Inverter side wall junction box and inverter

Abstract

The utility model discloses an inverter side wall junction box and an inverter, and relates to the technical field of inverters, the inverter side wall junction box comprises a base and an upper cover, the base is provided with an operation hole communicated with a case inner cavity of an inverter body, a base mounting hole connected with the inverter body and a base connecting hole connected with the upper cover, and the operation hole is communicated with the case inner cavity of the inverter body. And the base mounting hole is isolated from the base connecting hole, namely, the base mounting hole is not communicated with the base connecting hole, so that accumulated water of the upper cover is prevented from entering the inner cavity of the inverter body through the base connecting hole and the base mounting hole when the upper cover is opened. The upper cover is rotatably connected to the base and provided with an upper cover connecting hole matched with the base connecting hole in position, the upper cover and the base are connected in a sealed mode under the condition that the upper cover rotates to the first position, specifically, the connecting piece penetrates through the upper cover connecting hole and is screwed to the base connecting hole, so that the upper cover can seal the operation hole, and the operation hole is prevented from being exposed. And the sealing performance of the junction box on the side wall of the inverter is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of inverters, and more particularly, to an inverter side wall junction box and an inverter. Background Art

[0002] Inverters are crucial components of photovoltaic power generation systems. Currently, the electrical components within the inverter chassis require regular maintenance and electrical connections to external components. To facilitate maintenance and electrical connections, a junction box is typically installed outside the chassis. Terminal blocks are located within the box, and cables within the inverter are electrically connected to these terminals, allowing operators to perform inspections and wiring. Because the interior of the junction box is connected to the interior of the inverter chassis, its sealing performance directly impacts the inverter's performance.

[0003] Therefore, how to ensure the sealing performance of the inverter side wall junction box has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of this, an object of the present application is to provide an inverter side wall junction box.

[0005] Another object of the present application is to provide an inverter comprising the above-mentioned inverter side wall junction box.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] An inverter side wall junction box, comprising a base and an upper cover;

[0008] The base includes an operation hole communicating with the inner cavity of the chassis of the inverter body, a base mounting hole connected to the inverter body, and a base connecting hole connected to the upper cover, and the base mounting hole is isolated from the base connecting hole;

[0009] The upper cover is rotatably connected to the base, and the upper cover includes an upper cover connecting hole adapted to the base connecting hole. When the upper cover is rotated to the first position, the upper cover covers the operating hole, and the connecting piece passes through the upper cover connecting hole and is screwed to the base connecting hole.

[0010] Optionally, in the above-mentioned inverter side wall junction box, at least one of the base and the upper cover includes a first sealing groove, and a first sealing member is provided in the first sealing groove;

[0011] When the upper cover is rotated to the first position, the first sealing groove is arranged around the operating hole, and the first sealing member is compressed and disposed between the base and the upper cover.

[0012] Optionally, in the above-mentioned inverter side wall junction box, when the upper cover is rotated to the first position, the base connection hole is provided on the outer ring of the first sealing member.

[0013] Optionally, in the above-mentioned inverter side wall junction box, the side of the base facing the inverter body includes a second sealing groove, the second sealing member is embedded in the second sealing groove, and the base mounting hole is arranged on the inner circle of the second sealing groove.

[0014] Optionally, in the above-mentioned inverter side wall junction box, the base mounting hole and the base connection hole are staggered; or,

[0015] The base mounting hole and the base connecting hole are coaxially arranged, and both the base mounting hole and the base connecting hole are blind holes.

[0016] Optionally, in the above-mentioned inverter side wall junction box, the base connection hole is a threaded hole, an internal thread section is provided on the inner wall of the upper cover connection hole, the connecting piece is screwed through the upper cover connection hole and tightened to the base connection hole, and the extension length of the external thread section on the connecting piece is not greater than the extension length of the internal thread section on the base connection hole.

[0017] Optionally, in the above-mentioned inverter side wall junction box, there are multiple upper cover connection holes, and all of them are elliptical holes.

[0018] Optionally, in the above-mentioned inverter side wall junction box, the base and / or the upper cover includes a drainage structure to prevent water accumulation, and the drainage structure includes a high part and a low part, and the high part and the low part are transitionally connected by a plane structure or a curved structure.

[0019] Optionally, in the above inverter side wall junction box, there is one high part and one low part; or,

[0020] There is one high portion and two low portions, and the high portion is arranged between the two low portions.

