Induction device, in particular for an electrodynamic brake, and electrodynamic brake

Abstract

The invention relates to an induction device (300), in particular for an electrodynamic brake (100), comprising at least one support element (400) and a plurality of sheet units (416), wherein each sheet unit of the plurality of sheet units (416) has at least one sheet element (410), preferably a plurality of sheet elements (410), and the at least one support element (400) has a plurality of openings (402). One of the sheet units (416) is guided through each of the openings (402) of the at least one support element (400). The invention additionally relates to an electrodynamic brake (100).

Description

[0001] Induction device, in particular for an electrodynamic brake, and electrodynamic brake

[0002] The present invention relates to an induction device, in particular for an electrodynamic brake, and an electrodynamic brake with this induction device.

[0003] Eddy-current brakes are known in the prior art. For example, DE 950 939 B discloses an eddy-current brake in which the pole cores of the inductor are arranged on either side of an armature movable relative to the inductor. The armature consists of one or more bodies that form the eddy current path and are highly electrically conductive, and of parts that extend through the first-mentioned body or bodies and conduct the magnetic flux well. The parts that conduct the magnetic flux project beyond the body or bodies that form the eddy current path on both sides, so that the ends of these parts form projections that improve the cooling of the armature.

[0004] DE 102016108646 B4 discloses an electrodynamic brake with a magnetic device for providing a magnetic field, which has at least two pole elements and interacts with an induction device. The induction device is arranged such that, in a braking mode, it is at least partially exposed to a magnetic field provided by the pole elements of the magnetic device and is designed such that electrical currents are induced therein in a variable magnetic field. The induction device and the pole elements of the magnetic device are movable relative to one another along a predetermined movement path.

[0005] With the latter electrodynamic brakes and their material structure, consisting of steel pins and perforated plates, it is already possible to significantly reduce the skin effect in the eddy current brake and thus achieve improved current distribution. In particular, the positioning plates that center the steel pins can significantly increase the surface area for cooling the brake, thus increasing the power density.

[0006] The object of the present invention is to propose an improved electrodynamic brake that offers optimized performance and is simple and cost-effective to manufacture. Furthermore, the object of the invention is to provide an electrodynamic brake.

[0007] This object is achieved according to the invention by an induction device according to the features of claim 1 and an electrodynamic brake according to the features of claim 14. Advantageous embodiments are specified in the respective associated subclaims.

[0008] According to this, the object is achieved by an induction device, in particular for an electrodynamic brake, wherein the induction device comprises at least one support element and a plurality of sheet metal units. The plurality of sheet metal units each comprise at least one sheet metal element, preferably a plurality of sheet metal elements, wherein the at least one support element has a plurality of openings. One of the sheet metal units is guided through or arranged in one of the openings of the at least one support element.

[0009] The invention is based on the idea of ​​reducing the total number of individual elements by using sheet metal elements, particularly in comparison to pins, for example, and at the same time increasing the power density within the induction device.

[0010] By reducing the number of individual elements, the production time and costs can be reduced and, for example, manufacturing tolerances can be relaxed and designed more generously.

[0011] The compact arrangement of sheet metal units also results in an improved cooling strategy, in particular optimized liquid cooling, with reduced dead water areas and thus optimized heat dissipation.

[0012] In particular, the induction device may be designed with the largest possible number of sheet metal units. In this way, torque ripple during operation of an electrodynamic brake or the like can be reduced using the induction device according to the invention.

[0013] The openings are preferably designed perpendicular to the support element, so that a theoretical central opening axis runs perpendicular to the surface of the support element. Ideally, the openings are all identical or substantially identical. Alternatively, the design of the openings can vary, preferably so that a symmetrical pattern is achieved along the surface of the individual support element. The sheet metal units can therefore be designed to correspond to the respective opening.

[0014] For the purposes of the present invention, a sheet metal, particularly with regard to a sheet metal unit or a sheet metal element, is preferably understood to mean a structure that has two comparatively longer side edges and one comparatively short side edge. In particular, the side edge can be significantly shorter in the thickness direction of the structure than the other two side edges, resulting in a sheet-like structure.

[0015] If the induction device comprises a plurality of support elements arranged one above the other, the openings of the support elements are preferably configured to correspond to one another. Accordingly, it is provided that the sheet metal units each protrude through the corresponding openings of the plurality of support elements or are arranged in them.

