Terminal box and adopt the solar module and the solar cell system of this terminal box
Technical field
The utility model relates to field of solar thermal power generation, relate in particular to the solar module that utilizes photovoltaic effect generating be applied in this assembly terminal box, and adopt the solar cell system of this assembly.
Background technology
Solar energy is compared with traditional fossil fuel as a kind of emerging energy, has the advantage of each side such as inexhaustible, clean environment firendly.At present to utilize mode be through solar module the luminous energy that receives to be converted into electric energy output to main a kind of solar energy, and it can be by encapsulating and arrange by square formation the area battery assembly that forms after plurality of solar cells (or claiming photovoltaic cell) series connection.Wherein, solar cell absorbs luminous energy, and the accumulation of heterocharge appears in the battery two ends; Promptly produce " photovoltage ", Here it is " photovoltaic effect ", under the effect of photovoltaic effect; The two ends of solar cell produce electromotive force, thereby transform light energy is become electric energy.
In practical application, be that core is formed solar cell system usually with the solar cell.A complete solar cell system mainly comprises solar module, terminal box and external functional module etc.External functional module can be the device that is used for realizing voltage transitions, like inverter.
Existing solar cell system all is that the every substrate that solar cell is installed is together in series usually, connects a total large-scale inverter then, follows the tracks of the maximum power point of all substrate in combination after together through this inverter.But the maximum power point after the whole base plate that the maximum power point that obtains is often the represented combination; And each substrate might not all reach maximum power point separately; So also have the back side that is employed in every solar cell substrate that a miniature inverter all is set in the existing design; This inverter is connected with terminal box, utilizes this inverter to follow the tracks of the maximum power point of every solar cell substrate, thereby makes every solar cell substrate under maximum maximum power point, to work.This miniature inverter can also make the direct current that every solar cell substrate produced be directly changed into alternating current, is connected with external loading or electrical network then to be used for power supply.
The connected mode of existing terminal box and inverter is shown in Chinese utility model patent bulletin CN201754410U; Terminal box is installed in the centre of every solar cell substrate; It is provided with connector, and inverter can directly be plugged on the terminal box to realize function corresponding.Terminal box roughly is strip, is fixed in the middle of the backboard through bonding mode.The end that inverter and terminal box are pegged graft is provided with stay, can cooperate with the locking deck of relative set on the terminal box and realize snap close.In addition, also be provided with suspension hook, can cooperate with corresponding through hole on the substrate and guarantee inverter can be fixed on the substrate and can not fall down in the bottom of inverter.
Yet the mounting structure of this inverter is comparatively complicated, because not only need between terminal box and inverter, snap close be set, also need between solar cell substrate and inverter, manner be set.In addition, also difform through hole will be set on the solar cell substrate, like L type or inverted T shape, this has further increased the manufacturing process and the cost of solar module undoubtedly again.
The utility model content
In order to solve the problems referred to above of prior art, the purpose of the utility model provides a kind of solar module, and it not only can guarantee that its terminal box and external functional module realize fixing reliable the connection, and realizes the simple in structure of connection.
The purpose of the utility model also is to provide a kind of solar cell system that adopts above-mentioned solar module.
The purpose of the utility model also is to provide a kind of terminal box that is applied in the above-mentioned solar module.
One of to achieve these goals, the utility model provides a kind of solar module, and it comprises:
Substrate, have be used to receive the positive of irradiation and with positive opposing backside surface;
Terminal box is arranged on the back side of said substrate, and comprise the terminal box body, from terminal box body both sides extended a pair of fixed arm, and accommodating area between said two fixed arms, said fixed arm is provided with the holding section that can cooperate with external functional module.
As the further improvement of the utility model, said fixed arm comprises the lateral part that laterally extends from terminal box body both sides, and the longitudinal component of vertical said lateral part.
As the further improvement of the utility model, said holding section comprises a pair of buckling plate that the inboard by said lateral part vertically protrudes out.
Further improvement as the utility model; Said a pair of buckling plate comprises base plate and the top board that distributes along vertical; Form between said base plate and top board can with the recess of external functional module edge mate, and on bearing of trend, the extended length of said base plate exceeds the extended length of top board.
As the further improvement of the utility model, said holding section comprises a pair of guide plate that laterally protrudes out from the inboard of said longitudinal component.
Further improvement as the utility model; Said a pair of guide plate comprises end guide plate and the top guide plate that is arranged in parallel; Form guide channel between guide plate of the said end and top guide plate, and on bearing of trend, the extended length of guide plate of the said end exceeds the length that the top guide plate extends.
