Inverter box body convenient to disassemble and inverter

Abstract

The utility model discloses an inverter box body convenient to disassemble and an inverter. The inverter box body comprises a box body, a radiator, a first cover plate and a second cover plate. A first opening and a second opening are formed in the top face of the box body, a third opening is formed in the bottom face of the box body, and the distance between the edge of the third opening and the side wall of the box body is larger than that between the first opening and the second opening and the side wall of the box body. The first cover plate is detachably connected with the first opening in a sealed mode, a circle of first flange wall protruding outwards is arranged on the first opening, and a first sealing piece is arranged on the first flange wall; the second cover plate is detachably connected with the second opening in a sealed mode, a circle of second flange wall protruding outwards is arranged on the second opening, and a second sealing piece is arranged on the second flange wall. The radiator is detachably connected with the third opening in a sealed mode, an annular groove is formed in the radiator, and the annular groove is formed in the outer side of the third opening and is configured to be provided with an annular third sealing piece. The device is convenient to disassemble, maintain and overhaul.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, and particularly relates to an inverter box body and an inverter which are convenient to disassemble. Background Art

[0002] With the reduction of the cost of energy storage batteries and the maturity of technology, the integrated photovoltaic energy storage inverter has gradually entered thousands of households. For the sake of aesthetics, the photovoltaic energy storage inverters on the market usually connect the radiator and the casing into an integrated structure, but the overall structure is not convenient for assembly and disassembly, not only the assembly cost is relatively high, but also the after-sales maintenance is very troublesome.

[0003] The disclosure of the above background art content is only used to assist in understanding the concept and technical solution of the utility model, and it does not necessarily belong to the prior art of this patent application, nor will it necessarily give technical guidance; in the case where there is no clear evidence that the above content has been made public before the filing date of this patent application, the above background art should not be used to evaluate the novelty and creativity of this application. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an inverter box body and an inverter which are convenient to disassemble, and are convenient for disassembly, maintenance and repair.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] An inverter box body which is convenient to disassemble, comprising a box body main body, a radiator, a first cover plate and a second cover plate;

[0007] A first opening and a second opening are arranged on the top surface of the box body main body, a third opening is arranged on the bottom surface of the box body main body, and the distance from the edge of the third opening to the side wall of the box body main body is greater than the distance from the first opening to the side wall of the box body main body and also greater than the distance from the second opening to the side wall of the box body main body;

[0008] The first cover plate is detachably and hermetically connected to the first opening, a first flange wall protruding outwards is arranged on the first opening, and a first sealing member is arranged on the first flange wall;

[0009] The second cover plate is detachably and hermetically connected to the second opening, a second flange wall protruding outwards is arranged on the second opening, and a second sealing member is arranged on the second flange wall;

[0010] The radiator is detachably and hermetically connected to the third opening, an annular groove is arranged on the radiator, the annular groove is arranged outside the third opening, and is configured to install an annular third sealing member.

[0011] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, the first seal is disposed inside the connection between the first opening and the first cover plate;

[0012] The second seal is disposed inside the connection between the second opening and the second cover plate;

[0013] The annular groove and the third seal are disposed outside the connection between the radiator and the box body.

[0014] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, a first extension portion parallel to the top surface of the box body and extending outward from the first opening is provided on the first flange wall, and a plurality of first through holes for cooperating with fixing members to fix the first cover plate to the box body are provided on the first extension portion;

[0015] A second extension portion parallel to the top surface of the box body and extending outward from the second opening is provided on the second flange wall, and a plurality of second through holes for cooperating with fixing members to fix the second cover plate to the box body are provided on the second extension portion.

[0016] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, the minimum distance between the inner wall of the first flange wall and the edge of the first through hole is 2 mm to 4 mm; and / or,

[0017] The minimum distance between the inner wall of the second flange wall and the edge of the second through hole is 2 mm to 4 mm.

