Inductive component

Abstract

An inductive component (1) for high-current applications will be described. The inductive component (1) includes a core (2) and a conductor (3) having a winding portion (5) arranged circumferentially around the core (2). The winding portion (5) extends circumferentially around the core (2) along an arc (K) having a central point angle b. Here, 45° ≦ b < 360°.

Description

Technical Field

[0001] The content of German Patent Application DE 10 2022 204 625.0 is incorporated herein by reference.

[0002] The present invention relates to inductive components for high-current applications, particularly in the medium-frequency range.

Background Art

[0003] Inductive components for high-current applications are known. In order to reduce the self-inductance at high currents, this type of inductive component generally has a low inductance in the range of, for example, below nanohenries or microhenries. FIGS. 1 and 2 show inductors for high-current applications that are already known. Inductor 100 has a substantially rectangular parallelepiped core plate 102. Core plate 102 is surrounded on three sides by a conductor bracket 103 bent in a rectangular shape. Cover plate 104 is attached to core plate 102 and conductor bracket 103 disposed thereon.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to improve inductive components for high-current applications, particularly to improve the electromagnetic characteristics of the inductive components.

Means for Solving the Problems

[0005] This object is achieved by an inductive component having the features described in claim 1. The inductive component comprises a core and a conductor having a winding portion arranged circumferentially around the core. The winding portion extends circumferentially around the core along an arc having a central point angle b, where 45° ≤ b < 360°. The central point angle b < 360° means that the winding portion does not extend over the entire circumference of the core. The winding portion does not form a complete winding. This is advantageous for high-current applications. The spread of the winding portion along the arc reduces the length of the winding portion per unit of the enclosed volume, especially with respect to a conductor bent into a rectangle. By shortening the length of the winding portion, material is saved and the DC resistance is reduced. The line losses and the generation of unwanted heat are reduced. The electrical and mechanical properties of the inductive component are improved. The inductive component is also referred to as an inductor or a high-current inductor in the following text.

[0006] The inductive component is designed especially for high-current applications in the medium-frequency range. Here, high-current applications should be understood to mean, in particular, applications in which a current of at least 10 A, in particular at least 15 A, in particular at least 20 A flows. The inductive component is designed especially 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 includes, in particular, frequencies from 100 kHz to 1 MHz, in particular from 250 kHz to 750 kHz, for example a frequency of about 500 kHz. Frequencies in these ranges are also referred to as medium frequencies or radio frequencies. The inductive component is preferably designed to operate in these frequency ranges.

[0007] The range of the winding portion along the arc should be understood, in particular, such that the winding portion extends in a substantially arc shape in the circumferential direction. For example, the winding portion can be bent into an arc shape, particularly an arc shape. However, the extension along the arc in the meaning of the present invention includes other profiles of the winding portion that are substantially arc-shaped, particularly arc-shaped. For example, the polygonal profile of the winding portion can also approximate an arc. For example, the coil former can extend along a polygonal contour having n corners, where n is at least 5, particularly at least 6, preferably 6 or more. The winding portion has, for example, at least three corners for each 180° center point angle. Compared with a rectangular conductor bracket, in this method, the length of the winding portion per unit of the enclosed volume is significantly shortened.

[0008] The winding portion preferably extends along the arc such that the entire area of the segment of the circle enclosed by the arc is enclosed by the winding portion.

[0009] The winding portion can have a length that differs by a maximum of 20%, particularly a maximum of 10%, particularly a maximum of 5% with respect to the circumferential length of the arc.

[0010] The advantage of the winding portion extending along the arc is independent of the size of the inductive component, particularly independent of the radius of the arc. In a particularly suitable inductive component, the arc can have a radius between 1 mm and 5 mm, particularly between 1 mm and 2.3 mm, particularly between 1.5 mm and 2.1 mm. The radius can be, for example, about 2.05 mm.

[0011] The conductor can consist essentially of the winding portion. The conductor can have additional conductor portions adjacent to the winding portion. For example, the conductor can have electrodes for contacting the winding portion. For example, the electrodes can be formed by the extension of the winding portion. The electrodes can also be connected to the winding portion at the end side of the winding portion.

