Explosion-proof box and inverter

Abstract

The application provides an explosion-proof box and an inverter. The explosion-proof box comprises a box body having a bottom plate, a first side plate and a second side plate; a box cover having a first edge and a second edge; a plurality of first adapters and a plurality of second adapters connected between the box body and the box cover; a first adapter is arranged between the end of the first side plate, the end of the second side plate, the end of the first edge and the end of the second edge; a second adapter is arranged between the middle of the first side plate and the middle of the first edge; and the middle of the second edge forms a reserved part. When the pressure inside the box body increases to a certain degree, the reserved part can be deformed under the action of the pressure, and the part of the second side plate close to the reserved part can also be deformed under the action of the pressure, so that a gas permeable gap is formed between the reserved part and the second side plate, the gas inside the box body is allowed to be discharged outside the box body through the gas permeable gap, the whole box cover is prevented from flying out of the box body, the safety performance is improved, and the explosion-proof effect is achieved.

Description

Technical Field

[0001] This application relates to the field of inverter technology, and in particular to an explosion-proof box and an inverter. Background Technology

[0002] Currently, to suit outdoor environments, some inverters use highly airtight enclosures to prevent dust, rainwater, and other external contaminants from entering and affecting the electronic components. However, in unexpected situations, such as overuse of the inverter causing a short circuit, the gas inside the enclosure may not be able to escape in time. This leads to increased internal pressure, which in turn generates a strong impact force on the enclosure cover, causing it to detach and fly out, compromising safety. Utility Model Content

[0003] In view of the above, it is necessary to provide an explosion-proof box to solve the above-mentioned defects.

[0004] The first aspect of this application provides an explosion-proof box, comprising: a box body having a bottom plate, two first side plates disposed opposite to and fixed to the bottom plate along a first direction, and two second side plates disposed opposite to and fixed to the bottom plate along a second direction, the first direction and the second direction having an included angle; a box cover covering the box body, the box cover having two first edges covering the two first side plates and two second edges covering the two second side plates; a plurality of first adapters and a plurality of second adapters connecting the box body and the box cover; wherein, a first adapter is disposed between the end of the first side plate, the end of the second side plate, the end of the first edge and the end of the second edge, a second adapter is disposed between the middle of the first side plate and the middle of the first edge, and a gap is formed in the middle of the second edge, the gap being used to deform when the internal pressure of the box body increases, so as to form an air-permeable gap with the second side plate.

[0005] In some embodiments, the first adapter includes a mounting plate, a first fixing plate, and a second fixing plate. The first fixing plate is parallel to a second direction, and the second fixing plate is parallel to a first direction. Both the first fixing plate and the second fixing plate are disposed on the mounting plate. The first fixing plate is connected to a first side plate, the second fixing plate is connected to a second side plate, and the mounting plate is connected to a cover.

[0006] In some embodiments, a first reinforcing rib is provided between the first fixing piece and the mounting piece; and / or, a second reinforcing rib is provided between the second fixing piece and the mounting piece.

[0007] In some embodiments, the first fixing piece is bent from the side of the mounting piece; and / or, the second fixing piece is bent from the side of the mounting piece.

[0008] In some embodiments, the mounting plate has a mounting hole, and a first waterproof nut is provided at the mounting hole on the mounting plate. The first waterproof nut is fixed on the side of the mounting plate away from the cover.

[0009] In some embodiments, the cover is recessed in a direction close to the mounting hole, a first groove is provided in the first groove, a first gasket is provided in the first groove, a first mounting member passes through the first gasket and the first groove and is connected to the mounting piece, and the first mounting member is used to fix the first fixing piece and the first side plate.

[0010] In some embodiments, the first fixing piece has a first adjustment hole extending in a second direction, through which a first mounting member passes, and the first mounting member is used to fix the first fixing piece and the first side plate; and / or, the second fixing piece has a second adjustment hole extending in a second direction, through which a second mounting member passes, and the second mounting member is used to fix the second fixing piece and the second side plate.

[0011] In some embodiments, the second adapter includes a receiving piece, a connecting piece, and a supporting piece. The connecting piece is parallel to a second direction, the supporting piece is parallel to a first direction, the supporting piece is disposed between the connecting piece and the receiving piece, the connecting piece is connected to a first side plate, and the receiving piece is connected to a box cover.