[0018] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, the position of the first opening corresponds to the installation positions of the EMC circuit board assembly and the control circuit board assembly of the inverter in the box body;

[0019] The position of the second opening corresponds to the installation position of the output circuit board assembly of the inverter in the box body;

[0020] The position of the third opening corresponds to the installation position of the power circuit board assembly of the inverter on the radiator, and the size of the third opening is not less than the size of the power circuit board assembly.

[0021] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, a plurality of countersunk holes are provided on the radiator, and blind rivet nuts corresponding to the countersunk holes are provided on the box body, and the EMC circuit board assembly, the control circuit board assembly, and the output circuit board assembly are respectively fixedly connected to the blind rivet nuts through studs.

[0022] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, the first seal is a foamed rubber strip; and / or,

[0023] the second seal is a foamed rubber strip;

[0024] and / or, the third seal is a foamed rubber strip.

[0025] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, the distance between the annular groove and the outer edge of the radiator is 5 mm to 10 mm; and / or,

[0026] a display screen and / or control buttons are provided on the first cover plate or the second cover plate.

[0027] Further, based on any one of the foregoing technical solutions or a combination of multiple technical solutions, a third extension portion parallel to the ground of the box body and extending inward is provided on the third opening, and a plurality of third through holes for cooperating with fixing members to fix the box body on the radiator are provided on the third extension portion.

[0028] According to another aspect of the present invention, the present invention provides an inverter, including the inverter box body according to any one of the foregoing technical solutions or a combination of multiple technical solutions, and a power circuit board assembly, an EMC circuit board assembly, a control circuit board assembly, an output circuit board assembly, and a cooling fan assembly provided inside the inverter box body.

[0029] The beneficial effects brought by the technical solutions provided by the present invention are as follows:

[0030] a. By designing the inverter box body as a split structure including a radiator, a box body, a first cover plate, and a second cover plate, wherein the first cover body and the second cover body can be quickly disassembled from the box body, it is convenient to maintain and repair the parts inside the inverter box body;

[0031] b. By respectively designing a first seal and a second seal at the joints of the box body and the first cover plate and the second cover plate, and the first seal and the second seal are respectively pressed on the first cover plate and the second cover plate through the flange walls protruding from the box body, and a third seal is designed between the radiator and the box body, the inverter box body has good sealing performance;

[0032] c. By designing the distances between the side walls of the first opening and the second opening and the edge of the box body to be smaller than the distance between the side wall of the third opening and the edge of the box body, the side walls of the first opening and the second opening will not interfere with the operation of installation and disassembly tools such as screwdrivers, which is convenient for product assembly and disassembly and can also ensure the minimum design of the outer contour size of the chassis;

[0033] d. The present utility model arranges the third seal outside the connection between the radiator and the box body and near the four peripheral edges of the radiator. Specifically, the distance from the first installation groove to the outer edge of the radiator can be designed to be 5 mm to 10 mm, which can isolate the fasteners at the connection between the radiator and the box body and the air circulation between the air inside the connection and the outside air. On the premise of ensuring the sealing performance of the foaming rubber strip and the overall heat dissipation efficiency, the size of the box body can be minimized, playing the role of saving materials and optimizing the appearance volume of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 A three-dimensional schematic diagram of an inverter provided for an exemplary embodiment of the present utility model;

[0036] Figure 2 A sectional schematic diagram of an inverter provided for an exemplary embodiment of the present utility model;

[0037] Figure 3 An exploded schematic diagram of a partial structure of an inverter provided for an exemplary embodiment of the present utility model;

[0038] Figure 4 A front view schematic diagram of the assembled structure of the box body and the radiator of an inverter provided for an exemplary embodiment of the present utility model;

[0039] Figure 5 A three-dimensional schematic diagram of the assembled structure of the box body and the radiator of an inverter provided for an exemplary embodiment of the present utility model;

[0040] Figure 6 An exploded schematic diagram of an inverter provided for an exemplary embodiment of the present utility model.

