WO2020148320A1 - Système de bobines comprenant une pluralité de paires de bobines disposées dans un plan sur celui-ci et dispositif comprenant un tel système de bobines - Google Patents

Système de bobines comprenant une pluralité de paires de bobines disposées dans un plan sur celui-ci et dispositif comprenant un tel système de bobines Download PDF

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Publication number
WO2020148320A1
WO2020148320A1 PCT/EP2020/050884 EP2020050884W WO2020148320A1 WO 2020148320 A1 WO2020148320 A1 WO 2020148320A1 EP 2020050884 W EP2020050884 W EP 2020050884W WO 2020148320 A1 WO2020148320 A1 WO 2020148320A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
coils
pairs
pair
coil arrangement
Prior art date
Application number
PCT/EP2020/050884
Other languages
German (de)
English (en)
Inventor
Christoph Haggenmiller
Original Assignee
Vitesco Technologies GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vitesco Technologies GmbH filed Critical Vitesco Technologies GmbH
Publication of WO2020148320A1 publication Critical patent/WO2020148320A1/fr

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Classifications

    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—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—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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
    • 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

  • Coil arrangement with a plurality of coil pairs arranged thereon in one plane and device with such a coil arrangement
  • the invention relates to a coil arrangement with a plurality of coil pairs arranged in one plane, the individual coils of which are each formed and connected to one another in such a way that the currents induced in them by a magnetic field are directed in opposite directions and are of equal size.
  • the invention also relates to a device for inductive transmission of energy with a primary and a secondary coil, between which such a coil arrangement is arranged.
  • Such a coil arrangement and such a device are known from US 2013/0169062 A1.
  • a pair of coils consisting of two semi-circular single coils made of a wire are described, in which the individual coils are twisted against each other, so that the currents caused by an urgent magnetic field are opposite and of equal size, i.e. they cancel each other out.
  • a homogeneous, interference-free magnetic field which is generated by a primary coil of a device for inductive energy transmission and which penetrates the individual coils, does not generate any voltage at their wire ends.
  • US 2013/0169062 A1 discloses a circular coil arrangement with pairs of coils, which is designed with individual coils formed from circular segments, which are also produced with only one wire.
  • the coil pairs are formed symmetrically and oriented in such a way to one another are arranged so that a magnetically effective object, which is located at the point of symmetry of a coil pair, cancels the equality of the currents of at least one adjacent coil pair.
  • the individual coils all have the same shape and size. This ensures that in the event that there is no object in the area of the coil arrangement, no induced voltage arises at the connections of the coil pairs.
  • the lines of the individual coils of a pair of coils are guided in the form of an eight.
  • this can be approximately circular, it preferably has the shape of a square or a rhombus or any other shape in which pairs of coils are arranged next to one another can be created without creating too many gaps in which a magnetic field is not detected.
  • the axes passing through the loops and the loop connection point of an eight are from two adjacent pairs of coils, their pairs
  • Loop connection points are separated by an eight loop, perpendicular to each other.
  • the affected axis is the one that runs through the two eight loops and the loop connection point, i.e. usually the point of symmetry. This axis is usually also an axis of symmetry of a pair of coils.
  • This orientation towards one another ensures that an object that lies on the point of symmetry or the axis of symmetry of one pair of coils and therefore is not detected by this pair of coils is in any case recognized by the pair of coils closest to it.
  • the coil arrangement is formed on a coil carrier.
  • a coil carrier This can be, for example, a film or a printed circuit board.
  • the pair of coils can be printed on the coil carrier.
  • a Spulenan arrangement according to the invention is arranged between the primary and the secondary coil.
  • a coil arrangement according to the invention can thus advantageously be used in such a device for inductive transmission of energy for the detection of magnetically active objects, for example metals such as coins, since these should lead to a shutdown of the energy transmission due to heating due to eddy currents and thus an increased risk of fire .
  • the coil arrangement can be arranged in a simple manner on the primary coil.
  • FIG. 1 shows a first embodiment of a pair of coils according to the prior art
  • FIG. 3 shows a first coil arrangement according to the invention with coil pairs according to FIG. 2
  • FIGS. 4 shows a second coil arrangement according to the invention with coil pairs according to FIGS. 2 and
