CN102237423B - Junction box, frame component and solar cell module - Google Patents

Abstract

Translated fromChinese

本发明公开了一种太阳能电池模块用接线盒、带有这种接线盒的边框组件以及包含这种接线盒的太阳能电池模块，太阳能电池模块具有电池板和边框组件，接线盒适于形成边框组件中的边框段或角接头的一部分并且沿着电池板边缘延伸，接线盒在所述延伸方向上具有第一端部和第二端部并且包括：本体，由绝缘材料制成并且包括夹持部和容置部，夹持部被构造成适于夹持电池板的边缘；接线电路板，安置在所述容置部中且具有连接线路，连接线路中设有至少一个开关型二极管；公连接缆线，其连接着所述连接线路的一端且带有位于所述第一端部处的插头；以及母连接缆线，其连接着所述连接线路的另一端且带有位于所述第二端部处的插座。根据本申请的太阳能电池模块容易安装及维护，减少线缆的使用、固定及保护，且接线盒不易受损。

The invention discloses a junction box for a solar cell module, a frame assembly with the junction box and a solar cell module containing the junction box. The solar cell module has a battery panel and a frame assembly, and the junction box is suitable for forming a frame assembly A part of the frame segment or corner joint in and extends along the edge of the battery panel, the junction box has a first end and a second end in the direction of extension and includes: a body made of insulating material and including a clamping portion And the accommodating portion, the clamping portion is configured to be suitable for clamping the edge of the battery board; the wiring circuit board is placed in the accommodating portion and has a connecting line, and at least one switching diode is arranged in the connecting line; the male connection a cable connected to one end of the connection line with a plug at the first end; and a female connection cable connected to the other end of the connection line with a plug at the second socket at the end. The solar battery module according to the present application is easy to install and maintain, reduces the use, fixing and protection of cables, and the junction box is not easily damaged.

Description

Terminal box, border component and solar module

Technical field

The solar module that the application relates to a kind of terminal box for solar module and comprises this terminal box.

Background technology

Solar cell (photovoltaic cell) has obtained fast development in recent years, and various solar cells all have made great progress aspect two of technology and business.

Briefly introduce the main species of solar panel below:

(1) monocrystaline silicon solar cell

The photoelectric conversion efficiency of monocrystaline silicon solar cell is 15% left and right at present, the highest reaches 24%, this is that in the solar cell of current all kinds, photoelectric conversion efficiency is the highest, but cost of manufacture is very large, so that it can't extensively and at large be used in a large number.Because monocrystalline silicon generally adopts toughened glass and waterproof resin, encapsulate, therefore it is sturdy and durable, and generally can reach 15 years useful life, reaches as high as 25 years.

(2) polysilicon solar cell

Manufacture craft and the single crystal silicon solar cell of polycrystalline silicon solar cell are similar, but the photoelectric conversion efficiency of polysilicon solar cell will reduce much, its photoelectric conversion efficiency approximately 12% left and right (world's peak efficiency polysilicon solar cell that Japanese Sharp listing on July 1st, 2004 efficiency is 14.8%).From cost of manufacture, more cheap than monocrystaline silicon solar cell, material is manufactured easy, saves power consumption, and total production cost is lower, is therefore developed in a large number.In addition, the useful life of polysilicon solar cell is also short than monocrystaline silicon solar cell.From performance and price recently, monocrystaline silicon solar cell also slightly well.

(3) non-crystal silicon solar cell

Amorphous silicon solar cell is the Novel thin membrane type solar cell occurring in 1976, it is completely different from the manufacture method of monocrystalline silicon and polycrystalline silicon solar cell, and technical process is simplified greatly, and silicon materials consumption is little, power consumption is lower, and its major advantage is also can generate electricity at low light condition.But the subject matter that amorphous silicon solar cell exists is that photoelectric conversion efficiency is on the low side, international most advanced level is 10% left and right at present, and stable not, along with the prolongation of time, and its conversion efficiency decay.

