CN202373602U

CN202373602U - Conjunction box

Info

Publication number: CN202373602U
Application number: CN2011202302455U
Authority: CN
Inventors: 段正刚
Original assignee: Suzhou QC Solar Co Ltd
Current assignee: Suzhou QC Solar Co Ltd
Priority date: 2011-07-01
Filing date: 2011-07-01
Publication date: 2012-08-08
Anticipated expiration: 2021-07-01

Abstract

The utility model relates to a conjunction box. The conjunction box comprises a box body, a cover body, and a cable assembly. The box body comprises sidewalls and a base plate. The sidewalls comprise a first sidewall and a second sidewall. The first sidewall is positioned on the inner side of the second sidewall, and an accommodating space is formed between the first sidewall and the base plate. An interval space is formed between the first sidewall and the second sidewall. The cover body covers above the box body. A protruding rib is protruded on the lower surface of the cover body and is arranged to match the interval space. The cable assembly is connected outside the box body. The beneficial effects of the utility model are that the conjunction box exhibits fine waterproof performance and a high safety coefficient.

Description

Terminal box

Technical field

The utility model relates to a kind of photovoltaic and uses terminal box, relates in particular to the terminal box that a kind of water resistance is good, coefficient of safety is high.

Background technology

Because single solar module power output often is not enough to provide the power of actual demand, so they constitute solar cell array with the mode of series, parallel usually and meet design requirement.When choosing the solar module forming array, usually all can run into the power output that causes owing to the electrical parameter of each assembly of series and parallel is inconsistent behind the series and parallel less than single component power output sum, be referred to as mismatch loss.Simultaneously, when coupled in series,, can cause array to be operated in a certain state following time if electric current does not match; Individual component is in reverse bias in the array, forms " hot spot ", when parallel connection, does not match as if voltage; Can cause array to be operated in a certain state following time, form in the array " circulation "." hot spot " and " circulation " all can make the individual component in the series and parallel connection be in the state of consumed power, and possibly undermine assembly life-span.The special solar cell array of working as can't be operated under the uniform illumination, and the mismatch loss of generation is just bigger.For the power of alleviating this moment descends, give bypass diode of a battery strings reverse parallel connection in each assembly or the assembly usually, stop an assembly or battery strings branch road to consume the electric energy of whole array.Conventional terminal box, the electric current that solar module is produced comes together in the terminal box, and concentrated AC inverter or the direct-flow electricity utilization apparatus of outputing to, and three bypass diodes that conventional terminal box is equipped with are used to protect three string operating circuits of assembly.

The power optimization device, promptly DC-DC power optimization utensil has and reduces solar module and block or the generated output loss under the situation that do not match of electrical component performance at shade, and low current is converted into high electric current, further reduces the effect of the power loss of electricity generation system.The intelligence terminal box is the terminal box that is provided with the power optimization device, and the power optimization device can be wholely set with conventional terminal box, also can be separately set in the housing to be connected in series with conventional terminal box then.

In the existing terminal box, no matter be conventional terminal box or intelligent terminal box, waterproof is still urgent problem with safety.

The utility model content

To the deficiency of prior art, the technical problem that the utility model solves provides the terminal box that a kind of water resistance is good, coefficient of safety is high.

For solving the problems of the technologies described above; The technical scheme of the utility model is achieved in that a kind of terminal box; Said terminal box comprises: box body, and said box body comprises sidewall and base plate, said sidewall comprises the first side wall and second sidewall; The first side wall the inboard of second sidewall and and base plate between form a receiving space, form clearance space between the first side wall and second sidewall; Lid is covered in the top of said box body, and the lower surface of said lid has protruded out fin, and said fin cooperates said clearance space setting; CA cable assembly is connected in the outside of said box body.

As the further improvement of the utility model, irritating in the said clearance space has glue, is connected with support arm between the said the first side wall and second sidewall.

As the further improvement of the utility model, the upper surface of said the first side wall is lower than the upper surface of said second sidewall.

Further improvement as the utility model; The lower surface of said lid comprises first supporting surface of " mouth " font; Said first supporting surface is positioned at the inboard of said fin and cooperates said the first side wall setting, and the side of said lid fits in the inner wall surface of said second sidewall.

