Novel hidden wire outlet device for photovoltaic module

Abstract

The invention belongs to the technical field of photovoltaic module wire mounting devices, and particularly relates to a novel hidden wire outlet device for a photovoltaic module, which comprises two electric wires, the end part of one electric wire is connected with a wired connector I, the end part of the other electric wire is connected with a wired connector II, the end parts of the two electric wires are mounted in a photovoltaic junction box, and the end parts of the two electric wires are connected with the wired connector II. The photovoltaic junction box is installed at the position of a back plate of the photovoltaic modules, the multiple photovoltaic modules are connected in series through the multiple wires to form a whole, the photovoltaic junction box comprises an upper cover and a box body, a wire outlet box is installed on the side edge of the box body, a wire adjusting assembly is movably installed in the wire outlet box, and the ends of the wires are adjusted through the wire adjusting assembly in the wire outlet box. And the length of the electric wire outside the box body and the outlet box is controlled, so that the length of the electric wire which is electrically connected is moderate, and the condition that the length is too long or too short is avoided.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaic component line installation devices, in particular to a novel hidden line outlet device for photovoltaic components. Background Art

[0002] Photovoltaic modules are the core components of solar power generation systems. Their main function is to directly convert solar energy into electrical energy. Photovoltaic modules include photovoltaic solar panels. Multiple photovoltaic solar panels are electrically connected to form a whole, thereby directly converting a large amount of solar energy into electrical energy. Photovoltaic junction boxes are installed on the back of photovoltaic solar panels. Multiple photovoltaic solar panels are connected to form a whole through joints between photovoltaic junction boxes on different back panels.

[0003] A patent document with publication number CN218976208U discloses a photovoltaic module wiring device for photovoltaic power generation, including a machine box, a first slide groove is opened on the top of the machine box, a first slider is slidably connected inside the first slide groove, a sliding cover is fixedly connected to the top of the first slider, and the bottom of the sliding cover is in airtight sliding contact with both sides of the top opening of the machine box.

[0004] In the traditional technical solution, multiple photovoltaic solar panels are connected by wires through a photovoltaic junction box installed on their back panels to complete the series connection, so that the multiple photovoltaic solar panels form a whole. In order to avoid the wires of the photovoltaic junction box being too long and causing messy wire ends, the wires of the traditional photovoltaic junction box are usually set to a fixed adaptive length to avoid leakage, damage and mess caused by external influences after the electrical connection between the wire connectors. However, the long photovoltaic junction box wires are easily affected by the processing accuracy when they are processed and shipped out of the factory, resulting in the long photovoltaic junction box wires being of different lengths.

[0005] To this end, the present invention provides a novel hidden wire outlet device for photovoltaic components. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a new type of hidden outlet device for photovoltaic modules described in the present invention includes two wires, one end of the wire is connected to a wire connector 1, and the other end of the wire is connected to a wire connector 2, and the ends of the two wires are installed inside a photovoltaic junction box, and the photovoltaic junction box is installed at the back plate of the photovoltaic module. A plurality of photovoltaic modules are connected in series to form a whole;

[0008] The photovoltaic junction box includes an upper cover and a box body, a terminal box is installed on the side of the box body, and a wire adjustment component is movably installed inside the terminal box. The wire adjustment component is used to adjust the length of the wires outside the terminal box and the box body, and the wire adjustment component plays a role in wire outlet.

[0009] Preferably, a card slot 1 is opened inside the box body, and a plurality of electronic components are installed inside the box body. The plurality of electronic components are electrically connected to each other, and electrical wire terminals are installed at the ends corresponding to the electronic components.

[0010] Preferably, the end of the electric wire is inside the outlet box and connected to the electrical line end, and the end of the electric wire inside the outlet box is adjusted by a wire adjustment component.

[0011] Preferably, a second card slot is provided inside the outlet box, and the upper cover is connected to the box body via the first card slot and the second card slot.

[0012] Preferably, the wire adjustment assembly includes a sliding block slidably installed inside the outlet box, a rack is installed on the side of the sliding block, an adjustment gear is movably installed on the inner bottom of the outlet box, the bottom of the adjustment gear is connected to an adjustment button through an axis, the adjustment button is located on the bottom outside of the box body, and the wire adjustment assembly also includes an adjustment column installed above the sliding block, and the end of the wire is wrapped around the outside of the adjustment column.

[0013] Preferably, the line adjustment assembly further comprises an engagement column slidably mounted on the inner bottom of the outlet box, an air cylinder is mounted on one end of the engagement column, the air cylinder is mounted on the inner bottom of the outlet box, and an air pipe is mounted on the end of the air cylinder.