(4) multi-element compounds solar cell

Multi-element compounds solar cell refers to not to be the solar cell made from single-element semi-conducting material.What various countries were studied now is various in style, and great majority are suitability for industrialized production not yet, mainly contains following several:

A) cadmium sulfide solar cell

B) gallium arsenide solar cell

C) copper indium diselenide solar cell (new multicomponent band gap gradient Cu (In, Ga) Se₂thin-film solar cells)

Cu (In, Ga) Se₂be a kind of function admirable sunlight absorbing material, there is the polynary semi-conducting material in graded band-gap gap (energy level difference between conduction band and valence band), can expand solar absorption spectral region, and then improve electricity conversion.Take it, as basis, can design photoelectric conversion efficiency than the thin-film solar cells of the obvious raising of silicon film solar batteries.The optoelectronic transformation efficiency that can reach is 18%, and, this based thin film solar cell up to the present, find no light radiation and cause performance degradation effect (SWE), its electricity conversion improves approximately 50～75% than commercial at present thin-film solar cell panel, belongs to the electricity conversion of the highest level in the world in thin-film solar cells.

From the structure of cell piece, solar cell can be divided into block solar cell and thin-film solar cells.

Introduce the structure of a kind of conventional bulk (being generally crystalline silicon) solar cell below.

In Fig. 1 a, schematically shown a kind of typical blocksolar module 100, it mainly comprisescell panel 10,border component 30 andterminal box 50.

Cell panel 10 is generally the form of laminate, is arranging the array of solar battery sheet (solarcell) 1 in it.Conventionally, multiple solar battery sheets need to be together in series and form solar battery sheet group (string) 2, more multiple such solarbattery sheet groups 2 are together in series by busbar, so that required cell output voltage to be provided.The lead-out wire of these solarbattery sheet groups 2 is connected interminal box 50.

Terminal box 50 is arranged oncell panel 10 back sides conventionally, for example bonding by silica gel.Be appreciated that in Fig. 1 a in order to showterminal box 50, in its region, do not show distribution solar battery sheet 1, but in fact solar battery sheet 1 be almost distributed in the whole region of cell panel 10.Terminal box 50 has anode and cathode terminals, andoutput cable 70 is connecting anode and cathode terminals.Between anode and cathode terminals, be provided with connection line, in this connection line, in the mode of series connection, be provided with switching mode diode, to prevent occurring reverse current in connection line.The quantity of diode is corresponding to the quantity of solar battery sheet group 2.The lead-out wire of each solarbattery sheet group 2 is connected to respectively the two ends of respective diode.

For the thin-film solar cells shown in Fig. 1 b, conventionally use the terminal box that contains a diode, two lead-out wires of cell panel are connected to the both sides of this diode in terminal box.

Border component 30 surrounds the periphery ofcell panel 10, so that protection cell panel.Consider the impact of the weather conditions such as solar radiation, wind and rain, border component is made by aluminium alloy conventionally.For example, as shown in Figure 1a, border component is assembled by aluminium alloy extruded profile sections and angle joint.

In Fig. 1 b, schematically shown a kind of typical film solar battery module 200, it also mainly comprisescell panel 10,border component 30 and terminal box 50.This cell panel mainly consists of single thin film solar cell sheet, and this cell piece is connectingterminal box 50 by busbar 6.Terminal box 50 is arranged on the cell panel backside.Output cable 70 is drawn byterminal box 50.

In above-described prior art, the problem existing about terminal box aspect is that the generating efficiency of solar module reduces with the rising of temperature.During terminal box work, temperature is very high, affects the heat radiation of facies posterior hepatis owing to being attached to assembly backboard simultaneously, can bring the temperature of assembly part to raise, thereby affects the overall delivery efficiency of assembly, reduces the Long Service Life of assembly simultaneously.

In addition, in actual applications, conventionally have multiplesolar modules 100 be arranged in sunlight collecting surface for example on roof to form solar cell system, between multiplesolar modules 100, by cable between terminal box, connected and/or in parallel.Because terminal box is arranged in the back side of cell panel, therefore the installation process of the protection of the connection between them, cable and fixing and even whole solar cell system bothers and is consuming time very much.Meanwhile, utilize cable to connect and the protection of cable and the fixing cost that also can increase solar cell system.

Therefore, wish solar module, especially its terminal box to improve, to solve the above-mentioned problems in the prior art.

