WO2024120902A1 - Transformateur triphase pour convertisseur de tension isole - Google Patents
Transformateur triphase pour convertisseur de tension isole Download PDFInfo
- Publication number
- WO2024120902A1 WO2024120902A1 PCT/EP2023/083429 EP2023083429W WO2024120902A1 WO 2024120902 A1 WO2024120902 A1 WO 2024120902A1 EP 2023083429 W EP2023083429 W EP 2023083429W WO 2024120902 A1 WO2024120902 A1 WO 2024120902A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support
- magnetic circuit
- electrical
- ribs
- windings
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/12—Two-phase, three-phase or polyphase transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
- H01F2005/022—Coils wound on non-magnetic supports, e.g. formers wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications
Definitions
- the present invention relates to an electronic component comprising a magnetic circuit, and at least two electrical conductors each having a portion arranged around the same part of the magnetic circuit, each of said portions forming a winding between a first and a second end, these two windings being in inductive coupling with each other through the magnetic circuit.
- Such an electronic component defines for example a three-phase transformer for an isolated voltage converter, such a voltage converter being for example integrated into a component for the electrical supply of a vehicle electrical energy storage unit, also called " charger” of this electrical energy storage unit.
- the electrical energy storage unit is for example a battery, which may have a nominal voltage greater than 60V, for example greater than or equal to 300V, 400V, 800V, or even 1000V.
- the voltage converter receives, for example, an alternating voltage from an electrical network and supplies the battery with a direct voltage. This converter can convey a power greater than 5kW, for example greater than 7kW, for example greater than 1lkW, in particular 22kW or more.
- the electronic component comprises in a known manner:
- the invention aims to meet this need and it achieves this, according to one of its aspects, using an electronic component, comprising:
- the support comprises:
- the presence of the ribs makes it possible to further distance the electrical windings from the portion of the magnetic circuit around which they are arranged, thus reducing copper losses in the electronic component. Furthermore, the presence of these ribs also makes it possible to create an empty space between this portion of the magnetic circuit and the support in the areas devoid of ribs, space occupied by a thermally conductive resin, which promotes cooling of the magnetic circuit.
- the support comprises for example four, or six, or eight ribs, each extending away from the wall towards the portion of the magnetic circuit.
- the invention is, however, not limited to a particular number of ribs.
- each rib can have the same shape.
- the wall of the support can define a hollow cylinder of circular cross section.
- each rib can extend radially, that is to say along a radius of this cylinder, in a plane perpendicular to its axis.
- the ribs can be distributed evenly by moving around the wall of the support. In other words, when we move around this wall, the distance between two successive ribs can remain constant.
- the support may include three flanges offset along the longitudinal axis of the support, so that one of the electrical windings is disposed between the first and the second rim and the other of the electrical windings is disposed between the second and the second. third ledge.
- the two electrical windings carried by a support of electrical conductors can follow one another along this support, without overlapping along planes perpendicular to the longitudinal axis of this support.
- All or part of the ribs may extend continuously along the axis of the support from the first edge to the third edge. Alternatively, all or part of the ribs extend discontinuously along the axis of the support from the first edge to the third edge.
- All or part of the ribs can extend to the portion of the magnetic circuit with contact with this portion.
- the radial space existing between the wall and the magnetic circuit is locally completely filled by the rib.
- radial play may remain between the rib and the magnetic circuit.
- the wall around which the electrical windings are arranged can define a hollow cylinder of circular section.
- Each electrical conductor is for example made of Litz wire.
- the support can be made in one piece, being for example made of, for example, plastic such as polybutylene terephthalate (PBT), or polyamide (PA).
- plastic such as polybutylene terephthalate (PBT), or polyamide (PA).
- the electronic component can define a transformer for an isolated voltage converter.
- no cooling chamber using a liquid is for example interposed between the electrical windings and the portion of the magnetic circuit on which the support is placed.
- the transformer is for example a three-phase transformer for an isolated voltage converter, comprising three supports of electrical conductors, each support being arranged around a part of the magnetic circuit and carrying two windings in inductive coupling with one another by the intermediate of the magnetic circuit, the supports defining in particular a geometric pattern being an equilateral triangle.
