High-power water-cooled inductor

Abstract

The utility model discloses a high-power water-cooled inductor, which comprises a shell, a water-cooled coil, a power supply module and a power supply module, the magnetic core is arranged on the shell and is positioned in the mounting cavity; the coil sleeves the outer side of the magnetic core, and the coil is positioned in the mounting cavity; the water cooling plate is arranged on one side of the shell; and the mounting cavity is filled with the heat-conducting glue. In the working process of the inductor, the coil can continuously generate heat due to internal resistance of the coil. Heat generated by the coil is transmitted to the shell through the heat-conducting glue so as to be transmitted to the water-cooling plate, cooling water flows through the water-cooling plate, the cooling water exchanges heat with the water-cooling plate, heat generated by working of the coil is taken away, and the working temperature of the high-power water-cooling inductor is maintained. Heat dissipation is carried out through water cooling, the heat dissipation efficiency is high, the volume increment caused by the arrangement of the water cooling plate is small, and the compact structural design of the high-power water cooling inductor is facilitated.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high-power inductors, in particular to a high-power water-cooled inductor. BACKGROUND

[0002] A high-power inductor is an electronic component used in circuits to handle large currents. High-power inductors are widely used in industrial control, automotive electronics, new energy, and high-current switching voltage stabilizers. High-power inductors generate heat during operation, mainly due to the resistance of the inductor when current passes through it, which causes the conversion of electrical energy into heat energy. If the inductor cannot effectively dissipate heat, the accumulation of heat will cause the temperature of the inductor to rise, thereby affecting the performance and lifespan of the inductor.

[0003] An inductor device (CN221766501U) specification 0026, 0036 paragraphs disclose: at least one of the first and second heat dissipation pieces 600 is used to contact the water-cooled plate of the device, and the first and second heat dissipation pieces 600 can be metal sheets or aluminum oxide ceramic sheets. Optionally, the first and second heat dissipation pieces 600 are integrated with the shell 100. The first and second heat dissipation pieces 600 are in contact with the heat dissipation part 500. The magnetic ring 200, the coil 300, and the heat dissipation part 500 are arranged in the area surrounded by the shell 100. The heat dissipation part 500 is arranged between the magnetic ring 200 and the coil 300, and extends to the outside of the shell 100 or the shell 100.

[0004] In the present application, the first and second heat dissipation pieces 500 and 600 are connected to the shell 100 at the top and bottom of the shell 100, respectively, so that the first and second heat dissipation pieces 500 and 600 are in contact with the water-cooled plate of the device, thereby further dissipating the heat generated by the magnetic ring 200 and the coil 300 to the outside of the inductor device 10, reducing the risk of heat concentration inside the inductor device 10, and further improving the heat dissipation of the inductor device 10.

[0005] An inductor forming method and an inductor (CN117690692B) specification 0051 paragraph discloses: specifically, please refer to Figure 2 and Figure 3 The inductor can adopt water-cooled heat dissipation, at which time the inductor and the water-cooled plate adopt a heat-conducting pad 9 to transfer heat, and the heat generated by the inductor is transferred to the water-cooled plate through the heat-conducting pad 9. Currently, when the inductor is applied in a vibrating environment, the heat-conducting pad 9 is prone to moving relative to the inductor, and after a long time, it is prone to separating from the inductor, thereby reducing the heat conduction efficiency. The heat-conducting pad positioning tooth 61 can press the heat-conducting pad 9 and form a recess on the heat-conducting pad 9, so that the heat-conducting pad 9 is not prone to moving relative to the inductor, thereby improving the heat dissipation stability of the inductor.

[0006] However, the thermal resistance in the existing water-cooled inductor is large, which leads to low heat transfer speed in the inductor, and the heat generated by the coil cannot be discharged in time, resulting in continuous temperature rise of the coil, which seriously affects the service life of the inductor.

[0007] Therefore, it is urgent to provide a high-power water-cooled inductor to reduce the thermal resistance in the inductor. Content of the utility model

[0008] The application provides a high-power water-cooled inductor, which aims to solve the problem of large thermal resistance in the inductor in the prior art.

