Manufacturing method of photovoltaic junction box convenient for assembly

1. The utility model relates to the technical field of power equipment, in particular to a photovoltaic junction box that is easy to assemble.

   
   

Background technique:

2. In the photovoltaic industry, a photovoltaic junction box is needed. This junction box is used to transfer the electrical energy converted from light energy to the electrical circuit.

3. In the prior art, most of the box body of the junction box is integrally injection molded, and then the conductor is fixed in the box by screws. The assembly method is complicated. The conductors are electrically connected through diodes. During use, When the diode is applied with a reverse voltage, it will generate a lot of heat. At this time, it is easy to cause thermal damage to the box body next to the diode. After damage, the internal insulation will be reduced and the service life of the junction box will be reduced.

4. In view of the existence of the above-mentioned problems, the designer based on years of rich practical experience and professional knowledge engaged in the engineering application of this type of product, combined with the application of academic theory, actively researches and innovates, in order to create a photovoltaic junction box that is easy to assemble, so that It is more practical.

2. Technical realization elements:

5. The technical problem to be solved by the utility model is to provide a photovoltaic junction box that is easy to assemble, so as to solve the problems in the background art.

6. In order to achieve the above purpose, the technical solution adopted by the present utility model is: a photovoltaic junction box that is easy to assemble, including:

7. The box body has a containing cavity and two threading holes on one side;

8. The cover is set on the box and used to open or close the opening of the accommodating cavity;

9. A plurality of terminal assemblies, which are arranged in the accommodating cavity and include an insulating housing and a conductor arranged on the insulating housing,

10. A plurality of diodes, which are arranged between the terminal assemblies and electrically connect the conductors on two adjacent sides;

11. Two external wires respectively pass through the two threading holes to enter the containing cavity, and the ends are electrically connected with the conductor; wherein,

12. The box body is provided with a plurality of pairs of slide rails perpendicular to the side surface with threading holes, the number of the slide rails corresponds to the number of the terminal assemblies, and the terminal assembly is provided with the slide rails The sliding block of the box body is provided with an open opening on the side opposite to the side with the threading hole, and the terminal assembly slides into the box body through the open opening.

13. Further, a card board is further provided above the terminal assembly, a first slot is provided on the side wall of the box body, and the end of the card board is inserted into the first slot.

14. Further, the card board is provided with a downward limiting slot corresponding to the terminal assembly, and the terminal assembly partially enters the limiting slot.

15. Further, there is more than one card board.

16. Further, when the cover body is in the closed state, the upper surface of the card board is attached to the cover body.

17. Further, the terminal assembly is provided with baffles on both sides close to and far from the open opening, a second slot is provided on the side wall of the box body corresponding to the baffle, and the baffle Inserted into the second slot.

18. Further, the insulating housing has a split structure, including a left housing and a right housing, and the left housing and the right housing are snap-connected.

19. Further, the side of the left housing facing the right housing is provided with a first hollow cylinder, and the side of the right housing is provided with a second cylinder in cooperation with the first cylinder. When installed, the The second cylinder is inserted into the first cylinder.

20. Further, the box body and the cover body are connected by a snap connection.

21. The beneficial effects of the present utility model are: each terminal assembly of the present utility model is separately processed and formed, the terminal assembly is provided with a slider, and the box body is correspondingly provided with a sliding rail, and the terminal assembly is combined with the sliding rail. Assembled into the box body, the assembly method is simple and easy to operate. In this technology, the terminal assembly and assembly connection are used. If the terminal assembly is damaged in the later use process, the corresponding broken terminal assembly can also be replaced, which reduces the maintenance cost and is practical. sex.

Description of the drawings

22. In order to more clearly explain the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, in the following description The drawings are only some of the embodiments described in the present utility model. For those of ordinary skill in the art, without creative work, other drawings can be obtained from these drawings.