[0014] Preferably, circular grooves are provided on the inner walls on both sides of the second card slot, and the circular grooves are located outside the circumference of the corresponding electric wires. Inflatable airbags are installed inside the two connected circular grooves, and the inflatable airbags are connected to the air cylinder through an air pipe.

[0015] Preferably, the expansion airbag includes an annular airbag 1 located inside one of the circular grooves and an annular airbag 2 located inside another corresponding circular groove, and arc-shaped airbags are connected to the bottom of the annular airbag 1 and the annular airbag 2.

[0016] Preferably, a mounting clamp and a U-shaped card are installed at the bottom of the upper cover, and a through groove is opened at the bottom of the U-shaped card, and the through groove matches the outer side of the circumference of the electric wire at the corresponding position.

[0017] Preferably, the upper cover is installed at a position directly above the box body by means of a mounting snap ring, a U-shaped card and a through groove.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention discloses a novel hidden outlet device for photovoltaic modules. When two adjacent photovoltaic junction boxes are electrically connected, if the length of the wire is too long, the wire is prone to loosen and fall after the electrical connection. If the length of the wire is too short, the electrical connection may fail. In the present device, a portion of the end of the wire used for electrical connection is located inside the outlet box. The wire adjustment component inside the outlet box adjusts the end of the wire, thereby controlling the length of the wire outside the box body and the outlet box, so that the length of the wire for electrical connection is moderate, thereby avoiding the situation where the length is too long or too short.

[0020] 2. The present invention describes a novel hidden wire outlet device for photovoltaic modules. By turning the adjusting knob forward, the adjusting gear is driven to rotate, and the sliding block and the adjusting column are driven to slide. Part of the wires are wrapped around the outside of the adjusting column in a U-shaped state. After the adjusting column moves, part of the wires are still wrapped around the outside of the adjusting column, but the U-shaped state changes at this time, and the excess wire segments can be exposed on the outside of the photovoltaic junction box. At this time, the total length of the wires exposed on the outside of the photovoltaic junction box becomes longer, that is, the length of the wires is adjusted to avoid close connection of multiple photovoltaic junction boxes. Turning the adjusting knob backward can shorten the total length of the wires exposed on the outside of the photovoltaic junction box.

[0021] 3. The present invention describes a novel hidden wire outlet device for photovoltaic modules. When the gear is adjusted to rotate to increase the exposed length of the wire, the meshing column will be driven to slide, thereby squeezing the air cylinder to inflate the air. The gas enters the expansion airbag through the air tube, causing the expansion airbag to inflate, thereby tightening the connection between the wire, the second card slot and the U-shaped card. When the expansion airbag is inflated, the excess wire segments can be exposed by external pulling force. That is, in this device, while adjusting the exposed length of the wire, the sealing between the photovoltaic junction box and the wire can still be maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is an overall stereogram of the present invention;

[0024] Figure 2 It is a three-dimensional schematic diagram of the upper cover and the box body in the present invention;

[0025] Figure 3 It is a three-dimensional schematic diagram of the centerline adjustment assembly of the present invention;

[0026] Figure 4 This is a schematic diagram of the splitting of the centerline adjustment component of the present invention;

[0027] Figure 5 It is a three-dimensional schematic diagram of the outlet box in the present invention;

[0028] Figure 6 It is a three-dimensional schematic diagram of the inflatable airbag in the present invention;

[0029] Figure 7 It is a three-dimensional schematic diagram of the upper cover in the present invention;

[0030] Figure 8 It is a three-dimensional schematic diagram of the expansion airbag and the through groove in the present invention.

[0031] In the figure: 1. photovoltaic junction box; 2. electric wires; 3. wire connector 1; 4. wire connector 2; 5. upper cover; 51. mounting clamp; 52. U-shaped card; 53. through slot; 6. box body; 61. electronic component; 62. electrical line end; 63. card slot 1; 7. outlet box; 71. card slot 2; 72. circular slot; 73. expansion airbag; 731. annular airbag 1; 732. annular airbag 2; 733. arc-shaped airbag; 8. wire adjustment assembly; 81. adjustment column; 82. sliding block; 821. rack; 83. adjustment button; 84. adjustment gear; 85. engagement column; 86. air cylinder; 87. air pipe. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] Embodiment 1

[0034] like Figure 1-Figure 3 As shown, a new type of hidden outlet device for photovoltaic modules according to an embodiment of the present invention comprises two wires 2, one end of the wire 2 is connected to a wire connector 1 3, and the other end of the wire 2 is connected to a wire connector 2 4. The ends of the two wires 2 are installed inside a photovoltaic junction box 1, and the photovoltaic junction box 1 is installed at the back plate of the photovoltaic module. A plurality of photovoltaic modules are connected in series to form a whole.