As the further improvement of the utility model, the upper surface of the upper surface of said lid and said second sidewall is positioned at same plane.

As the further improvement of the utility model, the lower surface of said lid comprises second supporting surface of " mouth " shape, and said second supporting surface is positioned at the outside of said fin and cooperates the said second sidewall setting.

Further improvement as the utility model; Said terminal box also comprises a power optimization device; Said power optimization device is positioned at the receiving space of said box body and electrically connects said CA cable assembly; Said CA cable assembly comprises first CA cable assembly and second CA cable assembly, and first CA cable assembly and second CA cable assembly are symmetrically set in the both sides of box body, and said first CA cable assembly and second CA cable assembly comprise electrode cable and negative pole cable respectively.

As the further improvement of the utility model, the upper surface of said base plate has upwards protruded out ribs, and said ribs is supported in the lower surface of said power optimization device.

As the further improvement of the utility model, also be provided with buckle in the said box body, said buckle is arranged at the side of said power optimization device and is barred from the upper surface of said power optimization device.

As the further improvement of the utility model, the lower surface of said lid has protruded out reinforcement, and said reinforcement cooperates the upper surface setting of said power optimization device.

Compared with prior art, the beneficial effect of the utility model is: the sidewall of box body is set to bilayer, and coefficient of safety is high, can realize well sealing with lid simultaneously, and water resistance is good.

Description of drawings

Shown in Figure 1 is the exploded perspective view of intelligent terminal box in the utility model preferred forms.

Shown in Figure 2 is the assembling sketch map of intelligent terminal box in the utility model preferred forms.

Shown in Figure 3 is the three-dimensional enlarged diagram of the box body of intelligent terminal box in the utility model preferred forms.

Shown in Figure 4 is the amplification schematic perspective view of another angle of intelligent terminal box lid in the utility model preferred forms.

Embodiment

Below will combine accompanying drawing to be example with intelligent terminal box is described in detail the terminal box of the utility model; But the application of the utility model is not limited in intelligent terminal box; It can be applied to the terminal box of other types equally, like the terminal box (the power optimization device is not set) of routine.

Intelligence terminal box main feature is to be provided with the power optimization device; It is through connecting with conventional terminal box; Have and reduce solar module and block or the generated output loss under the situation that do not match of electrical component performance at shade; Low current is converted into high electric current, further reduces the effect of the power loss of electricity generation system.

Join illustrated in figures 1 and 2ly, intelligent terminal box comprises box body 1, lid 2, power optimization device 3 and CA cable assembly 4.Lid 2 be covered in box body 1 top and and box body 1 between realize sealing, power optimization device 3 is fixed in the box body 1, CA cable assembly 4 is connected in the outside of box body 1 and is electrically connected at the power optimization device 3 in the box body 1.

Ginseng Fig. 1 and shown in Figure 3, box body 1 is rectangular, comprises sidewall 11 and base plate 12, and sidewall 11 vertically convexedly stretches in the top of base plate 12 and one-body molded with base plate 12.Sidewall 11 comprises the first side wall 111 and second sidewall 112; The first side wall 111 is positioned at the inboard of second sidewall 112; Between the first side wall 111 and second sidewall 112, form a clearance space 113; The groove of said clearance space 113 end to end formation one " mouth " fonts forms a receiving space 13 between the first side wall 111 and the base plate 12.Sidewall 11 is set to two-layer, has increased the creepage distance between box body 1 inboard and the outside, and coefficient of safety is high.Between the first side wall 111 and second sidewall 112, can also be provided with support arm (not shown); Support arm be positioned at clearance space 113 and be held in the first side wall 111 respectively and second sidewall 112 on; The setting of support arm can be so that box body 1 be more firm, and is crashproof and not yielding.

