Full-bridge driving silicon carbide inversion module

Abstract

The utility model relates to the technical field of electric power conversion devices, and discloses a full-bridge belt driven silicon carbide inversion module, which comprises a protection box, a silicon carbide inverter module, a silicon carbide inverter module, a silicon carbide inverter module, a silicon carbide inverter module and a silicon carbide inverter module driving module, and is characterized in that the protection box is internally provided with the silicon carbide inverter module; a cross screw, wherein the cross screw is arranged on the protection box; the dustproof net cover is arranged on the outer surface of the cross-shaped screw in a covering mode, the dustproof net cover is movably connected with the protection box, and the dustproof net cover is used for preventing dust; the protection box comprises a cross-shaped screw and a heat dissipation fan, the heat dissipation fan is arranged on the outer surface of the cross-shaped screw and located in the protection box, the heat dissipation fan is used for heat dissipation, the protection box comprises a lower box body, the full-bridge driving silicon carbide inversion module is arranged on the lower box body, and a lower clamping plate is fixedly installed on the outer surface of the lower box body. According to the utility model, not only can the full-bridge-driven silicon carbide inversion module be protected, but also the influence of external weather on the full-bridge-driven silicon carbide inversion module can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of power conversion devices, and specifically relates to a full-bridge SiC inverter module with a driver. Background Art

[0002] The full-bridge SiC inverter module with a driver is a power conversion device, which is usually used to convert a DC power supply into an AC power supply to drive loads such as motors. This module uses a SiC built-in diode field-effect transistor, which has advantages such as high-temperature performance, high-frequency response, and low switching losses, and can improve the power conversion efficiency and reliability. At the same time, it also uses a full-bridge drive technology, which can ensure a high-precision output waveform.

[0003] The inventor of the present utility model found in actual applications that: the traditional full-bridge SiC inverter module with a driver functions in an exposed operation method, that is, the module is affected by external weather. Therefore, we propose a full-bridge SiC inverter module with a driver. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the present utility model provides a full-bridge SiC inverter module with a driver, which has the advantages of avoiding the influence of external weather on the full-bridge SiC inverter module with a driver, and solves the problem that the module is affected by external weather.

[0006] (II) Technical Solutions

[0007] To achieve the above purpose of avoiding the influence of external weather on the full-bridge SiC inverter module with a driver, the present utility model provides the following technical solutions: a full-bridge SiC inverter module with a driver, comprising: a protective box, and the full-bridge SiC inverter module with a driver is arranged inside the protective box;

[0008] A cross-head screw, which is arranged on the protective box;

[0009] A dust-proof net cover, which is arranged on the outer surface of the cross-head screw and is movably connected with the protective box, and the dust-proof net cover is used for dust-proof;

[0010] A cooling fan, which is arranged on the outer surface of the cross-head screw and is located inside the protective box, and the cooling fan is used for heat dissipation.

[0011] As a preferred technical solution of the present utility model, the protective box includes a lower box body, the full-bridge SiC inverter module with a driver is arranged on the lower box body, and a lower clamping plate is fixedly installed on the outer surface of the lower box body, so as to facilitate placing the full-bridge SiC inverter module with a driver on the lower box body, and further facilitate protecting the full-bridge SiC inverter module with a driver.

[0012] As a preferred technical solution of the present utility model, the protective box further includes an upper box body, an upper clamping plate is fixedly installed inside the upper box body, the upper clamping plate is clamped inside the lower clamping plate, and the connection between the upper box body and the lower box body is joined by glue, so as to facilitate the assembly of the upper box body to the lower box body.

[0013] As a preferred technical solution of the present utility model, a circular groove is formed inside the top end of the upper box body, and the inner cavity of the circular groove is movably connected to the dust-proof net cover, so as to facilitate the placement of the dust-proof net cover in the circular groove.

[0014] As a preferred technical solution of the present utility model, a fixing hole is formed inside the top end of the upper box body, and the inner cavity of the fixing hole is movably connected to the cross screw, so as to facilitate the installation of the cross screw on the upper box body.

[0015] As a preferred technical solution of the present utility model, the dust-proof net cover includes a dust-proof net, the dust-proof net is located at the inner cavity of the circular groove, a plurality of connecting hooks are fixedly installed on the outer surface of the dust-proof net, the plurality of connecting hooks are arranged in a circumferential array, the connecting hooks are movably sleeved on the outer surface of the cross screw, and are in contact with the cooling fan, so as to play a role in dust prevention.