[0009] To achieve the above-mentioned purpose, the application provides a high-power water-cooled inductor, which comprises: a shell, an installation cavity with one end open is arranged in the shell; a magnetic core, the magnetic core is arranged in the shell and located in the installation cavity; a coil, the coil is sleeved on the outer side of the magnetic core and located in the installation cavity; a water-cooled plate, the water-cooled plate is arranged on one side of the shell; and a heat-conducting glue, the installation cavity is filled with the heat-conducting glue.

[0010] In some embodiments, further comprising: a plurality of heat dissipation protrusions, the plurality of heat dissipation protrusions are arranged at intervals on the inner wall surface of the shell close to the water-cooled plate, and the plurality of heat dissipation protrusions are located in the installation cavity.

[0011] In some embodiments, further comprising: an insulating heat-conducting member, the insulating heat-conducting member is arranged between the coil and the shell, and the insulating heat-conducting member is located in the installation cavity.

[0012] In some embodiments, further comprising: a main mounting plate, the main mounting plate is arranged at one end of the coil; a secondary mounting plate, the secondary mounting plate is arranged at the other end of the coil; a plurality of first positioning members, the first positioning members are arranged at intervals on the side surface of the main mounting plate facing the secondary mounting plate, the first positioning members are arranged at intervals on the side surface of the secondary mounting plate facing the main mounting plate, and the first positioning members at least partially contact the coil.

[0013] In some embodiments, the magnetic core comprises: two main plates, the two main plates are arranged at two ends of the coil; a connecting core, one end of the connecting core is connected to one main plate, and the other end of the connecting core is connected to the other main plate, and the coil is sleeved on the outer side of the connecting core; and a plurality of second positioning members, the second positioning members are arranged at intervals on the side surface of the main mounting plate away from the secondary mounting plate, the second positioning members are arranged at intervals on the side surface of the secondary mounting plate away from the main mounting plate, and the second positioning members at least partially contact the main plates.

[0014] In some embodiments, the first positioning member and the second positioning member each comprise:

[0015] a flat portion, one end of the flat portion is connected to the main mounting plate or the secondary mounting plate;

[0016] a positioning portion, the other end of the flat portion is connected to the positioning portion, and an included angle is formed between the flat portion and the positioning portion.

[0017] In some embodiments, it also includes:

[0018] The coil is provided with a bending section, and the bending section extends out of the mounting cavity;

[0019] The connector has a portion of the main mounting plate extending out of the mounting cavity. The portion of the main mounting plate extending out of the mounting cavity is provided with a connector, and the connector is provided with positioning holes for the bending part to pass through.

[0020] A first connecting hole is provided near the end of the bent portion;

[0021] The second connecting hole is provided on the connector and is adapted to the first connecting hole.

[0022] In some embodiments, the housing is provided with a through hole.

[0023] This application proposes a high-power water-cooled inductor. It includes a housing, a magnetic core, a coil, a water-cooling plate, and thermally conductive adhesive. The housing has a mounting cavity with one open end. The magnetic core is disposed within the housing and located inside the mounting cavity. The coil is fitted onto the outside of the magnetic core and located within the mounting cavity. The water-cooling plate is disposed on one side of the housing. The mounting cavity is filled with thermally conductive adhesive. During inductor operation, the coil continuously generates heat due to its internal resistance. The heat generated by the coil is transferred to the housing via the thermally conductive adhesive, and then to the water-cooling plate. Cooling water flows through the water-cooling plate, and heat exchange occurs between the cooling water and the water-cooling plate, carrying away the heat generated by the coil and maintaining the operating temperature of the high-power water-cooled inductor. Water cooling provides high heat dissipation efficiency, and the increase in volume due to the water-cooling plate is small, which is beneficial for the compact structural design of the high-power water-cooled inductor. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a high-power water-cooled inductor according to an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of a high-power water-cooled inductor structure with thermally conductive adhesive removed according to an embodiment of this application;

[0027] Figure 3 This is a cross-sectional view of a high-power water-cooled inductor with thermally conductive adhesive removed according to an embodiment of this application;

[0028] Figure 4This is a schematic diagram of the structure of a coil according to an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of the main mounting plate and the sub-mounting plate according to an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the structure of a magnetic core according to an embodiment of this application;

[0031] Figure 7 This is a schematic diagram of the outer casing of an embodiment of this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0035] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0036] See Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, this application proposes a high-power water-cooled inductor, comprising: a housing 1, with a mounting cavity 14 having an opening at one end inside the housing 1; a magnetic core, disposed on the housing 1 and located within the mounting cavity 14; a coil 22, fitted around the outside of the magnetic core and located within the mounting cavity 14; a water-cooling plate 13, disposed on one side of the housing 1; and thermally conductive adhesive 4, filling the mounting cavity 14.