- Each support thus carries two windings in inductive coupling with one another, together defining a phase of the three-phase transformer.
- the arrangement of the three electrical conductor supports in an equilateral triangle can ensure balancing between the electrical parameters such as the inductances of the electrical windings and reduce the magnetic volume.
- the magnetic circuit can be made up of two parts, each part defining a base carrying pins, two by two superimposed when these two parts are assembled, and the superposition of two pads defines the part of the magnetic circuit on which a support of two electrical conductors is mounted.
- vehicle electrical energy including the transformer defined above.
- the electrical energy storage unit is for example a battery which can have one of the above nominal voltages.
- FIG.l schematically represents part of the electrical circuit of a component for the electrical supply of a vehicle electrical energy storage unit
- FIG.2 represents in elevation an example of a three-phase transformer that can be used in the circuit of Figure 1,
- FIG.3 represents in isolation the magnetic circuit of the three-phase transformer of Figure 2
- FIG.4 partially represents the three-phase transformer of Figures 2 and 3 when the housing cover is removed
- FIG.5 represents a detail of an example of a system for holding the transformer housing cover on the support
- FIG.6 represents the cover of the box in Figure 4,
- FIG.7 represents in isolation the body of the terminal block visible in Figure 2,
- FIG.8 represents the body of Figure 7 in which inserts are arranged
- FIG.9 represents the terminal block of Figures 7 and 8 with electrically conductive bar and screw
- FIG.10 represents the face of the transformer opposite to that shown in Figure 4,
- FIG.11 is a view of the electrical conductor support of the transformer from the same side as Figure 10, and shows the system for holding the support on the magnetic circuit and the system for holding the support on the body of the housing of the transformer carried by this support
- FIG.12 represents the body of the transformer housing on which the electrical conductor support of Figure 11 is held
- FIG.13 is a view similar to Figure 11 and also shows ribs allowing this support to be moved away from the portion of the magnetic circuit on which it is mounted,
- FIG.14 [Fig.15] and [Fig.16] are views similar to that of Figure 13, when the electrical conductor support is mounted on the portion of the magnetic circuit,
- FIG.17 is a side sectional view of Figure 16,
- - [Fig.18] represents three electrical conductor supports of the transformer and their electrical conductors, in the absence of the magnetic circuit
- - [Fig.19] represents in isolation one of the three electrical conductor supports of Figure 18 with its electrical conductors
- FIG.20 represents the electrical conductor support of Figure 19 without its electrical conductors.
- Figure 1 shows part of the electrical circuit 1 of a component for the electrical supply of a vehicle electrical energy storage unit.
- This component is also called a “charger”.
- the electrical energy storage unit is for example a battery, which can have a nominal voltage greater than 60V, for example greater than or equal to 300V, 400V, 800V, or even 1000V.
- Circuit 10 receives as input an alternating voltage from a network not shown which is here three-phase.
- a rectifier making it possible to convert this alternating voltage into a direct voltage, and also carrying out, if necessary, a power factor correction function (“Power factor correction” in English), is arranged upstream of a direct bus 11. Downstream on this direct bus, from the electrical network, is placed an isolated voltage converter 12, here being a DC/DC.
- This converter 12 comprises in a known manner an inverter 14, a three-phase transformer 15, and a rectifier 16 supplying the vehicle with a direct voltage isolated from the electrical network.
- the three-phase transformer 15 is connected to each of the rectifier 16 and the inverter 14 by a block of inductors 17 and a block of capacitors 18, so as to define a CLLLC structure .
- Other structures are of course possible, such as an LLC, CLLC, LC or even CL structure.
- each phase has a primary winding 20 and a secondary winding 21 in inductive coupling with each other, and the primary windings 20 are star-connected and the secondary windings 21 are also connected in star.
- the three-phase transformer 15 comprises in the example considered a magnetic circuit 22, comprising a first part 23 and a second part 24.
- Each part 23, 24 comprises: a base 26 of substantially triangular outline, and three pads 27 each extending in direction of the base 26 of the other part of the magnetic circuit 22.
