Inductive component

Abstract

The invention relates to an inductive component (1) for high-voltage applications. The inductive component (1) has a core (2) and a conductor (3) with a winding section (5) arranged circumferentially about the core (2). The winding section (5) extends circumferentially about the core (2) along an arc (K) with center angle (b) which is equal to: 45° ≤ b < 360°.

Description

[0001] Inductive component

[0002] The content of the German patent application DE 10 2022 204 625.0 is incorporated herein by reference.

[0003] The invention relates to an inductive component for high-current applications, in particular in the medium frequency range.

[0004] Inductive components for high-current applications are known. To reduce self-inductance at high currents, such inductive components typically have a low inductance, for example, in the nanohenry or low microhenry range. Figures 1 and 2 show a previously known inductor for high-current applications. An inductor 100 has a substantially cuboid-shaped core plate 102. The core plate 102 is surrounded on three sides by a rectangularly curved conductor bracket 103. A cover plate 104 is placed on the core plate 102 and the conductor bracket 103 arranged thereon.

[0005] It is the object of the present invention to improve an inductive component for high-current applications, in particular to improve the electromagnetic properties of the inductive component.

[0006] This object is achieved by an inductive component having the features recited in claim 1. The inductive component comprises a core and a conductor with a winding section arranged circumferentially of the core. The winding section extends circumferentially of the core along a circular arc with a center angle b, where: 45° < b < 360°. The center angle b < 360° means that the winding section does not extend completely around the core. The winding section does not form a complete winding. This is advantageous for high-current applications. The extension of the winding section along the circular arc results in a reduction in the length of the winding section per enclosed volume, particularly compared to rectangularly bent conductors. Reducing the length of the winding section results in material savings and reduced DC resistance.Conduction losses and unwanted heat generation are reduced. The inductive component exhibits improved electrical and mechanical properties. The inductive component is also referred to below as an inductor or high-current inductor.

[0007] The inductive component is designed for high-current applications, particularly in the medium frequency range. High-current applications here are understood to mean applications with a current flow of at least 10 A, in particular at least 15 A, in particular at least 20 A. The inductive component is designed in particular for currents in the range from 10 A to 125 A, in particular from 15 A to 125 A, in particular from 20 A to 125 A. The medium frequency range has frequencies in particular from 100 kHz to 1 MHz, in particular from 250 kHz to 750 kHz, for example from approximately 500 kHz. Frequencies in these ranges are also referred to as medium frequencies or, in English, as radio frequencies. The inductive component is preferably designed for operation in these frequency ranges.

[0008] The extension of the winding section along the circular arc is to be understood in particular such that the winding section runs approximately in the shape of a circular arc in the circumferential direction. For example, the winding section can be curved, in particular in the shape of a circular arc. However, an extension along the circular arc within the meaning of the invention includes other approximately curved, in particular circular arc-shaped, courses of the winding section. For example, an approximation to the circular arc can also be achieved by a polygonal course of the winding section. For example, the winding body can run along the contour of a polygon with n corners, where n is at least 5, in particular at least 6, preferably greater than 6. The winding section has, for example, at least 3 corners each with a 180° central angle.Compared to a rectangular conductor bracket, the length of the winding section per enclosed volume is significantly reduced.

[0009] Preferably, the winding section extends along the circular arc in such a way that the entire area of ​​a circular segment surrounded by the circular arc is enclosed by the winding section.

[0010] The winding section can in particular have a length in the circumferential direction which deviates from the arc length of the circular arc by a maximum of 20%, in particular by a maximum of 10%, in particular by a maximum of 5%.

[0011] The advantages of the winding section extending along the circular arc are independent of the size of the inductive component, in particular independent of the radius of the circular arc. In particularly suitable inductive components, the circular arc can have a radius of between 1 mm and 5 mm, in particular between 1 mm and 2.3 mm, in particular between 1.5 mm and 2.1 mm. The radius can be, for example, approximately 2.05 mm. The conductor can essentially consist of the winding section. The conductor can have additional conductor sections adjoining the winding section. For example, the conductor can have electrodes for contacting the winding section. For example, the electrodes can be formed by extensions of the winding section. The electrodes can also be connected to the winding section at its end.

