EP4252261A1 - Electronic component comprising a magnetic circuit and a plurality of electrical conductors - Google Patents
Electronic component comprising a magnetic circuit and a plurality of electrical conductorsInfo
- Publication number
- EP4252261A1 EP4252261A1 EP21819410.8A EP21819410A EP4252261A1 EP 4252261 A1 EP4252261 A1 EP 4252261A1 EP 21819410 A EP21819410 A EP 21819410A EP 4252261 A1 EP4252261 A1 EP 4252261A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- conductor
- magnetic circuit
- electrical
- series
- 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.)
- Pending
Links
- 239000004020 conductor Substances 0.000 title claims abstract description 84
- 238000004804 winding Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
-
- 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
-
- 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
- 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
- H01F27/2823—Wires
-
- 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
- H01F37/00—Fixed inductances not covered by group H01F17/00
-
- 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
- H01F27/2804—Printed windings
- H01F2027/2819—Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit
-
- 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
Definitions
- the present invention relates to an electronic component comprising a magnetic circuit and a plurality of electrical conductors.
- the electronic component belongs for example to an electrical circuit on board a vehicle with hybrid or electric propulsion. It could be a car.
- This component is for example integrated into a static converter of this electrical circuit, this converter being for example an inverter/rectifier allowing the charging of an electrical energy storage unit of the vehicle or the supply of the electrical propulsion machine of the vehicle.
- the electronic component can be integrated into a DC/DC voltage converter of the electrical circuit on board the vehicle.
- the object of the invention is to meet this need and it achieves this, according to one of its aspects, with the aid of an electronic component comprising:
- each electrical conductor being distinct from one another, and being arranged around a portion of the magnetic circuit dedicated to said conductor, the magnetic circuit comprising a one-piece wall in which several magnetic fields circulate, each of these magnetic fields being respectively associated with at least one electrical conductor of the component.
- the presence of the one-piece wall makes it possible to share part of the magnetic circuit since this wall is traversed by several magnetic fields, each field being associated with one or two conductors of the component.
- This wall is for example common to all the magnetic fields associated with the conductors of the component. From one magnetic field to another, the field lines can circulate in different areas of the wall.
- each electrical conductor is separate, means that each electrical conductor has its own input and its own output in the component, unlike what is disclosed in application WO2019 /233880 in which the same mban defines several inductors in series, the input of an electrical conductor which is here a portion of the strip then being merged with the output of another electrical conductor.
- Each electrical conductor can define a single turn around the dedicated portion of the magnetic circuit. As a variant, each conductor defines several turns around this portion, for example between one and fifty turns.
- Each electrical conductor is for example a wire or, as a variant, an electrically conductive track of an electronic card.
- the magnetic circuit may comprise a plurality of bars distinct from each other, each bar allowing looping back of a magnetic field circulating in the wall.
- Each bar can connect two portions of the magnetic circuit, an electrical conductor being respectively arranged around one of these portions. In such a case, each magnetic field is associated with two electrical conductors.
- At least one bar in particular each bar, can connect a portion of the magnetic circuit around which an electrical conductor is arranged and a portion of the magnetic circuit without an electrical conductor arranged around.
- the magnetic field circulating in this bar is associated with only one electrical conductor.
- All the rungs can be arranged parallel to each other. All the bars can be identical.
- Each bar can extend opposite a zone of the wall.
- Each bar can be dedicated to a single magnetic field.
- each portion of the magnetic circuit around which an electrical conductor can be arranged is made integrally with the wall and each of said portions defines a protrusion with respect to this wall.
- Each bar can then connect two growths.
- each portion of the magnetic circuit around which an electrical conductor can be arranged can be made in one piece with a bar and define a protrusion relative to this bar.
- Each bar is thus associated with two growths.
- portions of the magnetic circuit around which electrical conductors can be arranged which are made in one piece with the wall and each defining a protrusion relative to this wall
- portions of the circuit magnetic around which can be arranged electrical conductors which are made of one-piece fashion with a bar and each defining a protrusion relative to this bar
- All the growths thus defined can have a respective electrical conductor arranged around them.
- the wall, respectively each bar, may have the shape of a plate, respectively of a section of plate, and the protrusion may extend transversely, in particular perpendicularly, with respect to the plane with respect to which the plate extends, respectively the section of plaque.
- each protrusion can form a stud extending from one of the wall and of the bar, in particular in the direction of the other of the bar and of the wall.
