Mounting and fixing system of photovoltaic junction box

Abstract

The utility model relates to an installing and fixing system of a photovoltaic junction box, which comprises a fixing seat and the photovoltaic junction box, the photovoltaic junction box comprises a box body capable of being connected with the fixing seat, the box body comprises a box body with a containing cavity, the fixing seat comprises a bottom plate and a side blocking assembly extending upwards from the bottom plate, and the side blocking assembly is arranged on the bottom plate. A mounting space is defined between the side blocking assembly and the bottom plate, the box body can be contained in the mounting space in a matched mode, the box body and the fixing base are connected through a clamping structure arranged between the box body and the fixing base, the independent fixing base is arranged, the mounting requirements under different scenes can be met, and the mounting efficiency is improved. And the photovoltaic junction box can be conveniently installed, and meanwhile, the photovoltaic junction box can be conveniently maintained or replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and in particular to an installation and fixing system for a photovoltaic junction box. Background Art

[0002] In the prior art, some junction boxes with different functions are connected to photovoltaic modules, so as to eliminate the safety hazards of photovoltaic power generation systems, monitor the power generation status of photovoltaic modules in real time, and improve the power generation efficiency of modules. In actual applications, these junction boxes will encounter different installation scenarios. Some junction boxes are directly installed on modules when photovoltaic modules are produced, some junction boxes are installed when photovoltaic power generation systems are constructed, and some are installed when existing photovoltaic modules are modified. How to make the junction boxes adapt to the installation requirements in different scenarios and facilitate operators to repair or replace the junction boxes has always been an urgent problem to be solved by operators in this field. Utility Model Content

[0003] The utility model aims to provide a new installation and fixing system for a photovoltaic junction box.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a photovoltaic junction box installation and fixing system, including a fixing seat and a photovoltaic junction box, the photovoltaic junction box includes a box body that can be connected to the fixing seat, the box body includes a box body with a receiving cavity, the fixing seat includes a bottom plate, and a side stop assembly extending upward from the bottom plate, an installation space is formed between the side stop assembly and the bottom plate, the box body can be cooperatively received in the installation space, and the box body and the fixing seat are connected to each other by a clamping structure arranged therebetween.

[0005] In some embodiments, the clamping structure includes one or more groups of clamping parts extending in the up-down direction, and the clamping parts are respectively clamped with the box body, wherein all the clamping parts are arranged on one end of the bottom plate or are arranged on both ends of the bottom plate. In other words, the clamping parts are arranged on only one end of the bottom plate, or the clamping parts can be arranged on both ends of the bottom plate, and the number of groups of clamping parts arranged on the ends of the bottom plate where the clamping parts are arranged is one or more groups.

[0006] Optionally, the engaging members are respectively engaged with the box body, each of the engaging members has a first hook on its upper portion, and the box body is provided with a mating portion capable of mating with the first hook. When the engaging members are provided on both ends of the bottom plate, the first hooks of the engaging members on the two ends are arranged opposite to each other.

[0007] Optionally, the box body includes two side walls respectively arranged at two ends, the matching portion is a first groove arranged on the side wall, and the first hook is inserted into the first groove and abuts against the bottom wall of the first groove.

[0008] Optionally, the box body includes two side walls disposed at both ends, the side wall includes two side portions disposed side by side and at intervals, and a connecting rib connected between the two side portions, and the first hook is inserted between the two side portions and engaged on the connecting rib.

[0009] In some embodiments, the box body also includes an extension body extending away from the box body, and the extension body is arranged at one end or both ends of the box body. A through hole extending in the up and down directions is formed between the extension body and the box body, and the engaging part can be arranged in the corresponding through hole in the up and down directions and be engaged with the extension body or the box body.

[0010] Optionally, the extension body includes two extension parts arranged side by side and at intervals and a connecting part arranged between the two extension parts, one end of the extension part is connected to the side wall of the box body, and the through hole is formed between the two extension parts, the connecting part and the box body.

[0011] Optionally, the engaging member and the extension body are engaged with each other, wherein when the engaging member is inserted into the through hole, the engaging member and the connecting portion are engaged with each other.

[0012] Optionally, the engaging member has a second hook located at the upper portion, and the second hook is engaged with the connecting portion in cooperation with each other.

[0013] Optionally, the connecting portion has an operating portion, a fixing portion and a locking portion which are sequentially connected in the up-down direction, wherein the fixing portion and the extending portion are fixed to each other, the operating portion and the locking portion are respectively cantilevered at the upper and lower sides of the extending portion, and the engaging member can cooperate with the locking portion to engage with each other.

[0014] Optionally, the connecting portion includes a first connecting strip connected between the two extension portions, a second connecting strip extending in the up-down direction, and a third connecting strip connected between the first connecting strip and the second connecting strip, wherein the upper portion, the middle portion and the lower portion of the second connecting strip respectively constitute the operating portion, the fixing portion and the locking portion, and the second connecting strip is located on the side of the first connecting strip facing the perforation.

[0015] Optionally, the lower end of the locking portion has a third hook extending toward the through hole, and when the engaging member and the connecting portion are engaged with each other, the second hook and the third hook are hooked and fixed to each other.

[0016] Optionally, the box body has two first side portions that are arranged opposite to each other, and two second side portions that are arranged opposite to each other, the length of the first side portion is greater than the length of the second side portion, and the engaging parts are arranged on both sides of the second side portion.

[0017] In some embodiments, the clamping structure is disposed between the box body and the side stop assembly, wherein the clamping structure includes a first protrusion and a first recessed portion that are engaged with each other, one of the first protrusion and the first recessed portion is disposed on the outer wall of the box body and the other is disposed on the inner wall of the side stop assembly, and when the box body is accommodated in the installation space, the first protrusion and the first recessed portion are correspondingly engaged.

[0018] Optionally, the box body has two first side portions arranged opposite to each other, and two second side portions arranged opposite to each other, the outer wall of each of the first side portions is provided with the first protrusion, and the first protrusion is a convex strip extending along the length direction of the first side portion, and the first recessed portion is arranged on the inner wall of the side stop assembly.

[0019] Optionally, the length of the first side portion is greater than that of the second side portion, and along the length direction of the first side portion, the first protrusions have one group or more than two groups arranged at intervals.

[0020] In some embodiments, the fixing seat also includes a first connecting portion protruding upward from the bottom plate, the first connecting portion has one or more, the first connecting portion is located in the installation space, and when the box body is accommodated in the installation space, the first connecting portion is supported below the box body, and the clip structure is arranged between the box body and the first connecting portion.

[0021] Optionally, the snap-on structure is disposed between the box body and the first connecting portion, wherein the snap-on structure includes a second connecting portion protruding downwardly from the bottom of the box body, the second connecting portion is sleeved on the first connecting portion and snap-connected with the first connecting portion, or the first connecting portion is sleeved on the second connecting portion and snap-connected with the second connecting portion.

[0022] Optionally, a friction-increasing structure is provided on the side walls where the first connecting portion and the second connecting portion cooperate with each other.

[0023] Optionally, the first connecting portion is provided with an insertion hole for inserting the second connecting portion, one of the inner hole wall of the insertion hole and the outer peripheral wall of the second connecting portion is provided with a second protruding portion extending outwardly, and the other is provided with a second recessed portion recessed inwardly, and when the second connecting portion is inserted into the insertion hole, the second protruding portion and the second recessed portion are engaged with each other;

[0024] Alternatively, an insertion hole is provided on the second connecting part for inserting the first connecting part, and one of the inner hole wall of the insertion hole and the outer peripheral wall of the first connecting part is provided with a radial protrusion extending outward, and the other is provided with a radial recessed part recessed inward, and when the first connecting part is inserted into the insertion hole, the radial protrusion and the radial recessed part cooperate and engage with each other.

[0025] In some embodiments, the clamping structure is disposed between the side stop assembly and the box body and is used to clamp the two.