[0012] The conductor, in particular the winding section and / or the electrodes, preferably comprises a metal with high conductivity. For example, the conductor can be made of copper.

[0013] The core can have the shape of a general cylinder, particularly in a core section circumferentially surrounded by the winding section. A core section circumferentially surrounded by the winding section is also referred to below as a winding body. A cylinder axis of the core, in particular of the winding body, can in particular be perpendicular to a plane in which the circular arc along which the winding section extends runs. The cylinder axis can, for example, run through a center point corresponding to the circular arc. A base area of ​​the core, in particular of the winding body, can, for example, lie in the plane of the circular arc. The base area of ​​the core, in particular of the winding body, can, for example, correspond to a contour of the winding section in the plane of the circular arc. Preferably, the base area can essentially have the shape of a circular segment surrounded by the circular arc. The core is, in particular, magnetic.The core preferably consists of a ferrite, especially a soft magnetic ferrite. Suitable ferrites are, in particular, manganese-zinc ferrites and / or nickel-zinc ferrites.

[0014] A center angle according to claim 2 has proven particularly suitable. Preferably, the center angle b is approximately 180°. The winding section forms, in particular, a semi-circular winding. This enables a compact design while simultaneously maintaining a large enclosed volume. A base area of ​​the core, in particular of the winding body, is, in particular, semicircular.

[0015] An inductive component according to claim 3 ensures improved mechanical, magnetic, and / or electrical properties. An arc-shaped, in particular circular arc-shaped, design of the winding section is stable and easy to manufacture and has a particularly favorable ratio between enclosed volume and length of the winding section. For example, the winding section can be bent approximately in the shape of a circular arc around the core. Preferably, a curvature of the arc-shaped winding section deviates from the curvature of the circular arc by a maximum of 20%, in particular by a maximum of 15%, in particular by a maximum of 10%. Kinks in the conductor are avoided. The winding section is preferably designed as a circular arc, for example as a quarter, half, or three-quarter arc. The winding section is particularly preferably designed as a half arc.

[0016] An inductive component according to claim 4 ensures improved mechanical and / or electrical properties. The flat wire or bracket can be easily shaped, in particular bent, into the shape corresponding to the extension along the circular arc. The resulting winding section is stable. Furthermore, a flat wire or bracket is particularly suitable for high currents.

[0017] Preferably, the conductor in the winding section has a rectangular cross-section with a broad side and a narrow side. An exemplary width of the broad side can be between 1 mm and 5 mm, for example, approximately 2.5 mm. A thickness of the conductor along the narrow side can be, for example, between 0.1 mm and 1 mm, in particular approximately 0.5 mm.

[0018] An inductive component according to claim 5 ensures improved mechanical, magnetic, and / or electrical properties. The broad side of the conductor can, in particular, be parallel to a cylindrical axis of the core, in particular of the winding body. Preferably, the broad side runs along a lateral surface of the core. A corresponding arrangement of the conductor enables simple manufacturing, in particular simple bending of the winding section around the core. The conductor contributes with its entire broad side to the volume enclosed by the current flow. This enables a particularly large magnetically active volume for given dimensions, in particular for a given length, of the conductor.

[0019] An inductive component according to claim 6 has a compact design and high inductance per volume. It has been shown that the magnetic flux runs essentially within the circular segment corresponding to the circular arc. Regions of the core outside the circular segment therefore contribute little to the magnetic properties of the inductive component. Because the cross-section of the core lies entirely within the circular segment, it is possible to save core material without adversely affecting the magnetic properties of the core, in particular the magnetic flux within the core.

[0020] The inductor is compact and lightweight. It can also be manufactured cost-effectively. The inductance per unit volume is improved.

[0021] A circular segment corresponding to a circular arc is understood to mean that the circular arc encloses the circular segment. In particular, the circular segment has the same radius, the same center point, and the same central angle as the circular arc. For example, with a central angle b of 180°, the circular segment is a semicircle.

