Cooling assembly and transformer

Abstract

The invention relates to a cooling assembly (1), in particular for a magnetic component (100), comprising: at least one magnetic core (20) comprising a body portion (21) and a plurality of strut portions (22) extending from the body portion (21) in a strut extension direction (2); at least one winding (3) wound around at least one leg portion (22) as a winding leg portion (23) of the magnetic core (20); the base (30) is used for accommodating the at least one magnetic core (20) and the at least one winding (3), and the base (30) comprises at least one heat dissipation part (31) adjacent to at least one of the at least one winding (3); the at least one heat dissipation portion (31) comprises a shape at least corresponding to the shape of an adjacent portion (4) of the at least one adjacent winding (3) at least in a cross section perpendicular to the extension direction (2) of the pillar. The invention also relates to a magnetic component (100) comprising the cooling assembly (1).

Description

Technical Field

[0001] The present invention relates to a cooling assembly, in particular a cooling assembly for a magnetic component such as a transformer, a choke or an inductor. The present invention also relates to a magnetic component comprising the cooling assembly. Background Art

[0002] Common magnetic components (e.g., as known in US2019 / 0019610A1 "Magnetic Components") include a magnetic core or a magnetic core element formed of ferrite, and a winding wound on a magnetic core element column (also referred to as a pillar portion). The components of the magnetic core (e.g., the magnetic core column) are shaped to adapt to the winding. For example, as known in US2019 / 0019610A1 Figure 6 As shown, the posts of the magnetic elements are shaped into arcs to accommodate the windings.

[0003] Furthermore, CN103730230A also shows a magnetic core whose column (pillar portion) is shaped to be adapted to a winding.

[0004] Usually, as a cooling assembly, such magnetic components are housed and packaged in a base. Such a base is usually rectangular and contacts the outer surface of the magnetic core for cooling the magnetic core.

[0005] However, conventionally known bases have a disadvantage that the inner portion of the magnetic core (e.g., the leg portion of the magnetic core), in particular the windings, are far from the inner surface of the base, so that the magnetic core and / or the windings cannot be adequately cooled. In other words, their thermal resistance is high. In addition, the overall volume of the base is large, which increases the size of the cooling assembly, the material cost of the base, and the cost of the large amount of packaging material required to fill the volume of the base. Summary of the invention

[0006] One of the objects of the present invention is to provide a cooling assembly that overcomes these drawbacks. In particular, some objects of the present invention are to provide a cooling assembly that has high thermal efficiency, small size and low material cost. Another object is to provide a transformer having these advantages, in particular to provide a transformer with high efficiency.

[0007] The magnetic component is, for example, a transformer, a choke, an inductor, etc. The cooling assembly includes at least one magnetic core, wherein the magnetic core includes a main body portion and a plurality of pillar portions extending from the main body portion along a pillar extension direction. In addition, the cooling assembly also includes at least one winding wound on at least one of the pillar portions. Therefore, the pillar portion is also referred to as the "winding pillar portion" of the magnetic core or the cooling assembly. The cooling assembly also includes a base. Wherein, the base is used to accommodate at least one magnetic core and at least one winding. The base includes at least one heat dissipation portion adjacent to at least one of the at least one winding. The at least one heat dissipation portion includes a shape corresponding to the shape of an adjacent portion of at least one adjacent winding, at least in a cross section perpendicular to the pillar extension direction.

[0008] Therefore, the cooling assembly of the present invention includes a base, which is arranged to shorten the distance from at least one pillar portion of the winding and / or the magnetic core through at least one heat dissipation portion adjacent to and corresponding in shape to an adjacent portion of the winding, thereby reducing thermal resistance, that is, improving the cooling effect, and reducing the total volume of the cooling assembly.

[0009] For simplicity and ease of understanding, unless otherwise stated or implied, when reference is made in the singular such as “winding”, “pillar portion”, “heat dissipation portion”, etc., it preferably refers to the configuration of one or more of the respective elements.

[0010] In the context, a shape corresponding to the shape of at least one adjacent portion of an adjacent winding is mentioned. This will now be explained in more detail. For example, the cooling assembly comprises a plurality of windings, and the magnetic core preferably comprises a plurality of pillar portions, each pillar portion being respectively wound by one or more windings. The cooling assembly comprises, for example, a plurality of heat dissipation portions, wherein each heat dissipation portion is adjacent to one or more windings. Therefore, each of these adjacent windings comprises a winding portion adjacent to the heat dissipation portion, i.e., a portion of the winding. The heat dissipation portion comprises a shape corresponding to at least the shape of the adjacent winding portion. In addition, the shape of the heat dissipation portion may also correspond to the shape of other elements of the cooling assembly, for example, it may also correspond to the shape of an adjacent pillar portion, in particular an adjacent portion of the adjacent pillar portion. A heat dissipation portion may comprise a shape corresponding to the shape of a plurality of adjacent winding portions, in particular preferably fitted between a plurality of adjacent winding portions. Typically, not all winding portions may be adjacent to a heat dissipation portion.

[0011] Preferably, in this context, the term "adjacent" means "closest to". For example, if the cooling assembly includes a plurality of windings, the "adjacent winding portion adjacent to the heat dissipation portion" refers to a portion of a winding that is closest to the heat dissipation portion among the plurality of windings, wherein the winding is the winding closest to the heat dissipation portion, and the adjacent winding portion is the portion of the winding that is closest to the heat dissipation portion. There may be more than one (especially two) windings adjacent to a heat dissipation portion, wherein each of them is approximately equidistant from the formed portion. In particular, preferably, no other winding or portion of the magnetic core is arranged between the formed portion and its adjacent winding. In addition, preferably, "closest to" is with respect to a direction perpendicular to the direction in which the pillar extends.

[0012] In this context, the term "a shape corresponds to another shape" means in particular that one shape is configured to at least partially adapt to another shape. In particular, the term may mean that the shapes match each other, as will be apparent from the embodiments of the present invention. For example, when one shape is a quarter-circular convex surface, the shape that matches it is a quarter-circular concave surface, and vice versa. Preferably, the term "a shape corresponds to another shape" means that the curvatures of the shapes are equal to each other, in particular have opposite radii.