- All one-piece pedestals with the wall can extend towards the rungs. All one-piece pedestals with rungs can extend towards the wall.
- each bar thus completed can have a C shape, each branch of the C being defined by a stud.
- the studs can comprise a first series of studs arranged on a first side of the wall or of the plurality of bars, and a second series of studs arranged on a second side of the wall or of the plurality of bars, the first side being opposite the second side.
- the component defines for example between four and ten studs, for example six studs, and these studs can be distributed homogeneously or not between the two aforementioned series.
- All or part of the studs may have the same shape, having for example a rectangular, circular or elliptical section, when observed in its direction of extension.
- the first series of studs can be aligned along a first axis and the second series of studs can be aligned along a second axis, the first axis being in particular parallel to the second axis.
- the pitch of the first series, or distance between two consecutive studs of this first series may or may not be constant.
- the pitch of the second series similarly defined, may or may not be constant. When each series has a constant step, this step may or may not have the same value from one series of plots to another.
- the ratio between the pitch of a series and the distance along the axis of said series over which each plot extends can be greater than one or less than one.
- the wall may comprise, between two consecutive studs of the same series, a cavity open to the outside, so as to keep the edge of the wall defined by this cavity of the axis of the series of studs.
- This cavity may define a cutout in the edge of the wall.
- Each stud of the first series can be aligned with a stud of the second series, perpendicular to the first axis and to the second axis, and the ratio between:
- the dimension of the wall, perpendicular to these two axes, between a first and a second stud, and - a dimension of the wall, perpendicular to these two axes, other than between a first and a second stud may be greater than one or less than 1
- the pitch of the stud series can be greater than 0.1, which improves the mechanical robustness of the wall.
- Each bar can be partially or totally arranged opposite a zone of the wall extending perpendicularly to the two aforementioned axes and connecting a stud of the first series of studs to a stud of the second series of studs.
- the bar is for example entirely superimposable on this zone of the wall.
- the studs of the first series can be staggered with respect to the studs of the second series, a first stud not being aligned with a second stud perpendicular to these two axes.
- a first electrical conductor can be placed around a portion of the magnetic circuit, and a path taken by the magnetic field associated with this first conductor can be defined by:
- the path taken by the magnetic field associated with the first conductor may be devoid of an air gap.
- a second electrical conductor may or may not be arranged around the other portion of the magnetic circuit.
- the magnetic circuit, the first conductor and the second conductor can define an electrical transformer.
- the component can define a plurality of electrical transformers, each electrical transformer being defined by:
- first electrical conductor arranged around a portion of the magnetic circuit, this portion forming in particular a first pad
- second electrical conductor arranged around another portion of the magnetic circuit, this other portion forming in particular a second pad, said portions, in particular the first pad and the second pad, being associated with the same bar.
- the invention makes it possible to produce several electrical transformers, for example three electrical transformers, with a single piece of the magnetic circuit, namely the wall, which is common to these electrical transformers, and as many bars as there are electrical transformers.
- the first electrical conductor and the magnetic circuit define an inductance.
- the path taken by the magnetic field associated with the first conductor can comprise an air gap, and the magnetic circuit and the first conductor can define an inductor.
- This air gap can be found for example:
- the path taken by the magnetic field associated with this first conductor can be defined by:
- the invention can then make it possible to produce several inductors with a part of the magnetic circuit, namely the wall, which is common to these inductors.
- These inductors can be power inductors, having for example a value between 100 nH and 10 mH.
- These inductances can for example be used for EMC filtering, for example common mode current filtering or differential mode current filtering.
- the electronic component can define:
- each transformer corresponding to a bar connecting two portions around which an electrical conductor is respectively arranged, these two portions being moreover connected in a single piece or not by the wall of the circuit, without an air gap interposed in the path of the magnetic field, and
- inductance corresponding to a bar connecting two portions of which only one has an electrical conductor arranged around it, these two portions being moreover connected in a single piece or not by the wall of the circuit, with an air gap interposed in the path of the magnetic field.
- a converter in particular a DC/DC voltage converter, in particular a 12V/48V converter, or a inverter/rectifier for the electrical power supply of an electric propulsion machine, or an inverter/rectifier for the charging circuit of an electrical energy storage unit, comprising a component as defined above.
- the converter may comprise an electronic card in which the electrical conductors are integrated, the magnetic circuit extending on either side of the electronic card.
- the electronic card is for example a printed circuit card and each electrical conductor is for example a track of this printed circuit card.
- the wall is for example arranged above, respectively below, the electronic card while the bars are arranged below, respectively above, the electronic card.
