Box body and inverter

Abstract

The utility model relates to a box and an inverter, and relates to the technical field of electrical products, the box comprises a shell and a cover plate, the cover plate and the shell are fixed through a connecting piece, and the connecting piece penetrates through the cover plate and the shell and is connected with a deformation piece; the deformation piece is used for deforming in the axial direction of the connecting piece during explosion so that a discharge channel can be formed between the cover plate and the shell. When the interior of the box body explodes, the deformation piece deforms, the original tight connection is gradually loosened, a release channel is formed between the cover plate and the shell, and pressure and gas generated by explosion are released along the release channel. By means of the design of the deformation piece and the deformation mechanism, release of explosion pressure can be controlled, and the risk that the cover plate and the shell are violently separated or broken is avoided; according to the design, the deformation part is preset, so that the box body can have a clear and controlled energy release channel when explosion occurs, and the harm to personnel and equipment due to the fact that the cover plate flies out or the box body is broken is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electrical products, and in particular to a box and an inverter. Background Art

[0002] Inverters and other power electronics play a vital role in power conversion. However, these devices can explode during operation due to short circuits, overloads, or component defects, commonly referred to in the industry as "explosion." For example, a capacitor explosion is often accompanied by the generation of large amounts of high-temperature, high-pressure gas. This energy release can cause the inverter's housing, cover, and other internal hardware or power distribution components to fly out at high speeds, posing a serious threat to personnel on site and potentially causing fatal injuries.

[0003] To reduce the incidence of explosions, engineers are constantly exploring various solutions. While recent technological advances have reduced the probability of explosions, the factors influencing this probability remain complex, including the designer's technical level, design maturity, and power density. Furthermore, factors such as component quality, consistency, application scenario, and on-site operating environment also need to be considered. Therefore, while the probability of explosions is low, the potential losses can be substantial, making explosion-proof design a crucial task for structural engineers.

[0004] Currently, the primary method for preventing explosions is explosion-proofing. This design, through specialized structures such as the inverter cover or explosion-proof ducts, ensures effective energy release in the event of an explosion. However, this design places high demands on engineers' technical expertise, requiring a balance between effective explosion-proofing and preventing the ejection of components and structural parts. Existing designs often struggle to achieve this balance.

[0005] To this end, a new design is proposed to ensure that the energy generated by the explosion can be effectively released while preventing devices or structural parts from flying out due to the explosion, thereby improving the safety and reliability of the equipment. Utility Model Content

[0006] In order to ensure that the energy generated by the explosion is released while preventing devices or structural parts from flying out due to the explosion, the present application provides a box and an inverter.

[0007] The box and inverter provided in this application adopt the following technical solutions:

[0008] A box body includes an outer shell and a cover plate, wherein the cover plate and the outer shell are fixed by a connecting piece, and the connecting piece passes through the cover plate and the outer shell and is connected to a deformable piece; the deformable piece is used to deform along the axial direction of the connecting piece during an explosion to form a discharge channel between the cover plate and the outer shell.

[0009] By adopting the above technical solution, when an explosion occurs inside the box, the energy generated by the explosion will quickly act on the inner wall and cover of the box. Due to the design of the connecting parts and the deforming parts, the energy of the explosion will cause the deforming parts to deform along the axial direction of the connecting parts, and the originally tight connection between the connecting parts and the outer shell will gradually loosen, thereby forming a discharge channel between the cover and the outer shell. The pressure and gas generated by the explosion are released along the discharge channel, thereby avoiding damage to the box structure or the cover being violently bounced off due to excessive pressure; the present application utilizes the design of deforming parts and deformation mechanisms to effectively control the release of explosion pressure and avoid the risk of violent separation or rupture of the cover and the outer shell; the design presets deforming parts so that the box can have a clear and controlled energy release channel when an explosion occurs, thereby reducing the harm to personnel and equipment due to the cover flying out or the box rupture.

[0010] In a specific possible implementation scheme, the deformable member is fixed to the housing via a limiting member.

[0011] By adopting the above technical solution, the deformable part is fixed in position on the outer shell by means of a limiter to prevent the deformable part from displacement or falling off; and it is ensured that the deformable part can deform according to the designed trajectory, preventing the deformable part from irregularly offsetting or dislocating during the explosion process, thereby improving the stability of the discharge channel and making the pressure release process smoother.