- Each base 26 here has a contour defining an equilateral triangle.
- the transformer 15 further comprises three supports 30 of electrical conductors 31, 32, each support 30 being here mounted on two facing pads 27 belonging respectively to one and the other of the parts 23, 24 of the magnetic circuit.
- Two electrical conductors 31, 32 associated with the same support 30 respectively present a portion defining a primary winding 20 and a portion defining a secondary winding 21.
- These electrical conductors 31, 32 are for example Litz wire.
- the three supports 30 of electrical conductors 31, 32 are positioned so as to define an equilateral triangle.
- the transformer 15 further comprises a housing 50 comprising a body 51 closed by a cover 52, which are visible in Figures 4 and 6.
- This body 51 and this cover 52 are for example made of metal, for example aluminum.
- the supports 30 and the magnetic circuit 22 are arranged inside the housing 50.
- the body 51 is filled with a resin capable of being polymerized to harden and immobilize the components arranged inside the body ("potting" in English ).
- the housing 50 also has a triangular outline, being more precisely here an equilateral triangle.
- the housing is in the example considered exclusively formed by the body 51 and the cover 52, but the invention is not limited to a housing 50 consisting of two parts.
- each pad 27 defines a clean air gap 28, for example via a zone of the pad 27 filled with non-magnetic material such as an epoxy resin composite reinforced with fiberglass (FR4) or ceramics.
- This zone occupied by this non-magnetic material defines, for example, an entire section of the pad. Several sections are for example assembled with this area of the pad 27 to constitute this pad 27.
- each magnetic field allowing inductive coupling between a primary winding 20 and a secondary winding 21 crosses exactly three air gaps.
- the magnetic circuit 22 of the example considered comprises a central leg 40 carried by one of the parts 23, 24 of the magnetic circuit 22.
- This central leg 40 is here made in one piece with part 23 of magnetic circuit 22 which carries it.
- the central leg 40 extends in this example continuously between two ends each being in contact with one of the bases 26 of the magnetic circuit 22, so that no air gap is provided in the leg central 40.
- the central leg 40 has a core 41 and three protrusions 42 extending from this core 41, each protrusion 42 extending between two neighboring pads 27 carried by the same part of the magnetic circuit.
- each stud 27 has a circular exterior contour
- each protrusion 42 of the central leg 40 here has a wall facing the studs 27 of rounded shape.
- the three-phase transformer 15 includes a connection terminal block 45.
- This connection terminal block 45 is fixed to one side of the housing 50 of the three-phase transformer 15.
- the terminal block 45 here defines six terminals 60 for the connection of the three-phase transformer 15 to the rest of the electrical circuit 10, these terminals 60 being represented schematically in Figure 1. These terminals 60 here come into contact with electrical tracks of an electronic card not shown.
- connection terminal block 45 has, as can be seen in Figure 2, an elongated shape, and the six terminals 60 are here arranged in a row.
- the terminal block 45 here comprises a body 61 and a plurality of electrically conductive bars 62, each terminal 60 being defined by a portion 63 of a bar. Each portion 63 is here flat, so as to come into contact with an electrical track of the electronic card mentioned above.
- the body 61 can be made of plastic, for example PBT, PA, etc.
- Each electrically conductive bar 62 has for example a portion 65, opposite the portion 63 defining the terminal, which is electrically connected to one of the electrical conductors 31, 32, here via a hollow sleeve 66 inside which the conductor 31, 32 is inserted, for example fixed by crimping or welding.
- Each electrically conductive bar 62 locally comprises a hole 67 and the fixing of this electrically conductive bar 62 on the body 61 is carried out by means of a screw 68 received in this hole 67.
- the body 61 here comprises six housings 69, and each of these housings receives an insert 70 providing a hole 71, the aforementioned screw 68 being received in an insert hole 71.
- the fixing of the electrically conductive bar 62 on the body 61 is done via the screw 68 and the insert 70 received in housing 69.
- Each insert 70 can be made of metal, in particular steel. Alternatively, each insert is made of composite material. Six inserts are for example provided, and all these inserts 70 have in the example considered the same shape and the same dimensions.