- the converter may include electronic switches that may define one or more switching arms. Each electronic switch can be controllable. Each controllable switch can be a transistor using gallium nitride (GaN) or silicon carbide (SiC) or silicon.
- FIG. 1 schematically shows in perspective an electronic component according to a first example of implementation of the invention
- FIG. 1 is a top view of the wall of the electronic component of Figure 1
- Figure 3 shows similarly to Figure 1 an electronic component according to a second example of implementation of the invention.
- FIG. 1 An electronic component 1 according to an example of implementation of the invention.
- This component 1 can be integrated into an electrical circuit on board a vehicle with hybrid or electric propulsion.
- This component 1 is for example integrated into a static converter of this electric circuit, this converter being for example an inverter/rectifier allowing the charging of an electric energy storage unit of the vehicle or the supply of the electric propulsion machine of the vehicle.
- the electronic component can be integrated into a DC/DC voltage converter of the electrical circuit on board the vehicle, in particular a DC/DC voltage converter 12V/48V or a DC/DC voltage converter between a voltage of 12 V and a voltage greater than 300 V.
- the electronic component 1 allows the production of three electrical transformers, but the invention is neither limited to a precise number of electrical transformers, nor to the sole production of electrical transformers, as we shall see later.
- the component comprises a magnetic circuit 4 as well as a plurality of electric conductors 6.
- the electric conductors 6 can be electric wires or be other.
- the component 1 comprises for example an electronic board such as a printed circuit board not shown, and the electrical conductors 6 can then be electrically conductive tracks of this electronic card.
- the magnetic circuit 4 here contains several constituents, namely in the example considered: a wall 2 from which extends in one piece a plurality of protrusions 3, and a plurality of bars 5.
- the bars 5 are here identical and arranged parallel to each other.
- Each protrusion 3 here forms a stud with respect to the wall 2 from which the protrusion extends.
- a bar 5 comes, by each of its ends, opposite the free end of a stud 3.
- the wall 2 is here in one piece, in the form of a plate from which are born the studs 3 which are all turned towards the bars 5.
- magnetic circuit 4 can extend on either side of this electronic card.
- the wall 2 is for example placed under the card while the bars 5 are placed above the card. Holes in the card can allow the passage of the pads 3.
- each stud 3 is divided into two series of studs, each series being arranged on one side of the wall 2.
- Each stud 3 here extends substantially perpendicularly from the wall 2.
- each series of studs 3 is aligned along an axis, the first series of studs 3 being aligned along an axis (XI) and the second series of studs 3 being aligned along an axis (X2).
- the axes (XI) and (X2) are parallel.
- the studs 3 are all identical, whether they belong to the first series of studs or to the second series of studs.
- Each of these studs 3 can have, when observed in its direction of extension, a rectangular section, but other shapes are possible, such as a circular or elliptical shape for example.
- the distance B along which a plot 3 extends along Tax (XI) or (X2) of the series of plots to which it belongs is constant over all the plots, and the pitch A between two consecutive plots of the same series is here constant over the entire series considered, this constant value being the same from one series to another in this example.
- the ratio between these distances B/A can be greater or less than
- the wall 2 has, perpendicular to the axes (XI) and (X2) a dimension which varies when Your moves along said axes.
- the wall 2 has in the example considered an alternation of wide portions 10 and narrow portions 12.
- the wide portions 10 connect in the example described two pads belonging respectively to the first series of pads 3 and to the second series of studs 3, while the narrow portions 12 occupy the space between two consecutive studs.
- each cavity 8 delimiting a transition between a wide part 10 and a narrow part 12 are rectilinear and perpendicular to the axes (XI) and (X2), so that the length along the axes (XI ) and (X2) along which a cavity 8 extends is equal to the pitch A of the series of studs 3.
- the cavities 8 formed in the edge of the wall 2 closest to the first series of studs occupy the same positions as the cavities 8 formed in the edge of the wall 2 closest to the second series of studs, these cavities 8 being in particular superimposable.
- the various components of the magnetic circuit 4 are for example made of ferrite or magnetic powder.
- component 1 defines several electrical transformers.
- An electrical conductor 6 is thus associated with each pad 3, being arranged around this pad 3 so as to form a number of turns which may be between one and fifty.
- the bars 5 and the wall 2 are assembled without air gap, so that, for a given electrical conductor 6, the magnetic field induced by the circulation of electric current in this conductor 6 around a pad 3 circulates in a closed circuit defined by: pad 3, wall 2, pad 3 of the other series associated with the same bar 5, and this bar 5.