[0012] In a specific possible implementation scheme, the limiting member includes a pressing plate and a fixing nail. The pressing plate passes through the deformable member and presses the deformable member onto the shell. The pressing plate is connected to the shell via the fixing nail.

[0013] By adopting the above technical solution, during installation, the pressure plate passes through the deformable part and presses the deformable part against the outer shell, maintaining close contact between the deformable part and the outer shell, and preventing the deformable part from falling off during explosion or internal pressure changes; the pressing effect of the pressure plate and the firm connection of the fixing pins ensure the stability and reliability of the system, enhance the explosion resistance of the equipment, and simplify the maintenance process.

[0014] In a specific possible implementation scheme, the deformable part includes a step structure and an anti-rotation structure, the pressure plate is provided with a through hole, the step structure abuts between the shell and the pressure plate, the anti-rotation structure passes through the through hole, and the anti-rotation structure is surface-to-surface matched with the through hole.

[0015] By adopting the above technical solution, during installation, one end of the step structure contacts the shell, and the other end contacts the pressure plate, ensuring that the deformable part is firmly fixed between the pressure plate and the shell, and the anti-rotation structure passes through the through hole on the pressure plate and fits tightly with the through hole surface; the abutment between the step structure and the shell and the pressure plate provides a stable support surface, avoiding the displacement of the deformable part when it is subjected to external pressure, and the anti-rotation structure can prevent the deformable part from rotating when it is subjected to pressure by surface-to-surface cooperation with the through hole, ensuring that the deformable part always deforms in the correct direction, and ensuring the stability of the pressure release path.

[0016] In a specific possible implementation scheme, the pressure plate includes a mounting portion and a drop portion, the through hole is provided in the drop portion, the drop portion abuts against the step structure of the deformation member, and the mounting portion is connected to the housing through the fixing nail.

[0017] By adopting the above technical solution, the mounting part is firmly connected to the outer casing by fixing nails, ensuring that the pressure plate will not be displaced due to internal pressure or other factors during the operation of the equipment. The design of the drop part makes it in close contact with the step structure of the deformable part, ensuring that the pressure is evenly distributed on the deformable part.

[0018] In a specific possible implementation scheme, the housing is provided with a mounting surface, the mounting surface is provided with a mounting hole, and the mounting hole is used for mounting the connecting member and the deformable member.

[0019] By adopting the above technical solution, the design of the mounting hole provides a direct path for connecting the connector and the deformable part, simplifies the assembly process, does not require complicated docking or adjustment, saves time and cost, and enables the connector and the deformable part to be easily disassembled, thereby making replacement or maintenance easier.

[0020] In a specific possible implementation manner, the cover plate is provided with a sealing ring, and the sealing ring abuts against the mounting surface.

[0021] By adopting the above technical solution, the sealing ring forms a closed contact surface between the cover and the outer shell, preventing external substances such as moisture, dust, oil, etc. from entering the interior of the device, ensuring that the internal environment of the device is not affected by the outside world and extending the service life.

[0022] In a specific possible implementation scheme, the cover plate is provided with a countersunk head, which is used for installation of the connector and for controlling the degree of compression of the sealing ring when the cover plate is tightened.

[0023] By adopting the above technical solution, the design of the countersunk head facilitates the installation of the connector, so that the connector can be embedded more flatly in the surface of the cover plate to avoid exposure or unevenness; and the compression of the sealing ring can be controlled by the depth of the countersunk head. By adjusting the depth of the countersunk head, the pressure between the cover plate and the sealing ring when the connector is tightened is determined, thereby ensuring that the sealing ring is compressed to an appropriate degree. The appropriate compression amount can ensure that the sealing ring effectively prevents leakage, thereby achieving good sealing performance.

[0024] In a specific possible implementation scheme, a heat sink is further included. The housing is provided with a hollow area, and the heat sink is arranged corresponding to the hollow area.

[0025] By adopting the above technical solution and utilizing the hollow design and the combination of the radiator, natural convection of air can be promoted. The hollow area can effectively guide the air flow to the surface of the radiator, while helping the hot air to be discharged smoothly, so that the device can better exchange heat with the external environment and maintain a lower operating temperature, thereby improving the performance of the device and extending its service life.

[0026] In a specific embodiment, the housing is provided with a wiring hole.

[0027] By adopting the above technical solution, the wiring hole provides a standardized connection interface for the wiring terminal, making the wiring process simpler and faster, and reducing the installation difficulty that may be caused by improper wiring. The design of the wiring hole can ensure that the electrical connection is more stable and firm, thereby avoiding safety hazards such as looseness or short circuit.