[0013] In particular, in some embodiments, the at least one heat dissipation portion is arranged in close proximity to the adjacent winding. In this context, the term "close", in particular "close to", preferably means that the gap between the two elements is as small as possible, but they do not touch each other. Alternatively, "close to" preferably means that the adjacent windings at least partially touch their respective heat dissipation portions. For example, in the preferred case where the windings are formed by winding (insulated) wires, the outer surface of the total winding may not be completely flat, with some of the wires being radially further outward than other wires. In this case, at least a portion of the wire may touch the heat dissipation portion.

[0014] Preferably, a gap between the at least one heat dissipation portion and the adjacent winding is filled with a filling material, such as potting glue or thermal grease or thermal glue.

[0015] The base and the magnetic core of the cooling assembly are preferably separate components. In particular, the base is used to substantially not conduct or close the magnetic circuit generated by the winding of the cooling assembly. In other words, the base is used to cool the magnetic core, but is not configured as part of the magnetic circuit. In particular, the materials of the magnetic core and the base are different from each other. For example, the magnetic core is made of a material with a high magnetic permeability (μ r 1), and the base is made of a material having a low magnetic permeability (μ rThe material of the embodiment of the present invention is close to 1, especially less than 2). For example, the magnetic core is composed of or includes ferrite, and the base is composed of or includes copper, aluminum or ceramic material.

[0016] Preferably, the at least one heat dissipation portion comprises at least one concave surface corresponding to the shape of an adjacent portion of at least one adjacent winding, respectively. In particular, the concave shape corresponds to or matches the convex shape of the adjacent winding portion. Preferably, the concave shape of the heat dissipation portion is used to at least partially adapt to the adjacent winding portion. The concave shape is preferably circular.

[0017] In some embodiments, each concave surface is semicircular or quarter-circular, wherein each concave surface is used to at least partially conform to an adjacent winding portion of a semicircle or quarter-circle.

[0018] Preferably, the magnetic core comprises three pillar portions. Among the three pillar portions, at least the middle pillar portion is a winding pillar portion. The winding pillar portion is rounded or comprises rounded edges. In some embodiments, the winding pillar portion is circular, oval, stadium-shaped or rectangular with rounded edges. Preferably, the shape of the winding corresponds to the shape of the winding pillar portion.

[0019] Preferably, all leg portions may be winding leg portions. Alternatively, some leg portions may be winding leg portions and at least one other leg portion may be a return leg portion, on which no winding is wound.

[0020] In some embodiments, the base comprises two heat dissipation parts adjacent to the winding of the intermediate pillar part. Each of the two heat dissipation parts comprises a quarter-circular surface, thereby (especially when combined together) substantially corresponding to the shape of the adjacent part of the winding and / or the intermediate pillar part. Preferably, the two heat dissipation parts are not connected together, and / or, preferably, do not contact each other, so that their quarter-circular surfaces each correspond to the quarter-circular adjacent part of the respective adjacent winding. In some special embodiments, the two heat dissipation parts can be connected together so that they jointly comprise a semicircular surface corresponding to the semicircular adjacent part of the winding adjacent to them.

[0021] In some embodiments, the base includes a heat sink portion adjacent to the winding of the middle pillar portion, wherein the heat sink portion includes a semicircular surface to substantially correspond to the shape of an adjacent portion of the winding and / or the middle pillar portion.

[0022] Preferably, the at least one magnetic core (particularly separately) comprises a plurality of winding leg portions. Wherein, at least one heat dissipation portion is respectively arranged between two adjacent winding leg portions, perpendicular to the extension direction of the leg. In other words, along a direction perpendicular to the extension direction of the leg, two winding leg portions and their respective windings sandwich at least one heat dissipation portion.

[0023] Preferably, one of the directions perpendicular to the direction in which the pillars extend is defined as a height direction. Preferably, another of the directions perpendicular to the direction in which the pillars extend is defined as a width direction. Preferably, the pillar extension direction, the height direction and the width direction jointly define a Cartesian coordinate system, i.e., are perpendicular to each other. The width direction and the height direction are located in a plane defining a cross section of the pillar portion of the magnetic core.

[0024] Preferably, the at least one magnetic core comprises (in particular respectively) three winding leg parts with respective windings, wherein at least two heat sink parts are provided, respectively arranged between two of the three winding leg parts.

[0025] In some embodiments, the at least one heat dissipation portion arranged between two adjacent winding leg portions includes two concave surfaces, each concave surface including a quarter-circular surface corresponding to the respective adjacent winding leg portions and / or the respective adjacent windings of the respective adjacent winding leg portions.

[0026] Preferably, the base further comprises a main body portion having a substantially rectangular shape. In some preferred embodiments, the substantially rectangular shape of the main body portion is adapted to conform to the outer surface of the at least one magnetic core, in particular the main body portion thereof.

[0027] In some embodiments, the main body portion and the at least one heat dissipation portion are separate components. In particular, the main body portion and the at least one heat dissipation portion are not integral with each other. Preferably, the at least one heat dissipation portion is fixed or connected to the main body portion. For example, the at least one heat dissipation portion can be bonded, welded and / or fastened to the main body portion. In addition, the at least one heat dissipation portion can be fixed in place by a potting material or a thermally conductive adhesive of the cooling assembly. In some embodiments, the separate heat dissipation portion is a separate heat sink disposed in the base.

[0028] In some embodiments, the main body portion and the at least one heat dissipation portion are integrally formed with each other. In particular, the main body portion and the at least one heat dissipation portion are integrally formed with each other. For example, the main body portion and the at least one heat dissipation portion may be an integral, one-piece part of the base. Preferably, in this case, a plurality of integral heat dissipation portions may be defined as a single heat dissipation portion, in particular comprising one or more shaped surfaces, for example one or more quarter-circular or semi-circular surfaces.