[0041] Among them, the reference numerals include: 1 - radiator, 2 - power circuit board assembly, 3 - box body, 4 - first fastener, 5 - stud, 6 - heat dissipation fan assembly, 7 - EMC circuit board assembly, 8 - control circuit board assembly, 9 - output circuit board assembly, 10 - first cover plate, 11 - second cover plate, 12 - second fastener, 13 - first seal, 14 - second seal, 15 - third seal. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solution in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0043] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0044] In an embodiment of the present utility model, an inverter is provided. Refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 . The inverter includes a conveniently detachable inverter box body, and a power circuit board assembly 2, an EMC circuit board assembly 7, a control circuit board assembly 8, an output circuit board assembly 9, and a cooling fan assembly 6 provided inside the inverter box body.

[0045] Refer to Figure 2 . The inverter box body includes a box body main body 3, a radiator 1, a first cover plate 10, and a second cover plate 11. Among them, a first opening and a second opening are provided on the top surface of the box body main body 3, and a third opening is provided on the bottom surface of the box body main body 3. The first cover plate 10 is detachably and sealingly connected to the first opening, the second cover plate 11 is detachably and sealingly connected to the second opening, and the radiator 1 is detachably and sealingly connected to the third opening. The box body main body 3, the first cover plate 10, and the second cover plate 11 can adopt a sheet metal structure, which is low in cost and beautiful. And a display screen and / or control buttons are provided on the first cover plate 10 or the second cover plate 11.

[0046] Refer to Figure 3 and Figure 4 . The power circuit board assembly 2 and the cooling fan assembly 6 are fixedly connected to the top surface of the radiator 1 through a plurality of first fasteners 4.

[0047] The box body 3 is fixedly connected to the top surface of the radiator 1 through a plurality of the first fasteners 4. The position of the third opening corresponds to the installation position of the power circuit board assembly 2 on the radiator 1, and the size of the third opening is not less than the size of the power circuit board assembly 2. The power circuit board assembly 2 and the cooling fan assembly 6 can pass through the third opening and be accommodated inside the box body 3.

[0048] See Figure 5 , a plurality of countersunk holes are provided on the radiator 1, and rivet nuts are provided on the box body 3 at positions corresponding to the countersunk holes. The EMC circuit board assembly 7, the control circuit board assembly 8, and the output circuit board assembly 9 are respectively fixedly connected to the rivet nuts through studs 5. Thus, the internal circuit boards of the inverter are designed as a double-layer structure, which can not only reduce the size of the inverter, but also reduce the wiring distance between the circuit board assemblies.

[0049] In this embodiment, the position of the first opening corresponds to the installation positions of the EMC circuit board assembly 7 and the control circuit board assembly 8 of the inverter inside the box body 3; the position of the second opening corresponds to the installation position of the output circuit board assembly 9 of the inverter inside the box body 3.

[0050] In this embodiment, the distance from the edge of the third opening to the side wall of the box body 3 is greater than the distance from the first opening to the side wall of the box body 3 and is also greater than the distance from the second opening to the side wall of the box body 3. By removing the first cover plate 10 and the second cover plate 11, the components inside the inverter box can be conveniently maintained and repaired. Moreover, the contours of the first opening and the second opening are larger than the contour of the third opening, so that the side walls of the first opening and the second opening will not interfere with the operation of installation and disassembly tools such as screwdrivers, and at the same time, the minimum design of the outer contour size of the chassis can be ensured.

[0051] As Figure 3 shown, a circle of outwardly protruding first flange walls is provided on the first opening, and a first seal 13 is provided on the first flange walls. The first seal 13 is arranged inside the connection between the first opening and the first cover plate 10. Preferably, the first seal 13 is made of a foamed rubber strip. The first flange walls are preferably arranged perpendicular to the top surface of the box body 3. By arranging the first seal 13 on the first flange walls, the first cover plate 10 can be more reliably in contact with the first seal 13 when assembled with the box body 3, thereby improving the sealing performance of the box.