[0012] In some embodiments, the length of the first side plate in the second direction is greater than the length of the second side plate in the first direction.

[0013] A second aspect of this application provides an inverter, including electronic components and an explosion-proof enclosure as described in the first aspect, wherein the electronic components are disposed within the explosion-proof enclosure.

[0014] The explosion-proof enclosure and inverter provided in this application exhibit a relatively strong connection between the portion of the enclosure cover near the first edge and the enclosure body, while the connection between the portion of the enclosure cover near the open section and the enclosure body is relatively weak. When the pressure inside the enclosure increases to a certain level, the portion of the enclosure cover near the open section can deform under the pressure, and the portion of the second side plate near the open section can also deform under the pressure, creating a venting gap between the open section and the second side plate. This allows gas inside the enclosure to escape through the venting gap, preventing the entire enclosure cover from detaching and flying out, thus improving safety performance and achieving an explosion-proof effect. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the explosion-proof box provided in this application.

[0016] Figure 2 This is an exploded view of the explosion-proof box provided in this application.

[0017] Figure 3 This is a structural schematic diagram of the box provided in this application.

[0018] Figure 4 This is a schematic diagram showing the state of the box lid after deformation, as provided in this application.

[0019] Figure 5 An exploded view of the first adapter and housing provided for this application.

[0020] Figure 6 A schematic diagram of the structure of the first adapter provided in this application.

[0021] Figure 7 for Figure 3 A magnified view of a portion of point A in the middle.

[0022] Explanation of main component symbols

[0023] 100. Explosion-proof box;

[0024] 10. Housing; 11. Base plate; 12. First side plate; 121. First mounting hole; 13. Second side plate; 131. Second mounting hole;

[0025] 20. Box lid; 21. First edge; 22. Second edge; 221. Opening; 222. Ventilation gap; 23. First recessed portion; 24. First gasket; 25. Second recessed portion; 26. Second gasket;

[0026] 30. First adapter; 31. Mounting piece; 311. Mounting hole; 32. First fixing piece; 321. First adjustment hole; 33. Second fixing piece; 331. Second adjustment hole; 34. First reinforcing rib; 35. Second reinforcing rib;

[0027] 40. Second adapter; 41. Receiving plate; 42. Connecting plate; 43. Support plate;

[0028] 50. First waterproof nut; 51. First fixing screw;

[0029] 60. Second waterproof nut; 61. Second fixing screw;

[0030] 70. First mounting component; 71. First heavy-duty rivet; 72. First locking nut;

[0031] 80. Second mounting component; 81. Second heavy-duty rivet; 82. Second locking nut. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments.

[0033] In the description of the embodiments in this application, the words "exemplary" or "for example" are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design options. Specifically, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0034] Inverters are mostly used in outdoor environments. Considering the harsh outdoor environment, inverters have a high level of protection and airtightness to prevent dust, rain, and other factors from damaging the internal electronic components. However, when an inverter is overused, electronic components such as capacitors may short-circuit, generating gas and causing an increase in internal pressure.

[0035] Inverters in related technologies typically consist of a cabinet and a cover, which fit tightly together and are secured with multiple screws arranged circumferentially around the cover. If a short circuit occurs in the internal electronic components, generating gas, the gas inside the cabinet cannot escape quickly enough, causing the internal pressure to continuously increase. Once it reaches a certain level, it exerts a strong impact force on the cover, causing it to detach from the cabinet and fly out, posing a safety hazard. The safety performance needs improvement.

[0036] Therefore, this application first provides an explosion-proof box and an inverter, which have the technical effect of improving safety.

[0037] Figure 1 This is a structural diagram of the explosion-proof box provided in this application.

[0038] like Figure 1 As shown, this application embodiment first provides an explosion-proof enclosure 100, which is applied to an inverter. Exemplarily, the inverter includes electronic components and the explosion-proof enclosure 100. The electronic components are housed within the explosion-proof enclosure 100, which protects them. The electronic components include, but are not limited to, an inverter module, a control module, a battery management module, passive components (such as capacitors and inductors), and sensors, which can be configured according to the actual application scenario.