[0012] The conductor, particularly the winding portion and / or the electrodes, preferably contains a highly conductive metal. For example, the conductor can be made of copper.

[0013] The core, particularly in the core part surrounded circumferentially by the winding part, can have a general cylindrical shape. The core part surrounded circumferentially by the winding part is also called a coil former in the following text. The cylindrical axis of the core, particularly of the coil former, can be perpendicular, in particular, to the plane in which the arc along which the winding part extends runs. The cylindrical axis can pass through, for example, the central point corresponding to the arc. The bottom surface (base region) of the core, particularly of the coil former, can be located, for example, within the plane of the arc. The bottom surface of the core, particularly of the coil former, can correspond, for example, to the contour of the winding part in the plane of the arc. The bottom surface can preferably have substantially the shape of a segment of a circle surrounded by the arc.

[0014] The core is particularly magnetic. The core preferably consists of ferrite, particularly soft magnetic ferrite. Suitable ferrites are, in particular, manganese-zinc ferrite and / or nickel-zinc ferrite.

[0015] It has been proven that the central point angle according to claim 2 is particularly suitable. The central point angle b is preferably about 180°. The winding part forms, in particular, a semi-circular arc-shaped winding. This enables a compact design with a large enclosed volume. The bottom surface of the core, particularly of the coil former, is particularly semi-circular.

[0016] The inductive component according to claim 3 ensures an improvement in mechanical, magnetic and / or electrical properties. The arc-shaped, particularly circular-arc-shaped embodiment of the winding part can be manufactured in a stable and simple manner and has a particularly effective ratio between the enclosed volume and the length of the winding part. For example, the winding part can be bent substantially in an arc around the core. The curvature of the circular-arc-shaped winding part deviates from the curvature of the arc by preferably at most 20%, particularly at most 15%, particularly at most 10%. Bending of the conductor is avoided. The winding part is preferably embodied as an arc, for example as a quarter arc, a half arc, or a three-quarter arc. The winding part is particularly preferably embodied as a semi-arc.

[0017] The inductive component according to claim 4 ensures an improvement in mechanical and / or electrical properties. The flat wire or bracket can be shaped in a simple manner into a shape corresponding to a range along an arc, and can in particular be bent. The resulting winding part is stable. Furthermore, the flat wire or bracket is particularly suitable for high currents.

[0018] The conductor preferably has a rectangular cross-section having a wide face and a narrow face in the winding part. An exemplary width of the wide face can be between 1 mm and 5 mm, for example about 2.5 mm. The thickness of the conductor along the narrow face can be, for example, between 0.1 mm and 1 mm, in particular about 0.5 mm.

[0019] The inductive component according to claim 5 ensures an improvement in mechanical, magnetic and / or electrical properties. The wide face of the conductor can in particular be parallel to the cylindrical axis of the core, in particular the coil former. The wide face preferably extends along the side face of the core. By the corresponding arrangement of the conductor, the manufacturing is simplified, and in particular the winding part around the core can be easily bent. The conductor contributes, by its entire wide face, to the volume surrounded by the flow of the current. Thereby, a particularly large magnetically active volume can be obtained with a predetermined dimension of the conductor, in particular a predetermined length.

[0020] The inductive component according to claim 6 has a compact design and a high inductance per unit volume. It has been found that the magnetic flux flows substantially within a segment of a circle corresponding to an arc. Therefore, the region of the core outside the segment of the circle contributes little to the magnetic properties of the inductive component. Since the cross-section of the core is completely within the segment of the circle, it is possible to save core material without adversely affecting the magnetic properties of the core, in particular the magnetic flux within the core. The inductor is compact and lightweight. Furthermore, the inductor can be manufactured in a cost-effective manner. The inductance per unit volume is improved.

[0021] The segment of the circle corresponding to the arc should be understood as surrounding the arc of the circle. In particular, the segment of the circle has the same radius, the same center point, and the same center point angle as the arc. When the center point angle b is 180°, the segment of the circle is, for example, a semi - circle.

