A connection device for producing foldable photovoltaic modules

Abstract

The present invention belongs to the technical field of photovoltaic module connection, and specifically relates to a connection device for foldable photovoltaic module production, including a main body, a wire threading hole axially passing through the main body, a boss symmetrically arranged in the middle of the wire threading hole, two support plates symmetrically arranged between the two bosses, the support plate and the boss fixedly connected, two wire pressing devices that cooperate with each other and are centrally symmetrical are arranged in the wire threading hole, slide cylinders are slidably sleeved at both ends of the wire threading hole, and clamping devices for clamping cables are arranged between the slide cylinder and the bosses. By directly placing the ends of the two cables between the two wire pressing devices and directly crimping them, no inner core terminal transition is required in the conductive path, and at the same time, the pressure between the cable ends is increased, so that the conductive contact area is increased, thereby reducing the impedance, and at the same time, the photovoltaic cable is clamped by the clamping device to ensure the stability of the cable, prevent loosening during use, ensure stable transmission of current, and improve service life.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic assembly connection, and in particular to a connection device for producing foldable photovoltaic assemblies. Background Art

[0002] Photovoltaic modules, also known as solar panels, are the core part of solar power generation. They contain multiple modules. Photovoltaic connectors are usually used to connect the modules with photovoltaic cables. The photovoltaic cables used are usually multi-strand electroplated copper core structures.

[0003] Existing photovoltaic connectors usually use crimping pliers to press the stripped cable into the inner core terminal, then insert the inner core terminal into the corresponding male and female terminals, and finally connect the male and female terminals together to achieve the connection of the photovoltaic cable. However, the connection between the cables is transitioned through the inner core terminal, the impedance increases, which increases the current loss, and the pressure between the contact terminals is small. The photovoltaic connector is installed in an outdoor environment and is easily affected by wind and snow pressure, and is easy to loosen, affecting current transmission. For this reason, we propose a connection device for the production of foldable photovoltaic modules. Summary of the invention

[0004] The object of the present invention is to provide a connection device for producing a foldable photovoltaic module to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a connection device for the production of foldable photovoltaic modules, comprising a main body, the main body having a threading hole axially passing through the main body, a boss symmetrically arranged in the middle part of the threading hole, the two bosses being symmetrical about a plane passing through the axis of the threading hole, two support plates symmetrically arranged between the two bosses, the symmetry planes of the two support plates passing through the axis of the threading hole and being perpendicular to the symmetry planes of the two bosses, two wire pressing devices that cooperate with each other and are centrally symmetrical are arranged in the threading hole for pressing the stripped cable, tightening caps are threadedly connected at both ends of the main body, slide cylinders are slidably sleeved at both ends of the threading hole, a clamping device for clamping the cable is arranged between the slide cylinder and the boss, the wire pressing device comprises two guide columns that slide through the support plates, a push plate is fixedly connected to one end of the two guide columns, and a pressure block is fixedly connected to the other end, the pressure block is located between the two support plates, a pre-pressing assembly is arranged between the pressure block and the push plate, and a driving assembly is arranged between the push plate and the main body.

[0006] Preferably, the pre-pressing assembly includes a pressing plate slidably sleeved with the pressing block, a sliding rod is fixed to the pressing plate, a first spring is sleeved on the portion of the sliding rod that slides through the pressing block, and two ends of the first spring are respectively fixedly connected to the pressing block and the sliding rod.

[0007] Preferably, the driving assembly includes a slide rail fixedly connected to the main body, a slider is slidably connected to the slide rail, both sides of the slider extending out of the slide rail are rotatably connected to pressure rods, the ends of the two pressure rods away from the slider are rotatably connected to the push plate, a slide plate slidably connected to the slide rail is fixed on the slider, the side of the slide rail away from the slider is fitted with a slide cylinder, a second spring is fixed on the push plate, and the end of the second spring away from the push plate is fixedly connected to the main body.

[0008] Preferably, the clamping device includes a first locking tooth and a second locking tooth, the first locking tooth is externally threadedly connected to a connecting plate, the connecting plate is threadedly connected to the inner wall of an end of the slide away from the boss, the second locking tooth is externally threadedly connected to a baffle, and a receiving groove is provided on the side of the boss close to the baffle, and the baffle is arranged in the receiving groove.

