Inductor assembly

Abstract

An inductive component (1) for high current applications is disclosed. An inductive component (1) has a magnetic core (2) and a conductor (3) having winding portions (5) arranged in the circumferential direction of the magnetic core (2). The winding portion (5) extends in the circumferential direction of the magnetic core (2) along an arc (K) having a central angle b, wherein: 45 DEG < = blt; and 360 degrees can be achieved.

Description

[0001] The content of German patent application DE 10 2022 204 625.0 is incorporated herein by reference. Technical Field

[0002] The invention relates to an inductive component for high-current applications, in particular 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, such inductive components usually have a low inductance, for example in the nanohenry or low millihenry range. Figure 1 and Figure 2 1 shows a previously known inductor for high current applications. The inductor 100 has a substantially cuboid core 102. The three sides of the core 102 are surrounded by a rectangular bent conductor bow 103. A cover 104 is placed on the core 102 and the conductor bow 103 arranged thereon. Summary of the invention

[0004] The object of the present invention is to improve an inductive component for high current applications, in particular to improve the electromagnetic characteristics of the inductive component.

[0005] This object is achieved by an inductor component having the features mentioned in claim 1. The inductor component has a magnetic core and a conductor, the conductor having a winding portion arranged along the circumference of the magnetic core. The winding portion extends along an arc with a center angle b along the circumference of the magnetic core, where: 45°≤b<360°. The center angle b<360° means that the winding portion does not extend completely around the magnetic core. The winding portion does not form a complete winding. This is advantageous for high-current applications. The extension of the winding portion along the arc results in a shortened length of the winding portion per unit volume enclosed, in particular compared to a rectangularly bent conductor. The shortening of the length of the winding portion results in material saving and a reduction in DC resistance. Conduction losses and unnecessary heating are reduced. The inductor component has improved electrical and mechanical properties. The inductor component is also referred to as an inductor or a high-current inductor hereinafter.

[0006] The inductor assembly is designed for high-current applications, in particular in the medium-frequency range. High-current applications are here to be understood as applications with a current of at least 10 A, in particular at least 15 A, in particular at least 20 A. The inductor assembly is particularly designed 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 in particular a frequency of from 100 kHz to 1 MHz, in particular from 250 kHz to 750 kHz, for example of about 500 kHz. Frequencies in these ranges are also referred to as medium frequencies or radio frequencies. The inductor assembly is preferably designed to operate in these frequency ranges.

[0007] The extension of the winding portion along a circular arc should be understood in particular in such a way that the winding portion extends approximately in the shape of a circular arc in the circumferential direction. For example, the winding portion can be bent into an arc, in particular into a circular arc. However, in the sense of the present invention, the extension along a circular arc includes other profiles of the winding portion, which are approximately arc-shaped, in particular circular arc-shaped. For example, the circular arc can also be approximated by a polygonal profile of the winding portion. For example, the coil forming body can extend along the contour of a polygon with n corners, wherein n is at least 5, in particular at least 6, and preferably greater than 6. For example, the winding portion has at least 3 corners per 180° central angle. Compared with a rectangular conductor bow, the length of the winding portion per unit volume enclosed is therefore significantly shortened.

[0008] Preferably, the winding portion extends along the circular arc such that the entire surface of the circular arc segment surrounded by the circular arc is surrounded by the winding portion.

[0009] In particular, the winding section can have a length in the circumferential direction which differs from the arc length of the circular arc by at most 20%, in particular by at most 10%, in particular by at most 5%.

[0010] The advantages of the winding portion extending along a circular arc are independent of the size of the inductor component, in particular independent of the radius of the circular arc. In a particularly suitable inductor component, the circular arc may have a radius 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. For example, the radius may be about 2.05 mm.

[0011] The conductor may consist essentially of the winding part. Additionally, the conductor may have a conductor part adjoining the winding part. For example, the conductor may have an electrode for contacting the winding part. For example, the electrode may be formed by an extension of the winding part. The electrode may also be connected to the winding part at the end side of the winding part.

[0012] The conductors, in particular the winding parts and / or the electrodes, preferably comprise a metal with high electrical conductivity. For example, the conductors may be made of copper.