[0029] Advantageously, the base, in particular the at least one heat sink, comprises or consists of a paramagnetic material. For example, the base is made of aluminum or a ceramic material. Preferably, the body portion and the heat sink are made of the same material, in particular in the case where they are formed as separate elements, preferably also made of aluminum or a ceramic material.

[0030] Preferably, the base of the cooling assembly includes a plurality of heat dissipation portions, each heat dissipation portion having one or more of the aforementioned and following configuration examples. In particular, the aforementioned and following configuration examples are combinable, so that one or more heat dissipation portions have a different configuration from one or more other heat dissipation portions. For example, it is also apparent from the embodiments that some heat dissipation portions may be integrally formed with the main body of the base, in particular integrally formed, while other heat dissipation portions may be formed separately therefrom, i.e. not integrally / integrally formed therewith.

[0031] Preferably, the at least one magnetic core comprises at least one return pillar portion as one of the pillar portions. Wherein, at least one of the return pillar portions comprises a shape corresponding to the shape of the winding pillar portion and / or the shape of the winding adjacent to the return pillar portion. Preferably, at least one of the return pillar portions comprises a concave surface at least in a cross section perpendicular to the extension direction of the pillar, and the concave surface preferably corresponds to the shape of the winding pillar portion and / or the shape of the winding adjacent to the return pillar portion.

[0032] Preferably, the shape of the return pillar portion including the concave surface is arranged opposite to at least one heat dissipation portion of the base and is perpendicular to the extension direction of the pillar. In other words, the return pillar portion preferably includes a portion having a shape similar to that of at least one heat dissipation portion of the base and is arranged opposite thereto. In some embodiments, the return pillar portion including the concave surface is arranged between two winding pillar portions and their respective adjacent winding portions and includes two concave surfaces. In some embodiments, the return pillar portion including the concave surface is arranged between two winding pillar portions and their respective adjacent winding portions and includes four concave surfaces. In particular, one of the return pillar portions is arranged together with one of the heat dissipation portions of the base between two adjacent winding pillars or between adjacent winding pillars and the main body of the base. The heat dissipation portion is preferably opposite to the return pillar portion along a height direction perpendicular to the extension direction of the pillar, and vice versa. In other words, preferably, both the return pillar portion and the heat dissipation portion are clamped by two adjacent winding pillars and their windings, or by the main body of the base and the adjacent winding pillars and their windings.

[0033] In some embodiments, the base includes a plurality of cooling channels formed in at least one heat dissipation portion of the base.

[0034] In some embodiments, the main body and / or at least one heat dissipation portion of the base comprises one or more cooling channels. Preferably, the cooling channels extend longitudinally along the extension direction of the pillars.

[0035] Preferably, the cooling assembly further comprises a potting material or a thermally conductive adhesive. Preferably, the potting material or the thermally conductive adhesive fills the base, in particular a cavity of the base, wherein the cavity comprises gaps between other components of the cooling assembly.

[0036] The present invention also relates to a magnetic component, the magnetic component comprising at least one cooling assembly according to any of the above configurations. Preferably, the example of the magnetic component is a transformer or a choke or an inductor. Preferably, at least one winding is part of a primary winding, a secondary winding or a choke winding of the magnetic component, or constitutes a primary winding, a secondary winding or a choke winding of the magnetic component. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] More details, advantages and features of the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0038] Figure 1 A schematic cross-sectional view showing a cooling assembly according to a first embodiment of the present invention;

[0039] Figure 2a , Figure 2b A schematic cross-sectional view showing a cooling assembly according to a second embodiment of the present invention;

[0040] Figure 3 A schematic cross-sectional view showing a cooling assembly according to a third embodiment of the present invention;

[0041] Figure 4 A schematic cross-sectional view showing a cooling assembly according to a fourth embodiment of the present invention;

[0042] Figure 5 A schematic cross-sectional view showing a cooling assembly according to a fifth embodiment of the present invention;

[0043] Figure 6 A schematic cross-sectional view showing a cooling assembly according to a sixth embodiment of the present invention;

[0044] Figure 7 A schematic cross-sectional view showing a cooling assembly according to a seventh embodiment of the present invention;

[0045] Figure 8 A schematic cross-sectional view showing a cooling assembly according to an eighth embodiment of the present invention;

[0046] Fig. 9 A schematic cross-sectional view showing a cooling assembly according to a ninth embodiment of the present invention;

[0047] Fig.10 A schematic cross-sectional view showing a cooling assembly according to a tenth embodiment of the present invention;

[0048] Fig.11 A schematic cross-sectional view showing a cooling assembly according to an eleventh embodiment of the present invention;

[0049] Fig.12 A schematic cross-sectional view showing a cooling assembly according to a twelfth embodiment of the present invention;

[0050] Fig.13 A schematic cross-sectional view showing a cooling assembly according to a thirteenth embodiment of the present invention;

[0051] Fig.14 A schematic cross-sectional view showing a cooling assembly according to a fourteenth embodiment of the present invention;

[0052] Fig.15 A schematic cross-sectional view and a perspective view showing a magnetic core of a cooling assembly according to a thirteenth or fourteenth embodiment of the present invention;

[0053] Fig.16 An exploded schematic diagram of a cooling assembly according to a thirteenth embodiment of the present invention is shown;

[0054] Fig.17An exploded schematic diagram of a cooling assembly according to a fourteenth embodiment of the present invention is shown;

[0055] Fig.18 A schematic cross-sectional view showing a cooling assembly according to a fifteenth embodiment of the present invention;

[0056] Fig.19 A circuit schematic diagram showing an embodiment of a transformer including a cooling assembly according to any of the embodiments. DETAILED DESCRIPTION

[0057] Figure 1 A schematic cross-sectional view of a cooling assembly 1 according to a first embodiment of the present invention is shown.