[0026] Optionally, the snap-fit ​​structure includes a fastening member having a snap-fitting portion, and a snap-fitting portion capable of engaging with the snap-fitting portion, one of the fastening member and the snap-fitting portion is arranged on the box body and the other is arranged on the side stop assembly, and when the box body is accommodated in the installation space, the fastening member is located outside the installation space.

[0027] Optionally, the buckling piece is arranged on the box body, and the buckling portion is arranged on the side block assembly, wherein the clamping portion is a third protrusion extending protruding toward the installation space, and the buckling portion is a third recessed portion opened on the side block assembly.

[0028] Optionally, the fastening member extends in the up-down direction, and the fastening member comprises an operating section, a fixing section and a locking section which are sequentially connected in the up-down direction, the fixing section is attached to the box body, and the operating section and the locking section are both arranged at a distance from the outer wall of the box body, the clamping portion is arranged at the lower part of the locking section, and the operating section is cantilevered above the box body;

[0029] Alternatively, the fastening member extends in the up-down direction, and the fastening member includes a locking section, a fixing section and an operating section which are sequentially connected in the up-down direction, the fixing section is attached to the side guard assembly, and the operating section and the locking section are both arranged at a distance from the outer wall of the side guard assembly, the clamping portion is arranged at the upper part of the locking section, and the lower part of the operating section is cantilevered below the side guard assembly.

[0030] Optionally, the box body has two first side portions arranged opposite to each other, and two second side portions arranged opposite to each other, the length of the first side portion is greater than the length of the second side portion, the clip structure is arranged on the first side portion, and along the length extension direction of the first side portion, the clip structure has one group or more than two groups spaced from each other.

[0031] In some embodiments, the snap-fit ​​structure includes a lock movably disposed on the fixing seat, the lock is located outside the installation space, and when the box body is accommodated in the installation space, at least a portion of the lock can be downwardly buckled onto the box body.

[0032] Optionally, the lock is rotatably connected to the fixing seat, wherein the lock includes a mounting portion extending in an up-down direction, and a lock portion extending from one side of the mounting portion toward the mounting space, and the lock portion can be buckled downwardly on the upper portion of the box body.

[0033] Optionally, the lower portion of the mounting portion is rotatably connected to the fixing seat around a rotation centerline extending in a horizontal direction, and the locking portion is in an arc shape with the rotation centerline as the rotation centerline.

[0034] Optionally, a fourth hook is provided on the locking portion, and a limiting boss is provided on the upper portion of the box body, and the fourth hook can be fittedly engaged on the limiting boss.

[0035] Optionally, there is more than one set of locks, and when the box body is accommodated in the installation space, the locks can be buckled on a side edge of the box body.

[0036] Optionally, at least a portion of the mounting portion extends above the locking portion.

[0037] In some embodiments, the side stop assembly has an upper opening facing upward, and the box body is configured to be inserted into the installation space through the upper opening when moving up and down relative to the fixing seat.

[0038] In other embodiments, the box body is configured to cooperate with the installation space when moving in a horizontal direction relative to the fixing seat, and the clamping structure is provided between the side stop assembly and the box body.

[0039] Optionally, the box body also includes two extension bodies which are respectively arranged at both ends of the box body and extend away from the box body, the side stop assembly has a card slot, the card slot has a lateral opening toward one side in the horizontal direction of the fixed seat, and the extension body can be fitted in the card slot.

[0040] Optionally, the side stop assembly includes two side stops that are spaced apart, each of the side stops is provided with the card slot, and when the box body is located in the installation space, the two extension bodies are correspondingly carded in the two card slots.

[0041] Optionally, the lateral openings of the two card slots face the same side of the fixing seat, and the box body is configured to cooperate with the installation space during translation relative to the fixing seat in a horizontal direction.

[0042] Optionally, each of the side stops includes a first side stop portion provided with the card slot, and a second side stop portion connected to the first side stop portion, and the first side stop portion and the second side stop portion form an L-shape, wherein the box body has two first side edges arranged opposite to each other, and two second side edges arranged opposite to each other, and the second side stops of the two side stops are located on the same side of one of the first side edges.

[0043] Optionally, the length of the first side portion is greater than the length of the second side portion, and along the extension direction of the first side portion, the box body is located between the two first side stop portions.

[0044] Optionally, the lateral openings of the two card slots are oriented in opposite directions, and the box body is configured to cooperate with the installation space during a process of rotating relative to the fixing seat in a horizontal direction.

[0045] Optionally, each of the side guards also includes a second side guard portion connected to the first side guard portion, and the first side guard portion and the second side guard portion form an L-shape, wherein the box body has two first side edges arranged opposite to each other, and two second side edges arranged opposite to each other, and the second side guard portions of the two side guards are arranged on different sides of the two first side edges, and the sum of the lengths of the two second side guard portions is less than the length of the first side edges.

[0046] Optionally, the extension body includes an extension portion and a connecting portion arranged on the extension portion, one end of the extension portion is connected to the side wall of the box body and extends outward in a direction away from the box body, the extension direction of the connecting portion is perpendicular to the extension direction of the extension portion, and when the slot and the extension body are engaged with each other, the side stop assembly is engaged on the extension portion and is located between the box body and the connecting portion.

[0047] Optionally, the base plate has a central plate body located on the inner side of the side guard assembly, and / or an extension plate body protruding outward from the outer wall of the side guard assembly. When the base plate has the extension plate body, a plurality of reinforcing ribs are further arranged between the extension plate body and the side guard assembly.

[0048] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art: the installation and fixing system of the utility model, in which a fixing seat independent of the photovoltaic junction box is provided, when the photovoltaic junction box is connected to the photovoltaic module, the fixing seat can be first installed on the back plate of the photovoltaic module, and then the box body of the photovoltaic junction box and the fixing seat are connected together by using a snap-on structure. The installation and fixing system can be applicable to different installation scenarios. When the photovoltaic junction box needs to be repaired or replaced, the photovoltaic junction box can be easily and quickly removed from the fixing seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Attached Figure 1 This is a schematic diagram of the three-dimensional structure of the installation and fixing system of the photovoltaic junction box of Example 1 of the utility model;

[0050] Attached Figure 2 For attachment Figure 1 The enlarged schematic diagram of point A in the middle;

[0051] Attached Figure 3 For attachment Figure 1 A partially exploded schematic diagram of

[0052] Attached Figure 4 For attachment Figure 1 A top view of

[0053] Attached Figure 5 For attachment Figure 1 The front view of the invention is shown in Figure 1, wherein a cross-sectional view is shown at B;

[0054] Attached Figure 6 For attachment Figure 5 The enlarged schematic diagram of point B in the middle;

[0055] Attached Figure 7 It is a schematic diagram of the three-dimensional structure of the installation and fixing system of Example 2;

[0056] Attached Figure 8 For attachment Figure 7 A partially exploded schematic diagram of

[0057] Attached Fig. 9 For attachment Figure 8 The enlarged schematic diagram of the center C;

[0058] Attached Fig.10 For attachment Figure 7 A top view of

[0059] Attached Fig.11 For attachment Figure 7 The main view of the embodiment of the present invention, wherein a cross-sectional view is shown at D;

[0060] Attached Fig.12 For attachment Fig.11 The enlarged schematic diagram of point D in the middle;

[0061] Attached Fig.13 It is a schematic diagram of the three-dimensional structure of the installation and fixing system of Example 3;

[0062] Attached Fig.14 For attachment Fig.13 The enlarged schematic diagram of point E in the middle;

[0063] Attached Fig.15 For attachment Fig.13 A partially exploded schematic diagram of

[0064] Attached Fig.16 For attachment Fig.13 A top view of

[0065] Attached Fig.17 For attachment Fig.13 The front view of the invention is shown in Figure 1, wherein the cross-sectional view is shown at F;

[0066] Attached Fig.18 For attachment Fig.17 The enlarged schematic diagram of F in the middle;