[0028] An inverter includes the box as described above.

[0029] By adopting the above technical solution, the inverter using the above cabinet design has significant technical advantages, especially in improving the safety, heat dissipation performance, sealing protection, structural stability and maintenance convenience of the equipment. The multiple designs of the cabinet, including deformable parts, sealing, heat dissipation design, and stable fixing structure, act comprehensively on the inverter, improving its operating reliability and durability in complex and harsh environments; the deformable parts and discharge channel design in the cabinet design can release explosions or excessive pressure in time when abnormally high pressure occurs inside the inverter (such as short circuit, overload, etc.). The deformable parts deform axially along the connecting parts to form a discharge channel, thereby preventing the cabinet shell or cover from rupturing due to excessive pressure or the cover from being forcefully bounced off.

[0030] To summarize, the present application includes at least one of the following beneficial technical effects: multiple designs of the box, including deformable parts, sealing, heat dissipation design, and stable fixed structure, have significant advantages in improving the safety, heat dissipation performance, sealing protection, structural stability, and maintenance convenience of the equipment, and can improve the operating reliability and durability of the equipment in complex and harsh environments; the deformable parts and discharge channel design in the box design can release explosions or excessive pressure in time when abnormally high pressure occurs inside the equipment. The deformable parts deform axially along the connecting parts to form a discharge channel to prevent the box shell or cover from rupturing due to excessive pressure or the cover being forcefully bounced off; the design uses pre-set deformable parts to enable the box to have a clear and controlled energy release channel when an explosion occurs, thereby reducing the harm to personnel and equipment caused by the cover flying out or the box rupturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural diagram of the box body of the embodiment of the present application.

[0032] Figure 2 This is a cross-sectional view showing the structure of a rivet nut in its initial state.

[0033] Figure 3 This is a cross-sectional view used to show the structure of the rivet nut after deformation during an explosion.

[0034] Figure 4 It is a schematic diagram used to show the structure of the rivet nut and the pressure plate.

[0035] Figure 5 It is a cross-sectional view used to show rivet nuts, bolts, and limiters.

[0036] Figure 6 This is a cross-sectional view showing the cover, seal, and housing mounting surface.

[0037] Figure 7 It is a schematic diagram used to show the structure of the radiator.

[0038] Explanation of the accompanying drawings: 1. Housing; 11. Mounting surface; 12. Mounting hole; 13. Hollow area; 2. Cover plate; 21. Countersunk head; 3. Connector; 31. Bolt; 4. Deformation member; 41. Rivet nut; 42. Step structure; 43. Anti-rotation structure; 5. Discharge channel; 6. Limiting member; 61. Pressure plate; 62. Fixing nail; 63. Anti-loosening nut; 64. Through hole; 65. Mounting part; 66. Drop part; 7. Sealing ring; 8. Gasket; 9. Radiator; 10. Wiring hole. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-7 This application is described in further detail.

[0040] Reference Figure 1 The present application discloses a box. In this embodiment, the box includes but is not limited to inverters, and can also be applied to other electrical products that may explode, such as frequency converters, SVGs, and automotive DC-DCs.

[0041] Reference Figure 2 and Figure 3 The box body includes a shell 1 and a cover plate 2. The cover plate 2 is used to close the shell 1 to form a closed internal space. The cover plate 2 and the shell 1 are fixed by a connecting member 3. The connecting member 3 passes through the cover plate 2 and the shell 1 and is connected to a deformable member 4. In this embodiment, the connecting member 3 is a bolt 31. The bolt 31 is vertically arranged. The deformable member 4 is a rivet nut 41. The bolt 31 passes through the cover plate 2 and the shell 1 and is threadedly connected to the rivet nut 41.

[0042] The rivet nut 41 is used to deform along the axial direction of the bolt 31 when the inverter explodes, so as to form a discharge channel 5 between the cover plate 2 and the housing 1. In this embodiment, the rivet nut 41 can be customized or purchased from an existing standard part. The design of the rivet nut 41 should meet the following requirements: during actual installation, the bolt 31 cannot pull the rivet nut 41 to plastic deformation, but the force corresponding to the inverter explosion can pull the rivet nut 41 to plastic deformation.

