetically ground connection.
9. the detection system (30) for identification conduction allosome (80) in the region of energy transmitter coil (14), it is characterized in that, described detection system (30) comprises the Energy Transfer coil pack (13) according to claim 7 or 8, and described detection system is provided for the detectable signal (54 detected in the described conduction allosome (80) that will identify, 54 '), described detectable signal in described conduction allosome (80) by means of described Energy Transfer coil (14), explorer assembly (34) or additional detection send coil (31) and encourage.
10. detection system according to claim 9 (30), is characterized in that, described detection system (30) is provided for, and performs the detection of described allosome and described Energy Transfer in frequency division multiplexing and/or time division multiplex dividually.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2012/061803 WO2013189530A1 (en) | 2012-06-20 | 2012-06-20 | Detection coil assembly, energy transfer coil assembly and detection system for detecting electrically conductive foreign bodies |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104395131A true CN104395131A (en) | 2015-03-04 |
| CN104395131B CN104395131B (en) | 2016-11-30 |
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| WO2013189530A1 (en) | 2013-12-27 |
| DE112012006570A5 (en) | 2015-03-12 |
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