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EP2924697B1 - Noyau magnétique avec corps parasite en forme de plaque et composant inductif - Google Patents

Noyau magnétique avec corps parasite en forme de plaque et composant inductif Download PDF

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Publication number
EP2924697B1
EP2924697B1 EP15156744.3A EP15156744A EP2924697B1 EP 2924697 B1 EP2924697 B1 EP 2924697B1 EP 15156744 A EP15156744 A EP 15156744A EP 2924697 B1 EP2924697 B1 EP 2924697B1
Authority
EP
European Patent Office
Prior art keywords
core
plate
leakage structure
diffuser
magnetic
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.)
Active
Application number
EP15156744.3A
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German (de)
English (en)
Other versions
EP2924697A1 (fr
Inventor
Norbert Ginglseder
Martin Grübl
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.)
Sumida Components and Modules GmbH
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Sumida Components and Modules GmbH
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Publication of EP2924697A1 publication Critical patent/EP2924697A1/fr
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Classifications

    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • 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
    • H01F3/12—Magnetic shunt paths
    • 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
    • H01F17/043—Fixed inductances of the signal type with magnetic core with two, usually identical or nearly identical parts enclosing completely the coil (pot 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
    • 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
    • H01F27/255—Magnetic cores made from particles
    • 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
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps

Definitions

  • the present invention relates to a magnetic core with a plate-shaped diffuser and an inductive component.
  • the present invention relates in particular to chokes and transformers with a plate-shaped scattering body inserted therein for the simple adaptation of scattering path guides and for achieving high adjustable leakage inductance values.
  • Inductive components are designed as chokes and transformers with magnetic cores.
  • a magnetic core of an inductive component consists of a ferromagnetic material, such as iron powder or ferrite, and is used to guide the magnetic field while at the same time improving the magnetic coupling between the windings and turns of individual windings.
  • the winding is made of a conductive material, for example copper or aluminum, in the form of a flat wire, round wire, stranded wire or foil wire.
  • a smoothing choke represents a special example of an inductive component that is used to reduce the residual ripple of a direct current with a superimposed ripple current.
  • Smoothing reactors are used, for example, for voltage converters or generally for components in which current fluctuations are undesirable.
  • limiting the magnetic coupling in inductive components is only desirable to a limited extent in various applications.
  • a certain amount of leakage inductance is generally desired to limit the current in the event of a short circuit.
  • push-pull interference in current-compensated chokes is suppressed by predefined leakage inductances.
  • smoothing chokes are designed as coupled inductance with a leakage path. It is therefore common in many cases to take measures when designing an inductive component that reduce the magnetic coupling and increase the leakage inductance.
  • a simple way of increasing the leakage inductance is to reduce the magnetic coupling between the windings by spacing the windings apart and nested them as little as possible.
  • only a very small and limited increase in the leakage inductance can be achieved by this measure.
  • discrete leakage paths made of a material with a magnetic permeability ⁇ 1 are introduced into a magnetic core between the windings.
  • air gaps are incorporated in the leakage path to prevent excessive magnetic flux through the leakage path, reducing the leakage inductance effectively limited.
  • the main inductance and leakage inductance are set, for example, in that the outer legs are each wound with a winding and air gaps are provided in the central slug and / or the outer legs.
  • these known magnetic cores have the disadvantage that they have poor mechanical properties due to the air gaps formed in the magnetic core and are easily damaged under mechanical stress.
  • large dimensions must often be selected for corresponding magnetic cores, so that inductive components manufactured accordingly continue to require a very large installation space.
  • 5,656,983 A a protective layer of magnetic and non-magnetic materials is placed between a first and a second core half in order to protect magnetic cores from mechanical loads that occur during the operation of a transformer.
  • Document JP 2011 146605 A also described a protective layer between two core halves, which, however, only consists of a single non-magnetic material.
  • document US 2010/171580 A1 shows an annular core which is formed from two C-core parts and two I-core parts, with gaps with low permeability being formed in the I-core parts.
  • ferrite parts and a module which are able to form a magnetic gap and which are influenced by an application environment and are able to reduce a time course of an inductance value and to provide methods for producing the ferrite parts and the
  • the module includes a lamination formed by laminating a plurality of ferrite green sheets, a first through hole formed in the lamination direction, and an insulator made of non-magnetic ceramics in the first through hole.
  • the first through hole is provided by sintering the lamination as a distributed magnetic gap.
