EP3319174A1 - Magnetische antriebseinheit - Google Patents

Magnetische antriebseinheit Download PDF

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Publication number
EP3319174A1
EP3319174A1 EP16002348.7A EP16002348A EP3319174A1 EP 3319174 A1 EP3319174 A1 EP 3319174A1 EP 16002348 A EP16002348 A EP 16002348A EP 3319174 A1 EP3319174 A1 EP 3319174A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
power unit
core
magnetic power
magnetic core
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP16002348.7A
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English (en)
French (fr)
Other versions
EP3319174B1 (de
Inventor
Antonio Rojas Cuevas
Francisco Ezequiel NAVARRO PÉREZ
Jorge RODRÍGUEZ
Marina ARCOS
Patrick Fouassier
Raquel RODRÍGUEZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Premo SA
Original Assignee
Premo SA
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Filing date
Publication date
Priority to ES16002348T priority Critical patent/ES2832423T3/es
Application filed by Premo SA filed Critical Premo SA
Priority to EP16002348.7A priority patent/EP3319174B1/de
Priority to CN201780068347.1A priority patent/CN110192256B/zh
Priority to PCT/EP2017/078203 priority patent/WO2018083249A1/en
Priority to KR1020197016048A priority patent/KR102486366B1/ko
Priority to JP2019522695A priority patent/JP7277362B2/ja
Priority to US16/347,442 priority patent/US11495394B2/en
Publication of EP3319174A1 publication Critical patent/EP3319174A1/de
Application granted granted Critical
Publication of EP3319174B1 publication Critical patent/EP3319174B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/18—Liquid cooling by evaporating liquids