Summary of the invention

The application aims to provide a kind of improved solar module terminal box, to avoid terminal box to bring assembly local temperature rise to affect the delivery efficiency of assembly and to reduce the Long Service Life of assembly; In addition, terminal box is easily assembled on cell panel, and can realize electrical connection in mode easily and cheaply between the terminal box of multiple solar modules.

According to the application aspect, a kind of terminal box for solar module is provided, described solar module has cell panel and surrounds the border component of cell panel periphery, described terminal box is configured to be suitable for forming at least a portion of the frame section in described border component and extending longitudinally, and described terminal box has first end and the second end on longitudinally and comprises described:

Body, it is made by insulating material, and comprises clamping part and holding part, and described clamping part is configured to be suitable for clamping the edge of cell panel;

Wiring circuit board, it is placed in described holding part, and described Wiring circuit board has connection line, is provided with at least one switching mode diode in described connection line;

The public cable that connects, its inner is electrically connected and follows one end of described connection line, and outer end is with the plug that is positioned at described first end place or outside; And

Female cable that connects, its inner is electrically connected and follows the other end of described connection line, and outer end is with the socket that is positioned at described the second end place or outside.

According to the application preferred implementation, described diode is that series connection is placed in the multiple diodes in described connection line, described connection line has the plug-in type wire connecting portion being arranged between adjacent diode, and described plug-in type wire connecting portion is configured to be suitable for inserted and the lead-out wire of insertion is clamped by the lead-out wire of cell panel.

According to the application preferred implementation, at least one in the two ends of described connection line is provided with plug-in type wire connecting portion, and described plug-in type wire connecting portion is configured to be suitable for connected wire insertion and inner or the inner of insertion is connected to conductor clamping by inner or the inner of accordingly male connection cable or mother's connection cable.

According to the application preferred implementation, described terminal box is constructed to common type terminal box, and it is assembled between two adjacent cell plates that dock each other.

According to the application preferred implementation, described terminal box itself is arranged on any position of frame section, or terminal box is constructed to the connected angle joint of adjacent frame section at an angle to each other.

According to the application preferred implementation, described terminal box also comprises the grafting piece at least one longitudinal end that is positioned at described body, described grafting piece is suitable for being plugged in shape of peripheral frame section, thereby described terminal box forms described frame section together with described profile sections, corresponding male connection cable or female outer end that connects cable extend to the corresponding outer end of this frame section.

According to the application preferred implementation, described grafting piece is made by identical insulating material with described body; Described grafting piece and described body form one, or described grafting piece and described body are formed separately from each other, then fit together.

According to the application preferred implementation, described insulating material is plastics or pottery.

According to the application preferred implementation, described body longitudinally has constant outer contour shape, and described clamping part and described holding part form as one or be assembled on described holding part.

According to the application preferred implementation, for the terminal box that is applicable to single battery plate, described holding part has roof, front and back sidewall, longitudinal end walls and diapire, and described roof is suitable for the edge butt with cell panel; Between described roof and diapire, be formed with the accommodation space that is holding described Wiring circuit board, described accommodation space has unlimited operation aperture, and described operation aperture is formed at least one in described front and back sidewall and diapire; Described terminal box also comprises connector cover, and described connector cover seals described operation aperture in detachable mode.Preferably, described clamping part comprises the cross wall extending perpendicular to described upstanding wall from the upwardly extending upstanding wall of roof of described holding part with from the upper limb of described upstanding wall, described cross wall is faced mutually with the roof of described holding part and is parallel, limits the cell panel slot being suitable for by the insertion of the edge of cell panel between the roof of described holding part and the cross wall of described clamping part.Preferably, the roof of described holding part offers and is suitable for the perforation of being passed by the lead-out wire of cell panel.

According to the application preferred implementation, for the common type terminal box that is applicable to single battery plate, described body longitudinally has constant outer contour shape, and described clamping part and described holding part form as one or be assembled on described holding part.Preferably, described holding part has roof, front and back sidewall, longitudinal end walls and diapire, and described roof is suitable for the edge butt with cell panel; Between described roof and diapire, be formed with the accommodation space that is holding described Wiring circuit board, described accommodation space has unlimited operation aperture, and described operation aperture is formed at least one in described front and back sidewall and diapire; Described terminal box also comprises connector cover, and described connector cover seals described operation aperture in detachable mode.Preferably, described clamping part comprises the cross wall extending towards the two opposite sides of described upstanding wall perpendicular to described upstanding wall from the upwardly extending upstanding wall of longitudinal centre line of the roof of described holding part with from the upper limb of described upstanding wall, these two cross walls are faced mutually with the roof of described holding part and are parallel, limit two and be suitable for the cell panel slot being inserted by the edge of described two the adjacent cell plates that dock each other respectively between two cross walls of the roof of described holding part and described clamping part.Preferably, the roof of described holding part offers and is suitable for respectively by two perforation that the lead-out wire of the adjacent cell plate of docking passes each other.