[0035] The photovoltaic junction box 1 includes an upper cover 5 and a box body 6. An outlet box 7 is installed on the side of the box body 6. A wire adjustment component 8 is movably installed inside the outlet box 7. The wire adjustment component 8 is used to adjust the length of the wire 2 outside the outlet box 7 and the box body 6. The wire adjustment component 8 plays a wire outlet role.

[0036] Specifically, the photovoltaic junction box 1 is installed on the back panel of the photovoltaic solar panel, and the photovoltaic solar panel is electrically connected to the wire connector 1 3 and wire connector 2 4 of the adjacent photovoltaic solar panel through the wire connector 1 3 and wire connector 2 4 set on its back panel. The length of the traditional electric wire 2 is certain. At this time, when two adjacent photovoltaic junction boxes 1 are electrically connected, if the length of the wire 2 is too long, the wire 2 is prone to loosening and falling after the electrical connection. If the length of the wire 2 is too short, the electrical connection is prone to fail. In the present device, a part of the end of the wire 2 used for electrical connection is inside the outlet box 7, and the wire adjustment component 8 inside the outlet box 7 adjusts the end of the wire 2, thereby controlling the length of the wire 2 outside the box body 6 and the outlet box 7, so that the length of the wire 2 for electrical connection is moderate, thereby avoiding the situation where the length is too long or too short.

[0037] like Figure 2-Figure 3 and Figure 7 As shown, a card slot 63 is opened inside the box body 6, and multiple electronic components 61 are installed inside the box body 6. The multiple electronic components 61 are electrically connected to each other, and electrical wire terminals 62 are installed at the ends of the corresponding electronic components 61. The ends of the wires 2 are located inside the outlet box 7 and connected to the electrical wire terminals 62. The ends of the wires 2 inside the outlet box 7 are adjusted by the wire adjustment component 8.

[0038] A second card slot 71 is provided inside the outlet box 7 , and the upper cover 5 is connected to the box body 6 via the first card slot 63 and the second card slot 71 .

[0039] A mounting snap ring 51 and a U-shaped card 52 are installed at the bottom of the upper cover 5. A through groove 53 is opened at the bottom of the U-shaped card 52. The through groove 53 matches the outer circumference of the wire 2 at the corresponding position. The upper cover 5 is installed directly above the box body 6 through the mounting snap ring 51, the U-shaped card 52 and the through groove 53.

[0040] Specifically, the upper cover 5 is pressed so that the mounting ring 51 is inserted into the first card slot 63, and the U-shaped card 52 is inserted into the second card slot 71, thereby completing the installation of the upper cover 5, the box body 6 and the outlet box 7. The end of the wire 2 is connected to the electrical wire terminal 62, and passes through the outlet box 7 and the second card slot 71 to extend to the outside.

[0041] like Figure 4 As shown, the wire adjustment assembly 8 includes a sliding block 82 slidably installed inside the outlet box 7, a rack 821 is installed on the side of the sliding block 82, an adjustment gear 84 is movably installed on the inner bottom of the outlet box 7, and an adjustment button 83 is connected to the bottom of the adjustment gear 84 through an axis. The adjustment button 83 is located on the bottom outer side of the box body 6. The wire adjustment assembly 8 also includes an adjustment column 81 installed above the sliding block 82, and the end of the wire 2 is wrapped around the outside of the adjustment column 81.

[0042] Specifically, when it is necessary to adjust the length of the wire 2 outside the photovoltaic junction box 1, the adjusting knob 83 is turned forward to drive the adjusting gear 84 to rotate, drive the sliding block 82 and the adjusting column 81 to slide, and part of the wire 2 is wrapped around the outside of the adjusting column 81 in a U-shaped state. After the adjusting column 81 moves, part of the wire 2 is still wrapped around the outside of the adjusting column 81, but the U-shaped state changes at this time, and its excess line segments can be exposed on the outside of the photovoltaic junction box 1. At this time, the total length of the wire 2 exposed on the outside of the photovoltaic junction box 1 becomes longer, that is, the length of the wire 2 is adjusted to avoid the close connection of multiple photovoltaic junction boxes 1. Reversely turning the adjusting knob 83 can shorten the total length of the wire 2 exposed on the outside of the photovoltaic junction box 1.