[0016] As a preferred technical solution of the present utility model, a plurality of fixing seats are fixedly installed on the outer surface of the cooling fan, the plurality of fixing seats are arranged in a circumferential array, the fixing seats are in contact connection with the connecting hooks, and the fixing seats are in threaded connection with the cross screw, so as to facilitate the fixing of the cooling fan on the upper box body by using the cross screw.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present utility model provides a full-bridge drive silicon carbide inverter module, which has the following beneficial effects:

[0019] 1. For this full-bridge drive silicon carbide inverter module, the dust-proof net cover is placed on the fixing seat of the cooling fan, and the upper box body is placed on the dust-proof net cover. At this time, the dust-proof net is in the circular groove, and the fixing hole is coaxial with the inner cavity of the connecting hook. Then, the dust-proof net cover and the cooling fan are fixed on the upper box body by using cross screws. At this time, the cross screws penetrate through the fixing hole and the inner cavity of the connecting hook, and are thread-fixed in the fixing seat until the dust-proof net cover and the cooling fan are fixed on the upper box body. Then, the full-bridge drive silicon carbide inverter module is placed on the lower box body, and the upper box body is assembled to the lower box body. At this time, the upper clamping plate is clamped inside the lower clamping plate, and at the same time, the joint between the upper box body and the lower box body is glued with glue, so as to facilitate the protection of the full-bridge drive silicon carbide inverter module and avoid the influence of external weather on the full-bridge drive silicon carbide inverter module.

[0020] 2. For this full-bridge drive silicon carbide inverter module, by starting the cooling fan, the cooling fan speeds up the air circulation in the protection box at this time to achieve the effect of dissipating heat from the full-bridge drive silicon carbide inverter module. During this period, the dust-proof net on the dust-proof net cover plays a role in dust prevention, thus facilitating the heat dissipation and dust prevention of the full-bridge drive silicon carbide inverter module. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 It is an exploded schematic diagram of the overall structure of the present utility model;

[0023] Figure 3 It is a schematic diagram of the dust-proof net cover in the overall structure of the present utility model.

[0024] In the figure: 1. Protection box; 11. Lower box body; 12. Lower clamping plate; 13. Upper box body; 14. Upper clamping plate; 15. Circular groove; 16. Fixing hole; 2. Cross screw; 3. Dust-proof net cover; 31. Dust-proof net; 32. Connecting hook; 4. Cooling fan; 41. Fixing seat. Detailed Description of the Embodiment

[0025] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings of the specification.

[0026] Refer to Figures 1 - 3 , a full-bridge drive silicon carbide inverter module is provided, including: a protection box 1, and a full-bridge drive silicon carbide inverter module is arranged inside the protection box 1;

[0027] Cross screws 2, and the cross screws 2 are arranged on the protection box 1;

[0028] The dust-proof net cover 3 is arranged on the outer surface of the cross screw 2 and is movably connected to the protection box 1. The dust-proof net cover 3 is used for dust prevention;

[0029] The cooling fan 4 is arranged on the outer surface of the cross screw 2 and is located inside the protection box 1. The cooling fan 4 is used for heat dissipation.

[0030] Refer to Figures 1 - 2 , the protection box 1 includes a lower box body 11. The full-bridge drive silicon carbide inverter module is arranged on the lower box body 11. A lower clamping plate 12 is fixedly installed on the outer surface of the lower box body 11.

[0031] The protection box 1 further includes an upper box body 13. An upper clamping plate 14 is fixedly installed inside the upper box body 13. The upper clamping plate 14 is clamped inside the lower clamping plate 12, and the connection between the upper box body 13 and the lower box body 11 is joined by glue.

[0032] A circular groove 15 is opened inside the top end of the upper box body 13. The inner cavity of the circular groove 15 is movably connected to the dust-proof net cover 3.

[0033] A fixing hole 16 is opened inside the top end of the upper box body 13. The inner cavity of the fixing hole 16 is movably connected to the cross screw 2. In practical applications, by placing the dust-proof net cover 3 on the fixing seat 41 on the cooling fan 4, and placing the upper box body 13 on the dust-proof net cover 3, then using the cross screw 2 to fix the dust-proof net cover 3 and the cooling fan 4 on the upper box body 13 until the dust-proof net cover 3 and the cooling fan 4 are fixed on the upper box body 13. Then, place the full-bridge drive silicon carbide inverter module on the lower box body 11 and assemble the upper box body 13 to the lower box body 11. At this time, the upper clamping plate 14 is clamped inside the lower clamping plate 12, and at the same time, use glue to bond the connection between the upper box body 13 and the lower box body 11, so as to facilitate the protection of the full-bridge drive silicon carbide inverter module and avoid the influence of external weather on the full-bridge drive silicon carbide inverter module.

[0034] Refer to Figures 2 - 3 , the dust-proof net cover 3 includes a dust-proof net 31. The dust-proof net 31 is located inside the inner cavity of the circular groove 15. A plurality of connection hooks 32 are fixedly installed on the outer surface of the dust-proof net 31. The plurality of connection hooks 32 are arranged in a circumferential array. The connection hook 32 is movably sleeved on the outer surface of the cross screw 2 and contacts the cooling fan 4.