[0013] In particular, the magnetic core may have a roughly cylindrical shape in the magnetic core portion that is circumferentially surrounded by the winding portion. The magnetic core portion that is circumferentially surrounded by the winding portion is also referred to as a coil former hereinafter. In particular, the cylindrical axis of the magnetic core, in particular the cylindrical axis of the coil former, may stand upright perpendicular to the plane of the arc along which the winding portion extends. For example, the cylindrical axis may extend through a center point corresponding to the arc. The bottom surface of the magnetic core, in particular the bottom surface of the coil former, may, for example, be located in the plane of the arc. The bottom surface of the magnetic core, in particular the bottom surface of the coil former, may, for example, correspond to the contour of the winding portion in the plane of the arc. Preferably, the bottom surface may essentially have the shape of an arc segment surrounded by the arc.

[0014] In particular, the magnetic core is magnetic. Preferably, the magnetic core is made of ferrite, in particular soft magnetic ferrite. Suitable ferrites are in particular manganese-zinc ferrite and / or nickel-zinc ferrite.

[0015] The central angle b as claimed in claim 2 has proven to be particularly suitable. Preferably, the central angle b is approximately 180°. The winding part is particularly formed as a semi-arc-shaped winding. This allows a compact design while enclosing a large volume. The bottom surface of the magnetic core, in particular the bottom surface of the coil forming body, is particularly semicircular.

[0016] The inductive component as claimed in claim 3 ensures improved mechanical, magnetic and / or electrical properties. An arc-shaped, in particular circular arc-shaped embodiment of the winding portion is stable and easy to manufacture and has a particularly advantageous ratio of the enclosed volume to the length of the winding portion. For example, the winding portion can be bent into an approximately circular arc shape around the magnetic core. Preferably, the curvature of the arc-shaped winding portion differs from the curvature of the circular arc by at most 20%, in particular by at most 15%, in particular by at most 10%. Bending of the conductor is avoided. Preferably, the winding portion is embodied as a circular arc, for example a quarter arc, a half arc or a three-quarter arc. Particularly preferably, the winding portion is embodied as a half arc.

[0017] The inductive component according to claim 4 ensures improved mechanical and / or electrical properties. The flat wire or the bow can be shaped in a simple manner, in particular bent into a shape corresponding to an extension along a circular arc. The resulting winding section is stable. In addition, the flat wire or the bow is particularly suitable for high currents.

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

[0019] The inductor component as claimed in claim 5 ensures improved mechanical, magnetic and / or electrical properties. In particular, the broad side of the conductor can be parallel to the cylindrical axis of the magnetic core, in particular the cylindrical axis of the coil forming body. Preferably, the broad side extends along the side surface of the magnetic core. The corresponding arrangement of the conductor enables simple production, in particular simple bending, of the winding part around the magnetic core. The conductor contributes with its entire broad side to the volume enclosed by the current. This enables a particularly large magnetically active volume for a given conductor size, in particular a given conductor length.

[0020] The inductor assembly as claimed in claim 6 has a compact design and a high inductance per unit volume. It has been shown that the magnetic flux flows essentially in a circular arc segment corresponding to the circular arc. Therefore, the area of ​​the magnetic core outside the circular arc segment hardly contributes to the magnetic properties of the inductor assembly. Since the cross section of the magnetic core is completely located within the circular arc segment, the core material can be saved without affecting the magnetic properties of the magnetic core, in particular the magnetic flux in the magnetic core. The inductor has a compact structure and a low weight. In addition, the inductor can be manufactured in an economical manner. The inductance per unit volume is increased.

[0021] The arc segment corresponding to the arc should be understood as the arc surrounding the arc segment. In particular, the arc segment has the same radius, the same center and the same center angle as the arc. For example, when the center angle b is 180°, the arc segment is a semicircle.

[0022] The cross section of the core is particularly defined in the plane of the arc. For example, the cross section of the core can be defined perpendicular to the cylindrical axis of the core. The cross section of the core particularly corresponds to the bottom surface of the core, in particular the bottom surface of the coil forming body.