[0058] The cooling assembly 1 includes at least one magnetic core 20. Figure 1 , but at least one magnetic core 20 includes a main body portion 21 (see, for example, Fig.15 ). In addition, from Figure 1 As can be seen in FIG. 1 , at least one magnetic core includes a plurality of pillar portions 22. The pillar portions 22 are connected to the main body portion 21 and extend from the main body portion 21 along the pillar extension direction 2.

[0059] In addition, the cooling component 1 includes a winding 3 wound on at least one pillar portion 22 with a predetermined number of turns. In the present embodiment, the cooling component 1 includes one winding 3. The pillar portion 22 on which the winding 3 is wound is also referred to as a winding pillar portion 23 of the magnetic core 20. The pillar portion 22 on which no winding 3 is wound is also referred to as a return pillar portion 25. The return pillar portion 25 substantially closes the magnetic circuit formed by the induction of the winding 3 in the winding pillar portion 23 and the main body portion 21.

[0060] The cooling assembly 1 further comprises a base 30 for accommodating the magnetic core 20 and the winding 3. As can be clearly seen from the figure, the base 30 is a separate component relative to the magnetic core 20 and the winding 3.

[0061] The base 30 includes at least one heat dissipation portion 31, two heat dissipation portions 31 in this embodiment, adjacent to at least one of the at least one winding 3. In this embodiment, the base 30 includes two heat dissipation portions 31, and both heat dissipation portions 31 are adjacent to one winding 3.

[0062] Each heat dissipation portion 31 comprises a surface 32, the shape of which is at least in a cross section perpendicular to the extension direction 2 of the support, that is, in Figure 1In the cross-sectional view of FIG. 3 , the surface 32 corresponds to the shape of at least one adjacent portion 4 of the adjacent at least one winding 3. In the present embodiment, the surface 32 is a concave surface. In other words, in the present embodiment, each heat dissipation portion 31 includes a shape corresponding to the shape of the adjacent portion 4 of the winding 3 adjacent to the respective heat dissipation portion 31. In the present embodiment, the winding 3 is substantially elliptical or stadium-shaped, and the corresponding adjacent portion 4 of the winding 3 has a quarter circle shape.

[0063] Since the heat dissipating portion 31 of the base 30 has the concave surface 32 corresponding to the shape of the adjacent portion 4 of the winding 3 , the heat dissipating portion 31 can be adjacent to the winding 3 .

[0064] In this regard, the term "close to" preferably means that the distance between the winding 3 and the heat dissipation portion 31 is equal to or greater than the insulation distance required for its electrical insulation, and the gap between the two elements is as small as possible so that they do not touch each other. As a result, the distance between the base and the winding 3 and / or the support portion 22 of the magnetic core is reduced, thereby improving the cooling effect and reducing the overall volume of the cooling assembly 1.

[0065] In addition, if Figure 1 As shown, the return support portion 25 also includes a concave shape, in particular, a concave surface 26 corresponding to the shape of the winding support portion 23 and the winding 3 adjacent to the corresponding return support portion 25. In addition, the shape of each return support portion 25 is similar to the shape of the heat dissipation portion 31. The return support portion 25 is arranged opposite to the heat dissipation portion 31 of the base 30. In this regard, Figure 1 As is apparent from the figure, the term "similar in shape" with respect to the return pillar portion 25 relative to the heat dissipation portion 31 means that the shape of the return pillar portion 25 is generally similar to or the same as the shape of the heat dissipation portion 31, and is larger in size, especially along the height direction 5 perpendicular to the pillar extension direction 2. In particular, the return pillar portion 25 includes a concave surface 26 and a straight portion 27 extending from the concave surface 26 along the height direction 5 toward the heat dissipation portion 31 of the base 30.

[0066] In this way, the return support portion 25 can be in close proximity to the winding 3 and the winding support portion 23 as well as the heat dissipation portion 31 of the base 30 , thereby improving the cooling effect and reducing the overall volume of the cooling assembly 1 .

[0067] Furthermore, the base 30 comprises a main body portion 33, which in the present embodiment has a substantially rectangular shape. In particular, the main body portion 33 of the present embodiment has a semi-rectangular shape. Although not shown, the base 30 may further comprise a cover portion, which is preferably placed on top of the main body portion 33 in the height direction 5 so as to close the base 30, for example, the base 30 thus has a full rectangular shape. For example, the cover portion may be formed by a bottom plate, which is preferably formed by a printed circuit board (PCB).

[0068] In this embodiment, the heat dissipation portion 31 and the main body portion 33 of the base 30 are independent components. In particular, the heat dissipation portion 31 is placed in the base 30, in particular, in the main body portion 33 of the base 30.

[0069] Figure 2a , Figure 2b A schematic cross-sectional view of a cooling assembly 1 according to a second embodiment of the present invention is shown.

[0070] and Figure 1 compared to, Figure 2a The heat dissipation portion 31 is shown and illustrated, and the heat dissipation portion 31 is integrally formed with the main body portion 33 of the base 30, especially integrally formed.

[0071] The base 30 includes a heat dissipation portion 31 adjacent to the winding 3, in particular, the heat dissipation portion 31 adjacent to the adjacent portion 4 of the winding 3. The heat dissipation portion 31 includes a concave surface 32 having a semicircular shape. The corresponding adjacent portion 4 of the winding 3 also has a semicircular shape.

[0072] The winding leg portion 23 and the return leg portion 25 have the same shape as in the first embodiment.

[0073] Therefore, since the main body 33 and the heat dissipation part 31 are integrally formed, especially integrally formed, the thermal resistance between the heat dissipation part 31 and the main body 33 of the base 30 is further reduced, thereby improving the cooling efficiency. In addition, the total volume of the cooling assembly 1 is further reduced.

[0074] from Figure 2b (Modification of the second embodiment is shown) It can be seen that the winding 3 is not necessarily circular, but can be preferably rectangular, in particular square. In particular, as shown in the figure, the winding 3 includes rounded edges. The heat dissipation portion 31 includes a surface 32, the shape of which corresponds to the corresponding adjacent portion 4 of the winding 3, that is, the rounded edge of the winding 3.