[0022] The cross-section of the core is defined, in particular, in the plane of the circular arc. The cross-section of the core can, for example, be defined perpendicular to a cylindrical axis of the core. The cross-section of the core corresponds, in particular, to a base area of ​​the core, in particular of the winding body.

[0023] An inductive component according to claim 7 ensures particularly good magnetic and / or mechanical properties. The greatest possible coverage of the circular segment by the core cross-section largely utilizes the area surrounded by the winding section. The core, in particular the winding former, has a large cross-sectional area for the magnetic flux while simultaneously being compact in design. Preferably, the core cross-section essentially fills the circular segment. The inductive component has a high inductance while simultaneously being compact in design. The inductance per unit volume is increased. Particularly preferably, the core cross-section essentially has a cross-sectional area corresponding to the circular segment. The cross-sectional area of ​​the core, in particular a base area of ​​the winding former, can be essentially semicircular.

[0024] An inductive component according to claim 8 has particularly advantageous magnetic and / or mechanical properties. It was recognized that the magnetic flux in the region of the center of the circular arc is low. The recess in the center region therefore makes it possible to save core material without significantly impairing the magnetic properties of the core. The inductance per unit volume is further increased. Less core material leads to a lower weight and lower manufacturing costs of the inductive component.

[0025] The gap can, in particular, be formed in the shape of a circular segment. A central angle of the gap preferably corresponds to the angle b. A radius of the gap is, in particular, smaller than a radius of the circular arc along which the winding section extends. A ratio of the radius of the gap to the radius of the circular arc along which the winding section extends is, for example, between 0.1 and 0.6, in particular between 0.15 and 0.5, in particular between 0.2 and 0.4, for example, approximately 0.25. The gap can, in particular, be semicircular.

[0026] Particularly preferably, the inductor has an inductance per volume of at least 0.65 nH / mm 3 , in particular at least 0.70 nH / mm 3 , in particular at least 0.75 nH / mm 3, is. An inductive component according to claim 9 has particularly advantageous mechanical and / or magnetic properties. The core preferably has a flange at each of the opposite ends. The at least one flange adjoins the winding body, in particular in the direction of a cylinder axis. The at least one flange preferably has a larger cross section than the winding body. Particularly preferably, the at least one flange projects radially over a cross section of the winding body in an angular range in which the winding body extends along a circular arc. The at least one flange preferably has the same cross-sectional contour as a core section which is surrounded on the circumferential side by the winding section. For example, the at least one flange has a cross section in the shape of a segment of a circle, in particular a semicircular cross section.At least one flange increases the core volume.

[0027] Particularly preferably, the winding section can be arranged between two end flanges. This results in a stable arrangement of the winding section. The end flanges shield the conductor.

[0028] An inductive component according to claim 10 has high stability and good electromagnetic shielding. The conductor is shielded circumferentially of the winding section by the outer core. The outer core also leads to a stable arrangement of the winding section between the core and the outer core. The outer core also increases the core volume for the magnetic flux. This improves the magnetic properties, in particular, the inductance is increased. An inductive component according to claim 11 has a compact design. An outer core that is curved, in particular circular, in the circumferential direction of the core is optimally adapted to the winding section extending along the circular arc, in particular to a winding section that is curved, in particular circular, in the shape of a circle. A cross-section of the outer core efficiently covers the areas of high magnetic flux.

[0029] The outer core surrounds the winding section, particularly in a partially annular shape. A partial annular region covered by the outer core corresponds, in particular, to the center angle b. The thickness of the outer core in the radial direction is, for example, between 0.3 mm and 2 mm, in particular between 0.5 mm and 1 mm, for example, approximately 0.7 mm.

[0030] An inductive component according to claim 12 exhibits high stability and good shielding of the conductor. Due to the arrangement of the winding section in the slot, it is also shielded at the end face. The winding section is held stably and reliably in the slot.

[0031] Preferably, the groove has a cross-section which corresponds to the cross-section of the conductor in the winding section, in particular the cross-section of the flat wire or bracket used.

[0032] An inductive component according to claim 13 ensures improved magnetic and / or mechanical properties. The air gap allows the core, winding section, and outer core to be easily positioned relative to one another. Manufacturing inaccuracies can be compensated. The air gap also increases the magnetic saturation of the inductive component. In particular, it is possible for the air gap to form a receiving space for the winding section. The winding section is securely and stably arranged between the core and outer core.