[0037] The outer casing 1 forms the structural basis of the high-power water-cooled inductor. The coil 22, magnetic core, and thermally conductive adhesive 4 are all housed within the outer casing 1. The coil 22 and magnetic core constitute the inductor structure, which is installed within the mounting cavity 14. The water-cooling plate 13 is the core component of the high-power water-cooled inductor. It is located on one side of the outer casing 1 and is preferably integrally formed with the outer casing 1. That is, a portion of the outer casing 1 can be processed into the water-cooling plate 13, ensuring heat dissipation efficiency while reducing the volume increase caused by the installation of the water-cooling plate 13. The thermally conductive adhesive 4 serves to fix the magnetic core, coil 22, and other structures. It also transfers heat, transferring the heat from the coil 22 to the outer casing 1 and dissipating it from the water-cooling plate 13. The thermally conductive adhesive 4 is poured into the mounting cavity 14 from the open end of the mounting cavity 14.

[0038] Specifically, during the operation of the inductor, the coil 22 continuously generates heat due to its internal resistance. This heat is transferred to the outer casing 1 via the thermally conductive adhesive 4, and then to the water-cooling plate 13. Cooling water flows through the water-cooling plate 13, exchanging heat with it and carrying away the heat generated by the coil 22, thus maintaining the operating temperature of the high-power water-cooled inductor. Water cooling provides high heat dissipation efficiency, and the increase in size due to the water-cooling plate 13 is small, which is beneficial for the compact structural design of high-power water-cooled inductors.

[0039] The outer casing 1 is made of ADC12 material. It has high fluidity and castability, making it suitable for the production of various aluminum alloy die-cast parts. Furthermore, it possesses excellent mechanical properties and corrosion resistance, which is beneficial for high-power water-cooled inductors to adapt to diverse and harsh environmental conditions.

[0040] Among them, the thermally conductive adhesive 4 can be silicone thermally conductive adhesive 4, epoxy resin AB adhesive, acrylic thermally conductive adhesive 4, or polyurethane thermally conductive adhesive 4, etc. All of the above-mentioned thermally conductive adhesives 4 are widely used in the electronics industry. After solidification, they can have excellent heat dissipation and mechanical properties, which facilitates the fixing of structures such as coil 22 and magnetic core, and can effectively conduct the heat generated by coil 22.

[0041] See Figure 1 and Figure 2As shown, in some embodiments, it further includes: multiple heat dissipation protrusions 11, which are used to increase the contact area between the outer shell 1 and the thermally conductive adhesive 4, facilitating the transfer of heat from the thermally conductive adhesive 4 to the outer shell 1. The multiple heat dissipation protrusions 11 are spaced apart on the inner wall surface of the outer shell 1 near the water-cooling plate 13, and the multiple heat dissipation protrusions 11 are located in the mounting cavity 14. That is, the heat dissipation protrusions 11 and the water-cooling plate 13 are respectively located on the inner and outer wall surfaces of one side of the outer shell 1. After heat is conducted to the heat dissipation protrusions 11, it can be quickly transferred to the water-cooling plate 13, reducing the heat transfer path and improving heat dissipation efficiency.

[0042] In this embodiment, the heat dissipation protrusion 11 is used to increase the contact area between the outer shell 1 and the thermally conductive adhesive 4. The cross-section of the heat dissipation protrusion 11 can be any one of rectangle, triangle, arc or trapezoid, which is convenient for casting and can effectively increase the contact area between the outer shell 1 and the thermally conductive adhesive 4.

[0043] See Figure 2 and Figure 3 As shown, in some embodiments, it further includes an insulating heat-conducting element 6, which is disposed between the coil 22 and the outer casing 1, and is located within the mounting cavity 14. The insulating heat-conducting element 6 is used to improve the heat conduction efficiency. Since the heat transfer efficiency of the insulating heat-conducting element 6 is better than that of the thermally conductive adhesive 4, by providing the insulating heat-conducting element 6 between the coil 22 and the outer casing 1, the heat generated on the coil 22 can be more easily transferred to the outer casing 1.