[0043] like Figure 4-Figure 5 As shown, the line adjustment assembly 8 also includes an engagement column 85 slidably mounted on the inner bottom of the outlet box 7, an air cylinder 86 is mounted on one end of the engagement column 85, the air cylinder 86 is mounted on the inner bottom of the outlet box 7, and an air pipe 87 is mounted on the end of the air cylinder 86.

[0044] Circular grooves 72 are provided on the inner walls of both sides of the second slot 71 . The circular grooves 72 are located outside the circumference of the corresponding wire 2 . An inflatable airbag 73 is installed inside the two connected circular grooves 72 . The inflatable airbag 73 is connected to the air cylinder 86 through an air pipe 87 .

[0045] Specifically, the wire 2 extends through the outlet box 7, and in the present device, circular grooves 72 are provided on the inner walls of both sides of the second card slot 71, so that the expansion airbag 73 is inside the circular groove 72 and does not affect the installation of the wire 2. The conventional photovoltaic junction box 1 that can adjust the outlet wire will affect the sealing between the wire 2 and the photovoltaic junction box 1 after adjusting the length of the wire 2, thereby causing the photovoltaic junction box 1 to leak liquid when working, thereby affecting the overall working efficiency of the photovoltaic junction box 1 and damaging the working life of the photovoltaic junction box 1. In the present device, the adjustment When the gear 84 rotates to increase the exposed length of the wire 2, it will drive the meshing column 85 to slide, and then squeeze the air cylinder 86, so that the air cylinder 86 has an inflating effect, and the gas enters the expansion airbag 73 through the air pipe 87, so that the expansion airbag 73 is inflated, thereby tightening the connection between the wire 2, the second card slot 71 and the U-shaped card 52. When the expansion airbag 73 is inflated, the excess wire segment of the wire 2 can be exposed by external tension, that is, in this device, while adjusting the exposed length of the wire 2, the sealing between the photovoltaic junction box 1 and the wire 2 can still be maintained.

[0046] Embodiment 2

[0047] like Figure 6-Figure 8As shown, compared with Example 1, another embodiment of the present invention is: the expansion airbag 73 includes an annular airbag 1 731 located inside a circular groove 72 and an annular airbag 2 732 located inside another corresponding circular groove 72, and the bottoms of the annular airbags 1 731 and 732 are connected with arc-shaped airbags 733.

[0048] Specifically, when the annular airbag 1 731, the annular airbag 2 732 and the arc-shaped airbag 733 are not inflated, they do not contact the outer side of the circumference of the wire 2, and the arc-shaped airbag 733 does not affect the downward pressure of the U-shaped card 52 inserted into the second card slot 71. When the annular airbag 1 731 and the annular airbag 2 732 are inflated, the adjacent two sides of the annular airbag 1 731 and the annular airbag 2 732 will be in close contact with the two sides of the U-shaped card 52 inserted into the second card slot 71, thereby enhancing the sealing between the outlet box 7 and the wire 2, and the upper side of the arc-shaped airbag 733 is in close contact with the lower side of the circumference of the corresponding wire 2, and the two sides of the arc-shaped airbag 733 are in close contact with the inner wall of the bottom of the through groove 53, thereby further enhancing the sealing between the outlet box 7 and the wire 2, so that the leaked liquid will not enter through the connection between the photovoltaic junction box 1 and the wire 2, and the exposed length of the wire 2 can be adjusted without affecting the sealing.