[0039] Figure 2 This is an exploded view of the explosion-proof box provided in this application. Figure 3 This is a structural schematic diagram of the box provided in this application.

[0040] Please refer to the following: Figure 2 and Figure 3The explosion-proof enclosure 100 includes an enclosure body 10, an enclosure cover 20, multiple first adapters 30, and multiple second adapters 40. The enclosure body 10 has an internal cavity in which electronic components are housed. The enclosure cover 20 is placed over the enclosure body 10 and seals the cavity. A sealing strip is provided between the enclosure cover 20 and the enclosure body 10 to ensure a sealed connection and achieve waterproof and dustproof functionality. Multiple first adapters 30 and multiple second adapters 40 are disposed between the enclosure cover 20 and the enclosure body 10, and securely connect the enclosure body 10 and the enclosure cover 20.

[0041] The housing 10 has a base plate 11, two first side plates 12 disposed opposite to and fixed to the base plate 11 along a first direction, and two second side plates 13 disposed opposite to and fixed to the base plate 11 along a second direction, with an included angle between the first and second directions. The base plate 11, the two first side plates 12, and the two second side plates 13 enclose a receiving cavity. In this embodiment, the first direction is exemplified by the X-axis in the figure, and the second direction is exemplified by the Y-axis in the figure. The thickness direction of the housing 10 is defined as the third direction, which is exemplified by the Z-axis direction in the figure.

[0042] Figure 4 A schematic diagram showing the state of the second edge and the second side plate after deformation, as provided in this application.

[0043] Please refer to the following: Figure 4 The lid 20 has two first edges 21 covering two first side panels 12 and two second edges 22 covering two second side panels 13. The two first side panels 12 are distributed corresponding to the two first edges 21, and the projection of the first edge 21 in a third direction covers the corresponding first side panel 12. The two second side panels 13 are distributed corresponding to the two second edges 22, and the projection of the second edge 22 in a third direction covers the corresponding second side panel 13.

[0044] A first adapter 30 is provided between the ends of the first side plate 12, the second side plate 13, the first edge 21, and the second edge 22. A second adapter 40 is provided between the middle of the first side plate 12 and the middle of the first edge 21. The connection between the first side plate 12 and the second side plate 13 is fixedly connected to the lid 20 via the first adapter 30, and the first side plate 12 is also fixedly connected to the lid 20 via the second adapter 40.

[0045] A gap 221 is formed in the middle of the second edge 22. The gap 221 is used to deform when the pressure inside the box 10 increases, so as to form a breathable gap 222 between it and the second side plate 13.

[0046] It is understandable that, for the entire lid 20, the connection strength between the portion of the lid 20 near the first edge 21 and the box body 10 is relatively high, while the connection strength between the portion of the lid 20 near the opening 221 and the box body 10 is relatively low. When the pressure inside the box body 10 increases to a certain level, the portion of the lid 20 near the opening 221 can deform under the pressure. Simultaneously, the portion of the second side plate 13 near the opening 221 can also deform under the pressure, creating a ventilation gap 222 between the opening 221 and the second side plate 13. This allows gas inside the box body 10 to escape through the ventilation gap 222, preventing the entire lid 20 from detaching from the box body 10 and flying out, thus improving safety performance and achieving an explosion-proof effect.

[0047] In some embodiments, the housing 10 is generally rectangular, with a first direction being the width direction of the housing 10 and a second direction being the length direction of the housing 10. A first side panel 12 is parallel to the second direction, and a second side panel 13 is parallel to the first direction. The length of the first side panel 12 in the second direction is greater than the length of the second side panel 13 in the first direction. It can be understood that the first side panel 12 is the long side of the housing 10, and the second side panel 13 is the short side of the housing 10. The connection point between the end of the first side panel 12 and the side panel of the second edge 22 is the corner of the housing 10.

[0048] Correspondingly, the lid 20 is rectangular in shape, with the first edge 21 parallel to the second direction and the second edge 22 parallel to the first direction. The length of the first edge 21 in the second direction is greater than the length of the second edge 22 in the first direction. It can be understood that the first edge 21 is the long side of the lid 20, the second edge 22 is the short side of the lid 20, and the ends of both the first edge 21 and the second edge 22 are the corners of the lid 20.