[0035] A plurality of fixing seats 41 are fixedly installed on the outer surface of the heat dissipation fan 4. The plurality of fixing seats 41 are arranged in a circumferential array. The fixing seat 41 is in contact connection with the connecting hook 32, and the fixing seat 41 is in threaded connection with the cross screw 2. When it is necessary to dissipate heat from the full-bridge drive silicon carbide inverter module, by starting the heat dissipation fan 4, at this time, the heat dissipation fan 4 accelerates the air circulation in the protection box 1 to achieve the effect of dissipating heat from the full-bridge drive silicon carbide inverter module. During this period, the dust-proof net 31 on the dust-proof net cover 3 plays a role in dust prevention, thus facilitating the heat dissipation and dust prevention of the full-bridge drive silicon carbide inverter module.

[0036] During the actual use process, by placing the dust-proof net cover 3 on the fixing seat 41 on the heat dissipation fan 4 and placing the upper box body 13 on the dust-proof net cover 3, at this time, the dust-proof net 31 is located in the circular groove 15, and the fixing hole 16 is coaxial with the inner cavity of the connecting hook 32. Then, use the cross screw 2 to fix the dust-proof net cover 3 and the heat dissipation fan 4 on the upper box body 13. At this time, the cross screw 2 passes through the fixing hole 16 and the inner cavity of the connecting hook 32 and is threadedly fixed in the fixing seat 41 until the dust-proof net cover 3 and the heat dissipation fan 4 are fixed on the upper box body 13. Then, place the full-bridge drive silicon carbide inverter module on the lower box body 11 and assemble the upper box body 13 to the lower box body 11. At this time, the upper clamping plate 14 is clamped inside the lower clamping plate 12, and at the same time, use glue to bond the connection between the upper box body 13 and the lower box body 11, thus facilitating the protection of the full-bridge drive silicon carbide inverter module and avoiding the influence of external weather on the full-bridge drive silicon carbide inverter module.

[0037] When it is necessary to dissipate heat from the full-bridge drive silicon carbide inverter module, by starting the heat dissipation fan 4 fixed on the upper box body 13, at this time, the heat dissipation fan 4 accelerates the air circulation in the protection box 1 to achieve the effect of dissipating heat from the full-bridge drive silicon carbide inverter module. During this period, the dust-proof net 31 on the dust-proof net cover 3 plays a role in dust prevention, thus facilitating the heat dissipation and dust prevention of the full-bridge drive silicon carbide inverter module. This device can not only protect the full-bridge drive silicon carbide inverter module but also avoid the influence of external weather on the full-bridge drive silicon carbide inverter module.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limitations. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A full-bridge with drive silicon carbide inverter module, characterized in that: Including: A protective box (1), inside which there is a full-bridge SiC inverter module with a driver; A cross-head screw (2) provided on the protective box (1); A dust-proof net cover (3) provided on the outer surface of the cross-head screw (2) and movably connected to the protective box (1), and the dust-proof net cover (3) is used for dust-proofing; A cooling fan (4) provided on the outer surface of the cross-head screw (2) and located inside the protective box (1), and the cooling fan (4) is used for heat dissipation.

2. The full-bridge with drive silicon carbide inverter module according to claim 1, characterized in that: The protective box (1) includes a lower box body (11), the full-bridge SiC inverter module with a driver is provided on the lower box body (11), and a lower clamping plate (12) is fixedly installed on the outer surface of the lower box body (11).

3. The full-bridge belt-driven silicon carbide inverter module according to claim 2, characterized in that: The protective box (1) further includes an upper box body (13), an upper clamping plate (14) is fixedly installed on the inner side of the upper box body (13), the upper clamping plate (14) is clamped inside the lower clamping plate (12), and the connection between the upper box body (13) and the lower box body (11) is connected by glue.

4. The full-bridge belt-driven silicon carbide inverter module according to claim 3, characterized in that: A circular groove (15) is formed inside the top end of the upper box body (13), and the inner cavity of the circular groove (15) is movably connected to the dust-proof net cover (3).

5. A full-bridge with drive silicon carbide inverter module according to claim 3, characterized in that: A fixing hole (16) is formed inside the top end of the upper box body (13), and the inner cavity of the fixing hole (16) is movably connected to the cross-head screw (2).

6. A full-bridge with drive silicon carbide inverter module according to claim 4, characterized in that: The dust-proof net cover (3) includes a dust-proof net (31) located in the inner cavity of the circular groove (15), and a plurality of connecting hooks (32) are fixedly installed on the outer surface of the dust-proof net (31). The plurality of connecting hooks (32) are arranged in a circumferential array, and the connecting hooks (32) are movably sleeved on the outer surface of the cross-head screw (2) and are in contact with the cooling fan (4).

7. A full-bridge with drive silicon carbide inverter module according to claim 6, characterized in that: A plurality of fixing seats (41) are fixedly installed on the outer surface of the cooling fan (4). The plurality of fixing seats (41) are arranged in a circumferential array. The fixing seats (41) are in contact connection with the connecting hooks (32), and the fixing seats (41) are threadedly connected to the cross-head screw (2).

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