[0075] Furthermore, the return support portion 25 is rectangular. In particular, the return support portion 25 can be completely rectangular or, as shown, can include a concave surface 26, the curvature of which corresponds to the curvature of the rounded edge of the adjacent winding 3. In order to adapt to the winding 3, the winding support portion 23 also includes a generally rectangular shape with rounded edges.

[0076] Figure 3 A schematic cross-sectional view of a cooling assembly 1 according to a third embodiment of the present invention is shown.

[0077] In this embodiment, the magnetic core 20 includes a main body portion (not shown) and two pillar portions 22. In addition, in this embodiment, the winding 3 is arranged and wound on each pillar portion 22, so that these pillar portions 22 are winding pillar portions 23.

[0078] The base 30 includes a main body portion 33 and two heat dissipation portions 31 . Each heat dissipation portion 31 is disposed adjacent to one winding 3 . In particular, each heat dissipation portion 31 includes a quarter-circular concave surface 32 adjacent to a quarter-circular adjacent portion 4 of the corresponding winding 3 .

[0079] In this embodiment, the heat dissipation portion 31 is integrally formed with the main body portion 33 of the base 30 , in particular, integrally formed. Alternatively, the heat dissipation portion 31 can also be formed separately from the main body portion 33 , for example, placed in the main body portion 33 .

[0080] Specifically, the heat dissipation portion 31 is formed or provided in a corner of the body portion 33 .

[0081] Figure 4 A schematic cross-sectional view of a cooling assembly 1 according to a fourth embodiment of the present invention is shown.

[0082] Compared with the third embodiment, the cooling assembly 1 of this embodiment further includes an additional heat dissipation portion 31 disposed between two adjacent winding support portions 23. In particular, the additional heat dissipation portion 31 is disposed between adjacent winding support portions 23 along a width direction 6 perpendicular to the height direction 5 and the support extension direction 2. In other words, Figure 4 It can be seen from the cross-sectional view that the additional heat dissipation portion 31 is sandwiched between two adjacent winding leg portions 23.

[0083] The heat dissipation portion 31 disposed between the two winding support portions 23 includes two concave surfaces 32 , each of which includes a quarter circle. The shape of each concave surface 32 corresponds to the corresponding adjacent portion 4 of the winding 3 .

[0084] Therefore, along the width direction 6 ( Figure 4As shown in FIG. 1 , from left to right in FIG. 1 , the base 30 includes a first heat dissipation portion 31 having a quarter-circular concave surface 32, a second heat dissipation portion 31 having two quarter-circular concave surfaces 32, and a third heat dissipation portion 31 also having one quarter-circular concave surface 32. Here, two outer heat dissipation portions 31 respectively arranged adjacent to one winding 3 are integrally formed with the main body portion 33. On the other hand, the heat dissipation portion 31 arranged between and adjacent to the two windings 3 is arranged separately from the main body portion 33.

[0085] Figure 5 A schematic cross-sectional view of a cooling assembly 1 according to a fifth embodiment of the present invention is shown.

[0086] Here, compared with the fourth embodiment, the heat dissipation part 31 disposed between the two windings 3, especially between the two winding support parts 23, is not only integrally formed with the outer heat dissipation part 31 of the base 30, but also integrally formed with the main body part 33. Here, all heat dissipation parts are integrally formed with the main body part 33 of the base 30, especially integrally formed.

[0087] Therefore, the base 30 in this embodiment can also be regarded as comprising two heat dissipation portions 31 , each heat dissipation portion 31 having a semicircular concave surface 32 .

[0088] Figure 6 A schematic cross-sectional view of a cooling assembly 1 according to a sixth embodiment of the present invention is shown.

[0089] In the present embodiment, the magnetic core 20 includes three pillar portions 22. Each pillar portion 22 includes a winding 3 wound thereon, so the magnetic core 20 of the present embodiment includes three winding pillar portions 23. Along the width direction 6, the middle pillar portion 24 is defined as the pillar portion 22, that is, the winding pillar portion 23 disposed between the other two outer pillar portions 22.

[0090] In addition, from Figure 6 As can be seen, similar to the third embodiment, the base 30 of this embodiment includes two heat dissipation parts 31 respectively arranged adjacent to one winding 3, especially adjacent to the adjacent part 4 of the corresponding winding 3. The two heat dissipation parts 31 include a quarter-circular surface 32, and are integrally formed with the main body part 33 of the base 30, especially integrally formed.

[0091] Here, the heat dissipation portion 31 is not provided adjacent to the middle pillar portion 24 .

[0092] Figure 7 A schematic cross-sectional view of a cooling assembly 1 according to a seventh embodiment of the present invention is shown.

[0093] and Figure 4Similar to the fourth embodiment shown, the base 30 of the cooling assembly 1 according to this embodiment includes additional heat dissipation portions 31 respectively arranged between two of the three winding support portions 23. In other words, each additional heat dissipation portion 31 is sandwiched by two winding support portions 23 along the width direction 6. In particular, the additional heat dissipation portions 31 are all arranged adjacent to the middle support portion 24.

[0094] Each heat dissipation portion 31 disposed adjacent to the middle pillar portion 24 includes two concave surfaces 32 , each concave surface 32 is a quarter circle, and corresponds to a quarter circle adjacent portion 4 of a corresponding winding 3 of the adjacent middle pillar portion 24 .

[0095] In general, the base 30 of the cooling assembly 1 of the present embodiment includes four heat dissipation parts 31. Here, the heat dissipation part 31 disposed between the two winding support parts 23, that is, the heat dissipation part 31 disposed adjacent to the middle support part 24, is disposed separately from the main body part 33. In other words, the heat dissipation part 31 is not integral or integrally formed with the main body part 33 of the base 30.