  • a magnetic circuit for inductive electrical devices with a frame consisting of yokes and side walls is known, the frame having a preferably rectangular cross section and being made of a laminated magnetic material.
  • the frame between the two yokes at least one core leg is arranged, which has a circular cross-section and consists of a laminated magnetic material.
  • Plates made of a laminated magnetic material are arranged between the ends of the core limb and the yokes to distribute the flux between the limbs and the yokes.
  • the sheets in the plates are oriented so that they are perpendicular to the sheets in the yokes.
  • Each plate covers at least the full width of the yoke and at least the entire width of the core leg. The width of each plate is as great as the diameter of the winding which is arranged around the core leg.
  • Each plate will thus act as a mechanical support for the ends of the winding.
  • the font DE 20 2011 051 056 U1 discloses an inductive component with at least two inductor coils which are coupled to one another by a magnetic circuit and which are arranged in a common core, the common core having at least one intermediate core element which can be changed in the coupling between the windings of the inductor coils.
  • the invention provides a magnetic core with a first core section which has a first core limb, and a second core section which has a second core limb, and a plate-shaped diffuser as an insert in the magnetic core.
  • the plate-shaped diffuser includes a first diffuser section and a second diffuser section, each formed from a first material, and a first spacer, which is formed from a second material that has a lower magnetic permeability than the first material.
  • the first spacer separates the first diffuser section from the second diffuser section and penetrates the diffuser along its thickness direction.
  • the plate-shaped scattering body provides a scattering path which can be inserted into a magnetic core of an inductive element and which enables a very precise and reproducible setting of scattering inductances without reducing the mechanical and / or magnetic properties of a magnetic core to be produced. Furthermore, the plate-shaped diffuser can also be easily machined during later production processes in order to set a desired leakage inductance value and / or desired geometric dimensions of the diffuser on the basis of a predetermined design.
  • a spacing of the diffuser portions is smaller than a thickness of the diffuser which is set along its thickness direction. It is noted that a thickness of a plate-shaped body or its thickness direction is generally understood as the dimension of the body transverse to its large-area surfaces, as will be described below. The leakage inductance of the diffuser is effectively limited by a corresponding distance.
  • the diffuser further comprises a second spacer formed from the second material and a third diffuser portion formed from the first material.
  • the second spacer separates the third diffuser section from the second diffuser section and penetrates the diffuser along its thickness direction.
  • the first material comprises a ferrite material and the second material comprises a ceramic material.
  • Corresponding scattering bodies have advantageous magnetic properties while at the same time being easy to manufacture.
  • the spacers are sintered into the diffuser. This provides a mechanically stable diffuser with very easily predeterminable mechanical and magnetic properties, which can also be easily processed in later manufacturing phases.
  • the plate-shaped diffuser is arranged between the first core section and the second core section, so that each core section rests on a support surface of the diffuser.
  • the first core leg covers a first surface section formed from exposed first material.
  • the second core leg covers a second surface section formed from exposed first material.
  • the first core section furthermore has a third core limb which, in addition to the first core limb, covers a third surface section formed from exposed first material.
  • the third surface section is separated from the first surface section by a surface section formed from exposed second material.
  • the second core section furthermore has a fourth core leg which, in addition to the second core leg, covers a fourth surface section formed from exposed first material.
  • the fourth surface section is separated from the second surface section by a surface section formed from exposed second material.
  • the magnetic core has a double-E, double-C or an E-C core configuration.
  • an advantageous spreading path guidance is provided with at the same time great mechanical stability for a large number of core configurations.
  • the diffuser is arranged in the magnetic core in an air gap formed by the first and second core legs. This allows a further compact design.
  • an inductive component comprises a magnetic core, as described above, a first winding which is provided over the first core leg, and a second winding which is provided over the second core leg.
  • the diffuser is arranged in the magnetic core between the first and the second winding.
  • the inductive component is designed as a smoothing choke. This provides a smoothing throttle with advantageous spreading path guidance.
  • very compact components with very good scattering path guidance are provided by means of a plate-shaped scattering body, without the mechanical stability being adversely affected by the plate-shaped scattering body.
  • Components provided accordingly are suitable for the series production of inductive components which, according to the invention, are subject to low production tolerances, due to their mechanical and magnetic properties that can be set very easily. Chokes and transformers can therefore be manufactured with a very easily adjustable scatter path guidance with very low manufacturing tolerances, with magnetic scatter properties being easily and flexibly adjustable.
