Photovoltaic grid-connected cabinet of modularized busbar

Abstract

The present application relates to photovoltaic grid-connected cabinet wiring busbar technical field, especially a kind of modularization wiring busbar's photovoltaic grid-connected cabinet, comprising: cabinet, and the inner end is detachably installed with several groups of busbar body;Fine adjustment support component, fixed on the inner end side wall of cabinet, and for the fixing and fine adjustment of the busbar body;Quick plug self-locking component, fixed on the inner end side wall of cabinet, the upper end of the quick plug self-locking component is provided with two connecting sleeves perpendicular to each other, two the connecting sleeve is used to connect two groups of busbar body, and the inserted busbar is fixed by the internal self-locking structure;Fine adjustment structure, it is provided at one end of busbar body, and the fine adjustment structure is used to fine adjustment the length of busbar body.In the cabinet, quick plug self-locking component is fixedly installed, is used to fix two groups of busbar body needing to be connected, avoids the drilling and bolt fixation to busbar, improves the installation efficiency of scene, and is convenient for later maintenance and replacement.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic grid-connected cabinet wiring busbar technology, and in particular to a photovoltaic grid-connected cabinet with a modular wiring busbar. Background Technology

[0002] Inside the photovoltaic grid-connected cabinet, the wiring busbar undertakes the core function of collecting multiple DC or AC currents and realizing power distribution and transmission. Its structural design directly affects the compactness of the cabinet layout, the stability of electrical performance, and the convenience of on-site construction.

[0003] Currently, most photovoltaic grid-connected cabinets on the market still use the traditional fixed busbar structure, which means that copper or aluminum busbars are directly fastened to the insulating support or cabinet frame by bolts.

[0004] However, installing the busbars requires drilling, aligning, and tightening bolts one by one, making the installation process cumbersome. Furthermore, if replacement or expansion is needed later, multiple connection points must be disassembled, which is time-consuming and labor-intensive. Summary of the Invention

[0005] The purpose of this invention is to provide a photovoltaic grid-connected cabinet with modular wiring busbars, which aims to solve the problems mentioned above, such as the cumbersome disassembly and assembly of busbars and their inability to adapt to minor deviations in the layout of components inside the cabinet or on-site installation tolerances.

[0006] The present invention adopts the following technical solution to solve the technical problem: A modular busbar photovoltaic grid-connected cabinet includes: The cabinet has several sets of busbar bodies that can be detachably installed inside. The fine-tuning bracket component is fixed to the inner side wall of the cabinet and is used to fix and fine-tune the busbar body; The quick-connect self-locking component is fixed on the inner side wall of the cabinet. The upper end of the quick-connect self-locking component is provided with two mutually perpendicular connecting sleeves. The two connecting sleeves are used to connect the two sets of busbar bodies and fix the inserted busbar through the internal self-locking structure. A fine-tuning structure is located at one end of the busbar body, and the fine-tuning structure is used to fine-tune the length of the busbar body.

[0007] The present invention also has the following technical features: In one embodiment of the present invention, the upper end of the fine-tuning bracket component is provided with a clamping groove, and a clamping plate is slidably connected to one side of the inner end of the clamping groove via a threaded rod. The lower end of the clamping groove is provided with a buffer structure for buffering the busbar body fixed in the clamping groove.

[0008] In one embodiment of the present invention, the quick-connect self-locking component includes a support rod, one end of which is fixed to the inner end of the cabinet and the other end is fixed to the lower end of the connecting sleeve. Locking grooves are provided on both the upper and lower sides of the inner end of the connecting sleeve.

[0009] In one embodiment of the present invention, the self-locking structure includes a locking frame, the locking frame is U-shaped and the outer walls at both the upper and lower ends are provided with slopes, the other end of the locking frame is fixedly connected to a hexagonal prism, the end of the hexagonal prism away from the locking frame slides out of the outer end of the connecting sleeve and is fixedly installed with a crossbar, and the outer end of the hexagonal prism is sleeved with a second spring.

[0010] In one embodiment of the present invention, a connecting strip is fixedly installed at one end of each locking frame, and a plurality of first wires are fixedly connected between two connecting strips, wherein the length of the first wires is greater than the maximum stroke of the two connecting strips.