[0023] The inductor component as claimed in claim 7 ensures particularly good magnetic and / or mechanical properties. The highest possible coverage of the arc segment with the core cross section makes maximum use of the area surrounded by the winding part. The core, in particular the coil forming body, has a large cross-sectional area for the magnetic flux while being compact. Preferably, the core cross section substantially fills the arc segment. The inductor component has a high inductance while being compact. The inductance per unit volume is increased.

[0024] Particularly preferably, the core cross section substantially has a cross section corresponding to a circle segment. The cross section of the core, in particular the bottom surface of the coil forming body, can be substantially semicircular.

[0025] The inductor component according to claim 8 has particularly advantageous magnetic and / or mechanical properties. It has been recognized that the magnetic flux in the region of the center of the circular arc is low. Due to the cutout in the region of the center of the circle, core material can be saved without substantially impairing the magnetic properties of the core. The inductance per unit volume is further increased. Less core material results in a lighter weight of the inductor component and lower manufacturing costs.

[0026] In particular, the cutout can be designed in the form of a circular arc segment. The center angle of the cutout preferably corresponds to the angle b. The radius of the cutout is in particular smaller than the radius of the circular arc along which the winding portion extends. For example, the ratio of the radius of the cutout to the radius of the circular arc along which the winding portion extends is between 0.1 and 0.6, in particular between 0.15 and 0.5, in particular between 0.2 and 0.4, for example about 0.25. The cutout can in particular be semicircular.

[0027] Particularly preferably, the inductor has a resistance of at least 0.65 nH / mm 3 The unit volume inductance is at least 0.70 nH / mm 3 , in particular at least 0.75 nH / mm 3 .

[0028] The inductor component as claimed in claim 9 has particularly advantageous mechanical and / or magnetic properties. Preferably, the two opposite ends of the magnetic core each have a flange. In particular, the at least one flange adjoins the coil forming body in the direction of the cylinder axis. Preferably, the at least one flange has a larger cross-section than the coil forming body. Particularly preferably, the at least one flange exceeds the cross-section of the coil forming body in the radial direction within the angular range in which the coil forming body extends along the arc. Preferably, the at least one flange has the same cross-sectional profile as the magnetic core portion circumferentially surrounded by the winding portion. For example, the at least one flange has a cross-section in the shape of a circular arc segment, in particular a semicircular cross-section. The at least one flange increases the volume of the magnetic core.

[0029] Particularly preferably, the winding section can be arranged between two flanges arranged at the end. This results in a stable arrangement of the winding section. The flanges at the end shield the conductor.

[0030] The inductor component as claimed in claim 10 has high stability and good electromagnetic shielding. The conductor is shielded by the outer core in the circumferential direction of the winding part. In addition, the outer core causes the winding part to be stably arranged between the magnetic core and the outer core. In addition, due to the presence of the outer core, the volume of the core for magnetic flux is increased. This improves the magnetic characteristics, especially increases the inductance.

[0031] The inductor assembly as claimed in claim 11 has a compact structure. The outer core which is arc-shaped, in particular circular arc-shaped, in the circumferential direction of the core can be optionally adapted to a winding portion extending along a circular arc, in particular an arc-shaped, in particular circular arc-shaped winding portion. The cross section of the outer core effectively covers the area of ​​high magnetic flux.

[0032] The outer core particularly surrounds the winding portion in the form of a partial ring. The partial ring area covered by the outer core particularly corresponds to the central angle b. The thickness of the outer core in the radial direction 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 inductor assembly as claimed in claim 12 has high stability and good shielding of the conductor. Since the winding part is arranged in the slot, the winding part is also shielded at the end face. The winding part is held in the slot in a stable and reliable manner.

[0034] Preferably, the slots have a cross section which corresponds to the cross section of the conductor in the winding section, in particular to the cross section of the flat wire or bow used.

[0035] The inductor component as claimed in claim 13 ensures improved magnetic and / or mechanical properties. Due to the presence of the air gap, the magnetic core, the winding part and the outer magnetic core can be easily placed in relation to each other. Manufacturing inaccuracies can be compensated. In addition, the air gap also increases the magnetic saturation of the inductor component.

[0036] In particular, it is possible that the air gap forms a receiving space for a winding section. The winding section is arranged between the magnetic core and the outer magnetic core in a safe and stable manner.