[0096] When the two heat sink portions 31 adjacent to the middle leg portion 24 are considered together, they substantially include or define a semicircular surface that corresponds to the semicircular adjacent portion 4 of the winding 3 of the middle leg portion 24 adjacent to both heat sink portions 31. Therefore, in a preferred variation of this embodiment, the base 30 includes a heat sink portion 31 adjacent to the middle leg portion 24 and including a semicircular concave surface 32.

[0097] Figure 8 A schematic cross-sectional view of a cooling assembly 1 according to an eighth embodiment of the present invention is shown.

[0098] and Figure 7 Compared with the seventh embodiment shown, the heat dissipation part 31 of the cooling assembly 1 of this embodiment, which is respectively arranged between the two winding support parts 23, that is, the heat dissipation part 31 adjacent to the middle support part 24, is integrally formed with the main part 33 of the base 30, especially integrally formed.

[0099] In addition, Figure 7 In contrast, when the heat dissipation portions 31 adjacent to the middle support portion 24 are integrally formed or formed in one piece, these heat dissipation portions 31 can be regarded as one heat dissipation portion having a semicircular surface 32 .

[0100] Fig. 9 A schematic cross-sectional view of a cooling assembly 1 according to a ninth embodiment of the present invention is shown.

[0101] like Fig. 9 and Figure 3As shown in the comparison of the third embodiment shown, the cooling assembly 1 of this embodiment includes a magnetic core 20 having two winding pillar portions 23 and a return pillar portion 25. Here, the return pillar portion 25 is arranged between the winding pillar portions 23 along the width direction 6, in particular, between the windings 3 of each winding pillar portion 23. Here, the return pillar portion 25 includes four concave surfaces 26, wherein each of the four concave surfaces 26 is a quarter circle and corresponds to an adjacent portion 4 of an adjacent winding 3. In particular, the return pillar portion 25 includes two concave surfaces 26 adjacent to one winding 3 and two other concave surfaces 26 adjacent to another winding 3. The concave surfaces 26 are connected by a straight portion 27 of the return pillar portion 25. Therefore, in Fig. 9 In the cross-sectional view shown, the return strut portion 25 is generally "I"-shaped (capital "I" with a bar).

[0102] Fig.10 A schematic cross-sectional view of a cooling assembly 1 according to a tenth embodiment of the present invention is shown.

[0103] like Fig.10 with (for example) Figure 7 Embodiment 7 and Fig. 9 As shown in the comparison with the ninth embodiment, the cooling assembly 1 of this embodiment includes a magnetic core having two winding leg portions 23 and one return leg portion 25 .

[0104] Here, the return leg portion 25 includes two concave surfaces 26 that are respectively adjacent to the adjacent windings 3 of the winding leg portion 23. The return leg portion 25 is arranged between the two winding leg portions 23 along the width direction 6.

[0105] In addition, the base 30 of the present embodiment includes a heat dissipation portion 31 which is also arranged between the two winding pillar portions 23 along the width direction 6 and adjacent to the winding 3 thereof. The heat dissipation portion 31 is arranged opposite to the return pillar portion 25, and vice versa. In particular, the heat dissipation portion 31 arranged between the two winding pillar portions 23 includes two concave surfaces 32, each of which corresponds to the shape of the adjacent portion 4 of the adjacent winding 3, respectively.

[0106] In addition, in this embodiment, the heat dissipation part 31 disposed between the two winding support parts 23 is formed separately from the main part 33 of the base 30. The two heat dissipation parts 31 disposed adjacent to each winding support part 23 are integrally formed with the main part 33 of the base 30, especially integrally formed.

[0107] Fig.11 A schematic cross-sectional view of a cooling assembly 1 according to an eleventh embodiment of the present invention is shown.

[0108] In this embodiment, Fig.10Compared with the embodiment 10 shown, the heat dissipation part 31 disposed between the two winding support parts 23 is integrally formed with the main part 33 of the base 30, especially integrally formed. In this embodiment, all heat dissipation parts 31 are integrally formed with the main part 33, especially integrally formed.

[0109] Fig.12 A schematic cross-sectional view of a cooling assembly 1 according to a twelfth embodiment of the present invention is shown.

[0110] In the present embodiment, the cooling assembly 1 includes a magnetic core 20 having a main body portion (not shown) and five leg portions 22. In particular, the magnetic core 20 includes three winding leg portions 23 and two return leg portions 25.

[0111] Among them, Fig. 9 As described in the ninth embodiment, each of the backflow support portions 25 includes four concave surfaces 26 and a straight portion 27 connecting the concave surfaces 26 .

[0112] Each concave surface 26 is adjacent to a neighboring portion 4 of a winding 3 of a neighboring winding leg portion 23 and has a shape of a quarter circle. In particular, each return leg portion 25 is in an "I" shape. On the other hand, as Figure 2b As shown, the return pillar portion 25 may be generally in the shape of a strip or a rectangle.

[0113] Fig.13 A schematic cross-sectional view of a cooling assembly 1 according to a thirteenth embodiment of the present invention is shown.

[0114] The cooling assembly 1 of the present embodiment includes three winding leg portions 23 and two return leg portions 25 , wherein the two return leg portions 25 are respectively arranged between the two winding leg portions 23 along the width direction 6 .

[0115] Here, with Fig.10 Similar to the illustrated embodiment 10, each return support portion 25 includes two concave surfaces 26, each corresponding to an adjacent portion 4 of a winding 3 adjacent thereto.

[0116] In addition, the base 30 further includes two heat dissipation portions 31, each of which is disposed between the two winding support portions 23 along the width direction 6 and is opposite to the return support portion 25. Each of the two heat dissipation portions 31 includes two concave surfaces 32, respectively corresponding to an adjacent portion 4 of a winding 3 adjacent thereto. In addition, the two heat dissipation portions 31 are formed separately from the main body portion 33 of the base 30, that is, they are not integrally formed or integrally formed.

[0117] Fig.14 A schematic cross-sectional view of a cooling assembly 1 according to a fourteenth embodiment of the present invention is shown.