[0052] As Figure 2 and 3As shown, a first extension portion parallel to the top surface of the box body 3 and extending outward from the first opening is provided on the first flange wall. The first extension portion can be arranged on opposite sides of the first flange wall as shown in Figure 3 , or the first extension portion can be arranged around the first flange wall. A plurality of first through holes for cooperating with fixing members to fix the first cover plate 10 to the box body 3 are provided on the first extension portion. A plurality of rivet nuts corresponding to the first through holes one by one are arranged on the back surface of the first extension portion. A plurality of fifth through holes corresponding to the first through holes one by one are provided on the first cover plate 10. The fifth through holes are preferably countersunk holes. As shown in Figure 6 , the first cover plate 10 can be fixedly connected to the first opening through a second fastener 12 such as a hexagon screw. The minimum distance between the inner wall of the first flange wall and the edge of the first through hole is 2 mm to 4 mm, preferably 2 mm, so as to make the size of the inverter chassis as small as possible.

[0053] As shown in Figure 2 , a second flange wall protruding outward is provided on the second opening. A second sealing member 14 is arranged on the second flange wall. The second sealing member 14 is arranged inside the connection between the second opening and the second cover plate 11. Preferably, the first sealing member 13 is made of a foamed rubber strip. The second flange wall is preferably arranged perpendicular to the top surface of the box body 3. By arranging the second sealing member 14 on the second flange wall, the second cover plate 11 can contact the second sealing member 14 more reliably when assembled with the box body 3, thereby improving the sealing performance of the box.

[0054] As shown in Figure 2 , a second extension portion parallel to the top surface of the box body 3 and extending outward from the second opening is provided on the second flange wall. Similarly, the first extension portion can be arranged on opposite sides of the first flange wall, or can be arranged around it. A plurality of second through holes for cooperating with fixing members to fix the second cover plate 11 to the box body 3 are provided on the second extension portion. A plurality of rivet nuts corresponding to the second through holes one by one are arranged on the back surface of the second extension portion. A plurality of sixth through holes corresponding to the second through holes one by one are provided on the first cover plate 10. The sixth through holes are preferably countersunk holes. As shown in Figure 6 , the second cover plate 10 can be fixedly connected to the second opening through the second fastener 12 such as a hexagon screw. Similarly, the minimum distance between the inner wall of the second flange wall and the edge of the second through hole is 2 mm to 4 mm, preferably 2 mm, so as to make the size of the inverter chassis as small as possible.

[0055] A third extension portion parallel to the ground of the box body 3 and extending inward is provided on the third opening. A plurality of third through holes for cooperating with fixing members to fix the box body 3 on the radiator 1 are provided on the third extension portion. A number of threaded holes corresponding to the third through holes one by one are provided on the radiator 1. The box body 3 is fixedly connected to the top surface of the radiator 1 through a first fastener 4 such as a round head screw.

[0056] In this embodiment, an annular groove is provided on the top surface of the radiator 1. The annular groove is arranged outside the third opening and is configured to install an annular third seal 15. Preferably, the third seal 15 is a foamed rubber strip. The annular groove and the third seal 15 are arranged at the connection between the radiator 1 and the box body 3, that is, outside the first fastener 4 and close to the peripheral edge of the radiator 1. Preferably, the distance between the annular groove and the outer edge of the radiator 1 is 5 mm to 10 mm. This design can isolate the fasteners at the connection between the radiator 1 and the box body 3 and the air circulation between the air inside and outside the connection, ensuring the airtightness of the internal cavity of the box. At the same time, on the premise of ensuring the sealing performance of the foamed rubber strip and the overall heat dissipation efficiency, the external contour size of the box can be minimized, playing a role in saving materials and optimizing the appearance volume of the product.

[0057] The inverter box provided by the utility model is not only convenient for disassembly, maintenance and repair, but also has a compact structure and small size, which can reduce the material cost and transportation cost, and has good airtightness and can meet the safety regulations requirements of the product.

[0058] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0059] The above description is only a specific implementation manner of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present application.