[0067] Attached Fig.19 It is a schematic diagram of the three-dimensional structure of the installation and fixing system of Example 4;

[0068] Attached Fig. 20 For attachment Fig.19 A partially exploded schematic diagram of

[0069] Attached Fig.21 For attachment Fig.19 A top view of

[0070] Attached Fig. 22 For attachment Fig.19 The front view of the embodiment of the present invention, wherein the cross-sectional view is shown at G;

[0071] Attached Fig.23 For attachment Fig. 22 The enlarged schematic diagram of G in the middle;

[0072] Attached Fig.24 It is a partially exploded schematic diagram of the installation and fixing system of Example 5;

[0073] Attached Fig.25 For attachment Fig.24 Schematic diagram from another perspective;

[0074] Attached Fig.26 For attachment Fig.24 A top view of

[0075] Attached Fig. 27 For the attachment Fig.26 A cross-sectional schematic diagram along the HH direction;

[0076] Attached Fig.28It is a partially exploded schematic diagram of the installation and fixing system of Example 6;

[0077] Attached Fig.29 For attachment Fig.28 Schematic diagram from another perspective;

[0078] Attached Fig.30 For attachment Fig.28 A top view of

[0079] Attached Fig.31 For the attachment Fig.30 A schematic cross-sectional view along the middle II direction;

[0080] Attached Fig.32 It is a partially exploded schematic diagram of the installation and fixing system of Example 7;

[0081] Attached Fig.33 For attachment Fig.32 Schematic diagram from another perspective;

[0082] Attached Fig.34 For attachment Fig.33 The enlarged schematic diagram of J in the middle;

[0083] Attached Fig.35 For attachment Fig.32 A top view of

[0084] Attached Fig.36 It is a schematic diagram of the three-dimensional structure of the installation and fixing system of Example 8;

[0085] Attached Fig.37 For attachment Fig.36 A partially exploded schematic diagram of

[0086] Attached Fig.38 For attachment Fig.36 A top view of

[0087] Attached Fig.39 For the attachment Fig.38 A schematic cross-sectional view along the KK axis;

[0088] Attached Fig.40 It is a partially exploded schematic diagram of the installation and fixing system of Example 9;

[0089] Attached Fig.41 For attachment Fig.40 A top view of

[0090] Attached Fig.42 For the attachment Fig.41 Schematic cross-sectional view along the LL direction;

[0091] Attached Fig.43 It is a schematic diagram of the three-dimensional structure of the installation and fixing system of Example 10;

[0092] Attached Fig.44 This is a schematic diagram of a method for connecting a photovoltaic junction box and a fixing base according to this embodiment;

[0093] Attached Fig.45 For attachment Fig.43 A top view of

[0094] Attached Fig.46 For the attachment Fig.45 Schematic cross-sectional view along the MM direction;

[0095] Attached Fig.47 A schematic diagram of the structure of fixing a photovoltaic junction box to a photovoltaic module back plate using the installation and fixing system of the utility model;

[0096] Wherein: 101, photovoltaic junction box; 102, fixing seat; 103, installation space; 200, back plate;

[0097] 1. Box body; 11. First groove; 12. Side wall; 121. Side portion; 122. Connecting rib; 13. First protrusion; 14. Fastening member; 141. Third protrusion; 15. Position limiting boss;

[0098] 2. extension body; 21. extension part; 22. connection part; 221. first connection strip; 222. second connection strip; 222a. operation part; 222b. fixing part; 222c. locking part; 222d. third hook; 223. third connection strip;

[0099] 3. Bottom plate; 31. Center plate; 32. Extension plate;

[0100] 4. Side stop assembly; 40a. Stop plate; 40b. Reinforcement rib; 40c. Drain hole; 40d. Support plate; 41. First recess; 42. Third recess; 43. Side stop; 431. First side stop; 432. Second side stop; 44. Slot;

[0101] 5. Perforation;

[0102] 6. Engaging member; 61. First hook; 62. Second hook;

[0103] 7. first connecting portion; 71. insertion hole; 72. second recessed portion;

[0104] 8. second connecting portion; 81. second protruding portion;

[0105] 9. Locking buckle; 91. Mounting portion; 92. Locking buckle portion; 921. Fourth hook;

[0106] X. Rotation center line. DETAILED DESCRIPTION

[0107] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0108] Referring to the installation and fixing system of the photovoltaic junction box shown in the drawings, it includes a photovoltaic junction box 101 and a fixing seat 102. The photovoltaic junction box 101 includes a box body that can be connected to the fixing seat 102, and the box body includes a box body 1 having a receiving cavity. In some embodiments, the box body also includes two extension bodies 2 that are arranged at both ends of the box body 1 and extend away from the box body 1, wherein the extension bodies 2 are mainly used for cables to pass through and connect with components contained in the box body 1. The fixing seat 102 includes a bottom plate 3 and a side stop assembly 4 extending upward from the bottom plate 3. An installation space 103 is formed between the side guard assembly 4 and the bottom plate 3, and the box body 1 can be accommodated in the installation space 103 in a cooperative manner. It should be noted that: 1. The box body 1 is accommodated in the installation space 103 in a cooperative manner, which means that the box body 1 is located in the installation space 103 in the circumferential direction, rather than that all parts of the box body 1 are located in the installation space 103; 2. The side guard assembly can be a convex rib, a convex strip, a side plate, etc. extending vertically upward from the bottom plate 3, and its size can be adjusted according to actual needs; 3. The installation space 103 is formed between the side guard assembly 4 and the bottom plate 3, which does not mean that the installation space 103 must be located directly above the bottom plate 3, but that the height position of the bottom plate 3 defines the depth of the installation space 103. A clamping structure is provided between the box body and the fixing seat 102, and the box body and the fixing seat 102 are connected to each other through the clamping structure.

[0109] Through the independently arranged fixing seat 102, the fixing seat 102 can be fixed on the back plate of the photovoltaic module during the assembly and production of the photovoltaic module, during the construction of the photovoltaic system, or during the intelligent transformation of the photovoltaic system, and then the photovoltaic junction box 101 is connected to the fixing seat 102 through the snap-on structure, so that whether it is the production of new intelligent components or the intelligent transformation of traditional components, the photovoltaic junction box 101 can be simply and conveniently connected to the photovoltaic power generation system. The above-mentioned snap-on structure is a detachable structure, so that the box body can be removed from the fixing seat 102, so that when the photovoltaic junction box 101 needs to be repaired or replaced, the photovoltaic junction box 101 can be directly removed from the fixing seat 102, which is convenient for operators to operate.

[0110] It should be noted that the above and below descriptions of directions such as up, down, left, right, front, back, inside and outside are all defined for reference according to the directions observed by the operator when the fixing base 102 and the photovoltaic junction box 101 are fixed above the horizontally set photovoltaic module backplane 200. The purpose is only to clearly illustrate the relative position relationship of the various components in the installation and fixing system of the photovoltaic junction box.

[0111] The utility model provides a variety of technical solutions to achieve the above-mentioned purpose, and each technical solution is described in detail below in conjunction with specific implementation methods. Example 1

[0112] See also Figures 1 to 6 As shown, in this embodiment, the side stop assembly 4 has an upper opening facing upward, and the box body 1 is inserted into the installation space 103 through the upper opening when it moves up and down relative to the fixed seat 102. Specifically, when the position of the fixed seat 102 is relatively fixed, the box body 1 is moved downward toward the fixed seat 102, so that it can be inserted into the installation space 103.

[0113] The box body 1 has two first side portions arranged opposite to each other, and two second side portions arranged opposite to each other, and the length of the first side portion is greater than the length of the second side portion. Here, the box body 1 is roughly square, and the extension direction of the first side portion is perpendicular to the extension direction of the second side portion, wherein the first side portion is the length side of the box body 1, and the second side portion is the width side of the box body 1.

