A wire-wound inductor

Abstract

The application provides a wire-wound inductor, which is composed of a first partition plate, a second partition plate and a third partition plate. One end of the three partition plates converges at a fixed point, and the other end is fixed on a core body at equal intervals, so as to accurately divide the core body into three independent winding parts. This design not only significantly reduces the eddy current loss inside the core body, reduces the heat generation from the source, but more importantly, it effectively blocks the direct conduction path of heat between the winding parts through physical isolation, avoids the excessive accumulation of heat in the local area, and provides a strong guarantee for the stable operation of the inductor.

Description

Technical Field

[0001] This application relates to the field of inductors, and more particularly to a wire-wound inductor. Background Technology

[0002] With the rapid development of electronic technology, the performance requirements for inductors are also increasing. Especially in high-frequency and high-current applications, the heat generation problem of inductors has become one of the key factors restricting their performance improvement.

[0003] Eddy current loss is one of the main causes of inductor heating. When alternating current passes through the coil winding, it generates an alternating magnetic field in the core, which in turn induces eddy currents inside the core, causing energy to dissipate in the form of heat.

[0004] Therefore, there is a need for a wire-wound inductor that reduces heat buildup. Utility Model Content

[0005] In view of this, it is necessary to provide a wire-wound inductor that reduces heat accumulation in order to solve the above problems.

[0006] Embodiments of this application provide a wire-wound inductor, comprising:

[0007] Core;

[0008] The partition assembly includes a first partition plate, a second partition plate, and a third partition plate. One end of the first partition plate, the second partition plate, and the third partition plate intersect to form a fixed point, and the other end is equally spaced on the core body to divide the core body equally into a first winding portion, a second winding portion, and a third winding portion.

[0009] A coil winding is sleeved on at least one of the first winding portion, the second winding portion, or the third winding portion.

[0010] In at least one embodiment of this application, the coil winding has a first coil, a second coil and a third coil, the first coil, the second coil and the third coil being sequentially sleeved on the first winding portion, the second winding portion and the third winding portion, and any two adjacent coils are spaced apart.

[0011] In at least one embodiment of this application, the inductor includes a mounting plate disposed opposite to the core, and the partition assembly is disposed on the mounting plate.

[0012] In at least one embodiment of this application, the first partition plate has a partition portion and a limiting portion, one side of the partition portion is disposed on the mounting plate, the limiting portion is located on the side of the partition portion away from the mounting plate, and the limiting portion abuts against the core.

[0013] In at least one embodiment of this application, the core has a first abutting surface and a second abutting surface, the first abutting surface and the second abutting surface are arranged perpendicularly to each other, the first abutting surface is located inside the core, and the second abutting surface is on the side opposite to the mounting plate;

[0014] The first abutting surface abuts against the partition portion, and the second abutting surface abuts against the limiting portion.

[0015] In at least one embodiment of this application, the mounting plate has an extension and a mounting portion, the mounting portion being directly opposite to and spaced apart from the core, the extension being formed along the extension direction of the mounting plate surface, wherein the fixing point is located at the center point of the mounting plate.

[0016] In at least one embodiment of this application, the extension portion is provided with a first limiting port, the mounting portion is provided with a second limiting port, one end of the first coil passes through the first limiting port, and the other end passes through the second limiting port.

[0017] In at least one embodiment of this application, the core is a circular structure.

[0018] In at least one embodiment of this application, a ventilation hole is provided on the mounting part, and the ventilation hole is arranged opposite to the coil winding so that the coil winding is disposed on the ventilation hole.

[0019] In at least one embodiment of this application, the first partition plate, the second partition plate, and the third partition plate have the same structure.

[0020] The aforementioned wire-wound inductor is designed with three partition plates: a first partition plate, a second partition plate, and a third partition plate. These three partition plates converge at one end at a fixed point, and their other ends are evenly spaced and fixed to the core, thus precisely dividing the core into three independent winding sections. This design not only significantly reduces eddy current losses within the core, minimizing heat generation at the source, but more importantly, it effectively blocks direct heat conduction between the winding sections through physical isolation, preventing excessive heat accumulation in localized areas and providing strong assurance for the stable operation of the inductor. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a wire-wound inductor.

[0022] Figure 2 This is an exploded structural diagram of a wire-wound inductor.

[0023] Figure 3 This is a schematic diagram showing the exploded structure of the coil winding and core.