[0118] In the present embodiment, the two heat dissipation parts 31 disposed between the two winding support parts 23 along the width direction 6 are integrally formed with the main body part 33 of the base 30 , in particular, integrally formed.

[0119] In addition, Figure 1 As in the illustrated embodiment 1, the return pillar portions 25 of the tenth, eleventh, thirteenth and fourteenth embodiments also include a shape corresponding to the shape of the adjacent portion 4 of the adjacent winding 3. In addition, the shape of the return pillar portion 25 is similar to the shape of the heat dissipation portion 31 disposed between the winding pillar portions 23 along the width direction 6. The return pillar portion 25 includes two concave surfaces 26 and a straight portion 27, wherein the straight portion 27 extends along the height direction 5 toward the heat dissipation portion 31 of the base 30 opposite to the return pillar portion 25.

[0120] Preferably, the gaps between the elements of the cooling assembly 1 shown in the figure, especially the gaps between the heat dissipation part 31 or the main part 33 of the base 30 and the winding 3 or the return support part 25, or the gaps between the heat dissipation part 31 and the main part 33 of the base 30, are filled with potting material or thermal conductive paste (not shown).

[0121] Fig.15 Show Fig.13 and Fig.14 Schematic cross-sectional views and perspective views of a magnetic core 20 of a cooling assembly 1 according to a thirteenth or fourteenth embodiment of the present invention are shown.

[0122] from Fig.15 As can be seen in FIG. 1 , the magnetic core 20 includes a plurality of pillar portions 22, in particular a winding pillar portion 23 and a return pillar portion 25, and a main body portion 21. The main body portion 21 connects the pillar portions 22 extending from the main body portion 21 along the pillar extension direction 2.

[0123] If you will Fig.16 and Fig.17 To illustrate, the cooling assembly 1 preferably includes more than one magnetic core 20, wherein the two magnetic cores 20 are preferably opposite to each other in the direction 2 in which the pillars extend. In other words, their main body portions 21 are opposite to each other, and their respective pillar portions 22 extend toward the pillar portion 22 of the other magnetic core 20. In addition, more than two magnetic cores 20 may be provided. Among them, one magnetic core 20 (for example, the third magnetic core 20) may be arranged so that its pillar portion 22 extends toward the main body portion 21 of the other magnetic core 20. This arrangement is also generally referred to as the "EE" arrangement or And other arrangements.

[0124] Fig.16 A schematic exploded view of a cooling assembly 1 according to a thirteenth embodiment of the present invention is shown.

[0125] exist Fig.16 In the exploded view shown, the magnetic core 20 and the winding 3 are separated from the heat dissipation portion 31 and the main body portion 33 of the base 30. More specifically, Fig.16 The heat dissipation portion 31 is shown to be arranged between adjacent windings 3 and separated from the main body portion 33, while the heat dissipation portion 31 arranged between the main body portion 33 and the adjacent windings 3 (see also embodiments seven and thirteen) is shown to be within the main body portion 33 of the base 30 because these heat dissipation portions are integrally formed with the main body portion 33 of the base 30.

[0126] In this embodiment, the cooling assembly 1 includes a plurality of magnetic cores 20. More specifically, in this embodiment, the cooling assembly 1 includes three magnetic cores 20, in particular Arrangement.

[0127] Each magnetic core 20 includes three winding leg portions 23 (not visible) and two return leg portions 25 connected to the main body portion 33. In addition, each magnetic core 20 includes a winding 3 (not visible) wound on each winding leg portion with a predetermined number of turns. The winding 3 of the top magnetic core 20 can form a choke, the winding 3 of the middle magnetic core 20 can form the primary side, and the winding 3 of the bottom magnetic core 20 can form the secondary side. The winding 3 is completely covered by the insulating material 7 and is therefore not visible in this figure. The insulating material 7 is, for example, Kapton polyimide film.

[0128] In addition, in addition to the heat dissipation part 31, the base 30 also includes a second heat dissipation part 34, which is also arranged between adjacent windings 3 and between an adjacent winding 3 and the main body part 33 of the base 30. These second heat dissipation parts 34 include smaller dimensions along the pillar extension direction 2 so as to accommodate the smaller winding 3 of the top magnetic core 20, that is, the smaller choke winding 3.

[0129] Fig.17 A schematic exploded view of a cooling assembly 1 according to a fourteenth embodiment of the present invention is shown.

[0130] Fig.17 Also shown is a cooling assembly comprising three magnetic cores 20, as described above for Fig.16 Here, the heat dissipation parts 31, 34 are integrally formed with the main body part 33 of the base 30, and in particular, are integrally formed.

[0131] Fig.18 A schematic cross-sectional view of a cooling assembly 1 according to a fifteenth embodiment of the present invention is shown.

[0132] Here, with e.g. Fig.14Compared with the fourteenth embodiment, the base 30 includes a cooling channel 35 for allowing a cooling fluid (not shown) to pass through. The cooling channel 35 is particularly formed in the heat dissipation portion 31 between adjacent windings 3. In some embodiments, the cooling channel 35 is only formed in the heat dissipation portion 31.

[0133] The cooling channel 35 extends longitudinally, ie, along the flow direction of the cooling fluid, parallel to the direction 2 in which the strut extends.

[0134] Therefore, the base 30 is used to effectively cool the winding 3 and the pillar portion 22 of the magnetic core 20. In addition, since the heat dissipation portion 31 is arranged in close proximity to the winding 3, together with the cooling channel 35, cooling can be synergistically achieved with higher efficiency and effect.

[0135] In the above, the term "integrally formed, in particular integrally formed" is used. In this article, the term "integrally formed" means, for example, being formed separately from each other, but being connected together in a particularly non-detachable manner (in particular, a non-detachable manner that does not destroy itself), for example, being welded together. The term "integrally formed" means that two or more respective elements or parts are formed from one component, for example, integrally cast.

[0136] Fig.19 A schematic diagram of an embodiment of a transformer 100 comprising a cooling assembly 1 according to any of the embodiments is shown.