Definitions

  • the present invention refers to a reduced size integrated magnetic power unit comprising a magnetic core generally including a first, a second and a third winding channels respectively arranged around a first, a second and a third intersecting axis orthogonal to each other, each of said winding channels intended for receiving at least one coil wound around the magnetic core each coil having at least one turn.
  • the proposed magnetic power unit is particularly adapted to be used for example as a transformer or inductor in the electrical power field, and suitable for operating a high power electrical device, especially usable in the field of hybrid and electrical vehicles (HEVs) that nowadays is growing quite fast.
  • HEVs hybrid and electrical vehicles
  • the new models of electrical vehicle require more and more power electronics inside, not only for the electrical motor supply with speed and torque control, but also for high-voltage (HV) battery chargers and stable incar continuous low-voltage (LV) power supplies.
  • references to geometric position such as parallel, perpendicular, tangent, etc. allow deviations up to ⁇ 5° from the theoretical position defined by this nomenclature. It will also be understood that any range of values given may not be optimal in extreme values and may require adaptations of the invention to these extreme values are applicable, such adaptations being within reach of a skilled person.
  • US 4210859 discloses an inductive device that may be utilized as an inductor or transformer in a variety of applications, comprising a magnetic core and orthogonal windings for producing two or three substantially orthogonal magnetic fields at all point within the core.
  • Figs. 16 and 17 of this patent document disclose embodiments for inductive device structures which accommodate several orthogonal windings on the same core.
  • this disclosure when detailing a triaxial inductive device does not solve at least two problems related to the construction of the core and the self-heating of the inductor, when this is or is associated to a transformer, the last problem making the proposal practically unfeasible, mainly when operating under high power.
  • the invention solves the above problems by a special construction of the core and by including associated means for an effective heat dissipation. In this way, it is obtained a highly magnetic power unit up to 50% smaller than the average size of other known magnetic units and with a power density increasing up to 200W/ cm 3...
  • the teaching of this invention provides a magnetic unit that can be implemented in one or more transformers or one or more inductors and/or combinations of magnetically coupled or uncoupled transformers and inductors.
  • the invention provides a highly compact magnetic power unit comprising a magnetic core that includes a first, a second and a third winding channels respectively arranged around a first, a second and a third crossing axis orthogonal to each other, each of said winding channels being intended for receiving at least one coil wound around the magnetic core, each coil having at least one turn.
  • the said first, second and third crossing axis define orthogonal planes providing eight octants, each including a protrusion defining a protruding spacer said protruding spacers being spaced to each other by said winding channels.
  • Fig. 17 of US 4210859 discloses such a core in a single piece.
  • the magnetic core is formed by at least two different partial magnetic cores assembled together by an attachment as a composed core in a layered configuration, including two side partial magnetic cores each including four protruding spacers and the magnetic core includes a through hole or cavity associated to a device for heat dissipation housed inside.
  • the through hole for heat dissipation is perpendicular to one of said first, second or third planes, and extends through at least two partial magnetic cores.
  • the device for heat dissipation include a non-electrical conductor, magnetic or non-magnetic, paramagnetic or diamagnetic heat pipe arranged in said trough hole and communicated with a heat dissipation plate.
  • the heat pipe is a hollow pipe filled with a fluid with a low boiling point (as per a technique known in the art).
  • the composed core includes at least one additional central partial magnetic core lacking of protruding spacers interposed between said two side partial magnetic cores, i.e. the core is made of three pieces.
  • the partial magnetic cores are assembled together through a mechanical joint attachment using auxiliary elements or alternatively they are assembled together through an adhesive.
  • the composed core has a general geometric shape selected among a rectangular parallelepiped, cube or sphere.
  • each flux closing cover is in contact with two or four flux closing covers perpendiculars to it, through perimeter faces. Also in an embodiment, the cited perimeter faces are bevelled. Furthermore, each flux closing cover includes four notches providing winding connection windows when the flux closing covers are in contact with the protruding spacers.
  • the core is a rectangular parallelepiped and the flux closing covers are constituted by two or three pairs of flux closing covers, wherein each pair of covers is arranged at two opposite sides of the composed magnetic core, each cover being in contact with four different protruding spacers.
  • the composed magnetic core has a general geometric shape of a sphere and the flux closing covers are constituted by at least two opposed spherical caps, and each flux closing cover is in contact with four different protruding spacers.
  • the composed magnetic core here disclosed and/or the flux closing covers are made of a material selected among ferrite, ferromagnetic material, or a PBM (polymer-bonded soft magnetic material) injectable material.