[0009] Preferably, the sliding rod is slidably sleeved with a sleeve, a conductive glue is provided in the sleeve, the sleeve is penetrated and fixed on the push plate, one end of the sleeve is fixedly connected to the pressure block, and the other end slides through the main body, the end of the sleeve away from the pressure block is threadedly connected with a cap, the sliding rod is provided with a first channel, the pressure plate is provided with a second channel, the first channel and the second channel connect the interior of the sleeve and the surface of the pressure plate, and the surface of the pressure plate is provided with a flow channel.

[0010] Preferably, the width of the portion of the pressing block away from the slide rod gradually decreases in the direction outward from the axis of the wire hole, protrusions are symmetrically fixed on both sides of the pressing block, and the spacing between the two protruding portions of the pressing block is greater than the width of the pressing block at the corresponding position.

[0011] Preferably, the length of the baffle along the direction perpendicular to the support plate is smaller than the length of the accommodating groove along the direction perpendicular to the support plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention places the ends of two cables directly between two crimping devices for direct crimping, so that no inner core terminal transition is required in the conductive path, and at the same time increases the pressure between the cable ends, so that the conductive contact area is increased, thereby reducing impedance. At the same time, the photovoltaic cable is clamped by a clamping device to ensure the stability of the cable, prevent loosening during use, ensure stable transmission of current, and improve service life.

[0014] 2. In the present invention, when the connecting plate is tightened on the first locking tooth and the baffle is tightened on the second locking tooth, the corresponding first locking tooth and the second locking tooth clamp the cable to prevent loosening. At the same time, when the tightening cap is rotated, the slide is pushed to move in the threading hole. After the baffle is blocked by the accommodating groove, the slide drives the first locking tooth to continue to move through the connecting plate. At this time, the cable between the first locking tooth and the second locking tooth is bent, which can effectively resist the shaking pulling force during subsequent use, forming an effective buffer zone, avoiding the cable from being pulled, resulting in separation of the cable ends, and having good anti-loosening and anti-tension effects.

[0015] 3. In the present invention, the two pressing blocks continue to approach each other, the slide bar and the pressing blocks slide relative to each other, the first spring is stretched, and at the same time the slide bar squeezes the internal space of the sleeve, so that the conductive glue flows from the first channel along the second channel to the cable end, and flows along the flow channel to the cable end, thereby enhancing the coating effect, increasing the conductive area, and thus reducing the impedance between the two cable ends.

[0016] 4. In the present invention, the spacing between the protruding parts of the two protruding blocks is greater than the width of the corresponding blocks, so that a certain gap is formed between the protruding blocks and the two sides of the relative blocks. When the protruding blocks on both sides are staggered with the relative blocks, a part of the wire can be bent into the gap, so that the wire at one edge is bent upward and the wire at the other edge is bent downward, so that the combination of the two cable ends is more firm and the anti-loosening effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the overall structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the relative position structure of two wire pressing devices of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the relative positions of the wire pressing device and the support plate of the present invention.

[0021] Figure 5 It is a schematic diagram of the exploded structure of the wire pressing device of the present invention.

[0022] Figure 6 The present invention is a schematic diagram of the structure of placing a stripped cable end on the wire crimping device.

[0023] Figure 7 It is a schematic diagram of the full cross-section structure of the main body of the present invention.

[0024] Figure 8 It is a schematic diagram of the pressing plate structure of the present invention.