[0022] The cross - section of the core is defined, in particular, within the plane of the arc. The cross - section of the core can be defined, for example, perpendicular to the cylindrical axis of the core. The cross - section of the core corresponds, in particular, to the bottom surface of the core, especially to the bottom surface of the coil former.

[0023] The inductive component according to claim 7 ensures particularly good magnetic and / or mechanical properties. Due to the highest possible coverage rate of the segment of the circle by the core cross - section, the area surrounded by the winding part is utilized to a large extent. The core, especially the coil former, has a large cross - sectional area for magnetic flux with a compact design. The core cross - section preferably substantially fills the segment of the circle. The inductive component has a high inductance with a compact design. The inductance per unit volume increases.

[0024] The cross - section of the core particularly preferably has a cross - sectional area substantially corresponding to the segment of the circle. The cross - sectional area of the core, especially the bottom surface of the coil former, can be substantially semi - circular.

[0025] The inductive component according to claim 8 has particularly advantageous magnetic and / or mechanical properties. It has been found that the magnetic flux in the region of the center point of the arc is low. Therefore, thanks to the notch in the region of the center point, it is possible to save core material without substantially affecting the magnetic properties of the core. The inductance per unit volume further increases. The reduction of the core material leads to the weight reduction of the inductive component and the reduction of the manufacturing cost.

[0026] The notch can particularly be in the form of a segment of a circle. The notch of the central point angle preferably corresponds to the angle b. The radius of the notch is particularly smaller than the radius of the arc along which the winding portion extends. The radius of the notch is particularly smaller than the radius of the arc along which the winding portion extends. The ratio of the radius of the notch to the radius of the arc along which the winding portion extends is, for example, from 0.1 to 0.6, particularly from 0.15 to 0.5, particularly from 0.2 to 0.4, and is, for example, about 0.25. The notch can particularly be semi-circular.

[0027] The inductor particularly preferably has an inductance per unit volume of at least 0.65 nH / mm 3 and particularly at least 0.70 nH / mm 3 and particularly at least 0.75 nH / mm 3

[0028] The inductive component according to claim 9 has particularly advantageous mechanical and / or magnetic properties. The core preferably has flanges at each of its opposite ends. At least one flange is particularly adjacent to the coil former in the direction of the cylindrical axis. At least one flange preferably has a larger cross-sectional area than the coil former. At least one flange particularly preferably projects radially beyond the cross-section of the coil former in the angular region where the coil former extends along an arc. At least one flange preferably has the same cross-sectional contour as the core part surrounded circumferentially by the winding part. For example, at least one flange has a cross-section in the shape of a segment of a circle, particularly a semi-circular cross-section. At least one flange increases the volume of the core.

[0029] The winding portion can particularly preferably be arranged between two flanges arranged at both ends. This leads to a stable arrangement of the winding portion. The flanges on the end sides shield the conductor.

[0030] ​The inductive component according to claim 10 exhibits high stability and good electromagnetic shielding properties. The conductor is shielded by an outer core around the winding portion. The outer core further provides a stable arrangement of the winding portion between the core and the outer core. The core volume for magnetic flux is further increased by the outer core. This improves the magnetic properties, particularly increasing the inductance.

[0031] The inductive component according to claim 11 has a compact design. An arcuate, particularly circular-arc-shaped outer core in the circumferential direction of the core is optimally matched to the winding portion extending along the arc, particularly optimally matched to an arcuate, particularly circular-arc-shaped winding portion. The cross-section of the outer core efficiently covers (covers) the high magnetic flux region.

[0032] The outer core particularly surrounds the winding portion in the form of part of a ring. The ring sub-region covered by the outer core particularly corresponds to the central point angle b. The radial thickness of the outer core is, for example, between 0.3 mm and 2 mm, particularly between 0.5 mm and 1 mm, for example about 0.7 mm.