  • plate-shaped is to be understood as “similar to a plate” and therefore roundings in surfaces and / or edges are not excluded.
  • a “plate-shaped body” is understood to mean a geometrical body which has dimensions along three directions, each perpendicular to one another, with one of the three dimensions is much smaller than the other two dimensions.
  • a plate-shaped body can be viewed as cuboid (similar to a cuboid), one dimension being significantly smaller than the dimensions perpendicular to it.
  • the expression “significantly smaller” is to be understood to the effect that a ratio is generally ⁇ 1.
  • a ratio of a dimension a to a dimension b which is significantly smaller than the dimension a, can be less than 1 and in particular less than 0.5 or 0.25 or 0.1.
  • a ratio of the essentially smaller dimension to the larger one of the other two dimensions can be less than 0.2, for example.
  • the dimension that is significantly smaller than the other two dimensions is referred to as "thickness” and the corresponding direction in which the dimension is determined is referred to as "thickness direction”.
  • the longer dimension of the other two dimensions is called the “length” and the direction in which the length is determined is called the "length direction”.
  • width The remaining dimension is hereinafter referred to as "width” and the corresponding direction in which the width is determined is referred to as “width direction”. In cases where the length and width are the same, both are called “radius” and the corresponding direction is called “radial direction”.
  • radius the corresponding direction
  • radial direction the corresponding direction
  • a “plate-shaped body” has two opposing side surfaces and the remaining side surfaces (in terms of area dimensions) are significantly smaller than the opposing side surfaces.
  • plate-shaped scattering bodies are provided as an insert in the magnetic core of an inductive component for adapting a scattering path in the magnetic core and for achieving high leakage inductance values with a simultaneous low manufacturing tolerance.
  • Fig. 1 represents an embodiment of a plate-shaped scattering body 2 of a magnetic core according to the invention
  • Fig. 1 The coordinate system shown in perspective is oriented in a thickness direction of the diffuser 2 along the z-axis, while a longitudinal direction runs along the x-axis. A width direction is oriented along the y-axis.
  • the in Fig. 1 The scattering body 2 shown is cuboid with rounded longitudinal edges, whereby damage to the scattering body and / or damage to the inductive component to be formed is avoided in further manufacturing steps. However, this does not represent a restriction of the present invention. Furthermore, rounded width edges can be provided. Alternatively, rounding can be dispensed with.
  • the plate-shaped diffuser 2 is formed from three diffuser sections 11, 13 and 15.
  • the diffuser sections 11, 13, 15 are formed from the first material.
  • a spacer 17 is arranged between the diffuser sections 11 and 13.
  • the diffuser sections 13 and 15 are spaced apart from one another by a spacer 19.
  • the spacers 17 and 19 are formed from the second material.
  • a surface portion of the diffuser portion 11 in a top surface is shown in FIG Fig. 1 denoted by the reference number 26.
  • Corresponding surface sections of the diffuser sections 13, 15 are provided with the reference numerals 27, 28.
  • the surface sections 26, 27, 28 represent exposed surface sections made of the first material in the upper surface of the plate-shaped diffuser 2.
  • the surface sections 26, 27, 28 are separated and spaced apart in the upper surface by exposed areas of the spacers 17, 19. The same applies to the underside surface of the plate-shaped scattering body 2, which is opposite the upper surface and which is shown in the perspective view of FIG Fig. 1 is not shown.
  • the top and bottom surfaces of the plate-shaped scattering body 2 each serve as support surfaces for core legs when the plate-shaped scattering body 2 is inserted in a magnetic core, as further below with reference to FIG Fig. 2a , 2 B is described.
  • the plate-shaped diffuser 2 can be formed, for example, by alternating layers of the first and second material and subsequent sintering, whereby the spacers 17 and 19 are sintered into the diffuser 2.
  • the diffuser sections 11, 13 and 15 and the spacers 17 and 19 are each produced separately and then connected to one another in an additional sintering process.
  • a desired leakage inductance or saturation limit of the leakage inductance is suitably adapted.
  • a change in the leakage inductance can be achieved by adapting the spacers in the plate-shaped diffuser 2.
  • the saturation limit for the leakage inductance can easily be increased by adapting the thickness of the plate-shaped diffuser 2.
  • magnetic properties of the plate-shaped scattering body can thus also be adapted in subsequent processing steps, so that using the plate-shaped scattering body 2 provided according to the invention, leakage inductances and saturation limits for leakage inductances are provided with very low manufacturing tolerances. It can be seen that the leakage inductance and saturation limit are set via suitably dimensioned diffuser sections and / or spacers.