As the further improvement of the utility model, said accommodating area is " ㄇ " shape, and said holding section protrudes in the said accommodating area on said fixed arm.
As the further improvement of the utility model, also be provided with on the said fixed arm can with the buckling hole of external functional module buckle.
In order to realize above-mentioned another purpose, the utility model also provides a kind of solar cell system, and it comprises:
Solar module, it comprises substrate and terminal box; Wherein substrate have be used to receive the positive of irradiation and with positive opposing backside surface; Terminal box is arranged on the back side of said substrate, and it comprises that the terminal box body reaches from terminal box body both sides extended fixed arm, and said fixed arm is provided with the holding section;
Inverter, it is positioned at the back side of said substrate and has middle body and the marginal portion thin than middle body, and said marginal portion cooperates with said holding section.
As the further improvement of the utility model, said fixed arm comprises the lateral part that laterally extends from terminal box body both sides, and the longitudinal component of vertical said lateral part; Said inverter section is housed in the zone that said lateral part and longitudinal component surround.
As the further improvement of the utility model, said holding section comprises a pair of buckling plate that the inboard by said lateral part vertically protrudes out, and the marginal portion of said inverter snaps between the said a pair of buckling plate.
As the further improvement of the utility model, said holding section comprises a pair of guide plate that laterally protrudes out from the inboard of said longitudinal component, and the marginal portion of said inverter can slippage between said a pair of guide plate.
As the further improvement of the utility model, said fixed arm is provided with buckling hole; The marginal portion of said inverter is provided with the elastic fastening hook that cooperates with said buckling hole.
In order to realize above-mentioned another purpose, the utility model also provides a kind of terminal box, is used for inverter is installed to the solar cell substrate back side, and this terminal box comprises:
The terminal box body;
A pair of fixed arm, extended from said terminal box body both sides; And
Accommodating area, between said a pair of fixed arm, each fixed arm has at least one holding section that can cooperate with said inverter.
As the further improvement of the utility model, said fixed arm comprises the lateral part that laterally extends from terminal box body both sides, reaches a pair of longitudinal component perpendicular to said lateral part.
As the further improvement of the utility model, said holding section comprises a pair of buckling plate that the inside edge longitudinal extension by said lateral part goes out.
As the further improvement of the utility model, said a pair of buckling plate comprises top board and the base plate that distributes along vertical, form between said top board and base plate can with the recess of inverter edge mate, wherein said base plate longitudinal extension is longer than top board.
As the further improvement of the utility model, the holding section of said fixed arm comprises a pair of guide plate that laterally protrudes out from the inside edge of said longitudinal component.
Further improvement as the utility model; Said a pair of guide plate comprises end guide plate and the top guide plate parallel with guide plate of the said end; Guide plate of the said end and top guide plate define a guide channel betwixt, and the top guide plate is longer than in the guide plate horizontal expansion of the wherein said end.
As the further improvement of the utility model, the setting that takes the shape of the letter U of said a pair of fixed arm, wherein said holding section is in said fixed arm extends into said accommodating area.
As the further improvement of the utility model, said fixed arm comprises the buckling hole that can cooperate with said inverter.
Compared with prior art; The advantage of the utility model is: terminal box is provided with a pair of fixed arm and is formed on the accommodating area between the fixed arm; Increase the bearing area of the external connection function module of terminal box, thereby only depended on terminal box just can satisfy the load-bearing requirement of external functional module.Through this set, simplified the syndeton between external functional module and terminal box and solar cell substrate, thereby reduced the manufacturing process and the cost of solar module.
Description of drawings
Fig. 1 is in the embodiment of the utility model solar module, and solar junction box is installed to the floor map behind the substrate of solar module;
Fig. 2 is the perspective exploded view of terminal box shown in Figure 1;
Fig. 3 is the schematic perspective view at visual angle, terminal box top shown in Figure 2, has wherein shown the some grooves that are arranged on the terminal box roof;
Fig. 4 and Fig. 3 are similar, and the groove that wherein is arranged on the roof has been poured glue;
Fig. 5 has shown the vertical view that is arranged on the connector on the terminal box shown in Figure 2;
Fig. 6 is the schematic perspective view after an inverter is plugged into terminal box shown in Figure 1;
Fig. 7 is inverter and the perspective exploded view of terminal box among Fig. 6.
Embodiment
Below will combine each execution mode shown in the drawings that the utility model is described in detail.But these execution modes do not limit the utility model, and the conversion on the structure that those of ordinary skill in the art makes according to these execution modes, method or the function all is included in the protection range of the utility model.