[0033] The inductive component according to claim 12 exhibits high stability and good shielding properties of the conductor. By arranging the winding portion in the groove, the winding portion is shielded also on the end side. The winding portion is stably and reliably held in the groove.

[0034] The groove preferably has a cross-section corresponding to the cross-section of the conductor in the winding portion, particularly the cross-section of the flat wire or bracket used.

[0035] The inductive component according to claim 13 guarantees an improvement in magnetic and / or mechanical properties. The core, the winding portion, and the outer core can be easily positioned relative to each other by an air gap. Manufacturing inaccuracies can be corrected. The air gap further increases the magnetic saturation of the inductive component.

[0036] In particular, the air gap can form the accommodation space for the winding portion. The winding portion is securely and stably arranged between the core and the outer core.

[0037] The inductive component according to claim 14 ensures an improvement in magnetic and / or mechanical properties. Various core pieces can be easily positioned relative to each other. In particular, the assembly of the inductive component is simplified, for example, by pushing the core pieces into the recesses of the outer core from different sides. This is particularly advantageous in the case of a core with flanges arranged at the ends.

[0038] The different core pieces are preferably separated from each other along the cylindrical axis of the core. The different core pieces can form various core parts along the cylindrical axis. For example, two core pieces can form two halves of the core. The core pieces are particularly symmetrical relative to each other. For example, the core pieces may be identical.

[0039] The inductive component according to claim 15 ensures an improvement in magnetic and / or mechanical properties. Due to the design of the air gap in the core, magnetic saturation increases. The relative arrangement of the core pieces is simplified by the air gap.

[0040] The inductive component can preferably have an air gap between the outer core and the core and / or a core air gap between various core pieces. Due to changes in the air gap and / or the core air gap, magnetic and / or electrical properties, such as magnetic saturation and / or saturation current, may be particularly affected. Exemplary sizes of the air gap and / or the core air gap are, in particular, between 0.03 mm and 0.15 mm, particularly between 0.03 mm and 0.065 mm.

[0041] Further features, advantages, and details of the present invention can be found in the following description of a plurality of exemplary embodiments.

Brief Description of the Drawings

[0042]

Figure 1

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DETAILED DESCRIPTION OF THE INVENTION

[0043] Referring to FIGS. 3 to 6, a first exemplary embodiment of an inductive component for high-current applications in the form of an inductor 1 is shown. The inductor 1 comprises a core 2, a conductor 3, and an outer core 4. The components of the inductor 1 are described with reference to a Cartesian coordinate system having the x, y, and z axes shown in the figures.

[0044] The core 2 and the outer core 4 are made of, for example, soft magnetic ferrite, particularly manganese-zinc ferrite and / or nickel-zinc ferrite. The conductor 3 consists of a conductive metal, particularly copper.

[0045] The conductor 3 has a winding portion 5 arranged circumferentially around the core 2. On the end side of the winding portion 5, the conductor 3 has two electrodes 6 for contacting the winding portion 5. The conductor 3 includes a flat wire (flat rectangular wire) forming the winding portion 5. The electrode 6 is embodied as an extension of the flat wire. The flat wire has a wide surface with a width B running parallel to the x direction. The wide surface of the flat wire faces the core 2. Perpendicular to the wide surface, the flat wire has a narrow surface with a thickness d.

[0046] The core 2 has a core portion in the shape of a coil former 7 surrounded circumferentially by the winding portion 5. The coil former 7 has a general cylindrical shape. The cylindrical axis 8 of the coil former 7 extends along the x-axis. The core 2 has a length L in the direction of the cylindrical axis 8. The bottom surface of the cylinder is in the z-y plane. The bottom surface of the coil former 7 is semi-circular. The bottom surface of the coil former 7 corresponds to a segment of a circle having a central point angle b and a radius R. The central point angle b is 180° in the illustrated exemplary embodiment.