[0016] The support element is advantageously made of an electrically conductive material with low magnetic permeability. Ideally, the support elements can be made of aluminum or copper.

[0017] The sheet metal elements of the sheet metal units can advantageously be made of a material with high magnetic permeability, for example, a steel, in particular a grain-oriented or non-grain-oriented electrical steel sheet. The steel can be, for example, a steel of type or with the material number 1.0718. In this respect, a sheet metal unit can be understood as an electrical steel stack within the meaning of the present invention.

[0018] Each of the sheet metal units can preferably comprise a plurality of sheet metal elements. In particular, the plurality of sheet metal elements of a sheet metal unit can be directly adjacent to one another.

[0019] The sheet metal units are each guided through an opening of the at least one support element or are each arranged in this opening. When using multiple support elements, the sheet metal units preferably extend through an opening of the multiple support elements. Each of the sheet metal units is thus accommodated in all of the arranged support elements or protrudes through them.

[0020] In this way, a compact and efficient induction device can be provided, which also allows a simplified manufacturing process and provides improved power density.

[0021] According to a preferred embodiment, the sheet metal units are arranged at least substantially perpendicularly, preferably orthogonally, relative to the support elements and / or the sheet metal units are arranged in the radial direction of the induction device or with an angular offset relative to the radial direction of the induction device.

[0022] In particular, the support elements can be aligned orthogonally to a central axis of the induction device.

[0023] Preferably, the sheet metal units are arranged upright in the induction device such that their shortest side edge extends parallel to the at least one support element. In this sense, the sheet metal elements can be understood as standing upright in the induction device.

[0024] Furthermore, the sheet metal units or sheet metal elements can run in the radial direction or have an angular offset relative to the radial direction of the induction device.

[0025] For the purposes of the present invention, the radial direction of the induction device is to be understood as meaning in particular the radius of the induction device relative to the central axis.

[0026] If a sheet metal element is arranged in the radial direction, it runs in the direction from the outer circumference to the central axis / center, along the shortest path, according to the radius of the induction device.

[0027] If the sheet metal unit or a sheet metal element is to be arranged with an angular offset, this angular offset is to be understood as being relative to the radial direction between the outer circumference and the center axis of the induction device. In this sense, the sheet metal elements or sheet metal units can be arranged at an angle within the induction device.

[0028] According to a further embodiment of the present invention, the sheet metal units each have a plurality of sheet metal elements, in particular at least three sheet metal elements each, wherein the sheet metal elements of the individual sheet metal units are designed such that the sheet metal units have an at least substantially triangular basic shape.

[0029] In particular, several sheet metal elements can be combined to form a sheet metal unit in such a way that a triangular, at least substantially triangular, basic shape of the sheet metal unit results.

[0030] The sheet metal elements of a sheet metal unit can be stepped to achieve a triangular basic geometry. The middle sheet metal elements therefore have the greatest longitudinal extension. The outer sheet metal elements of a sheet metal unit have the shortest longitudinal extension.

[0031] In particular, the triangular basic shape of the sheet metal units allows the taper in the radial direction of the induction device to be mapped or reflected, so that the largest possible or optimal packing density of the sheet metal units can be achieved.

[0032] In a preferred embodiment, the openings of the support elements with the sheet metal units arranged therein are formed in such a way relative to one another that intermediate spaces are formed between the sheet metal units arranged next to one another, wherein the intermediate spaces are preferably provided or formed as flow channels for a cooling fluid or coolant.

[0033] In particular, good cooling and flow can be ensured so that in the case of large / strong induction, the energy converted into heat can be dissipated.

[0034] In particular, it is provided that the cooling fluid can circulate between the sheet metal units within the induction device.

[0035] The cooling fluid can follow a radial flow direction to ensure heat dissipation for cooling the compact sheet metal units or sheet metal elements. Preferably, a cooling liquid or liquid cooling system can be provided as the cooling fluid. Alternatively, air cooling can be used within the meaning of the present invention.

[0036] According to a further preferred embodiment, the wall element at the outer diameter of the induction device can be enclosed by an outer housing, wherein the outer housing has at least one opening for a cooling fluid, and the wall element at the outer diameter of the induction device has at least one passage opening for a cooling fluid. A flow channel can preferably be formed at least partially in the circumferential direction between the outer housing and the wall element at the outer diameter of the induction device.

