High-stability wiring terminal and photovoltaic junction box

Abstract

The invention relates to the technical field of photovoltaic junction boxes, discloses a high-stability wiring terminal and a photovoltaic junction box, and solves the problem that the existing photovoltaic junction box and wiring terminal are poor in use sealing performance. The high-stability wiring terminal comprises a junction box body, a wiring terminal body I and a wiring terminal body II, the junction box body is composed of a box body and a sealing cover body, the bottom end of the box body is provided with a lead-in wire and a lead-out wire, the bottom end in the box body is provided with an intelligent air pump, the two sides of the bottom end of the box body are provided with a first air bag assembly and a second air bag assembly respectively, and first air sealing assemblies are arranged between the first air bag assembly and the junction box body and between the first air bag assembly and the first wiring terminal body. A second air sealing assembly is arranged between the second air bag assembly and the junction box body and between the second air bag assembly and the second wiring terminal body. The intelligent air pump is connected with the first air bag assembly and the second air bag assembly through one-way air supply pipes. According to the photovoltaic junction box and the wiring terminal, the overall sealing performance can be improved, meanwhile, a cable buffering effect is achieved, the service life is prolonged, and the use stability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic junction boxes, and in particular relates to a highly stable connection terminal and a photovoltaic junction box. Background Art

[0002] The photovoltaic junction box is a connection device between the solar cell array composed of solar cell modules and the solar charging control device. Its main function is to connect and protect solar photovoltaic modules, connect the power generated by solar cells to external lines, and conduct the current generated by photovoltaic modules. The terminal block is an accessory component of the photovoltaic junction box and is used for cable connection.

[0003] Photovoltaic junction boxes and terminal blocks are usually used outdoors, so the overall sealing of photovoltaic junction boxes and terminal blocks is crucial. Currently, photovoltaic junction boxes and terminal blocks only achieve sealing through internal sealing gaskets. When exposed to wind and sun for a long time, it is difficult to effectively ensure the sealing. The entry of rain and dust will affect its service life. In addition, the cables on the existing photovoltaic junction boxes do not have a buffering protection function and are easily damaged when subjected to external forces. Therefore, the present application proposes a highly stable terminal block and a photovoltaic junction box. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a highly stable wiring terminal and a photovoltaic junction box, which effectively solves the problem of poor sealing of the existing photovoltaic junction boxes and wiring terminals.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a highly stable terminal and a photovoltaic junction box, comprising a junction box body, a terminal body one and a terminal body two, the junction box body consisting of a box body and a sealing cover body, the sealing cover body is sleeved on the top of the box body, the interior of the box body forms an equipment room, support seats are fixedly arranged on both sides of the bottom of the box body, lead-in wires and lead-out wires are inserted into the bottom of the box body, an intelligent air pump is arranged in the middle position of the bottom of the box body, airbag components one and airbag components two connected to the support seats and matching with the lead-in wires and the lead-out wires are respectively arranged on both sides of the bottom of the box body, the lead-in wires and the lead-out wires are respectively connected to the terminal body one and the terminal body two, an air sealing component one is arranged between the airbag component one and the junction box body and the terminal body one, an air sealing component two is arranged between the airbag component two and the junction box body and the terminal body two, and the intelligent air pump is connected to the airbag component one and the airbag component two through a one-way air supply pipe.

[0006] Preferably, the airbag assembly 1 and the airbag assembly 2 are both composed of an elastic airbag body, a flexible mounting sleeve and an arc-shaped force-bearing plate. The flexible mounting sleeve is fixedly connected to the side of the support seat, the elastic airbag body is connected to the inside of the flexible mounting sleeve and is connected to the one-way air supply pipe, and the arc-shaped force-bearing plate is fixedly connected to the side of the flexible mounting sleeve.

[0007] Preferably, the air sealing component 1 and the air sealing component 2 are both composed of a connecting air pipe, an air source distributor, a serpentine hard tube, a flexible air pipe 1 and a flexible air pipe 2, the connecting air pipe is respectively connected to the airbag component 1 and the airbag component 2, the air source distributor is fixedly connected to the other end of the connecting air pipe, and the serpentine hard tube, the flexible air pipe 1 and the flexible air pipe 2 are all connected to the side of the air source distributor.

[0008] Preferably, a sealing ring 1 and a sealing ring 2 are provided on the outer side of the box body, and the vertical cross-sections of the sealing ring 1 and the sealing ring 2 are both O-shaped structures.