[0037] The inductor assembly as claimed in claim 14 ensures improved magnetic and / or mechanical properties. The individual core parts can be easily positioned relative to one another. In particular, the assembly of the inductor assembly is simplified, for example by the core parts being able to be pushed into the recesses of the outer core from different sides. This is particularly advantageous for cores with flanges arranged at the end sides.

[0038] Preferably, the different core components are separated from each other along the cylindrical axis of the core. These different core components can form individual core parts along the cylindrical axis. For example, two core components can form two halves of the core. In particular, the core components are symmetrical to each other. For example, the core components can be implemented to be identical.

[0039] The inductor assembly as claimed in claim 15 ensures improved magnetic and / or mechanical properties. The formation of the air gap in the magnetic core improves the magnetic saturation. Due to the presence of the air gap, the relative arrangement of the magnetic core parts is simplified.

[0040] Preferably, the inductive component may have an air gap between the outer core and the core and / or a core air gap between the individual core components. In particular, magnetic properties and / or electrical properties, such as magnetic saturation and / or saturation current, may be influenced by changing the air gap and / or the core air gap. Exemplary gap sizes of the air gap and / or the core air gap are in particular between 0.03 mm and 0.15 mm, in particular between 0.03 mm and 0.065 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Further features, advantages and details of the present invention are derived from the following description of a number of embodiments, wherein:

[0042] Figure 1 A perspective view showing a high current inductor in the prior art is shown;

[0043] Figure 2 Shows the Figure 1 Exploded view of a high current inductor;

[0044] Figure 3 shows a perspective view of an inductor assembly according to a first embodiment;

[0045] Figure 4 Shows the Figure 3 Front view of the inductor assembly;

[0046] Figure 5 Shows the Figure 3 A three-dimensional diagram of a magnetic core of an inductor component;

[0047] Figure 6 Shows the Figure 3 A cross-sectional view of the inductor component along section VI-VI;

[0048] Figure 7 A perspective view showing a magnetic core component of a magnetic core of an inductor assembly according to another embodiment;

[0049] Figure 8 shows a perspective view of an inductor assembly according to another embodiment;

[0050] Fig. 9 Shows the Figure 8 Front view of the inductor assembly;

[0051] Fig.10 Shows the Figure 8 A three-dimensional diagram of an outer magnetic core of an inductor component;

[0052] Fig.11 shows a perspective view of an inductor assembly according to another embodiment;

[0053] Fig.12 Shows the Fig.11 Front view of the inductor assembly;

[0054] Fig.13 shows a perspective view of an inductor assembly according to another embodiment; and

[0055] Fig.14 Shows the Fig.13 Front view of the inductor assembly. DETAILED DESCRIPTION

[0056] Reference Figures 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 magnetic core 2, a conductor 3 and an outer magnetic core 4. The components of the inductor 1 are described with reference to an orthogonal coordinate system having an x-axis, a y-axis and a z-axis as shown in the figure.

[0057] The magnetic core 2 and the outer magnetic core 4 are made of, for example, soft magnetic ferrite, in particular manganese-zinc ferrite and / or nickel-zinc ferrite. The conductor 3 is made of an electrically conductive metal, in particular copper.

[0058] The conductor 3 has a winding portion 5 arranged along the circumference of the magnetic core 2. At 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 forming the winding portion 5. The electrodes 6 are implemented as wire extensions of the flat wire. The flat wire has a wide side, whose width B extends parallel to the x direction. The wide side of the flat wire faces the magnetic core 2. Perpendicular to the wide side, the flat wire has a narrow side, whose thickness is d.

[0059] The magnetic core 2 has a magnetic core part surrounded by the winding part 5 in the circumferential direction, and the magnetic core part is in the form of a coil forming body 7. The coil forming body 7 is designed as a roughly cylindrical body. The cylindrical axis 8 of the coil forming body 7 extends along the x-axis. The magnetic core 2 has a length L in the direction of the cylindrical axis 8. The bottom surface of the cylinder is located in the zy plane. The bottom surface of the coil forming body 7 is semicircular. The bottom surface of the coil forming body 7 corresponds to a circular arc segment with a center angle b and a radius R. In the embodiment shown, the center angle b is 180°.