[0043] When the inverter explodes, since the entire box is a sealed structure, the high-temperature gas generated by the explosion will cause the gas in the box to rise sharply. The energy generated by the explosion will quickly act on the inner wall of the box and the cover plate 2, and the pressure is transmitted to the cover plate 2, and the cover plate 2 is then transmitted to the bolt 31, and the bolt 31 is then transmitted to the rivet nut 41. The energy of the explosion will cause the rivet nut 41 to deform along the axial direction of the bolt 31. The originally tight connection between the connector 3 and the shell 1 gradually loosens, and the rivet nut 41 will immediately produce plastic deformation. In one direction, it absorbs a certain amount of explosion energy. In the other direction, after the rivet nut 41 produces plastic deformation, a gap will be formed between the box and the cover plate 2, so that there is a discharge channel 5 for energy. The pressure and gas generated by the explosion are released along the discharge channel 5, thereby avoiding excessive pressure causing damage to the box structure or the cover plate 2 being violently bounced off.

[0044] During this process, the design of the bolts 31, the rivet nuts 41 and the deformation mechanism can effectively control the release of the explosion pressure, avoiding the risk of violent separation or rupture of the cover 2 and the shell 1; this design, through the preset deformation part 4, enables the box to have a clear and controlled energy release channel when an explosion occurs, thereby reducing the harm to personnel and equipment due to the cover 2 flying out or the box rupture.

[0045] Reference Figure 2 and Figure 3In this embodiment, the housing 1 is provided with a mounting surface 11, and the mounting surface 11 is provided with a mounting hole 12. The mounting hole 12 is used for the installation of the bolt 31 of the connecting member 3 and the rivet nut 41 of the deformable member 4. The design of the mounting hole 12 provides a direct path for the connection between the connecting member 3 and the deformable member 4, simplifies the assembly process, does not require complicated docking or adjustment, saves time and cost, and enables the connecting member 3 and the deformable member 4 to be easily disassembled, thereby making replacement or maintenance easier.

[0046] Reference Figure 4 and Figure 5 The rivet nut 41 is fixed to the housing 1 through a limiting member 6. The limiting member 6 includes a pressure plate 61 and a fixing pin 62. The pressure plate 61 passes through the rivet nut 41 and presses the rivet nut 41 onto the housing 1. The pressure plate 61 is connected to the housing 1 through the fixing pin 62. In this embodiment, the fixing pin 62 passes through the housing 1 and the pressure plate 61 and is threadedly connected with a locknut 63. The pressing effect of the pressure plate 61 and the firm connection between the fixing pin 62 and the locknut 63 ensure the stability and reliability of the system, enhance the explosion resistance of the equipment, and simplify the maintenance process.

[0047] In this embodiment, the rivet nut 41 includes a step structure 42 and an anti-rotation structure 43, and the pressure plate 61 is provided with a through hole 64. The step structure 42 abuts between the outer shell 1 and the pressure plate 61. The abutment between the step structure 42, the outer shell 1 and the pressure plate 61 provides a stable support surface, thereby avoiding the displacement of the deformable part 4 when subjected to external pressure; the anti-rotation structure 43 passes through the through hole 64. In this embodiment, the anti-rotation structure 43 is a hexagonal anti-rotation structure, and the through hole 64 is a hexagonal hole. The anti-rotation structure 43 and the through hole 64 are matched surface to surface. In this embodiment, the anti-rotation structure 43 includes a deformation section and a threaded section. The deformation section is arranged close to the step structure 42, and the threaded section is used for threaded connection with the bolt 31; through the surface-to-surface matching design between the anti-rotation structure 43 and the through hole 64, the deformable part 4 can be prevented from rotating when subjected to pressure, ensuring that the deformable part 4 always deforms in the correct direction and ensuring the stability of the pressure release path.

[0048] The pressure plate 61 includes a mounting portion 65 and a drop portion 66. In this embodiment, the pressure plate 61 is initially a straight plate. The drop portion 66 is formed by bending the middle position downward, and the mounting portions 65 are formed on both sides. The through hole 64 is opened in the drop portion 66. The drop portion 66 abuts the step structure 42 of the rivet nut 41 on the shell 1. The two mounting portions 65 are connected to the shell 1 through the fixing nail 62. The fixing nail 62 passes through the shell 1 and the mounting portion 65 and is then threadedly connected to the anti-loosening nut 63. The anti-loosening nut 63 abuts the mounting portion 65 on the shell 1 to achieve fixation; the mounting portion 65 is firmly connected to the shell 1 through the fixing nail 62 to ensure that the pressure plate 61 will not be displaced due to internal pressure or other factors during the operation of the equipment. The design of the drop portion 66 makes it in close contact with the step structure 42 of the deformable member 4 to ensure that the pressure is evenly distributed on the deformable member 4.