[0047] The flange 9 of the core 2 is adjacent to each end side of the coil former 7 in the direction of the cylindrical axis 8. The flange 9 has the same cross-sectional shape as the coil former 7 in the direction perpendicular to the cylindrical axis 8. The cross-section of the flange 9 in the direction perpendicular to the cylindrical axis 8 is semi-circular. The radius of the cross-section of the flange 9 is substantially larger by the thickness d of the narrow surface of the flat wire forming the winding portion 5. The length of the coil former 7 in the direction of the cylindrical axis 8 substantially corresponds to the width B of the wide surface of the flat wire forming the winding portion 5. The groove-shaped accommodation space 10 for the winding portion 5 of the conductor 3 is formed by the smaller cross-sectional radius of the coil former 7.

[0048] The core 2 has two core pieces 11. The core 2 is divided into two parts. The core pieces 11 face each other in the direction of the cylindrical axis 8. The core pieces 11 are arranged at intervals from each other in the direction of the cylindrical axis 8. A core gap 12 is formed between the core pieces 11. The core gap 12 has a gap dimension t in the direction of the cylindrical axis 8. The core gap 12 is formed at the center of the core 2 with respect to the cylindrical axis 8.

[0049] The core piece 11 exhibits mirror symmetry with respect to a mirror plane defined at the same height as the core gap 12 in the y-z plane. The core piece 11 forms two core halves. Each core piece 11 has a part of the coil former 7 and one of the flanges 9.

[0050] The winding part 5 of the conductor 3 is arranged circumferentially around the coil former 7 of the core 2. The winding part 5 is arranged in the groove-shaped accommodation space 10 between the flanges 9. The winding part 5 extends along an arc K having a central point angle b. The winding part 5 forms half of the winding of the conductor 3. In the illustrated exemplary embodiment, the winding part is arc-shaped. The winding part 5 extends along the arc K in the circumferential direction of the core 2. The winding part 5 is semi-circular arc-shaped.

[0051] The wide surface of the winding part 5 preferably abuts against the side surface of the coil former 7.

[0052] The cross-section of the core 2 defined perpendicular to the cylindrical axis 8 in the region of the coil former 7 is within the segment S of the circle corresponding to the arc K. In this exemplary embodiment, the cross-section of the core 2 in the region of the coil former 7 substantially corresponds to the segment S of the circle. The cross-section of the core 2 in the region of the coil former 7 substantially completely fills the segment S of the circle.

[0053] The outer core 4 circumferentially surrounds the core 2 and the winding part 5 of the conductor 3. The outer core 4 is arc-shaped in the circumferential direction of the core 2. The outer core 4 covers an arc having a central point angle b.

[0054] The outer core 4 is separated from the core 2 and the winding part 5 by a gap 13 extending circumferentially around the core 2. The gap 13 has a gap dimension T.

[0055] The outer core 4 has a general cylindrical shape, and its cylindrical axis extends parallel to the cylindrical axis 8 in the x direction. The outer core 2 covers the entire length L of the core 2 in the direction of the cylindrical axis 8.

[0056] The bottom surface of the outer core 4 is perpendicular to the x-direction within the y-z plane. The bottom surface has a shape of a partial annulus having a central point angle b and a ring width D. The inner radius of the partial annulus substantially corresponds to the sum of the radius R of the arc K, the thickness d of the flat wire, and the gap dimension T of the gap 13.

[0057] The spread of the winding portion 5 along the arc K has the advantage that the volume surrounded per unit length of the winding portion 5 becomes larger. As a result, if the inductance is the same, the length of the winding portion 5 can be shortened. As a result, the winding portion 5 has a lower DC resistance.

[0058] Since the cross-section of the core 2 is within the circular segment S, there is an advantage that the volume of the core becomes smaller compared to a circular-cylindrical core. As a result, the inductance per unit volume of the inductor increases.

[0059] The winding portion 5 is surely shielded by the flange 9 and the outer core 4.

[0060] The advantages of the inductor 1 are independent of the specific dimensions of its components. Compared with the inductor already known in FIGS. 1 and 2, if the maximum dimensions in the x, y, and z directions are the same, the volume of the inductor 1 is about 27% smaller. For the same inductance, the inductance per unit volume increases significantly. The material consumption, weight, and manufacturing cost of the inductor 1 are reduced.