[0060] In the direction of the cylinder axis 8, the flanges 9 of the magnetic core 2 are adjacent to the end faces of the coil forming body 7. The flanges 9 have the same cross-sectional shape as the coil forming body 7 in the direction perpendicular to the cylinder axis 8. The cross section of the flange 9 perpendicular to the cylinder axis 8 is semicircular. The radius of the cross section of the flange 9 is increased, and the increase is basically the thickness d of the narrow side of the flat wire forming the winding part 5. The length of the coil forming body 7 in the direction of the cylinder axis 8 basically corresponds to the width B of the wide side of the flat wire forming the winding part 5. Since the cross-sectional radius of the coil forming body 7 is smaller, a groove-shaped accommodating space 10 for the winding part 5 of the conductor 3 is formed.

[0061] The magnetic core 2 has two magnetic core parts 11. The magnetic core 2 is divided into two parts. The magnetic core parts 11 are opposite to each other in the direction of the cylindrical axis 8. The magnetic core parts 11 are spaced apart from each other in the direction of the cylindrical axis 8. A magnetic core air gap 12 is formed between the magnetic core parts 11. The magnetic core air gap 12 has a gap size t in the direction of the cylindrical axis 8. The magnetic core air gap 12 is formed in the magnetic core 2 in the center relative to the cylindrical axis 8.

[0062] The core parts 11 are mirror-symmetrical with respect to a mirror plane defined in the yz plane flush with the core air gap 12. The core parts 11 form two half cores. Each core part 11 has a part of the coil forming body 7 and one of the flanges 9.

[0063] The winding portion 5 of the conductor 3 is arranged along the circumferential direction of the coil forming body 7 of the magnetic core 2. The winding portion 5 is arranged in the groove-shaped accommodation space 10 between the flanges 9. The winding portion 5 extends along an arc K having a central angle b. The winding portion 5 forms half of the winding of the conductor 3. In the embodiment shown, the winding portion is in the shape of an arc. The winding portion 5 extends along the arc K in the circumferential direction of the magnetic core 2. The winding portion 5 is semi-arc-shaped.

[0064] Preferably, the wide sides of the winding part 5 abut against the side surfaces of the coil forming body 7 .

[0065] The cross section of the magnetic core 2 (which is defined as perpendicular to the cylinder axis 8 in the region of the coil forming body 7) is located in the arc segment S corresponding to the arc K. In the present embodiment, the cross section of the magnetic core 2 in the region of the coil forming body 7 substantially corresponds to the arc segment S. The cross section of the magnetic core 2 in the region of the coil forming body 7 substantially completely fills the arc segment S.

[0066] The outer core 4 surrounds the core 2 and the winding portion 5 of the conductor 3 in the circumferential direction. The outer core 4 is in the shape of an arc in the circumferential direction of the core 2. The outer core 4 covers an arc having a central angle b.

[0067] The outer core 4 is separated from the core 2 and the winding portion 5 by an air gap 13 extending in the circumferential direction of the core 2. The air gap 13 has a gap dimension T.

[0068] The outer core 4 is substantially cylindrical, with its cylinder axis extending in the x-direction parallel to the cylinder axis 8 . The outer core 2 covers the entire length L of the core 2 in the direction of the cylinder axis 8 .

[0069] The bottom surface of the outer core 4 is located in the yz plane perpendicular to the x direction. The bottom surface is in the form of a partial ring with a central angle b and a ring width D. The inner radius of the partial ring is substantially equal to the sum of the radius R of the arc K, the thickness d of the flat wire and the gap size T of the air gap 13.

[0070] The advantage of the winding part 5 extending along the arc K is that a larger volume is enclosed per unit length of the winding part 5. Therefore, the length of the winding part 5 can be shortened at the same inductance. Therefore, the winding part 5 has a smaller DC resistance.

[0071] The advantage of the cross section of the magnetic core 2 being located in the arc segment S is that, compared with a cylindrical magnetic core, the volume of the magnetic core is reduced, so that the inductance per unit volume of the inductor is increased.

[0072] Due to the presence of the flange 9 and the outer core 4, the winding portion 5 is reliably shielded.