[0044] In this embodiment, the insulating heat-conducting element 6 is preferably made of ceramic material. Ceramic material has good thermal conductivity and insulation properties, which can safely improve the heat conduction efficiency between the coil 22 and the outer shell 1. Preferably, any gap between the coil 22 and the outer shell 1 can be filled with the insulating heat-conducting element 6 to fully improve the heat conduction efficiency between the coil 22 and the outer shell 1.

[0045] See Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, in some embodiments, the device further includes: a main mounting plate 32 disposed at one end of the coil 22; and a secondary mounting plate 34 disposed at the other end of the coil 22. The main mounting plate 32 and the secondary mounting plate 34 form a mounting structure for better fixing the position of the coil 22 and preventing the coil 22 from being unfixed in the housing 1. A plurality of first positioning members 36 are provided, spaced apart on the side of the main mounting plate 32 facing the secondary mounting plate 34, and spaced apart on the side of the secondary mounting plate 34 facing the main mounting plate 32. The first positioning members 36 at least partially contact the coil 22. The first positioning members 36 on the main mounting plate 32 or the sub-mounting plate 34 are arranged at intervals along the outer contour line of the coil 22 projected on the main mounting plate 32 or the sub-mounting plate 34. That is, the first positioning members 36 form a clear mounting position around the main mounting plate 32 and the sub-mounting plate 34, and one end of the coil 22 is placed therein. By setting the first positioning members 36, the position of the coil 22 relative to the main mounting plate 32 and the sub-mounting plate 34 is fixed, thereby facilitating the fixing of the position of the coil 22 in the mounting cavity 14 of the housing 1.

[0046] See Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments, the magnetic core includes: two main boards 51, which are respectively disposed at both ends of the coil 22; a connecting core 52, one end of which is connected to one main board 51 and the other end of which is connected to the other main board 51. The main board 51 and the connecting core 52 are connected together by adhesive. Through the above magnetic core structure design, it is beneficial to increase the magnetic flux area of ​​the magnetic core, further improve the performance of the magnetic core, and enable the magnetic core to better match the working efficiency of the whole machine. The coil 22 is fitted on the outside of the connecting core 52; a plurality of second positioning members 35, the second positioning members 35 are spaced apart on the side of the main mounting plate 32 away from the secondary mounting plate 34, and the second positioning members 35 are spaced apart on the side of the secondary mounting plate 34 away from the main mounting plate 32. The second positioning members 35 at least partially contact the main board 51. The second positioning member 35 forms a clear mounting position around both the main mounting plate 32 and the sub-mounting plate 34. The two main boards 51 are respectively located on the main mounting plate 32 and the sub-mounting plate 34. By setting the second positioning member, the position of the main board 51 relative to the main mounting plate 32 and the sub-mounting plate 34 is fixed, thereby facilitating the fixing of the position of the main board 51 in the mounting cavity 14 of the housing 1.

[0047] In this embodiment, the main board 51, the main mounting plate 32, the coil 22, the secondary mounting plate 34 and the main board 51 are sequentially installed in the mounting cavity 14 of the housing 1. One side of the main board 51 abuts against the inner wall of the housing 1, and the other side of the main board 51 abuts against the heat dissipation protrusion 11, thereby firmly installing the above structure into the housing, which is beneficial to the compact structural design of high-power water-cooled inductors.

[0048] See Figure 5 As shown, in some embodiments, both the first positioning member 36 and the second positioning member 35 include: a straight portion, one end of which is connected to the main mounting plate 32 or the secondary mounting plate 34; and a positioning portion, the other end of which is connected to the straight portion, with an angle formed between the positioning portion and the straight portion. The positioning portion and the straight portion form an L-shaped snap-fit, which is used to better form the installation position and facilitate the fixing of the coil 22 or the main board 51. Preferably, the angle between the positioning portion and the straight portion is 90°.