  • FIG. 1 shows a magnetic power unit 100 according to a particular embodiment of the present invention.
  • the magnetic power unit 100 comprises a magnetic core 10 including a first, a second and a third winding channel 2a, 2b, 2c, respectively arranged around a first, a second and a third axis A-A, B-B, C-C orthogonal to each other.
  • Each winding channel 2a, 2b, 2c is intended for receiving at least one coil, having at least one turn, wound around the magnetic core 10.
  • the magnetic power unit 100 provides different working configurations that will be discussed with greater details in the following description.
  • the three axes are pairwise perpendicular and define a first, a second and a third plane in which the winding channels are located respectively.
  • the first winding channel 2a that is arranged around the first axis A-A, is located in the first plane that is defined by the other two axis B-B and C-C (i.e. the first plane is the plane orthogonal to the first axis A-A and on which the axes B-B and C-C lie).
  • the three planes define eight octants, each including a protrusion defining a protruding spacer 20.
  • the eight protruding spacers 20 are spaced to each other by the winding channels 2a, 2b, 2c.
  • the magnetic core 10 is formed by a plurality of different partial magnetic cores 11, 12 made of a magnetic material selected among ferrite, ferromagnetic material, or a Polymer Bonded Soft Magnetic (PBSM) injectable material.
  • the partial magnetic cores are assembled together by an attachment (for example by an adhesive) forming a composed core 10 in a layered configuration (i.e. the partial magnetic cores are stacked to each other).
  • the magnetic core 10 is preferably formed by three different partial magnetic cores comprising a central partial magnetic core 11 and two side partial magnetic cores 12, wherein each of the two side partial magnetic cores 12 includes four protruding spacers 20.
  • the central partial magnetic core 11 is interposed between the two-side partial magnetic cores 12 and lacks of protruding spacers 20.
  • the two-side partial magnetic cores 12 have a substantially flat surface configured to be attached to the central partial magnetic core 11 by means of an adhesive (not shown and having a thickness negligible with respect to the dimensions of the magnetic core 10).
  • the composed core 10, when assembled, has a general geometric shape of a rectangular parallelepiped or a cube.
  • each protruding spacer 20 has a general geometric shape substantially cubic shape.
  • An alternative embodiment can provide that the composed core 10, when assembled, has a general geometric shape of a sphere.
  • each protruding spacer 20 has a general geometric shape comprising an external surface rounded.
  • the magnetic core 10 is formed by only two partial magnetic cores each having the protruding spacers 20 (for example two half partial magnetic cores having the same shape and configured to be assembled symmetrically), or by more than three partial magnetic cores.
  • the magnetic core 10 is preferably formed by two side partial magnetic cores 12, each including four protruding spacers 20, and a plurality of central partial magnetic cores 11 lacking of protruding spacers 20 stacked to each other.
  • the magnetic core 10 is formed by at least two different partial magnetic cores assembled together by an attachment and comprising two side partial magnetic cores 12, each having four protruding spacers 20.
  • the magnetic core 10 includes at least one additional central partial magnetic core 11 lacking of protruding spacers 20 interposed between the two-side partial magnetic cores 12.
  • the magnetic core 10 includes a through hole 30 associated to a device for heat dissipation 50.
  • the through hole 30 is preferably perpendicular to one of the first, second or third planes, more preferably the through hole is substantially coaxial with one of the first, second or third axis.
  • the through hole 30 extends through the two-partial side magnetic cores 12 and consequently through the central partial magnetic core 11.
  • the device for heat dissipation 50 includes a heat dissipation pipe 51 made of a thermal conductor material, preferably made of a non-electrical conductor material.
  • the heat dissipation pipe 51 is arranged in the trough hole 30 and connected to a heat dissipation plate 52, made preferably of the same material of which the dissipation pipe is made. More preferably, the heat dissipation pipe 51 is a hollow pipe filled with a fluid.
  • the dissipation pipe 51 is made of magnetic or non-magnetic material, or made of paramagnetic or diamagnetic material.
  • the magnetic power unit 100 is preferably surrounded by flux closing magnetic covers 40 preferably made of a material selected among ferrite, ferromagnetic material, or a Polymer Bonded Soft Magnetic (PBSM) injectable material, more preferably the same material of which the composed magnetic core 10 is made.
  • the through hole 30 extends also through the flux closing magnetic covers 40, so that the dissipation pipe 51 can pass through the composed magnetic core 10 and the heat dissipation plate can be arranged externally to the flux closing magnetic covers 40.
  • the flux closing covers 40 are preferably constituted by three pairs of flux closing covers 40, arranged at the opposite sides of the magnetic core 10. With respect to figure 3 , each cover 40 is in contact (for example attached by means of adhesive) with four protruding members 20 and is spaced from the central partial magnetic core 11.
  • each flux closing cover 40 is in contact with other four flux closing covers 40 perpendiculars to it, through four perimeter faces 41.