[0114] In this embodiment, see Figure 1 As shown, the side baffle assembly 4 includes two baffles 40a which are arranged on different sides of the two first side portions. Here, the baffles 40a extend vertically upward from the bottom plate 3. Here, the baffle 40a is arranged so that the middle portion thereof is recessed downward compared to the end portion thereof, so that at least a portion of the box body 1 is exposed at the recessed portion in the middle portion, so that when repairing the photovoltaic junction box 101, the operator can easily remove the box body from the fixing seat 102; a plurality of reinforcing ribs 40b are also arranged on the outer side of the baffle 40a for ensuring the strength of the side baffle assembly 4, and a drainage hole 40c is arranged at the lower portion of the baffle 40a for draining the accumulated water in the fixing seat 102.

[0115] In this embodiment, the bottom plate 3 has a central plate body 31 located inside the side stop assembly 4, and an extension plate body 32 protruding outward from the outer wall of the side stop assembly 3, and a reinforcing rib 40b is provided between the extension plate body 32 and the stop plate 40a. The above structure of the bottom plate 3 also makes the bottom surface area of ​​the fixing seat 102 larger, and has a larger attachment area when it is connected to the back plate 200 of the photovoltaic module, so that it has better stability when it is bonded to the back plate 200.

[0116] In this embodiment, see Figure 2 , Figure 6 As shown, a through hole 5 extending in the up-down direction is formed between the extension body 2 and the box body 1, and the clamping structure includes two groups of clamping parts 6 respectively arranged at the two ends of the bottom plate 3 and extending in the up-down direction. The two groups of clamping parts 6 can be penetrated in the corresponding through holes 5 in the up-down direction and mutually clamped with the box body 1. Specifically, the extension body 2 includes two extension parts 21 arranged side by side and at intervals and a connecting part 22 arranged between the two extension parts 21. One end of the extension part 21 is connected to the side wall of the box body 1. The extension part 21 is hollow and is mainly used for cables to pass through the receiving cavity of the box body 1 and to be connected with the components received in the box body 1. The above-mentioned through hole 5 is formed between the two extension parts 21, the connecting part 22 and the box body 1.

[0117] In this embodiment, the extension body 2 extends from the second side away from the box body 1 , the two sets of engaging members 6 are disposed on different sides of the two second side, and the two baffles 40 a and the two sets of engaging members 6 are disposed around the installation space 103 .

[0118] The upper part of the engaging member 6 has a first hook 61, and the first hooks 61 of the two sets of engaging members 6 are arranged opposite to each other. The box body 1 is provided with a matching portion that can be matched with the first hook 61. Figure 2 , Figure 6 As shown, here, the mating portion is a first groove 11 arranged on the side wall of the box body 1. When the box body is connected to the fixing seat 102, the first hook 61 is inserted into the first groove 11 and abuts against the bottom wall of the first groove 11, so that the box body 1 is pressed between the bottom plate 3 and the locking member 6 in the up and down directions, thereby being fixed to the fixing seat 102.

[0119] See also Figure 6 As shown, in this embodiment, the upper end of the engaging member 6 has a first inclined surface extending obliquely from top to bottom into the installation space 103. When the photovoltaic junction box 101 is fixedly connected to the fixing seat 102, the box body 1 is inserted downward into the installation space 103, and the two sets of engaging members 6 are respectively inserted into the two through holes 5. In this process, the first inclined surface of the engaging member 6 first slides with the side wall of the second side edge, and the engaging member 6 elastically deforms in the direction away from the installation space 103 until the first hook 61 moves to the first groove 11. At this time, under the action of the elastic force of the engaging member 6 itself, the first hook 61 moves inward and is inserted into the first groove 11, thereby realizing the connection between the box body and the fixing seat 102.

[0120] In other embodiments, the engaging member 6 may be provided at only one end of the bottom plate 3 ; the engaging members 6 provided at the end of the bottom plate 3 may be one group or more groups.

[0121] In this embodiment, the snap-fit ​​structure further includes a buckle 14 having a snap-fit ​​portion, and a snap-fit ​​portion capable of being snap-fitted with the snap-fit ​​portion, one of the buckle 14 and the snap-fit ​​portion being provided on the box body 1 and the other being provided on the side stop assembly 4. When the box body 1 is accommodated in the installation space 103, the buckle 14 is located outside the installation space 103 and is snap-fitted with the snap-fit ​​portion.

[0122] In this embodiment, the snap-fit ​​structure formed by the snap-fit ​​member 14 and the snap-fit ​​portion is disposed on the first side portion, and along the length extension direction of the first side portion, the snap-fit ​​structure has one group or two or more groups spaced from each other. In this way, the first side portion and the second side portion of the box body 1 are snap-fitted by the snap-fit ​​structure, so that the installation of the box body 1 on the fixing seat 102 is more stable. In other embodiments, the snap-fit ​​structure formed by the snap-fit ​​member 14 and the snap-fit ​​portion can also be disposed on the second side portion, and the mutually matching positions thereof and the matching positions of the snap-fit ​​member 6 and the first groove 11 can be staggered.

[0123] In this embodiment, see Figures 1 to 5 As shown, the fastening member 14 is provided on the box body 1, and the fastening portion is provided on the side stop assembly 4. Specifically, the fastening member 14 is provided on the first side edge portion, and the fastening portion is provided on the stop plate 40a outside the first side edge portion, and two fastening members 14 are provided at intervals on each first side edge portion, and correspondingly, the fastening portions on the corresponding side portion of the side stop assembly 4 also have two fastening portions provided at intervals.

[0124] See also Figures 1 to 5 As shown, in this embodiment, the fastening member 14 extends in the up-down direction, and includes an operating section 142, a fixing section 143 and a locking section 144 connected in sequence in the up-down direction, the fixing section 143 is attached to the box body 1, and the operating section 142 and the locking section 144 are both arranged at a distance from the outer wall of the box body 1. The clamping portion is arranged at the lower part of the locking section 144, and the operating section 142 is suspended above the box body 1. By pressing the operating section 142, the locking section 144 can be driven to drive the clamping portion away from the fastening portion through the principle of lever, so that the two are separated from each other, thereby releasing the connection between the box body 1 and the fixing seat 102, which is convenient and quick.

[0125] In this embodiment, the clamping portion is a third protrusion 141 extending toward the installation space 103, and the snap-fitting portion is a third recessed portion 42 provided on the side stop assembly 4. When the box body 1 is accommodated in the installation space 103, the third protrusion 141 and the third recessed portion 42 cooperate and clamp.

[0126] In other embodiments, the buckle 14 may be arranged in the following manner: the buckle 14 includes a locking section 144, a fixing section 143 and an operating section 142 connected in sequence along the up-down direction, the fixing section 143 is attached to the side stop assembly 4, and the operating section 142 and the locking section 144 are both arranged at a distance from the outer wall of the side stop assembly 4, the clamping portion is arranged at the upper part of the locking section 144, and the lower part of the operating section 142 is suspended below the side stop assembly 4. By pressing the operating section 142, the locking section 144 can also be driven to drive the clamping portion away from the buckling portion, thereby releasing the connection between the box body 1 and the fixing seat 102. Example 2

[0127] See also Figures 7 to 12 As shown, the connection method between the box body and the fixing seat 102 in this embodiment is similar to that in embodiment 1. The main difference from embodiment 1 is that the arrangement of the mating portion on the box body 1 for mating with the engaging member 6 is different. Specifically: In this embodiment, the box body 1 includes two side walls 12 arranged at two ends, the side wall 12 includes two side portions 121 arranged side by side and spaced apart, and a connecting rib 122 connected between the two side portions 121. The first hook 61 is inserted between the two side portions 121 and is engaged with the connecting rib 122. Specifically, see Fig. 9 , Fig.12 As shown, when the box body is connected to the fixing seat 102 , the engaging member 6 is inserted into the through hole 5 , and the first hook 61 abuts against the upper side surface of the connecting rib 122 . Example 3

[0128] See also Figures 13 to 18 As shown, the connection mode between the box body and the fixing seat 102 in this embodiment is different from that in embodiment 1 mainly in that: in this embodiment, two sets of engaging members 6 are mutually engaged with the extension body 2. Specifically, when the engaging members 6 are inserted into the through hole 5, the engaging members 6 and the connecting portion 22 are mutually engaged.