[0009] Preferably, an annular groove 1 is provided on the outer side edge of the box body, an annular groove 2 matching the annular groove 1 is provided on the inner side edge of the sealing cover body, and an air pipe connector 1 connected to the annular groove 2 is interspersed on both sides of the sealing cover body, and the air pipe connector 1 is connected to a flexible air pipe 1.

[0010] Preferably, both sides of the bottom end of the box body are provided with wire grooves matching the incoming wires and the outgoing wires, the top and bottom ends of the inner side of the wire groove are respectively provided with O-ring 1 and O-ring 2, and a circular groove is provided in the middle position of the inner side of the wire groove, and the serpentine hard tube is inserted and connected to the box body and communicated with the circular groove.

[0011] Preferably, strip-shaped limiting plates matching the lead-in wire and the lead-out wire are fixedly provided on both sides of the bottom end of the box body, and the bottom end of the strip-shaped limiting plates is an arc-shaped structure.

[0012] Preferably, the terminal body one and the terminal body two are both composed of a male terminal, a female terminal, a first terminal protective sleeve and a second terminal protective sleeve, the male terminal is connected to the external cable, the female terminal is respectively connected to the lead-in wire and the lead-out wire, the first terminal protective sleeve is sleeved on the outer surface of the male terminal and the external cable, and the second terminal protective sleeve is sleeved on the outer surface of the female terminal, the lead-in wire and the lead-out wire.

[0013] Preferably, a plurality of limit blocks are fixedly provided at one end of the outer sides of the male terminal and the female terminal, a plurality of limit grooves matching the limit blocks are provided on the inner sides of the first terminal protective sleeve and the second terminal protective sleeve, a long screw connected to the first terminal protective sleeve and the second terminal protective sleeve is inserted inside the limit block, a cylindrical socket is fixedly provided at one end of the first terminal protective sleeve, an annular slot matching the cylindrical socket is provided at one end of the second terminal protective sleeve, a limit buckle is fixedly provided at one end of the outer surface of the first terminal protective sleeve, and a plurality of limit sockets matching the limit buckle are fixedly provided at one end of the outer surface of the second terminal protective sleeve.

[0014] Preferably, the first terminal protective cover and the second terminal protective cover are all sealed with glue connection structures with external cables, lead-in wires and lead-out wires; a sealing gasket is provided at one end of the first terminal protective cover close to the second terminal protective cover; a positive pressure air chamber is formed between the male terminal, the female terminal, the first terminal protective cover and the second terminal protective cover; and an air pipe joint 2 which is connected to the positive pressure air chamber and to the flexible air pipe 2 is inserted at one end of the top of the second terminal protective cover.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) During operation, by providing an intelligent air pump, air can be automatically supplied to the airbag assembly 1 and the airbag assembly 2. By providing the airbag assembly 1 and the airbag assembly 2 composed of an elastic airbag body, a flexible mounting sleeve and an arc-shaped force-bearing plate, a buffer protection effect can be provided to the lead-in wire and the lead-out wire to prevent the lead-in wire and the lead-out wire from being damaged by strong pulling. By providing the air sealing assembly 1 and the air sealing assembly 2 composed of a connecting air pipe, an air source distributor, a serpentine hard pipe, a flexible air pipe 1 and a flexible air pipe 2, gas can be supplied to the junction box body, the terminal body 1 and the terminal body 2, so that the connection between the junction box body, the terminal body 1 and the terminal body 2 is in a positive pressure state, thereby assisting in sealing and improving the overall sealing effect. At the same time, it can also assist in judging whether the air tightness of the junction box body, the terminal body 1 and the terminal body 2 is normal;

[0017] (2) By providing a terminal block body 1 and a terminal block body 2 composed of a male terminal, a female terminal, a first terminal protective cover and a second terminal protective cover, it is possible to achieve external protection, improve sun and rain protection performance, and form a secondary positive pressure seal, effectively improving the overall sealing and stability of the terminal block body 1 and the terminal block body 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] In the attached picture:

[0020] Figure 1 This is a schematic diagram of the structure of a highly stable wiring terminal and a photovoltaic junction box of the present invention;

[0021] Figure 2 This is a cross-sectional view of a highly stable terminal block and a photovoltaic junction box of the present invention;

[0022] Figure 3 For the present invention Figure 2 A partial enlarged view of

[0023] Figure 4 It is a structural schematic diagram of an airbag assembly of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of a gas sealing assembly of the present invention;

[0025] Figure 6 For the present invention Figure 3 A partial enlarged view of

[0026] Figure 7 This is one of the structural schematic diagrams of the terminal block body of the present invention;