  • the perimeter faces 41 are advantageously bevelled i.e. tapered towards the magnetic core 10 with an inclined coupling surface forming a truncated pyramid having preferably with a surface inclined of about 45°.
  • covers 40 can be all realized with the same shape.
  • the composed magnetic core 10 has a general geometric shape of a sphere.
  • the flux closing covers 40 are constituted by at least two opposed spherical caps, and each flux closing cover is in contact (for example attached by means of adhesive) with four different protruding spacers 20.
  • Figure 4 shows three coils 70a, 70b, 70c wound around the three winding channels 2a, 2b, 2c of the composed magnetic core 10 shown in figure 1 , respectively.
  • the magnetic power unit 100 provides a transformer comprising three coils 70a, 70b, 70c wound around the three-respective axis A-A, B-B, C-C orthogonal to each other, but as mentioned above, depending on the number and on the arrangement of one or more coils wound around the composed magnetic core 10, the magnetic power unit 100 may provide different device configurations.
  • the through hole 30 is not shown for a better clarity of the arrangement of the three coils 70a, 70b, 70c. It is intended that the turns of the coils 70b and 70c wound around the winding channels 2b and 2c are arranged for avoiding the hole 30 for allowing the passage of the heat dissipation pipe 51.
  • the magnetic power unit 100 is a transformer having two coils wound around two respective winding channels (i.e. arranged around two respective axes) and the third winding channel without coil. Furthermore, a third coil wound around the third winding channel may provide a choke for the transformer formed by the two coils wound around the other two winding channel.
  • the magnetic power unit 100 is a choke comprising three coils wound in the three-respective winding channel, or comprising two coils wound around two respective winding channels.
  • the composed magnetic core 10 is formed by three different partial magnetic cores comprising a central partial magnetic core 11 and two side partial magnetic cores 12, wherein each of the two-side partial magnetic cores 12 includes four protruding spacers 20.
  • the central partial magnetic core 11 is interposed between the two-side partial magnetic cores 12 and lacks of protruding spacers 20.
  • this embodiment provides that the two-side partial magnetic cores 12 have a substantially flat surface configured to be arrange toward the outside of the magnetic core 10 when it is assembled.
  • each coupling member 60a, 60b comprises a first wall 61 and two second walls 62 extending from two opposite sides of the first wall 61 towards an orthogonal direction with respect to the first wall.
  • the ends of the two second walls 62 of a coupling member 60a, 60b are configured to snap with the first wall 61 of the other coupling member 60b, 60a.
  • the central partial magnetic core 11 is surrounded by six walls of the auxiliary elements 60 (the first walls and second walls of the coupling members 60a, 60b).
  • the first wall 61 of each coupling member 60a, 60b is provided with an opening 63, for passing the heat dissipation pipe 51 through the hole 30, and a sleeve 64 arranged around the opening 63.
  • the end 65 of sleeves 64 are configured to snap with the flat surface of the side partial magnetic cores 12 when the composed magnetic core 10 is assembled.
  • each coupling member 60a, 60b are provided with a plurality of notches configured to leave open a plurality of passages for allow a direct contact between the central partial magnetic core 10 and the protruding spacers 20 of the side partial magnetic cores 12.
  • each protruding spacer 20 is preferably provided with a seat having a shape complementary to the respective corner.
  • the magnetic power unit 100 is preferably surrounded by flux closing magnetic covers 40 preferably made of a material selected among ferrite, ferromagnetic material, or a Polymer Bonded Soft Magnetic (PBSM) injectable material, more preferably the same material of which the composed magnetic core 10 is made.
  • flux closing magnetic covers 40 preferably made of a material selected among ferrite, ferromagnetic material, or a Polymer Bonded Soft Magnetic (PBSM) injectable material, more preferably the same material of which the composed magnetic core 10 is made.
  • PBSM Polymer Bonded Soft Magnetic
  • the flux closing covers 40 are preferably constituted by two pairs of flux closing covers 40, arranged at the opposite sides of the magnetic core 10 and orthogonally with respect to the side partial magnetic covers 12. Each cover 40 is in contact (for example attached by means of adhesive) with four protruding members 20 and is spaced from the central partial magnetic core 11.
  • each flux closing cover 40 includes four notches 42, each notch 42 for providing winding connection windows when flux closing covers 40 are in contact with the protruding spacers 20.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
EP16002348.7A 2016-11-04 2016-11-04 Magnetische antriebseinheit Active EP3319174B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP16002348.7A EP3319174B1 (de) 2016-11-04 2016-11-04 Magnetische antriebseinheit
ES16002348T ES2832423T3 (es) 2016-11-04 2016-11-04 Unidad de potencia magnética
PCT/EP2017/078203 WO2018083249A1 (en) 2016-11-04 2017-11-03 A compact magnetic power unit for a power electronics system
KR1020197016048A KR102486366B1 (ko) 2016-11-04 2017-11-03 파워 일렉트로닉스 시스템용 컴팩트형 자력 유닛
CN201780068347.1A CN110192256B (zh) 2016-11-04 2017-11-03 用于功率电子系统的紧凑型磁性功率单元
JP2019522695A JP7277362B2 (ja) 2016-11-04 2017-11-03 パワーエレクトロニクスシステム用小型磁気パワーユニット
US16/347,442 US11495394B2 (en) 2016-11-04 2017-11-03 Compact magnetic power unit for a power electronics system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16002348.7A EP3319174B1 (de) 2016-11-04 2016-11-04 Magnetische antriebseinheit