  • Fig. 5 shows a device for the inductive transmission of energy with a
  • Fig. 1 shows a pair of coils 1, which is made of a conductor 2.
  • the conductor 2 can be a wire or a conductor track printed on a foil or a printed circuit board or applied in some other way.
  • a first individual coil is produced by first routing the conductor 2 in a first section a. Thereafter, it is guided counterclockwise in a second section b in a semicircle, in order to then be guided almost parallel again to section a, but crossing it in a third section c. Finally, it is guided clockwise in a fourth section d in a semicircle.
  • the result is an approximately elliptical or circular double coil which has two loops a, b and c, d, which are wound like an eight and lie next to one another in one plane.
  • FIG. 2 Another embodiment of a pair of coils with the properties described is shown in Fig. 2.
  • the pair of coils there 10 is formed with a conductor 1 1, which here is initially guided in a first feed section a, in order to then bend downward to the right at an angle of approximately 45 ° and then counterclockwise in a square b back to the first break point to be guided and to form a first single coil.
  • the conductor 1 1 is then just continued at the break point, in order then to lead back clockwise in a further square c back to the break point and to be guided therefrom parallel to the first feed section a in a second feed section d.
  • a planar pair of coils 10 is formed, in which currents corresponding to the arrows 12 and 13 form in a ho mogeneous magnetic field which penetrates the individual coils and cancel each other out.
  • many pairs of coils 10 can be formed next to one another without leaving larger areas which are not covered by a coil.
  • the pair of coils 10 of FIG. 2 has a point of symmetry 14 which coincides with the break point of the conductor 11 and there is an axis 15 which runs through the eight loops and the point of symmetry 14 and forms an axis of symmetry.
  • the magnetic field in both individual coils is influenced in the same way, for example amplified, but as a result the currents in both individual coils of the coil pair 10 change in the same way and therefore no change in voltage or current can be detected at the coil connections.
  • the coil pairs can be adapted to a non-uniform magnetic field by changing the size of one of the individual coils, by making the individual coil correspondingly larger in the case of a weaker magnetic field in order to achieve the same overall flux.
  • a rhombus can also be selected, as a result of which a good area coverage can also be achieved with a coil arrangement with a plurality of coil pairs.
  • FIG. 3 now shows a coil arrangement according to the invention using the example of coil pairs 20a, 20b corresponding to the shape of FIG. 2, that is to say an eight with square loops.
  • a large number of such coil pairs 20a, 20b are nested, preferably formed on a coil carrier 21.
  • the coil former 21 can e.g. be a foil or a circuit board.
  • the coil pairs can be attached to it as wire coils, e.g. glued or e.g. be printed as a paste.
  • a first number of coil pairs 20a are arranged on the coil carrier 21 such that their axes are inclined 45 ° counterclockwise from the vertical and parallel rows are formed with these coil pairs 20a, with rows lying in a row Coil pairs 20a adjoin one another with the coil crests 23, 24 lying on one axis and the coil pairs 20a of the row adjacent thereto are offset by a single coil and adjoin one another with their coil crests 25, 26 which are most distant from their axis.
  • a point of symmetry 14 of a pair of coils 20a of the first number of pairs of coils is spaced apart from a point of symmetry 14 of a pair of coils 20b of the second number of pairs of coils by a single coil and vice versa.
  • the symmetry points of the coil pairs 20a of the first number of thus never fall Coil pairs with those of the coil pairs 20b of the second number of coils pair together.
  • FIG. 4 shows a similar arrangement of the coil pairs as in FIG. 3, with all coil pairs being rotated here by 45 ° with respect to the arrangement according to FIG. 3.
  • the coil pairs are not designated in more detail because they correspond to those in FIG. 3.
  • FIG. 5 shows a device for inductive transmission of energy with a primary coil 31 on a base plate 30 and a secondary coil 34 on a vehicle plate 33, in which a coil arrangement according to the invention with coil pairs 20a, between the primary and the secondary coil 31m 34, 20b is arranged on a coil carrier 21, for example according to FIG. 3 or 4.
  • the coil pairs 20a, 20b are penetrated by a magnetic field 35, which is generated by the primary coil 31 in example. It would also be possible to generate the magnetic field 35 by means of the secondary coil 34 in order to recognize magnetically effective, in particular metallic, foreign objects.
  • an object can also be detected when positioned on a point of symmetry or a line of symmetry, although coil pairs are used in which, in the case of a homogeneous magnetic field generated by the primary coil, no voltage at their connections is detectable without interference from a foreign object.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