[0027] Figure 8 This is the second structural schematic diagram of the terminal block body of the present invention;

[0028] In the figure: 1. Junction box body; 2. Terminal block body 1; 3. Terminal block body 2; 4. Box body; 5. Sealing cover; 6. Equipment room; 7. Support seat; 8. Lead-in wire; 9. Lead-out wire; 10. Intelligent air pump; 11. Air bag component 1; 12. Air bag component 2; 13. Air sealing component 1; 14. Air sealing component 2; 15. One-way air supply pipe; 16. Elastic air bag body; 17. Flexible mounting sleeve; 18. Arc-shaped force plate; 19. Connecting air pipe; 20. Air source distributor; 21. Snake-shaped hard pipe; 22. Flexible air pipe 1; 23. Flexible air pipe 2; 24. Sealed Sealing ring one; 25, sealing ring two; 26, annular groove one; 27, annular groove two; 28, trachea joint one; 29, wire trough; 30, O-ring one; 31, O-ring two; 32, circular groove; 33, strip limit plate; 34, male terminal; 35, female terminal; 36, first terminal protective cover; 37, second terminal protective cover; 38, limit block; 39, limit slide groove; 40, long screw; 41, cylindrical sleeve; 42, annular slot; 43, limit buckle; 44, limit socket; 45, sealing gasket; 46, positive pressure chamber; 47, trachea joint two. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Embodiment 1, by Figures 1 to 3 The present invention provides a highly stable terminal block and a photovoltaic junction box, comprising a junction box body 1, a terminal block body 1 2 and a terminal block body 2 3. The junction box body 1 is composed of a box body 4 and a sealing cover 5. The sealing cover 5 is sleeved on the top of the box body 4. The inside of the box body 4 forms an equipment room 6. Support seats 7 are fixedly arranged on both sides of the bottom of the box body 4. Lead-in wires 8 and lead-out wires 9 are inserted through the bottom of the box body 4. An intelligent air pump 10 is arranged in the middle of the bottom of the box body 4. The two sides of the bottom of the box body 4 are respectively provided with support seats 7. 7 is connected and matched with the airbag component one 11 and the airbag component two 12, the lead-in wire 8 and the lead-out wire 9 are respectively connected with the terminal body one 2 and the terminal body two 3, an air sealing component one 13 is arranged between the airbag component one 11 and the junction box body 1 and the terminal body one 2, an air sealing component two 14 is arranged between the airbag component two 12 and the junction box body 1 and the terminal body two 3, and the intelligent air pump 10 is connected with the airbag component one 11 and the airbag component two 12 through a one-way air supply pipe 15;

[0031] During use, the airbag component 11 and the airbag component 2 12 are inflated by the intelligent air pump 10, and the gas simultaneously enters the interior of the air sealing component 13 and the air sealing component 2 14, and the gas is evenly distributed through the air sealing component 13 and the air sealing component 2 14. The inflated airbag component 11 and the airbag component 2 12 are in contact with the lead-in wire 8 and the lead-out wire 9. When the lead-in wire 8 and the lead-out wire 9 are pulled, the airbag component 11 and the airbag component 2 12 can play a buffering role to improve safety. The air sealing component 13 and the air sealing component 2 14 provide a positive pressure environment for the internal connection of the junction box body 1, the terminal body 1 2 and the terminal body 2 3, and seal them with the assistance of positive pressure. At the same time, according to the gas leakage rate, it can be judged whether the air sealing of the junction box body 1, the terminal body 1 2 and the terminal body 2 3 is normal.

[0032] Embodiment 2, based on embodiment 1, Figure 1 , Figure 4 and Figure 5It is shown that both the airbag assembly 11 and the airbag assembly 2 12 are composed of an elastic airbag body 16, a flexible mounting sleeve 17 and an arc-shaped force-bearing plate 18, the flexible mounting sleeve 17 is fixedly connected to the side of the support seat 7, the elastic airbag body 16 is connected to the inside of the flexible mounting sleeve 17 and connected to the one-way air supply pipe 15, and the arc-shaped force-bearing plate 18 is fixedly connected to the side of the flexible mounting sleeve 17;

[0033] The flexible mounting sleeve 17 can support and limit the elastic airbag body 16 to improve stability, and the arc-shaped force-bearing plate 18 can increase the squeezing area of ​​the elastic airbag body 16, thereby increasing the buffering effect;