[0049] Thus, the longer edge portions of the lid 20 and the body 10 are fixedly connected by the first adapter 30 and the second adapter 40 to increase the overall connection strength. The middle portion of the shorter edge portion of the lid 20 is not provided with the second adapter 40 to reduce the local connection strength. While ensuring the connection stability between the lid 20 and the body 10, a certain range is reserved between the lid 20 and the body 10 to form a ventilation gap 222, which can ensure both airtightness and sealing, and achieve explosion-proof effect.

[0050] It is worth noting that in other embodiments, the box body 10 may also adopt other shapes such as waist shape and is not limited to rectangle, and the box cover 20 may also be configured accordingly, as long as both have sides that are arranged opposite to each other in the first direction and the second direction. This application does not impose any restrictions on this.

[0051] Figure 5An exploded view of the first adapter and housing provided for this application. Figure 6 A schematic diagram of the structure of the first adapter provided in this application.

[0052] Please refer to the following: Figure 5 and Figure 6 In some embodiments, the first adapter 30 is made of sheet metal SGCC (hot-dip galvanized steel), which has excellent corrosion resistance, good processing performance, and high strength and toughness. There are four first adapters 30, distributed at the four corners of the housing 10. Each first adapter 30 includes a mounting plate 31, a first fixing plate 32, and a second fixing plate 33. The first fixing plate 32 is parallel to a second direction, and the second fixing plate 33 is parallel to a first direction. Both the first fixing plate 32 and the second fixing plate 33 are mounted on the mounting plate 31. The first fixing plate 32 is connected to the first side plate 12, the second fixing plate 33 is connected to the second side plate 13, and the mounting plate 31 is connected to the housing cover 20.

[0053] Thus, the first fixing piece 32, the second fixing piece 33, and the receiving piece 41 can be used to connect the first side plate 12, the second side plate 13, and the box cover 20 located in different directions, so as to achieve the effect of installation and fixation.

[0054] For example, the mounting piece 31 is generally rectangular, with a first fixing piece 32 located on the side of the mounting piece 31 near the first side plate 12, and a second fixing piece 33 located on the side of the mounting piece 31 near the second side plate 13. The first fixing piece 32 is bent from the side of the mounting piece 31. The second fixing piece 33 is bent from the side of the mounting piece 31.

[0055] In this way, the first fixing piece 32, the second fixing piece 33 and the mounting piece 31 can be formed by bending a single integral component, which reduces material costs, simplifies the processing technology and improves processing and production efficiency.

[0056] In some embodiments, a first reinforcing rib 34 is provided between the first fixing piece 32 and the mounting piece 31. Exemplarily, the first reinforcing rib 34 is triangular, and there is an included angle between the first reinforcing rib 34, the first fixing piece 32 and the mounting piece 31. The first fixing piece 32 and the mounting piece 31 are respectively welded and fixed to the first reinforcing rib 34.

[0057] It is understandable that the first reinforcing rib 34 can enhance the connection strength between the first fixing piece 32 and the mounting piece 31, prevent the first fixing piece 32 and the mounting piece 31 from bending after installation and fixing, thereby improving the connection strength between the box body 10 and the box cover 20 at the corners.

[0058] In some embodiments, a second reinforcing rib 35 is provided between the second fixing piece 33 and the mounting piece 31. Exemplarily, the second reinforcing rib 35 is triangular, and there is an included angle between the second reinforcing rib 35, the second fixing piece 33 and the mounting piece 31. The second fixing piece 33 and the mounting piece 31 are respectively welded and fixed to the second reinforcing rib 35.

[0059] It is understandable that the second reinforcing rib 35 can enhance the connection strength between the second fixing piece 33 and the mounting piece 31, prevent the second fixing piece 33 and the mounting piece 31 from bending after installation and fixing, thereby improving the connection strength between the box body 10 and the box cover 20 at the corners.

