CN214543130U

CN214543130U - Photovoltaic lightning protection combiner box

Info

Publication number: CN214543130U
Application number: CN202120836436.XU
Authority: CN
Inventors: 王盼盼; 朱江南; 王东倪; 张建勋
Original assignee: Ningbo Yongneng New Energy Technology Co ltd
Current assignee: Ningbo Yongneng New Energy Technology Co ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-10-29
Anticipated expiration: 2031-04-22

Abstract

The utility model relates to a photovoltaic conflux technical field specifically is a photovoltaic lightning protection conflux case, including box, photovoltaic conflux subassembly and lightning protection subassembly, the rear end of box is connected with the case lid through the hinge, the inside of box is provided with the installation component, install photovoltaic conflux subassembly and lightning protection subassembly on the installation component, one side of box is provided with the supporting mechanism; the supporting mechanism is used for supporting and fixing the opened box cover. The utility model discloses an improve the inside wiring, the device of current photovoltaic conflux case and arrange and mounting structure, simplify production technology, reduction in production cost is convenient for overhaul the conflux case and the accessory is changed, improves the reliability of photovoltaic conflux case operation.

Description

Photovoltaic lightning protection combiner box

Technical Field

The utility model relates to a photovoltaic technical field that converges specifically is a photovoltaic lightning combiner box.

Background

The photovoltaic combiner box is characterized in that a certain number of photovoltaic cells with the same specification are connected in series to form a photovoltaic array, then the photovoltaic arrays are connected in parallel to the photovoltaic combiner box, and after the photovoltaic arrays are combined in the photovoltaic combiner box, a complete photovoltaic power generation system is formed by matching and using the controller, the direct-current power distribution cabinet, the photovoltaic inverter and the alternating-current power distribution cabinet, so that grid connection with a mains supply is realized.

There is a large amount of different collection flow box in the present field in market, and the partial part of making of collection flow box is mostly the same, because the inside electronic components who is provided with multiple difference of box to make inside electronic components arrange and walk the line in a jumble, the daily maintenance of being not convenient for and the accessory in later stage are changed, and the market has the collection flow box of some integrated forms, though inside is arranged neatly, but manufacturing cost is higher, consequently need for a photovoltaic lightning protection collection flow box to solve above-mentioned problem urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a photovoltaic lightning protection collection flow box to current collection flow box that proposes in solving above-mentioned background art has the mixed and disorderly and higher problem of manufacturing cost of internal component and circuit.

In order to achieve the above object, the utility model provides a following technical scheme: a photovoltaic lightning protection combiner box comprises a box body, a photovoltaic combiner component and a lightning protection component, wherein the rear end of the box body is connected with a box cover through a hinge; the supporting mechanism is used for supporting and fixing the opened box cover.

Preferably, the mounting assembly comprises a first mounting plate, a first fixing plate, a second mounting plate, a second fixing plate, a third mounting plate, a fourth fixing plate and a heat sink, the rear end of the interior of the box body is connected with a first mounting plate through a bolt, one side of the upper surface of the first mounting plate is fixedly provided with a first fixing plate, one side of the inner part of the front end of the box body is connected with a second mounting plate through a bolt, one side of the upper surface of the second mounting plate, which is close to the inner wall of the box body, is fixedly provided with a second fixing plate, a third fixing plate is fixedly arranged on the other side of the upper surface of the second mounting plate, the middle part inside the front end of the box body is connected with the third mounting plate through a bolt, the middle part fixed mounting of third mounting panel upper surface has the fourth fixed plate, there is the radiator box downside surface one end of keeping away from the second mounting panel through bolted connection.

Preferably, the photovoltaic confluence assembly comprises a waterproof joint, a photovoltaic connector, a circuit breaker, a host module, a current collection module, a negative fuse, a positive fuse, an anti-reverse diode and a copper bar, the front end and the rear end of the box body, which are close to one side of the second mounting plate, are respectively and fixedly provided with the waterproof joint and the photovoltaic connector, the middle part of the upper surface of the first mounting plate is connected with the circuit breaker through bolts, the rear end of the first fixing plate is fixedly provided with the host module, the second fixing plate, the third fixing plate and the fourth fixing plate are respectively and fixedly provided with the current collection module, the negative fuse and the positive fuse, the upper surface of the radiator is connected with the anti-reverse diode through bolts, and the circuit breaker is connected with the negative fuse and the wiring end of the anti-reverse diode through the copper bar.