[0021] Optionally, in the above-mentioned inverter side wall junction box, the base includes a water-blocking protrusion arranged around the operation hole, and the water-blocking protrusion protrudes toward the upper cover.

[0022] Optionally, in the above-mentioned inverter side wall junction box, when the upper cover is rotated to the first position, a waterproof gap is provided between the water retaining protrusion and the upper cover to separate the water retaining protrusion and the upper cover.

[0023] Optionally, in the above-mentioned inverter side wall junction box, the base and the upper cover respectively include a first rotating connection portion and a second rotating connection portion, and the first rotating connection portion and the second rotating connection portion are rotatably connected via a rotating shaft;

[0024] One of the first rotating connection part and the second rotating connection part includes a stop limit part. When the upper cover rotates to the second position, the stop limit part abuts against the other of the first rotating connection part and the second rotating connection part to limit the position.

[0025] Optionally, in the above-mentioned inverter side wall junction box, the base includes a positioning pin hole connected to the inverter body, and there are multiple positioning pin holes, and different positioning pin holes have different hole depths.

[0026] An inverter is characterized by comprising an inverter body and the above-mentioned inverter side wall junction box, wherein the inverter side wall junction box is arranged on the outer wall of the box body of the inverter body.

[0027] Optionally, in the above inverter, the inverter side wall junction box is arranged on the outer wall of the inverter box body through bolts and / or positioning pins.

[0028] The inverter sidewall junction box provided in the present application includes a base and an upper cover. The base is provided with an operation hole communicating with the inner cavity of the inverter body, a base mounting hole connected to the inverter body, and a base connection hole connected to the upper cover. The base mounting hole and the base connection hole are isolated, that is, the base mounting hole and the base connection hole are not connected to each other, so as to prevent water accumulated on the upper cover from entering the inner cavity of the inverter body through the base connection hole and the base mounting hole when the upper cover is opened, causing damage to internal components. The upper cover is rotatably connected to the base and is provided with an upper cover connection hole that is compatible with the position of the base connection hole. When the upper cover is rotated to a first position, the upper cover and the base are sealed and fixed to the base by a connecting member. Specifically, the connecting member can be a screw that passes through the upper cover connection hole and is tightened to the base connection hole, so that the upper cover can cover the operation hole and prevent the operation hole from being exposed.

[0029] The multiple embodiments disclosed in the present application have at least one of the following beneficial effects: the base connection hole and the base mounting hole are arranged separately, so that when the junction box is in the closed state, accumulated water cannot enter the inner cavity of the junction box and the inverter body through the base connection hole and the base mounting hole, thereby avoiding damage to the components inside the inverter body and ensuring the sealing performance of the junction box.

[0030] Since the inverter has the inverter side wall junction box, the inverter also has the above beneficial effects. Other structures refer to the existing technology and are not described here in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 A schematic diagram of the structure of the inverter disclosed in the embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the structure of the inverter side wall junction box disclosed in the embodiment of this application Figure 1 ;

[0034] Figure 3 for Figure 2 Cross-section at AA in the middle;

[0035] Figure 4 for Figure 2 Cross-section at the middle BB;

[0036] Figure 5 This is a structural schematic diagram of the inverter side wall junction box in an open state disclosed in an embodiment of the present application;

[0037] Figure 6 This is a structural schematic diagram of the inverter side wall junction box disclosed in an embodiment of the present application in a buckled state;

[0038] Figure 7 This is a schematic diagram of the structure of the base disclosed in the embodiment of this application Figure 1 ;

[0039] Figure 8 This is a schematic diagram of the structure of the base disclosed in the embodiment of this application Figure 2 ;

[0040] Figure 9 This is a schematic diagram of the structure of the base disclosed in the embodiment of this application Figure 3 ;

[0041] Figure 10 This is a schematic diagram of the structure of the base disclosed in the embodiment of this application Figure 4 ;

[0042] Figure 11 This is a schematic diagram of the structure of the upper cover disclosed in the embodiment of this application Figure 1 ;

[0043] Figure 12 This is a schematic diagram of the structure of the upper cover disclosed in the embodiment of this application Figure 2 ;

[0044] Figure 13This is a schematic diagram of the structure of the upper cover disclosed in the embodiment of this application Figure 3 ;

[0045] Figure 14 This is a schematic diagram of the structure of the upper cover disclosed in the embodiment of this application Figure 4 ;

[0046] Figure 15 This is a schematic diagram of the structure of the inverter side wall junction box disclosed in the embodiment of this application Figure 2 .