[0037] In particular, a cooling fluid can be introduced from outside via the opening of the outer housing and the passage opening of the wall element at or in the region of an outer diameter of the induction device into the induction device in order to cool the sheet metal units.

[0038] The cooling fluid can flow through the induction device between the sheet metal units and between the support elements, preferably in a radial direction. In particular, a bidirectional flow in the radial direction can be provided, i.e., an inflow of cooling fluid in the direction of the inner / outer diameter and an outflow in the direction of the outer / inner diameter of the induction device.

[0039] Furthermore, it can preferably be provided that a gap or a flow channel is formed between the outer housing and the wall element at / in the region of the outer diameter(s) of the induction device, at least in sections along the circumferential direction.

[0040] Thus, a coolant or a cooling fluid can be distributed in the circumferential direction (at least in sections) and passed through the passage opening of the wall element to the sheet metal units in order to flow along the sheet metal units in the radial direction and achieve heat dissipation.

[0041] According to a further embodiment, the wall element has at least one deflection section at the inner diameter of the induction device, for deflecting the cooling fluid preferably in a radial direction. In this way, the cooling fluid can flow into the induction device, particularly in a radial direction, toward the inner diameter of the induction device, be deflected by the wall element at the inner diameter, and flow back in a radial direction toward the outer diameter of the induction device.

[0042] In particular, a cooling circuit can be formed within the induction device in this way.

[0043] According to a further embodiment, the induction device has a wall element on an inner diameter and / or on an outer diameter.

[0044] In particular, the at least one support element and the sheet metal units can be enclosed by the wall elements in such a way that a fixed positioning of the components is ensured.

[0045] Furthermore, the radially outer wall element can have openings for the introduction of a cooling fluid.

[0046] According to one embodiment, the at least one wall element of the induction device has retaining web recesses, wherein the sheet metal units, in particular the individual sheet metal elements, have retaining web sections on an outer diameter and / or an inner diameter, wherein the retaining web recesses and the retaining web sections are provided for mutual engagement with one another.

[0047] In this way, the sheet metal units can be accommodated and secured between the wall elements, preferably without additional fastening means or the like. The sheet metal units and the wall elements can be integrally interlocked with one another.

[0048] According to a preferred embodiment, at least a portion of the sheet metal elements of a sheet metal unit are in contact with the support element.

[0049] This means that, in particular, the outer sheet metal elements of a sheet metal unit, or their outer surfaces, are in contact with one of the opening edges of the opening, so that support can be provided. With a preferably rectangular sheet metal element and a straight opening edge, the geometries can therefore touch along a contact line.

[0050] In the case of a triangular basic shape of the sheet metal units, alternatively several sheet metal units can be placed in contact with the support element at specific points.

[0051] Preferably, the openings, or the opening edge(s) of the openings, are designed in the sense of a stepped edge / step shape, so that the opening or opening edge follows the preferably stepped outer contour of the sheet metal unit. In this case, the sheet metal unit can preferably be supported along a continuous contact line with the respective opening or opening edge.

[0052] According to one embodiment, at least a portion of the sheet metal elements comprise an electrically insulating material as an addition or are coated with a coating, in particular comprise a phosphate-containing material as an addition.

[0053] To prevent short circuits and ensure optimal formation of magnetic field lines, a further improvement could be to have at least a portion of the sheet metal elements have an electrically insulating material on their outer surface. This can be a deposit, such as a phosphate coating, or another electrically insulating coating, particularly an insulating varnish for an electrical sheet (package).

[0054] In particular, the sheet metal units as a whole can be provided with such a coating.

[0055] According to a preferred embodiment, a return element is provided which is preferably made of a soft magnetic composite or of a ceramic ferrite, in particular a ferrous return element.

[0056] For the later installation of the induction device with a one-sided magnetic device, an improved embodiment can therefore consist in providing a return element which is preferably made of a soft magnetic composite or of a ceramic ferrite, in particular is designed as a ferrous return element.

[0057] This return element can form a terminal element and, for example, has the shape of a plate or a ring. In particular, the return element can be provided on one end of the induction device or the sheet metal units. Furthermore, the return element can be in contact with one end of the sheet metal units.

[0058] When installed, the return element is preferably arranged on the side of the induction device facing away from the poles or pole pieces. The return element is preferably configured parallel to the support elements.