[0129] See also Fig.14 , Fig.18 As shown, the engaging member 6 has a second hook 62 at the upper portion. The second hooks 62 of the two sets of engaging members 6 are arranged back to back. When the box body and the fixing seat 102 are connected together, the second hooks 62 abut against the upper surface of the connecting portion 22 . Example 4

[0130] See also Figures 19 to 23As shown, the connection method between the box body and the fixing seat 102 in this embodiment is different from that in Example 3 mainly in that: in this embodiment, in the extension body 2, the connecting part 22 includes a first connecting strip 221 connected between the two extension parts 21, a second connecting strip 222 extending in the up and down directions, and a third connecting strip 223 connected between the first connecting strip 221 and the second connecting strip 222, wherein the third connecting strip 223 is mainly arranged to make the first connecting strip 221 and the second connecting strip 222 bracket have a certain distance, so that the second connecting strip 222 can be bent, so that at least one end thereof can have a certain displacement along the length extension direction of the extension body 2, and the engaging member 6 and the second connecting strip 222 are engaged with each other.

[0131] In this embodiment, see Fig.23 As shown, the second connecting bar 222 has an operating portion 222a, a fixing portion 222b and a locking portion 222c connected in sequence along the up and down directions. Among them, the fixing portion 222b is connected to the third connecting bar 223, and the operating portion 222a and the locking portion 222c are respectively suspended on the upper and lower sides of the third connecting bar 223. The clamping member 6 can be mutually engaged with the locking portion 222c, and the clamping member 6 can be driven to disengage from the locking portion 222c through the operating portion 222a. Specifically, by pressing the operating portion 222a, the operating portion 222a is driven to move toward the box body 1. Using the principle of lever, the fixing portion 222b is the fulcrum, and the locking portion 222c will move in a direction away from the box body 1, thereby releasing the clamping member 6 and the locking portion 222c. In this way, when the photovoltaic junction box 101 needs to be repaired and inspected, the connection between the box body and the fixing seat 102 can be conveniently and quickly released.

[0132] In this embodiment, the second connecting strip 222 is located on the side of the first connecting strip 221 facing the through hole, and the lower part of the second connecting strip 222 has a third hook 222d extending toward the through hole 5. When the engaging member 6 and the connecting portion are engaged with each other, the second hook 62 and the third hook 222d are hooked and fixed to each other. Fig.23 As shown, the third hook 222d is disposed at the lower end of the locking portion 222c.

[0133] See also Fig.23As shown, the upper part of the second hook 62 has a second inclined surface (not shown in the figure), and the lower part of the third hook 222d has a third inclined surface (not shown in the figure), and the second inclined surface and the third inclined surface both extend from top to bottom away from the box body 1. The second hook 62 also has a support surface facing downward, and the third hook 222d also has a support surface facing upward, and the locking portion 222c is arranged at intervals with the first connecting strip 221. In the process of inserting the box body 1 downward into the installation space 103, the second inclined surface and the third inclined surface cooperate to slide, so that the second hook 62 moves toward the installation space 103, and the third hook 222d moves toward the first connecting strip 221. When the box body is connected to the fixing seat 102, the second hook 62 moves to the top of the third hook 222d, and the engaging member 6 and the second connecting strip 222 return to their original state under the action of elastic force, and the support surface and the support surface are pressed against each other. Example 5

[0134] See also Figure 24 to Figure 27 As shown, the connection method between the box body and the fixing seat 102 in this embodiment is different from that in Embodiments 1 to 4. Specifically, in this embodiment, the clamping structure is arranged between the box body 1 and the side stop assembly 4.

[0135] Specifically, the snap-fit ​​structure includes a first protrusion 13 and a first recessed portion 41 that are engaged with each other, one of the first protrusion 13 and the first recessed portion 41 is arranged on the outer wall of the box body 1 and the other is arranged on the inner wall of the side stop assembly 4, and when the box body 1 is accommodated in the installation space 103, the first protrusion 13 and the first recessed portion 41 are correspondingly engaged.

[0136] In this embodiment, a first protrusion 13 is provided on the outer wall of each first side portion, and specifically, the first protrusion 13 is a convex strip extending along the length direction of the first side portion, and the first recessed portion 41 is provided on the inner wall of the side stop assembly 4. Along the length direction of the first side portion, the first protrusion 13 can be a group, or two or more groups arranged at intervals.

[0137] In this embodiment, the side baffle assembly 4 also includes two support plates 40d which are arranged on two different sides of the two second side portions. The two baffles 40a and the two support plates 40d are connected end to end and are arranged around the installation space 103. When the box body 1 is accommodated in the installation space 103, the support plate 40d is supported under the extension body 2, so that the box body and the fixing seat 102 can better maintain stability.

[0138] In this embodiment, the fixing seat 102 also includes a first connection portion 7 protruding upward from the bottom plate 3, and the first connection portion 7 is located in the installation space 103. The first connection portion 7 can be one or more. When the box body 1 is accommodated in the installation space 103, the first connection portion 7 is supported at the bottom of the box body 1, so that the box body 1 and the installation space 103 can be better matched. Example 6

[0139] See also Figure 28 to Figure 31 As shown, the difference between this embodiment and embodiment 5 is mainly that: in this embodiment, no clamping structure is provided between the box body 1 and the side stop assembly 4, but the clamping structure is provided between the box body 1 and the first connecting portion 7. Specifically, the clamping structure includes a second connecting portion 8 protruding downward from the bottom of the box body 1, an insertion hole 71 is provided on the first connecting portion 7, and the second connecting portion 8 is inserted into the insertion hole 71 and is clamped with the first connecting portion 7.

[0140] In this embodiment, the first connecting portion 7 is hollow and has an insertion hole 71 opening upward. The second connecting portion 8 is also hollow. The outer peripheral wall of the second connecting portion 8 is provided with a second protruding portion 81 extending outwardly. The inner wall of the insertion hole 71 is provided with a second recessed portion 72 recessed inwardly. When the second connecting portion 8 is inserted into the insertion hole 71, the second protruding portion 81 and the second recessed portion 72 are engaged with each other. Fig.31 As shown, in this embodiment, the hole wall at the upper part of the insertion hole 71 extends inwardly from top to bottom, so that the insertion hole 71 is wide at the top and narrow at the bottom, which is convenient for the insertion of the second connection part 8. At the same time, the inclined hole wall also provides a guide for the downward insertion of the second connection part 8. Of course, in the specific setting, the second recessed part 72 can also be arranged on the outer peripheral wall of the second connection part 8 and the second protruding part 81 can be arranged on the inner hole wall of the insertion hole. When the second connection part 8 is inserted into the insertion hole 71, the first connection part 7 and the second connection part 8 can also be clamped together through the cooperation between the second protruding part 81 and the second recessed part 72.

