CN217486705U - Dustproof MOS tube structure for frequency converter - Google Patents

Abstract

The utility model discloses a dustproof MOS tube structure for a frequency converter, which comprises a plurality of MOS tube bodies, a dustproof cover, an aluminum-based PCB and a radiator; a plurality of MOS pipe bodies are all welded on an aluminum-based PCB board and are installed on a radiator through the aluminum-based PCB board, and a dustproof cover is installed on the aluminum-based PCB board and is a plurality of the MOS pipe bodies are arranged in the dustproof cover. The structure can ensure that the MOS tube is completely attached to the contact surface of the aluminum-based PCB, the heat dissipation is good, the volume of the radiator can be reduced, clamps are not needed, the number of screws is reduced, the cost is obviously reduced, dust prevention is realized, and the stability is improved.

Description

Dustproof MOS tube structure for frequency converter

Technical Field

The utility model belongs to the technical field of the converter, concretely relates to MOS tubular construction for converter.

Background

At present, the frequency converter has relatively large volume and high cost, and particularly, the IGBT module in the frequency converter has high price and large volume; at present, ceramic chips or insulating heat conducting films are required to be added under MOS tubes in the industrial industry in the market, a large radiator is required for cooling the MOS tubes, the MOS tubes are fixed by thermal interface materials, various supports and screws, MOS pins are not good in dust prevention, an insulating sleeve is required to be added between the two pins due to dust and dust in the environment to meet safety regulations, the center distance between the two pins of the MOS is only 5.45mm, the distance between the two pins of the MOS is only 3.35mm, and an insulating guide pipe is added, so that the operation is inconvenient; the traditional MOS stitch of industry control trade is not totally in a sealed place, and the time is of a specified duration, has the dust entering, and the dust is amassed at the stitch periphery, even increase insulating tube dust amass also can appear the short circuit and discover the trouble, has influenced its stability.

Therefore, on the premise of ensuring the performance, how to make the volume of the frequency converter as small as possible, the power density as large as possible and the cost as low as possible is a difficult problem to be overcome in the industry.

Disclosure of Invention

An object of the utility model is to provide a converter is with dustproof MOS tubular structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a dustproof MOS tube structure for a frequency converter comprises a plurality of MOS tube bodies, a dustproof cover, an aluminum-based PCB and a radiator;

it is a plurality of MOS manages the body and all welds on aluminium base PCB board to install on the radiator through aluminium base PCB board, the shield dress is on aluminium base PCB board, and is a plurality of MOS manages the body and arranges in the shield.

Preferably, the aluminum-based PCB comprises a circuit layer, an insulating layer and a metal substrate layer, and the insulating layer is disposed between the circuit layer and the metal substrate layer.

Preferably, the circuit layer is a copper foil layer.

Preferably, the dustproof cover comprises a cover body, wherein a plurality of partition plates are uniformly arranged on the inner wall of the cover body, and the partition plates are adjacent to each other, and pin blocking ribs are arranged between the partition plates.

Preferably, the dust cover, the aluminum-based PCB and the radiator are symmetrically provided with screw holes and fixed through screws.

The utility model discloses a technological effect and advantage:

1. the structure can ensure that the contact surface of the MOS tube and the aluminum-based PCB is completely laminated, the heat dissipation is good, the volume of the radiator can be reduced, no clamp is needed, the number of screws is reduced, and the cost is obviously reduced.

2. The aluminum-based PCB has a three-layer structure, can reduce the thermal resistance to the minimum, and has excellent heat conduction performance.

3. Stitch that the fender muscle through the shield closes the MOS separates apart completely, and the rethread is locked shield, aluminium base board PCB board on the radiator with the screw, need not to add insulation support to the stitch again, and a shield can keep apart all MOS pipe stitch once only, improves assembly efficiency, effective reduce cost.

4. Through shield to fixed MOS pipe front end all insert the casing in, realize dustproof, improve the stability can.

Drawings

Fig. 1 is an exploded view of the present invention;

FIG. 2 is a schematic view of a dust cover;

fig. 3 is a schematic diagram of the assembled device of the present invention.