[0059] In the sense of the present invention, in particular different return and / or excitation variants can be provided, as are known, for example, from DE 10 2016 108 646 B4.

[0060] For example, a disc-shaped return element can be provided or a helically wound steel strip can be used to form a disc-shaped return element.

[0061] Furthermore, the excitation coils or pole elements can be arranged, for example, on one side or, by replacing the return element, on both sides of the induction device. The excitation coils or pole elements can be designed exclusively as north poles, or the pole elements can be provided in the form of permanent magnets instead of core-winding coils. Particularly in the case of a double-sided arrangement of pole elements, only north poles or south poles can be arranged on one side of the respective carrier plate.

[0062] In the sense of the present invention, the pole elements can in particular be provided as a rotor, wherein the induction device can preferably be provided as a stator.

[0063] According to a further embodiment, at least one spacer is arranged between two adjacent support elements of the plurality of support elements, in particular in the form of a silicone cord, a plastic cord, a silicone ring, a plastic ring or the like, or in the form of an intermediate element with a tangential wave contour, so that a minimum distance is provided between two adjacent support elements. For this purpose, one or more flexible spacers can be arranged between two support elements, such as one or more silicone cords. In particular, silicone or plastic rings can also be placed around or on the sheet metal units, on which a subsequent support element can rest or lie. The superimposed support elements advantageously provide an open, flow-through structure.

[0064] Alternatively, an intermediate element or an intermediate plate with a tangential wave contourAform can be inserted between the support elements in order to provide a distance or a minimum distance between the support elements.

[0065] According to a further preferred embodiment, the induction device has at least one cover element, in particular at least one cover plate, which is provided on one end side of the induction device, wherein the cover element has an electrical conductivity which is lower than the electrical conductivity of the at least one support element.

[0066] For example, the lid element may comprise a material such as stainless steel or the like.

[0067] Furthermore, the cover element or the cover sheet can preferably be arranged in contact with the wall elements and / or the sheet metal units.

[0068] Preferably, the at least one cover element is provided on the induction device in such a way that the cover element forms a fluid-tight connection with the wall elements and / or the sheet metal units.

[0069] In particular, the cover element can be provided on a side of the induction device opposite the return element.

[0070] If pole elements or coils are provided on both sides of the induction device, the induction device can be designed with two cover elements, wherein one cover element is arranged on or in the region of one end side of the induction device, in order to form a preferably fluid-tight arrangement.

[0071] In particular, the at least one cover element can have openings that correspond to the openings of the support elements, so that the sheet metal units can or do protrude through the at least one cover element. Preferably, the connection or contact point between the individual sheet metal units and the at least one sheet metal unit can be fluid-tight.

[0072] Preferably, the cover element has the lowest possible electrical conductivity.

[0073] Because the cover element has low electrical conductivity, the sheet metal units can be protected from additional heat input.

[0074] The invention further encompasses an electrodynamic brake having a magnetic device for providing a magnetic field. The magnetic device preferably has at least one pole element and an induction device according to the present invention.

[0075] Preferably, the induction device can be arranged such that, in a force mode, it is at least partially exposed to a magnetic field provided via the pole elements of the magnetic device, and wherein the induction device and the pole elements of the magnetic device are movable relative to one another along a predetermined movement path.

[0076] In this way, an efficient electrodynamic brake is available that can be manufactured using a simplified and cost-effective process.

[0077] Further details and advantages of the invention will now be explained in more detail with reference to embodiments shown in the drawings.

[0078] They show:

[0079] Fig. 1 is a perspective view of an embodiment of an electrodynamic braking device with an induction device;

[0080] Fig. 2 top view of an embodiment of an induction device;

[0081] Fig. 3: Top view of another embodiment of an induction device; Fig. 4: Sectional view of an embodiment of an induction device according to Fig. 2;

[0082] Fig. 5 Detailed view of the induction device according to an embodiment;

[0083] Fig. 6 perspective view of the sheet metal units of the embodiment according to Fig. 2; and

[0084] Fig. 7 Detailed representation of an embodiment of an induction device.

[0085] Fig. 1 shows an embodiment of an electrodynamic brake 100 with an induction device 300.

[0086] The electrodynamic brake 100 is arranged on a shaft 106.

[0087] The shaft 106 or a longitudinal axis of the shaft 106 can be regarded as the axis of rotation of the electrodynamic brake 100.