- Each screw 68 can, in addition to ensuring the fixing of an electrically conductive bar 62 on the body 61, also ensure the fixing of the electrically conductive bar 62 on the electronic card not shown.
- each insert 70 can define a positioning relief 73 of the portion 63 of the electrically conductive bar defining the hole 67.
- This positioning relief 73 is for example a flat surface of circular shape.
- each housing 69 can provide a recess 75 capable of accommodating an end portion 64 of the electrically conductive bar 62, in order to ensure correct positioning of this bar on the body 61 and to avoid any relative rotation between this bar and this body.
- the body 61 comprises a plurality of housings 69 which directly receive the screws 68, in the absence of insert 70.
- the fixing of the bar electrically conductor 62 on the body 61 is done directly via the screw 68, without an intermediate part.
- each support 30 of electrical conductors can integrate a system 80 for holding the cover 52 on this support 30.
- Each support 30 comprises for example a single pin 81 projecting relative to the rest of the support 30 along the longitudinal axis of the latter.
- only two of the three supports of the transformer 15 include a pin 81, the third support 30 being devoid of it.
- Figure 5 represents in detail a pin 81, the latter being able to have a section perpendicular to the longitudinal axis of the support which is cruciform.
- Each pin 81 of a support 30 of electrical conductors is in the example considered received by force in an opening provided in the cover 52, as can be seen in Figure 4.
- the relative arrangement of the pins 81 of the supports 30 makes it possible to immobilize the cover 52.
- the holding system 80 of the cover 52 on the support 30 can extend along the longitudinal axis of the support 30 on the same side of the support 30 as a guiding system 85 of electrical conductors which will be described with reference to Figures 18 to 20.
- the holding system 80 is not shown, the guiding system 85 may be present without necessarily the holding system 80 being present.
- each electrical conductor 31, 32 carried by a support 30 of the transformer 15 can be guided outside the winding 20, 21 which it defines.
- each of these conductors 31, 32 is guided by the system of guide 85 beyond each of the ends of the electrical winding 20, 21 which it defines.
- the first ends of the electrical conductors can constitute an output to the electrical circuit 10 outside the transformer 15, and three of the second ends of the electrical conductors can lead to a common point via a star connection to the primary, and three more of these second ends of the electrical conductors can lead to a common point via another star connection at the secondary.
- the support 30 of the two electrical windings 31, 32 includes:
- this wall 90 defines in the example considered but in a non-limiting manner a hollow cylinder of circular cross section, and
- edges 92, 93, 94 offset along the longitudinal axis of the support, so that one of the electrical windings 31 is arranged between the first 92 and the second edge 92 and the other of the electrical windings 32 is arranged between the second 93 and the third 94 rim, as is clearly visible in Figure 2 for example.
- the distance between two consecutive edges 92, 93 and 93, 94 remains constant in the example considered.
- the guiding system 85 acts on the electrical conductors on the one hand via clamps 97 and 98, and on the other hand via additional walls 105 and 106.
- the guide system 85 comprises, for each electrical conductor 31, 32, on the one hand a first clamp 97 cooperating with this electrical conductor 31, 32 beyond the first end of the electrical winding 20, 21 which it defines.
- a clamp 97 has for example two arms 99 curved so as to match a zone of the contour of this end of the electrical conductor, as shown in Figure 18 or 20. This is a circular contour.
- Each clamp 97 is for example, but in a non-limiting manner, made in one piece with the rest of the support 30 of electrical conductors.
- each first clamp 97 cooperates for example with a portion of electrical conductor 31,32 on the way to a connection terminal 60.
- the guiding system 85 also comprises a second clamp 98 cooperating with the electrical conductor beyond the second end of the electrical winding which it defines, these first 97 and second 98 clamps succeeding one another along the one of the first 92, second 93 and third 94 ledges.
- each second clamp 98 cooperates for example with a portion of electrical conductor 31,32 on the way to a common point of a star connection.