[0034] The air sealing component 13 and the air sealing component 2 14 are both composed of a connecting air pipe 19, an air source distributor 20, a serpentine hard pipe 21, a flexible air pipe 1 22 and a flexible air pipe 2 23. The connecting air pipe 19 is connected to the air bag component 1 11 and the air bag component 2 12 respectively, the air source distributor 20 is fixedly connected to the other end of the connecting air pipe 19, and the serpentine hard pipe 21, the flexible air pipe 1 22 and the flexible air pipe 2 23 are all connected to the side of the air source distributor 20;

[0035] The gas enters the interior of the gas source distributor 20 through the connecting gas pipe 19, and the gas is diverted by the gas source distributor 20 so that the gas enters the interiors of the serpentine hard pipe 21, the flexible gas pipe 1 22 and the flexible gas pipe 2 23 respectively.

[0036] Embodiment 3, based on embodiment 1, Figure 2 , Figure 3 and Figure 6 The outer side of the box body 4 is provided with a sealing ring 24 and a sealing ring 25, and the vertical cross-sections of the sealing ring 24 and the sealing ring 25 are both O-shaped structures. The outer side of the box body 4 is provided with an annular groove 26, and the inner side of the sealing cover 5 is provided with an annular groove 27 matching the annular groove 26. Both sides of the sealing cover 5 are interspersed with an air pipe joint 28 connected to the annular groove 27, and the air pipe joint 28 is connected to the flexible air pipe 22. The two sides of the bottom of the box body 4 are A wire groove 29 matching with the lead-in wire 8 and the lead-out wire 9 is provided, and an O-ring 1 30 and an O-ring 2 31 are provided at the top and bottom of the inner side of the wire groove 29, respectively. A circular ring groove 32 is provided in the middle of the inner side of the wire groove 29, and the serpentine hard tube 21 is inserted and connected to the box body 4 and communicated with the circular ring groove 32. Both sides of the bottom end of the box body 4 are fixedly provided with a strip-shaped limit plate 33 matching with the lead-in wire 8 and the lead-out wire 9, and the bottom end of the strip-shaped limit plate 33 is an arc-shaped structure;

[0037] The sealing ring 1 24 and the sealing ring 25 can improve the sealing performance of the connection between the sealing cover body 5 and the box body 4. The air pipe joint 28 is connected to the flexible air pipe 22. The flexible air pipe 22 supplies air to the inside of the annular groove 26 and the annular groove 27 to form a positive pressure environment inside, thereby achieving a sealing effect. The O-ring 1 30 and the O-ring 2 31 can improve the installation sealing performance of the lead-in wire 8 and the lead-out wire 9. The serpentine hard tube 21 supplies air to the inside of the circular groove 32 to form a positive pressure environment inside the circular groove 32, thereby further improving the sealing performance.

[0038] Embodiment 4, based on embodiment 1, Figure 1 , Figure 5 , Figure 7 and Figure 8 It is given that the terminal body 1 2 and the terminal body 2 3 are both composed of a male terminal 34, a female terminal 35, a first terminal protective sleeve 36 and a second terminal protective sleeve 37. The male terminal 34 is connected to an external cable, and the female terminal 35 is respectively connected to the lead-in wire 8 and the lead-out wire 9. The first terminal protective sleeve 36 is sleeved on the outer surface of the male terminal 34 and the external cable, and the second terminal protective sleeve 37 is sleeved on the outer surface of the female terminal 35, the lead-in wire 8 and the lead-out wire 9. One end of the outer side of the male terminal 34 and the female terminal 35 is fixedly provided with a plurality of limit blocks 38, and the inner side edges of the first terminal protective sleeve 36 and the second terminal protective sleeve 37 are provided with a plurality of limit sliding grooves 39 matching the limit blocks 38. The interior of the limit block 38 is interspersed with a long screw 40 connected to the first terminal protective sleeve 36 and the second terminal protective sleeve 37. One end of the first terminal protective sleeve 36 is fixedly provided with a plurality of limit sliding grooves 39 matching the limit blocks 38. A cylindrical socket 41 is fixedly provided, and an annular slot 42 matching the cylindrical socket 41 is opened at one end of the second terminal protection sleeve 37. A limit buckle 43 is fixedly provided at one end of the outer surface of the first terminal protection sleeve 36, and a plurality of limit sockets 44 matching the limit buckle 43 are fixedly provided at one end of the outer surface of the second terminal protection sleeve 37. The first terminal protection sleeve 36 and the second terminal protection sleeve 37 are all sealed with a sealant connection structure with the external cable, the lead-in wire 8 and the lead-out wire 9. A sealing gasket 45 is provided at one end of the first terminal protection sleeve 36 close to the second terminal protection sleeve 37. A positive pressure air chamber 46 is formed between the male terminal 34, the female terminal 35, the first terminal protection sleeve 36 and the second terminal protection sleeve 37. A pipe joint 2 47 connected to the positive pressure air chamber 46 and connected to the flexible air pipe 23 is interspersed at one end of the top of the second terminal protection sleeve 37;