23. Figure 1 is a schematic structural diagram of a photovoltaic junction box that is easy to assemble in an embodiment of the utility model;

24. Figure 2 is a rear view of the photovoltaic junction box that is easy to assemble in the embodiment of the utility model;

25. Figure 3 is an enlarged view of the position a in the embodiment of the utility model;

26. Figure 4 is a top view of a photovoltaic junction box that is easy to assemble in an embodiment of the utility model;

27. Figure 5 is a schematic diagram of the structure of the terminal assembly in the embodiment of the utility model.

28. Reference signs: 1. Box body; 2. Cover body; 3. Insulating shell; 4. Conductor; 5. Diode; 6. External wiring; 7. Slide rail; 8. Slider; 9. Open opening; 10. Card board; 11. The first slot; 12. The limit slot; 13, the baffle; 14, the second slot; 15, the left housing; 16, the right housing; 17, the first cylinder; 18. The second cylinder.

detailed description

29. The technical solutions in the embodiments of the present utility model will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Example.

30. As shown in Figure 1

The photovoltaic junction box shown in 5 is easy to assemble, including:

31. The box body 1, with a containing cavity, and two threading holes on one side;

32. The cover 2, which is set on the box 1, is used to open or close the opening of the accommodating

cavity;

33. Multiple terminal assemblies, which are arranged in the accommodating cavity and include an insulating housing 3 and a conductor 4 arranged in the insulating housing 3,

34. A plurality of diodes 5, which are arranged between the terminal assemblies and electrically connect the conductors 4 on two adjacent sides;

35. Two external wires 6 respectively pass through the two threading holes into the containing cavity, and the ends are electrically connected to the conductor 4; among them,

36. The box body 1 is provided with multiple pairs of slide rails 7 perpendicular to the side surface with threading holes. The number of slide rails 7 corresponds to the number of terminal components. The terminal components are provided with sliders 8 matching the slide rails 7, and the box An open opening 9 is provided on the side of the body 1 opposite to the side with the threading hole, and the terminal assembly is slid into the box body 1 through the open opening 9.

37. The terminal assembly of the present invention and the box body 1 are assembled in connection. The box body 1 has less internal structure and is easier to process and shape. The terminal assembly includes an insulating housing 3 and a conductor arranged in the insulating housing 3 4. This utility model adopts a box body 1 which is equipped with 4 terminal assemblies. The 4 terminal assemblies include 4 conductors 4 in total. The 4 conductors 4 are connected in series through 3 diodes 5. When installing, first Assemble the insulating shell 3 and the conductor 4, and then the terminal assembly enters from the open opening 9, the slider 8 set on the terminal assembly enters the slide rail 7, and slides to the designated position, and then the diode 5 and the conductor 4 Welding and fixing, the two external wires 6 are connected with the conductors 4 on both sides, the assembly is completed, and it is ready for use.

38. Because the photovoltaic junction box generates a lot of heat during operation, the diode 5 will rapidly heat up in the reverse current state, and it is easy to burn the adjacent housing part. Therefore, in this technology, the terminal assembly is separately formed and then assembled into In the box 1, when the insulating shell 3 close to the diode 5 is thermally damaged, the repair can be completed by replacing the damaged terminal assembly, which reduces the maintenance cost, and this assembly method is also easy to replace different terminal assemblies and diodes 5. Wider adaptation, easier processing and more practicality.

39. Wherein, a card board 10 is further provided above the terminal assembly, a first slot 11 is provided on the side wall of the box body 1, and the end of the card board 10 is inserted into the first slot 11.

40. The terminal assembly is further restricted by setting the card board 10 to prevent the terminal assembly from shifting relative to the box body 1.

41. As shown in FIG. 1, the card board 10 is provided with a downward limiting slot 12 corresponding to the terminal assembly, and the terminal assembly partially enters the limiting slot 12.

42. By setting the limit slot 12 to clamp the terminal assembly, the stability of the connection of the terminal assembly is further enhanced, and dislocation movement is prevented.

43. More specifically, there is more than one card board 10, which can be respectively clipped on different positions of the terminal assembly.

44. In order to further enhance the limiting ability of the card board 10, when the cover body 2 is in the closed state, the upper surface of the card board 10 is attached to the cover body 2 to prevent the card board 10 from being opposed to the box body 1 during the movement of the junction box. Misalignment occurred. The card board 10 is further restricted by the cover 2.

45. In order to prevent the terminal assembly from moving relative to the open opening 9, the terminal assembly is provided with baffles 13 on both sides close to and far from the open opening 9, and the side wall of the box body 1 is provided with a second slot 14 at the position corresponding to the baffle 13 , The baffle 13 is inserted into the second slot 14.

