Explosion-proof case and electronic equipment

Abstract

The utility model discloses an explosion-proof cabinet, and the cabinet comprises a cabinet cover which comprises a plurality of first connecting parts; the box body comprises a plurality of second connecting parts, the plurality of second connecting parts are in one-to-one correspondence with the plurality of first connecting parts, and the box body and the box cover are combined to form a containing space; and the plurality of connecting assemblies comprise at least two connecting assemblies with different strengths, one end of any connecting assembly is connected with the box cover through a first connecting part, and the other end of the connecting assembly is connected with the box body through a second connecting part corresponding to the first connecting part. According to the anti-explosion case provided by the invention, the cover plate can be prevented from flying out after explosion caused by failure of internal components of electronic equipment such as a string inverter and an energy storage converter.

Description

Technical Field

[0001] The utility model relates to the technical field of converters, in particular to an explosion-proof chassis and electronic equipment. Background Art

[0002] Existing electronic devices such as string inverters and energy storage converters have a large number of built-in electrolytic capacitors, film capacitors and other electronic components. These components may fail during operation and further release some flammable gases such as hydrogen and methane. When these flammable gases accumulate to a certain extent inside the electronic equipment, they are very likely to cause an explosion. The excessive power of the explosion may cause the chassis cover of the electronic equipment to fly out, posing a certain safety hazard to other objects or personnel. Summary of the invention

[0003] The purpose of the utility model is to provide a technical solution to effectively avoid the problem of cover flying out after explosion caused by failure of internal components of electronic equipment such as string inverters and energy storage converters.

[0004] Based on the above objectives, the present application provides an explosion-proof chassis, which includes:

[0005] A box cover, the box cover includes a plurality of first connecting parts;

[0006] A box body, the box body includes a plurality of second connection parts, the plurality of second connection parts correspond to the plurality of first connection parts one by one, and the box body and the box cover are combined to form a receiving space;

[0007] A plurality of connection components, including at least two connection components with different strengths, one end of any connection component is connected to the box cover through a first connection part, and the other end of the connection component is connected to the box body through a second connection part corresponding to the first connection part.

[0008] Furthermore, the plurality of connection components include a first type of connection components and a second type of connection components, and the strength of the first type of connection components is greater than the strength of the second type of connection components.

[0009] Further, the connection assembly includes a first type of screw, and the first type of screw is used to connect the connection assembly to the second connection portion of the box;

[0010] The shank thickness of the first type of screws in the first type of connection assembly is greater than the shank thickness of the first type of screws in the second type of connection assembly.

[0011] Further, the connection assembly includes a first type of screw, and the first type of screw is used to connect the connection assembly to the second connection portion of the box;

[0012] The shank diameter of the first type of screw in the first type of connection assembly is greater than the shank diameter of the first type of screw in the second type of connection assembly.

[0013] Furthermore, at least two connection components with different strengths include a third type of connection component, a fourth type of connection component and a fifth type of connection component, the strength of the third type of connection component is greater than the strength of the fourth type of connection component, and the strength of the fourth type of connection component is greater than the strength of the fifth type of connection component.

[0014] Further, the connection assembly includes a first type of screw, and the first type of screw is used to connect the connection assembly to the second connection portion of the box;

[0015] The shank thickness of the first type of screw in the third type of connection assembly is greater than the shank thickness of the first type of screw in the fourth type of connection assembly;

[0016] The shank thickness of the first type of screws in the fourth type of connection assembly is greater than the shank thickness of the first type of screws in the fifth type of connection assembly.

[0017] Further, the connection assembly includes a first type of screw, and the first type of screw is used to connect the connection assembly to the second connection portion of the box;

[0018] The shank diameter of the first type of screw in the third type of connection assembly is greater than the shank diameter of the first type of screw in the fourth type of connection assembly;

[0019] The shank diameter of the first type of screw in the fourth type of connection assembly is greater than the shank diameter of the first type of screw in the fifth type of connection assembly.