[0047] Among them, 100 is a junction box, 110 is an upper cover, 111 is an upper cover connecting hole, 112 is a second rotating connecting portion, 113 is a stop limit portion, 114 is a first sealing groove, 115 is a second drainage structure, 120 is a base, 121 is a water retaining protrusion, 122 is a base connecting hole, 123 is a second sealing member, 124 is a base mounting hole, 125 is a first rotating connecting portion, 126 is an accommodating cavity, 127 is an operating hole, 128 is a first drainage structure, 130 is a first sealing member, 140 is a connecting member, 150 is a rotating shaft, and 160 is a positioning pin;

[0048] 200 is the inverter body. DETAILED DESCRIPTION

[0049] In view of this, the present application discloses an inverter side wall junction box and an inverter.

[0050] The following describes the embodiments with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the contents of the utility model described in the claims. Furthermore, the entire contents of the configurations shown in the following embodiments are not limited to those necessary for the solutions of the utility model described in the claims. It should be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings. The embodiments and features in the embodiments of this application may be combined with each other unless there is a conflict.

[0051] It should be noted that in the description of the embodiments of the present invention, the directions and positional terms such as "up", "down", "left", "right", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0052] Combine Figures 1 to 15The inverter side wall junction box (hereinafter referred to as the junction box 100) disclosed in this application includes a base 120 and an upper cover 110. The base 120 is provided with an operation hole 127 connected to the inner cavity of the chassis of the inverter body 200, a base mounting hole 124 connected to the inverter body 200, and a base connection hole 122 connected to the upper cover 110. The base mounting hole 124 is isolated from the base connection hole 122, that is, the base mounting hole 124 is not connected to the base connection hole 122, so as to prevent the accumulated water in the upper cover 110 from entering the inner cavity of the inverter body 200 through the base connection holes 122 and the base mounting holes 124 when the upper cover 110 is opened, thereby damaging the internal components. The upper cover 110 is rotatably connected to the base 120 and is provided with an upper cover connecting hole 111 that is adapted to the position of the base connecting hole 122. When the upper cover 110 is rotated to the first position, the upper cover 110 and the base 120 are sealed and connected. The upper cover 110 is fixed to the base 120 by a connecting member 140. Specifically, the connecting member 140 can be a screw that passes through the upper cover connecting hole 111 and is tightened to the base connecting hole 122, so that the upper cover 110 can cover the operating hole 127 to prevent the operating hole 127 from being exposed.

[0053] like Figure 1 As shown, the junction box 100 is specifically arranged on the side of the inverter body 200. If the inverter body 200 has external interfaces such as a power interface and a communication interface, the junction box 100 can be arranged at the external interfaces to protect the external interfaces from contamination and moisture. In some embodiments, the accommodating cavity 126 of the junction box 100 is connected to the inner cavity of the inverter body 200 and the operation hole 127. The accommodating cavity 126 is provided with a spot inspection terminal. The spot inspection terminal is electrically connected to the electronic components inside the inverter body 200, facilitating operators to perform regular inspections of the inverter. Without disassembling the inverter body, by opening the upper cover 110 and inspecting the spot inspection terminal through the operation hole 127, it is possible to detect whether the electronic components inside the inverter body 200 are in normal operation.

[0054] Compared with the prior art, the embodiment of the present invention arranges the base connection hole 122 and the base mounting hole 124 in isolation so that when the junction box 100 is in the closed state, accumulated water cannot enter the inner cavity of the junction box 100 and the inverter body 200 through the base connection hole 122 and the base mounting hole 124, thereby avoiding damage to the components inside the inverter body 200 and ensuring the sealing performance of the junction box 100.

[0055] It should be noted that the base mounting hole 124 is not connected to the base connecting hole 122. In some examples, the base mounting hole 124 and the base connecting hole 122 can be staggered on the base 120 to avoid the base mounting hole 124 and the base connecting hole 122 being connected; or, in other examples, combined with Figure 2 and Figure 4 The base mounting hole 124 and the base connecting hole 122 can be coaxially arranged. Both the base mounting hole 124 and the base connecting hole 122 are blind holes, which can also avoid the connection between the base mounting hole 124 and the base connecting hole 122. The latter setting scheme can effectively reduce the spatial layout of the base 120 for the connection structure, thereby reducing the overall volume of the junction box 100.