According to the application preferred implementation, terminal box also comprises additional connection cable, and one end of this connection cable is with plug adjacent with described socket and that mate, and the other end is with socket adjacent with described plug and that mate.

According to another aspect of the application, a kind of border component for solar module is provided, wherein, the frame section in described border component or at least a portion of angle joint are formed by previously described terminal box.

According to another aspect of the application, a kind of solar module is provided, it comprises:

Cell panel, it has at least one solar battery sheet;

Border component, it surrounds the periphery of described cell panel; And

Previously described terminal box, it forms frame section in described border component or at least a portion of angle joint;

The lead-out wire of described cell panel is connected in described terminal box.

According to the application preferred implementation, described cell panel is polygon or circular.

According to the application preferred implementation, described border component is made by aluminium alloy or plastics.

According to the application preferred implementation, described border component is by the frame section of multiple profile form, angle joint connected adjacent frame section at an angle to each other and the grafting of described terminal box is assembled.Or whole border component is integrated injection molding.

According to the application preferred implementation, described solar battery sheet is crystal silicon solar cell sheet or thin film solar cell sheet.

According to the application preferred implementation, in described cell panel, arranging multiple solar battery sheets, and these solar battery sheets form the multiple solar battery sheet groups that are one another in series by busbar in cell panel, and each solar battery sheet group comprises some solar battery sheets of series connection.

While being rectangle at described cell panel, described terminal box can form at least a portion of minor face or the long limit frame section of this rectangular panel.

According to terminal box and corresponding solar module for the solar module of the application's innovation, terminal box is integrated in a frame section by the method such as such as injection-moulding plastic, rather than below the cell panel back side is located immediately at solar battery sheet, therefore, terminal box can not brought assembly local temperature rise, thereby can therefore not affect the delivery efficiency of assembly and reduce the Long Service Life of assembly.

In addition, in the installation process of solar cell system, between each solar module, can realize electrical connection by the simple grafting between connector, and not need to use the fixing and protection of any extra cable and cable.This makes the installation process can be with easy, fast, mode completes cheaply.

Accompanying drawing explanation

The application's preferred implementation is described below with reference to accompanying drawings, in the accompanying drawings:

Fig. 1 a is a kind of according to the schematic diagram of the solar module of prior art.

Fig. 1 b is another kind of according to the schematic diagram of the solar module of prior art.

Fig. 2 a is according to the schematic diagram of a kind of solar module of the application's preferred implementation, and wherein terminal box forms one whole section of frame.

Fig. 2 b is according to the schematic diagram of a kind of solar module of the application's preferred implementation, and wherein terminal box forms the part in one section of frame.

Fig. 2 c is according to the schematic diagram of the another kind of solar module of the application's preferred implementation, and wherein terminal box forms one whole section of frame.

Fig. 3 a is according to the perspective schematic view of a kind of shape of peripheral frame section of the application's preferred implementation.

Fig. 3 b, 3c are according to the perspective schematic view of doing from both direction of a kind of frame angle joint of the application's preferred implementation.

Fig. 4 a is according to the perspective schematic view of a kind of terminal box of the application's preferred implementation.

Fig. 4 b explains according to the schematic, exploded perspective view of compound mode between the terminal box of the application's preferred implementation and corresponding edge frame section section.

Fig. 4 c be according to the terminal box of a kind of angle joint form of the application's preferred implementation perspective schematic view.

Fig. 4 d is the terminal box of the angle joint form shown in Fig. 4 c and other rim member schematic diagram while being combined to form border component.

Fig. 5 explains according to the perspective schematic view of the connected mode of the connection cable in the terminal box of the application's preferred implementation.

Fig. 6 is according to the schematic cross sectional views of the terminal box of the application's preferred implementation.