[0011] In one embodiment of the present invention, the fine-tuning structure includes a fixed shell and a guide plate. The guide plate has mating grooves on both the upper and lower sides of its outer end. A bimetallic strip is fixedly installed on the outer end of the mating groove. A snap-fit ​​block is fixedly installed on the outer end of the bimetallic strip. When the guide plate is inserted into the inner end of the connecting sleeve and contacts the locking frame, the locking frame slides in the connecting sleeve by compressing the second spring. The upper and lower ends of the locking frame are inserted into the mating groove by ramps, pushing the outer end of the bimetallic strip upward. At the same time, the snap-fit ​​block is inserted into the locking groove, and the connecting strip and the guide plate abut against each other.

[0012] In one embodiment of the present invention, one end of the fixed shell is fixedly sleeved on one end of the busbar body, the guide plate is slidably connected to the other end of the fixed shell, and a plurality of second wires and a third spring are fixedly connected between the guide plate and the busbar body.

[0013] In one embodiment of the present invention, the inner end of the fixed shell is symmetrically provided with limiting grooves on the front and rear sides, and the front and rear ends of the guide plate are symmetrically fixedly installed with limiting blocks, and the outer end of the limiting block is slidably inserted into the limiting groove.

[0014] In one embodiment of the present invention, the fine-tuning bracket component includes a horizontal slide rail and a vertical slide rail. The inner ends of both the horizontal and vertical slide rails are slidably connected to sliders. The horizontal slide rail is fixed to the inner end of the cabinet by a support plate. The upper end of the slider at the inner end of the horizontal slide rail is fixedly connected to the lower end of the vertical slide rail.

[0015] In one embodiment of the present invention, the buffer structure includes a lower support seat and an upper support seat. The lower support seat is fixedly connected to the upper end of the slider located at the inner end of the longitudinal slide rail. The upper support seat is fixed to the lower end of the clamping groove. An adjustment component is provided between the lower support seat and the upper support seat for adjusting the position between the lower support seat and the upper support seat.

[0016] Compared with existing technologies, the beneficial effects of this invention are reflected in: By fixing and installing fine-tuning bracket components inside the cabinet, and supporting and fixing the busbars through the fine-tuning bracket components, the busbars can be finely adjusted in the X / Y / Z three-axis directions to absorb cabinet vibration and minor deviations in the layout of components inside the cabinet or on-site installation tolerances. By setting a fine-tuning structure at one end of the busbar body, the length of the busbar body can be finely adjusted, thus avoiding the busbar body from being subjected to large stresses under thermal expansion and contraction. A quick-locking component is fixedly installed inside the cabinet to secure the two sets of busbars that need to be connected, avoiding drilling holes and fixing with bolts, improving on-site installation efficiency, and facilitating later maintenance and replacement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cabinet structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the cabinet of the present invention; Figure 3 This is a schematic diagram showing the connection between the busbar, the fine-tuning bracket, and the quick-connect self-locking component of the present invention; Figure 4 This is a schematic diagram showing the connection between the busbar and the fine-tuning bracket components of the present invention; Figure 5 This is a schematic diagram of the structure of the fine-tuning support component of the present invention; Figure 6 This is a schematic diagram of the upper structure of the lower support base of the present invention; Figure 7 This is a schematic diagram showing the connection between the busbar and the fine-tuning structure of the present invention; Figure 8 This is a schematic diagram showing the connection between the busbar and the heat dissipation component of the present invention; Figure 9 This is a cross-sectional and unfolded schematic diagram of the fine-tuning structure of the present invention; Figure 10 This is a first-view cross-sectional schematic diagram of the quick-connect self-locking component of the present invention; Figure 11 This is a second-view cross-sectional schematic diagram of the quick-connect self-locking component of the present invention; Figure 12 This is a schematic diagram of the quick-connect self-locking component of the present invention. Figure 13 This is a schematic diagram of the quick-connect self-locking component and guide plate connection of the present invention.

