Inductor

Abstract

The invention relates to the technical field of electronic components, and discloses an inductor which comprises a body, an electrical assembly is fixedly bonded to the top of the body, a magnetic core is sleeved with the top of the body, a winding is sleeved with the inner wall of the magnetic core, and sealing pieces are bonded to the two sides of the top of the body in a sealed mode. The end portion of the winding is electrically connected with the electrical assembly. The framework, the internal cooling liquid micro-channel and the external heat dissipation fins are integrally formed through 3D printing, seamless combination of active heat dissipation and passive heat dissipation is achieved, the thermal resistance is greatly reduced, the heat dissipation performance is improved, the inductor can work under higher current without overheating due to the efficient heat dissipation capacity, and the service life of the inductor is prolonged. Meanwhile, due to the integrated structure, the assembly number and the size are reduced, the power density is remarkably improved, a plurality of inductor units can be conveniently connected in parallel or stacked through the standardized top assembly and the cooling interface, and the inductor array with the needed inductance value and the needed power level is rapidly constructed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic components, in particular to an inductor. BACKGROUND

[0002] With the continuous development of power electronics technology towards high power density, high efficiency and miniaturization, the heat dissipation problem of power inductors, as one of the core components, is increasingly prominent.

[0003] Traditional inductors are usually assembled by separate magnetic cores, windings, skeletons and external heat sinks, etc. Heat needs to be transmitted to the external heat sink through multiple layers of media such as skeletons, air gaps and adhesives, resulting in high thermal resistance and high internal temperature rise of the inductor. Traditional inductors are usually designed non-standardly, making it difficult to flexibly parallel or stack, and unable to conveniently build inductor arrays suitable for different power levels. SUMMARY

[0004] The present application provides an inductor, which solves the problems raised in the background art.

[0005] The present application provides the following technical scheme: an inductor, comprising a body, an electrical component is fixedly bonded to the top of the body, a magnetic core is sleeved in the top of the body, a winding is sleeved on the inner wall of the magnetic core, sealing members are sealingly bonded to the top of the body on both sides, and the end of the winding and the electrical component are electrically connected.

[0006] As a preferred technical scheme of the present application: the body comprises a frame body and a heat dissipation structure arranged on the frame body, cooling interfaces are formed on the top and bottom outer sides of the frame body, a magnetic core through hole is formed through the top of the frame body, a winding accommodating groove is formed in the top of the frame body, and a winding skeleton is fixedly assembled on the top of the winding accommodating groove.

[0007] As a preferred technical scheme of the present application: the heat dissipation structure comprises a cooling liquid micro-channel integrally formed in the inside of the frame body, which is used to guide the flow of cooling liquid to actively dissipate heat;

[0008] The heat dissipation structure further comprises heat dissipation fins integrally formed on the surface of the frame body, which are used for passive heat dissipation;

[0009] The body is integrally formed by additive manufacturing process from a metal material with high thermal conductivity or an insulating composite material with high thermal conductivity.

[0010] As a preferred technical scheme of the present application: the inductor further comprises left and right connecting members, upper and lower connecting members and parallel electrical connecting members connecting multiple inductors.

[0011] As a preferred technical solution of the present invention: the electrical component includes a connector, the top of the connector has a threaded hole, the inner wall of the threaded hole is fitted with a threaded rod, an external electrical connection terminal is welded to one side of the connector, an installation base is fixedly mounted on the bottom of the connector, and an internal electrical connection terminal is welded to the center of the bottom of the connector.

[0012] The external electrical connection terminal and the internal electrical connection terminal are electrically connected, the internal electrical connection terminal and the winding are electrically connected, and the connecting body is threadedly connected to the cooling interface via a threaded rod.

[0013] As a preferred embodiment of the present invention, the sealing element is disposed on both sides of the top of the winding and is sealed to the inner wall of the winding receiving groove and the outer wall of the magnetic core.

[0014] As a preferred technical solution of the present invention: the magnetic core includes a first magnetic core portion and a second magnetic core portion, the first magnetic core portion and the second magnetic core portion are respectively sleeved inside the body from the top and bottom of the body, and the adjacent ends of the first magnetic core portion and the second magnetic core portion are inserted into each other, and the winding is sleeved on the magnetic core column in the middle of the magnetic core.

[0015] As a preferred embodiment of the present invention: the winding includes a conductive coil and a hollow cooling pipe. The conductive coil is wound into a winding, and the hollow cooling pipe is disposed in the gap between adjacent conductive coils. The end of the conductive coil is electrically connected to an electrical component, and the end of the hollow cooling pipe is connected to a coolant microchannel inside the frame body.

[0016] The present invention has the following beneficial effects:

[0017] 1. This inductor integrates the frame, internal coolant microchannels, and external heat dissipation fins through 3D printing, achieving a seamless combination of active and passive heat dissipation. This significantly reduces thermal resistance and improves heat dissipation performance. The efficient heat dissipation capability allows the inductor to operate at higher currents without overheating. At the same time, the integrated structure reduces the number of components and volume, significantly improving power density. Through standardized top components and cooling interfaces, multiple inductor units can be easily connected in parallel or stacked to quickly construct inductor arrays with the required inductance and power rating. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the electrical component structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the main structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the sealing structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the winding frame structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the winding structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the left and right connecting parts of the present invention;

[0025] Figure 8 This is a schematic diagram of the parallel electrical connector structure of the present invention.