[0025] In the figure: 1. main body; 2. threading hole; 3. boss; 4. support plate; 5. tightening cap; 6. slide cylinder; 7. guide column; 8. push plate; 9. pressure block; 10. pressure plate; 11. slide rod; 12. first spring; 13. slide rail; 14. slider; 15. pressure rod; 16. slide plate; 17. second spring; 18. first locking tooth; 19. second locking tooth; 20. connecting plate; 21. baffle; 22. receiving groove; 23. sleeve; 24. cover cap; 25. first channel; 26. second channel; 27. flow channel; 28. boss. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1 — Figure 8 The present invention provides a technical solution: a connection device for the production of foldable photovoltaic modules, comprising a main body 1, wherein the main body 1 is axially penetrated with a threading hole 2, a boss 3 is symmetrically arranged in the middle of the threading hole 2, the two bosses 3 are symmetrical about the plane passing through the axis of the threading hole 2, and observation windows are opened on the two bosses 3, and explosion-proof glass is arranged on the observation windows for observing the connection status of the cable, two support plates 4 are symmetrically arranged between the two bosses 3, the support plates 4 are fixedly connected to the boss 3, the symmetric surfaces of the two support plates 4 pass through the axis of the threading hole 2 and are perpendicular to the symmetric surfaces of the two bosses 3, and two mutually cooperating and centrally symmetric wire pressing devices are arranged in the threading hole 2, and the symmetric center is the intersection of the symmetric surface between the two end faces of the main body 1 and the axis of the threading hole 2, which is used to press the peeled The cable is compressed, both ends of the main body 1 are threadedly connected with tightening caps 5, and both ends of the threading hole 2 are slidably sleeved with slide cylinders 6. The tightening cap 5 and the slide cylinder 6 are provided with corresponding protrusions, so that the tightening cap 5 can push the slide cylinder 6 to slide in the threading hole 2 during rotation, and a clamping device for clamping the cable is provided between the slide cylinder 6 and the boss 3. By placing the ends of the two cables directly between the two crimping devices, direct crimping is performed, so that no inner core terminal transition is required in the conductive path, and at the same time, the pressure between the cable ends is increased, so that the conductive contact area is increased, thereby reducing the impedance. At the same time, the photovoltaic cable is clamped by the clamping device to ensure the stability of the cable, prevent loosening during use, ensure stable current transmission, and improve service life.

[0028] For details, please refer to Figure 2 and Figure 4The wire pressing device includes two guide columns 7 that slide through the support plate 4, one end of the two guide columns 7 is fixedly connected to a push plate 8, and the other end is fixedly connected to a pressure block 9, the pressure block 9 is located between the two support plates 4, a pre-pressing component is provided between the pressure block 9 and the push plate 8, and a driving component is provided between the push plate 8 and the main body 1. The cable connector placed between the two pressure blocks 9 is pre-pressed by the pre-pressing component, and then the push plate 8 is driven by the driving component, and then the pressure block 9 is driven by the guide column 7 to press the cable end.

[0029] For details, please refer to Figure 4 and Figure 5 The pre-pressing component includes a pressing plate 10 which is slidably sleeved with the pressing block 9, a sliding rod 11 is fixed on the pressing plate 10, and a first spring 12 is sleeved on the part of the sliding rod 11 which slides through the pressing block 9. The two ends of the first spring 12 are respectively fixedly connected to the pressing block 9 and the sliding rod 11. The cable ends between the two relative pressing blocks 9 are first pre-pressed, and then in the process of the pressing blocks 9 approaching each other, the first spring 12 is gradually stretched, so that the pressure of the sliding rod 11 on the pressing plate 10 increases, thereby increasing the pressure at the cable joint, and the two cable ends are deformed and close to each other, thereby increasing the contact area between the cable ends, reducing impedance, reducing current loss, and thereby improving the power generation efficiency of the photovoltaic module.

[0030] For details, please refer to Figure 3 , Figure 4 and Figure 5 The driving assembly includes a slide rail 13 fixedly connected to the main body 1, a slider 14 is slidably connected in the slide rail 13, and pressure rods 15 are rotatably connected to both sides of the slider 14 extending out of the slide rail 13, and the ends of the two pressure rods 15 away from the slider 14 are rotatably connected to the push plate 8, and a slide plate 16 slidably connected to the slide rail 13 is fixed on the slider 14, and the side of the slide rail 13 away from the slider 14 is in contact with the slide cylinder 6, and a second spring 17 is fixed on the push plate 8. The second spring 17 is provided with two, and the central axis of the second spring 17 coincides with the axis of the corresponding guide column 7. The second spring 17 is fixedly connected to the main body 1 at one end away from the push plate 8, and the slider 14 is driven to slide in the slide rail 13 by pushing the slide plate 16, thereby driving the pressure rods 15 on both sides to push the push plate 8 to move, and the guide column 7 is driven by the push plate 8 to push the pressure block 9 to move, so as to tighten the cable end.