[0018] Explanation of icon numbers: 10. Cabinet; 20. Fine-tuning bracket component; 201. Transverse slide rail; 202. Strip hole; 203. Slider; 204. Threaded post; 205. Longitudinal slide rail; 206. Wing nut; 207. Lower support seat; 208. Upper support seat; 209. Clamping groove; 210. Clamping plate; 211. Threaded rod; 212. Sliding hole; 213. Gear groove; 214. Rotating cylinder; 215. Moving rod; 216. First spring; 217. Moving sleeve; 218. Sliding rod; 219. Sliding bar; 220. Gear plate; 30. Quick-connect self-locking component; 301. Support rod; 302. Connecting sleeve; 303. Locking groove; 304. Locking frame; 305. Hexagonal prism; 306. Second spring; 307. Crossbar; 309. Connecting bar; 310. First wire; 40. Busbar body; 41. Insulating sleeve; 42. Metal shell; 43. Heat dissipation fins; 50. Fine-tuning structure; 51. Fixing shell; 52. Guide plate; 53. Limiting groove; 54. Limiting block; 55. Second guide wire; 56. Third spring; 57. Connecting groove; 58. Bimetallic strip; 59. Snap-fit ​​block; 61. Anti-misalignment groove; 62. Anti-misalignment block. Detailed Implementation

[0019] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0020] The illustrations provided in this embodiment are only intended to illustrate the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] Please see Figures 1 to 13This invention provides a technical solution: a modular busbar photovoltaic grid-connected cabinet, comprising: a cabinet body 10, with several busbar bodies 40 detachably installed at the inner end, and an insulating sleeve 41 provided at the outer end of the busbar body 40, the busbar body 40 being used to connect with electrical components installed inside the cabinet body 10; and a fine-tuning bracket component 20, fixed to the inner side wall of the cabinet body 10, used to fix and fine-tune the busbar bodies 40, allowing the busbar bodies 40 to be finely adjusted in the X / Y / Z three-axis directions to absorb vibration of the cabinet body 10 and installation errors. Photovoltaic power stations are often located in areas with strong winds and sandstorms or earthquake zones, and vibration of the cabinet body 10 can cause fatigue fracture of the rigid busbars; moreover, it is difficult to align during installation, and forced installation generates internal stress. The fine-tuning bracket component 20 can effectively avoid fatigue fracture of the busbars and reduce the internal stress generated during installation.

[0022] The quick-connect self-locking component 30 is fixed on the inner side wall of the cabinet 10. The upper end of the quick-connect self-locking component 30 is provided with two mutually perpendicular connecting sleeves 302. The two connecting sleeves 302 are used to connect the two sets of busbar bodies 40 and fix the inserted busbar through the internal self-locking structure, which improves the efficiency of on-site installation, avoids the risk of loosening and increased contact resistance of traditional bolt connections, and facilitates maintenance and quick disassembly and replacement. The fine-tuning structure 50 is set at one end of the busbar body 40. The fine-tuning structure 50 is used to fine-tune the length of the busbar body 40 to adapt to the slight deviation of the component layout in the cabinet 10 or the on-site installation tolerance.

[0023] In one embodiment, please refer to Figure 4 and Figure 5 The upper end of the fine-tuning bracket component 20 is provided with a clamping groove 209. The upper end of the clamping groove 209 is open, and a baffle is provided at one end. The inner end of the clamping groove 209 is slidably connected to a clamping plate 210 through a threaded rod 211. The threaded rod 211 is threadedly connected to the other side wall of the clamping groove 209, and passes through its side wall and is rotatably connected to the clamping plate 210. The lower end of the clamping plate 210 is slidably connected to the bottom side wall of the clamping groove 209. By placing the busbar body 40 in the clamping groove 209, rotating the threaded rod 211 drives the clamping plate 210 to clamp the busbar body 40 at the lower end of the baffle and fix it. Reversing the threaded rod 211 can remove the busbar body 40, which is convenient for disassembling and assembling the busbar body 40.