[0061] For example, when the known inductor 100 has a length in the x direction of 6 mm, a spread in the y direction of 6.8 mm, and a spread in the z direction of 3.4 mm, it has a volume of 122 mm 3 The inductor 1 has a volume of about 88 mm 3 for the corresponding maximum dimensions in the x, y, and z directions.

[0062] A further advantage of the inductor 1 is that its dimensions, in particular the radius R of the arc K, the central point 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 gap 12, and / or the gap dimension T of the gap 13 can be changed substantially independently of each other. The inductor 1 can be flexibly adapted to each requirement.

[0063] A further exemplary embodiment of the inductor will be described with reference to FIG. 7. Components that have already been described in connection with the exemplary embodiments of FIGS. 3 to 6 are provided with the same reference numerals. Structurally different but functionally identical components are provided with the letter a after the same reference numeral.

[0064] This inductor differs from the inductors shown in FIGS. 3 to 6 only in the core configuration. FIG. 7 shows the core piece 11a of the core. The core piece 11a has a flange 9a and a tapered portion for forming the coil former 7a. The core piece 11a has a notch 14 formed around the central point M. In a direction perpendicular to the cylindrical axis 8, the notch 14 has a semi-circular cross-section with a radius r around the central point M.

[0065] It has been found that the magnetic flux in the cross-sectional area surrounding the central point M is low. Therefore, the notch 14 can further save the core material without adversely affecting the magnetic flux in the core. Therefore, the core composed of the core pieces 11a can further increase the inductance per unit volume.

[0066] Compared with the exemplary embodiments shown in FIGS. 3 to 6, the tapered (tapered) portion of the core piece 11a forming the coil former 7a has a greater length in the direction of the cylindrical axis 8. Thereby, a flat wire having a wider width B can be attached to the core. Alternatively, it is also possible for the flat wire to have a width B that is narrower than the length of the coil former 7a in the direction of the cylindrical axis. The volume of the core can be adjusted independently of the width of the winding portion.

[0067] Figures 8 to 10 show further exemplary embodiments of the inductive component in the form of the inductor 1b. Components already described in connection with the exemplary embodiments of FIGS. 3 to 7 are labeled with the same reference numerals. Structurally different but functionally identical components are labeled with the same reference numeral followed by the letter b.

[0068] The inductor 1b has a conductor 3b, and its electrodes 6b are wider than the flat wire forming the winding portion 5. This facilitates the connection and contact of the electrodes 6b.

[0069] A groove 15 is formed on the inner side of the outer core 4b facing the core 2b. The groove 15 serves to accommodate the winding portion 5 of the conductor 3b. The winding portion 5 is disposed within the groove 15.

[0070] The core 2b is integrally formed. The core 2b has no core voids between various core pieces. The core 2b is particularly stable and structurally simple.

[0071] The core 2b has a semi-circular cross-section in the y-z plane. Its cross-section is constant along the cylindrical axis 8. The core 2b has a simple design.

[0072] Figures 11 and 12 show further exemplary embodiments of the inductive component in the form of the inductor 1c. Components already described in connection with the exemplary embodiments of FIGS. 3 to 10 are labeled with the same reference numerals. Structurally different but functionally identical components are labeled with the same reference numeral followed by the letter c.

[0073] The inductor 1c differs from the inductor 1b described in FIGS. 8 to 10 only with respect to the configuration of the core 2c. The outer core 4b and the conductor 3b are the same. In particular, the winding portion 5 of the conductor 3b is disposed within the groove 15 of the outer core 4b.

[0074] The core 2c has two core pieces 11c arranged at intervals in the direction of the cylindrical axis 8, and a core void 12c is formed between these core pieces 11c.