[0049] Reference Figure 5 and Figure 6 The cover plate 2 is provided with a sealing ring 7, which is arranged along the circumference of the cover plate 2 and abuts against the mounting surface 11; the sealing ring 7 forms a closed contact surface between the cover plate 2 and the outer shell 1, forming a sealing structure between the cover plate 2 and the outer shell 1, which can prevent external substances such as moisture, dust, and oil from entering the interior of the device, ensuring that the internal environment of the device is not affected by the outside world and extending its service life.

[0050] The cover plate 2 is also provided with a countersunk head 21, which is a conical groove structure. The countersunk head 21 is used for the installation of the bolt 31 and is used to control the degree of compression of the sealing ring 7 when the cover plate 2 is tightened. During installation, the countersunk head 21 can facilitate the installation of the bolt 31, so that the bolt 31 can be more flatly embedded in the surface of the cover plate 2 to avoid exposure or unevenness. The compression amount of the sealing ring 7 can be controlled by the drop depth of the countersunk head 21. By adjusting the depth of the countersunk head 21, the pressure between the cover plate 2 and the sealing ring 7 when the bolt 31 is tightened is determined, thereby ensuring that the sealing ring 7 is compressed to an appropriate degree. The appropriate compression amount can ensure that the sealing ring 7 effectively prevents leakage, thereby achieving good sealing performance.

[0051] In this embodiment, a gasket 8 is provided in the countersunk head 21, and the bolt 31 first passes through the gasket 8 and then passes through the cover plate 2, and the gasket 8 abuts between the bolt 31 and the cover plate 2; the gasket 8 can evenly distribute the pressure generated during tightening between the bolt 31 and the cover plate 2, avoiding the bolt 31 from directly applying excessive concentrated pressure to the cover plate 2; and during an explosion, the cover plate 2 and the bolt 31 usually undergo thermal expansion due to temperature changes. The gasket 8 plays a buffering role in this process, which can absorb some stress changes caused by thermal expansion, reduce damage caused by thermal stress, and avoid cracks or deformation of the cover plate 2 due to limited expansion.

[0052] Reference Figure 5 and Figure 6During installation, first fix the rivet nut 41 on the housing 1, and the anti-rotation structure 43 of the rivet nut 41 passes through the through hole 64 of the drop portion 66, and the step structure 42 abuts against the drop portion 66, and then use the fixing nail 62 to fix the pressure plate 61 on the mounting surface 11 of the housing 1, and pass the fixing nail 62 through the mounting surface 11 of the housing 1 and then through the mounting portion 65 of the pressure plate 61. Screw on the anti-loosening nut 63 at one end of the fixing nail 62 that passes through the mounting portion 65, tighten the anti-loosening nut 63, and the anti-loosening nut 63 abuts the mounting portion 65 of the pressure plate 61 on the housing 1. At the same time, the drop portion 66 of the pressure plate 61 abuts the step structure 42 of the rivet nut 41 on the housing 1, completing the fixing and limiting of the rivet nut 41;

[0053] Then place the cover plate 2 on the outer shell 1 to close the outer shell 1, place the gasket 8 on the cover plate 2, screw on the bolt 31, one end of the bolt 31 passes through the gasket 8, the countersunk head 21 of the cover plate 2, and the mounting surface 11 of the outer shell 1, and then is threadedly connected and fixed with the rivet nut 41. The other end of the bolt 31 abuts the gasket 8 on the cover plate 2 to complete the connection between the bolt 31 and the rivet nut 41. At this time, the sealing ring 7 on the cover plate 2 abuts on the mounting surface 11 of the outer shell 1, forming a sealing structure between the cover plate 2 and the outer shell 1. The cover plate 2 and the outer shell 1 form a closed internal space, completing the installation of the box.

[0054] Reference Figure 7 , and also includes a heat sink 9. The housing 1 is provided with a hollow area 13. The heat sink 9 is arranged corresponding to the hollow area 13. The hollow area 13 is used for installing the heat sink 9. In this embodiment, the heat sink 9 is an installation place for electronic devices such as insulated gate bipolar transistors (IGBTs) and printed circuit board assemblies (PCBAs); by designing the coordination between the hollow area 13 and the heat sink 9, the natural convection of air can be promoted. The hollow area 13 can effectively guide the air to flow to the surface of the heat sink 9, and at the same time help the hot air to be discharged smoothly, so that the device can better exchange heat with the external environment, maintain a lower operating temperature, thereby improving the performance of the device and extending its service life.