[0049] Working principle: The photovoltaic junction box 1 is installed on the back of the photovoltaic solar panel. The photovoltaic solar panel is electrically connected to the wire connector 1 3 and wire connector 2 4 of the adjacent photovoltaic solar panel through the wire connector 1 3 and wire connector 2 4 set on its back. The length of the traditional wire 2 is fixed. At this time, when two adjacent photovoltaic junction boxes 1 are electrically connected, if the length of the wire 2 is too long, the wire 2 is prone to loosening and falling after the electrical connection. If the length of the wire 2 is too short, it is easy to fail to electrically connect. In this device, a part of the end of the wire 2 used for electrical connection is inside the outlet box 7. The wire adjustment component 8 inside the outlet box 7 adjusts the end of the wire 2, thereby controlling the length of the wire 2 outside the box body 6 and the outlet box 7, so that the wire for electrical connection 2 is of moderate length, thereby avoiding the situation that the length is too long or too short. When it is necessary to adjust the length of the wire 2 outside the photovoltaic junction box 1, the adjusting knob 83 is turned forward to drive the adjusting gear 84 to rotate, drive the sliding block 82 and the adjusting column 81 to slide, and part of the wire 2 is wound around the outside of the adjusting column 81 in a U-shaped state. After the adjusting column 81 moves, part of the wire 2 is still wound around the outside of the adjusting column 81, but at this time the U-shaped state changes, and its redundant line segment can be exposed outside the photovoltaic junction box 1. At this time, the total length of the wire 2 exposed outside the photovoltaic junction box 1 becomes longer, that is, the length of the wire 2 is adjusted to avoid the close connection of multiple photovoltaic junction boxes 1. The total length of the wire 2 exposed outside the photovoltaic junction box 1 can be shortened by turning the adjusting knob 83 in the reverse direction.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A novel hidden wire outlet device for photovoltaic modules, comprising two wires (2), one end of the wire (2) being connected to a wire connector 1 (3), and the other end of the wire (2) being connected to a wire connector 2 (4), characterized in that: The ends of the two electric wires (2) are installed inside a photovoltaic junction box (1), the photovoltaic junction box (1) is installed at the back plate of a photovoltaic module, and a plurality of photovoltaic modules are connected in series to form a whole; The photovoltaic junction box (1) comprises an upper cover (5) and a box body (6); a terminal box (7) is installed on the side of the box body (6); a wire adjustment component (8) is movably installed inside the terminal box (7); the wire adjustment component (8) is used to adjust the length of the wire (2) outside the terminal box (7) and the box body (6); the wire adjustment component (8) plays a role in wire outlet.

2. According to claim 1, a novel hidden outlet device for photovoltaic modules is characterized in that: A card slot (63) is provided inside the box body (6), and a plurality of electronic components (61) are installed inside the box body (6). The plurality of electronic components (61) are electrically connected to each other, and electrical wire terminals (62) are installed at the ends of the corresponding electronic components (61).

3. According to claim 2, a new type of hidden outlet device for photovoltaic modules is characterized in that: The end of the electric wire (2) is located inside the outlet box (7) and is connected to the electrical wire terminal (62), and the end of the electric wire (2) located inside the outlet box (7) is adjusted via the wire adjustment component (8).

4. According to claim 2, a new type of hidden outlet device for photovoltaic modules is characterized in that: A second card slot (71) is provided inside the outlet box (7), and the upper cover (5) is connected to the box body (6) via the first card slot (63) and the second card slot (71).

5. According to claim 1, a new type of hidden outlet device for photovoltaic modules is characterized in that: The wire adjustment assembly (8) comprises a sliding block (82) slidably mounted inside the outlet box (7), a rack (821) being mounted on the side of the sliding block (82), an adjustment gear (84) being movably mounted on the inner bottom of the outlet box (7), the bottom of the adjustment gear (84) being connected to an adjustment button (83) via a shaft, the adjustment button (83) being located outside the bottom of the box body (6), the wire adjustment assembly (8) further comprises an adjustment column (81) mounted above the sliding block (82), and an end of the wire (2) is wound around the outside of the adjustment column (81).

6. The novel hidden outlet device for photovoltaic modules according to claim 5 is characterized in that: The line adjustment assembly (8) further comprises an engagement column (85) slidably mounted on the inner bottom of the outlet box (7), an air cylinder (86) being mounted on one end of the engagement column (85), the air cylinder (86) being mounted on the inner bottom of the outlet box (7), and an air pipe (87) being mounted on the end of the air cylinder (86).

7. A novel hidden outlet device for photovoltaic modules according to claim 6, characterized in that: Circular grooves (72) are provided on the inner walls of both sides of the second clamping groove (71), and the circular grooves (72) are located outside the circumference of the corresponding electric wire (2). An expansion air bag (73) is installed inside the two connected circular grooves (72), and the expansion air bag (73) is connected to the air cylinder (86) through an air pipe (87).

8. The novel hidden outlet device for photovoltaic modules according to claim 7 is characterized in that: The expansion airbag (73) comprises an annular airbag 1 (731) located inside one of the circular grooves (72) and an annular airbag 2 (732) located inside another corresponding circular groove (72), and the bottoms of the annular airbag 1 (731) and the annular airbag 2 (732) are connected to arc-shaped airbags (733).

9. A novel hidden outlet device for photovoltaic modules according to claim 8, characterized in that: The bottom of the upper cover (5) is provided with a mounting clamp ring (51) and a U-shaped card (52), the bottom of the U-shaped card (52) is provided with a through groove (53), and the through groove (53) matches the outer circumference of the electric wire (2) at a corresponding position.

10. A novel hidden outlet device for photovoltaic modules according to claim 9, characterized in that: The upper cover (5) is installed at a position directly above the box body (6) by means of a mounting snap ring (51), a U-shaped card (52) and a through groove (53).

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