  • FIG. 2a shows an inductive component with a magnetic core 100 according to one embodiment and windings W1 and W2 schematically in a cross-sectional view.
  • the magnetic core 100 is formed from a first core section 110, a second core section 120 and a plate-shaped diffuser 130.
  • the first core section 110 has outer limbs 112 and a central limb 114, which are connected by a transverse yoke 116.
  • the second core section 120 has outer limbs 122, a middle limb 124 and a transverse yoke 126 which connects the outer limbs 122 and the middle limb 124 to one another.
  • the plate-shaped diffuser 130 has diffuser sections 132, 134 and 136 and spacers 137 and 139. It is noted that the plate-shaped diffuser 130 may correspond to the plate-shaped diffuser 2 that was described above with reference to FIG Fig. 1 is described.
  • the diffuser 130 is as shown in FIG Fig. 2a arranged between the core sections 110 and 120, so that the outer limbs 112, 122 and the central limbs 114, 124 rest on the support surfaces 134a, 134b on corresponding diffuser sections 132, 134 and 136 or are in contact there.
  • an air gap to the diffuser plate can be ground into the center of the two main cores.
  • the two air gaps in the main core set the main inductance of the magnetic core.
  • the leakage inductance is set by the two gaps (spacers 137, 139) formed in the diffuser 130. It is noted that the limb and the diffuser can be glued to one another, so that an adhesive is provided between the limb and the support surface of the diffuser.
  • surface sections of the diffuser sections 132, 134 and 136 in the support surfaces 134a, 134b are covered by the outer limbs 112, 122 and center limbs 114, 124, the surface sections being formed by exposed first material.
  • exposed areas made of the second material in the bearing surface in particular the spacers 137, 139 exposed in the bearing surfaces 134a, 134b, are not covered by the core legs 112, 122, 114, 124 of the core sections 110, 120. This means that the spacers 137, 139 are exposed in the winding spaces formed in the magnetic core 100 when the core sections 110, 120 are resting on them.
  • gaps are provided in the scattering path, which is provided by means of the scattering body 130 between the legs of the magnet core 100, through the spacers 137, 139, the magnetically effective cross section of each leg not being influenced by the scattering body 130 , 124 covered surface section in at least one bearing surface may be smaller than the magnetically effective cross section of at least one central limb 114, 124.
  • windings W1 and W2 are provided over the center legs 114, 124, with the windings W1 and W2 being separated by the diffuser 130 disposed therebetween.
  • Figure 2b shows an alternative embodiment of an inductive component with a scattering body insert schematically in a cross-sectional view, a scattering body 230 being inserted in a magnetic core 200 for guiding the scattering path.
  • the magnetic core 200 is formed from a first core section 210, a second core section 220 and a plate-shaped diffuser 230.
  • the first core section 210 has outer limbs 212 and a central limb 214, which are connected by a cross yoke 216.
  • the second core section 220 has outer limbs 222, a middle limb 224 and a transverse yoke 226, which connects the outer limbs 222 and the middle limb 224 to one another.
  • the plate-shaped diffuser 230 has diffuser sections 232, 234 and 236 and spacers 237 and 239. It is noted that the plate-shaped diffuser 230 may correspond to the plate-shaped diffuser 2 that was described above with reference to FIG Fig. 1 is described.
  • Diffuser 230 is shown in FIG Figure 2b arranged between the core sections 210 and 220, so that the central legs 214, 224 in the bearing surfaces 134a, 134b rest on the diffuser section 234 or rest there.
  • an air gap to the diffuser plate can be ground into the center of the two main cores.
  • the two air gaps in the main core set the main inductance of the magnetic core.
  • the leakage inductance is set by the two gaps (spacers 237, 239) formed in the diffuser 230.
  • the central limb 214, 224 and the diffuser 230 can be glued to one another, so that an adhesive is provided between the central limb 214, 224 and the diffuser portion 234.
  • surface sections of the diffuser section 234 are covered in the bearing surfaces by the central limbs 214, 224, the surface sections being formed by exposed first material.
  • exposed areas made of the second material in the bearing surface, in particular the spacers 137, 139 exposed in the bearing surfaces, are not covered by the center legs 214, 224. This means that the spacers 237, 239 are exposed when the core sections 210, 220 are in contact in the contact surfaces formed in the magnetic core 200.