- the electrical winding 6 disposed around the stud 3 of the first series of studs can define a primary winding of an electrical transformer and the electrical winding 6 disposed around the stud 3 of the second series of studs connected by a bar 5 to the stud 3 around which the primary winding is arranged can define a secondary winding of an electric transformer.
- the magnetic field induced by the flow of electric current in the primary winding can then flow in wall 2, induce electric current in the secondary winding, and loop back via bar 5.
- each bar 5 connects pads 3 around which an electrical conductor 6 is arranged
- each bar 5 is integrated with an electrical transformer.
- the wall 2 belongs to all these electrical transformers, that is to say that this wall is traversed by each magnetic field associated with an electrical transformer.
- each wide portion 10 is borrowed by the magnetic field of an electric transformer and these wide portions 10 all belong to the same one-piece part, to namely the wall 2.
- the presence of the cavities 8 in the wall 2, and therefore of the narrow portions 12 in this wall 2 makes it possible to promote the decoupling between these electrical transformers, avoiding the exchange of magnetic field between two consecutive transformers of the electronic component 1.
- the studs 3 are still defined by protrusions, but these are protrusions extending from the bars 5 and not from the wall 2.
- Each bar 5 has at its two ends a protrusion made in one piece with it and this protrusion defines a stud 3.
- Each bar 5 is thus completed by two studs, so as to have a C shape while the wall 2 is here devoid of stud, having for example a plate or block shape.
- the magnetic circuit 4 formed by the pads 3, the bars 5 and the wall 2 has no air gap. This absence of air gap is for example guaranteed by the use of fixing by magnetic glue or by clamping clips.
- all or part of the pads 3 is not used to make an electrical transformer, but to make inductors.
- an air gap is provided in the path traveled by the magnetic field associated with an electrical conductor 6 arranged around a pad 3 and each bar is only associated with a pad 3 around which a conductor is arranged. electrical 6, the other pad 3 associated with this bar 5 being devoid of electrical conductor 6 around it.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2012370A FR3116937A1 (en) | 2020-11-30 | 2020-11-30 | Electronic component comprising a magnetic circuit, and a plurality of electrical conductors |
PCT/EP2021/082613 WO2022112217A1 (en) | 2020-11-30 | 2021-11-23 | Electronic component comprising a magnetic circuit and a plurality of electrical conductors |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4252261A1 true EP4252261A1 (en) | 2023-10-04 |
Family
ID=74669007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21819410.8A Pending EP4252261A1 (en) | 2020-11-30 | 2021-11-23 | Electronic component comprising a magnetic circuit and a plurality of electrical conductors |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4252261A1 (en) |
CN (1) | CN116529841A (en) |
FR (1) | FR3116937A1 (en) |
WO (1) | WO2022112217A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001230120A (en) * | 2000-02-18 | 2001-08-24 | Hitachi Ferrite Electronics Ltd | Four-leg magnetic core and hybrid choke coil provided with both common mode and normal mode |
US10366826B2 (en) * | 2014-12-03 | 2019-07-30 | Mitsubishi Electric Corporation | Dual-mode choke coil and high-frequency filter using same, and on-board motor integrated electric power steering and on-board charging device |
CN106998142B (en) * | 2016-01-25 | 2019-08-30 | 台达电子企业管理(上海)有限公司 | Controlled resonant converter, the inductance of multi-channel parallel integrate magnetic element and transformer integrates magnetic element |
FR3082351B1 (en) | 2018-06-08 | 2021-10-22 | Valeo Systemes De Controle Moteur | COMPONENT FORMING AT LEAST TWO INDUCTANCES |
CN111554493B (en) * | 2020-05-25 | 2022-01-25 | 台达电子企业管理(上海)有限公司 | Three-phase transformer assembly and power module |
-
2020
- 2020-11-30 FR FR2012370A patent/FR3116937A1/en active Pending
-
2021
- 2021-11-23 CN CN202180079920.5A patent/CN116529841A/en active Pending
- 2021-11-23 EP EP21819410.8A patent/EP4252261A1/en active Pending
- 2021-11-23 WO PCT/EP2021/082613 patent/WO2022112217A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN116529841A (en) | 2023-08-01 |
WO2022112217A1 (en) | 2022-06-02 |
FR3116937A1 (en) | 2022-06-03 |
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Owner name: VALEO ELECTRIFICATION |