Système de bobines comprenant une pluralité de paires de bobines disposées dans un plan sur celui-ci et dispositif comprenant un tel système de bobines L'invention concerne un système de bobines comprenant une pluralité de paires de bobines (1; 10; 20a, 20b) disposées dans un plan, dont les bobines individuelles sont conçues et reliées les unes aux autres de façon que les courants (3, 4; 12 13) induits dans ces bobines par un champ magnétique sont orientés en sens opposés et présentent la même valeur, les paires de bobines (1; 10; 20a, 20b) étant conçues de façon symétrique par rapport à un point et étant orientées les unes par rapport aux autres de telle façon qu'un objet magnétiquement actif (22), qui se trouve sur le point de symétrie (14) d'une paire de bobines, annule l'égalité des courants (3, 4; 12 13) d'au moins une paire de bobines voisines (1; 10; 20a, 20b).
PCT/EP2020/050884 2019-01-16 2020-01-15 Système de bobines comprenant une pluralité de paires de bobines disposées dans un plan sur celui-ci et dispositif comprenant un tel système de bobines WO2020148320A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019200436.9 2019-01-16
DE102019200436.9A DE102019200436A1 (de) 2019-01-16 2019-01-16 Spulenanordnung mit einer Mehrzahl von darauf in einer Ebene angeordneten Spulenpaaren und Vorrichtung mit einer solchen Spulenanordnung

Publications (1)

Publication Number Publication Date
WO2020148320A1 true WO2020148320A1 (fr) 2020-07-23

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PCT/EP2020/050884 WO2020148320A1 (fr) 2019-01-16 2020-01-15 Système de bobines comprenant une pluralité de paires de bobines disposées dans un plan sur celui-ci et dispositif comprenant un tel système de bobines

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WO (1) WO2020148320A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112635179B (zh) * 2020-12-28 2022-05-03 西安电掣风云智能科技有限公司 一种无线充电装置
DE102023002434A1 (de) 2023-06-16 2023-07-27 Mercedes-Benz Group AG Strahlungsheizung und Verfahren zu deren Betrieb

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130169062A1 (en) 2011-05-27 2013-07-04 Nissan Motor Co., Ltd. Contactless electricity supply device
US20140111019A1 (en) * 2012-10-19 2014-04-24 Witricity Corporation Foreign object detection in wireless energy transfer systems
US20150015199A1 (en) * 2012-03-30 2015-01-15 Bayerische Motoren Werke Aktiengesellschaft Apparatus for Inductive Power Transmission
US20160238731A1 (en) * 2015-02-17 2016-08-18 Qualcomm Incorporated Sense coil geometries with improved sensitivity for metallic object detection in a predetermined space

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212947A1 (de) * 2015-07-10 2017-01-12 Siemens Aktiengesellschaft Vorrichtung zum Überprüfen eines Vorhandenseins eines elektrisch leitfähigen Körpers und die Vorrichtung beinhaltende Ladeanordnung
DE102016219484A1 (de) * 2016-10-07 2018-04-12 Bayerische Motoren Werke Aktiengesellschaft Maschenwerk und Vorrichtung zur Objekterkennung in einem Magnetfeld, Verfahren zur Herstellung des Maschenwerks und induktive Ladeeinheit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130169062A1 (en) 2011-05-27 2013-07-04 Nissan Motor Co., Ltd. Contactless electricity supply device
US20150015199A1 (en) * 2012-03-30 2015-01-15 Bayerische Motoren Werke Aktiengesellschaft Apparatus for Inductive Power Transmission
US20140111019A1 (en) * 2012-10-19 2014-04-24 Witricity Corporation Foreign object detection in wireless energy transfer systems
US20160238731A1 (en) * 2015-02-17 2016-08-18 Qualcomm Incorporated Sense coil geometries with improved sensitivity for metallic object detection in a predetermined space

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