[0141] As an alternative to the present embodiment, the second connecting portion 8 can also be sleeved on the first connecting portion 7 and mutually engaged with the first connecting portion 7, and a friction-increasing structure can be provided on the side wall where the first connecting portion 7 and the second connecting portion 8 cooperate with each other. The friction-increasing structure can be in a form similar to the cooperation between the second protrusion 81 and the second recess 72, or in other forms, so that the first connecting portion 7 and the second connecting portion 8 cooperate with each other and are not easy to fall off, so that the two are mutually fixed to achieve engagement, and the stability of the connection between the box body and the fixing seat 102 is improved. In the specific setting, an insertion hole for inserting the first connecting portion 7 can be provided on the second connecting portion 8, and a radial protrusion extending outwardly is provided on one of the inner hole wall of the insertion hole and the outer peripheral wall of the first connecting portion, and a radial recessed portion recessed inwardly is provided on the other. When the first connecting portion 7 is inserted into the insertion hole of the second connecting portion 8, the radial protrusion and the radial recess cooperate with each other to achieve the engagement between the first connecting portion 7 and the second connecting portion 8. Example 7

[0142] See also Figure 32 to Figure 35 As shown, this embodiment is an improvement on the embodiment 6. Specifically, on the basis of the embodiment 6, another set of clamping structures is provided between the box body 1 and the side stop assembly 4, so that the connection between the box body and the fixing seat 102 is more stable and reliable.

[0143] The set of snap-fit ​​structures includes a fastening member 14 having a snap-fitting portion, and a snap-fitting portion capable of being snap-fitted with the snap-fitting portion, one of the fastening member 14 and the snap-fitting portion is provided on the box body 1 and the other is provided on the side stop assembly 4. When the box body 1 is accommodated in the installation space 103, the fastening member 14 is located outside the installation space 103 and is snap-fitted with the snap-fitting portion.

[0144] In this embodiment, the snap-fit ​​structure formed by the snap-fit ​​member 14 and the snap-fit ​​portion is disposed on the first side portion, and along the length extension direction of the first side portion, the snap-fit ​​structure has one group or two or more groups spaced from each other. In this way, the first side portion and the second side portion of the box body 1 are snap-fitted by the snap-fit ​​structure, so that the installation of the box body 1 on the fixing seat 102 is more stable. In other embodiments, the snap-fit ​​structure formed by the snap-fit ​​member 14 and the snap-fit ​​portion can also be disposed on the second side portion.

[0145] In this embodiment, see Figure 32 to Figure 35 As shown, the fastening member 14 is provided on the box body 1, and the fastening portion is provided on the side stop assembly 4. Specifically, the fastening member 14 is provided on the first side edge portion, and the fastening portion is provided on the stop plate 40a outside the first side edge portion, and two fastening members 14 are provided at intervals on each first side edge portion, and correspondingly, the fastening portions on the corresponding side portion of the side stop assembly 4 also have two fastening portions provided at intervals.

[0146] See also Fig.34 As shown, in this embodiment, the fastening member 14 extends in the up-down direction, the middle part of the fastening member 14 is attached to the box body 1, and the fastening member 14 is arranged at a distance from the outer wall of the box body 1. The clamping part is arranged at the lower part of the fastening member 14, and the upper part of the fastening member 14 is suspended above the box body 1. By pressing the upper part of the fastening member 14, the clamping part can be driven away from the fastening part through the principle of lever, so that the two are separated from each other, thereby releasing the connection between the box body 1 and the fixing seat 102, which is convenient and quick.

[0147] In this embodiment, the clamping portion is a third protrusion 141 extending toward the installation space 103, and the snap-fitting portion is a third recessed portion 42 provided on the side stop assembly 4. When the box body 1 is accommodated in the installation space 103, the third protrusion 141 and the third recessed portion 42 cooperate and clamp. Example 8

[0148] See also Figure 36 to Figure 39 As shown, the connection method between the box body and the fixing base 102 in this embodiment is different from that in Examples 1 to 7. Specifically: in this embodiment, the snap-on structure includes a lock 9 movably arranged on the fixing base 102, and the lock 9 is located on the outside of the installation space 103. When the box body 1 is accommodated in the installation space 103, at least a part of the lock 9 can be buckled downward on the box body 1.

[0149] See also Figure 36 to Figure 39 As shown, the lock 9 includes a mounting portion 91 extending in the up-down direction, and a lock portion 92 extending from one side of the mounting portion 91 toward the mounting space 103. The lock portion 92 can be buckled downwardly on the upper portion of the box body 1, so that the box body 1 is restricted between the lock 9 and the fixing seat 102 in the up-down direction.

[0150] The lock buckle 9 is rotatably connected to the fixing seat 102, see Fig.36 , Fig.39 As shown, the lower portion of the mounting portion 91 is rotatably connected to the fixing seat 102 around a rotation center line X extending in the horizontal direction, and the locking portion 92 is in an arc shape with the rotation center line X as the rotation center line.

[0151] There are more than one set of lock buckles 9, preferably two sets, each set of lock buckles 9 includes one or more lock buckles 9, and the lock buckle parts 92 of the two sets of lock buckles 9 are arranged oppositely, and when the box body 1 is accommodated in the installation space 103, the two sets of lock buckles 9 can be buckled on a pair of side parts arranged oppositely on the box body 1. Here, when the box body 1 is accommodated in the installation space 103, the two sets of lock buckles 9 can be buckled on the two first side parts respectively.

[0152] In this embodiment, a fourth hook 921 is provided on the locking portion 92 , and a limiting boss 15 is provided on the upper portion of the box body 1 . The fourth hook 921 can be fitted on the limiting boss 15 to prevent the locking portion 92 from slipping off the upper portion of the box body 1 .

[0153] See also Fig.39 As shown, on the lock buckle 9 of this embodiment, the mounting portion 91 at least partially extends above the locking portion 92. Through the mounting portion 91 extending above the locking portion 92, the operator can complete the snap-fit ​​operation more easily and labor-savingly. At the same time, through this portion of the mounting portion 91, the snap-fit ​​between the lock buckle 9 and the box body 1 can also be released more easily. Example 9

[0154] See also Figure 40 to Figure 42 As shown, the connection method between the box body and the fixing seat 102 in this embodiment is different from that in embodiments 1 to 8. Specifically, in this embodiment, the box body 1 cooperates with the installation space 103 when it moves in the horizontal direction relative to the fixing seat 102. The clamping structure is provided between the side stop assembly 4 and the box body. When the box body 1 moves in the horizontal direction relative to the fixing seat 102, the box body and the fixing seat 102 can be fixed to each other through the cooperation of the clamping structure between the two. Specifically, the side stop assembly 4 has a clamping groove 44, and the clamping groove 44 has a lateral opening facing one side of the fixing seat 102 in the horizontal direction. The extension body 2 can be clamped in the clamping groove 44 in a cooperative manner.

[0155] In this embodiment, the side guard assembly 4 includes two side guards 43 arranged at intervals, each of which is provided with a slot 44. When the box body 1 is located in the installation space 103, the two extension bodies 2 are correspondingly clamped in the two slots 44. Specifically, the extension body 2 includes an extension portion 21 and a connecting portion 22 arranged on the extension portion 21. One end of the extension portion 21 is connected to the side wall of the box body 1 and extends outward in a direction away from the box body 1. The extension direction of the connecting portion 22 is perpendicular to the extension direction of the extension portion 21. When the slot 44 and the extension body 2 are clamped with each other, the side guard assembly 4 is clamped on the extension portion 21 and is located between the box body 1 and the connecting portion 22.

[0156] See also Fig.40 As shown, in this embodiment, the lateral openings of the two card slots 44 face the same side of the fixing seat 102, and the box body 1 cooperates with the installation space 103 during the horizontal translation relative to the fixing seat 102, and during the translation, the extension body 2 can be driven to be inserted into the card slot 44.

[0157] In this embodiment, see Fig.40As shown, the side stop 43 at least includes a first side stop portion 431 with a slot 44, and the first side stop portions 431 of the two side stops 43 are respectively arranged on different sides of the two second side portions, that is, along the length extension direction of the first side portion, the box body 1 is located between the two first side stop portions 431.

[0158] In this embodiment, each side stop 43 further includes a second side stop 432 connected to the first side stop 431, and the first side stop 431 and the second side stop 432 form an L shape, wherein the second side stop 432 of the two side stops 43 are located on the same side of one of the first side portions. In some embodiments, the two second side stops 432 may extend toward each other and be connected together, so that the two side stops 43 together form a U shape. When the box body 1 is located in the installation space 103, a first side portion of the box body 1 and the second side stop 432 abut against each other, thereby improving the stability of the connection between the box body and the fixing seat 102.