[0056] The above primarily describes the implementation method for isolating the base mounting hole 124 from the base connection hole 122. To further enhance the sealing performance of the junction box 100 in the engaged state, that is, to seal the base 120 and the upper cover 110 when the upper cover 110 is rotated to the first position, at least one of the base 120 and the upper cover 110 includes a first sealing groove 114. A first sealing member 130 is disposed within the first sealing groove 114. The first sealing member 130 includes, but is not limited to, a sealing ring, a sealing strip, etc. When the upper cover 110 is rotated to the first position, the first sealing member 130 is compressed and disposed between the base 120 and the upper cover 110, providing a waterproof seal.

[0057] Figure 5 A structural solution is shown in which only the upper cover 110 includes the first sealing groove 114. The first sealing member 130 can be flipped together with the upper cover 110. During the opening process of the upper cover 110, the first sealing member 130, to which moisture may adhere, gradually moves away from the operating hole 127 as the upper cover 110 rotates, thereby reducing the probability of accumulated water adhering to the surface of the first sealing member 130 entering the operating hole 127.

[0058] When the base 120 includes the first sealing groove 114, the first sealing groove 114 is disposed on the outer circle of the operating hole 127. When both the base 120 and the upper cover 110 include the first sealing groove 114, when the upper cover 110 is rotated to the first position, the first sealing grooves 114 on the base 120 and the upper cover 110 are staggered. That is, the first sealing groove 114 of one of the base 120 and the upper cover 110 is disposed on the inner circle of the first sealing groove 114 of the other, thereby forming two sealing lines of defense and improving waterproof performance.

[0059] In some embodiments, when the upper cover 110 is rotated to the first position, the base connection hole 122 is arranged on the periphery of the first seal 130 of the base 120 and / or the upper cover 110, so that the base connection hole 122 is outside the sealing range of the first seal 130. The first seal 130 separates the operating hole 127 and the base connection hole 122, so there is no need to seal the base connection hole 122 separately, and the accumulated water will not enter the accommodating cavity 126 and the interior of the inverter body 200 through the operating hole 127, the accommodating cavity 126 or the base connection hole 122, thereby reducing the complexity of the structural assembly and reducing the leakage points.

[0060] It is understandable that, combined with Figure 6 The base 120 is mounted on the outer wall of the inverter body 200 and fastened to the inner wall of the chassis with screws. A second sealing groove (not shown) is provided on the side of the base 120 that contacts the inverter body 200. This groove accommodates a second sealing member 123. By compressing the second sealing member 123, a sealed connection is achieved between the accommodating cavity 126 of the junction box 100 and the inverter body 200.

[0061] Among them, the base mounting hole 124 is arranged in the inner circle of the second sealing groove. It can be understood that the second sealing groove is located on the periphery of all base mounting holes 124, and all base mounting holes 124 are located in the inner circle of the second sealing member 123, so that the base mounting holes 124 can be sealed synchronously.

[0062] Combine Figure 4 、 Figure 5 and Figure 6 , which shows a configuration in which there are four base mounting holes 124, respectively disposed at the four corners of the base 120. It should be noted that the above number is merely exemplary and is not specifically limited in this application. As long as the base mounting holes 124 can enable the base 120 to be mounted on the outer wall of the inverter body 200 and are spaced and isolated from the base connection holes 122, it will suffice.

[0063] In the figure, there are two base connecting holes 122, and the two base connecting holes 122 are coaxially arranged with one base mounting hole 124 respectively. This application does not specifically limit the number of base connecting holes 122, and only can realize connecting the upper cover 110 to the base 120 and isolating it from the base mounting hole 124.

[0064] In the figure, the number of the upper cover connection holes 111 matches the number of the base connection holes 122. When the number of the base connection holes 122 is multiple, the number of the upper cover connection holes 111 is also multiple. In order to facilitate assembly, the upper cover connection holes 111 can be elliptical holes to offset the processing deviation of the upper cover 110. Figure 4The upper cover connection hole 111 may be a countersunk hole to prevent the screw from protruding from the outer surface of the upper cover 110 .

