Inductor applied to power module and power module

Abstract

The utility model relates to power module technical field, concretely is a kind of inductance and power module applied to power module, including two cover plates, the bottom surface of cover plate is fixed with magnetic core, the outside of a cover plate is fixedly connected with base, two the magnetic core between sleeve joint is fixed with flat coil, the inductance overall outside of two cover plates, flat coil is sleeve joint with shield cover, the both sides of shield cover are fixed with connecting lug, power module includes circuit board.In the utility model, by installing one shield cover in the two flat wire inductances of collaborative work, shield cover can block two flat wire inductances between magnetic field coupling, the inner top of shield cover is crimped in flat wire inductance top, multiple positioning columns in shield cover interior can be distributed in the four around of flat wire inductance, realize in the positioning installation shield cover, and flat wire inductance is fixed by the aid of shield cover combination, help to improve the convenience of flat wire inductance combination installation.

Description

Technical Field

[0001] This utility model relates to the field of power module technology, specifically an inductor and power module applied to a power module. Background Technology

[0002] Flat wire inductors are typically installed on the circuit boards of switching power supply modules to store energy, filter, smooth current, and protect circuits. Commonly used flat wire inductors mainly consist of two magnetic cores mounted together, with a coil installed between the two magnetic cores. One of the magnetic cores has a base installed at its bottom. When installing the flat wire inductor on the circuit board, adhesive is used to first clamp and fix the coil between the two magnetic cores, then the magnetic cores are glued and fixed to the base, and finally the base is aligned and soldered to the circuit board. When a power module needs to supply power to multiple circuits such as digital and analog circuits separately, two flat-wire inductors are usually installed to filter or store energy separately, thereby shortening the loop path and achieving multi-channel voltage regulation. However, the alternating magnetic fields generated by the two flat-wire inductors will couple with each other. Most of the two flat-wire inductors installed together lack a structure to isolate magnetic field interference, which can easily lead to inductance deviation and even cause circuit oscillation. Furthermore, although the flat-wire inductors on traditional power supply circuit boards can achieve power conversion and differential mode filtering, they are not easy to suppress common-mode noise. Utility Model Content

[0003] The purpose of this invention is to provide an inductor and a power module for use in power modules, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An inductor used in a power supply module, comprising: Two cover plates, with a magnetic core fixedly connected to the bottom surface of each cover plate, and a base fixedly connected to the outer side of one cover plate; A flat coil, fitted between two magnetic cores, can withstand a large current, thereby improving the power handling capacity of the power supply. A shielding cover is fitted onto the outside of two cover plates to block magnetic field coupling between inductors and maintain stable inductor parameters. Connecting ears are fixedly connected to both sides of the shielding cover. Two mounting components are arranged on the outside of the shielding cover, which can both combine and fix the two shielding covers, and also allow the shielding covers to be fitted and fixed on the outside of the cover plate. The mounting components include a sleeve, and both ends of the sleeve are screwed to a shaft. The shaft is movably engaged with a connecting ear. An actuating block that abuts against the connecting ear is fixedly connected to the outside of the shaft.

[0005] Furthermore, the bottom surface of the cover plate is provided with an annular groove, the flat coil is arranged inside the annular groove, and the magnetic core is fixed in the middle position of the bottom surface of the cover plate.

[0006] Furthermore, the inner top surface of the shielding cover is fixed with a plurality of positioning posts, which are arranged against the periphery of the cover plate.

[0007] Furthermore, the top of the connecting ear has a notch, and the shaft of the notch is movably engaged.

[0008] A power module includes a circuit board with multiple L-shaped plates fixedly connected to the top surface of the circuit board. A positioning seat is fixed to the outer side of the L-shaped plates, and an L-shaped block is fixedly connected to the inner side of the L-shaped plates. A common-mode inductor is electrically connected to the top surface of the circuit board.

[0009] Furthermore, the inner side of the L-shaped plate is abutted against the corner of the shielding cover, and the inner side of the L-shaped block is abutted against the base.

[0010] Furthermore, the flat coil has two pins electrically connected to its outer side, and the pins are electrically connected to the circuit board via a base, which is then soldered to the circuit board.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By attaching and fixing nickel-plated steel or copper shields to both inductors, which consist of a cover plate, flat coil, magnetic core, and base, the shields can block magnetic field coupling between the two flat wire inductors, maintain stable inductance parameters, and suppress radiated noise, reducing conducted and radiated electromagnetic interference. Furthermore, a common-mode inductor is installed on the power module's circuit board to suppress common-mode noise, i.e., in-phase interference between the live wire and the neutral wire to ground. By using both flat wire inductors and common-mode inductors simultaneously, noise in the power supply can be effectively filtered out, improving output quality, reducing voltage ripple and noise, and ensuring stable operation of the load equipment.

