Inductance module of rectifying device

Abstract

The utility model belongs to the technical field of high-frequency rectifiers, and particularly relates to an inductance module of a rectifying device, which comprises a first radiator, a magnetic core and a plurality of windings, the first radiator comprises a conductive shell, a radiating pipeline is arranged in the shell, the shell is provided with a plurality of first winding parts which are transversely arranged at intervals, and the magnetic core is arranged in the first winding parts. The magnetic core is assembled on the first radiator and is provided with a plurality of second winding parts corresponding to the first winding parts, each winding comprises a conductor winding a plurality of circles around the first winding part and the second winding part of the corresponding group, and one end, located at the inner circle, of the conductor is electrically connected with the shell; due to the fact that the winding is wound on the first radiator and the magnetic core at the same time, and the shell serves as an electrode, the magnetic core and the winding can make contact with the first radiator, mutual heat transfer resistance is reduced, synchronous cooling is achieved, after the winding is divided into a plurality of windings, heat can be dispersed, and the heat dissipation area of the winding is further increased. And the power of the inductance module is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-frequency rectifiers, in particular to an inductance module of a rectifier device. Background Art

[0002] Inductors are key components of high-frequency rectifiers. Thermal conductive inductors are widely used in liquid-cooled high-frequency rectifiers because they do not require cooling pipes to dissipate heat, have simple production processes, have no risk of leakage or blockage, and can reduce the internal pipe interface of the equipment. Thermal conductive inductors are mostly made of EE-type magnetic cores and single windings, which are then potted with thermal conductive potting aluminum boxes and installed on liquid-cooled radiators. The heat generated during operation is transferred from the windings to the magnetic cores, and then from the magnetic cores to the thermal conductive potting aluminum box, and finally the heat is transferred to the liquid-cooled radiator and taken away by the coolant. Due to the long and single heat transfer path, its thermal resistance is large, and only a single surface of the EE-type magnetic core is in contact with the thermal conductive potting aluminum box, resulting in a small heat dissipation area. When used in specifications with a large number of windings or a large current, the windings overlap and concentrate in multiple layers, causing the heat to be concentrated in the center of the inductor and difficult to be discharged, which ultimately causes the core temperature to be too high and saturated, which has a serious impact on the reliability and electrical performance of the equipment. Therefore, it is very necessary to develop an inductor module that can improve the heat dissipation efficiency. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide an inductor module that can improve heat dissipation efficiency.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An inductor module of a rectifier device comprises a first heat sink, a magnetic core and a plurality of windings, wherein the first heat sink comprises a conductive shell, a heat dissipation pipeline is arranged inside the shell, the shell is provided with a plurality of first winding parts arranged laterally at intervals, the magnetic core is mounted on the first heat sink, and is provided with a plurality of second winding parts corresponding to the first winding parts, each of the windings comprises a conductor wound around a corresponding group of first winding parts and second winding parts for a plurality of turns, and the conductor is electrically connected to the shell at one end located in its inner turn.

[0006] Compared with the prior art, the inductor module provided by the present invention has a magnetic core placed on the first heat sink, a winding wound on the first heat sink and the magnetic core at the same time, and a shell of the first heat sink is used as an electrode, so that the magnetic core and the winding can directly contact the first heat sink, thereby reducing the thermal transfer resistance between each other and achieving synchronous cooling. When the winding is divided into several parts, the heat can be dispersed and the heat dissipation area of ​​the winding can be further increased. Through the above heat dissipation optimization, the power of the inductor module is greatly improved.

[0007] Furthermore, notches recessed inward are respectively provided on opposite sides of the shell, a first winding hole is opened in the shell between the notches, and the first winding portion is formed between the first winding hole and the corresponding notch.

[0008] Furthermore, the conductor located outside the first winding portion and the second winding portion is received in the notch.

[0009] Further, the winding includes a first winding and a second winding, the winding directions of the conductors of the first winding and the second winding are opposite, and the ends of the conductors of the first winding and the second winding located at their outer circles are connected in parallel through a copper bar. Alternatively, the winding directions of the conductors of the first winding and the second winding are the same, and the ends of the conductors of the first winding and the second winding located at their outer circles serve as the electrode connection ends of the inductor, so that the first winding and the second winding form a series relationship. In a specific embodiment, the inductor module is used to connect with the main transformer, and when the directions of the conductors of the first winding and the second winding are opposite, the first radiator is connected to the center tap of the secondary winding of the main transformer and used as a negative electrode, and one end of the winding of the inductor module is mounted on the first radiator, and the other end is led out in parallel through a copper bar. When the directions of the conductors of the first winding and the second winding are the same, the first radiator serves as a circuit connector between the two windings, so that the two windings form a series circuit, and the conductors of the first winding and the second winding serve as the two electrode connection ends of the series circuit. The electrode connection end of the present invention can be understood as an electrode interface, a pin or a terminal.

[0010] Furthermore, one end of the conductor located at its inner circle is in contact with the bottom surface of the shell, and it extends to both sides along the length direction of the first winding portion to form a connecting protrusion, and the connecting protrusion is fixedly connected to the shell by screws.

