Thin film capacitor module for three-level inverter

Abstract

The utility model relates to related technical field of capacitor module especially uses film capacitor module of three -level inverter, including electric capacity, the outside surface of electric capacity is provided with fixed establishment, the outside surface of electric capacity is provided with protection mechanism. This uses film capacitor module of three -level inverter, first through the effect of fixed block and first screw, can firmly fix electric capacity on mounting seat, again through second screw penetrates threaded hole and fixes mounting seat on circuit board, makes electric capacity more stable, is not easy to fall off, has guaranteed normal work of capacitor module, simultaneously, this kind of fixed mode is easy to operate, easy to dismantle and maintain, has improved work efficiency, through the setting of fifth screw, can install protective cover more firmly on the protection plate, this design not only has strengthened the overall structural stability of capacitor module, also effectively prevented the situation that protective cover appeared loose or fell off in the use process, improved the security and reliability of capacitor module.

Description

Technical Field

[0001] This utility model relates to the technical field of capacitor modules, and in particular to a thin-film capacitor module for a three-level inverter. Background Technology

[0002] A capacitor module is composed of multiple thin-film capacitor units. These capacitor units are precisely designed and laid out to ensure stable and efficient capacitor performance in high-voltage and high-frequency three-level inverter systems. Each thin-film capacitor unit is rigorously selected to ensure that it has a high dielectric constant, low loss and good self-healing ability, thereby maintaining excellent electrical performance during long-term operation. In addition, thin-film capacitor modules for three-level inverters are particularly needed to improve the fixing effect.

[0003] Because of the existing capacitor modules, most traditional capacitor modules are relatively complicated to install and have poor fixing effect, which can easily lead to loose connections between capacitor units and affect capacitor performance. Summary of the Invention

[0004] The purpose of this invention is to provide a thin-film capacitor module for a three-level inverter, in order to solve the problem mentioned in the background art that the existing cutting device is complicated to install and has poor fixing effect, which can easily lead to loose connection between capacitor units and affect capacitor performance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a thin-film capacitor module for a three-level inverter, including a capacitor, a fixing mechanism provided on the outer surface of the capacitor, and a protective mechanism provided on the outer surface of the capacitor;

[0006] The fixing mechanism includes a fixing block, a first screw, a mounting base, a threaded hole, and a second screw. The fixing block is fixedly connected to the outer surface of the capacitor, and the first screw is connected through the outer surface of the fixing block. The mounting base is provided on the bottom wall of the capacitor, and the inner surface of the mounting base has a threaded hole. The inner surface of the threaded hole is connected through the second screw.

[0007] Preferably, the protective mechanism includes a protective plate, a fixing plate, a protective cover, a third screw, a fourth screw, and a fifth screw. The outer surface of the mounting base is provided with a protective plate, the inner surface of the protective plate is installed with a fixing plate, the inner surface of the protective plate is installed with a protective cover, the outer wall of the protective plate is connected with a third screw, the outer wall of the protective plate is connected with a fourth screw, and the outer wall of the protective plate is connected with a fifth screw.

[0008] Preferably, the fixing blocks are evenly distributed on the outer wall of the capacitor, and the first screw passes through the fixing block and connects to the mounting base.

[0009] Preferably, the inner surface of the threaded hole matches the outer surface of the second screw, and the second screw is evenly distributed on the mounting base.

[0010] Preferably, the protective plate is symmetrically arranged about the width centerline of the mounting base, and the inner surface of the protective plate matches the outer surface of the mounting base.

[0011] Preferably, the third screw penetrates the protective plate and connects to the mounting base, and the fourth screw penetrates the protective plate and connects to the fixing plate.

[0012] Preferably, the fifth screw penetrates the protective plate and connects to the protective cover, and the third screw is symmetrically arranged with respect to the width centerline of the mounting base.

[0013] Preferably, the fourth screw is symmetrically arranged with respect to the width axis of the mounting base, and the fifth screw is symmetrically arranged with respect to the width axis of the mounting base.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the thin film capacitor module for the three-level inverter firstly uses the fixing block and the first screw to firmly fix the capacitor on the mounting base, and then uses the second screw to fix the mounting base on the circuit board through the threaded hole, making the capacitor more stable and less likely to fall off, thus ensuring the normal operation of the capacitor module. At the same time, this fixing method is simple to operate, easy to disassemble and maintain, and improves work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0016] Figure 2 This is a schematic diagram of the overall disassembly structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the fixing mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the protective mechanism structure of this utility model.