Join shown in Figure 4; Lid 2 is covered in the top of said box body 1, and the lower surface of lid 2 has protruded out fin 21, and fin 21 is near the edge setting of lid 2 and formation " mouth " font that joins end to end; When lid 2 and box body 1 were interlocked, said fin 21 placed in the clearance space 113 just.The inboard of fin 21 and the outside are respectively equipped with first supporting surface 22 and second supporting surface 23; First supporting surface 22 and second supporting surface 23 are formed at the lower surface of lid 2 respectively, and wherein, first supporting surface 22 cooperates the first side wall 111 to be provided with; Second supporting surface 23 cooperates second sidewall 112 to be provided with; After lid 2 and box body 1 fastened, the upper surface that the upper surface of the first side wall 111 is supported in first supporting surface, 22, the second sidewalls 112 was supported in second supporting surface 23.In order to realize well sealing between lid 2 and the box body 1, the upper surface of the first side wall 111 and second sidewall 112 is arranged in the same plane, so that realize sealing between the lower surface of the upper surface of the first side wall 111 and second sidewall 112 while and lid 2; Gap between the first side wall 111 and second sidewall 112 also can be arranged to identical just with the thickness of fin 21.Be easy to expect that the upper surface of the first side wall 111 and second sidewall 112 also can be positioned at different height, at this moment, the first side wall 111 and second sidewall 112 can not simultaneously and be realized sealing between lid 2 lower surfaces.In order further to increase sealing effectiveness; On the basis of said structure, can be prior to encapsulatings in the clearance space 113, and then lid 2 and box body 1 be interlocked; So; Glue can fill up lid 2 and box body 1 slit between combining, and has further increased sealing effectiveness, thereby has played waterproof effect.The lower surface of lid 2 also is provided with reinforcement 24, and reinforcement 24 rules are provided with, and effectively prevent the distortion of lid 2.Also protruded out second fin 25 around the reinforcement 24; Second fin, 25 parallel ribs 21 are provided with, and first supporting surface 22 constitutes clearance space 26 between second fin 25 and the fin 21 between second fin 25 and fin 21; This clearance space 26 is in order to ccontaining the first side wall 111; Also can be in this clearance space 26 through the sealing between encapsulating realization in advance and the box body 1, simultaneously, being provided with of second fin 25 can be limited to the first side wall 111 in the clearance space 26; Lid 2 is more firm after fastening with box body 1, and lid 2 is difficult for rocking.

In other embodiments; Lid 2 can also be provided with like this: lid 2 reductions that will be positioned at second supporting surface 23 are fallen; The lid 2 that promptly keeps fin 21 and be positioned at fin 21 inboards; Reduce the height of the first side wall 111 simultaneously, and make the difference in height between the first side wall 111 and second sidewall, 112 upper surfaces equal the thickness of lid 2.At this moment; After lid 2 fastened with box body 1, fin 21 placed in the clearance space 113, and the upper surface of the first side wall 111 is supported in first supporting surface 22; The side of lid 2 fits in the inner wall surface of said second sidewall 112, and the upper surface of the upper surface of second sidewall 112 and lid 2 is positioned at one side.In this execution mode,, also can adopt in advance methods such as encapsulating in order to realize sealing.

Ginseng Fig. 1 is to shown in Figure 3, and power optimization device 3 roughly is a plate body, and it is positioned at the receiving space 13 of box body 1.The upper surface of base plate 12 has upwards protruded out ribs 121, and ribs 121 is supported in the lower surface of said power optimization device 3, and is positioned at the lateral edges of power optimization device 3.Ribs 121 makes and forms clearance space between power optimization device 3 and the base plate 12, convenient heat radiation.Extended upward buckle 122 from the surface of base plate 12; Buckle 122 is arranged at the left and right sides side of power optimization device 3 and is barred from the upper surface of said power optimization device 3; Move up with power-limiting optimization means 3; The left and right sides side of power optimization device 3 is respectively equipped with and also is provided with baffle plate (not label) between 122, two buckles 122 of two buckles, and this baffle plate and buckle 122 actings in conjunction are in order to the move left and right of power-limiting optimization means 3.The position, four angles of power optimization device 3 also is provided with abutment 123; Abutment 123 is extended vertically upward and is constituted rectangle frame respectively and between the first side wall 111 from base plate 12; A side of this rectangle frame is used for being held in the top or the bottom of power optimization device 3; This rectangle frame can be protected the gas permeable devices 124 of the side that sets within it simultaneously, and the bottom of attending of power optimization device 3 is located by abutment 123 respectively, with moving forward and backward of power-limiting optimization means 3.Through the effect of buckle 122, baffle plate and abutment 123, make power optimization device 3 up and down and fore-and-aft direction all be defined, power optimization device 3 has been played good fixation.The upper surface of power optimization device 3 protrudes out some chips, and for the inner space of rational deployment box body, the lower surface of lid 2 can not be provided with reinforcement in the position of respective chip, to make things convenient for chip to convexedly stretch in not to be provided with the space of reinforcement.