[0020] Furthermore, the connection component includes:

[0021] Connecting columns;

[0022] A connecting platform, which is fixedly connected to one end of the connecting column and extends radially along the connecting column;

[0023] At least two first-type screws, the first-type screws are used to screw the second connecting portion of the box body to the connecting platform;

[0024] The second type of screws are used to screw the first connecting portion of the box cover to an end of the connecting column away from the connecting platform.

[0025] Furthermore, the connection assembly includes two first type screws, and the two first type screws are arranged at positions that are substantially symmetrical to the connection column and close to the edge of the connection platform.

[0026] The present application also provides an electronic device, which includes the explosion-proof chassis as described above.

[0027] According to the above description, the explosion-proof chassis provided in the embodiment of the present application includes at least two connection components with different strengths. In this way, once the internal components of the chassis fail and the gas accumulates inside the chassis, the connection component with lower strength will reach its bearing limit first, while the remaining parts connected by the connection components with higher strength can still maintain a reliably connected connection. In this way, the chassis can be prevented from exploding and the cover of the chassis can be prevented from flying out and posing a threat to other objects or personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of an explosion-proof chassis provided by the utility model;

[0029] Figure 2 A partial side cross-sectional schematic diagram of an explosion-proof chassis provided by the utility model;

[0030] Figure 3 A schematic diagram of a connection assembly provided by the utility model;

[0031] Figure 4 A schematic diagram of a standard screw provided by the utility model as a reference for strength comparison;

[0032] Figure 5 A schematic diagram of a first type of screw with a reduced shank diameter provided by the utility model;

[0033] Figure 6 A schematic diagram of a first type of screw with a reduced shank thickness provided by the utility model;

[0034] Figure 7 A schematic diagram of a first type screw of the second type provided by the utility model with a weakened groove processed at the shank of the screw;

[0035] Figure 8 for Figure 7 Axonometric view of

[0036] Reference numerals: explosion-proof case 100 , case body 11 , case cover 12 , connection assembly 13 , connection column 131 , connection platform 132 , first type screw 133 , second type screw 134 , first connection portion 101 . DETAILED DESCRIPTION

[0037] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings, but these embodiments do not limit the present invention. Structural, methodological, or functional changes made by ordinary technicians in the field based on these embodiments are all included in the protection scope of the present invention.

[0038] The purpose of the utility model is to provide a technical solution to effectively avoid the problem of cover flying out after explosion caused by failure of internal components of electronic equipment such as string inverters and energy storage converters. Figure 1 and Figure 2 The embodiment of the present application provides an explosion-proof case 100. The explosion-proof case 100 provided in the embodiment of the present application includes a case body 11, a case cover 12 and a plurality of connection components 13.

[0039] The box cover 12 includes a plurality of first connection parts 101, and the box body 11 includes a plurality of second connection parts (not shown), and the plurality of second connection parts correspond to the plurality of first connection parts 101 one by one, and the box body 11 and the box cover 12 are combined to form a receiving space. One end of any connecting component 13 is connected to the box cover 12 through a first connection part 101, and the other end of the connecting component 13 is connected to the box body 11 through a second connection part corresponding to the first connection part 101.

[0040] In the explosion-proof case 100 provided in the embodiment of the present application, the plurality of connection components 13 include at least two connection components 13 with different strengths. In this way, once the internal components of the case 11 fail and the gas accumulates inside the case 11, the connection component 13 with lower strength will reach its bearing limit first, and then the part between the case 11 and the cover 12 connected by the connection component 13 with lower strength will fail before the other connection parts, and the gas accumulated in the case 11 can escape from the failed connection. That is, when the part connected by the connection component 13 with lower strength fails, the other parts connected by the connection component 13 with higher strength can still maintain reliable connection, so that the gas accumulated in the case 11 can be released in the form of local defects, preventing the case 11 from exploding and avoiding the cover 12 from flying out when exploding to threaten other objects or people.

[0041] like Figure 3 As shown, as an optional implementation, the connection assembly 13 provided in the embodiment of the present application includes a connection column 131 , a connection platform 132 , a first type of screw 133 and a second type of screw 134 .