Shown in Figure 1 is an embodiment of a kind of solar module in the utility model.In this execution mode, solar module comprises solar cell substrate 10 and the terminal box 30 that is installed in the solar cell substrate back side.The front of solar cell substrate 10 is used to absorb luminous energy; And luminous energy is converted into electric energy output; Usually be provided with plurality of solar cells (or claim photovoltaic cell) on it, encapsulate through framework 20 through the series connection back fixing, and by the area battery assembly of square formation arrangement formation.Wherein, solar cell absorbs luminous energy, and the accumulation of heterocharge appears in the battery two ends, promptly produces " photovoltage ", and Here it is " photovoltaic effect ".Under the effect of photovoltaic effect, the two ends of solar cell produce electromotive force, thereby transform light energy is become electric energy.Solar cell generally is made up of two or polylith wafer, and semi-conducting material is silicon normally, like monocrystalline silicon, polysilicon, amorphous silicon etc.Solar cell substrate 10 comprise be used for receiving the positive of solar irradiation and with positive opposing backside surface, only shown the back side of substrate among Fig. 1.Around solar cell substrate 10, be provided with frame 20, be used for plurality of solar cells is fixed together.
Cooperation is with reference to Fig. 2 and shown in Figure 3, and in this execution mode, solar junction box 30 comprises terminal box body 31 and the fixed arm 32 that extends out from body.Wherein, terminal box body 31 comprises box body 314 and can cover the lid 313 on box body.The both lateral sides of box body 314 is along vertically being provided with a pair of buckling groove; Correspondingly; The both lateral sides of lid 313 is along vertically extending a make-up gripping arm downwards, and through this structure, lid 313 is assembled into 314 last times of box body downwards; Also detain in the corresponding buckling groove that extends on the box body 314 of button gripping arm on the lid 313 and hold, thereby guarantee lid 313 and box body 314 secure fixation.Lid 313 is provided with sealing ring at its place of keeping to the side, bottom, through this structure, can make lid 313 after covering on the box body 314, guarantees to realize reliable sealing between the two, so that keep dry in the box body 314.Cooperate with reference to shown in Figure 5, on a longitudinal side wall of box body 314, protrude out a connector 311, be used to supply external functional module to peg graft.Offer interface on the end face of connector 311; The outside at the projection of connector 311 is surrounded with a sealing ring 312; The cross section of sealing circle 312 is the E font, through this structure, can make that external functional module and terminal box are pegged graft after; Form the sealing of multilayer ground between the two, thereby avoid in water or the box body 31 of steam through both junction entering terminal boxes.
Fixed arm 32 comprises from the lateral part 321 that terminal box body 31 laterally extends and the further extended a pair of longitudinal component 322 from the two ends of lateral part.Longitudinal component 322 is provided with lateral part 321 at an angle, and in this execution mode, this angle is the right angle, and certainly in other embodiments, this angle also can be acute angle or obtuse angle.Terminal box 30 has bottom surface 33 and the end face 34 relative with the bottom surface, the body 31 of terminal box 30 and fixed arm 32 common definition one " ㄇ " shape accommodating area 40, and fixed arm 32 is provided with the holding section that protrudes in this accommodating area 40.As shown in Figure 2, the holding section comprises the buckling plate that the inboard by the lateral part 321 of fixed arm vertically protrudes out.In this execution mode, the quantity of buckling plate is two couple who is distributed in terminal box body 31 both lateral sides, certainly in other embodiments, can be a pair of, how rightly also can be.In this execution mode, each comprises along vertical top board that distributes 336 and base plate 335 buckling plate.Wherein base plate 335 extends from the bottom surface 33 of terminal box; Top board 336 extends from the end face 34 of terminal box; Between base plate and top board, form can with the recess 337 of external functional module edge mate, and on bearing of trend, base plate 335 extended length exceed top board 336 extended length.