[0033] An inductive component according to claim 14 ensures improved magnetic and / or mechanical properties. The various core sections can be easily positioned relative to one another. In particular, the assembly of the inductive component is simplified, for example, by allowing the core sections to be pushed into a recess in the outer core from different sides. This is particularly advantageous for cores with flanges arranged at the ends.

[0034] Preferably, different core sections are separated from one another along a cylinder axis of the core. The different core sections can form different core sections along the cylinder axis. For example, two core sections can form two halves of the core. The core sections are in particular symmetrical to one another. The core sections can, for example, be designed identically.

[0035] An inductive component according to claim 15 ensures improved magnetic and / or mechanical properties. The formation of the core air gap increases magnetic saturation. The air gap simplifies the relative arrangement of the core components.

[0036] The inductive component can preferably have an air gap between an outer core and the core and / or a core air gap between different core sections. By varying the air gap and / or core air gap, in particular, magnetic properties and / or electrical properties, for example, magnetic saturation and / or saturation current, can be influenced. An exemplary gap size of the air gap and / or core air gap is in particular between 0.03 mm and 0.15 mm, in particular between 0.03 mm and 0.065 mm.

[0037] Further features, advantages, and details of the invention will become apparent from the following description of several exemplary embodiments. They show:

[0038] Fig. 1 is a perspective view of a prior art high current inductor,

[0039] Fig. 2 is an exploded view of the high current inductor according to Fig. 1,

[0040] Fig. 3 is a perspective view of an inductive component according to a first embodiment,

[0041] Fig. 4 is an end view of the inductive component according to Fig. 3,

[0042] Fig. 5 is a perspective view of a core of the inductive component according to Fig. 3,

[0043] Fig. 6 shows a cross section through the inductive component according to Fig. 3 along a sectional plane VI-VI, Fig. 7 shows a perspective view of a core section of a core of an inductive component according to a further embodiment,

[0044] Fig. 8 is a perspective view of an inductive component according to a further embodiment,

[0045] Fig. 9 is an end view of the inductive component according to Fig. 8,

[0046] Fig. 10 is a perspective view of an outer core of the inductive component according to Fig. 8,

[0047] Fig. 11 is a perspective view of an inductive component according to a further embodiment,

[0048] Fig. 12 is an end view of the inductive component according to Fig. 11,

[0049] Fig. 13 is a perspective view of an inductive component according to a further embodiment, and

[0050] Fig. 14 is an end view of the inductive component according to Fig. 13.

[0051] With reference to Figs. 3 to 6, a first embodiment of an inductive component for high-current applications is shown in the form of an inductor 1. The inductor 1 has a core 2, a conductor 3, and an outer core 4. The components of the inductor 1 are described with reference to the orthogonal coordinate system with the axes x, y, z shown in the figures.

[0052] The core 2 and the outer core 4 are made, for example, of soft magnetic ferrites, in particular manganese-zinc ferrite and / or nickel-zinc ferrite. The conductor 3 consists of a conductive metal, in particular copper.

[0053] The conductor 3 has a winding section 5 arranged circumferentially of the core 2. At the end of the winding section 5, the conductor 3 has two electrodes 6 for contacting the winding section 5. The conductor 3 comprises a flat wire forming the winding section 5. The electrodes 6 are designed as wire extensions of the flat wire. The flat wire has a broad side of width B running parallel to the x-direction. The broad side of the flat wire faces the core 2. Perpendicular to the broad side, the flat wire has a narrow side of thickness d.