[0042] The connecting platform 132 is fixedly connected to one end of the connecting column 131, and the connecting platform 132 extends radially along the connecting column 131. The first type screw 133 is used to screw the second connecting portion of the box body 11 to the connecting platform 132, and the second type screw 134 is used to screw the first connecting portion 101 of the box cover 12 to one end of the connecting column 131 away from the connecting platform 132.

[0043] As an optional implementation, the connection assembly 13 includes at least two first type screws 133. In the embodiment of the present application, the connection assembly 13 includes two first type screws 133. The two first type screws 133 are arranged at positions that are substantially symmetrical to the connection column 131 and close to the edge of the connection platform 132. Specifically, in the embodiment of the present application, the connection assembly 13 includes two first type screws 133, the two first type screws 133 are arranged close to the edge of the connection platform 132, and the two first type screws 133 are symmetrical with the axis of the connection column 131 as the axis of symmetry, and the two first type screws 133 are substantially symmetrical.

[0044] As an optional implementation, at least part of the connecting components 13 can use the first type screws 133 with lower strength, and at least part of the connecting components 13 can use the first type screws 133 with higher strength. In this way, connecting components 13 with different strengths can be constructed.

[0045] As an optional implementation, the first type of screws 133 with different strengths may be designed by selecting different materials for the screws.

[0046] As another optional implementation, the handle portion of the first type screw 133 may be designed so as to obtain the first type screw 133 with different strengths.

[0047] It is easy to understand that the strength of the first type screws 133 in different connection components 13 is relative. Figure 4 As shown, the present application exemplarily provides an exaggerated screw as a strength comparison reference of the first type screw 133, and the screw used as a strength comparison reference is called a standard screw. Figure 4 As shown, the shank diameter of the standard screw is marked as "a" and the shank thickness of the standard screw is marked as "b".

[0048] like Figure 5 As shown, as an optional implementation, the embodiment of the present application provides a first type screw 133 with a reduced shank diameter. The shank diameter of the first type screw 133 is smaller than the shank diameter of the standard screw. It is easy to understand that in this implementation, the strength of the first type screw 133 is lower than the strength of the standard screw used as a reference.

[0049] like Figure 6 As shown, as another optional implementation, the embodiment of the present application provides a first type screw 133 with a reduced shank thickness. The shank thickness of the first type screw 133 is less than the shank thickness of the standard screw. It is easy to understand that in this implementation, the strength of the first type screw 133 is lower than the strength of the standard screw used as a reference.

[0050] Combination Figure 7 and Figure 8 It is also possible to machine a weakening groove in the shank of the screw so that the strength of the first type screw 133 is lower than that of the standard screw used as a reference.

[0051] It is easy to understand that the first type screw 133 with reduced strength relative to the standard screw can also be designed by a combination of one or more of the following methods: reducing the handle diameter, reducing the handle thickness, and processing a weakening groove in the handle.

[0052] It is easy to understand that the first type screw 133 with enhanced strength relative to the standard screw can also be designed by one or more combinations of the following methods: increasing the handle diameter, increasing the handle thickness.

[0053] It should be noted that, in the embodiments of the present application, only for the convenience of explanation, a standard screw is provided as a reference for strength comparison. In actual applications, only two first-type screws 133 can be compared to determine the strength difference between the two first-type screws 133.

[0054] In addition, in addition to specially customizing the first type screws 133, screws of different specifications that meet relevant industrial design standards can also be selected as the first type screws 133. In this way, first type screws 133 of different strengths can also be obtained.

[0055] It should be noted that, in the embodiment of the present application, the different strengths of the connecting assembly 13 are achieved by selecting the first type screws 133 of different strengths. This design does not reduce the reliability of the connection between the box cover 12 and the connecting assembly 13. When an explosion occurs, the connection between the first type screws 133 with lower strength and the box body 11 fails, resulting in partial separation of the box body 11 and the box cover 12, while the connecting parts of the box cover 12 remain connected to the connecting assembly 13, which can prevent the box cover 12 from flying out due to the explosion and avoid damage to other objects or personnel. In addition, in the embodiment of the present application, any connecting assembly 13 includes two first type screws 133. In this way, a reliable connection between the connecting assembly 13 and the box body 11 can be ensured, and when the connection of some connecting assemblies 13 fails, the connecting assemblies 13 in the remaining parts can still ensure the connection between the box body 11 and the box cover 12.