[0039] The first terminal protection sleeve 36 and the second terminal protection sleeve 37 are used to provide secondary protection for the male terminal 34 and the female terminal 35 to improve the sun and rain protection performance. The first terminal protection sleeve 36 and the second terminal protection sleeve 37 can be firmly installed through the limit block 38, the limit slide groove 39 and the long screw 40. The sealing and stability of the connection between the first terminal protection sleeve 36 and the second terminal protection sleeve 37 can be improved through the cylindrical sleeve 41, the annular slot 42, the limit buckle 43, the limit socket 44 and the sealing gasket 45. The flexible air pipe 23 is connected to the air pipe joint 47, and the flexible air pipe 23 introduces gas into the positive pressure air chamber 46, so that a positive pressure environment is formed inside the positive pressure air chamber 46, further improving the sealing.

[0040] During operation, the intelligent air pump can automatically supply air to the airbag assembly 1 and the airbag assembly 2. The airbag assembly 1 and the airbag assembly 2 composed of an elastic airbag body, a flexible mounting sleeve and an arc-shaped force-bearing plate can provide a buffering protection for the lead-in wire and the lead-out wire to prevent the lead-in wire and the lead-out wire from being damaged by strong pulling. The air sealing assembly 1 and the air sealing assembly 2 composed of a connecting air pipe, an air source distributor, a serpentine hard pipe, a flexible air pipe 1 and a flexible air pipe 2 can supply gas to the junction box body, the terminal body 1 and the terminal body 2, so that the junction box body can be The connection between the body, the terminal body one and the terminal body two is in a positive pressure state, which can assist in sealing and improve the overall sealing effect. It can also assist in judging whether the air tightness of the junction box body, the terminal body one and the terminal body two is normal; by providing the terminal body one and the terminal body two composed of the male terminal, the female terminal, the first terminal protective cover and the second terminal protective cover, the external protection function can be achieved, the sun and rain protection performance can be improved, and a secondary positive pressure seal can be formed at the same time, which effectively improves the overall sealing and stability of use of the terminal body one and the terminal body two.

Claims

1. A highly stable terminal block and a photovoltaic junction box, comprising a junction box body (1), a first terminal block body (2) and a second terminal block body (3), characterized in that: The junction box body (1) is composed of a box body (4) and a sealing cover body (5), the sealing cover body (5) is sleeved on the top of the box body (4), the interior of the box body (4) forms an equipment room (6), support seats (7) are fixedly arranged on both sides of the bottom of the box body (4), an introduction line (8) and an outlet line (9) are inserted through the bottom of the box body (4), an intelligent air pump (10) is arranged in the middle of the bottom of the box body (4), and air bag components (10) connected to the support seat (7) and matching with the introduction line (8) and the outlet line (9) are respectively arranged on both sides of the bottom of the box body (4). The invention relates to a first airbag assembly (11) and a second airbag assembly (12), wherein the lead-in wire (8) and the lead-out wire (9) are respectively connected to the first terminal body (2) and the second terminal body (3), an air sealing component (13) is arranged between the first airbag assembly (11) and the junction box body (1) and the first terminal body (2), an air sealing component (14) is arranged between the second airbag assembly (12) and the junction box body (1) and the second terminal body (3), and the intelligent air pump (10) is connected to the first airbag assembly (11) and the second airbag assembly (12) through a one-way air supply pipe (15).

2. The highly stable terminal block and photovoltaic junction box according to claim 1, characterized in that: The airbag assembly 1 (11) and the airbag assembly 2 (12) are both composed of an elastic airbag body (16), a flexible mounting sleeve (17) and an arc-shaped force-bearing plate (18); the flexible mounting sleeve (17) is fixedly connected to the side of the support seat (7); the elastic airbag body (16) is connected to the inside of the flexible mounting sleeve (17) and is connected to the one-way air supply pipe (15); and the arc-shaped force-bearing plate (18) is fixedly connected to the side of the flexible mounting sleeve (17).