[0019] In the diagram: 1. Capacitor; 2. Fixing mechanism; 21. Fixing block; 22. First screw; 23. Mounting base; 24. Threaded hole; 25. Second screw; 3. Protective mechanism; 31. Protective plate; 32. Fixing plate; 33. Protective cover; 34. Third screw; 35. Fourth screw; 36. Fifth screw. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a thin film capacitor module for a three-level inverter, including a capacitor 1, a fixing mechanism 2 and a protective mechanism 3 on the outer surface of the capacitor 1.

[0022] The fixing mechanism 2 includes a fixing block 21, a first screw 22, a mounting base 23, a threaded hole 24, and a second screw 25. The fixing block 21 is fixedly connected to the outer surface of the capacitor 1, and the first screw 22 is passed through the outer surface of the fixing block 21. The mounting base 23 is provided on the bottom wall of the capacitor 1, and the inner surface of the mounting base 23 has a threaded hole 24. The second screw 25 is passed through the inner surface of the threaded hole 24. Through the setting of the fixing block 21, the first screw 22, the mounting base 23, the threaded hole 24, and the second screw 25, in use, the capacitor can be firmly fixed to the mounting base 23 by the action of the fixing block 21 and the first screw 22. Then, the mounting base 23 is fixed to the circuit board by the second screw 25 passing through the threaded hole 24, making the capacitor 1 more stable and less likely to fall off, ensuring the normal operation of the capacitor module. At the same time, this fixing method is simple to operate, easy to disassemble and maintain, and improves work efficiency.

[0023] Furthermore, the protective mechanism 3 includes a protective plate 31, a fixing plate 32, a protective cover 33, a third screw 34, a fourth screw 35, and a fifth screw 36. The outer surface of the mounting base 23 is provided with the protective plate 31, the inner surface of the protective plate 31 is installed with the fixing plate 32, and the inner surface of the protective plate 31 is installed with the protective cover 33. The outer wall of the protective plate 31 is connected to the third screw 34, the fourth screw 35, and the fifth screw 36. Through the arrangement of the protective plate 31, fixing plate 32, protective cover 33, third screw 34, fourth screw 35, and fifth screw 36, in use, the third screw 34 is first inserted through the protective plate 31. The plate 31 is fixed to the mounting base 23. The design of the protective plate 31 can effectively prevent external dust and debris from entering the capacitor module, avoiding damage to the capacitor module. At the same time, the setting of the fixing plate 32 can prevent external force from causing the capacitor 1 to shift or loosen, improving the stability of the capacitor module. The fixing plate 32, together with the protective plate 31 and the protective cover 33, form a stable protective structure, which not only enhances the shock resistance of the capacitor module, but also ensures the safety of the capacitor module during operation. In addition, the protective cover 33 covers the top of the capacitor module, providing all-round protection for the capacitor module, further improving the safety and stability of the capacitor module.

[0024] Furthermore, the fixing blocks 21 are evenly distributed on the outer wall of the capacitor 1, and the first screw 22 passes through the fixing blocks 21 and connects to the mounting base 23. The fixing blocks 21 make the capacitor 1 more stable on the mounting base 23, avoiding the problem of the capacitor 1 loosening or falling off due to vibration or external force. At the same time, the through connection of the first screw 22 not only enhances the connection strength between the fixing blocks 21 and the mounting base 23, but also facilitates the disassembly and replacement of the capacitor 1, improving the maintenance convenience of the capacitor module. In addition, the design of the evenly distributed fixing blocks 21 ensures that the capacitor 1 is evenly stressed on the mounting base 23, further improving the stability and service life of the capacitor module.

[0025] Furthermore, the inner surface of the threaded hole 24 matches the outer surface of the second screw 25. The second screws 25 are evenly distributed on the mounting base 23. Through the setting of the threaded hole 24, the second screws 25 can be firmly installed on the mounting base 23. This threaded connection not only enhances the connection strength between the mounting base 23 and other components of the capacitor module, but also makes the assembly and disassembly process of the capacitor module simpler and faster, improving work efficiency.

[0026] Furthermore, the protective plate 31 is symmetrically arranged with respect to the width axis of the mounting base 23. The inner surface of the protective plate 31 matches the outer surface of the mounting base 23. By setting the protective plate 31, the capacitor 1 can be effectively protected from interference and damage from the external environment, such as dust and moisture, thereby extending the service life of the capacitor module. At the same time, the matching of the inner surface of the protective plate 31 with the outer surface of the mounting base 23 makes the fit between the protective plate 31 and the mounting base 23 higher, further improving the protection effect of the capacitor module.