[0088] According to Fig. 1, a plurality of pole elements 102 are arranged on both sides of the induction device 300.

[0089] The pole elements 102 on each side of the induction device 300 can preferably have alternating polarities.

[0090] Furthermore, the pole elements 102 are each provided with an end plate 104.

[0091] The induction device 300 is formed according to Fig. 1 with a plurality of sheet metal units 416, each having a plurality of sheet metal elements 410.

[0092] The plurality of sheet metal units 416 are arranged radially (uniformly) distributed around the axis of rotation or axis of symmetry of the electrodynamic brake 100 or the induction device 300.

[0093] In particular, the sheet metal elements 410 of each sheet metal unit 416 are arranged directly next to one another.

[0094] Furthermore, the induction device 300 has a cover element 438. The cover element 438 is shown with openings through which the sheet metal units 416 protrude.

[0095] The induction device 300 has a wall element 418 on an outer diameter or in the region of an outer diameter.

[0096] The wall element 418 is enclosed by an outer housing 420. According to Fig. 1, the outer housing may have an opening 422 for a cooling fluid.

[0097] Fig. 2 shows a plan view of an embodiment of an induction device 300.

[0098] The plurality of sheet units 416 are shown evenly distributed radially along the induction device 300.

[0099] The sheet metal units 416 are aligned in the radial direction so that a longitudinal axis of the respective sheet metal units 416 runs from a circumference to a center point of the induction device 300.

[0100] The sheet metal units 416, each with a plurality of sheet metal elements 410, have an at least substantially triangular basic shape.

[0101] In particular, the sheet metal units 416 are shown with a step-wise design of the individual sheet metal elements 410, so that the sheet metal units have a substantially triangular basic geometry.

[0102] The sheet metal elements 410 protrude through openings in the cover element 438.

[0103] Between the sheet metal units 416 of the sheet metal elements 410 or the openings, the cover element 438 can be formed with webs 406 or have webs 406.

[0104] Sheet metal units 416 arranged next to one another are arranged at a distance from one another in such a way that intermediate spaces 412 are formed.

[0105] The wall element 418 is provided on an outer diameter of the induction device 300, enclosed by the outer housing 420. In particular, the wall element 418 can partially encompass the cover element 438 or engage in the cover element 438.

[0106] The induction device 300 has a further wall element 418 on an inner diameter.

[0107] Fig. 3 shows a plan view of another embodiment of an induction device 300.

[0108] The embodiment according to Fig. 3 differs from the embodiment according to Fig. 2 in particular in the orientation or arrangement of the sheet metal units 416.

[0109] According to Fig. 3, the sheet metal units 416 are arranged twisted or obliquely with respect to a radial direction.

[0110] The sheet metal units 416, each with a plurality of sheet metal elements 410, or the longitudinal axis of the respective sheet metal unit 416 has an angular offset relative to the radial direction of the induction device 300.

[0111] Fig. 4 shows a sectional view of an embodiment of an induction device 300 according to Fig. 2.

[0112] According to Fig. 4, the induction device 300 has a plurality of support elements 400 arranged one above the other.

[0113] The support elements 400 are formed with openings 402, wherein the sheet metal units 416 each protrude through corresponding openings 402 of the plurality of support elements 400.

[0114] In particular, the sheet metal units 416 can rest against the opening edges of the openings 402 of the support elements 400.

[0115] Preferably, the support elements 400 are arranged spaced apart from one another, forming gaps 412. Spacing between the support elements 400 can be ensured, for example, by spacers such as a plastic ring, e.g., a silicone ring, a plastic cord, or by means of an intermediate plate with a tangential wave contour.

[0116] The individual sheet metal elements 410 of the sheet metal units 416 have, according to Fig. 4, retaining web sections 430, preferably on an inner diameter and an outer diameter.

[0117] The inside and outside wall elements 418 (at an inside diameter or

[0118] Outer diameter of the induction device 300) are formed with corresponding retaining web recesses 432, so that the retaining web sections 430 can engage in the retaining web recesses 432, in particular so that the sheet metal units can be interlaced or interlaced in the wall elements.

[0119] Furthermore, according to Fig. 4, due to the holding web sections 430, an intermediate space 412 is formed between several support elements 400, which can be used as a flow channel 436 for a cooling fluid.

[0120] The wall element 418 may have a passage opening 426 for the cooling fluid, which is preferably provided corresponding to or overlapping with the opening 422 of the surrounding outer housing 420.