[0055] The housing 1 is provided with a wiring hole 10, which provides a standardized connection interface for the wiring terminal, making the wiring process simpler and faster, and reducing the installation difficulty that may be caused by improper wiring. The design of the wiring hole 10 can ensure that the electrical connection is more stable and firm, thereby avoiding safety hazards such as looseness or short circuit.

[0056] The implementation principle of the embodiment of the present application is as follows: when an explosion occurs inside the inverter, since the entire box is a sealed structure, the high-temperature gas generated by the explosion will cause the gas in the box to rise sharply, and the energy generated by the explosion will quickly act on the inner wall of the box and the cover plate 2, and the pressure is transmitted to the cover plate 2, and the cover plate 2 is then transmitted to the bolt 31, and the bolt 31 is then transmitted to the rivet nut 41. The energy of the explosion will cause the rivet nut 41 to deform along the axial direction of the bolt 31, and the originally tight connection between the connector 3 and the shell 1 will gradually loosen. The rivet nut 41 will immediately produce plastic deformation, in one direction, absorbing a certain amount of explosion energy, and in the other direction, when the rivet nut 41 produces plastic deformation, a gap will be formed between the box and the cover plate 2, so that there is a discharge channel 5 for energy, and the pressure and gas generated by the explosion are released along the discharge channel 5, thereby avoiding the damage of the box structure or the cover plate 2 being violently bounced off due to excessive pressure;

[0057] The inverter using the above-mentioned box design can improve the safety, heat dissipation performance, sealing protection, structural stability and maintenance convenience of the equipment. The multiple designs of the box, including the deformation design, sealing, heat dissipation design and stable fixing structure of the rivet bolt 31, act together on the inverter, improving its operating reliability and durability in complex and harsh environments; the deformation design of the rivet bolt 31 and the discharge channel 5 design in the box design can release explosion or excessive pressure in time when abnormal high pressure (such as short circuit, overload, etc.) occurs inside the inverter. The rivet bolt 31 deforms axially along the connecting part 3 to form a discharge channel 5, thereby preventing the box shell 1 or the cover plate 2 from rupturing due to excessive pressure or the cover plate 2 from being forcefully bounced off.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A box, characterized in that: It includes an outer shell and a cover plate, wherein the cover plate and the outer shell are fixed by a connecting piece, and the connecting piece passes through the cover plate and the outer shell and is connected to a deformable piece; the deformable piece is used to deform along the axial direction of the connecting piece during an explosion to form a discharge channel between the cover plate and the outer shell.

2. The box according to claim 1, characterized in that: The deformable member is fixed on the housing via a limiting member.

3. The box according to claim 2, characterized in that: The limiting member includes a pressing plate and a fixing nail. The pressing plate passes through the deformable member and presses the deformable member onto the shell. The pressing plate is connected to the shell through the fixing nail.

4. The box according to claim 3, characterized in that: The deformable member includes a step structure and an anti-rotation structure. The pressure plate is provided with a through hole. The step structure abuts between the shell and the pressure plate. The anti-rotation structure passes through the through hole. The anti-rotation structure is surface-to-surface matched with the through hole.

5. The box according to claim 4, characterized in that: The pressing plate includes a mounting portion and a drop portion, the through hole is provided in the drop portion, the drop portion abuts against the step structure of the deformable member, and the mounting portion is connected to the housing via the fixing nail.

6. The box according to claim 1, characterized in that: The housing is provided with a mounting surface, the mounting surface is provided with a mounting hole, and the mounting hole is used for mounting the connecting member and the deformable member.

7. The box according to claim 6, characterized in that: The cover plate is provided with a sealing ring, and the sealing ring abuts against the mounting surface.

8. The box according to claim 7, characterized in that: The cover plate is provided with a countersunk head, which is used for the installation of the connecting piece and for controlling the compression degree of the sealing ring when the cover plate is tightened.

9. The box according to claim 1, characterized in that: It also includes a radiator, the shell is provided with a hollow area, and the radiator is arranged corresponding to the hollow area.

10. The box according to claim 1, characterized in that: The shell is provided with a wiring hole.

11. An inverter, characterized in that: Comprising the box body according to any one of claims 1 to 10.

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