[0024] In one embodiment, please refer to Figure 3 - Figure 5The fine-tuning bracket component 20 includes a horizontal slide rail 201 and a vertical slide rail 205. A slider 203 is slidably connected to the inner end of both the horizontal slide rail 201 and the vertical slide rail 205. The cross-sections of the horizontal slide rail 201, the vertical slide rail 205, and the slider 203 are all convex, allowing the slider 203 to slide within the track without falling off. A strip hole 202 is provided on one side wall of both the horizontal slide rail 201 and the vertical slide rail 205. A threaded post 204 is fixedly installed on one end of the slider 203. One end of the threaded post 204 slides through the strip hole 202 and is threadedly connected to a wing nut 206. A washer is fixedly installed on one end of the wing nut 206, and an anti-slip pad is fixedly installed on the other end of the washer. By tightening the wing nut 206, the anti-slip pad contacts the side wall of the track, fixing the slider 203. Reversing the wing nut 206 allows the slider 203 to slide within the track.

[0025] The horizontal slide rail 201 is fixed to the inner end of the cabinet 10 by a support plate. The upper end of the slider 203 at the inner end of the horizontal slide rail 201 is fixedly connected to the lower end of the vertical slide rail 205. The clamping groove 209 is set above the vertical slide rail 205 by a buffer structure. The clamping groove 209 is used to clamp and fix the busbar body 40, thereby fixing the busbar body 40 in the cabinet 10 and finely adjusting the position of the busbar body 40.

[0026] In one embodiment, please refer to Figure 5 - Figure 6 A buffer structure is provided at the lower end of the clamping groove 209 to buffer the busbar body 40 fixed in the clamping groove 209. The buffer structure includes a lower support 207 and an upper support 208, both of which are U-shaped. The lower support 207 is fixedly connected to the upper end of the slider 203 located at the inner end of the longitudinal slide rail 205. The upper support 208 is fixed to the lower end of the clamping groove 209 and is located directly above the lower support 207. An adjustment component is provided between the upper support 208 and the lower support 207. The adjustment component includes sliding holes 212 on the sides of the lower support 207 and the upper support 208 that are far apart from each other. The outer side of the sliding hole 212 of the lower support 207 is... The side is evenly provided with several toothed grooves 213. Two rotating cylinders 214 are rotatably connected between the lower support 207 and the upper support 208. One end of each rotating cylinder 214 is elastically slidably connected to a moving rod 215 through a first spring 216. One moving rod 215 is rotatably connected to the inner wall of one end of the upper support 208, and the other moving rod 215 is slidably connected to the inner wall of the sliding hole 212 on the upper support 208. One end of the moving rod 215 is slidably inserted into the rotating cylinder 214, and one end of the first spring 216 is fixedly connected to the moving rod 215, and the other end is fixedly connected to the bottom inner wall of the rotating cylinder 214. The moving rod 215 slides in the rotating cylinder 214 by squeezing or stretching the first spring 216.

[0027] One end of one rotating cylinder 214 is rotatably connected to one end of the lower support 207, and the other end of the other rotating cylinder 214 is rotatably connected to a movable sleeve 217. One end of the movable sleeve 217 is slidably connected to a sliding hole 212 on the lower support 207 and is limited by two limiting plates, which are fixed to the outer wall of the movable sleeve 217. The two limiting plates are located on the front and rear sides of the sliding hole 212, respectively. The other end of the movable sleeve 217 is elastically connected to a slide bar 219. A slide rod 218 is fixedly installed on one end of the slide bar 219. A return spring is fixedly installed on the end of the slide rod 218 away from the slide bar 219 and slides into the inner end of the movable sleeve 217. The end of the return spring away from the slide rod 218 is connected to the movable sleeve 217. The bottom inner wall of 7 is fixedly connected, the slide bar 219 slides through the slide hole 212 and is fixedly connected to the toothed plate 220. The slide bar 219 slides in the slide hole 212 by stretching the return spring, and at the same time moves the toothed plate 220 on one side of the slide hole 212. When the teeth of the toothed plate 220 and the tooth groove 213 are engaged, the return spring is in a balanced state and fixes the rotating cylinder 214. It is used to adjust and fix the position between the lower support 207 and the upper support 208, thereby adjusting the height of the clamping groove 209. When the clamping groove 209 and the busbar body 40 are vibrated, the moving rod 215 moves in the rotating cylinder 214 by squeezing or stretching the first spring 216 to counteract the vibration force.