In the figure: 1 screw, 2 shield, 3MOS pipe body, 4 aluminium base PCB boards, 5 radiators, 6 screw, 21 lids, 22 baffles, 23 stitch fender muscle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Fig. 1-fig. 3 show a specific embodiment of the utility model relates to a dustproof MOS tube structure for frequency converter: the MOS tube comprises a plurality of MOS tube bodies 3, a dust cover 2, an aluminum-based PCB 4 and a radiator 5; the MOS tube bodies 3 are all welded on the aluminum-based PCB 4 and are installed on the radiator 5 through the aluminum-based PCB 4, the dustproof cover 2 is installed on the aluminum-based PCB 4, and the MOS tube bodies 3 are arranged in the dustproof cover 2; the aluminum-based PCB 4 comprises a copper foil layer, an insulating layer and a metal substrate layer, wherein the insulating layer is arranged between the copper foil layer and the metal substrate layer; the LED lamp has the advantages that the LED lamp is provided with the front surface and the back surface, one surface is welded with the MOS tube, the other surface presents the natural color of aluminum, and the natural color of aluminum is coated with heat conducting paste before installation, so that the problem that the aluminum substrate is well fixed with the radiator 5 is solved, the contact surfaces are completely attached, and the heat dissipation is good; the dustproof cover 2 comprises a cover body 21, a plurality of partition plates 22 are uniformly arranged on the inner wall of the cover body 21, and pin blocking ribs 23 are arranged between every two adjacent partition plates 22; the dust cover 2, the aluminum-based PCB 4 and the radiator 5 are symmetrically provided with screw holes 6 and fixed by screws 1.

The utility model discloses it has reduced its volume that occupies greatly, power density beats, has reduced production and use cost simultaneously, can play fine dustproof radiating effect, has improved its stability.

The applicant further states that the present invention is described by the above embodiments, but the present invention is not limited to the above embodiments, i.e. the present invention is not limited to the above embodiments, and the present invention can be implemented only by relying on the above methods and structures. It should be clear to those skilled in the art that any improvement of the present invention is to the present invention, and the addition of the equivalent replacement of the implementation method and the steps, the selection of the specific mode, etc. all fall within the protection scope and the disclosure scope of the present invention.

The utility model discloses not limited to above-mentioned embodiment, all adopt and the utility model discloses similar structure and method realize the utility model discloses all modes of purpose all are within the protection scope of the utility model.

Claims (5)

1. The utility model provides a converter is with dustproof MOS pipe structure, includes a plurality of MOS pipe bodies (3), its characterized in that: the PCB further comprises a dustproof cover (2), an aluminum-based PCB (printed circuit board) (4) and a radiator (5);

it is a plurality of MOS manages body (3) all to weld on aluminium base PCB board (4) to install on radiator (5) through aluminium base PCB board (4), shield (2) dress is on aluminium base PCB board (4), and is a plurality of MOS manages body (3) and arranges in shield (2).

2. The dustproof MOS tube structure for the frequency converter according to claim 1, wherein: the aluminum-based PCB (4) comprises a circuit layer, an insulating layer and a metal substrate layer, wherein the insulating layer is arranged between the circuit layer and the metal substrate layer.

3. The dustproof MOS tube structure for the frequency converter according to claim 2, wherein: the circuit layer is a copper foil layer.

4. The dustproof MOS tube structure for the frequency converter according to claim 1, wherein: the dustproof cover (2) comprises a cover body (21), a plurality of partition plates (22) are uniformly arranged on the inner wall of the cover body (21), and pin blocking ribs (23) are arranged between the partition plates (22).

5. The dustproof MOS tube structure for the frequency converter according to claim 1, wherein: screw holes (6) are symmetrically formed in the dust cover (2), the aluminum-based PCB (4) and the radiator (5) and are fixed through screws (1).

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