[0065] In some examples, the base connection hole 122 is a threaded hole, and an internal thread section is provided on the inner wall of the upper cover connection hole 111. The number of threads of the internal thread section is small, and can be set to two circles to avoid affecting normal assembly. The connecting member 140 (screw) is screwed and connected with the base connection hole 122 and the upper cover connection hole 111. Figure 4 ( Figure 4 The connecting member 140 in the box 24 is provided with an external thread only on the outer wall thereof (the extension length of the external thread section on the connecting member 140 is not greater than the extension length of the internal thread section on the base connecting hole 122).

[0066] When connector 140 passes through upper cover connection hole 111 and is screwed into base connection hole 122, connector 140 and base connection hole 122 are threadedly engaged, and the portion corresponding to upper cover connection hole 111 is a polished rod. In the event that connector 140 becomes loose, connector 140 needs to align with the internal thread in upper cover connection hole 111 to be removed from upper cover 110, thus effectively preventing connector 140 from becoming loose.

[0067] In some examples, the base 120 can be positioned with the inverter body 200 by setting a positioning pin 160. There are at least two positioning pins 160 to ensure the accuracy of positioning. The base 120 is provided with a positioning pin hole for the positioning pin 160 to be embedded. Figure 6 , two locating pins 160 can be arranged diagonally. In order to achieve foolproof design, different locating pin holes are set with different hole depths, and corresponding different locating pins 160 have different extension lengths to avoid installation errors.

[0068] Combine Figure 1 , see Figure 9 、 Figure 13 and Figure 15 In order to reduce the accumulation of water on the outer surface of the junction box 100, the base 120 and / or the upper cover 110 include a drainage structure to prevent water accumulation. The drainage structure has a high portion and a low portion, which are transitionally connected by a flat structure or a curved structure, and allows accumulated water to slide from the high portion to the low portion, thereby reducing the probability of accumulated water remaining on the outer wall of the junction box 100. Furthermore, when the operator performs inspection or wiring operations at the junction box 100, the probability of accumulated water on the outer wall of the junction box 100 entering the interior of the junction box 100 is reduced, thereby improving the waterproof sealing performance of the junction box 100.

[0069] In actual usage scenarios, such as Figure 1As shown, the drainage structure is specifically arranged at the top of the junction box 100 in the X direction. For example, the junction box 100 is fixed to the side wall of the inverter body 200, and the drainage structure includes the top of the base 120 and / or the top of the upper cover 110, combined with Figures 9-13 In the case where water accumulates on the top surface of the base 120 and the upper cover 110, the accumulated water can naturally slide down along the drainage structure due to gravity, thereby playing a waterproof role.

[0070] Specifically, combined Figure 9 The base 120 includes a first drainage structure 128, which includes a high portion and two low portions, and the high portion is arranged between the two low portions. The first drainage structure 128 is arranged along Figure 9 The middle trend line A1 is arranged in a direction with the high part being a1 and the two low parts being a2 and a3. The accumulated water flows down from the high part to the low part. Figure 10 The first drainage structure 128 may include a high portion and a low portion. Figure 10 The direction of the middle trend line B1 is arranged, with the high part being b1 and the low part being b2. The accumulated water slides down from the high part to the low part.

[0071] Combine Figure 13 The upper cover 110 includes a second drainage structure 115. The second drainage structure 115 includes a high portion and two low portions, and the high portion is arranged between the two low portions. The second drainage structure 115 is arranged along Figure 13 The middle trend line A2 is arranged in a direction with the high part being a4 and the low part being a5 and a6. The accumulated water flows down from the high part to the low part. Figure 14 The second drainage structure 115 includes a high portion and a low portion. Figure 14 The direction of the middle trend line B2 is arranged as follows: the high part is b3 and the low part is b4. The accumulated water slides down from the high part to the low part.

[0072] It should be noted that the first drainage structure 128 and the second drainage structure 115 have the same number of high parts and low parts, and their shapes are compatible. The first drainage structure 128 and the second drainage structure 115 are preferably arranged as a symmetrical structure with one high part and two low parts, so that the base 120 and the upper cover 110 are symmetrical structures, which is convenient for production, packaging and transportation.

[0073] The upper cover 110 is connected to the end of the base 120 that is not provided with a drainage structure, that is, the flip direction of the upper cover 110 relative to the base 120 is not limited to Figure 1 The flip around the X direction shown in the figure can also be turned around Figure 1The Y direction shown in the figure is flipped, and the junction box 100 can also be set at other positions of the chassis of the inverter body 200, and is not limited to the outer wall of the chassis. It is only necessary to ensure that the inspection terminals and other devices inside the junction box 100 can be connected to the electrical inside the chassis.