[0137] The transformer 100 is an example of a magnetic component including the cooling assembly 1. Alternatively, the magnetic component may also be a choke or an inductor.

[0138] The transformer 100 includes a cooling assembly 1, and the cooling assembly 1 includes two magnetic cores 20. The winding 3 of one magnetic core 20 corresponds to the primary winding of the transformer 100, and the winding 3 of the other magnetic core 20 corresponds to the secondary winding of the transformer 100. Fig.16 and Fig.17 As mentioned, the cooling assembly 1 may comprise an additional magnetic core 20, wherein its winding 3 may be used, for example, as a choke winding of the transformer 100. In this context, for demonstration purposes, only the base 30 is schematically shown.

[0139] The transformer 100 includes an input side 101 to which an input voltage Vin is input and an output side 102 to which an output voltage Vout is output.

[0140] Thus, the present invention provides a transformer 100 that is compact in size and high in efficiency.

[0141] In addition to the foregoing written explanations, explicit reference is made to Figures 1 to 19 , wherein a configuration example of the present invention is shown in detail, in particular, the shapes of the elements of the cooling assembly 1 are shown.

[0142] Reference numerals list

[0143] 1Cooling components

[0144] 2 Pillar extension direction

[0145] 3 Winding

[0146] 4 Adjacent parts

[0147] 5Height direction

[0148] 6Width direction

[0149] 7. Insulation Materials

[0150] 20 cores

[0151] 21 Main part

[0152] 22 Pillar section

[0153] 23 Winding support part

[0154] 24 Middle pillar part

[0155] 25 Reflux Support Section

[0156] 26 Concave surface of the support part

[0157] 27 straight part

[0158] 30 base

[0159] 31 Heat dissipation part

[0160] 32 Concave surface of heat dissipation part

[0161] 33 Main part

[0162] 34 Second heat dissipation part

[0163] 35 cooling channels

[0164] 100 Transformer

[0165] 101 Transformer Input

[0166] 102 transformer output

[0167] Vin input voltage

[0168] Vout output voltage

Claims

1. A cooling assembly (1) for a magnetic component, comprising: At least one magnetic core (20) comprising a main body portion (21) and a plurality of pillar portions (22) extending from the main body portion (21) along a pillar extension direction (2); at least one winding (3) wound on at least one of the pillar portions (22) as a winding pillar portion (23) of the magnetic core (20); A base (30) for accommodating the at least one magnetic core (20) and the at least one winding (3), The base (30) comprises at least one heat dissipation portion (31) adjacent to at least one of the at least one winding (3), and the at least one heat dissipation portion (31) comprises a shape corresponding to the shape of an adjacent portion (4) of the at least one adjacent winding (3) at least in a cross section perpendicular to the extension direction (2) of the support.

2. The cooling assembly (1) according to claim 1, wherein: The at least one heat dissipation portion (31) comprises at least one concave surface (32) respectively corresponding to the shape of an adjacent portion (4) of at least one winding (3) adjacent to the at least one heat dissipation portion (31).

3. The cooling assembly (1) according to claim 2, wherein: Each concave surface (32) is semicircular or quarter-circular.

4. The cooling assembly (1) according to claim 2, wherein: The magnetic core (20) comprises three leg portions (22), wherein at least the middle leg portion (24) of the three leg portions (22) is a winding leg portion (23) and is rounded or comprises rounded edges.

5. The cooling assembly (1) according to claim 4, wherein: The base (30) includes two heat dissipation parts (31), both of which are adjacent to the winding (3) of the middle pillar part (24), and each of the two heat dissipation parts (31) includes a quarter-circular surface, so that when combined together, they basically correspond to the shape of the adjacent part (4) of the winding (3) and / or the middle pillar part (24).

6. The cooling assembly (1) according to claim 4, wherein: The base (30) includes a heat dissipation portion (31) adjacent to the winding (3) of the middle pillar portion (24), and the heat dissipation portion (31) includes a semicircular surface, thereby basically corresponding to the shape of the adjacent portion (4) of the winding (3) and / or the middle pillar portion (24).

7. The cooling assembly (1) according to claim 1, wherein: The at least one magnetic core (20) comprises a plurality of winding pillar portions (23), wherein at least one heat dissipation portion (31) is respectively arranged between two adjacent winding pillar portions (23) and is perpendicular to the pillar extension direction (2).

8. The cooling assembly (1) according to claim 7, wherein: The at least one heat dissipation portion (31) includes two concave surfaces (32), each concave surface (32) includes a quarter-circular surface, and each quarter-circular surface corresponds to a respective adjacent winding leg portion (23) and / or a respective adjacent portion (4) of the respective adjacent winding leg portion (23).

9. The cooling assembly (1) according to claim 1, wherein: The base (30) also includes a main body portion (33) having a generally rectangular shape.

10. The cooling assembly (1) according to claim 1, wherein: The base (30) includes a plurality of cooling channels.

11. The cooling assembly (1) according to claim 10, wherein the plurality of cooling channels are formed in the at least one heat dissipation portion (31).

12. The cooling assembly (1) according to claim 1, wherein at least the at least one heat dissipation portion (31) in the base (30) comprises a paramagnetic material.

13. The cooling assembly (1) according to claim 1, wherein: The at least one magnetic core (20) includes at least one return pillar portion (25) as one of the pillar portions (22), and wherein at least one return pillar portion (25) includes a shape corresponding to the shape of the winding pillar portion (23) and / or the shape of the winding (3) adjacent to the return pillar portion (25) in a cross section perpendicular to the pillar extension direction (2).

14. The cooling assembly (1) according to claim 13, wherein: At least one return support portion (25) includes a concave surface (26) in a cross section perpendicular to the support extension direction (2), and is arranged to be opposite to at least one heat dissipation portion (31) of the base (30) perpendicular to the support extension direction (2).

15. A magnetic component (100) comprising at least one cooling assembly (1) according to any one of claims 1 to 14.

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