Photovoltaic inverter

Abstract

The utility model discloses a photovoltaic inverter which comprises a box body, the photovoltaic inverter further comprises a preassembly body, the preassembly body comprises a supporting plate and a circuit board arranged on the supporting plate, and a limiting assembly is arranged between the side wall of the box body and the supporting plate to prevent the preassembly body from generating displacement in the horizontal direction. The upper end of the side wall is further provided with a connecting piece extending from bottom to top so that the supporting plate can be fixed to the side wall of the box body. The photovoltaic inverter provided by the utility model is simpler and more convenient to assemble, and the production line efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of power electronics technology, and specifically relates to a photovoltaic inverter. Background Technology

[0002] Existing inverters have a compact internal space, and most circuit boards are fixed by side screws during assembly. This method is not suitable for production line operations and also requires space to place an electric screwdriver. There are also cases where vertical screws are needed. In these cases, the screwdriver handle needs to be extended to enter the narrow space inside the inverter. If a screw is accidentally knocked off, it may be difficult to remove, increasing the difficulty of the operation and reducing work efficiency. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a photovoltaic inverter that is simpler and more convenient to assemble, thereby improving production line efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A photovoltaic inverter includes a housing, and the photovoltaic inverter further includes a pre-assembled assembly. The pre-assembled assembly includes a support plate and a circuit board disposed on the support plate. A limiting component is provided between the side wall of the housing and the support plate to prevent the pre-assembled assembly from displacing in the horizontal direction. The upper end of the side wall is also provided with a connector extending from bottom to top to fix the support plate to the side wall of the housing.

[0006] In a preferred embodiment, the limiting component includes a limiting member disposed on the side wall and a slot disposed on the support plate.

[0007] In a preferred embodiment, the number of the limiting components is one or more sets.

[0008] More specifically, the number of the limiting components is one set.

[0009] In a preferred embodiment, the limiting member includes a main body extending inward from the sidewall and an insertion portion extending upward from the main body, the insertion portion being inserted into the slot.

[0010] In a preferred embodiment, the slot is located in the middle of the support plate.

[0011] In a preferred embodiment, the photovoltaic inverter further includes a guide bracket disposed on the left side of the support plate, the guide bracket having a guide ramp.

[0012] In a preferred embodiment, the guide bracket is provided with a press-fit stud, the support plate is provided with a mounting component, and the press-fit stud is inserted into the first mounting hole of the mounting component.

[0013] In a preferred embodiment, the fixing component includes a fixing bracket disposed on the side wall, the fixing bracket being provided with a press-fit stud, and the support plate being provided with a plurality of second mounting holes through which the press-fit stud passes.

[0014] In a preferred embodiment, the fixing bracket and the limiting member are disposed on the first side wall of the housing, and the guide bracket is disposed on the second side wall of the housing, with the first side wall and the second side wall connected together. The first side wall corresponds to the long side of the photovoltaic inverter, and the second side wall corresponds to the short side of the photovoltaic inverter.

[0015] In a preferred embodiment, the circuit board is provided with a third mounting hole, and the support plate is provided with a press-fit stud, which passes through the third mounting hole to fix the circuit board and the support plate together.

[0016] The present invention adopts the above solution and has the following advantages compared with the prior art:

[0017] During the assembly of the photovoltaic inverter of this utility model, the circuit board and the support plate are first fixedly connected. Then the support plate is moved from top to bottom. When the support plate moves to the connecting piece, the support plate is fixed. During the process of locking the support plate in the box, the limiting component between the support plate and the side wall can achieve the function of fastening the support plate and the circuit board, preventing the pre-assembled body from moving horizontally. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional schematic diagram of a photovoltaic inverter according to an embodiment of the present utility model;

[0020] Figure 2 This is an exploded view of a photovoltaic inverter according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the interior of the box according to an embodiment of the present utility model;

[0022] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the support plate according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the limiting component according to an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of a guide bracket according to an embodiment of the present utility model.

[0026] in,

[0027] 100. Photovoltaic inverter; 101. Housing; 102. First side wall; 103. Second side wall;

[0028] 1. Limiting component; 11. Limiting element; 111. Insertion part; 112. Main body part; 12. Slot; 121. Abutment part;

[0029] 2. Support plate; 21. Mounting component; 211. First mounting hole; 22. Second mounting hole; 23. Guide post;

[0030] 3. Circuit board; 31. Third mounting hole;

[0031] 4. Guide bracket; 41. Guide ramp;

[0032] 5. Fixing components; 51. Fixing bracket; 511. Press-fit stud. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] Reference Figures 1 to 7 As shown, this embodiment provides a photovoltaic inverter 100, including a housing 101 and a pre-assembled assembly. The pre-assembled assembly includes a support plate 2 and a circuit board 3, a limiting component 1, a guide bracket 4 and a fixing component 5 disposed on the support plate 2, wherein the circuit board 3 and the support plate 2 are disposed inside the housing 101.