[0074] It is preferred that the upper cover 110 is connected to the other end of the base 120 opposite to the first drainage structure 128, so that when the junction box 100 is set on the outer wall of the inverter body 200 chassis, the upper cover 110 is flipped upward to snap closed and flipped downward to open, and in the process of opening the upper cover 110, the probability of accumulated water on the outer wall of the upper cover 110 entering the operating hole 127 is reduced.

[0075] Combine Figure 15 The second drainage structure 115 of the upper cover 110 can be set as an arc structure, so that rainwater can flow to the ground along the arc, avoiding rainwater accumulation on the upper cover 110. The upper cover 110 and the base 120 are preferably made of materials with low surface roughness to reduce the accumulation of water on the wall.

[0076] In some embodiments disclosed in the present application, a water-retaining protrusion 121 is provided on the base 120 around the operating hole 127. The water-retaining protrusion 121 is located on the periphery of the operating hole 127. The water-retaining protrusion 121 is protruded relative to the plane where the water-retaining protrusion 121 is located. Exemplarily, the water-retaining protrusion 121 is an annular boss structure.

[0077] When the inverter is in an open-air environment and there is rain or other weather conditions, the upper cover 110 can prevent rainwater from outside from entering the accommodating cavity 126 through the operating hole 127. When the operator opens the upper cover 110 when there is water remaining on the base 120 or the upper cover 110, the water remaining on the upper cover 110 is blocked outside the operating hole 127 by the water-blocking protrusion 121, which can further reduce the chance of water entering the operating hole 127.

[0078] The setting of the above-mentioned water-retaining protrusion 121 extends the path for accumulated water to enter the accommodating cavity 126, effectively enhancing the sealing and waterproof performance of the base 120 and the upper cover 110 when they are in the closed state, and the water-retaining protrusion 121 can also have a certain waterproof effect on the operating hole 127 when the upper cover 110 is in the open state, thereby improving the waterproof performance of the junction box 100 from dynamic to static, and having an excellent sealing effect.

[0079] Combine Figure 2 and Figure 3 When the upper cover 110 rotates to the first position, a waterproof gap is formed between the water-blocking protrusion 121 and the upper cover 110 ( Figure 3The gap in the middle circle N is the waterproof gap). The waterproof gap separates the upper cover 110 and the water-blocking protrusion 121, reducing the probability of residual water on the upper cover 110 adhering to the water-blocking protrusion 121, and can effectively improve the waterproof performance.

[0080] In order to improve the sealing performance of the sealed connection between the base 120 and the upper cover 110, the first sealing groove 114 on the base 120 can be arranged around the water-retaining protrusion 121, so that the first sealing member 130 on the base 120 can waterproof the water-retaining protrusion 121 located in the middle position (inner circle) of the first sealing member 130 and the operating hole 127.

[0081] In some embodiments, combined Figure 3 ( Figure 3 The first seal 130 is not shown) and Figure 12 The first sealing groove 114 is provided in the upper cover 110. When the upper cover 110 is rotated to the first position, the outer sidewall of the first sealing groove 114 abuts against the outer sidewall of the water retaining protrusion 121, and the aforementioned waterproof gap is defined between the inner sidewall of the first sealing groove 114 and the water retaining protrusion 121. The first sealing member 130 is compressed between the upper cover 110 and the water retaining protrusion 121. Water from the outside is sealed by the first sealing member 130 and cannot enter the base 120. Even if water does enter through the upper cover 110, the waterproof gap between the base 120 and the upper cover 110 reduces the chance of water transferring from the upper cover 110 to the base 120.