[0060] In some embodiments, the mounting plate 31 has a mounting hole 311, and a first waterproof nut 50 is provided at the mounting hole 311 on the mounting plate 31. The first waterproof nut 50 is riveted and fixed to the side of the mounting plate 31 away from the cover 20. The mounting hole 311 is for the first fixing screw 51 to pass through, and the first waterproof nut 50 is for the first fixing screw 51 to be threaded.

[0061] In some embodiments, the first fixing piece 32 has a first adjusting hole 321 extending along a second direction, through which a first mounting member 70 passes. The first mounting member 70 is used to fix the first fixing piece 32 to the first side plate 12. For example, the number of first adjusting holes 321 is 2, and the two first adjusting holes 321 are arranged side by side at intervals along a third direction.

[0062] The first adjustment hole 321 extends in the second direction, and the relative position between the first fixing piece 32 and the first mounting piece 70 can be adjusted in the second direction, reducing the risk of the first adapter 30 failing to be fixed due to misalignment of its installation position and improving installation efficiency.

[0063] In some embodiments, the second fixing piece 33 has a second adjusting hole 331 extending along a first direction, through which a second mounting member 80 passes. The second mounting member 80 is used to fix the second fixing piece 33 to the second side plate 13. For example, the number of second adjusting holes 331 is two, and the two second adjusting holes 331 are arranged side by side at intervals along a third direction.

[0064] By extending the second adjustment hole 331 in the first direction, the relative position between the second fixing piece 33 and the second mounting piece 80 can be adjusted in the first direction, reducing the risk of the first adapter 30 failing to be fixed due to misalignment of its installation position and improving installation efficiency.

[0065] In some embodiments, the second adapter 40 is made of sheet metal SGCC (hot-dip galvanized steel), which has excellent corrosion resistance, good processing performance, and high strength and toughness. There are two second adapters 40, each located at the center of one of the two first side plates 12. Each second adapter 40 includes a receiving piece 41, a connecting piece 42, and a supporting piece 43. The connecting piece 42 is parallel to a second direction, and the supporting piece 43 is parallel to a first direction. The supporting piece 43 is disposed between the connecting piece 42 and the receiving piece 41. The connecting piece 42 is connected to the first side plate 12, and the receiving piece 41 is connected to the cover 20.

[0066] For example, the receiving piece 41 is generally rectangular. There are two support pieces 43, each formed by bending from the receiving piece 41. There are also two connecting pieces 42, each formed by bending from the side of the support piece 43, and the connecting pieces 42 are bolted to the first side plate 12. In this way, the second adapter 40 can be integrally molded, saving production materials and improving production efficiency.

[0067] In some embodiments, the cover 20 is made of aluminum, which has the advantages of excellent heat dissipation and light weight. The cover 20 is provided with a plurality of first recesses 23 corresponding to the mounting holes 311. The first recesses 23 are recessed towards the mounting holes 311, and a through hole for the first fixing screw 51 to pass through is opened in the center of each first recess 23. A first washer 24 is provided inside the first recess 23, and the first washer 24 is annular. The first fixing screw 51 passes through the first washer 24 and the first recess 23, and is connected to the first waterproof nut 50.

[0068] For example, the first fixing screw 51, the first waterproof nut 50, and the first washer 24 are all made of stainless steel. The first fixing screw 51 passes through the first washer 24, the cover 20, and the mounting plate 31 in sequence, and is connected by the thread of the first waterproof nut 50.

[0069] When installing the cover 20, it can be placed on the housing 10, and then the first fixing screw 51 can be directly passed through the first washer 24, the cover 20, and the mounting plate 31, and screwed into the first waterproof nut 50. This installation method is simple and quick, improving assembly efficiency. Furthermore, the connection between the first fixing screw 51 and the first waterproof nut 50 is detachable; when the user needs to open the cover 20, the first fixing screw 51 can be directly unscrewed from the cover 20, facilitating future inspection and maintenance of the equipment.

[0070] The first groove 23 accommodates the first gasket 24, which can reduce the damage to the appearance integrity of the cover 20 caused by the first gasket 24, and strengthen the mechanical hardness of the connection between the cover 20 and the first fixing screw 51, thereby reducing the risk of deformation of the corners of the cover 20 when the pressure inside the box 10 increases.