Fig. 7 is according to the schematic plan of the Wiring circuit board in the terminal box of the application's preferred implementation;

Fig. 8 is according to the schematic elevational view of the Wiring circuit board in the terminal box of the application's preferred implementation;

Fig. 8 a and 8b are respectively the position " a " being represented by dotted lines in Fig. 8, the local enlarged perspective that " b " locates.

Fig. 9 is according to the schematic diagram of the connection cable in the terminal box of the application's preferred implementation.

Fig. 9 a and 9b are respectively the detail view of the optional form of the connection cable in Fig. 9.

Figure 10-12 are respectively according to the perspective schematic view of the body of the terminal box of the application's preferred implementation, end view and front view.

Figure 13 is according to the schematic plan of the lid of the terminal box of the application's preferred implementation.

Figure 14 is according to the perspective schematic view of the lid of the terminal box of the application's preferred implementation.

Figure 15 is according to the schematic diagram of a pair of solar panel with common type terminal box of another preferred implementation of the application.

Figure 16 is according to the schematic side elevation of the body of the common type terminal box of the application's preferred implementation.

Figure 17 explains according to the schematic, exploded perspective view of compound mode between the common type terminal box of the application's preferred implementation and corresponding edge frame section section.

Figure 18 explains the schematic diagram to the process of installing on cell panel according to the terminal box of the application's preferred implementation.

Embodiment

The application's various preferred implementations are described with reference to the accompanying drawings.

First it may be noted that the application had both been applicable to block solar cell (as crystal silicon solar energy battery), was also applicable to thin-film solar cells.But for the convenient basic principle of explaining the application, the embodiment showing in accompanying drawing is mainly crystal silicon solar energy battery.But obviously,, the various features relevant to crystal silicon solar energy battery in the application, are equally applicable to other block solar cell or thin-film solar cells.

As shown in Fig. 2 a, 2b, according to the application preferred implementation, a kind of solar module 100 (as crystal silicon solar energy battery module) mainly comprisescell panel 10,border component 30 andterminal box 50.

The form thatcell panel 10 is laminate, is arranging solar battery sheet 1 (as crystal-silicon battery slice) in it.Described solar battery sheet can be made by any material with photoelectric conversion, and for example, in the application's a example, described solar battery sheet is to be made by crystal silicon chip (comprising monocrystalline silicon and polysilicon chip).Wherein, multiple solar battery sheets are together in series and are formed solarbattery sheet group 2 by bus 4, then bybusbar 6, multiple such solarbattery sheet groups 2 are together in series, so that required cell output voltage to be provided.Particularly, the initiating terminal of the end of previous solarbattery sheet group 2 and an adjacent rear solarbattery sheet group 2 is connected on a busbar 6.Like this, all solar battery sheet is all together in series and forms complete solar cell chip arrays incell panel 10, and the lead-out wire of cell panel is connected in terminal box 50.These lead-out wires comprise initiating terminal lead-out wire 8a, the lead-out wire 8b of eachbusbar 6, the end lead-out wire 8c of last solarbattery sheet group 2 of first solarbattery sheet group 2.

As shown in Figure 2 c, according to another preferred implementation of the application, a kind of solar module 200 (as film solar battery module) mainly comprisescell panel 10,border component 30 and terminal box 50.Cell panel 10 mainly consists of thin filmsolar cell sheet 10, andcell piece 10 is connected toterminal box 50 by two busbars 6 (lead-out wire), and contact is positioned at the both sides of singleswitching mode diode 54.

Border component 30 surrounds the periphery ofcell panel 10, so that protection cell panel.Border component can be segmented (spliced), can be also integral type.

According to the application's preferred implementation,border component 30 can be made by aluminium alloy.For example, as shown in Fig. 2 a, 2b, 2c,border component 30 is assembled by aluminium alloy extrudedprofile sections 32 and the angle joint 34 that is inserted on the hollow parts ofprofile sections 32.

According to the application's preferred implementation,border component 30 also can be made of plastics.For example, border component comprises the extrudedplastic profile section 32 and the angle joint 34 that are similar to shown in Fig. 2 a, 2b, 2c.Orborder component 30 is integral type parts of being made by injection-moulding plastic.