With reference to shown in Figure 2, the holding section also comprises a pair of guide plate that is arranged in parallel that laterally protrudes out from the inboard of each longitudinal component 322 of fixed arm, certainly, in other embodiments, can only on a side longitudinal component 322 of fixed arm, guide plate be set.In this execution mode; Every pair of guide plate comprises along vertical top guide plate that distributes 334 and end guide plate 333; Wherein end guide plate 333 extends from the bottom surface 33 of terminal box, and top guide plate 334 extends from the end face 34 of terminal box, but between end guide plate and top guide plate, forms the guide channel that lengthwise extends; And on bearing of trend, guide plate 333 extended length in the end exceed top guide plate 334 extended length.Cooperation is with reference to Fig. 1, Fig. 6 and shown in Figure 7, and the end face 34 of terminal box is installed on the back side of solar cell substrate 10, about mounting means, detailed description is done in literary composition after the meeting.External function module 50 is inverter in this execution mode, certainly in other embodiments, also can be the device that is used for realizing other function.Inverter 50 comprises middle body and the marginal portion 51 thin than middle body.Be provided with the butt connector 53 that can peg graft with the connector 311 of terminal box at an end of middle body, a side of part 51 is provided with elastic fastening hook 52 on the edge of.In the process that inverter 50 and terminal box 30 are pegged graft; Guiding through guide plate; Inverter 50 slippage groups are gone in the accommodating area 40 of terminal box 30, and the edge 51 at inverter 50 tops snaps in the recess 337 of buckling plate, and make inverter 50 and terminal box 30 secure fixation.At a side longitudinal component of fixed arm, on the sidewall between the guide plate 329, offer buckling hole 328; Can cooperate with the grab of inverter 50 and with inverter and terminal box snap close, thereby further improve the reliability that external function module 50 is connected with terminal box 30.In other embodiments, this buckling hole and grab also can be separately positioned on other suitable positions of fixed arm and inverter.
When 50 groups of inverters go into terminal box 30 " ㄇ is " after the shape accommodating area 40; The lateral part 321 of fixed arm and longitudinal component 322 all can provide support inverter 50; Increased the bearing area of terminal box, thereby only depended on terminal box just can satisfy the load-bearing requirement of inverter inverter.In addition, in actual use, because the end face 34 of terminal box 30 contacts with the back side of solar cell substrate 10, so the bottom surface 33 of terminal box 30 is positioned at the below of end face 34; Extended length exceeds from the extended length of end face from the bottom surface because each is to buckling plate and guide plate again, thus increased terminal box further to the external function module bearing area, thus further promoted the load-bearing property of terminal box.
Cooperation is with reference to Fig. 3 and shown in Figure 4, and in this execution mode, terminal box is provided with the gluing zone, but glue coated, with terminal box 30 secure fixation on solar cell substrate 10.Glue can be directly to be coated in the gluing zone, also can be to be coated in this zone indirectly.As preferred embodiment, can on the end face 34 of terminal box, groove be set in advance, then glue is poured in the groove.In this execution mode, the gluing zone comprises the second area that is arranged on the first area that is positioned at the fixed arm position on the end face 34 and is positioned at terminal box body 31.Wherein the first area comprises first groove 325 that is provided with around fixed arm 32 top profiles; Second area comprises second groove 324 of closed-loop solderless wrapped connection line box body 31 top profiles; First groove 325 can be communicated with second groove 324, also can be not to be communicated with.Profile position, top at terminal box body 31 and fixed arm 32 is coated with glue, can terminal box 30 be bonded to reliably the back side of solar cell substrate 10, can reduce the consumption of glue again.In addition,, but make glue butted line box body 31 inside in second groove 324 effectively seal, prevent the infiltration of steam because second groove 324 is surrounded on the top open part of terminal box body 31.In addition; In some execution mode,, all also be provided with square through hole 329 in the outside of second groove 324 like this execution mode; The demoulding hole that this through hole 329 forms when withdrawing from for mould; Wherein, be provided with projection in the through hole in second groove, 324 outsides, can supply the bayonet socket pin on the lid 313 to insert and buckle.Equally, for guaranteeing sealing, second area has also comprised the sunk area of said second groove 324 both sides.Further preferably, the gluing zone also comprises the 3rd zone.The 3rd zone is included in some Cao of accommodating 326 that terminal box end face 34 is positioned at lateral part 321 place's longitudinal extensions, and this accepting groove 326 laterally arranges and is communicated with first groove 325, second groove 324.Through this set, can further improve terminal box 30 and the bonding soundness of solar module 10 backboards.
As shown in Figure 3, cooperate with reference to shown in Figure 1, be installed in the process of solar cell substrate 10 in terminal box 30, adjacent two outer side edges 323 of this terminal box 30 and two adjacent walls at a right angle of frame 20 against.Above-mentioned gluing zone comprises that also the outer side edges that is positioned at frame sidewall and terminal box is against the 4th zone of locating.In this execution mode, above-mentioned adjacent two outer side edges 323 of terminal box 30 are provided with and protrude into the some ribs 327 of four-range.Owing to the existence of rib 327, increased the bonding force of glue and frame, improved the reliability that terminal box is connected with substrate.Because terminal box and frame are bonding, can promote the load-bearing property of terminal box by frame, thereby after externally functional module is plugged on the terminal box, can also guarantee that the terminal box secure fixation is on the backboard of 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.