[0159] During installation, the box body is moved horizontally toward the fixing seat 102 so that the two extension bodies 2 are correspondingly inserted into the two slots 44 , thereby achieving fixed installation of the box body on the fixing seat 102 , and the installation is also very convenient. Example 10

[0160] See also Figure 43 to Figure 46 As shown, the main difference between this embodiment and embodiment 9 is that in this embodiment, the lateral openings of the two card slots 44 are oriented in opposite directions, and the box body 1 is matched with the installation space 103 during the rotation relative to the fixing seat 102 in the horizontal direction.

[0161] Specifically in this embodiment, each side stop 43 also includes a second side stop 432 connected to the first side stop 431, and the first side stop 431 and the second side stop 432 form an L shape. However, in this embodiment, the second side stop 432 of the two side stops 43 are respectively arranged on different sides of the two first side portions, and the sum of the lengths of the two second side stop portions 432 is less than the length of the first side portion.

[0162] See also Fig.44 As shown, when the photovoltaic junction box 101 is connected to the fixing seat 102, the box body 1 is first inserted between the two second side stoppers 432, and then the box body 1 is rotated so that the two extension bodies 2 at both ends are correspondingly clamped into the two clamping grooves 44. When the box body 1 is located in the installation space 103, the two first side edges of the box body 1 are respectively against the two second side stoppers 432, thereby improving the stability of the connection.

[0163] In summary, if Fig.47As shown, in all the above embodiments, when the photovoltaic junction box 101 is connected to the photovoltaic module, the fixing seat 102 can be first installed on the back plate 200 of the photovoltaic module, and then the photovoltaic junction box 101 and the fixing seat 102 are connected together by using the clamping structure, so that the installation and fixing system can adapt to different installation scenarios. When the photovoltaic junction box 101 is repaired or replaced, the operator can easily and quickly remove the photovoltaic junction box 101 from the fixing seat 102 by releasing the connection of the clamping structure.

[0164] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A photovoltaic junction box installation and fixing system, comprising a fixing seat and a photovoltaic junction box, wherein the photovoltaic junction box comprises a box body that can be connected to the fixing seat, characterized in that: The box body includes a box main body having a receiving cavity, the fixing seat includes a bottom plate, and a side stop assembly extending upward from the bottom plate, an installation space is formed between the side stop assembly and the bottom plate, the box body can be cooperatively received in the installation space, and the box body and the fixing seat are connected to each other by a clamping structure arranged therebetween.

2. The photovoltaic junction box installation and fixing system according to claim 1, characterized in that: The clamping structure includes one or more clamping parts extending in the up-down direction, and the clamping parts are respectively clamped with the box body, wherein all the clamping parts are arranged on one end of the bottom plate or are arranged on both ends of the bottom plate.

3. The photovoltaic junction box installation and fixing system according to claim 2, characterized in that: The engaging members are respectively engaged with the box body, and the upper portion of each engaging member has a first hook, and the box body is provided with a matching portion that can be engaged with the first hook.

4. The photovoltaic junction box installation and fixing system according to claim 3, characterized in that: The box body comprises two side walls respectively arranged at two ends, the matching portion is a first groove arranged on the side wall, and the first hook is inserted in the first groove and abuts against the bottom wall of the first groove.

5. The photovoltaic junction box installation and fixing system according to claim 3, characterized in that: The box body includes two side walls arranged at two ends, the side wall includes two side parts arranged side by side and at intervals, and a connecting rib connected between the two side parts, and the first hook is inserted between the two side parts and engaged on the connecting rib.

6. The photovoltaic junction box installation and fixing system according to claim 2, characterized in that: The box body also includes an extension body extending away from the box body, the extension body is arranged at one end or both ends of the box body, and a through hole extending in the up-down direction is formed between the extension body and the box body, and the engaging member can be arranged in the corresponding through hole in the up-down direction and be engaged with the extension body or the box body.

7. The photovoltaic junction box installation and fixing system according to claim 6, characterized in that: The extension body includes two extension parts arranged side by side and at intervals and a connecting part arranged between the two extension parts, one end of the extension part is connected to the side wall of the box body, and the through hole is formed between the two extension parts, the connecting part and the box body.

8. The photovoltaic junction box installation and fixing system according to claim 7, characterized in that: The engaging member is engaged with the extending body, and when the engaging member is inserted into the through hole, the engaging member is engaged with the connecting portion.

9. The photovoltaic junction box installation and fixing system according to claim 8, characterized in that: The engaging member has a second hook located at the upper portion, and the second hook is engaged with the connecting portion in a cooperative manner.

10. The photovoltaic junction box installation and fixing system according to claim 9, characterized in that: The connecting portion has an operating portion, a fixing portion and a locking portion which are sequentially connected in the up-down direction, wherein the fixing portion and the extending portion are fixed to each other, the operating portion and the locking portion are respectively cantilevered at the upper and lower sides of the extending portion, and the engaging member can cooperate with the locking portion to engage with each other.

11. The photovoltaic junction box installation and fixing system according to claim 10, characterized in that: The connecting portion includes a first connecting strip connected between the two extending portions, a second connecting strip extending in the up-down direction, and a third connecting strip connected between the first connecting strip and the second connecting strip, wherein the upper portion, the middle portion and the lower portion of the second connecting strip respectively constitute the operating portion, the fixing portion and the locking portion, and the second connecting strip is located on the side of the first connecting strip facing the through hole.

12. The photovoltaic junction box installation and fixing system according to claim 10, characterized in that: The lower end of the locking portion has a third hook extending toward the through hole, and when the engaging member and the connecting portion are engaged with each other, the second hook and the third hook are hooked and fixed to each other.

13. The photovoltaic junction box installation and fixing system according to any one of claims 2 to 12, characterized in that: The box body has two first side portions that are arranged opposite to each other, and two second side portions that are arranged opposite to each other. The length of the first side portion is greater than the length of the second side portion, and the engaging member is arranged on both sides of the second side portion.

14. The photovoltaic junction box installation and fixing system according to claim 1, characterized in that: The clamping structure is arranged between the box body and the side stop assembly, wherein the clamping structure includes a first protrusion and a first recessed portion that are engaged with each other, one of the first protrusion and the first recessed portion is arranged on the outer wall of the box body and the other is arranged on the inner wall of the side stop assembly, and when the box body is accommodated in the installation space, the first protrusion and the first recessed portion are correspondingly engaged.

15. The photovoltaic junction box installation and fixing system according to claim 14, characterized in that: The box body has two first side portions arranged opposite to each other, and two second side portions arranged opposite to each other. The outer wall of each of the first side portions is provided with the first protrusion, and the first protrusion is a convex strip extending along the length direction of the first side portion. The first recessed portion is arranged on the inner wall of the side stop assembly.

16. The photovoltaic junction box installation and fixing system according to claim 15, characterized in that: The length of the first side portion is greater than that of the second side portion, and along the length direction of the first side portion, the first protrusions include one group or two or more groups that are spaced apart.

17. The photovoltaic junction box installation and fixing system according to claim 1, characterized in that: The fixing seat also includes a first connecting portion protruding upward from the bottom plate, the first connecting portion has one or more first connecting portions, and the first connecting portion is located in the installation space. When the box body is accommodated in the installation space, the first connecting portion is supported below the box body, and the clamping structure is arranged between the box body and the first connecting portion.

18. The photovoltaic junction box installation and fixing system according to claim 17, characterized in that: The clamping structure is arranged between the box body and the first connecting part, wherein the clamping structure includes a second connecting part protruding downward from the bottom of the box body, the second connecting part is sleeved on the first connecting part and clamped with the first connecting part, or the first connecting part is sleeved on the second connecting part and clamped with the second connecting part.