According to the schematic diagram of theprofile sections 32 of a kind of preferred implementation of the application, see Fig. 3 a.According to the schematic diagram of the angle joint 34 of a kind of preferred implementation of the application, see Fig. 3 b, 3c.

According to the application's preferred implementation,terminal box 50 forms a section of frame.According to the difformity of cell panel, difform terminal box can form the different piece in border component.For example, for circular cell panel, terminal box can form an arc-shaped frame section in circular frame.For polygonal cell panel, terminal box can form one section of straight line frame section.

For example, the in the situation that of rectangular panel, as shown in Fig. 2 a, 2c,terminal box 50 can be configured to along of a cell panel minor face or long limit the complete frame section at this edge place.

Or as shown in Figure 2 b,terminal box 50 is configured to a part for the frame section at this edge place along minor face of cell panel or long limit, and combined and form complete frame section with shape of peripheral frame section 32 '.

Be appreciated that,terminal box 50 shown in Fig. 2 c also can adopt the structure shown in Fig. 2 b, a part for to beterminal box 50 be configured to along a minor face of cell panel or the long limit frame section at this edge place, and combined and form complete frame section with shape of peripheral frame section.

Terminal box 50 is configured to longitudinally (being parallel to the neighboring edge of cell panel) extension, and like this, terminal box has first end and the second end in the vertical.

As shown in Fig. 4 a, and referring to Figure 10,terminal box 50 comprises thebody 12 of being made by insulating material, and this body comprises the clampingpart 14 and the holdingpart 16 that are assembled with each other or form asone.Clamping part 14 is configured to be suitable for clamping the edge of cellpanel.Holding part 16 is configured to have accommodation space 18.

Terminal box 50 also comprisesWiring circuit board 20, and it is placed in described accommodation space 18, andWiring circuit board 20 has connection line.Other CONSTRUCTED SPECIFICATION ofWiring circuit board 20 will be described below.

Terminal box 50 also comprisesmale connection cable 22 andfemale cable 24 that is connected.Public the inner that connectscable 22 is electrically connected and follows one end of described connection line, and outer end is with theplug 22a that is positioned at described first end place.Female the inner that connectscable 24 is electrically connected and follows the other end of described connection line, and outer end is with thesocket 24a that is positioned at described the second end place.

Preferably, describedplug 22a and thesocket 24a type that matches each other.Like this, when two samesolar modules 100 adjacent one another are while arranging, theplug 22a (orsocket 24a) of asolar module 100 can link together by simple grafting with thesocket 24a of another solar module 100 (or plug 22a), thereby can arrange quickly and easily multiplesolar modules 100, to form solar cell system.If only there is asolar module 100 to be used, can utilize plug 22a withsocket 24a, this solar module to be connected with power consumption equipment.

Be appreciated that with the angle joint being connected with the frame section of terminal box, need to be provided formale connection cable 22 or the mother of terminal box to connect the duct thatcable 24 is drawn.

In the execution mode shown in Fig. 4 a, described holdingpart 16 hasroof 16a and diapire 16b.Describedroof 16a is suitable for the edge butt with cell panel 10.Described holdingpart 16 also has front and back sidewall and the longitudinal end walls between roof and diapire.Described accommodation space 18 is formed between roof, front and back sidewall, longitudinal end walls and diapire.Described accommodation space has unlimited operation aperture, and operator can implement to installWiring circuit board 20 by this operation aperture, to operations such as wiring on Wiring circuit board and maintenances.Described operation aperture is formed at least one in described front and back sidewall and diapire.

Describedterminal box 50 also comprisesconnector cover 26, and described connector cover seals described operation aperture in detachable mode.As shown in Figure 13 and 14,connector cover 26 has roughly plate-like body.On the surface of facing mutually with thebody 12 of terminal box, in this plate-like body, set up thelocking pin 26b that sealingstrip 26a (for example silica gel) and multiple (shown in Figure 14 are four, but are not limited to this) are extended perpendicular to this surface.Described lockingpin 26b is suitable for inserting and being locked in the cooperation slot 38 (seeing Figure 12) in thebody 12 of terminal box, thusconnector cover 26 is fixed onbody 12, and sealingstrip 26a forms sealing betweenconnector cover 26 andbody 12.