[0056] In order to further illustrate the explosion-proof chassis 100 provided in the embodiment of the present application, the following will be described in combination with specific application scenarios, as follows:

[0057] Embodiment 1

[0058] As an optional implementation, the explosion-proof chassis 100 includes a first type connection component and a second type connection component with different strengths, wherein the strength of the first type connection component is greater than the strength of the second type connection component.

[0059] The connection assembly 13 includes a first type screw 133, and the first type screw 133 is used to connect the connection assembly 13 to the second connection portion of the box body 11. By selecting different first type screws 133, it is possible to design connection assemblies 13 with different strengths.

[0060] As an optional implementation, the shank thickness of the first type screw 133 in the first type connection assembly is greater than the shank thickness of the first type screw 133 in the second type connection assembly, and / or the shank diameter of the first type screw 133 in the first type connection assembly is greater than the shank diameter of the first type screw 133 in the second type connection assembly. Specifically, as an optional implementation, only the first type screw 133 in the first type connection assembly may be strengthened, or only the first type screw 133 in the second type connection assembly may be weakened.

[0061] According to the above description, in the first embodiment, the explosion-proof chassis 100 includes two types of connection components 13, and the two types of connection components 13 have different strengths, which can effectively prevent the box cover 12 from flying out when the box body 11 explodes, avoiding threats to other objects or personnel.

[0062] Furthermore, the first type of screws 133 in the first type of connection assembly can be treated to strengthen their strength, and the first type of screws 133 in the second type of connection assembly can be treated to weaken their strength. In this way, the strength difference between the first type of connection assembly and the second type of connection assembly is further expanded. It is easy to understand that if the difference in strength levels between the two types of connection assemblies 13 is greater, when the second type of connection assembly with lower strength reaches its bearing limit, the first type of connection assembly with higher strength still has sufficient pressure margin, thereby ensuring that when the second type of connection assembly fails to connect, the first type of connection assembly can still ensure a reliable connection between the box body 11 and the box cover 12, which can effectively prevent the box cover 12 from flying out when the box body 11 explodes, avoiding threats to other objects or personnel.

[0063] Embodiment 2

[0064] As an optional implementation, the explosion-proof chassis 100 includes a third type connection component, a fourth type connection component and a fifth type connection component with different strengths, the strength of the third type connection component is greater than the strength of the fourth type connection component, and the strength of the fourth type connection component is greater than the strength of the fifth type connection component.

[0065] The connection assembly 13 includes a first type screw 133, and the first type screw 133 is used to connect the connection assembly 13 to the second connection portion of the box body 11. By selecting different first type screws 133, it is possible to design connection assemblies 13 with different strengths.

[0066] As an optional implementation, the shank thickness of the first type of screw 133 in the third type of connection assembly is greater than the shank thickness of the first type of screw 133 in the fourth type of connection assembly, and / or the shank diameter of the first type of screw 133 in the third type of connection assembly is greater than the shank diameter of the first type of screw 133 in the fourth type of connection assembly;

[0067] As an optional implementation, the shank thickness of the first type of screw 133 in the fourth type of connecting assembly is greater than the shank thickness of the first type of screw 133 in the fifth type of connecting assembly, and / or the shank diameter of the first type of screw 133 in the fourth type of connecting assembly is greater than the shank diameter of the first type of screw 133 in the fifth type of connecting assembly.

[0068] According to the above description, in the second embodiment of the present application, the explosion-proof chassis 100 includes three connection components 13 with different strengths. In this way, there is a large strength difference between the third type of connection component and the fifth type of connection component, which can ensure that when the fifth type of connection component fails, the third type of connection component can still ensure a reliable connection between the box body 11 and the box cover 12, which can effectively prevent the box cover 12 from flying out when the box body 11 explodes, thereby avoiding threats to other objects or personnel.