  • a surface section covered by the central limbs 214, 224 can be smaller in at least one support surface than the magnetically effective cross section of at least one central limb 214, 224.
  • the inductive components shown also have windings W3 and W4 formed above the center legs 214, 224, which windings are separated by the scattering body 230 arranged therebetween.
  • the diffuser 230 is fitted into an air gap which is formed between the central limbs 214, 224 of the assembled core sections 210, 220.
  • the outer legs 212, 222 of the assembled core sections 210, 220 rest on one another. It is also possible here to adjust the leakage inductance by adjusting an additional air gap between the diffuser 230 and the outer legs 212, 222 of the magnetic core 200. Further setting options can be achieved by providing a material with low magnetic permeability between the diffuser 230 and the outer legs 212, 222 of the magnetic core 200, which results in a very compact and mechanically stable configuration of the in Figure 2b shown inductive component is achieved.
  • the inductive components according to the invention are shown in FIG Fig. 2a and 2 B very compact and still have great mechanical stability. Due to the advantageously provided scattering path in scattering bodies 130, 230, an advantageous saturation behavior of the scattering inductance is provided, the saturation curve falling extremely constantly up to the saturation point and only falling very late.
  • the inductive components shown are ideally suited for series production due to their low manufacturing tolerances. For example, transformers and chokes with advantageous leakage inductance values can be provided. In a particular illustrative example, a smoothing choke is provided.
  • first material and a second material the first material having a higher magnetic permeability than the second material.
  • first material and a second material the first material having a higher magnetic permeability than the second material.
  • a plate-shaped diffuser which is formed from three diffuser sections and two spacers. This does not represent a limitation of the invention and more than three diffuser sections can also be provided, provided a spacer is arranged between two diffuser sections.
  • the invention provides a magnetic core with a plate-shaped diffuser according to claim 1 and an inductive component according to claim 6.
  • a plate-shaped diffuser is provided as an insert in the magnetic core, through which at least one spacer (compared to the rest of the material of the diffuser) has a very low magnetic permeability penetrated along its thickness direction.
  • a spacing of the scatter body sections is smaller than a thickness of the plate-shaped scatter body measured along its thickness direction.
  • core legs are arranged over mutually opposing support surfaces of the plate-shaped scattering body, a scattering path being provided between the core legs by the plate-shaped scattering body.
  • the plate-shaped scattering body is a scattering plate with at least one integral gap which penetrates the scattering plate along its thickness direction and is formed from a material with low magnetic permeability.
  • the gap also penetrates the diffuser plate in its width direction and is designed as a gap along the longitudinal direction.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)

Claims (7)

  1. Noyau magnétique (100, 200) pour un composant inductif, comprenant:
    une première partie de noyau (110; 210) présentant une première branche de noyau (114; 214) et une deuxième partie de noyau (120; 220) présentant une deuxième branche de noyau (124; 224); et un corps parasite en forme de plaque (2; 130; 230) comme insert dans ledit noyau magnétique (100); 200) pour le composant inductif afin de régler une inductance de fuite souhaitée, dans lequel le corps parasite (2; 130; 230) comprend une première partie de corps parasite (11; 132; 232), une deuxième partie de corps parasite (13; 134; 234) et une troisième partie de corps parasite (15; 136; 236) chacune formée d'un premier matériau, une première entretoise (17; 137; 237) formée d'un deuxième matériau présentant une perméabilité magnétique inférieure à celle du premier matériau, la première entretoise (17; 137; 237) séparant la première partie de corps parasite (11; 132; 232) de la deuxième partie de corps parasite (13; 134; 234) et pénétrant dans le corps parasite en forme de plaque (2; 130; 230) dans le sens de l'épaisseur du corps parasite en forme de plaque (2; 130; 230), et
    une deuxième entretoise (19; 139; 239) constituée du deuxième matériau, la deuxième entretoise (19; 139; 239) séparant la troisième partie de corps parasite (15; 136; 236) de la deuxième partie de corps parasite (13; 134; 234) et traversant le corps parasite en forme de plaque (2; 130; 230) dans le sens de son épaisseur,
    dans lequel l'espacement des parties adjacentes respectives du corps parasite (11, 13, 15; 132, 134, -136; 232, 234, 236) est inférieur à l'épaisseur du corps parasite en forme de plaque (2; 130; 230) mesurée dans le sens de son épaisseur,
    dans lequel le premier matériau comprend un matériau de ferrite et le deuxième matériau comprend un matériau céramique,
    dans lequel les entretoises (17, 19; 137, 139; 237, 239) sont frittées dans le corps d'écartement en forme de plaque (2; 130; 230),
    dans lequel le corps de diffuseur en forme de plaque (2; 130; 230) est disposé entre les première et deuxième parties centrales (110, 120; 210, 220) de sorte que chaque partie centrale repose sur une surface de support du corps de diffuseur (2; 130; 230), et
    dans lequel la première branche centrale (114; 214) d'une surface d'appui couvre une première partie de surface formée d'un premier matériau exposé et la deuxième branche centrale (124; 224) de la surface d'appui opposée couvre une deuxième partie de surface formée d'un premier matériau exposé.