[0075] The plurality of core pieces 11c of the core 2c are identical. These core pieces 11c have a constant cross-section along the cylindrical axis 8 in a direction perpendicular to the cylindrical axis 8. The cross-section of the core piece 11c corresponds to the cross-section of the core 2c. The cross-section is in the shape of a partial annulus. A semi-circular notch 14c with a radius r is formed around the center point M. The radius r of the notch 14c forms the inner radius of the cross-section of the partial annulus shape. The outer radius of the cross-section of the core 2c corresponds to the radius R of the arc K along which the winding portion 5 extends. The core 2c abuts against the outer core 4b by its side surface or against the inside of the flat wire forming the winding portion 5. No gap is formed between the outer core 4b and the core 2c.

[0076] Figures 13 and 14 show further exemplary embodiments of the inductive component in the form of the inductor 1d. The components already described with reference to the above exemplary embodiments are provided with the same reference numerals. Structurally different but functionally identical components are provided with the letter d after the same reference numeral.

[0077] The inductor 1d has a one-piece core 2d without a core gap. The cross-section of the core 2d is in the shape of a partial annulus and has a center point angle b. In the region of the center point M, a semi-circular notch 14 with a radius r is formed. The outer radius R of the cross-section of the core 2d corresponds to the radius R of the arc K along which the winding portion 5 of the conductor 3b extends. The winding portion 5 is in contact with the side surface of the core 2d.

[0078] The cross-section of the outer core 4d is in the shape of a partial annulus and is constant along the cylindrical axis.

[0079] A gap 13d is formed between the core 2d and the outer core 4d. The gap 13d has a gap dimension T that substantially corresponds to the thickness d of the flat wire forming the winding portion 5.

[0080] The following describes the invention according to the claims at the time of international filing. (Aspect 1) An inductive component for high-current applications, comprising: a core (2; 2b; 2c; 2d); and a conductor (3; 3b) having a winding portion (5) arranged circumferentially around the core (2; 2b; 2c; 2d), wherein the winding portion (5) extends circumferentially around the core (2; 2b; 2c; 2d) along an arc (K) having a central point angle b, and 45° ≤ b < 360°. (Aspect 2) The inductive component according to Aspect 1, wherein the central point angle b satisfies 90° ≤ b ≤ 270°, particularly 135° ≤ b ≤ 225°, particularly 160° ≤ b ≤ 200°, particularly 170° ≤ b ≤ 190°, particularly 175° ≤ b ≤ 185°. (Aspect 3) The inductive component according to Aspect 1 or 2, wherein the winding portion (5) is arc-shaped, particularly circular-arc-shaped. (Aspect 4) The inductive component according to any one of Aspects 1 to 3, wherein the winding portion (5) is formed from a flat wire or a bracket. (Aspect 5) The inductive component according to Aspect 4, wherein the wide surface of the flat wire or the bracket faces the core (2; 2b; 2c; 2d). (Aspect 6) The inductive component according to any one of Aspects 1 to 5, wherein the cross-section of the core (2; 2b; 2c; 2d) in the core portion circumferentially surrounded by the winding portion (5) is completely contained within a segment (S) of a circle corresponding to the arc (K). (Aspect 7) The inductive component according to any one of Aspects 1 to 6, wherein the cross-section of the core covers at least 55%, particularly at least 65%, particularly at least 75%, particularly at least 85%, particularly at least 90%, particularly at least 95% of the area of a segment (S) of a circle corresponding to the arc (K) in the core portion circumferentially surrounded by the winding portion (5). (Aspect 8) The inductive component according to any one of Aspects 1 to 7, wherein the cross-section of the core has a notch (14; 14c; 14d) in the region of the central point (M) of the arc (K). (Aspect 9) The inductive component according to any one of Aspects 1 to 8, wherein the core (2; 2b; 2c; 2d) has at least one flange (9; 9a) arranged on the end side. (Aspect 10) The inductive component according to any one of aspects 1 to 9, comprising an outer core (4; 4b; 4d) surrounding the winding portion (5) of the conductor (3; 3b) in the circumferential direction. (Aspect 11) The inductive component according to aspect 10, wherein the outer core (4; 4b; 4d) is arc-shaped, particularly circular arc-shaped. (Aspect 12) The inductive component according to aspect 10 or 11, wherein the winding portion (5) is disposed in the groove (15) of the outer core (4b). (Aspect 13) The inductive component according to any one of aspects 10 to 12, wherein a gap (13; 13d) is formed between the core (2; 2b; 2d) and the outer core (4; 4b; 4d). (Aspect 14) The inductive component according to any one of aspects 1 to 13, wherein the core (2; 2c) has a plurality of, particularly two core pieces (11; 11b; 11c). (Aspect 15) The inductive component according to aspect 14, wherein a core gap (12; 12c) is formed between at least two core pieces (11; 11b; 11c).