3. The highly stable terminal block and photovoltaic junction box according to claim 1, characterized in that: The air sealing component 1 (13) and the air sealing component 2 (14) are both composed of a connecting air pipe (19), an air source distributor (20), a serpentine hard pipe (21), a flexible air pipe 1 (22) and a flexible air pipe 2 (23); the connecting air pipe (19) is connected to the air bag component 1 (11) and the air bag component 2 (12) respectively; the air source distributor (20) is fixedly connected to the other end of the connecting air pipe (19); the serpentine hard pipe (21), the flexible air pipe 1 (22) and the flexible air pipe 2 (23) are all connected to the side of the air source distributor (20).

4. The highly stable terminal block and photovoltaic junction box according to claim 1, characterized in that: The outer side of the box body (4) is provided with a sealing ring 1 (24) and a sealing ring 2 (25), and the vertical cross-sections of the sealing ring 1 (24) and the sealing ring 2 (25) are both O-shaped structures.

5. The highly stable terminal block and photovoltaic junction box according to claim 3, characterized in that: The outer side edge of the box body (4) is provided with an annular groove (26), the inner side edge of the sealing cover body (5) is provided with an annular groove (27) matching the annular groove (26), and both sides of the sealing cover body (5) are interspersed with an air pipe joint (28) connected to the annular groove (27), and the air pipe joint (28) is connected to the flexible air pipe (22).

6. The highly stable terminal block and photovoltaic junction box according to claim 3, characterized in that: Both sides of the bottom end of the box body (4) are provided with wire grooves (29) matching the lead-in wire (8) and the lead-out wire (9), the top and bottom ends of the inner side of the wire groove (29) are respectively provided with an O-type sealing ring 1 (30) and an O-type sealing ring 2 (31), a circular groove (32) is provided in the middle of the inner side of the wire groove (29), and the serpentine hard tube (21) is inserted and connected to the box body (4) and communicates with the circular groove (32).

7. The highly stable terminal block and photovoltaic junction box according to claim 1, characterized in that: Strip-shaped limiting plates (33) matching the lead-in wire (8) and the lead-out wire (9) are fixedly arranged on both sides of the bottom end of the box body (4), and the bottom end of the strip-shaped limiting plate (33) is an arc-shaped structure.

8. The highly stable terminal block and photovoltaic junction box according to claim 3, characterized in that: The first terminal body (2) and the second terminal body (3) are both composed of a male terminal (34), a female terminal (35), a first terminal protective sleeve (36) and a second terminal protective sleeve (37); the male terminal (34) is connected to an external cable, the female terminal (35) is respectively connected to an incoming wire (8) and an outgoing wire (9); the first terminal protective sleeve (36) is sleeved on the outer surface of the male terminal (34) and the external cable, and the second terminal protective sleeve (37) is sleeved on the outer surface of the female terminal (35), the incoming wire (8) and the outgoing wire (9).

9. The highly stable terminal block and photovoltaic junction box according to claim 8, characterized in that: A plurality of limit blocks (38) are fixedly arranged at one end of the outer side of the male terminal (34) and the female terminal (35); a plurality of limit sliding grooves (39) matching the limit blocks (38) are provided at the inner sides of the first terminal protection sleeve (36) and the second terminal protection sleeve (37); a long screw (40) connected to the first terminal protection sleeve (36) and the second terminal protection sleeve (37) is inserted into the interior of the limit block (38); a columnar plug sleeve (41) is fixedly arranged at one end of the first terminal protection sleeve (36); an annular slot (42) matching the columnar plug sleeve (41) is provided at one end of the second terminal protection sleeve (37); a limit buckle (43) is fixedly arranged at one end of the outer surface of the first terminal protection sleeve (36); and a plurality of limit sockets (44) matching the limit buckle (43) are fixedly arranged at one end of the outer surface of the second terminal protection sleeve (37).

10. The highly stable terminal block and photovoltaic junction box according to claim 8, characterized in that: The first terminal protective sleeve (36) and the second terminal protective sleeve (37) are all connected to the external cables, the lead-in wire (8) and the lead-out wire (9) by a sealing adhesive. A sealing gasket (45) is provided at one end of the first terminal protective sleeve (36) close to the second terminal protective sleeve (37). A positive pressure air chamber (46) is formed between the male terminal (34), the female terminal (35), the first terminal protective sleeve (36) and the second terminal protective sleeve (37). An air pipe joint 2 (47) which is in communication with the positive pressure air chamber (46) and connected to the flexible air pipe 2 (23) is inserted at one end of the top of the second terminal protective sleeve (37).

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