[0121] A cooling fluid can enter the intermediate spaces 412 or the flow channels 436 via the opening 422 of the outer housing and the passage opening 426 of the outer wall element 418 and flow through the induction device 300 in the radial direction.

[0122] Furthermore, a cover element 438 is provided on both sides of the induction device 300.

[0123] Preferably, the cover element 438 is arranged fluid-tight on the wall elements 418 and the sheet metal units 416.

[0124] Fig. 5 shows a detailed view of the induction device 300 according to one exemplary embodiment. According to Fig. 5, the through-opening 426 of the outer wall element 418 can be provided at least partially vertically offset, in particular above and / or below the retaining web recess 432, relative to the opening 422 of the outer housing 420.

[0125] A gap or a flow channel 436 can be formed between the outer housing 420 and the outer wall element 418, along which a cooling fluid can flow in the circumferential direction, at least in sections.

[0126] Furthermore, it can be seen from Fig. 5 that the sheet metal units 416 are enclosed, in particular precisely fitting, in the openings 402 of the support elements 400 and the openings of the cover elements 438 and protrude through them.

[0127] The cover elements 438 are provided to seal the induction device 300 in a fluid-tight manner at an upper side and a lower side.

[0128] Fig. 6 shows a perspective view of the sheet metal units of the embodiment according to Fig. 2.

[0129] In particular, the retaining web sections 430 of the sheet metal units 416 or the individual sheet metal elements 410 are visible.

[0130] The retaining web sections 430 are provided on an outer side and on an inner side of the sheet metal units 416, for interlocking or engaging in corresponding retaining web recesses 432 of the wall elements 418.

[0131] Furthermore, the sheet metal units 416 have an at least substantially triangular basic shape, which is achieved in particular by a stepped design of the individual sheet metal elements 410.

[0132] The sheet metal units 416 are aligned with their respective longitudinal axes in the radial direction so that the longitudinal axes intersect at a center point or a rotation axis (of the electrodynamic brake 100 or the induction device 300).

[0133] Furthermore, the adjacent sheet metal units 416 are spaced apart from one another, so that gaps 412 are formed. Fig. 7 shows a detailed illustration of an embodiment of an induction device 300.

[0134] In particular, the flow direction of a cooling fluid is illustrated by an arrow in Fig. 7.

[0135] According to Fig. 7, the inner wall element 418 can have deflection sections 424 for deflecting the cooling fluid flow, preferably by 180° in the radial direction.

[0136] In particular, the various gaps 412 between the sheet units 416 and between the support elements 400 can be used to allow a bidirectional flow of the cooling fluid in the radial direction, so that a cooling circuit can be provided within the induction device 300.

[0137] Preferably, according to Fig. 7, the cooling fluid can flow radially inward between the support elements 400, be deflected by the wall element 418 at the inner diameter of the induction device 300 or the deflection sections 424, and flow back radially outward centrally between the support elements, in particular in an intermediate space 412 formed by the holding web sections 430.

[0138] Furthermore, Fig. 7 shows that a gap or flow channel 436 can be provided between the outer housing 420 and the outer wall element 418.

[0139] The cooling fluid can flow between the outer housing 420 and the outer wall element 418 at least partially in the circumferential direction.

[0140] In particular, the cooling fluid entering through the opening 422 of the outer housing 420 can be distributed in the circumferential direction and flow further through several passage openings 426 of the outer wall element 418.

[0141] The intermediate spaces 412 or flow channels 436 are preferably designed such that the cooling fluid can flow through the induction device 400 with the sheet metal units 416 and the support elements 400 primarily in the radial direction.

[0142] Overall, in the context of the present invention, it is understood that the references relative to gravity, such as "up," "down," "lower," "set," "upright," "hanging," etc., serve only to illustrate and describe the elements shown in a specific position. These references are not to be understood as limiting the orientation of the induction device during use or assembly and apply analogously to a different orientation, such as a vertical orientation of the induction device.

[0143] In summary, the present invention, by means of the sheet metal units 416, represents an efficient induction device 300 which, in particular, can have or provide a high power density.

[0144] Furthermore, the induction device 300 according to the invention provides an optimized cooling strategy for heat transport or heat removal by means of a targeted, at least substantially radially extending coolant flow or cooling fluid flow.