Preferably, the lightning protection assembly comprises a surge protector and a signal lightning protector, the surge protector is fixedly mounted in the middle of the first fixing plate, and the signal lightning protector is fixedly mounted at the front end of the first fixing plate.

Preferably, the outside fixed surface of box is connected with L type slide rail, the rear end block of L type slide rail has the slider, the pot head of slider is equipped with the cutting ferrule, the vertical inslot of cutting ferrule block at L type slide rail rear end, the last fixed surface of slider is connected with the spring, the upper end of spring and the upper end inner wall fixed connection of cutting ferrule, the middle part fixedly connected with dead lever of cutting ferrule outside surface, the middle part of dead lever is rotated and is connected with the connecting rod, the other end of connecting rod is connected through the pivot with the outer wall of case lid that is located L type slide rail one side.

Preferably, bolted connection is passed through to the both sides switch-on of first mounting panel upper end has first insulating transparent plate, and is two sets of the downside surface that first insulating transparent plate is close to one end each other is laminated with the both sides of circuit breaker upper surface respectively, is located it has the second insulating transparent plate to prevent to have through bolted connection on the copper bar of anti-diode top.

Preferably, the inner wall of the outer side of the box body is fixedly connected with a wiring bridge, and the wiring bridge is made of rubber.

Preferably, the corners of the front side and the rear side of the box body are fixedly connected with support legs, and the middle parts of the lower ends of the support legs are provided with mounting holes.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the photovoltaic lightning protection combiner box is provided with the mounting assembly, the photovoltaic combiner box and the lightning protection assembly, the production process is simplified, the production cost is reduced, the combiner box is convenient to overhaul and replace accessories by improving the internal wiring, the device arrangement and the mounting structure of the existing photovoltaic combiner box, and the operation reliability of the photovoltaic combiner box is improved;

2. this photovoltaic lightning combiner box is provided with supporting mechanism, opens the back when the case lid, and spring promotion cutting ferrule card is gone into to the vertical inslot of L type slide rail to make the connecting rod support the case lid, fix the case lid, thereby can avoid when using closing the case lid when overhauing the combiner box under the effect of external force, influence then and overhaul.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic three-dimensional structure diagram of the box body, the box cover, the mounting assembly, the photovoltaic junction assembly, the lightning protection assembly, the support mechanism, the wiring bridge and the support legs of the utility model;

FIG. 3 is a schematic perspective view of the case, the mounting assembly, the first transparent insulating plate, the second transparent insulating plate, the routing bridge and the support legs of the present invention;

fig. 4 is a schematic perspective view of the installation assembly, the photovoltaic junction assembly, the lightning protection assembly, the first transparent insulating plate and the second transparent insulating plate according to the present invention;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 6 is a schematic right side view cross-section of the structure of FIG. 1 in accordance with the present invention;

fig. 7 is a schematic perspective view of the supporting mechanism of the present invention.

In the figure: 1. a box body; 2. a box cover; 311. a first mounting plate; 312. a first fixing plate; 313. a second mounting plate; 314. a second fixing plate; 315. a third fixing plate; 316. a third mounting plate; 317. a fourth fixing plate; 318. a heat sink; 411. a waterproof joint; 412. a photovoltaic connector; 413. a circuit breaker; 414. a host module; 415. a current collection module; 416. a negative fuse; 417. a positive electrode fuse; 418. an anti-reverse diode; 419. copper bars; 511. a surge protector; 512. a signal lightning protector; 611. an L-shaped slide rail; 612. a slider; 613. a card sleeve; 614. a spring; 615. fixing the rod; 616. a connecting rod; 7. a first insulating transparent plate; 8. a second insulating transparent plate; 9. a routing bridge; 10. and (3) a support leg.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a photovoltaic lightning protection combiner box comprises a box body 1, a photovoltaic combiner component and a lightning protection component, wherein the rear end of the box body 1 is connected with a box cover 2 through a hinge, an installation component is arranged inside the box body 1, the photovoltaic combiner component and the lightning protection component are installed on the installation component, and a supporting mechanism is arranged on one side of the box body 1; the supporting mechanism is used for supporting and fixing the opened box cover 2.