[0024] Explanation of main component symbols

[0025] 100. A wound inductor; 10. Core; 10a. First contact surface; 10b. Second contact surface; 11. First winding portion; 12. Second winding portion; 13. Third winding portion; 20. Partition assembly; 21. First partition plate; 211. Partition portion; 212. Limiting portion; 22. Second partition plate; 23. Third partition plate; 24. Fixing point; 30. Coil winding; 31. First coil; 32. Second coil; 33. Third coil; 40. Mounting plate; 41. Extension portion; 411. First limiting port; 42. Mounting portion; 421. Second limiting port; 422. Ventilation hole. Detailed Implementation

[0026] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0027] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0028] Embodiments of this application provide a wire-wound inductor, comprising:

[0029] Core;

[0030] The partition assembly includes a first partition plate, a second partition plate, and a third partition plate. One end of the first partition plate, the second partition plate, and the third partition plate intersect to form a fixed point, and the other end is equally spaced on the core body to divide the core body equally into a first winding portion, a second winding portion, and a third winding portion.

[0031] A coil winding is sleeved on at least one of the first winding portion, the second winding portion, or the third winding portion.

[0032] The aforementioned wire-wound inductor is designed with three partition plates: a first partition plate, a second partition plate, and a third partition plate. These three partition plates converge at one end at a fixed point, and their other ends are evenly spaced and fixed to the core, thus precisely dividing the core into three independent winding sections. This design not only significantly reduces eddy current losses within the core, minimizing heat generation at the source, but more importantly, it effectively blocks direct heat conduction between the winding sections through physical isolation, preventing excessive heat accumulation in localized areas and providing strong assurance for the stable operation of the inductor.

[0033] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] according to Figures 1-3 This application provides a wire-wound inductor 100, including: a core 10, an isolation assembly 20, and a coil winding 30.

[0035] The partition assembly 20 includes a first partition plate 21, a second partition plate 22, and a third partition plate 23. One end of the first partition plate 21, the second partition plate 22, and the third partition plate 23 intersect to form a fixed point 24, and the other end is equally spaced on the core 10 to divide the core 10 into a first winding portion 11, a second winding portion 12, and a third winding portion 13. The coil winding 30 is sleeved on at least one of the first winding portion 11, the second winding portion 12, or the third winding portion 13.

[0036] Specifically, the core 10 is the core basic component of the wire-wound inductor, providing support for the coil winding 30 and serving as the main path carrier of the magnetic field. When alternating current passes through the coil winding 30, it generates an alternating magnetic field in the core 10, thereby realizing the inductance function of the inductor.

[0037] Furthermore, the equally spaced core 10 can limit the flow range of eddy currents within the core 10, reducing eddy current formation and energy loss, thereby reducing inductor heating and improving the performance and stability of the inductor in high-frequency, high-current applications. The coil winding 30 is a coil wound on the core 10, and the coil is wound on at least one of the first winding portion 11, the second winding portion 12, or the third winding portion 13. When alternating current passes through the coil winding 30, an alternating magnetic field is generated, thus realizing the function of the inductor. During continuous operation, the isolation component 20 always plays a role in limiting eddy currents, ensuring stable operation of the inductor in high-frequency, high-current applications, reducing heat accumulation, and improving the performance and reliability of the inductor.

[0038] Furthermore, when three partition plates are equally spaced on the core 10, dividing it into a first winding section 11, a second winding section 12, and a third winding section 13, the propagation of the magnetic field within the core 10 is restricted by the partition plates. Each winding section corresponds to a relatively independent magnetic field environment within the core 10, with the magnetic field mainly concentrated within its corresponding region, reducing excessive diffusion to other areas. Under the influence of the alternating magnetic field, eddy currents are generated inside the core 10. These eddy currents are formed because the alternating magnetic field induces an electromotive force within the core 10, which in turn drives free electrons to form closed current loops within the core 10. Without the partition plates, eddy currents can form continuous, large-scale loops throughout the core 10. However, the placement of the three partition plates disrupts this continuity, acting as "barriers" to block the free flow of eddy currents within the core 10. Eddy currents can only form relatively small closed loops within the core 10 corresponding to each winding section, and can no longer form large-scale continuous eddy currents throughout the entire core 10 as before. Because the eddy currents are confined to the core 10 region corresponding to each winding section, their flow path is greatly shortened. According to Joule's law, the heat generated by eddy currents is proportional to the square of the current, the resistance, and the time, and the resistance is proportional to the length of the conductor. A shorter eddy current path means reduced resistance; under the same current conditions, the heat generated by the eddy currents will also be reduced accordingly, thereby reducing the inductor's heating problem.