[0145] In addition, the induction device 300 enables simplified manufacturing, particularly with regard to the number of individual components and their handling, the manufacturing tolerances and the resulting shortened assembly times.

[0146] List of reference symbols Brake Pole element End plate Shaft Induction device Support element Opening Web Sheet metal element Intermediate space Sheet metal unit Wall element Outer casing Opening (outer casing) Deflection section (wall element) Passage opening (wall element) Holding web sections Holding web recesses Flow channel Cover element

Claims

Patent claims Induction device (300), in particular for an electrodynamic brake (100), with at least one support element (400) and a plurality of sheet metal units (416), wherein the plurality of sheet metal units (416) each have at least one sheet metal element (410), preferably a plurality of sheet metal elements (410), wherein the at least one support element (400) has a plurality of openings (402), and wherein one of the sheet metal units (416) is passed through each of the openings (402) of the at least one support element (400). Induction device (300) according to claim 1, characterized in that the sheet metal units (416) are arranged at least substantially perpendicularly, preferably orthogonally, relative to the support elements (400) and / or the sheet metal units (416) are arranged in the radial direction of the induction device (300) or with an angular offset relative to the radial direction of the induction device (300).Induction device (300) according to claim 1 or 2, characterized in that the sheet metal units (416) each have a plurality of sheet metal elements (410), in particular at least three sheet metal elements (410) each, wherein the sheet metal elements (410) of the individual sheet metal units (416) are designed such that the sheet metal units (416) have an at least substantially triangular basic shape. Induction device (300) according to one of the preceding claims, characterized in that the openings (402) of the support elements (400) with the sheet metal units (416) arranged therein are formed in such a way relative to one another that intermediate spaces (412) are formed between the adjacently arranged sheet metal units (416), wherein the intermediate spaces (412) are preferably provided as flow channels (436) for a cooling fluid. Induction device (300) according to one of the preceding claims, characterized in that. the induction device (300) has a wall element (418) on an inner diameter and / or on an outer diameter. Induction device (300) according to claim 5, characterized in that the wall element (418) is enclosed by an outer housing (420) on the outer diameter of the induction device (300), wherein the outer housing (420) has at least one opening (422) for a cooling fluid and the wall element (418) has at least one passage opening (426) for a cooling fluid on the outer diameter of the induction device (300), and wherein a flow channel (436) is preferably formed at least in sections in the circumferential direction between the outer housing (420) and the wall element (418) on the outer diameter of the induction device (300).Induction device (300) according to claim 5 or 6, characterized in that the wall element (418) has at least one deflection section (424) on the inner diameter of the induction device (300) for deflecting the cooling fluid in a preferably radial direction. Induction device (300) according to one of claims 5 to 7, characterized in that the at least one wall element (418) of the induction device (300). Holding web recesses (432), and wherein the sheet metal units (416), in particular the individual sheet metal elements (410), have holding web sections (430) on an outer diameter and / or an inner diameter, wherein the holding web recesses (432) and the holding web sections (430) are provided for mutual engagement with one another. Induction device (300) according to one of the preceding claims, characterized in that at least a portion of the sheet metal elements (410) of a sheet metal unit (416) bear against the support element (400) in a contacting manner. Induction device (300) according to one of the preceding claims, characterized in that At least a portion of the sheet metal elements (410) comprise an electrically insulating material as a deposit or are coated with a coating, in particular comprise a phosphate-containing material as a deposit. Induction device (300) according to one of the preceding claims, characterized in that a return element is provided, which is preferably made of a soft magnetic composite or a ceramic ferrite, in particular an iron-containing return element.Induction device (300) according to one of the preceding claims, characterized in that at least one spacer is arranged between two adjacently arranged support elements (400) of the plurality of support elements (400), in particular in the form of a silicone cord, a plastic cord, a silicone ring, a plastic ring, or the like, or in the form of an intermediate element with a tangential wave contour, so that a minimum distance is provided between two adjacently arranged support elements (400). Induction device (300) according to one of the preceding claims, characterized in that the induction device (300) has at least one cover element, in particular at least one cover plate, which is provided on one end side of the induction device (300), wherein the cover element (438) has an electrical conductivity that is lower than the electrical conductivity of the at least one support element (400).Electrodynamic brake (100) with a magnetic device for providing a magnetic field, which has at least one pole element (102) and an induction device (300) according to one of the preceding claims.

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