The mounting assembly includes a first mounting plate 311, a first fixing plate 312, a second mounting plate 313, a second fixing plate 314, a third fixing plate 315, a third mounting plate 316, a fourth fixing plate 317, and a heat sink 318, there is first mounting panel 311 at the inside rear end of box 1 through bolted connection, one side fixed mounting of first mounting panel 311 upper surface has first fixed plate 312, bolted connection second mounting panel 313 is passed through to the inside one side of box 1 front end, one side fixed mounting that second mounting panel 313 upper surface is close to box 1 inner wall has second fixed plate 314, the opposite side fixed mounting of second mounting panel 313 upper surface has third fixed plate 315, there is third mounting panel 316 at the inside middle part of box 1 front end through bolted connection, the middle part fixed mounting of third mounting panel 316 upper surface has fourth fixed plate 317, there is radiator 318 through bolted connection at the one end that second mounting panel 313 was kept away from to box 1 downside surface. The first mounting plate 311, the second mounting plate 313, the third mounting plate 316 and the heat sink 318 are all fixedly connected to the case 1 by bolts, the first mounting plate 311, the second mounting plate 313, the third mounting plate 316 and the heat sink 318 are removed by removing the bolts, thereby facilitating the repair and replacement of the components, the first fixing plate 312 is welded to the surface of the first mounting plate 311, the second fixing plate 314 and the third fixing plate 315 are both welded to the surface of the second mounting plate 313, the fourth fixing plate 317 is welded to the surface of the third mounting plate 316, the photovoltaic junction assembly and the lightning protection assembly which are installed on the first fixing plate 312, the second fixing plate 314, the third fixing plate 315 and the fourth fixing plate 317 can be firmly fixed by firmly connecting the photovoltaic junction assembly and the lightning protection assembly in a welding mode, and sealant is filled between the anti-reflection diode 418 and the box body 1, so that the sealing performance of the anti-reflection diode can be improved, and the safety level is improved.

The photovoltaic confluence assembly comprises a waterproof connector 411, a photovoltaic connector 412, a circuit breaker 413, a host module 414, a current collection module 415, a negative fuse 416, a positive fuse 417, an anti-reverse diode 418 and a copper bar 419, the waterproof connector 411 and the photovoltaic connector 412 are respectively and fixedly installed at the front end and the rear end of one side of the box body 1 close to the second installation plate 313, the circuit breaker 413 is connected to the middle of the upper surface of the first installation plate 311 through bolts, the host module 414 is fixedly installed at the rear end of the first fixing plate 312, the current collection module 415, the negative fuse 416 and the positive fuse 417 are respectively and fixedly installed on the second fixing plate 314, the third fixing plate 315 and the fourth fixing plate 317, the anti-reverse diode 418 is connected to the upper surface of the radiator 318 through bolts, and the terminals of the circuit breaker 413, the negative fuse 416 and the anti-reverse diode 418 are connected through the copper bar 419. The radiator 318 is connected with the anti-reverse diode 418 through a bolt, so that the lower surface of the anti-reverse diode 418 can be completely attached to the upper surface of the radiator 318, the radiator 318 can effectively guide heat generated by the work of the anti-reverse diode 418 out, the anti-reverse diode 418 is prevented from being damaged due to overheating, the copper bars 419 are connected through the outer hexagonal screws, the mounting is convenient in a compact space, the first fixing plate 312, the second fixing plate 314, the third fixing plate 315 and the fourth fixing plate 317 are U-shaped, two sides of the upper end of the first fixing plate are bent, the element can be fixed and can be removed from one end of the first fixing plate, the element and the mounting assembly are conveniently separated, compared with an integrated bus box, the production cost is low, damaged parts can be conveniently replaced if the parts are damaged, and the maintenance cost is reduced.

The lightning protection subassembly includes surge protector 511 and signal lightning protection device 512, the middle part fixed mounting of first fixed plate 312 has surge protector 511, the front end fixed mounting of first fixed plate 312 has signal lightning protection device 512, the lower extreme joint block of surge protector 511 and signal lightning protection device 512 is on first fixed plate 312, can follow the one end of first fixed plate 312 and shift out, the change is damaged to convenient, the lightning protection subassembly can effectually avoid the collection flow box to be damaged by the too big collection flow box that leads to of electric current behind the thunderbolt, increase the security level of collection flow box.

Through improving the inside wiring, the device of current photovoltaic conflux case and arranging and mounting structure, simplify production technology, reduction in production cost is convenient for overhaul the conflux case and the accessory is changed, improves the reliability of photovoltaic conflux case operation.