[0035] The circuit board 3 and the support plate 2 are fixedly connected. Specifically, the circuit board 3 is provided with a third mounting hole 31, and the support plate 2 is provided with a press-fit stud 511 and a guide post 23. There are two guide posts 23, which are respectively set diagonally opposite each other on the support plate 2. During assembly, the circuit board 3 is pre-positioned by the guide post 23. At the same time, multiple press-fit studs 511 pass through the third mounting hole 31, and then the circuit board 3 and the support plate 2 are fixedly connected by screws and other fasteners.

[0036] Furthermore, the housing 101 has a top cover (not shown), a bottom plate, and side walls located between the top cover and the bottom plate. The support plate 2 is located between the side walls of the housing 101 and the circuit board 3. Even further, the housing 101 has a first side wall 102 and a second side wall 103, which are arranged adjacent to each other. The first side wall 102 corresponds to the short side of the housing 101, and the second side wall 103 corresponds to the long side of the housing 101. (Refer to...) Figure 2 As shown, the fixed bracket 51 and the limiting component 1 are disposed on the first side wall 102 of the housing 101, and the guide bracket 4 is disposed on the second side wall 103 of the housing 101. The first side wall 102 and the second side wall 103 are connected.

[0037] Reference Figures 2 to 4 As shown, a limiting component 1 for preventing horizontal displacement of the pre-assembled assembly is provided between the support plate 2 and the first side wall 102. The limiting component 1 includes a limiting member 11 disposed on the first side wall 102 and a slot 12 disposed on the support plate 2. The slot 12 has an abutting portion 121 that abuts against the limiting member 11. The slot 12 is located in the middle of the support plate 2, and the limiting member 11 is located in the middle of the first side wall 102. During assembly, the limiting member 11 is inserted into the slot 12. After assembly, the limiting member 11 and the abutting portion 121 are interference-fitted, and the support plate 2 is pressed tightly by the limiting member 11 to achieve a fastening purpose.

[0038] Furthermore, the limiting member 11 has a main body portion 112 extending inward from the first sidewall 102 and an insertion portion 111 extending upward from the main body portion 112. The included angle between the insertion portion 111 and the main body portion 112 is 85-95°. Specifically, in this embodiment, the included angle between the insertion portion 111 and the main body portion 112 is 90°. The insertion portion 111 is inserted into the slot 12 and abuts against the abutment portion 121 to prevent displacement of the pre-assembled body. The aforementioned "extending inward" refers to the direction away from the sidewall, and "extending upward" refers to the direction closer to the top cover.

[0039] It should be noted that the number of limiting components 1 is one or more sets. Specifically, in this embodiment, the number of limiting components 1 is one set. In other embodiments, the number of limiting components 1 can be two or more sets. For example, the number of limiting components 1 can be two sets, with two limiting members 11 disposed in the middle of the first side wall 102. The middle of the support plate 2 has two corresponding slots. During assembly, the two limiting members are inserted into the corresponding two slots. It is not necessary to fix the support plate on the left or right side of the box. This is more suitable for boxes where the left and right sides are narrow spaces, i.e., the guide bracket 4 only needs to be installed as a guide. In this way, only screws need to be fastened to the top of the box to achieve the fixing effect. It should be noted that "left and right sides" refers to... Figure 2 The front and back directions in the middle.

[0040] Furthermore, combined Figure 7 As shown, the guide bracket 4 is located on the left side of the support plate 2. Specifically, the guide bracket 4 is fixed to the second side wall 103 by screw fastening. The guide bracket 4 has a guide ramp 41, under the action of the guide ramp 41, the limiting member 11 can accurately enter the slot 12 on the support plate 2. Furthermore, the guide bracket 4 has a press-fit stud 511, and the support plate 2 has a mounting member 21. The press-fit stud 42 is inserted into the first mounting hole 211 of the mounting member 21, and then the support plate 2 is fixed to the second side wall 103 of the housing 101 by screws and other fasteners. In other embodiments, the guide bracket 4 can also be set on the right side of the support plate 2 or on both sides of the support plate 2. Correspondingly, mounting members can be set at corresponding positions on the support plate 2 to cooperate with the guide bracket 4.