[0049] See Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, it further includes: a bending portion 21, the coil 22 is provided with a bending portion 21, the bending portion 21 partially extends out of the mounting cavity 14; there are two bending portions 21, the bending portions 21 are the leads of the coil 22, used to conduct current into the coil 22. A connector 31, the main mounting plate 32 partially extends out of the mounting cavity 14, the part of the main mounting plate 32 extending out of the mounting cavity 14 is provided with a connector 31, the connector 31 is provided with a positioning hole for the bending portion 21 to pass through; the connector 31 is used to fix the position of the bending portion 21, after the lead of the coil 22 passes through the positioning hole, the part passing through the positioning hole is bent, thereby forming the bending portion 21. A first connecting hole 23 is provided near the end of the bending portion 21; a second connecting hole 33 is provided on the connector 31, the second connecting hole 33 is adapted to the first connecting hole 23. The first connecting hole 23 and the second connecting hole 33 are used to introduce external power. Specifically, the access contact of the external wire is set between the first connecting hole 23 and the second connecting hole 33. The second connecting hole 33 is then connected to the first connecting hole 23 by bolts, so that the access contact can fully contact the bent part 21, which facilitates the introduction of external current.

[0050] See Figure 1 As shown, in some embodiments, the housing 1 is provided with a through hole 12, and the housing 1 is fixed to the external component through the through hole 12 and fasteners to achieve overall fixation of the high-power water-cooled inductor. The fasteners are preferably screws.

[0051] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A high-power water-cooled inductor, characterized in that, include: The outer casing (1) has an installation cavity (14) with an opening at one end. A magnetic core is disposed in the housing (1) and located within the mounting cavity (14); A coil (22) is fitted onto the outside of the magnetic core and is located inside the mounting cavity (14); A water-cooled plate (13) is disposed on one side of the outer casing (1); Thermally conductive adhesive (4) is used to fill the mounting cavity (14). Multiple heat dissipation protrusions (11) are spaced apart on the inner wall surface of the outer shell (1) near the water-cooled plate (13) and the multiple heat dissipation protrusions (11) are located in the mounting cavity (14).

2. The high-power water-cooled inductor according to claim 1, characterized in that, Also includes: An insulating heat-conducting component (6) is disposed between the coil (22) and the outer shell (1), and the insulating heat-conducting component (6) is located in the mounting cavity (14).

3. The high-power water-cooled inductor according to claim 1, characterized in that, Also includes: A main mounting plate (32) is disposed at one end of the coil (22); A secondary mounting plate (34) is disposed at the other end of the coil (22); Multiple first positioning elements (36) are provided on the side of the main mounting plate (32) facing the sub-mounting plate (34) at intervals, and on the side of the sub-mounting plate (34) facing the main mounting plate (32) at intervals, and the first positioning elements (36) at least partially contact the coil (22).

4. The high-power water-cooled inductor according to claim 3, characterized in that, The magnetic core includes: Two main boards (51) are respectively located at both ends of the coil (22); A connecting core (52) is provided, one end of which is connected to a main board (51), and the other end of which is connected to another main board (51). The coil (22) is fitted around the outside of the connecting core (52). Multiple second positioning elements (35) are provided on the side of the main mounting plate (32) away from the sub-mounting plate (34) at intervals, and on the side of the sub-mounting plate (34) away from the main mounting plate (32) at intervals, and the second positioning elements (35) at least partially contact the main board (51).

5. The high-power water-cooled inductor according to claim 4, characterized in that, Both the first positioning element (36) and the second positioning element (35) include: A straight section, one end of which is connected to the main mounting plate (32) or the sub-mounting plate (34). The positioning part is connected to the other end of the straight part, and an angle is formed between the positioning part and the straight part.

6. The high-power water-cooled inductor according to claim 3, characterized in that, Also includes: The coil (22) is provided with a bending portion (21), and the bending portion (21) extends out of the mounting cavity (14). The connector (31) is provided on the part of the main mounting plate (32) that extends out of the mounting cavity (14). The connector (31) is provided on the part of the main mounting plate (32) that extends out of the mounting cavity (14). The connector (31) is provided with a positioning hole for the bending part (21) to pass through. The first connecting hole (23) is provided near the end of the bent portion (21); The second connecting hole (33) is disposed on the connector (31) and is adapted to the first connecting hole (23).

7. The high-power water-cooled inductor according to claim 1, characterized in that, The outer casing (1) is provided with a through hole (12).

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