[0028] In one embodiment, please refer to Figure 7 - Figure 8 The outer end of the insulating sleeve 41 is provided with a heat dissipation component, which includes a metal shell 42. The metal shell 42 is provided with two parts and is fitted onto the outer end of the insulating sleeve 41 and fixed by screws to form a metal shielding layer. Several heat dissipation fins 43 are evenly fixedly installed on the outer end of the metal shell 42. The width of the heat dissipation fins 43 gradually decreases at the end away from the metal shell 42. According to the principle of heat transfer, the heat dissipation effect is not affected while saving raw materials.

[0029] In one embodiment, please refer to Figure 7 and Figure 9The fine-tuning structure 50 includes a fixed shell 51 and a guide plate 52. The fixed shell 51 is made of insulating material, and the guide plate 52 is made of the same material as the busbar body 40. One end of the fixed shell 51 is fixedly sleeved on one end of the busbar body 40 and fixedly connected to the insulating sleeve 41. The guide plate 52 is slidably connected to the other end of the fixed shell 51. Several second wires 55 and a third spring 56 are fixedly connected between the guide plate 52 and the busbar body 40. The left and right ends of the second wires 55 are respectively welded to the side walls of the busbar body 40 and the guide plate 52. The third spring 56 is located at the upper and lower ends of the several second wires 55, and the left and right ends of the third spring 56 are fixed to the side walls of the busbar body 40 and the guide plate 52 by insulating sheets. The guide plate 52 can slide in the fixed shell 51 by stretching the third spring 56, so as to avoid the busbar body 40 being subjected to large stress under thermal expansion and contraction.

[0030] The inner end of the fixed shell 51 is symmetrically provided with limiting grooves 53 on the front and rear sides. The front and rear ends of the guide plate 52 are symmetrically fixedly installed with limiting blocks 54. The outer end of the limiting block 54 is slidably inserted into the limiting groove 53. When the guide plate 52 slides in the fixed shell 51, the limiting block 54 slides in the limiting groove 53 to limit and guide the guide plate 52. The length of the second wire 55 is greater than the maximum sliding stroke of the limiting block 54, so as to finely adjust the length of the busbar. The upper and lower sides of the outer end of the guide plate 52 are provided with docking grooves 57. The outer end of the docking groove 57 is fixedly installed with a bimetallic strip 58. The outer end of the bimetallic strip 58 is fixedly installed with a snap-fit ​​block 59. The outer end of the bimetallic strip 58 is made of 400 series stainless steel and the inner side is made of copper. One end of the stainless steel extends out of the outer side of the copper and is fixed in the docking groove 57. The stainless steel is elastic and can be deformed and displaced in the docking groove 57 when the bimetallic strip 58 is subjected to external force.

[0031] Since the coefficient of thermal expansion of copper is much greater than that of 400 series stainless steel, when the busbar is energized and heated, it transfers heat to the bimetallic strip 58. The expansion of copper is greater than that of stainless steel, so the bimetallic strip 58 bends outward, thereby applying a pushing force to the locking groove 303 on the snap-fit ​​block 59, making the guide plate 52 more stable.

[0032] In one embodiment, please refer to Figure 7 and Figure 9The quick-connect self-locking component 30 includes a support rod 301, one end of which is fixed to the inner end of the cabinet 10, and the other end is fixed to the lower end of the connecting sleeve 302. The connecting sleeve 302 is made of insulating material, and locking grooves 303 corresponding to the snap-fit ​​blocks 59 are provided on both the upper and lower sides of the inner end of the connecting sleeve 302. The self-locking structure includes a locking frame 304, which is slidably disposed in the inner end of the connecting sleeve 302. The locking frame 304 is U-shaped, and the outer walls at both the upper and lower ends are sloped. When the locking frame 304 moves within the connecting sleeve 302, its upper and lower ends can be inserted into the mating grooves 57, and the double metal... The outer end of the metal piece 58 is pushed upward to allow the snap-fit ​​block 59 to snap into the locking groove 303, thus fixing the guide piece 52 inside the connecting sleeve 302. The other end of the locking frame 304 is fixedly connected to a hexagonal prism 305. The end of the hexagonal prism 305 away from the locking frame 304 slides out of the outer end of the connecting sleeve 302 and is fixedly installed with a crossbar 307. The outer end of the hexagonal prism 305 is sleeved with a second spring 306. One end of the second spring 306 is fixed to the side wall of the locking frame 304, and the other end is fixed to the inner wall of the connecting sleeve 302. The locking frame 304 can slide inside the connecting sleeve 302 by compressing the second spring 306.