Description of Symbols

[0081] 1, 1b, 1c, 1d Inductor 2, 2b, 2c, 2d Core 3, 3b Conductor 4, 4b, 4d Outer Core 5 Winding Part 6, 6b Electrode 7, 7a Coil Former 8 Cylindrical Shaft 9, 9a flange 10 accommodation space 11, 11a, 11c core pieces 12, 12c core voids 13, 13d voids 14, 14c, 14d notches 15 groove 100 inductor 102 core plate 103 conductor bracket 104 cover plate D ring width K arc L overall length M center point S segment T gap dimension of void 13 t gap dimension of core void 12 b center point angle

Claims

1. An inductive component for high-current applications, comprising: a core (2; 2b; 2c; 2d); and a conductor (3; 3b) having a winding portion (5) arranged circumferentially around the core (2; 2b; 2c; 2d), wherein the winding portion (5) extends circumferentially around the core (2; 2b; 2c; 2d) along an arc (K) having a central point angle b, and 45° ≤ b < 360°.

2. The inductive component according to claim 1, wherein the central point angle b satisfies 90° ≤ b ≤ 270°, particularly 135° ≤ b ≤ 225°, particularly 160° ≤ b ≤ 200°, particularly 170° ≤ b ≤ 190°, particularly 175° ≤ b ≤ 185°.

3. The inductive component according to claim 1 or 2, wherein the winding portion (5) is arc-shaped, particularly circular-arc-shaped.

4. The inductive component according to any one of claims 1 to 3, wherein the winding portion (5) is formed from a flat wire or a bracket.

5. The inductive component according to claim 4, wherein the wide surface of the flat wire or the bracket faces the core (2; 2b; 2c; 2d).

6. The inductive component according to any one of claims 1 to 5, wherein the cross-section of the core (2; 2b; 2c; 2d) in the core portion circumferentially surrounded by the winding portion (5) fits entirely within a segment (S) of a circle corresponding to the arc (K).

7. The inductive component according to any one of claims 1 to 6, wherein the cross-section of the core covers at least 55%, particularly at least 65%, particularly at least 75%, particularly at least 85%, particularly at least 90%, particularly at least 95% of the area of a segment (S) of a circle corresponding to the arc (K) in the core portion circumferentially surrounded by the winding portion (5).

8. The inductive component according to any one of claims 1 to 7, wherein the cross-section of the core has a notch (14; 14c; 14d) in the region of the central point (M) of the arc (K).

9. The inductive component according to any one of claims 1 to 8, wherein the core (2; 2b; 2c; 2d) has at least one flange (9; 9a) arranged on the end side.

10. The inductive component according to any one of claims 1 to 9, further comprising an outer core (4; 4b; 4d) that circumferentially surrounds the winding portion (5) of the conductor (3; 3b).

11. The inductive component according to claim 10, wherein the outer core (4; 4b; 4d) is arcuate, in particular circular-arc shaped.

12. The inductive component according to claim 10 or 11, wherein the winding part (5) is arranged in the groove (15) of the outer core (4b).

13. The inductive component according to any one of claims 10 to 12, wherein a gap (13; 13d) is formed between the core (2; 2b; 2d) and the outer core (4; 4b; 4d).

14. The inductive component according to any one of claims 1 to 13, wherein the core (2; 2c) has a plurality of, in particular two core pieces (11; 11b; 11c).

15. The inductive component according to claim 14, wherein a core gap (12; 12c) is formed between at least two core pieces (11; 11b; 11c).

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