[0054] The core 2 has a core section in the form of a winding body 7, which is surrounded on the circumference by the winding section 5. The winding body 7 is designed as a general cylinder. A cylinder axis 8 of the winding body 7 extends along the x-axis. The core 2 has a length L in the direction of the cylinder axis 8. A base area of ​​the cylinder lies in the zy-plane. The base area of ​​the winding body 7 is semicircular. The base area of ​​the winding body 7 corresponds to a circular segment with a central angle b and a radius R. The central angle b is 180° in the exemplary embodiment shown. In the direction of the cylinder axis 8, a flange 9 of the core 2 adjoins the end face of the winding body 7. The flanges 9 have the same cross-sectional shape perpendicular to the cylinder axis 8 as the winding body 7. The cross section of the flanges 9 perpendicular to the cylinder axis 8 is semicircular.The radius of the cross section of the flanges 9 is essentially increased by a thickness d of the narrow side of the flat wire forming the winding section 5. A length of the winding body 7 in the direction of the cylinder axis 8 essentially corresponds to a width B of the broad side of the flat wire forming the winding section 5. Due to the smaller cross-sectional radius of the winding body 7, a groove-shaped receiving space 10 is formed for the winding section 5 of the conductor 3.

[0055] The core 2 has two core sections 11. The core 2 is in two parts. The core sections 11 lie opposite one another in the direction of the cylinder axis 8. The core sections 11 are spaced apart from one another in the direction of the cylinder axis 8. A core air gap 12 is formed between the core sections 11. The core air gap 12 has a gap dimension t in the direction of the cylinder axis 8. The core air gap 12 is formed centrally of the core 2 with respect to the cylinder axis 8.

[0056] The core sections 11 are mirror-symmetrical with respect to a mirror plane defined in the yz plane at the level of the core air gap 12. The core sections 11 form two core halves. Each core section 11 comprises a part of the winding body 7 and one of the flanges 9.

[0057] The winding section 5 of the conductor 3 is arranged circumferentially of the winding body 7 of the core 2. The winding section 5 is arranged in the groove-shaped receiving space 10 between the flanges 9. The winding section 5 extends along a circular arc K with the center angle b. The winding section 5 forms half a winding of the conductor 3. In the illustrated embodiment, the winding section is circularly arc-shaped. The winding section 5 runs in the circumferential direction of the core 2 along the circular arc K. The winding section 5 is semi-arc-shaped.

[0058] A broad side of the winding section 5 preferably rests against a lateral surface of the winding body 7.

[0059] The cross section of the core 2 in the region of the winding body 7, defined perpendicular to the cylinder axis 8, lies within a circular segment S corresponding to the circular arc K. In the present exemplary embodiment, the cross section of the core 2 in the region of the winding body 7 essentially corresponds to the circular segment S. The cross section of the core 2 in the region of the winding body 7 essentially completely fills the circular segment S.

[0060] The outer core 4 circumferentially surrounds the core 2 and the winding section 5 of the conductor 3. The outer core 4 is formed in the shape of a circular arc in the circumferential direction of the core 2. The outer core 4 covers a circular arc with a central angle b.

[0061] The outer core 4 is spaced from the core 2 and the winding section 5 by an air gap 13 extending circumferentially around the core 2. The air gap 13 has a gap dimension T. The outer core 4 is designed as a general cylinder, whose cylinder axis runs parallel to the cylinder axis 8 in the x-direction. The outer core 2 covers the entire length L of the core 2 in the direction of the cylinder axis 8.

[0062] The base of the outer core 4 lies perpendicular to the x-direction in the yz-plane. The base is in the shape of a pitch circle ring with a center angle b and a ring width D. The inner radius of the pitch circle ring essentially corresponds to the sum of the radius R of the circular arc K, the thickness d of the flat wire, and the gap dimension T of the air gap 13.

[0063] The extension of the winding section 5 along the circular arc K has the advantage that a larger volume is enclosed per length of the winding section 5. This allows the length of the winding section 5 to be reduced while maintaining the same inductance. As a result, the winding section 5 has a lower DC resistance.

[0064] The cross-section of core 2, located within the circular segment S, has the advantage of reducing the core volume compared to a circular-cylindrical core. This increases the inductance per unit volume of the inductor.

[0065] The winding section 5 is reliably shielded by the flanges 9 and the outer core 4.

[0066] The advantages of inductor 1 are independent of the specific dimensions of its components. Compared to the previously known inductor shown in Figs. 1 and 2, inductor 1 has a volume approximately 27% smaller with the same maximum extension in the x, y, and z directions. With comparable inductance, the inductance per unit volume is significantly increased.