[0082] In one embodiment, combining Figure 2 and Figure 15 The first drainage structure 128 and the second drainage structure 115 are designed as arc-shaped surfaces. When a large amount of water accumulates at the sealed connection between the inverter body 200 and the base 120 and the top surface of the base 120 and the upper cover 110, the accumulated water can naturally slide down along the arc-shaped surface due to gravity, forming the first line of defense for the sealing of the junction box 100; the base mounting hole 124 and the base connection hole 122 are designed to be spaced apart and non-through. The base connection hole 122 is set on the outer circle of the first sealing groove 114 of the upper cover 110, and the base mounting hole 124 is set on the outer circle of the second sealing groove Due to the setting of the inner circle of component 123, when the upper cover 110 is opened, the accumulated water reserved at the upper cover connecting hole 111 will not drip directly into the interior of the junction box 100, thereby forming a second line of defense for the sealing of the junction box 100; in addition, when the upper cover 110 is opened, the water-retaining protrusion 121 can isolate the accumulated water remaining on the outer wall of the base 120 outside the operating hole 127, preventing the accumulated water from penetrating into the interior of the junction box 100 along the outer wall of the base 120, thereby forming a third line of defense for the sealing of the junction box 100, with a strong sealing effect, which can meet the waterproof and sealing levels of the inverter.

[0083] Combine Figure 8 and Figure 12 In order to realize the rotation of the upper cover 110 relative to the base 120, a first rotating connection part 125 and a second rotating connection part 112 are respectively provided on the base 120 and the upper cover 110. The first rotating connection part 125 and the second rotating connection part 112 are rotatably connected through a rotating shaft 150. A stop limit part 113 is provided on one of the first rotating connection part 125 and the second rotating connection part 112. When the upper cover 110 is rotated to the second position relative to the base 120, the stop limit part 113 can abut against the outer wall of the other one of the upper cover 110 and the base 120 to prevent the upper cover 110 from rotating too much and colliding with the side wall of the chassis of the inverter body 200.

[0084] Combine Figure 7 and Figure 11 , the first rotating connection part 125 and the second rotating connection part 112 can be Figure 7-12 The columnar protrusion structure shown in the figure has a hinge groove in the middle of one of the first rotating connection part 125 and the second rotating connection part 112, and the other is embedded in the hinge groove. At the same time, the hinge holes of the first rotating connection part 125 and the second rotating connection part 112 are connected, and the rotating shaft 150 can pass through the hinge holes on the first rotating connection part 125 and the second rotating connection part 112 to realize the rotatable connection between the two.

[0085] In addition, the upper cover 110 and the base 120 can also be rotatably connected through a hinge structure. The implementation method of the rotational connection in the embodiment of the present application is only an example and not a limitation, and the embodiment of the present application does not impose any limitation on the implementation method of the rotational connection.

[0086] In one embodiment, combining Figure 12 The stop limit portion 113 can be a limit rib protruding from the outer wall of the second rotating connection portion 112. When the upper cover 110 rotates to the second position relative to the base 120, the limit rib can abut and cooperate with the outer wall of the base 120 to form a limit.

[0087] In order to improve the installation convenience of the junction box 100, the first end of the rotating shaft 150 is provided with an operating portion for the disassembly tool to operate, and the second end is provided with a fixing portion for the connector to fix. Figure 15 The operating portion is provided on the end surface of the first end of the rotating shaft 150 and is in the form of a cross slot or a straight slot. The fixing portion is an external thread provided on the second end of the rotating shaft 150, and the locknut is threadedly engaged with the fixing portion. Alternatively, the operating portion may be a profile provided on the outer wall of the first end of the rotating shaft 150, and the fixing portion may be a pin hole, through which a pin passes to secure the rotating shaft 150.

[0088] Combine Figure 1The inverter provided in the embodiment of the present application includes an inverter body 200 and the inverter sidewall junction box described above. The inverter sidewall junction box is disposed on the outer wall of the inverter body 200, and the accommodating cavity 126 is connected to the inner cavity of the inverter body 200. When the upper cover 110 is flipped over to expose the operating hole 127, an operator can perform spot inspections or wiring operations on the components inside the inverter body 200 through the operating hole 127. Because the inverter includes the inverter sidewall junction box described above, the inverter also has the aforementioned beneficial effects. Other structures refer to the existing technology and are not described here in detail.

[0089] Specifically, the inverter side wall junction box can be set on the outer wall of the inverter body 200 by bolts and / or positioning pins.

[0090] The type of the above-mentioned inverter is selected according to actual conditions. For example, the inverter can be a string inverter, which is not limited in the embodiments of the present application.