As shown in fig. 5-7, an L-shaped sliding rail 611 is fixedly connected to the outer side surface of the box body 1, a slider 612 is fastened to the rear end of the L-shaped sliding rail 611, a sleeve 613 is sleeved on the upper end of the slider 612, the sleeve 613 is fastened in a vertical groove at the rear end of the L-shaped sliding rail 611, a spring 614 is fixedly connected to the upper surface of the slider 612, the upper end of the spring 614 is fixedly connected to the inner wall of the upper end of the sleeve 613, a fixing rod 615 is fixedly connected to the middle of the outer side surface of the sleeve 613, a connecting rod 616 is rotatably connected to the middle of the fixing rod 615, and the other end of the connecting rod 616 is connected to the outer wall of the box cover 2 on the side of the L-shaped sliding rail 611 through a rotating shaft. After case lid 2 opened, spring 614 promoted cutting ferrule 613 card and gone into the vertical inslot of L type slide rail 611 to make connecting rod 616 support case lid 2, fix case lid 2, thereby can avoid when using to converge the flow box and overhaul case lid 2 and close under the effect of external force, influence the maintenance then.

As shown in fig. 1, 3 and 4, the first mounting plate 311 is connected with first transparent insulating plates 7 through bolts at both sides of its upper end, two sets of first transparent insulating plates 7 are attached to both sides of the upper surface of the circuit breaker 413 at the lower side surfaces near to each other, and a second transparent insulating plate 8 is connected with the copper bar 419 above the anti-reflection diode 418 through bolts. The first insulating transparent plate 7 and the second insulating transparent plate 8 can be made of acrylic plates, have the function of safety protection, and are easy to observe whether the circuit is abnormal or not.

As shown in fig. 1-3, a wiring bridge 9 is fixedly connected to the inner wall of the outer side of the box body 1, and the wiring bridge 9 is made of rubber. Connecting wires between elements in the box body 1 can pass through the wiring bridge 9, so that wiring is attractive and tidy, and overhauling is facilitated.

As shown in fig. 1-3, the corners of the front and rear sides of the box 1 are fixedly connected with support legs 10, and the middle of the lower end of each support leg 10 is provided with a mounting hole. The stabilizer blade 10 is through welded connection between the box 1, can be together fixed with external object with the collection flow box through the mounting hole on the stabilizer blade 10, and stabilizer blade 10 supports box 1, avoids box 1 bottom and other object contact, increases its security, also improves sufficient space for the radiator 318 of box 1 bottom and is used for the heat dissipation.

The working principle is as follows: when the junction box needs to be overhauled, the box cover 2 is opened, so that the connecting rod 616 pulls the sliding block 612 to slide in the L-shaped sliding rail 611, after the box cover 2 is completely opened, the sliding block 612 is located at the rearmost end of the L-shaped sliding rail 611, and the spring 614 pushes the clamping sleeve 613 to be clamped into a vertical groove at the rear end of the L-shaped sliding rail 611, so that the connecting rod 616 is fixed, and then the box cover 2 is fixed;

by unscrewing the bolts between the first mounting plate 311, the second mounting plate 313 and the third mounting plate 316 and the box body 1, at this time, the first mounting plate 311, the second mounting plate 313 and the third mounting plate 316 can be removed from the box body 1, the current collection module 415, the negative fuse 416 and the positive fuse 417 can be half-slid from one end of the second fixing plate 314, the third fixing plate 315 and the fourth fixing plate 317, the waterproof joint 411, the surge protector 511 and the signal lightning protector 512 can be half-slid from one end of the first fixing plate 312, the circuit breaker 413 and the anti-reverse diode 418 can be removed from the bolts respectively connected between the first mounting plate 311 and the heat sink 318, the circuit breaker 413 and the anti-reverse diode 418 can be removed, and damaged components can be replaced as required;

after the maintenance is completed, the fixing rod 615 is pressed downwards, so that the cutting sleeve 613 is completely clamped on the slider 612, and at this time, the cutting sleeve 613 is moved out of the vertical groove at the rear end of the L-shaped sliding rail 611, and the case cover 2 is closed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a photovoltaic lightning combiner box, includes box (1), its characterized in that: the rear end of the box body (1) is connected with a box cover (2) through a hinge, a mounting assembly is arranged inside the box body (1), a photovoltaic confluence assembly and a lightning protection assembly are mounted on the mounting assembly, and a supporting mechanism is arranged on one side of the box body (1); the supporting mechanism is used for supporting and fixing the opened box cover (2).