- the first rim 92 comprises two first clamps 97 which each cooperate respectively with one of the electrical conductors 31, 32 beyond the first end of the electrical winding 20, 21 which it defines, and two second clamps 98 which each cooperate respectively with an electrical conductor beyond the second end of this electrical winding 20, 21, and
- the second rim 93 comprises a first clamp 97, arranged under a first clamp
- the clamps carried by the second rim 94 make it possible to guide the electrical conductor 32 outside the electrical winding disposed between the second rim 93 and the third rim 94.
- These two additional walls 105 and 106 of the guide system 85 are here offset so as to define between them a guide channel 108 receiving the electrical conductors 31, 32 in a stacked manner. exterior of the windings 20, 21 which they define. Channel 108 here has a constant dimension.
- These additional walls extend in the example considered on either side of an arcuate portion of the first rim 92, projecting axially beyond this first rim 92. In the area overlapping this first rim 92, the additional walls 105 and 106 each define an arcuate portion, the wall 106 having a radius greater than the wall 105, as is also visible in Figure 17.
- the wall 106 comprises first openings 110 for the passage of the electrical conductors 31, 32 towards the electrical winding 20, 21 which it defines, and second openings 111 in which no electrical winding pass. It can be seen that the first openings 110 are arranged radially facing a clamp 97, 98.
- each support 30 of electrical conductors 31, 32 also integrates a holding system 120 on the body 51 of the housing 50.
- This holding system 120 here comprises a pin 121, having in this example a section perpendicular to the longitudinal axis of the support which is cruciform. This pin 121 extending axially in distance from the rest of the support 30 from the third rim 94.
- each pin 121 is received by force in an opening 122 provided in the body 51 of the housing 50.
- This holding system can ensure immobilization of the magnetic circuit 22 on the body 51 of the housing before polymerization of the resin contained in this housing 50.
- each holding system 120 can then extend axially on one side of the support 30 while the holding system 80 and the guiding system 85 extend axially on the opposite side of support 30.
- a system 130 for holding support 30 of electrical conductors 31, 32 on the magnetic circuit 22 is thus provided.
- This holding system 130 is in the form of two pads 132 projecting relative to the rest of the support 30.
- these systems 130 and 120 can extend axially on the same side of the support , the pin 121 and a pad 132 being arranged in particular side by side as can be seen in the example of Figure 11.
- Each pad 132 here defines a surface 135 coming into contact with a surface 136 of a base 26 of the magnetic circuit 22.
- the surfaces 135 and 136 are planar here.
- Each pad 132 is for example supported by a reinforcement 133, as visible in Figure 11.
- the cooperation between the two pads 132 of a support 30 and the base 26 can ensure immobilization in rotation of the support 30 on the magnetic circuit 22.
- the cylindrical wall 90 of the support 30 comprises ribs 142 extending away from the wall 90 towards the stud 27 on which this support is mounted.
- ribs 142 are provided, but the invention is not limited to a precise number of ribs 142. These six ribs 142 thus constitute a spacing system 140 of the cylindrical wall 90, and therefore electrical windings 20, 21 which it carries, of pad 27.
- each rib 142 can have the same shape and be distributed uniformly around the stud 27.
- each rib 142 can extend continuously along the axis of the support 30 from the first rim 92 to the third rim 94.
- all or part of the ribs extend discontinuously along the axis of the support 30.
- each rib 142 does not extend for example as far as the pad 27 on which the support 30 is mounted. An empty space ensuring easy assembly thus remains present between each end of a rib facing the stud 27 and this stud 27.
- each support 30 of electrical conductors 31, 32 can be made in one piece.