[0033] Each locking frame 304 has a connecting strip 309 fixedly installed at one end. When the locking frame 304 is pushed forward and inserted into the mating groove 57, the connecting strip 309 and the guide plate 52 are in close contact. Several first wires 310 are connected between two connecting strips 309. The connecting strips 309 and the busbar are made of the same material. The length of the first wires 310 is greater than the maximum distance that the two connecting strips 309 can travel, so it will not affect the movement of the connecting strips 309 and the locking frame 304. When the connecting strip 309 and the guide plate 52 are in contact, the second spring 306 is in a compressed state. The second spring 306 continuously exerts pressure on the connecting strip 309. 9. Apply a pushing force to keep the connecting strip 309 always in contact with one end of the guide plate 52 for a more stable connection. When it is necessary to remove the guide plate 52 from the connecting sleeve 302, hold the crossbar 307 and compress the second spring 306 again to move the locking frame 304 away from the guide plate 52. The upper and lower ends of the locking frame 304 separate from the mating groove 57. Under the elastic force of the stainless steel itself, the bimetallic strip 58 resets with the snap-fit ​​block 59. The snap-fit ​​block 59 separates from the locking groove 303, and the guide plate 52 can be removed from the connecting sleeve 302, which facilitates quick assembly and disassembly of the guide plate 52 and the busbar body 40.

[0034] In one embodiment, please refer to Figure 10 , Figure 11 and Figure 13An anti-misalignment structure is provided between the guide plate 52 and the connecting sleeve 302. The anti-misalignment structure includes an anti-misalignment groove 61 and an anti-misalignment block 62. The anti-misalignment groove 61 is formed on the inner wall of the outer end of the connecting sleeve 302. A corresponding anti-misalignment block 62 is fixedly installed on the outer side wall of the guide plate 52. When the guide plate 52 is inserted into the inner end of the connecting sleeve 302, the anti-misalignment block 62 slides into the anti-misalignment groove 61. The shape of the anti-misalignment groove 61 on each connecting sleeve 302 ensures that only the correct type of busbar can be inserted into the designated position, preventing misinstallation and wrong phase, and improving the safety of the system.

[0035] When this device is in operation, the fine-tuning bracket component 20 and the quick-connect self-locking component 30 are first fixedly installed in the installation position of the cabinet 10. When it is necessary to install the busbar body 40, the busbar body 40 is inserted into the clamping groove 209, and the guide plate 52 is inserted into the bottom side of the inner end of the connecting sleeve 302. The docking groove 57 at the front end of the guide plate 52 contacts the upper and lower ends of the locking frame 304. The locking frame 304 moves in the connecting sleeve 302 by compressing the second spring 306. Its two ends are inserted into the docking groove 57 under the guidance of the ramp, and the outer side of the bimetallic strip 58 is pushed upward, so that the snap-fit ​​block 59 is inserted into the locking groove 303, thereby fixing the guide plate 52 in the connecting sleeve 302. At this time, the connecting strip 309 and the guide plate 52 are in close contact, connecting and communicating the two sets of busbars inserted into the connecting sleeve 302. Then, the busbar body 40 is fixed by the clamping plate 210, and the installation of the busbar is quickly completed.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A photovoltaic grid-connected cabinet with a modular wiring busbar, characterized in that, include: The cabinet (10) has several sets of busbar bodies (40) that can be detachably installed at the inner end. The fine-tuning bracket component (20) is fixed on the inner side wall of the cabinet (10) and is used to fix and fine-tune the busbar body (40); The quick-connect self-locking component (30) is fixed on the inner side wall of the cabinet (10). The upper end of the quick-connect self-locking component (30) is provided with two mutually perpendicular connecting sleeves (302). The two connecting sleeves (302) are used to connect the two sets of busbar bodies (40) and fix the inserted busbar through the internal self-locking structure. A fine-tuning structure (50) is provided at one end of the busbar body (40), and the fine-tuning structure (50) is used to fine-tune the length of the busbar body (40).