[0012] By fixing multiple L-shaped plates on the circuit board, and fixing L-shaped blocks on the inner side of the L-shaped plates, when installing the flat wire inductor, the two corners at one end of the base of the inductor can respectively abut against the inner side of the two L-shaped blocks at the corresponding positions, which facilitates the positioning and arrangement of the assembled flat wire inductor on the circuit board. Then, the shielding cover is fitted onto the outer side of the flat wire inductor, and the two corners at one end of the shielding cover limit the arrangement between the two L-shaped plates at the corresponding positions. At the same time, the multiple positioning posts inside the shielding cover abut against the periphery of the flat wire inductor cover plate, so that the shielding cover can limit and place the flat wire inductor on the circuit board. By attaching the shaft on the mounting assembly to the second connection of the shield, and then rotating the shaft to move it a certain distance from inside the sleeve, one end of the shaft is inserted into the positioning seat of the L-shaped plate, and the actuating block on the outside of the shaft abuts against one side of the connecting ear. This allows the two shields to limit and fix the two flat wire inductors to the circuit board. At this time, the inner top surface of the shield abuts against the top of the flat wire inductor. Multiple positioning posts inside the shield are arranged in different positions around the flat wire inductor, which enables the flat wire inductors to be assembled and installed directly without using adhesive to fix the two cover plates and the cover plates and the base. This helps to improve the convenience of assembling and installing the flat wire inductors onto the power module. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the circuit board, L-shaped plate, shielding cover, and mounting components in this utility model; Figure 3 This is a schematic diagram of the mounting components, L-shaped plate, and shielding cover structure in this utility model; Figure 4 This is a schematic diagram of the internal structure of the shielding cover in this utility model; Figure 5 This is a schematic diagram of the cover plate, magnetic core, flat coil, and base structure of this utility model.

[0014] In the diagram: 100, cover plate; 110, magnetic core; 111, base; 200, flat coil; 210, pin; 300, shield; 310, connecting ear; 311, notch; 320, positioning post; 400, mounting assembly; 410, sleeve; 420, shaft; 430, toggle block; 500, circuit board; 510, L-shaped plate; 511, positioning seat; 512, L-shaped block; 520, common mode inductor; 530, transformer; 540, thermistor; 550, capacitor. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1, please refer to Figure 1 - Figure 5In this embodiment of the present invention, an inductor and a power module are provided. The inductor includes two cover plates 100, a magnetic core 110 is fixed on the bottom surface of the cover plate 100, a base 111 is fixedly connected to the outer side of one cover plate 100, a flat coil 200 is sleeved and fixed between the two magnetic cores 110, and a shielding cover 300 is sleeved on the outside of the inductor consisting of the two cover plates 100 and the flat coil 200. Connecting ears 310 are fixed on both sides of the shielding cover 300. The power module includes a circuit board 500, and multiple L-shaped plates 510 and a common mode inductor 5 are fixed on the top surface of the circuit board 500. 20. The bottom limit of the shield 300 is fixed between two adjacent L-shaped plates 510. Two inductors are mounted on the surface of the circuit board 500. Each inductor body is fitted with a shield 300. Both sides of the shield 300 are fixedly connected with connecting ears 310. Two mounting components 400 are arranged between the two shields 300. The mounting components 400 include sleeves 410. Both ends of the sleeves 410 are screwed to shafts 420. The shafts 420 are movably engaged with the connecting ears 310. The outside of the shafts 420 is fixedly connected to a toggle block 430 that abuts against the connecting ears 310.

[0017] Specifically, by installing a shield 300 on each of the two cooperating flat wire inductors via mounting components 400, the shield 300 can block the magnetic field coupling between the two flat wire inductors, maintaining stable inductance parameters. The mounting components 400 can simultaneously install and fix the two shields 300 onto the power module, which helps improve the ease of installation of the shields 300. In addition, during the installation of the shields 300, the inner top surface of the shield 300 is pressed against the top of the flat wire inductor, and multiple positioning posts 320 inside the shield 300 can be distributed around the flat wire inductor. In conjunction with multiple L-shaped plates 510 and L-shaped blocks 512 on the power module circuit board 500, the positions of the flat wire inductor and the shield 300 are restricted. Thus, the flat wire inductor can be assembled and fixed by the shield 300 while positioning and installing the shield 300, eliminating the need to use adhesive to glue the cover plate 100 and base 111 on the flat wire inductor, which helps improve the ease of assembly and installation of the flat wire inductor.

[0018] like Figure 1 As shown, in this embodiment, a transformer 530, a thermistor 540, and a capacitor 550 are also installed and fixed on the circuit board 500 of the power module. The use of the above-mentioned multiple electronic components to achieve power transmission is a prior art. The working principle of the electronic components on the power module will not be described in detail.

[0019] like Figure 1 and 5As shown, in this embodiment, an annular groove is provided on the bottom surface of the cover plate 100, the flat coil 200 is arranged inside the annular groove, the magnetic core 110 is fixed in the middle position of the bottom surface of the cover plate 100, and two pins 210 are electrically connected to the outside of the flat coil 200. The pins 210 are electrically connected to the circuit board 500 through the base 111, and the base 111 is soldered to the circuit board 500. This part is the specific structure of the existing flat wire inductor. The specific working principle of the flat wire inductor will not be described in detail.