- the support 30 is thus in one piece and has all or part of the aforementioned functionalities.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23817054.2A EP4631077A1 (fr) | 2022-12-08 | 2023-11-28 | Transformateur triphase pour convertisseur de tension isole |
| CN202380084333.4A CN120584387A (zh) | 2022-12-08 | 2023-11-28 | 用于隔离电压转换器的三相变压器 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2212962 | 2022-12-08 | ||
| FR2212962A FR3143181A1 (fr) | 2022-12-08 | 2022-12-08 | Composant électronique, notamment transformateur triphasé pour convertisseur de tension isolé |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024120902A1 true WO2024120902A1 (fr) | 2024-06-13 |
Family
ID=85685299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/083429 Ceased WO2024120902A1 (fr) | 2022-12-08 | 2023-11-28 | Transformateur triphase pour convertisseur de tension isole |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4631077A1 (fr) |
| CN (1) | CN120584387A (fr) |
| FR (1) | FR3143181A1 (fr) |
| WO (1) | WO2024120902A1 (fr) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH382292A (de) * | 1961-04-28 | 1964-09-30 | Landis & Gyr Ag | Spulenkörper |
| DE8623464U1 (de) * | 1986-09-02 | 1986-10-23 | Erich Grau GmbH, 7126 Sersheim | Spulenkörper für Transformatoren |
| EP0294297A1 (fr) * | 1987-05-11 | 1988-12-07 | Societe Pour L'application De L'optique Et De L'electronique A La Recherche Et A L'automatisation Optelec (Societe Anonyme) | Transformateur électrique pour four à micro-ondes |
| DE4203199A1 (de) * | 1992-02-05 | 1993-08-12 | Loewe Opta Gmbh | Magnetisches bauelement |
| US6958673B2 (en) * | 2002-08-22 | 2005-10-25 | Minebea Co., Ltd. | Coil bobbin with core spacing mechanisms |
| US8022803B2 (en) * | 2009-02-26 | 2011-09-20 | Samsung Electro-Mechanics Co., Ltd. | Transformer |
| CN215183430U (zh) * | 2021-08-02 | 2021-12-14 | 昱能科技股份有限公司 | 一种三相变压器、三相电感及磁芯 |
| FR3113178A1 (fr) * | 2020-07-29 | 2022-02-04 | Valeo Siemens Eautomotive France Sas | Composant magnétique à flux de fuite contrôlé |
| WO2022194517A1 (fr) * | 2021-03-17 | 2022-09-22 | Premo, Sa | Bobine refroidie par liquide pour un dispositif magnétique bobiné |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120139678A1 (en) * | 2010-12-03 | 2012-06-07 | Abb Technology Ag | Non-Linear Transformer with Improved Construction and Method of Manufacturing the Same |
-
2022
- 2022-12-08 FR FR2212962A patent/FR3143181A1/fr active Pending
-
2023
- 2023-11-28 WO PCT/EP2023/083429 patent/WO2024120902A1/fr not_active Ceased
- 2023-11-28 EP EP23817054.2A patent/EP4631077A1/fr active Pending
- 2023-11-28 CN CN202380084333.4A patent/CN120584387A/zh active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH382292A (de) * | 1961-04-28 | 1964-09-30 | Landis & Gyr Ag | Spulenkörper |
| DE8623464U1 (de) * | 1986-09-02 | 1986-10-23 | Erich Grau GmbH, 7126 Sersheim | Spulenkörper für Transformatoren |
| EP0294297A1 (fr) * | 1987-05-11 | 1988-12-07 | Societe Pour L'application De L'optique Et De L'electronique A La Recherche Et A L'automatisation Optelec (Societe Anonyme) | Transformateur électrique pour four à micro-ondes |
| DE4203199A1 (de) * | 1992-02-05 | 1993-08-12 | Loewe Opta Gmbh | Magnetisches bauelement |
| US6958673B2 (en) * | 2002-08-22 | 2005-10-25 | Minebea Co., Ltd. | Coil bobbin with core spacing mechanisms |
| US8022803B2 (en) * | 2009-02-26 | 2011-09-20 | Samsung Electro-Mechanics Co., Ltd. | Transformer |
| FR3113178A1 (fr) * | 2020-07-29 | 2022-02-04 | Valeo Siemens Eautomotive France Sas | Composant magnétique à flux de fuite contrôlé |
| WO2022194517A1 (fr) * | 2021-03-17 | 2022-09-22 | Premo, Sa | Bobine refroidie par liquide pour un dispositif magnétique bobiné |
| CN215183430U (zh) * | 2021-08-02 | 2021-12-14 | 昱能科技股份有限公司 | 一种三相变压器、三相电感及磁芯 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3143181A1 (fr) | 2024-06-14 |
| CN120584387A (zh) | 2025-09-02 |
| EP4631077A1 (fr) | 2025-10-15 |
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