19. The photovoltaic junction box installation and fixing system according to claim 18, characterized in that: A friction-increasing structure is provided on the side walls where the first connecting portion and the second connecting portion cooperate with each other.

20. The photovoltaic junction box installation and fixing system according to claim 18, characterized in that: The first connecting part is provided with an insertion hole for inserting the second connecting part, one of the inner hole wall of the insertion hole and the outer peripheral wall of the second connecting part is provided with a second protruding part protruding outward, and the other is provided with a second recessed part recessed inward, when the second connecting part is inserted into the insertion hole, the second protruding part and the second recessed part are engaged with each other; Alternatively, an insertion hole is provided on the second connecting part for inserting the first connecting part, and one of the inner hole wall of the insertion hole and the outer peripheral wall of the first connecting part is provided with a radial protrusion extending outward, and the other is provided with a radial recessed part recessed inward, and when the first connecting part is inserted into the insertion hole, the radial protrusion and the radial recessed part cooperate and engage with each other.

21. The photovoltaic junction box installation and fixing system according to claim 1, characterized in that: The clamping structure is arranged between the side stop assembly and the box body and is used for clamping the two.

22. The photovoltaic junction box installation and fixing system according to claim 21, characterized in that: The snap-fit ​​structure includes a fastening member having a snap-fitting portion, and a snap-fitting portion capable of engaging with the snap-fitting portion. One of the fastening member and the snap-fitting portion is arranged on the box body and the other is arranged on the side stop assembly. When the box body is accommodated in the installation space, the fastening member is located outside the installation space.

23. The photovoltaic junction box installation and fixing system according to claim 22, characterized in that: The buckling piece is arranged on the box body, and the buckling portion is arranged on the side stop assembly, wherein the clamping portion is a third protrusion extending toward the installation space, and the buckling portion is a third recessed portion opened on the side stop assembly.

24. The photovoltaic junction box installation and fixing system according to claim 22, characterized in that: The buckle extends in the up-down direction, and comprises an operating section, a fixing section and a locking section which are sequentially connected in the up-down direction, the fixing section is attached to the box body, and the operating section and the locking section are both arranged at a distance from the outer wall of the box body, the clamping portion is arranged at the lower part of the locking section, and the operating section is cantilevered above the box body; Alternatively, the fastening member extends in the up-down direction, and the fastening member includes a locking section, a fixing section and an operating section which are sequentially connected in the up-down direction, the fixing section is attached to the side guard assembly, and the operating section and the locking section are both arranged at a distance from the outer wall of the side guard assembly, the clamping portion is arranged at the upper part of the locking section, and the lower part of the operating section is cantilevered below the side guard assembly.

25. The photovoltaic junction box installation and fixing system according to claim 21, characterized in that: The box body has two first side portions arranged opposite to each other, and two second side portions arranged opposite to each other, the length of the first side portion is greater than the length of the second side portion, the clip structure is arranged on the first side portion, and along the length extension direction of the first side portion, the clip structure has one group or more than two groups spaced from each other.

26. The photovoltaic junction box installation and fixing system according to claim 1, characterized in that: The clamping structure includes a lock buckle movably arranged on the fixing seat, the lock buckle is located outside the installation space, and when the box body is accommodated in the installation space, at least a part of the lock buckle can be buckled downward on the box body.

27. The photovoltaic junction box installation and fixing system according to claim 26, characterized in that: The lock is rotatably connected to the fixing seat, wherein the lock includes a mounting portion extending in the up-down direction, and a lock portion extending from one side of the mounting portion toward the mounting space, and the lock portion can be buckled downwardly on the upper portion of the box body.

28. The photovoltaic junction box installation and fixing system according to claim 27, characterized in that: The lower part of the mounting portion is rotatably connected to the fixing seat around a rotation center line extending in a horizontal direction, and the locking portion is in an arc shape with the rotation center line as the rotation center line.

29. The photovoltaic junction box installation and fixing system according to claim 27, characterized in that: The locking portion is provided with a fourth hook, and the upper portion of the box body is provided with a limiting boss, and the fourth hook can be fittedly buckled on the limiting boss.

30. The photovoltaic junction box installation and fixing system according to claim 27, characterized in that: There is more than one set of lock buckles, and when the box body is accommodated in the installation space, the lock buckles can be buckled on a side edge of the box body.

31. The photovoltaic junction box installation and fixing system according to claim 27, characterized in that: At least a portion of the mounting portion extends above the locking portion.

32. The photovoltaic junction box installation and fixing system according to any one of claims 1 to 31, characterized in that: The side stop assembly has an upper opening facing upward, and the box body is configured to be inserted into the installation space through the upper opening when the box body moves up and down relative to the fixing seat.

33. The photovoltaic junction box installation and fixing system according to claim 1, characterized in that: The box body is configured to achieve cooperation with the installation space when moving in a horizontal direction relative to the fixing seat, and the clamping structure is arranged between the side stop assembly and the box body.

34. The photovoltaic junction box installation and fixing system according to claim 33, characterized in that: The box body also includes two extension bodies which are respectively arranged at both ends of the box body and extend away from the box body. The side stop assembly has a card slot, and the card slot has a lateral opening toward one side in the horizontal direction of the fixing seat. The extension body can be fittedly carded in the card slot.

35. The photovoltaic junction box installation and fixing system according to claim 34, characterized in that: The side guard assembly includes two side guards arranged at an interval, each of the side guards is provided with the clamping slot, and when the box body is located in the installation space, the two extension bodies are correspondingly clamped in the two clamping slots.

36. The photovoltaic junction box installation and fixing system according to claim 35, characterized in that: The lateral openings of the two card slots face the same side of the fixing seat, and the box body is configured to cooperate with the installation space during translation relative to the fixing seat in a horizontal direction.

37. The photovoltaic junction box installation and fixing system according to claim 36, characterized in that: Each of the side stops includes a first side stop portion provided with the card slot, and a second side stop portion connected to the first side stop portion, the first side stop portion and the second side stop portion form an L shape, wherein the box body has two first side edges arranged opposite to each other, and two second side edges arranged opposite to each other, and the second side stops of the two side stops are located on the same side of one of the first side edges.

38. The photovoltaic junction box installation and fixing system according to claim 37, characterized in that: The length of the first side edge portion is greater than that of the second side edge portion, and along the extending direction of the first side edge portion, the box body is located between the two first side stop portions.

39. The photovoltaic junction box installation and fixing system according to claim 35, characterized in that: The lateral openings of the two card slots are oriented in opposite directions, and the box body is configured to cooperate with the installation space during a process of rotating relative to the fixing seat in a horizontal direction.

40. The photovoltaic junction box installation and fixing system according to claim 39, characterized in that: Each of the side guards includes a first side guard portion provided with the card slot, and a second side guard portion connected to the first side guard portion, the first side guard portion and the second side guard portion form an L shape, wherein the box body has two first side edges arranged opposite to each other, and two second side edges arranged opposite to each other, the second side guard portions of the two side guards are arranged on different sides of the two first side edges, and the sum of the lengths of the two second side guard portions is less than the length of the first side edges.

41. The photovoltaic junction box installation and fixing system according to claim 34, characterized in that: The extension body includes an extension portion and a connecting portion arranged on the extension portion, one end of the extension portion is connected to the side wall of the box body and extends outward in a direction away from the box body, and the extension direction of the connecting portion is perpendicular to the extension direction of the extension portion. When the slot and the extension body are engaged with each other, the side stop assembly is engaged on the extension portion and is located between the box body and the connecting portion.

42. The photovoltaic junction box installation and fixing system according to any one of claims 1 to 12, 14 to 16, 21 to 31, and 33 to 41, characterized in that: The base plate has a central plate body located inside the side guard assembly, and / or an extension plate body protruding outward from the outer wall of the side guard assembly. When the base plate has the extension plate body, a plurality of reinforcing ribs are further arranged between the extension plate body and the side guard assembly.

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