Ginseng Fig. 2, CA cable assembly 4 is connected in the outside of said box body 1.Said CA cable assembly 4 comprises first CA cable assembly 41 and second CA cable assembly 42; First CA cable assembly 41 and second CA cable assembly 42 are symmetrically set in the both sides of box body 1, and first CA cable assembly 41 and second CA cable assembly 42 comprise electrode cable and negative pole cable (not label) respectively.First CA cable assembly 41 and second CA cable assembly 42 extend to respectively box body 1 inside and and power optimization device 3 between realize to electrically connect.Be tightly connected between first CA cable assembly 41 and second CA cable assembly 42 and the box body 1, the connected mode industry is widely-used, so repeat no more.In application, one of them is used to first CA cable assembly 41 and second CA cable assembly 42 be connected conventional terminal box, and another CA cable assembly is used to connect adjacent solar module.

To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned example embodiment, and under the situation of spirit that does not deviate from the utility model or essential characteristic, can realize the utility model with other concrete form.Therefore; No matter from which point; All should regard embodiment as exemplary; And be nonrestrictive, the scope of the utility model is limited accompanying claims rather than above-mentioned explanation, therefore is intended to the implication of the equivalents that drops on claim and all changes in the scope are included in the utility model.Should any Reference numeral in the claim be regarded as limit related claim.

In addition; Describing according to execution mode though should be appreciated that this specification, is not that each execution mode only comprises an independently technical scheme; This narrating mode of specification only is for clarity sake; Those skilled in the art should make specification as a whole, and the technical scheme among each embodiment also can form other execution modes that it will be appreciated by those skilled in the art that through appropriate combination.

Claims

1. a terminal box is characterized in that, said terminal box comprises:

Box body, said box body comprises sidewall and base plate, said sidewall comprises the first side wall and second sidewall, the first side wall the inboard of second sidewall and and base plate between form a receiving space, form clearance space between the first side wall and second sidewall;

Lid is covered in the top of said box body, and the lower surface of said lid has protruded out fin, and said fin cooperates said clearance space setting;

CA cable assembly is connected in the outside of said box body.

2. terminal box according to claim 1 is characterized in that: irritating in the said clearance space has glue, is connected with support arm between the said the first side wall and second sidewall.

, terminal box according to claim 1 and 2, it is characterized in that: the upper surface of said the first side wall is lower than the upper surface of said second sidewall.

4., terminal box according to claim 3; It is characterized in that: the lower surface of said lid comprises first supporting surface of " mouth " font; Said first supporting surface is positioned at the inboard of said fin and cooperates said the first side wall setting, and the side of said lid fits in the inner wall surface of said second sidewall.

5. terminal box according to claim 4 is characterized in that: the upper surface of the upper surface of said lid and said second sidewall is positioned at same plane.

6. terminal box according to claim 1 and 2 is characterized in that: the lower surface of said lid comprises second supporting surface of " mouth " font, and said second supporting surface is positioned at the outside of said fin and cooperates the said second sidewall setting.

7. terminal box according to claim 1; It is characterized in that: said terminal box also comprises a power optimization device; Said power optimization device is positioned at the receiving space of said box body and electrically connects said CA cable assembly; Said CA cable assembly comprises first CA cable assembly and second CA cable assembly, and first CA cable assembly and second CA cable assembly are symmetrically set in the both sides of box body, and said first CA cable assembly and second CA cable assembly comprise electrode cable and negative pole cable respectively.

8. terminal box according to claim 7 is characterized in that: the upper surface of said base plate has upwards protruded out ribs, and said ribs is supported in the lower surface of said power optimization device.

9. terminal box according to claim 7 is characterized in that: also be provided with buckle in the said box body, said buckle is arranged at the side of said power optimization device and is barred from the upper surface of said power optimization device.

10. terminal box according to claim 7 is characterized in that: the lower surface of said lid has protruded out reinforcement, and said reinforcement cooperates the upper surface setting of said power optimization device.