[0067] The material consumption and weight as well as the manufacturing costs of inductor 1 are reduced.

[0068] For example, the previously known inductor 100 has a length in the x-direction of 6 mm, an extension in the y-direction of 6.8 mm and an extension in the z-direction of 3.4 mm and a volume of 122 mm 3 The inductor 1 has a volume of approximately 88 mm at corresponding maximum dimensions in the x, y and z directions. 3 on.

[0069] A further advantage of the inductor 1 is that its dimensions, in particular the radius R of the circular arc K, the center angle b, the width B of the conductor 3, the thickness d of the conductor 3, the ring width D of the outer core 4, the length L, the gap dimension t of the core air gap 12, and / or the gap dimension T of the air gap 13, can be varied essentially independently of one another. The inductor 1 can be flexibly adapted to the respective requirements.

[0070] With reference to Fig. 7, another embodiment of an inductor is described. Components that have already been described in connection with the embodiment in Figs. 3 to 6 bear the same reference numerals. Structurally different but functionally identical components bear the same reference numerals with a suffix "a."

[0071] The inductor differs from the inductor shown in Figs. 3 to 6 only in the design of the core. Fig. 7 shows a core section 11a of the core. The core section 11a has a flange 9a and a taper to form a winding body 7a. The core section 11a has a recess 14 formed around the center point M. The recess 14 has a semicircular cross-section perpendicular to the cylinder axis 8 around the center point M with a radius r.

[0072] It has been shown that the magnetic flux is low in a cross-sectional area surrounding the center point M. The recess 14 therefore allows for additional core material to be saved without compromising the magnetic flux within the core. A core composed of core sections 11a therefore enables a further increase in the inductance per volume.

[0073] Compared to the embodiment shown in Figs. 3 to 6, the tapered part of the core section 11a forming the winding body 7a has a greater length in the direction of the cylinder axis 8. This allows a flat wire of greater width B to be mounted on the core. Alternatively, it is also possible for the flat wire to have a smaller width B than the length of the winding body 7a in the direction of the cylinder axis. The core volume is adjustable independently of the width of the winding section.

[0074] Figs. 8 to 10 show a further exemplary embodiment of an inductive component in the form of an inductor 1b. Components that have already been described in connection with the exemplary embodiments in Figs. 3 to 7 bear the same reference numerals. Structurally different but functionally identical components bear the same reference numerals with a suffix "b." The inductor 1b has a conductor 3b whose electrodes 6b are wider than the flat wire forming the winding section 5. This simplifies the connection and contacting of the electrodes 6b.

[0075] A groove 15 is provided on the inner side of the outer core 4b facing the core 2b. The groove 15 serves to accommodate the winding section 5 of the conductor 3b. The winding section 5 is arranged in the groove 15.

[0076] The core 2b is constructed in one piece. The core 2b has no air gap between the individual core sections. The core 2b is particularly stable and structurally simple.

[0077] The core 2b has a semicircular cross-section in the yz-plane. The cross-section is constant along the cylinder axis 8. The core 2b has a simple structure.

[0078] Figs. 11 and 12 show a further exemplary embodiment of an inductive component in the form of an inductor 1c. Components that have already been described in connection with the exemplary embodiments in Figs. 3 to 10 bear the same reference numerals. Structurally different but functionally identical components bear the same reference numerals with a suffix "c."

[0079] The inductor 1c differs from the inductor 1b described in Figs. 8 to 10 only in the design of the core 2c. The outer core 4b and the conductor 3b are identical. In particular, the winding section 5 of the conductor 3b is arranged within a groove 15 of the outer core 4b. The core 2c has two core sections 11c spaced apart in the direction of the cylinder axis 8. A core air gap 12c is formed between the core sections 11c.