[0091] The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present application. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of this application. The specific technical means in some embodiments may be incorporated into another embodiment in part or in whole, unless expressly excluded by another embodiment. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An inverter side wall junction box, characterized in that: It includes a base (120) and an upper cover (110); The base (120) includes an operating hole (127) communicating with the inner cavity of the chassis of the inverter body (200), a base mounting hole (124) connected to the inverter body (200), and a base connection hole (122) connected to the upper cover (110), and the base mounting hole (124) is isolated from the base connection hole (122); The upper cover (110) is rotatably connected to the base (120), and the upper cover (110) includes an upper cover connecting hole (111) adapted to the base connecting hole (122). When the upper cover (110) is rotated to the first position, the upper cover (110) covers the operating hole (127), and the connecting member (140) passes through the upper cover connecting hole (111) and is screwed to the base connecting hole (122).

2. The inverter side wall junction box according to claim 1, characterized in that: At least one of the base (120) and the upper cover (110) comprises a first sealing groove (114), and a first sealing member (130) is disposed in the first sealing groove (114); When the upper cover (110) is rotated to the first position, the first sealing groove (114) is arranged around the operating hole (127), and the first sealing member (130) is compressed and arranged between the base (120) and the upper cover (110).

3. The inverter side wall junction box according to claim 2, characterized in that: When the upper cover (110) is rotated to the first position, the base connection hole (122) is provided on the outer ring of the first sealing member (130).

4. The inverter side wall junction box according to claim 1, characterized in that: The side of the base (120) facing the inverter body (200) comprises a second sealing groove, a second sealing member (123) is embedded in the second sealing groove, and the base mounting hole (124) is provided in the inner circle of the second sealing groove.

5. The inverter side wall junction box according to claim 1, characterized in that: The base mounting hole (124) and the base connecting hole (122) are staggered; or, The base mounting hole (124) and the base connecting hole (122) are coaxially arranged, and both the base mounting hole (124) and the base connecting hole (122) are blind holes.

6. The inverter side wall junction box according to claim 1, characterized in that: The base connection hole (122) is a threaded hole, an internal thread section is provided on the inner wall of the upper cover connection hole (111), the connecting piece (140) is screwed through the upper cover connection hole (111) and is screwed to the base connection hole (122), and the extension length of the external thread section on the connecting piece (140) is not greater than the extension length of the internal thread section on the base connection hole (122).

7. The inverter side wall junction box according to claim 6, characterized in that: There are multiple upper cover connection holes (111), all of which are elliptical holes.

8. The inverter side wall junction box according to any one of claims 1 to 6, characterized in that: The base (120) and / or the upper cover (110) include a drainage structure to prevent water accumulation, the drainage structure including a high portion and a low portion, the high portion and the low portion being transitionally connected via a plane structure or a curved surface structure.

9. The inverter side wall junction box according to claim 8, characterized in that: There is one high part and one low part; or There is one high portion and two low portions, and the high portion is arranged between the two low portions.

10. The inverter side wall junction box according to any one of claims 1 to 6, characterized in that: The base (120) comprises a water-blocking protrusion (121) arranged around the operating hole (127), and the water-blocking protrusion (121) protrudes toward the upper cover (110).

11. The inverter side wall junction box according to claim 10, characterized in that: When the upper cover (110) is rotated to the first position, a waterproof gap is provided between the water retaining protrusion (121) and the upper cover (110), separating the water retaining protrusion (121) and the upper cover (110).

12. The inverter side wall junction box according to any one of claims 1 to 6, characterized in that: The base (120) and the upper cover (110) respectively include a first rotating connection portion (125) and a second rotating connection portion (112), and the first rotating connection portion (125) and the second rotating connection portion (112) are rotatably connected via a rotating shaft (150); One of the first rotating connection part (125) and the second rotating connection part (112) includes a stop limit part (113). When the upper cover (110) is rotated to the second position, the stop limit part (113) abuts against the other of the first rotating connection part (125) and the second rotating connection part (112) to limit the position.

13. The inverter side wall junction box according to any one of claims 1 to 6, characterized in that: The base (120) comprises a positioning pin hole connected to the inverter body (200), and there are a plurality of positioning pin holes, and different positioning pin holes have different hole depths.

14. An inverter, characterized in that: The inverter comprises an inverter body (200) and an inverter side wall junction box according to any one of claims 1 to 13, wherein the inverter side wall junction box is arranged on the outer wall of the box body of the inverter body (200).

15. The inverter according to claim 14, wherein: The inverter side wall junction box is arranged on the outer wall of the inverter body (200) through bolts and / or positioning pins.

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