  2. Noyau magnétique (100; 200) selon la revendication 1, dans lequel la première partie de noyau (110; 210) comprend en outre une troisième branche de noyau (112; 212), et la troisième branche de noyau (112; 212) couvre, de manière adjacente à la première branche de noyau (114; 214), une troisième partie de surface formée d'un premier matériau exposé qui est séparée de la première partie de surface par une partie de surface formée d'un deuxième matériau exposé.
  3. Noyau magnétique (100; 200) selon la revendication 2, dans lequel la deuxième partie de noyau (120; 220) comprend une quatrième branche de noyau supplémentaire (122; 222) et la quatrième branche de noyau (122; 222) couvre, de manière adjacente à la deuxième branche de noyau (124; 224), une quatrième partie de surface formée d'un premier matériau exposé séparée de la deuxième partie de surface par une partie de surface formée d'un deuxième matériau exposé.
  4. Noyau magnétique (100; 200) selon l'une quelconque des revendications 1 à 3, dans lequel ledit noyau magnétique (100; 200) a une configuration de noyau double E, double C ou E-C.
  5. Noyau magnétique (100; 200) selon l'une quelconque des revendications 1 à 4, dans lequel le corps parasite en forme de plaque (130; 230) est disposé dans le noyau magnétique (100; 200) dans un entrefer formé par les première et deuxième branches du noyau (114, 124; 214, 224).
  6. Composant inductif comprenant:
    un noyau magnétique (100; 200) selon l'une des revendications 1 à 5;
    un premier enroulement (W1; W3) prévu sur la première branche du noyau (114; 214)
    un deuxième enroulement (W2; W4) prévu au-dessus de la deuxième branche du noyau (124; 224),
    dans lequel le corps parasite en forme de plaque (130; 230) est ah disposé dans le noyau magnétique (100; 200) entre les premier et deuxième enroulements (W1, W2; W3, W4).
  7. Composant inductif selon la revendication 6, dans lequel le composant inductif est conçu comme une bobine de lissage
EP15156744.3A 2014-03-26 2015-02-26 Noyau magnétique avec corps parasite en forme de plaque et composant inductif Active EP2924697B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014205560.1A DE102014205560A1 (de) 2014-03-26 2014-03-26 Plattenförmiger Streukörper als Einsatz im Magnetkern eines induktiven Bauelements, Magnetkern mit plattenförmigem Streukörper und induktives Bauelement

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KR102145921B1 (ko) 2017-01-03 2020-08-28 엘지이노텍 주식회사 인덕터 및 이를 포함하는 emi 필터
DE102017109499A1 (de) * 2017-05-03 2018-11-08 Valeo Siemens Eautomotive Germany Gmbh Inverter
CN118197775A (zh) * 2017-06-07 2024-06-14 埃里克斯解决方案公司 用于降低电化学槽中的流入溶液的离子浓度的方法
JP6893182B2 (ja) * 2018-01-17 2021-06-23 株式会社トーキン リアクトル及び昇圧回路
DE102018218042A1 (de) * 2018-10-22 2020-04-23 Würth Elektronik eiSos Gmbh & Co. KG Kern für induktives Bauelement und induktives Bauelement
CN110070984B (zh) * 2019-04-22 2020-11-13 南京邮电大学 一种无线供电线圈平面磁芯的结构
US11749452B2 (en) * 2020-03-10 2023-09-05 Delta Electronics (Thailand) Public Company Limited Leakage transformer
CN113380516B (zh) * 2020-03-10 2024-08-30 台达电子企业管理（上海）有限公司 耦合电感及功率模块

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DE102014205560A1 (de) 2015-10-01
JP2015188085A (ja) 2015-10-29
US10170237B2 (en) 2019-01-01
EP2924697A1 (fr) 2015-09-30
CN104952591A (zh) 2015-09-30

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