2. The photovoltaic grid-connected cabinet with modular wiring busbar according to claim 1, characterized in that, The upper end of the fine-tuning bracket component (20) is provided with a clamping groove (209). The inner end of the clamping groove (209) is slidably connected to a clamping plate (210) via a threaded rod (211). The lower end of the clamping groove (209) is provided with a buffer structure for buffering the busbar body (40) fixed in the clamping groove (209).

3. The photovoltaic grid-connected cabinet with modular wiring busbar according to claim 1, characterized in that, The quick-connect self-locking component (30) includes a support rod (301), one end of which is fixed to the inner end of the cabinet (10), and the other end is fixed to the lower end of the connecting sleeve (302). The inner end of the connecting sleeve (302) is provided with locking grooves (303) on both the upper and lower sides.

4. The photovoltaic grid-connected cabinet with modular wiring busbar according to claim 3, characterized in that, The self-locking structure includes a locking frame (304), which is U-shaped and has ramps on the outer walls at both the top and bottom ends. A hexagonal prism (305) is fixedly connected to the other end of the locking frame (304). The end of the hexagonal prism (305) away from the locking frame (304) slides out of the outer end of the connecting sleeve (302) and is fixedly installed with a crossbar (307). A second spring (306) is sleeved on the outer end of the hexagonal prism (305).

5. The photovoltaic grid-connected cabinet with modular wiring busbar according to claim 4, characterized in that, Each locking frame (304) has a connecting bar (309) fixedly installed at one end, and a number of first wires (310) are fixedly connected between two connecting bars (309). The length of the first wires (310) is greater than the maximum stroke of the two connecting bars (309).

6. The photovoltaic grid-connected cabinet with modular wiring busbar according to claim 4, characterized in that, The fine-tuning structure (50) includes a fixed shell (51) and a guide plate (52). The guide plate (52) has a docking groove (57) on both the upper and lower sides of its outer end. A bimetallic strip (58) is fixedly installed on the outer end of the docking groove (57). A snap-fit ​​block (59) is fixedly installed on the outer end of the bimetallic strip (58). When the guide plate (52) is inserted into the inner end of the connecting sleeve (302) and contacts the locking frame (304), the locking frame (304) slides in the connecting sleeve (302) by compressing the second spring (306). The upper and lower ends of the locking frame (304) are inserted into the docking groove (57) by the ramp, pushing the outer end of the bimetallic strip (58) upward. At the same time, the snap-fit ​​block (59) is inserted into the locking groove (303), and the connecting strip (309) and the guide plate (52) abut against each other.

7. The photovoltaic grid-connected cabinet with modular wiring busbar according to claim 6, characterized in that, One end of the fixed shell (51) is fixedly sleeved on one end of the busbar body (40), and the guide plate (52) is slidably connected to the other end of the fixed shell (51). Several second wires (55) and a third spring (56) are fixedly connected between the guide plate (52) and the busbar body (40).

8. The photovoltaic grid-connected cabinet with modular wiring busbar according to claim 6, characterized in that, The inner end of the fixed shell (51) is symmetrically provided with limiting grooves (53) on the front and rear sides. The front and rear ends of the guide plate (52) are symmetrically fixedly installed with limiting blocks (54). The outer end of the limiting block (54) is slidably inserted into the limiting groove (53).

9. The photovoltaic grid-connected cabinet with modular wiring busbar according to claim 1, characterized in that, The fine-tuning bracket component (20) includes a horizontal slide rail (201) and a vertical slide rail (205). The inner ends of both the horizontal slide rail (201) and the vertical slide rail (205) are slidably connected to sliders (203). The horizontal slide rail (201) is fixed to the inner end of the cabinet (10) by a support plate. The upper end of the slider (203) at the inner end of the horizontal slide rail (201) is fixedly connected to the lower end of the vertical slide rail (205).

10. The photovoltaic grid-connected cabinet with modular wiring busbar according to claim 2, characterized in that, The buffer structure includes a lower support (207) and an upper support (208). The lower support (207) is fixedly connected to the upper end of the slider (203) located at the inner end of the longitudinal slide rail (205). The upper support (208) is fixed to the lower end of the clamping groove (209). An adjustment component is provided between the lower support (207) and the upper support (208). The adjustment component is used to adjust the position between the lower support (207) and the upper support (208).

Images