[0031] For details, please refer to Figure 2 , Figure 3 and Figure 7The clamping device includes a first locking tooth 18 and a second locking tooth 19, both of which are slidably sleeved on the corresponding cables. The first locking tooth 18 is externally threadedly connected to a connecting plate 20, which is threadedly connected to the inner wall of the end of the slide 6 away from the boss 3. The second locking tooth 19 is externally threadedly connected to a baffle 21, and a receiving groove 22 is provided on one side of the boss 3 close to the baffle 21. The baffle 21 is arranged in the receiving groove 22. When the connecting plate 20 is tightened on the first locking tooth 18 and the baffle 21 is tightened on the second locking tooth 19, At this time, the corresponding first locking tooth 18 and the second locking tooth 19 clamp the cable to prevent it from loosening. At the same time, when the tightening cap 5 is rotated, it is pushed to slide in the threading hole 2. After the baffle 21 is blocked by the accommodating groove 22, the slide cylinder 6 drives the first locking tooth 18 to continue to move through the connecting plate 20. At this time, the cable between the first locking tooth 18 and the second locking tooth 19 is bent, which can effectively resist the shaking pulling force during subsequent use, forming an effective buffer zone to avoid the cable being pulled and causing the cable ends to separate, with good anti-loosening and anti-tension effects.

[0032] For details, please refer to Figure 4 , Figure 5 , Figure 6 and Figure 8 The outer sliding sleeve of the sliding rod 11 is slidably sleeved with a sleeve 23, and a conductive glue is arranged inside the sleeve 23. The sleeve 23 penetrates and is fixed on the push plate 8. One end of the sleeve 23 is fixedly connected to the pressing block 9, and the other end slides through the main body 1. The end of the sleeve 23 away from the pressing block 9 is threadedly connected with a cap 24. The sliding rod 11 is provided with a first channel 25, and the pressing plate 10 is provided with a second channel 26. The first channel 25 and the second channel 26 communicate with the inside of the sleeve 23 and the surface of the pressing plate 10. The surface of the pressing plate 10 is provided with a flow channel 27. The flow channel 27 is a multi-layer nested U-shaped and M-shaped cross structure, which can ensure that the conductive glue is more comprehensively coated on the two cable ends. After pre-compression, the two pressing blocks 9 continue to approach, the slide bar 11 and the pressing block 9 slide relative to each other, the first spring 12 is stretched, and the slide bar 11 squeezes the internal space of the sleeve 23, and the conductive glue flows from the first channel 25 along the second channel 26 to the cable end, and flows along the flow channel 27 to the cable end, thereby enhancing the coating effect, increasing the conductive area, and thereby reducing the impedance between the two cable ends.

[0033] For details, please refer to Figure 3 , Figure 4 and Figure 6The width of the part of the pressing block 9 away from the slide bar 11 gradually decreases in the outward direction along the axis of the wire hole. The pressing block 9 is symmetrically fixed with protrusions 28 on both sides. The spacing between the two protrusions 28 protruding from the pressing block 9 is greater than the width of the pressing block 9 at the corresponding position, so that a certain gap is formed between the protrusions 28 and the two sides of the relative pressing block 9. When the protrusions 28 on both sides are staggered with the relative pressing block 9, a part of the wire can be bent into the gap, so that the wire at one end edge is bent upward and the wire at one end edge is bent downward, so that the combination of the two cable ends is more firm and the anti-loosening effect is better.

[0034] For details, please refer to Figure 2 and Figure 7 The length of the baffle 21 along the direction perpendicular to the support plate 4 is smaller than the length of the accommodating groove 22 along the direction perpendicular to the support plate 4, so that there is enough redundant space when two cable ends are stacked, which is convenient for operation.