[0073] The advantages of the inductor 1 are independent of the specific dimensions of its components. Figure 1 and Figure 2 Compared with the inductor in FIG. 1 , the volume of inductor 1 is reduced by about 27% with the same maximum expansion in the x, y and z directions. With the same inductance, the inductance per unit volume is significantly increased. The material consumption, weight and manufacturing cost of inductor 1 are reduced.

[0074] For example, a previously known inductor 100 has a length of 6 mm in the x-direction, an extension of 6.8 mm in the y-direction, and an extension of 3.4 mm in the z-direction. 3 The inductor 1 has a volume of about 88 mm in the case of the corresponding maximum expansion in the x, y and z directions. 3 volume.

[0075] Another advantage of the inductor 1 is that its dimensions, in particular the radius R of the arc K, the center angle b, the width B of the conductor 3, the thickness d of the conductor 3, the annular 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 substantially independently of one another. The inductor 1 can be flexibly adapted to the respective requirements.

[0076] Reference Figure 7 Another embodiment of an inductor is described. Figures 3 to 6 Components which have been described in the context of the embodiments of the present invention are marked with the same reference numerals. Components which are structurally different but functionally identical are marked with the same reference numerals followed by the letter a.

[0077] The inductor and Figures 3 to 6 The inductors shown in differ only in the configuration of the core. Figure 71 shows a core part 11a of the core. The core part 11a has a flange 9a and a tapered portion for forming the coil forming body 7a. The core part 11a has a cutout 14 formed around the center M. The cutout 14 has a semicircular cross section around the center M perpendicular to the cylinder axis 8 and a radius r.

[0078] It has been shown that the magnetic flux is low in the cross-sectional area around the center M. Therefore, more core material can be saved by the cutout 14 without adversely affecting the magnetic flux in the core. Therefore, the core composed of the core parts 11a makes it possible to further increase the inductance per unit volume.

[0079] and Figures 3 to 6 Compared to the embodiment shown in , the tapered portion of the core part 11a forming the coil former 7a has a longer length in the direction of the cylinder axis 8. This makes it possible to fit a flat wire with a larger width B on the core. Alternatively, it is also possible that the flat wire has a smaller width B than the length of the coil former 7a in the direction of the cylinder axis. The core volume can be adjusted independently of the width of the winding portion.

[0080] exist Figures 8 to 10 Another embodiment of an inductive component is shown in FIG. 1 , which is in the form of an inductor 1 b. Figures 3 to 7 Components which have been described in the context of the embodiments of the present invention are marked with the same reference numerals. Components which are structurally different but functionally identical are marked with the same reference numerals followed by the letter b.

[0081] The inductor 1b has a conductor 3b, the electrodes 6b of which are widened compared to the flat wire forming the winding part 5. This simplifies the connection and contacting of the electrodes 6b.

[0082] A groove 15 is provided on the inner side of the outer core 4b facing the core 2b. The groove 15 is used to accommodate the winding part 5 of the conductor 3b. The winding part 5 is arranged in the groove 15.

[0083] The magnetic core 2b is designed as a single piece and has no core air gap between the individual magnetic core parts. The magnetic core 2b is particularly stable and has a simple structure.

[0084] The core 2b has a semicircular cross section in the yz plane. This cross section is constant along the cylinder axis 8. The core 2b has a simple design.

[0085] exist Fig.11 and Fig.12 Another embodiment of an inductive component is shown in FIG. 1 , which is in the form of an inductor 1c. Figures 3 to 10Components which have been described in the context of the embodiments of the present invention are marked with the same reference numerals. Components which are structurally different but functionally identical are marked with the same reference numerals followed by the letter c.

[0086] Inductor 1c and Figures 8 to 10 The inductor 1b described in 1 differs only in the configuration of the core 2c. The outer core 4b and the conductor 3b are identical. In particular, the winding portion 5 of the conductor 3b is arranged in the slot 15 of the outer core 4b.

[0087] The magnetic core 2c has two magnetic core parts 11c spaced apart in the direction of the cylinder axis 8. A magnetic core air gap 12c is formed between the magnetic core parts 11c.