[0027] Furthermore, the third screw 34 penetrates the protective plate 31 and connects to the mounting base 23, and the fourth screw 35 penetrates the protective plate 31 and connects to the fixing plate 32. With the setting of the third screw 34, the protective plate 31 can be more securely installed on the mounting base 23, which enhances the structural stability of the capacitor module.

[0028] Furthermore, the fifth screw 36 penetrates the protective plate 31 and connects to the protective cover 33. The third screw 34 is symmetrically arranged with respect to the width of the mounting base 23. With the fifth screw 36, the protective cover 33 can be more firmly installed on the protective plate 31. This design not only enhances the overall structural stability of the capacitor module, but also effectively prevents the protective cover 33 from loosening or falling off during use, further improving the safety and reliability of the capacitor module.

[0029] Working Principle: In actual operation, the capacitor is first firmly fixed to the mounting base 23 by the fixing block 21 and the first screw 22. Then, the mounting base 23 is fixed to the circuit board by the second screw 25 through the threaded hole 24, making the capacitor 1 more stable and less prone to falling off, ensuring the normal operation of the capacitor module. At the same time, this fixing method is simple to operate, easy to disassemble and maintain, and improves work efficiency. Then, the third screw 34 is fixed to the mounting base 23 by passing through the protective plate 31. The design of the protective plate 31 can effectively prevent external dust and debris from entering the capacitor module and avoid damage to the capacitor module. At the same time, the setting of the fixing plate 32 can prevent external force from causing the capacitor 1 to shift or loosen, improving the stability of the capacitor module. The fixing plate 32, together with the protective plate 31 and the protective cover 33, form a stable protective structure, which not only enhances the shock resistance of the capacitor module, but also ensures the safety of the capacitor module during operation. In addition, the protective cover 33 covers the top of the capacitor module, providing all-round protection for the capacitor module, further improving the safety and stability of the capacitor module.

Claims

1. A thin-film capacitor module for a three-level inverter, comprising a capacitor (1), characterized in that: A fixing mechanism (2) is provided on the outer surface of the capacitor (1), and a protective mechanism (3) is provided on the outer surface of the capacitor (1). The fixing mechanism (2) includes a fixing block (21), a first screw (22), a mounting base (23), a threaded hole (24), and a second screw (25). The fixing block (21) is fixedly connected to the outer surface of the capacitor (1). The first screw (22) is connected through the outer surface of the fixing block (21). The mounting base (23) is provided on the bottom wall of the capacitor (1). The inner surface of the mounting base (23) is provided with a threaded hole (24). The inner surface of the threaded hole (24) is connected through the second screw (25).

2. The thin-film capacitor module for a three-level inverter according to claim 1, characterized in that: The protective mechanism (3) includes a protective plate (31), a fixing plate (32), a protective cover (33), a third screw (34), a fourth screw (35), and a fifth screw (36). The outer surface of the mounting base (23) is provided with a protective plate (31), the inner surface of the protective plate (31) is provided with a fixing plate (32), the inner surface of the protective plate (31) is provided with a protective cover (33), the outer wall of the protective plate (31) is connected with a third screw (34), the outer wall of the protective plate (31) is connected with a fourth screw (35), and the outer wall of the protective plate (31) is connected with a fifth screw (36).

3. The thin-film capacitor module for a three-level inverter according to claim 1, characterized in that: The fixing blocks (21) are evenly distributed on the outer wall of the capacitor (1), and the first screw (22) passes through the fixing blocks (21) and connects to the mounting base (23).

4. The thin-film capacitor module for a three-level inverter according to claim 1, characterized in that: The inner surface of the threaded hole (24) matches the outer surface of the second screw (25), which is evenly distributed on the mounting base (23).

5. The thin-film capacitor module for a three-level inverter according to claim 2, characterized in that: The protective plate (31) is symmetrically arranged about the width centerline of the mounting base (23), and the inner surface of the protective plate (31) matches the outer surface of the mounting base (23).

6. The thin-film capacitor module for a three-level inverter according to claim 2, characterized in that: The third screw (34) passes through the protective plate (31) and connects to the mounting base (23), and the fourth screw (35) passes through the protective plate (31) and connects to the fixing plate (32).

7. The thin-film capacitor module for a three-level inverter according to claim 2, characterized in that: The fifth screw (36) passes through the protective plate (31) and connects to the protective cover (33), and the third screw (34) is symmetrically arranged with respect to the width of the mounting base (23).

8. The thin-film capacitor module for a three-level inverter according to claim 2, characterized in that: The fourth screw (35) is symmetrically arranged with respect to the width axis of the mounting base (23), and the fifth screw (36) is symmetrically arranged with respect to the width axis of the mounting base (23).

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