[0011] Furthermore, it also includes side panels arranged on opposite sides of the first radiator, a bottom plate arranged at the bottom of the first radiator, and a top plate, a front plate and a rear plate respectively arranged on the upper side, the front side and the rear side of the winding, wherein the side panels, the bottom plate, the top plate, the front plate and the rear plate are combined to form a accommodating cavity surrounding the winding and the magnetic core, a gap is left between the front plate and the top plate, and the accommodating cavity is filled with a heat-conducting medium in contact with the side panels, the bottom plate, the top plate, the front plate and the rear plate.

[0012] Furthermore, it also includes a second radiator arranged above the winding, a heat dissipation pipeline is configured inside the second radiator, the second radiator constitutes the top plate, and the upper ends of the side plates and the rear plate are fixedly connected to the second radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 and Figure 2is a three-dimensional diagram of the inductor module;

[0014] Figure 3 and Figure 4 It is a schematic diagram of the structure of a first heat sink, a second heat sink, a magnetic core and a winding;

[0015] Figure 5 is an exploded view of a first heat sink, a second heat sink, a magnetic core and a winding;

[0016] Figure 6 It is a cross-sectional view of two sets of windings connected in parallel;

[0017] Figure 7 This is a cross-sectional view of two sets of windings connected in series. DETAILED DESCRIPTION

[0018] A preferred specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0019] See also Figures 1 to 5 The present embodiment provides an inductor module of a rectifier device, comprising a first heat sink 1, a magnetic core 2 and a plurality of windings 3, wherein the first heat sink 1 comprises a conductive shell 11, a heat dissipation pipeline is arranged inside the shell 11, and the material of the shell 11 can be selected from aluminum material with good thermal conductivity, the shell 11 is provided with a plurality of first winding parts 12 arranged laterally at intervals, and the gap between two adjacent first winding parts 12 can be used for winding the winding 3, the magnetic core 2 is mounted on the upper side of the first heat sink 1, which is in contact with the shell 11, and is provided with a plurality of second winding parts 21 corresponding to the first winding parts 12, and each winding 3 comprises a conductor 31 respectively wound around a corresponding group of first winding parts 12 and second winding parts 21 for a plurality of turns, and the conductor 31 is located at one end of its inner turn and is electrically connected to the shell 11.

[0020] See also Figure 3 and Figure 5 The shell 11 has notches 13 recessed inwardly on opposite sides thereof, and the shell 11 has a first winding hole 14 between the notches 13. A first winding portion 12 is formed between the first winding hole 14 and the corresponding notch 13. A conductor 31 located outside the first winding portion 12 and the second winding portion 21 is accommodated in the notch 13. The conductor 31 is accommodated in the notch 13, so that the winding 3 does not protrude out of the two sides of the first heat sink 1, thereby reducing the volume of the inductor.

[0021] See also Figures 3 to 6 In a specific configuration, the magnetic core 2 is configured as a CD-type magnetic core 2 , two first winding portions 12 and two second winding portions 21 are configured, and two windings 3 are configured, including a first winding 301 and a second winding 302 .

[0022] See also Figure 6In a winding method of the winding 3, the winding directions of the conductor 31 of the first winding 301 and the second winding 302 are opposite, and the ends of the conductor 31 of the first winding 301 and the second winding 302 located at the outer circles are connected in parallel through a copper bar 6. For example, the first end of the conductor 31 of the first winding 301 is installed on the shell 11 of the first radiator 1, and the second end is wound clockwise. The first end of the conductor 31 of the second winding 302 is installed on the shell 11 of the first radiator 1, and the second end is wound counterclockwise. The second ends of the first winding 301 and the second winding 302 are connected through the copper bar 6 to realize the parallel connection of the two windings 3. When the current specification is large, the heat generation of each winding 3 can be reduced by connecting the windings 3 in parallel.

[0023] See also Figure 7 In another winding method of the winding 3, the conductors 31 of the first winding 301 and the second winding 302 are wound in the same direction, and the conductors 31 of the first winding 301 and the second winding 302 are located at one end of their outer circles as the electrode connection end of the inductor. When the number of windings of the winding 3 is large, through the above-mentioned series setting method, compared with setting a single winding 3, the heat will be shared by the two windings 3, and will not accumulate in the inner circle position of one winding 3 and be difficult to conduct to the first heat sink 1.

[0024] See also Figure 4 and Figure 6 One end of the inner circle of the conductor 31 is in contact with the bottom surface of the shell 11, and it extends to both sides along the length direction of the first winding portion 12 to form a connecting protrusion 32, and the connecting protrusion 32 is fixedly connected to the shell 11 by screws.