[0039] In one specific embodiment, the coil winding 30 has a first coil 31, a second coil 32 and a third coil 33, the first coil 31, the second coil 32 and the third coil 33 are sequentially sleeved on the first winding portion 11, the second winding portion 12 and the third winding portion 13, and any two adjacent coils are spaced apart.

[0040] Specifically, the gap can serve as a heat dissipation channel, which helps dissipate the heat generated by the coil and core 10. When the inductor is working, the coil and core 10 generate heat due to current flow and eddy current losses. The presence of the gap increases the space for air circulation, accelerates heat convection and dissipation, thereby reducing the temperature of the inductor and improving its reliability and service life.

[0041] In one specific embodiment, the inductor includes a mounting plate 40, which is disposed opposite to the core 10, and the partition assembly 20 is disposed on the mounting plate 40.

[0042] Specifically, the mounting plate 40 serves as the support platform for the entire inductor. The partition assembly 20 is fixed to the mounting plate 40 by welding or integral connection. The core 10 has an annular circular structure. The first partition plate 21, the second partition plate 22, and the third partition plate 23 of the partition assembly 20 are all of the same length, so that the core 10 can be clamped on the partition assembly 20 and spaced apart from the mounting plate 40 for winding the coil on the core 10. The channel formed between the core 10 and the mounting plate 40 with their opposite spacing facilitates heat dissipation inside the inductor and reduces heat accumulation inside the inductor.

[0043] In one specific embodiment, the first partition plate 21 has a partition portion 211 and a limiting portion 212. One side of the partition portion 211 is disposed on the mounting plate 40, and the limiting portion 212 is located on the side of the partition portion 211 away from the mounting plate 40, and the limiting portion 212 abuts against the core 10.

[0044] Specifically, the partition part 211 and the limiting part 212 are an integral connection structure. The partition part 211 is the connection part between the first partition plate 21 and the mounting plate 40. The partition part 211 divides the area inside the core 10. Together with the partition parts 211 on the second partition plate 22 and the third partition plate 23, it changes the distribution of the magnetic field and the path of eddy currents inside the core 10, reduces eddy current losses, and reduces the heat generation of the inductor during operation.

[0045] Furthermore, the limiting portion 212 is an extension 41 on the partition portion 211, so that the limiting portion 212 abuts against the core 10, thereby restricting the core 10 to a specific position, ensuring that the relative position between the core 10 and the partition assembly 20 is accurate, and dividing the core 10 into the required winding portion by the extended limiting portion 212.

[0046] It should be noted that the first partition plate 21, the second partition plate 22 and the third partition plate 23 have the same structure, and the structure of the second partition plate 22 and the third partition plate 23 will not be described in detail here.

[0047] In one specific embodiment, the core 10 has a first abutting surface 10a and a second abutting surface 10b, the first abutting surface 10a and the second abutting surface 10b are arranged perpendicularly to each other, the first abutting surface 10a is located on the inner side of the core 10, and the second abutting surface 10b is on the side opposite to the mounting plate 40; wherein, the first abutting surface 10a abuts against the partition portion 211, and the second abutting surface 10b abuts against the limiting portion 212.

[0048] Specifically, the first abutment surface 10a is located inside the core 10 and abuts against the partition portion 211, providing a precise positioning reference for the partition portion 211. The abutment between the first abutment surface 10a and the partition portion 211 increases the connection strength between the core 10 and the partition assembly 20, making the internal structure of the entire inductor more stable. This abutment method can effectively resist the vibration and stress generated by the inductor during operation, prevent the partition portion 211 from shifting on the core 10, and maintain the stability of the internal structure of the inductor.

[0049] Furthermore, the second abutment surface 10b further assists in the positioning and fixing of the core 10. The contact between the limiting part 212 and the second abutment surface 10b restricts the position of the core 10 from another direction, preventing the core 10 from moving or rotating within the plane of the mounting plate 40, thus ensuring the stability of the internal structure of the inductor.

[0050] In one specific embodiment, the mounting plate 40 has an extension 41 and a mounting portion 42, the mounting portion 42 being directly opposite to and spaced apart from the core 10, the extension 41 being formed along the extension direction of the mounting plate 40, wherein the fixing point 24 is located at the center point of the mounting plate 40.

[0051] Specifically, the mounting portion 42 is positioned opposite and spaced apart from the core 10, providing a clear reference position for the assembly of the entire inductor. The extension portion 41 is formed along the extension direction of the mounting plate 40, and the extension portion 41 can provide more connection and fixing points 24, facilitating the mounting of the inductor to a circuit board or other equipment.