[0088] The core parts 11c of the core 2c are designed to be identical. The core parts 11c have a cross section that remains constant along the cylindrical axis 8 perpendicular to the cylindrical axis 8. The cross section of the core parts 11c corresponds to the cross section of the core 2c. The cross section is partially annular. A semicircular cutout 14c with a radius r is formed around the center M. The radius r of the cutout 14c forms the inner radius of the cross section of the partial annular 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 part 5 extends. The side of the core 2c abuts against the outer core 4b or the inner side of the flat wire forming the winding part 5. No air gap is formed between the outer core 4b and the core 2c.

[0089] exist Fig.13 and Fig.14 1 shows another embodiment of an inductive component in the form of an inductor 1d. Components that have been described with reference to the previous embodiments are marked with the same reference numerals. Components that are structurally different but functionally identical are marked with the same reference numerals followed by the letter d.

[0090] The inductor 1d has an integral magnetic core 2d which has no core air gap. The magnetic core 2d has a partially circular cross section with a central angle b. A semicircular cutout 14 with a radius r is formed in the region of the center M. The outer radius R of the cross section of the magnetic 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 abuts against the side of the magnetic core 2d.

[0091] The outer core 4d has a cross section of a partial circular ring which remains constant along the cylinder axis.

[0092] An air gap 13d is formed between the magnetic core 2d and the outer magnetic core 4d. The air gap 13d has a gap size T which substantially corresponds to the thickness d of the flat wire forming the winding portion 5.

Claims

1. An inductor component for high current applications, comprising: Magnetic core (2; 2b; 2c; 2d); as well as a conductor (3; 3b) having a winding portion (5) arranged along the circumference of the magnetic core (2; 2b; 2c; 2d), The winding part (5) extends along the circumference of the magnetic core (2; 2b; 2c; 2d) along an arc (K) with a central angle b, wherein: 45°≤b<360°.

2. The inductor assembly 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. The inductor assembly according to claim 1 or 2, characterized in that: The winding part (5) is arc-shaped, in particular circular arc-shaped.

4. The inductive component according to at least one of claims 1 to 3, characterized in that The winding part (5) is formed by a flat wire or a bow.

5. The inductor assembly according to claim 4, characterized in that: The wide side of the flat wire or the bow is directed toward the magnetic core (2; 2b; 2c; 2d).

6. The inductive component according to at least one of claims 1 to 5, characterized in that The cross section of the magnetic core (2; 2b; 2c; 2d) in the magnetic core portion circumferentially surrounded by the winding portion (5) is completely located within the arc segment (S) corresponding to the arc (K).

7. The inductive component according to at least one of claims 1 to 6, characterized in that The cross-section of the magnetic core (2; 2b; 2c; 2d) in the core portion circumferentially surrounded by the winding portion (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 ​​the arc segment (S) corresponding to the arc (K).

8. The inductive component according to at least one of claims 1 to 7, characterized in that The cross section of the magnetic core has a cutout (14; 14c; 14d) in the region of the center (M) of the circular arc (K).

9. The inductive component according to at least one of claims 1 to 8, characterized in that The magnetic core (2; 2b; 2c; 2d) has at least one flange (9; 9a) arranged on an end side.

10. The inductive component according to at least one of claims 1 to 9, characterized in that An outer magnetic core (4; 4b; 4d) circumferentially surrounds the winding portion (5) of the conductor (3; 3b).

11. The inductor assembly according to claim 10, characterized in that: The outer magnetic core (4; 4b; 4d) is arc-shaped, in particular, circular arc-shaped.

12. The inductor assembly according to claim 10 or 11, characterized in that: The winding portion (5) is arranged in a slot (15) of the outer magnetic core (4b).

13. The inductive component according to at least one of claims 10 to 12, characterized in that An air gap (13; 13d) is formed between the magnetic core (2; 2b; 2d) and the outer magnetic core (4; 4b; 4d).

14. The inductive component according to at least one of claims 1 to 13, characterized in that The magnetic core (2; 2c) has a plurality of magnetic core parts (11; 11b; 11c), in particular two.

15. The inductor assembly according to claim 14, characterized in that: A core air gap (12; 12c) is formed between at least two core components (11; 11b; 11c).

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