[0035] In this solution, after the cable end is stripped, the connecting plate 20, the first locking tooth 18 and the second locking tooth are sequentially put on the cable, and the first locking tooth 18 and the second locking tooth 19 are kept at a certain distance as needed, and then the corresponding connecting plate 20 and the baffle 21 are screwed on, and the slide 6 is connected to the connecting plate 20, and then the stripped cable is spread out in a fan shape. The fan-shaped wire ends of the two cables can be crossed together when the number of copper wire strands is small, and can be stacked together when the number of strands is large and it is inconvenient to cross. Through the observation window, the cable end close to the boss 3 side is the wider fan-shaped part, and the lower part is the narrower fan-shaped part of the other cable end. In this way, the two cable ends can be tightly held against each other after being pressed, thereby improving the connection strength.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connection device for producing foldable photovoltaic modules, characterized in that: The invention comprises a main body (1), wherein the main body (1) is axially penetrated by a threading hole (2), a boss (3) is symmetrically arranged in the middle of the threading hole (2), the two bosses (3) are symmetrical about a plane passing through the axis of the threading hole (2), two support plates (4) are symmetrically arranged between the two bosses (3), the symmetric planes of the two support plates (4) pass through the axis of the threading hole (2) and are perpendicular to the symmetric planes of the two bosses (3), two mutually cooperating and centrally symmetrical wire pressing devices are arranged in the threading hole (2) for pressing the stripped cable, the two ends of the main body (1) are threadedly connected with tightening caps (5), the two ends of the threading hole (2) are slidably sleeved with slide cylinders (6), and a clamping device for clamping the cable is arranged between the slide cylinder (6) and the bosses (3); The wire pressing device comprises two guide columns (7) which slide through the support plates (4), one end of the two guide columns (7) is fixedly connected to a push plate (8), and the other end is fixedly connected to a pressure block (9), the pressure block (9) is located between the two support plates (4), a pre-pressing component is provided between the pressure block (9) and the push plate (8), and a driving component is provided between the push plate (8) and the main body (1); The pre-pressing assembly comprises a pressing plate (10) slidably sleeved with a pressing block (9), a sliding rod (11) being fixed on the pressing plate (10), a portion of the sliding rod (11) slidingly penetrating through the pressing block (9) being sleeved with a first spring (12), and two ends of the first spring (12) being fixedly connected to the pressing block (9) and the sliding rod (11) respectively; The driving assembly comprises a slide rail (13) fixedly connected to the main body (1), a slider (14) being slidably connected inside the slide rail (13), both sides of the slider (14) extending out of the slide rail (13) being rotatably connected to pressure rods (15), the ends of the two pressure rods (15) away from the slider (14) being rotatably connected to the push plate (8), a slide plate (16) slidably connected to the slide rail (13) being fixed on the slider (14), the side of the slide rail (13) away from the slider (14) being in contact with the slide cylinder (6), a second spring (17) being fixed on the push plate (8), the end of the second spring (17) away from the push plate (8) being fixedly connected to the main body (1).

2. A connection device for producing foldable photovoltaic modules according to claim 1, characterized in that: The clamping device comprises a first locking tooth (18) and a second locking tooth (19); the first locking tooth (18) is externally threadedly connected to a connecting plate (20); the connecting plate (20) is threadedly connected to an inner wall of an end of the slide tube (6) away from the boss (3); the second locking tooth (19) is externally threadedly connected to a baffle (21); a receiving groove (22) is provided on a side of the boss (3) close to the baffle (21); and the baffle (21) is arranged in the receiving groove (22).

3. A connection device for producing foldable photovoltaic modules according to claim 1, characterized in that: The sliding rod (11) is slidably sleeved with a sleeve (23) outside, and a conductive glue is provided in the sleeve (23). The sleeve (23) is penetrated and fixed on the push plate (8). One end of the sleeve (23) is fixedly connected to the pressure block (9), and the other end slides through the main body (1). The end of the sleeve (23) away from the pressure block (9) is threadedly connected with a cap (24). The sliding rod (11) is provided with a first channel (25), and the pressure plate (10) is provided with a second channel (26). The first channel (25) and the second channel (26) are connected to the inside of the sleeve (23) and the surface of the pressure plate (10). The surface of the pressure plate (10) is provided with a flow channel (27).

4. A connection device for producing foldable photovoltaic modules according to claim 1, characterized in that: The width of the portion of the pressing block (9) away from the slide rod (11) gradually decreases in the direction outward from the axis of the wire hole. Protrusions (28) are symmetrically fixed on both sides of the pressing block (9). The spacing between the portions of the two protrusions (28) protruding from the pressing block (9) is greater than the width of the pressing block (9) at the corresponding position.

5. A connection device for producing foldable photovoltaic modules according to claim 2, characterized in that: The length of the baffle plate (21) along a direction perpendicular to the support plate (4) is shorter than the length of the accommodating groove (22) along a direction perpendicular to the support plate (4).

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