[0025] See also Figure 1 and Figure 2 , further comprising side plates 41 arranged on opposite sides of the first radiator 1, a bottom plate 42 arranged at the bottom of the first radiator 1, and a top plate 43, a front plate 44 and a rear plate 45 respectively arranged on the upper side, front side and rear side of the winding 3, the side plates 41, the bottom plate 42, the top plate 43, the front plate 44 and the rear plate 45 enclose a receiving cavity 46 surrounding the winding 3 and the magnetic core 2, a gap is left between the front plate 44 and the top plate 43, the receiving cavity 46 is filled with a heat-conducting medium in contact with the side plates 41, the bottom plate 42, the top plate 43, the front plate 44 and the rear plate 45, the heat-conducting medium is a silicone potting glue or an epoxy resin potting glue, by setting the above-mentioned receiving cavity 46, the contact area between the winding 3, the magnetic core 2 and the shell 11 is increased by using the heat-conducting medium, thereby improving the thermal conductivity, and the above-mentioned gap can be used for the above-mentioned copper bar 6 to pass through, and for injecting the heat-conducting medium into the receiving cavity.

[0026] See also Figure 1 and Figure 2 In order to further improve the heat dissipation effect, it also includes a second radiator 5 arranged above the winding 3, and a heat dissipation pipeline is configured inside the second radiator 5. The second radiator 5 constitutes the top plate 43, and the upper ends of the side plate 41 and the rear plate 45 are fixedly connected to the second radiator 5.

[0027] Compared with the prior art, the inductor module provided by the present invention has a magnetic core 2 placed on the first radiator 1, and a winding 3 wound on both the first radiator 1 and the magnetic core 2, and uses the shell 11 of the first radiator 1 as an electrode, so that the magnetic core 2 and the winding 3 can directly contact the first radiator 1, reducing the thermal transfer resistance between each other and achieving synchronous cooling. When the winding 3 is divided into several parts, the heat can be dispersed and the heat dissipation area of ​​the winding 3 can be further increased. In particular, in a specific implementation using two windings 3, the two windings 3 can be connected in series or in parallel to achieve applications of different specifications, so that the inductor module of this solution can be more widely used. Through the above heat dissipation optimization, the power of the inductor module can be increased by at least 50%.

[0028] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. An inductor module of a rectifier device, characterized in that: include: A first heat sink (1) comprises a conductive shell (11), a heat dissipation pipeline is arranged inside the shell (11), and the shell (11) is provided with a plurality of first winding portions (12) arranged at intervals in a transverse direction; A magnetic core (2) mounted on the first heat sink (1), and provided with a plurality of second winding portions (21) corresponding to the first winding portions (12); A plurality of windings (3), each of the windings (3) comprising a conductor (31) wound a plurality of times around a corresponding group of first winding portions (12) and second winding portions (21), wherein one end of the conductor (31) located in the inner circle is electrically connected to the housing (11).

2. The inductor module according to claim 1, characterized in that: The shell (11) is provided with inwardly recessed notches (13) on opposite sides thereof, and the shell (11) is provided with a first winding hole (14) between the notches (13), and the first winding portion (12) is formed between the first winding hole (14) and the corresponding notch (13).

3. The inductor module according to claim 2, characterized in that: The conductor (31) located outside the first winding portion (12) and the second winding portion (21) is accommodated in the notch (13).

4. The inductor module according to claim 2, characterized in that: The winding (3) comprises a first winding (3) and a second winding (3); the conductors (31) wound around the first winding (3) and the second winding (3) are wound in opposite directions; the conductors (31) of the first winding (3) and the second winding (3) are connected in parallel at one end of their outer turns by a copper bar (6).

5. The inductor module according to claim 2, characterized in that: The winding (3) comprises a first winding (3) and a second winding (3); the conductors (31) of the first winding (3) and the second winding (3) are wound in the same direction; the conductors (31) of the first winding (3) and the second winding (3) are located at one end of their outer turns as an electrode connection end of the inductor.

6. The inductor module according to claim 1, characterized in that: One end of the conductor (31) located at its inner circle is in contact with the bottom surface of the shell (11), and it extends to both sides along the length direction of the first winding portion (12) to form a connecting protrusion (32), and the connecting protrusion (32) is fixedly connected to the shell (11) by screws.

7. The inductor module according to claim 1, characterized in that: The heat sink (1) further comprises side plates (41) arranged on opposite sides of the first heat sink (1), a bottom plate (42) arranged at the bottom of the first heat sink (1), and a top plate (43), a front plate (44) and a rear plate (45) respectively arranged on the upper side, the front side and the rear side of the winding (3), wherein the side plates (41), the bottom plate (42), the top plate (43), the front plate (44) and the rear plate (45) are combined to form a receiving cavity (46) surrounding the winding (3) and the magnetic core (2), a gap is left between the front plate (44) and the top plate (43), and the receiving cavity (46) is filled with a heat-conducting medium in contact with the side plates (41), the bottom plate (42), the top plate (43), the front plate (44) and the rear plate (45).

8. The inductor module according to claim 7, characterized in that: It also includes a second radiator (5) arranged above the winding (3), a heat dissipation pipeline being arranged inside the second radiator (5), the second radiator (5) constituting the top plate (43), and the upper ends of the side plates (41) and the rear plate (45) being fixedly connected to the second radiator (5).

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