[0071] By using a first washer 24 between the cover 20 and the first fixing screw 51, the hardness of the cover 20 can be compensated, the connection strength between the cover 20 and the box body 10 at the corners can be improved, and the cover 20 can be prevented from being pulled off directly from the first groove 23 when the pressure inside the box body 10 increases, thus improving safety performance.

[0072] By riveting the first waterproof nut 50 to the mounting plate 31 and connecting it with the first fixing screw 51, the connection strength is improved, and the internal threads of the first waterproof nut 50 are prevented from being damaged due to the pulling force of the first fixing screw 51 when the pressure inside the housing 10 increases.

[0073] Figure 7 for Figure 3 A magnified view of a portion of point A in the middle.

[0074] Please refer to the following: Figure 7 In some embodiments, the cover 20 is provided with a plurality of second recesses 25 corresponding to the receiving piece 41, the second recesses 25 being recessed towards the receiving piece 41. A second gasket 26 is provided within the second recess 25, the second gasket 26 being annular. A second waterproof nut 60 is riveted to the side of the receiving piece 41 away from the cover 20, the second waterproof nut 60 being equipped with a second fixing screw 61, and a through hole is provided in the center of the second recess 25 for the second fixing screw 61 to pass through. The second fixing screw 61 passes through the second gasket 26, the cover 20, and the receiving piece 41, and is threadedly connected to the second waterproof nut 60. Exemplarily, the second fixing screw 61, the second waterproof nut 60, and the second gasket 26 are all made of stainless steel.

[0075] In some embodiments, the first side plate 12 is provided with a plurality of first mounting holes 121, the positions of the first mounting holes 121 corresponding to the positions of the first adjustment holes 321 of the first fixing piece 32 installed on the first side plate 12, so as to allow the first mounting member 70 to pass through the first mounting holes 121 and the first adjustment holes 321 at the same time.

[0076] For example, the first mounting component 70 can be a first heavy-duty rivet 71, which is press-fitted to the first mounting hole 121 of the first side plate 12. The first heavy-duty rivet 71 is equipped with a first locking nut 72. The first heavy-duty rivet 71 passes through the first mounting hole 121 and the first adjusting hole 321 in sequence, and is threaded to the first locking nut 72 to achieve a fixed connection between the first fixing piece 32 and the first side plate 12. Furthermore, when the first heavy-duty rivet 71 and the first locking nut 72 are loosened, the first heavy-duty rivet 71 can move in the first adjusting hole 321 along the second direction, thereby adjusting the position of the first fixing piece 32 in the second direction.

[0077] In some embodiments, the second side plate 13 is provided with a plurality of second mounting holes 131, the positions of the second mounting holes 131 corresponding to the positions of the second adjustment holes 331 of the second fixing piece 33 installed on the second side plate 13, so as to allow the second mounting member 80 to pass through the second mounting holes 131 and the second adjustment holes 331 at the same time.

[0078] For example, the second mounting component 80 can be a second heavy-duty rivet 81, which is press-fitted to the second mounting hole 131 of the second side plate 13. The second heavy-duty rivet 81 is equipped with a second locking nut 82. The second heavy-duty rivet 81 passes through the second mounting hole 131 and the second adjusting hole 331 in sequence, and is threaded to the second locking nut 82 to achieve a fixed connection between the second fixing piece 33 and the second side plate 13. Furthermore, when the second heavy-duty rivet 81 and the second locking nut 82 are loosened, the second heavy-duty rivet 81 can move in the second adjusting hole 331 along a first direction, thereby adjusting the position of the second fixing piece 33 in the first direction.

[0079] It is understandable that the first adapter 30 is fixed to the first side plate 12 or the second side plate 13 by heavy-duty rivets. The large head of the heavy-duty rivets can be used to reduce the local stress generated on the housing 10 when subjected to a large impact force (such as in the event of an explosion or in a deflation test), thereby preventing the heavy-duty rivets from being blown off and flying out, thus improving safety performance.

[0080] This application also provides an inverter. The inverter includes electronic components and an explosion-proof enclosure 100 as described in any of the above embodiments. The electronic components are housed within the explosion-proof enclosure 100, which protects them. The electronic components include, but are not limited to, an inverter module, a control module, a battery management module, passive components (such as capacitors and inductors), and sensors, and can be configured according to the actual application scenario.