[0052] Setting the fixing point 24 at the center of the mounting plate 40 allows for a more even distribution of external forces on the inductor during installation and operation, reducing structural deformation or damage caused by uneven stress. This helps maintain the stability of the inductor's internal structure and ensures stable output performance.

[0053] In one specific embodiment, the extension 41 has a first limiting port 411, the mounting part 42 has a second limiting port 421, one end of the first coil 31 passes through the first limiting port 411, and the other end passes through the second limiting port 421.

[0054] Specifically, the separately set first limiting port 411 and second limiting port 421 provide a clear through path, which can guide one end of the first coil 31 to enter from the side of the extension 41 and the other end of the first coil 31 to enter from the second limiting port 421, ensuring that the coil's orientation inside the inductor meets the design requirements, avoiding coil tangling, confusion, etc., and ensuring the neatness and standardization of coil winding.

[0055] In one specific embodiment, the mounting part 42 is provided with a ventilation hole 422, and the ventilation hole 422 is arranged opposite to the coil winding 30 so that the coil winding 30 is disposed on the ventilation hole 422.

[0056] Specifically, during inductor operation, the coil winding 30 generates heat due to the current flowing through it. The presence of the ventilation hole 422 allows air to circulate around the coil winding 30, accelerating heat dissipation and effectively reducing the temperature of the coil winding 30. The ventilation hole 422 is directly aligned with the coil winding 30, the main heat source, ensuring that heat is dissipated most effectively. The heat generated by the coil winding 30 can be quickly transferred to the surrounding environment through the ventilation hole 422, preventing heat accumulation inside the inductor.

[0057] Therefore, the aforementioned wire-wound inductor 100, through its design consisting of a first partition plate 21, a second partition plate 22, and a third partition plate 23, with one end of each partition plate converging at a fixed point 24 and the other end equally spaced on the core 10, precisely divides the core 10 into three independent winding sections. This design not only significantly reduces eddy current losses within the core 10, reducing heat generation at its source, but more importantly, it effectively blocks the direct conduction path of heat between the winding sections through physical isolation, preventing excessive heat accumulation in localized areas and providing strong assurance for the stable operation of the inductor.

[0058] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A wire-wound inductor, characterized by, include: Core; The partition assembly includes a first partition plate, a second partition plate, and a third partition plate. One end of the first partition plate, the second partition plate, and the third partition plate intersect to form a fixed point, and the other end is equally spaced on the core body to divide the core body equally into a first winding portion, a second winding portion, and a third winding portion. A coil winding is sleeved on at least one of the first winding portion, the second winding portion, or the third winding portion.

2. An air-core inductor as claimed in claim 1, wherein The coil winding has a first coil, a second coil and a third coil, which are sequentially sleeved on the first winding portion, the second winding portion and the third winding portion, and are spaced apart from any two adjacent coils.

3. An air-core inductor according to claim 2, wherein The inductor includes a mounting plate, which is positioned opposite to the core, and the partition assembly is disposed on the mounting plate.

4. An air-core inductor as claimed in claim 3, wherein The first partition plate has a partition portion and a limiting portion. One side of the partition portion is disposed on the mounting plate, and the limiting portion is located on the side of the partition portion away from the mounting plate, and the limiting portion abuts against the core.

5. An air-core inductor as claimed in claim 4, wherein The core has a first abutting surface and a second abutting surface, the first abutting surface and the second abutting surface are arranged perpendicularly to each other, the first abutting surface is located on the inner side of the core, and the second abutting surface is on the side away from the mounting plate; The first abutting surface abuts against the partition portion, and the second abutting surface abuts against the limiting portion.

6. An air-core inductor as claimed in claim 3, wherein The mounting plate has an extension and a mounting portion. The mounting portion is opposite to and spaced apart from the core. The extension is formed along the extension direction of the mounting plate surface. The fixing point is located at the center point of the mounting plate.

7. An air-core inductor according to claim 6, wherein The extension portion has a first limiting port, and the mounting portion has a second limiting port. One end of the first coil passes through the first limiting port, and the other end passes through the second limiting port.

8. A wire-wound inductor according to claim 1, characterized in that, The core has a circular structure.

9. An air-core inductor according to claim 6, wherein The mounting part is provided with a ventilation hole, which is positioned opposite the coil winding so that the coil winding is mounted on the ventilation hole.

10. An air-core inductor as claimed in claim 1, wherein The first partition plate, the second partition plate, and the third partition plate have the same structure.

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