[0020] like Figure 3 As shown, in this embodiment, positioning posts 320 are fixed on the inner top surface of the shielding cover 300 near the four corners. After the shielding cover 300 is sleeved and installed on the outside of the flat wire inductor, the multiple positioning posts 320 are respectively arranged around the top cover plate 100 of the flat wire inductor, which helps to position and fix the assembled flat wire inductor with the help of the shielding cover 300.

[0021] like Figure 3 and Figure 4 As shown, in this embodiment, the top of the connecting ear 310 has a notch 311. When the mounting assembly 400 is needed to simultaneously mount and fix the two shields 300 on the circuit board 500, the shaft 420 is first snapped into the notch 311 of the connecting ear 310 from top to bottom. Then, an external wrench or other tool is used to screw the shaft 420 so that the shaft 420 is gradually screwed out of the sleeve 410, so that one end of the shaft 420 can be inserted into the positioning seat 511 of the L-shaped plate 510. At the same time, the actuating block 430 is fixed to one side of the connecting ear 310 as the shaft 420 moves.

[0022] In this embodiment, the actuating block 430 helps the entire shield 300 to be abutted and fixed between the two L-shaped plates 510 by abutting the connecting ear 310. At the same time, because one end of the shaft 420 is inserted into the positioning seat 511, the shield 300 cannot move upward, thus achieving simultaneous fixation of the shield 300 in the horizontal and vertical directions. Then, the flat wire inductor is indirectly fixed by using the shield 300.

[0023] like Figure 3 As shown, in this embodiment, the power module includes a circuit board 500. A plurality of L-shaped plates 510 are fixedly connected to the top surface of the circuit board 500. The L-shaped plates 510 can limit the installation position of the shield 300. A positioning seat 511 is fixed on the outer side of the L-shaped plate 510. The positioning seat 511 can be combined with the shaft 420 to fix the shield 300 in the vertical direction.

[0024] In this embodiment, an L-shaped block 512 is also fixedly connected to the inner side of the L-shaped plate 510. After the shielding cover 300 is sleeved and fixed on the outside of the flat wire inductor, the bottom surface of the shielding cover 300 is close to the top surface of the L-shaped block 512, and the outer side of one bottom end of the shielding cover 300 is close to the inner side of the L-shaped plate 510.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An inductor used in a power supply module, characterized in that, include: Two cover plates (100), with a magnetic core (110) fixedly connected to the bottom surface of the cover plate (100), and a base (111) fixedly connected to the outer side of one cover plate (100). A flat coil (200) is fitted between two magnetic cores (110) and can withstand a large current, thereby improving the power handling capacity of the power supply. The shield (300) is fitted onto the outside of the two cover plates (100) to block the magnetic field coupling between inductors and keep the inductor parameters stable. Both sides of the shield (300) are fixedly connected with connecting ears (310). Two mounting components (400) are arranged on the outside of the shield (300), which can both fix the two shields together and fix the shield (300) on the outside of the cover plate. The mounting component (400) includes a sleeve (410), and both ends of the sleeve (410) are screwed to a shaft (420). The shaft (420) is movably engaged with the connecting ear (310). A toggle block (430) that abuts against the connecting ear (310) is fixedly connected to the outside of the shaft (420).

2. The inductor applied to a power module according to claim 1, characterized in that, The bottom surface of the cover plate (100) is provided with an annular groove, the flat coil (200) is arranged inside the annular groove, and the magnetic core (110) is fixed in the middle position of the bottom surface of the cover plate (100).

3. The inductor applied to a power module according to claim 1, characterized in that, The inner top surface of the shield (300) is fixed with a plurality of positioning posts (320), which are arranged against the periphery of the cover plate (100).

4. The inductor applied to a power module according to claim 1, characterized in that, The top of the connecting ear (310) has a notch (311), and the notch (311) is movably engaged with the shaft (420).

5. A power supply module, employing the inductor described in any one of claims 1-4, characterized in that, The power module includes a circuit board (500), a plurality of L-shaped plates (510) are fixedly connected to the top surface of the circuit board (500), a positioning seat (511) is fixed to the outer side of the L-shaped plate (510), an L-shaped block (512) is fixedly connected to the inner side of the L-shaped plate (510), and a common mode inductor (520) is electrically connected to the top surface of the circuit board (500).

6. The power module according to claim 5, characterized in that, The inner side of the L-shaped plate (510) is close to the corner of the shield (300), the positioning seat (511) is movably inserted into the shaft (420), and the inner side of the L-shaped block (512) is close to the base (111).

7. The power module according to claim 5, characterized in that, The flat coil (200) has two pins (210) electrically connected to its outer side. The pins (210) are electrically connected to the circuit board (500) via a base (111). The base (111) is welded and fixed to the circuit board (500).

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