[0081] The strength of the four corners of the enclosure 10 and the cover 20 is reinforced by multiple first adapters 30, and the strength of the long side of the enclosure 10 and the long side of the cover 20 is reinforced by multiple second adapters 40, so that the mechanical strength of the four corners of the inverter is greater than that of the middle of the short side of the inverter, and the mechanical strength of the long side of the inverter is greater than that of the middle of the short side of the inverter.

[0082] When the internal air pressure of the inverter continues to increase, the middle of the short side of the cover 20 can deform first with the short side of the enclosure 10 to form a ventilation gap 222. The ventilation gap 222 is used to discharge gas and energy to achieve an explosion-proof effect. At the same time, the long side and corners of the cover 20 can still be connected to the enclosure 10 to prevent the cover 20 from being blown away from the enclosure 10 and reduce safety hazards.

[0083] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments described above should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application.

Claims

1. An explosion-proof box, characterized in that, include: The enclosure has a bottom plate, two first side plates that are arranged opposite to each other and fixed to the bottom plate along a first direction, and two second side plates that are arranged opposite to each other and fixed to the bottom plate along a second direction, wherein there is an angle between the first direction and the second direction; A lid is provided on the box body, the lid having two first edges covering the two first side panels and two second edges covering the two second side panels; Multiple first adapters and multiple second adapters are connected between the housing and the lid; A first adapter is provided between the end of the first side plate, the end of the second side plate, the end of the first edge, and the end of the second edge. A second adapter is provided between the middle of the first side plate and the middle of the first edge. A void is formed in the middle of the second edge. The void is used to deform when the pressure inside the box increases, so as to form a breathable gap with the second side plate.

2. The explosion-proof box as described in claim 1, characterized in that, The first adapter includes a mounting plate, a first fixing plate, and a second fixing plate. The first fixing plate is parallel to the second direction, and the second fixing plate is parallel to the first direction. Both the first fixing plate and the second fixing plate are disposed on the mounting plate. The first fixing plate is connected to the first side plate, the second fixing plate is connected to the second side plate, and the mounting plate is connected to the box cover.

3. The explosion-proof box as described in claim 2, characterized in that, A first reinforcing rib is provided between the first fixing piece and the mounting piece; and / or, a second reinforcing rib is provided between the second fixing piece and the mounting piece.

4. The explosion-proof box as described in claim 2, characterized in that, The first fixing piece is bent from the side of the mounting piece; and / or, the second fixing piece is bent from the side of the mounting piece.

5. The explosion-proof box as described in claim 2, characterized in that, The mounting plate has a mounting hole, and a first waterproof nut is provided at the mounting hole on the mounting plate. The first waterproof nut is fixed to the side of the mounting plate away from the box cover.

6. The explosion-proof box as described in claim 5, characterized in that, The cover is recessed in a first groove toward the mounting hole. A first gasket is provided in the first groove. A first mounting member passes through the first gasket and the first groove and is connected to the mounting piece. The first mounting member is used to fix the first fixing piece to the first side plate.

7. The explosion-proof box as described in claim 2, characterized in that, The first fixing piece has a first adjustment hole extending along the second direction, through which a first mounting member passes, and the first mounting member is used to fix the first fixing piece to the first side plate; and / or, The second fixing piece has a second adjustment hole extending along the second direction, through which the second mounting member passes, and the second mounting member is used to fix the second fixing piece to the second side plate.

8. The explosion-proof box as described in claim 1, characterized in that, The second adapter includes a receiving piece, a connecting piece, and a supporting piece. The connecting piece is parallel to the second direction, the supporting piece is parallel to the first direction, the supporting piece is disposed between the connecting piece and the receiving piece, the connecting piece is connected to the first side plate, and the receiving piece is connected to the box cover.

9. The explosion-proof box as described in claim 1, characterized in that, The length of the first side plate in the second direction is greater than the length of the second side plate in the first direction.

10. An inverter, characterized in that, It includes electronic components and an explosion-proof enclosure as described in any one of claims 1 to 9, wherein the electronic components are disposed within the explosion-proof enclosure.

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