Claims

1. An inverter box that is easy to disassemble, characterized in that: It comprises a box body (3), a radiator (1), a first cover plate (10) and a second cover plate (11); The top surface of the box body (3) is provided with a first opening and a second opening, and the bottom surface of the box body (3) is provided with a third opening, and the distance between the edge of the third opening and the side wall of the box body (3) is greater than the distance between the first opening and the side wall of the box body (3) and is also greater than the distance between the second opening and the side wall of the box body (3); The first cover plate (10) is detachably sealed to the first opening, the first opening is provided with a circle of first flange wall protruding outward, and the first flange wall is provided with a first sealing member (13); The second cover plate (11) is detachably sealed to the second opening, the second opening is provided with a circle of second flange wall protruding outwards, and the second flange wall is provided with a second sealing member (14); The radiator (1) is detachably sealed to the third opening. The radiator (1) is provided with an annular groove, which is arranged on the outside of the third opening and is configured to install an annular third sealing member (15).

2. The inverter box according to claim 1, characterized in that: The first sealing member (13) is arranged on the inner side of the connection between the first opening and the first cover plate (10); The second sealing member (14) is arranged on the inner side of the connection between the second opening and the second cover plate (11); The annular groove and the third sealing member (15) are arranged on the outside of the connection between the radiator (1) and the box body (3).

3. The inverter box according to claim 1, characterized in that: The first flange wall is provided with a first extension portion which is parallel to the top surface of the box body (3) and extends toward the outside of the first opening, and the first extension portion is provided with a plurality of matching fixing members to realize fixing the first cover plate (10) to the first through hole on the box body (3); The second flange wall is provided with a second extension portion which is parallel to the top surface of the box body (3) and extends toward the outside of the second opening, and the second extension portion is provided with a plurality of matching fixing members to fix the second cover plate (11) to the second through hole on the box body (3).

4. The inverter box according to claim 3, characterized in that: The minimum distance between the inner wall of the first flange wall and the edge of the first through hole is 2 mm to 4 mm; and / or, The minimum distance between the inner wall of the second flange wall and the edge of the second through hole is 2 mm to 4 mm.

5. The inverter box according to claim 1, characterized in that: The position of the first opening corresponds to the installation position of the EMC circuit board assembly (7) and the control circuit board assembly (8) of the inverter in the box body (3); The position of the second opening corresponds to the installation position of the output circuit board assembly (9) of the inverter in the box body (3); The position of the third opening corresponds to the installation position of the power circuit board assembly (2) of the inverter on the heat sink (1), and the size of the third opening is not less than the size of the power circuit board assembly (2).

6. The inverter box according to claim 5, characterized in that: The heat sink (1) is provided with a plurality of countersunk holes, and the box body (3) is provided with rivet nuts at positions corresponding to the countersunk holes, and the EMC circuit board assembly (7), the control circuit board assembly (8) and the output circuit board assembly (9) are fixedly connected to the rivet nuts via studs (5), respectively.

7. The inverter box according to claim 1, characterized in that: The first sealing member (13) is a foam strip; and / or, The second sealing member (14) is a foam rubber strip; And / or, the third sealing member (15) is a foam rubber strip.

8. The inverter box according to claim 1, characterized in that: The distance between the annular groove and the outer edge of the heat sink (1) is 5 mm to 10 mm; and / or, A display screen and / or control buttons are provided on the first cover plate (10) or the second cover plate (11).

9. The inverter box according to claim 1, characterized in that: The third opening is provided with a third extension portion which is parallel to the ground surface of the box body (3) and extends inwardly, and the third extension portion is provided with a plurality of matching fixing members to fix the box body (3) to the third through hole on the radiator (1).

10. An inverter, characterized in that: It comprises an inverter case as claimed in any one of claims 1 to 9, and a power circuit board assembly (2), an EMC circuit board assembly (7), a control circuit board assembly (8), an output circuit board assembly (9) and a cooling fan assembly (6) arranged inside the inverter case.

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