[0026] In the diagram: 1. Body; 2. Electrical components; 3. Seals; 4. Magnetic core; 5. Winding; 6. Left and right connectors; 7. Upper and lower connectors; 8. Parallel electrical connectors;

[0027] 41. First magnetic core section; 42. Second magnetic core section;

[0028] 51. Conductive coil; 52. Hollow cooling pipe;

[0029] 101. Frame body; 102. Heat dissipation fins; 103. Cooling interface; 104. Magnetic core through hole; 105. Winding receiving slot; 106. Winding skeleton;

[0030] 201. Connector; 202. Threaded hole; 203. Threaded rod; 204. External electrical connection terminal; 205. Mounting base; 206. Internal electrical connection terminal. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-8 An inductor includes a body 1, an electrical component 2 fixedly bonded to the top of the body 1, a magnetic core 4 sleeved inside the top of the body 1, a winding 5 sleeved on the inner wall of the magnetic core 4, sealing elements 3 sealed to both sides of the top of the body 1, and the ends of the winding 5 electrically connected to the electrical component 2.

[0033] In a preferred embodiment: the body 1 includes a frame body 101 and a heat dissipation structure disposed on the frame body 101. Cooling interfaces 103 are provided on the top and bottom outer sides of the frame body 101. A magnetic core through hole 104 is provided through the top of the frame body 101. A winding receiving groove 105 is provided on the top of the frame body 101. A winding skeleton 106 is fixedly assembled on the top of the winding receiving groove 105.

[0034] In a preferred embodiment: the heat dissipation structure includes a coolant microchannel integrally formed inside the frame body 101 entity, the coolant microchannel being used to guide the coolant flow through for active heat dissipation.

[0035] The heat dissipation structure also includes heat dissipation fins 102 integrally formed on the surface of the frame body 101 for passive heat dissipation;

[0036] The main body 1 is integrally formed from a metal material with high thermal conductivity or an insulating composite material with high thermal conductivity through an additive manufacturing process.

[0037] In the above structure, the main body 1 is integrally formed from a high thermal conductivity metal material or a high thermal conductivity insulating composite material through additive manufacturing process, so that the coolant microchannel and heat dissipation fin 102 are integrated. At the same time, through the reserved winding skeleton 106, the winding 5 can be sleeved on the outer edge of the winding skeleton 106, and through the reserved magnetic core through hole 104, the middle part of the magnetic core 4 can be sleeved on the inner wall of the winding 5, thereby achieving a high degree of integration of the equipment. By setting the cooling interface 103 and electrical components 2, several inductors can be connected. Through parallel connection or stacking, an inductor array with the required inductance value and power level can be quickly constructed, which greatly simplifies the system design and procurement process.

[0038] In a preferred embodiment, the inductor further includes left and right connecting members 6, upper and lower connecting members 7, and parallel electrical connecting members 8 for connecting multiple sets of inductors.

[0039] In a preferred embodiment: the electrical component 2 includes a connector 201, a threaded hole 202 is provided on the top of the connector 201, a threaded rod 203 is sleeved on the inner wall of the threaded hole 202, an external electrical connection terminal 204 is welded to one side of the connector 201, a mounting base 205 is fixedly mounted on the bottom of the connector 201, and an internal electrical connection terminal 206 is welded to the center of the bottom of the connector 201.

[0040] External electrical connection terminal 204 and internal electrical connection terminal 206 are electrically connected. Internal electrical connection terminal 206 is electrically connected to winding 5. Connector 201 is threadedly connected to cooling interface 103 via threaded rod 203.

[0041] In the above structure, the electrical component 2 and the main body 1 are initially fixed by adhesive bonding, and then connected by threaded rod 203 and cooling interface 103. When it is necessary to stack two or more sets of inductors, the upper and lower sets of main bodies 1 are connected and fixed by hollow upper and lower connectors 7, and the upper and lower sets of electrical components 2 are connected in parallel by parallel electrical connectors 8. The inductor is fixed to the main circuit board by setting the mounting base 205, and the inductor is electrically connected to the main circuit board by the internal electrical connection terminal 206.

[0042] When two or more sets of inductors are stacked side by side, the cooling interfaces 103 on adjacent sides of the two sets of inductors are connected by the left and right connectors 6, so that the inner cavities of the two sets of bodies 1 are connected, and the two sets of inductors are electrically connected to the main circuit board through their own electrical components 2.

[0043] In a preferred embodiment, the seal 3 is disposed on both sides of the top of the winding 5 and is sealed to the inner wall of the winding receiving groove 105 and the outer wall of the magnetic core 4.

[0044] The sealing element 3 is sealed to the inner wall of the winding receiving groove 105 and the outer wall of the magnetic core 4, so that the body 1 is sealed by the sealing element 3.