2. The photovoltaic lightning protection combiner box of claim 1, wherein: the mounting assembly comprises a first mounting plate (311), a first fixing plate (312), a second mounting plate (313), a second fixing plate (314), a third fixing plate (315), a third mounting plate (316), a fourth fixing plate (317) and a radiator (318), wherein the rear end inside the box body (1) is connected with the first mounting plate (311) through bolts, the first fixing plate (312) is fixedly mounted on one side of the upper surface of the first mounting plate (311), the second mounting plate (313) is connected on one side of the inside of the front end of the box body (1) through bolts, the second fixing plate (314) is fixedly mounted on one side of the upper surface of the second mounting plate (313) close to the inner wall of the box body (1), the third fixing plate (315) is fixedly mounted on the other side of the upper surface of the second mounting plate (313), and the third mounting plate (316) is connected in the middle of the inside of the front end of the box body (1) through bolts, the middle part of the upper surface of the third mounting plate (316) is fixedly provided with a fourth fixing plate (317), and one end of the lower side surface of the box body (1) far away from the second mounting plate (313) is connected with a radiator (318) through a bolt.

3. The photovoltaic lightning protection combiner box of claim 2, wherein: the photovoltaic confluence assembly comprises a waterproof connector (411), a photovoltaic connector (412), a circuit breaker (413), a host module (414), a current collection module (415), a negative fuse (416), a positive fuse (417), an anti-reverse diode (418) and a copper bar (419), the waterproof connector (411) and the photovoltaic connector (412) are respectively and fixedly installed at the front end and the rear end of one side, close to the second mounting plate (313), of the box body (1), the circuit breaker (413) is connected to the middle of the upper surface of the first mounting plate (311) through a bolt, the host module (414) is fixedly installed at the rear end of the first fixing plate (312), the current collection module (415), the negative fuse (416) and the positive fuse (417) are respectively and fixedly installed on the second fixing plate (314), the third fixing plate (315) and the fourth fixing plate (317), and the anti-reverse diode (418) is connected to the upper surface of the radiator (318) through a bolt, and the circuit breaker (413) is connected with the terminals of the negative fuse (416) and the anti-reverse diode (418) through a copper bar (419).

4. The photovoltaic lightning protection combiner box of claim 2, wherein: the lightning protection assembly comprises a surge protector (511) and a signal lightning protector (512), the surge protector (511) is fixedly installed in the middle of the first fixing plate (312), and the signal lightning protector (512) is fixedly installed at the front end of the first fixing plate (312).

5. The photovoltaic lightning protection combiner box of claim 1, wherein: the outer side surface of the box body (1) is fixedly connected with an L-shaped sliding rail (611), the rear end of the L-shaped sliding rail (611) is clamped with a sliding block (612), a clamping sleeve (613) is sleeved at the upper end of the sliding block (612), the clamping sleeve (613) is clamped in a vertical groove at the rear end of the L-shaped sliding rail (611), a spring (614) is fixedly connected to the upper surface of the sliding block (612), the upper end of the spring (614) is fixedly connected with the inner wall of the upper end of the clamping sleeve (613), a fixing rod (615) is fixedly connected to the middle of the outer side surface of the clamping sleeve (613), a connecting rod (616) is rotatably connected to the middle of the fixing rod (615), and the other end of the connecting rod (616) is connected with the outer wall of the box cover (2) on one side of the L-shaped sliding rail (611) through a rotating shaft.

6. The photovoltaic lightning protection combiner box of claim 3, wherein: the both sides switch-on of first mounting panel (311) upper end has first insulating transparent plate (7), and is two sets of first insulating transparent plate (7) are close to the downside surface of one end each other and laminate with the both sides of circuit breaker (413) upper surface respectively, are located there is second insulating transparent plate (8) through bolted connection on copper bar (419) of preventing reverse diode (418) top.

7. The photovoltaic lightning protection combiner box of claim 1, wherein: the inner wall of the outer side of the box body (1) is fixedly connected with a wiring bridge (9), and the wiring bridge (9) is made of rubber.

8. The photovoltaic lightning protection combiner box of claim 1, wherein: the corner of the two sides of the front and the back of the box body (1) is fixedly connected with support legs (10), and the middle of the lower end of each support leg (10) is provided with a mounting hole.