[0069] The embodiment of the present application also provides an electronic device, which includes the explosion-proof chassis 100 provided in the embodiment of the present application. The electronic device can be an inverter, an energy storage inverter, a combiner box, etc.

[0070] According to the above description, the explosion-proof chassis 100 provided in the embodiment of the present application can effectively prevent the box cover 12 from flying out when the box body 11 explodes, thereby avoiding threats to other objects or personnel.

[0071] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. An explosion-proof chassis, characterized in that: The explosion-proof chassis comprises: A box cover, the box cover comprising a plurality of first connecting parts; A box body, the box body comprising a plurality of second connection parts, the plurality of second connection parts corresponding to the plurality of first connection parts one by one, the box body and the box cover are combined to form a receiving space; A plurality of connection components, wherein the plurality of connection components include at least two connection components with different strengths, one end of any of the connection components is connected to the box cover via a first connection portion, and the other end of the connection component is connected to the box body via a second connection portion corresponding to the first connection portion.

2. The explosion-proof chassis according to claim 1, characterized in that: The plurality of connection components include a first type of connection components and a second type of connection components, and the strength of the first type of connection components is greater than the strength of the second type of connection components.

3. The explosion-proof chassis according to claim 2, characterized in that: The connecting assembly includes a first type of screw, and the first type of screw is used to connect the connecting assembly to the second connecting portion of the box; The shank thickness of the first type of screws in the first type of connection assembly is greater than the shank thickness of the first type of screws in the second type of connection assembly.

4. The explosion-proof chassis according to claim 2, characterized in that: The connecting assembly includes a first type of screw, and the first type of screw is used to connect the connecting assembly to the second connecting portion of the box; The shank diameter of the first type of screw in the first type of connection assembly is greater than the shank diameter of the first type of screw in the second type of connection assembly.

5. The explosion-proof chassis according to claim 1, characterized in that: The at least two connection components with different strengths include a third type connection component, a fourth type connection component and a fifth type connection component. The strength of the third type connection component is greater than the strength of the fourth type connection component, and the strength of the fourth type connection component is greater than the strength of the fifth type connection component.

6. The explosion-proof chassis according to claim 5, characterized in that: The connecting assembly includes a first type of screw, and the first type of screw is used to connect the connecting assembly to the second connecting portion of the box; The shank thickness of the first type of screw in the third type of connection assembly is greater than the shank thickness of the first type of screw in the fourth type of connection assembly; The shank thickness of the first type of screws in the fourth type of connection assembly is greater than the shank thickness of the first type of screws in the fifth type of connection assembly.

7. The explosion-proof chassis according to claim 5, characterized in that: The connecting assembly includes a first type of screw, and the first type of screw is used to connect the connecting assembly to the second connecting portion of the box; The shank diameter of the first type of screw in the third type of connection assembly is greater than the shank diameter of the first type of screw in the fourth type of connection assembly; The shank diameter of the first type of screw in the fourth type of connection assembly is greater than the shank diameter of the first type of screw in the fifth type of connection assembly.

8. The explosion-proof chassis according to claim 3 or 4, characterized in that: The connection component comprises: Connecting columns; A connecting platform, the connecting platform is fixedly connected to one end of the connecting column, and the connecting platform extends along the radial direction of the connecting column; at least two screws of the first type, wherein the screws of the first type are used to screw the second connection portion of the box body to the connection platform; The second type of screws are used to screw the first connection portion of the box cover to an end of the connection column away from the connection platform.

9. The explosion-proof chassis according to claim 8, characterized in that: The connection assembly includes two first-type screws, and the two first-type screws are arranged at positions substantially symmetrical to the connection column and close to the edge of the connection platform.

10. An electronic device, characterized in that: The electronic device comprises an explosion-proof chassis as claimed in any one of claims 1 to 9.

Images