[0045] In a preferred embodiment, the magnetic core 4 includes a first magnetic core portion 41 and a second magnetic core portion 42. The first magnetic core portion 41 and the second magnetic core portion 42 are respectively sleeved inside the body 1 from the top and bottom, and the adjacent ends of the first magnetic core portion 41 and the second magnetic core portion 42 are inserted into each other. The winding 5 is sleeved on the magnetic core post in the middle of the magnetic core 4.

[0046] In a preferred embodiment: the winding 5 includes a conductive coil 51 and a hollow cooling pipe 52. The conductive coil 51 is wound into a winding, and the hollow cooling pipe 52 is disposed in the gap between adjacent conductive coils 51. The end of the conductive coil 51 is electrically connected to the electrical component 2, and the end of the hollow cooling pipe 52 is connected to the coolant microchannel inside the frame body 101.

[0047] Working principle: Through the cooling interface 103, an external circulating cooling device can be connected to enable the coolant in the microchannels inside the frame body 101 to circulate.

[0048] By setting up cooling interface 103 and electrical component 2, several inductors can be connected together. Through parallel connection or stacking, an inductor array with the required inductance value and power level can be quickly constructed, greatly simplifying the system design and procurement process.

[0049] Electrical component 2 and body 1 are initially fixed by adhesive bonding, and then connected by threaded rod 203 and cooling interface 103. When it is necessary to stack two or more sets of inductors, the upper and lower body 1 are connected and fixed by hollow upper and lower connectors 7, and the upper and lower electrical components 2 are connected in parallel by parallel electrical connectors 8. The inductor is fixed to the main circuit board by setting mounting base 205, and the inductor is electrically connected to the main circuit board by internal electrical connection terminal 206.

[0050] When two or more sets of inductors are stacked side by side, the cooling interfaces 103 on adjacent sides of the two sets of inductors are connected by the left and right connectors 6, so that the inner cavities of the two sets of bodies 1 are connected, and the two sets of inductors are electrically connected to the main circuit board through their own electrical components 2.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inductor, comprising a body (1), characterized in that: An electrical component (2) is fixedly bonded to the top of the body (1), a magnetic core (4) is sleeved inside the top of the body (1), a winding (5) is sleeved on the inner wall of the magnetic core (4), and sealing elements (3) are sealed and bonded to both sides of the top of the body (1). The end of the winding (5) is electrically connected to the electrical component (2).

2. An inductor according to claim 1, characterized in that: The main body (1) includes a frame body (101) and a heat dissipation structure disposed on the frame body (101). Cooling interfaces (103) are provided on the top and bottom outer sides of the frame body (101). A magnetic core through hole (104) is provided through the top of the frame body (101). A winding receiving groove (105) is provided on the top of the frame body (101). A winding skeleton (106) is fixedly assembled on the top of the winding receiving groove (105).

3. An inductor according to claim 2, characterized in that: The heat dissipation structure includes a coolant microchannel integrally formed inside the frame body (101) entity, which is used to guide the coolant to flow through for active heat dissipation. The heat dissipation structure also includes heat dissipation fins (102) integrally formed on the surface of the frame body (101) for passive heat dissipation; The body (1) is integrally formed from a high thermal conductivity metal material or a high thermal conductivity insulating composite material through an additive manufacturing process.

4. An inductor according to claim 1, characterized in that: The inductor also includes left and right connecting parts (6), upper and lower connecting parts (7), and parallel electrical connecting parts (8) for connecting multiple inductors.

5. An inductor according to claim 1, characterized in that: The electrical component (2) includes a connector (201), a threaded hole (202) is provided on the top of the connector (201), a threaded rod (203) is sleeved on the inner wall of the threaded hole (202), an external electrical connection terminal (204) is welded to one side of the connector (201), a mounting base (205) is fixedly assembled on the bottom of the connector (201), and an internal electrical connection terminal (206) is welded to the center of the bottom of the connector (201). The external electrical connection terminal (204) and the internal electrical connection terminal (206) are electrically connected, the internal electrical connection terminal (206) and the winding (5) are electrically connected, and the connector (201) is threadedly connected to the cooling interface (103) via a threaded rod (203).

6. An inductor according to claim 1, characterized in that: The sealing element (3) is disposed on both sides of the top of the winding (5) and is sealed to the inner wall of the winding receiving groove (105) and the outer wall of the magnetic core (4).

7. An inductor according to claim 1, characterized in that: The magnetic core (4) includes a first magnetic core portion (41) and a second magnetic core portion (42). The first magnetic core portion (41) and the second magnetic core portion (42) are respectively sleeved inside the body (1) from the top and bottom, and the adjacent ends of the first magnetic core portion (41) and the second magnetic core portion (42) are inserted into each other. The winding (5) is sleeved on the magnetic core post in the middle of the magnetic core (4).

8. An inductor according to claim 1, characterized in that: The winding (5) includes a conductive coil (51) and a hollow cooling pipe (52). The conductive coil (51) is wound into a winding, and the hollow cooling pipe (52) is disposed in the gap between adjacent conductive coils (51). The end of the conductive coil (51) is electrically connected to the electrical component (2), and the end of the hollow cooling pipe (52) is connected to the coolant microchannel inside the frame body (101).

Images