[0041] The photovoltaic inverter 100 also includes a fixing component 5, which is used to fix the housing 101 and the support plate 2. Further, the fixing component 5 includes a fixing bracket 51 disposed on the side wall, specifically disposed at the top of the side wall, or above the limiting member 11. More specifically, there are multiple fixing brackets 51, each fixed to the top of the side wall by screws. The middle of the fixing bracket 51 is provided with a connector for fixing the support plate 2 to the side wall of the housing. The connector is specifically a press-fit stud 42. The support plate 2 has multiple second mounting holes 22 through which the press-fit studs 42 pass. During assembly, the press-fit studs 511 are inserted into the second mounting holes 22 and fixed by screws.

[0042] Before assembly, the fixed component 5, guide bracket 4, and limiting bracket 11 of the photovoltaic inverter 100 in this embodiment are pre-processed and assembled by the supplier, making operation relatively simple and convenient. During assembly, the circuit board 3 and support plate 2 are first assembled on the outside of the housing 101. Specifically, the press-fit studs 511 on the support plate 2 are passed through the third mounting holes 31 on the circuit board 3, and the circuit board 3 and support plate 2 are fixedly connected with screws (this can be completed in the pre-processing stage, shortening the production line time). Then, the assembled support plate 2 with the circuit board 3 is moved along the housing. As the side wall of body 101 moves downward, it is limited by the guide slope 41 of guide bracket 4 when it is close to the fixed bracket 51. This ensures that the first mounting hole 211 on the support plate 2 can be inserted into the press-fit stud 511 of guide bracket 4. At this time, the limiting member 11 on the side wall can also accurately enter the slot 12 on the support plate 2. The second mounting hole 22 on the support plate 2 is inserted into the press-fit stud 511 of fixed bracket 51. Finally, the assembly can be completed by tightening screws in the space between fixed bracket 51 and guide bracket 4. The assembly is less prone to errors and has high work efficiency.

[0043] Existing inverters have a compact internal space, often requiring screws to be fastened in narrow areas during assembly. This limited space hinders worker operation, leading to higher defect rates and prolonged assembly time. This embodiment solves the problem of needing to tighten screws in narrow internal spaces by simply adding a support plate. Assembly is simpler and more convenient, improving production line efficiency and reducing operational errors.

[0044] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0045] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0046] The above embodiments are only for illustrating the technical concept and features of this utility model, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly, and should not be construed as limiting the protection scope of this utility model. All equivalent transformations or modifications made based on the principles of this utility model should be covered within the protection scope of this utility model.

Claims

1. A photovoltaic inverter comprising a cabinet, characterized in that, The photovoltaic inverter further comprises a pre-assembled body, the pre-assembled body comprises a support plate and a circuit board arranged on the support plate, a limiting assembly is arranged between the side wall of the box and the support plate to prevent the pre-assembled body from moving in the horizontal direction, and the upper end of the side wall is further provided with a connector extending from bottom to top to fix the support plate on the side wall of the box.

2. The photovoltaic inverter of claim 1, wherein, The limiting assembly comprises a limiting piece arranged on the side wall and a slot arranged on the support plate.

3. The photovoltaic inverter of claim 2, wherein, The number of limiting assemblies is one or more groups.

4. The photovoltaic inverter of claim 2, wherein, The limiting piece comprises a main body portion extending inwardly from the side wall and a plug-in portion extending upwardly from the main body portion, and the plug-in portion is inserted into the slot.

5. The photovoltaic inverter of claim 4, wherein, The slot is located in the middle of the support plate.

6. The photovoltaic inverter of claim 3, wherein, The photovoltaic inverter further comprises a guide bracket arranged on the left side of the support plate, and the guide bracket is provided with a guide inclined surface.

7. The photovoltaic inverter of claim 6, wherein, The guide bracket is provided with a press-in stud, and the support plate is provided with a mounting piece, and the press-in stud is inserted into a first mounting hole of the mounting piece.

8. The photovoltaic inverter of claim 7, wherein, The photovoltaic inverter comprises a fixing assembly for fixedly connecting the box and the support plate, the fixing assembly comprises a fixing bracket arranged on the side wall, the fixing bracket is provided with a press-in stud, and the support plate is provided with a plurality of second mounting holes through which the press-in stud passes.

9. The photovoltaic inverter of claim 8, wherein, The fixing bracket and the limiting piece are arranged on the first side wall of the box, the guide bracket is arranged on the second side wall of the box, and the first side wall and the second side wall are connected.

10. The photovoltaic inverter of claim 1, wherein, The circuit board is provided with a third mounting hole, the support plate is provided with a press-in stud, and the press-in stud passes through the third mounting hole to fixedly connect the circuit board and the support plate.

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