[0080] The core sections 11c of the core 2c are of identical design. The core sections 11c have a cross-section perpendicular to the cylinder axis 8 that remains constant along the cylinder axis 8. The cross-section of the core sections 11c corresponds to the cross-section of the core 2c. The cross-section is partially circular. A semicircular recess 14c with radius r is formed around the center point M. The radius r of the recess 14c forms an inner radius of the partially circular cross-section. The outer radius of the cross-section of the core 2c corresponds to the radius R of the circular arc K along which the winding section 5 runs. The core 2c rests with its outer surface against the outer core 4b or against an inner side of the flat wire forming the winding section 5. There is no air gap between the outer core 4b and the core 2c.

[0081] Figures 13 and 14 show another exemplary embodiment of an inductive component in the form of the inductor Id. Components that have already been described with reference to the previous exemplary embodiments bear the same reference numerals. Structurally different but functionally identical components bear the same reference numerals with a suffix "d."

[0082] The inductor 1d has a one-piece core 2d without a core air gap. The core 2d has a partially circular cross-section with a center angle b. A semicircular recess 14 with a radius r is formed in the area of ​​the center point M. The outer radius R of the cross-section of the core 2d corresponds to the radius R of the circular arc K along which the winding section 5 of the conductor 3b runs. The winding section 5 rests against a lateral surface of the core 2d. The outer core 4d has a partially circular cross-section that remains constant along the cylinder axis.

[0083] An air gap 13d is formed between the core 2d and the outer core 4d. The air gap 13d has a gap dimension T that essentially corresponds to a thickness d of the flat wire forming the winding section 5.

Claims

Patent claims 1. Inductive component for high current applications, comprising a core (2; 2b; 2c; 2d) and a conductor (3; 3b) with a winding section (5) arranged circumferentially of the core (2; 2b; 2c; 2d), wherein the winding section (5) extends circumferentially of the core (2; 2b; 2c; 2d) along a circular arc (K) with central angle b, for which: 45° < b < 360°.

2. Inductive component according to claim 1, characterized in that the central angle b is: 90° < b < 270°, in particular 135° < b < 225°, in particular 160° < b < 200°, in particular 170° < b < 190°, in particular 175° < b < 185°.

3. Inductive component according to one of claims 1 or 2, characterized in that the winding section (5) is arc-shaped, in particular circular arc-shaped.

4. Inductive component according to at least one of claims 1 to 3, characterized in that the winding section (5) is formed from a flat wire or a bracket.

5. Inductive component according to claim 4, characterized in that the flat wire or the bracket faces the Kem (2; 2b; 2c; 2d) with its broad side. An inductive component according to at least one of claims 1 to 5, characterized in that a cross-section of the core (2; 2b; 2c; 2d) in a core section circumferentially surrounded by the winding section (5) lies completely within a circular segment (S) corresponding to the circular arc (K). An inductive component according to at least one of claims 1 to 6, characterized in that a cross-section of the core (2; 2b; 2c; 2d) in a core section circumferentially surrounded by the winding section (5) covers at least 55%, in particular at least 65%, in particular at least 75%, in particular at least 85%, in particular at least 90%, in particular at least 95% of the area of ​​a circular segment (S) corresponding to the circular arc (K). Inductive component according to at least one of claims 1 to 7, characterized in that a cross-section of the core in the region of a center point (M) of the circular arc (K) has a discharge (14; 14c; 14d).Inductive component according to at least one of claims 1 to 8, characterized in that the Kem (2; 2b; 2c; 2d) has at least one end-arranged flange (9; 9a). Inductive component according to at least one of claims 1 to 9, characterized by. An outer core (4; 4b; 4d) circumferentially surrounding the winding section (5) of the conductor (3; 3b). An inductive component according to claim 10, characterized in that the outer core (4; 4b; 4d) is arc-shaped, in particular circular arc-shaped. An inductive component according to one of claims 10 or 11, characterized in that the winding section (5) is arranged in a groove (15) of the outer core (4b). An inductive component according to at least one of claims 10 to 12, characterized in that an air gap (13; 13d) is formed between the core (2; 2b; 2d) and the outer core (4; 4b; 4d). Inductive component according to at least one of claims 1 to 13, characterized in that the core (2; 2c) comprises several, in particular two, core sections (11; 11b; 11c). Inductive component according to claim 14, characterized in that a core air gap (12; 12c) is formed between at least two core sections (11; 11b; 11c).

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