46. By setting the baffle 13 to limit the terminal assembly front and rear, the positioning effect after installation is achieved, and the terminal assembly is prevented from dislocation and movement during the use of the junction box, thereby separating the connection with the diode 5.

47. In order to facilitate processing, the insulating housing 3 has a split structure, including a left housing 15 and a right housing 16, and the left housing 15 and the right housing 16 are snap-connected.

48. In order to increase the stability of the connection between the left housing 15 and the right housing 16, the side of the left housing 15 facing the right housing 16 is provided with a first hollow cylinder 17, and the side of the right housing 16 is provided with the first cylinder 17 There is a second cylinder 18, and the second cylinder 18 is inserted into the first cylinder 17 during installation.

49. In order to facilitate the use, the box body 1 and the cover body 2 are connected by a snap connection.

50. Those skilled in the industry should understand that the present utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the description only illustrate the principles of the present utility model, without departing from the spirit and scope of the present utility model.

The utility model will have various changes and improvements, and these changes and improvements fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Technical characteristics:

1. A photovoltaic junction box that is easy to assemble, characterized by comprising: a box body 

(1) with a containing cavity and two threading holes on one side; a cover body 

(2) arranged on the box body (1) ), used to open or close the opening of the accommodating cavity; a plurality of terminal assemblies are arranged in the accommodating cavity and include an insulating housing (3) and a conductor (4) arranged on the insulating housing (3) ), a plurality of diodes (5), which are arranged between the terminal assemblies and electrically connect the conductors (4) on two adjacent sides; two external wires (6) respectively pass through the two threading holes and enter In the accommodating cavity, and the end is electrically connected to the conductor (4); wherein, the box body (1) is provided with a plurality of pairs of sliding rails (7) perpendicular to the side surface with threading holes, the The number of sliding rails (7) corresponds to the number of the terminal assembly, the terminal assembly is provided with a sliding block (8) matching the sliding rail (7), and the box body (1) has a threading An open opening (9) is provided on the opposite side of the side of the hole, and the terminal assembly is slid into the box body (1) through the open opening (9). 2. The photovoltaic junction box that is easy to assemble according to claim 1, wherein a clamping board (10) is further provided above the terminal assembly, and a first plug is provided on the side wall of the box body (1). Slot (11), the end of the card board (10) is inserted into the first slot (11). 3. The photovoltaic junction box easy to assemble according to claim 2, characterized in that the card board (10) is provided with a downward limiting slot (12) corresponding to the terminal assembly, and the terminal assembly is partially Enter into the limit slot (12). The photovoltaic junction box easy to assemble according to claim 2, characterized in that there is more than one card board (10). The photovoltaic junction box easy to assemble according to claim 2, characterized in that, when the cover (2) is in the closed state, the upper surface of the card board (10) is attached to the cover (2) combine. The photovoltaic junction box easy to assemble according to claim 1, wherein the terminal assembly is provided with baffles (13) on both sides close to and far from the open opening (9), and the box body The side wall of (1) is provided with a second slot (14) at a position corresponding to the baffle (13), and the baffle (13) is inserted into the second slot (14). The photovoltaic junction box easy to assemble according to claim 1, characterized in that the insulating housing (3) is a split structure, comprising a left housing (15) and a right housing (16), the left The housing (15) and the right housing (16) are snap-connected. The photovoltaic junction box easy to assemble according to claim 7, characterized in that the side of the left housing (15) facing the right housing (16) is provided with a hollow first cylinder (17), The side surface of the right casing (16) is matched with the first cylinder (17) to be provided with a second cylinder (18), and when installed, the second cylinder (18) is inserted into the first cylinder (17) . 9. The photovoltaic junction box easy to assemble according to claim 1, wherein the box body (1) and the cover body (2) are connected by a snap connection. 10.

Technical summary

The utility model relates to the technical field of power equipment, in particular to a photovoltaic junction box that is easy to assemble. There are a number of threading holes. The box body is provided with multiple pairs of slide rails perpendicular to the side with the threading holes. The number of slide rails corresponds to the number of terminal components. The terminal components are provided with sliders that cooperate with the slide rails. The opposite side of the side with the threading hole is provided with an open opening, and the terminal assembly slides into the box body through the open opening. The terminal assembly of the present invention is connected with the box body in a plug-in type, which is convenient for installation and can be replaced separately after damage. Practicality. Practical. Practical.