Publications (2)

Publication Number Publication Date
EP3319174A1 true EP3319174A1 (de) 2018-05-09
EP3319174B1 EP3319174B1 (de) 2020-08-12

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Family Applications (1)

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EP16002348.7A Active EP3319174B1 (de) 2016-11-04 2016-11-04 Magnetische antriebseinheit

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EP (1) EP3319174B1 (de)
ES (1) ES2832423T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4060693A1 (de) 2021-03-17 2022-09-21 Premo, S.A. Flüssigkeitsgekühlte spule für eine drahtgewickelte magnetische vorrichtung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210859A (en) 1978-04-18 1980-07-01 Technion Research & Development Foundation Ltd. Inductive device having orthogonal windings
EP1315178A1 (de) * 2001-11-27 2003-05-28 ABB Research Ltd. Dreidimensionale Wicklungsanordnung
EP1526606A1 (de) * 2003-10-20 2005-04-27 Toko Kabushiki Kaisha Drei-Achsen-Antennenspule
WO2005045992A1 (de) * 2003-11-03 2005-05-19 Neosid Pemetzrieder Gmbh & Co.Kg Induktives miniatur-bauelement, insbesondere antenne
JP2005236098A (ja) * 2004-02-20 2005-09-02 Toko Inc フィルタ用コイル
EP2315220A1 (de) * 2008-08-22 2011-04-27 Sumitomo Electric Industries, Ltd. Reaktorkomponente und reaktor
EP2360704A1 (de) * 2010-02-15 2011-08-24 Sumida Corporation Antennenspule
US20150310976A1 (en) * 2014-04-25 2015-10-29 Delta Electronics (Shanghai) Co., Ltd. Magnetic element

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210859A (en) 1978-04-18 1980-07-01 Technion Research & Development Foundation Ltd. Inductive device having orthogonal windings
EP1315178A1 (de) * 2001-11-27 2003-05-28 ABB Research Ltd. Dreidimensionale Wicklungsanordnung
EP1526606A1 (de) * 2003-10-20 2005-04-27 Toko Kabushiki Kaisha Drei-Achsen-Antennenspule
WO2005045992A1 (de) * 2003-11-03 2005-05-19 Neosid Pemetzrieder Gmbh & Co.Kg Induktives miniatur-bauelement, insbesondere antenne
JP2005236098A (ja) * 2004-02-20 2005-09-02 Toko Inc フィルタ用コイル
EP2315220A1 (de) * 2008-08-22 2011-04-27 Sumitomo Electric Industries, Ltd. Reaktorkomponente und reaktor
EP2360704A1 (de) * 2010-02-15 2011-08-24 Sumida Corporation Antennenspule
US20150310976A1 (en) * 2014-04-25 2015-10-29 Delta Electronics (Shanghai) Co., Ltd. Magnetic element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4060693A1 (de) 2021-03-17 2022-09-21 Premo, S.A. Flüssigkeitsgekühlte spule für eine drahtgewickelte magnetische vorrichtung
WO2022194517A1 (en) 2021-03-17 2022-09-22 Premo, Sa Liquid cooled bobbin for a wire wound magnetic device

Also Published As

Publication number Publication date
ES2832423T3 (es) 2021-06-10
EP3319174B1 (de) 2020-08-12

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