Certainly, the fixing and sealing means ofconnector cover 26 onbody 12 is not limited to this.Any fixing with sealing means as known in the art can adopt.

For example, can not adopt lockingpin 26b, but adopt other snap device well known in the art, screw-thread type fastening piece etc.

Further preferably, can, before terminal box installs and buckling lid, with casting glue, fill the whole accommodation space of terminal box, then buckle lid.Casting glue is the higher silica gel of thermal conductivity normally, plays the effect of seal protection electric elements, takes into account heat radiation simultaneously.

In the execution mode shown in Fig. 4 a, described clampingpart 14 forms one with holding part 16.But clampingpart 14 can separate formation, be assembled on holdingpart 16 with holdingpart 16.

In the execution mode shown in Fig. 4 a, clampingpart 14 comprises thecross wall 14b substantially extending perpendicular to described upstanding wall from the upwardly extendingupstanding wall 14a ofroof 16a of described holdingpart 16 with from the upper limb of described upstanding wall, describedcross wall 14b faces mutually with theroof 16a of described holding part and is parallel, limits the cell panel slot being suitable for by the insertion of the edge of cell panel between describedroof 16a and describedcross wall 14b.

The shape that is appreciated that clampingpart 14 is not limited to shown in Fig. 4 a, as long as it can form cell panel slot.

At least a portion that forms frame section interminal box 50,terminal box 50 also comprises thegrafting piece 28 at least one longitudinal end that is positioned at body 12.Specifically, in the execution mode of Fig. 4 a, on the each longitudinal end of describedbody 12 with agrafting piece 28; But, can be only on a longitudinal end ofbody 12 with grafting piece 28.In the situation thatterminal box 50 forms one whole section of frame section, onbody 12 without anygrafting piece 28.

In the end wall of graftingpiece 28 and holdingpart 16, be provided with one or more cable throughhole 28a that longitudinally extends to described accommodation space from grafting piece outer end, like this, each described male or female connection cable can extend through the end wall of graftingpiece 28 and holdingpart 16 and be connected withWiring circuit board 20 inner.

As shown in Figure 4 b, described graftingpiece 28 is suitable for being plugged in shape of peripheral frame section 32 ', thereby described terminal box forms a frame section together with described profile sections.Here, profile sections 32 ' can have identical or different structure with previously described profile sections 32.Theplug 22a of correspondingmale connection cable 22 orfemale socket 24a that connectscable 24 extend to the corresponding outer end of this frame section, and one section of the outside, corresponding outer end that preferably extends to this frame section is suitable for the outside distance of pegging graft and operating.

By the every end setting atbody 12 orgrafting piece 28 is not set, and select the longitudinal length ofgrafting piece 28, infact terminal box 50 can be arranged on to any position of frame section.

It will be understood by those in the art that as further execution mode, referring to Fig. 4 c, terminal box even can be configured to the form of angle joint connected adjacent frame section at an angle to each other.As shown in Fig. 4 d, the terminal box of this angle joint form can be combined to form border component with other rim member.

Preferably, described grafting piece is made by identical insulating material with described body.For example, described body and/or described grafting piece are made by insulating material such as plastics or potteries.Further preferably, described grafting piece and described body form one.Certainly, described grafting piece also can separate formation, then fit together with described body.

In previously described execution mode, the output of terminal box is the two ends that plug 22a andsocket 24a are positioned at terminal box place frame section.In further execution mode, referring to Fig. 2 a, 2b,additional connection cable 3 can be set in terminal box 50.Thisconnection cable 3 extends longitudinally through terminal box 50 (and presumable profile sections 32 ' that is positioned at terminal box one or both ends) and two ends and exposes.Connect one end ofcable 3 withplug 3a adjacent with describedsocket 24a and that mate, the other end is withsocket 3b adjacent with describedplug 22a and that mate.Like this, in the time need to carrying out external cabling from one end of terminal box place frame section,socket 24a and plug 3a can be pegged graft, thereby utilizeplug 22a andsocket 3b adjacent and coupling to carry out external cabling; Or plug 22a andsocket 3b are pegged graft, thereby utilizesocket 24a and plug 3a adjacent and coupling to carry out external cabling.

The connected mode of the connection cable in terminal box has been shown in Fig. 5.In the execution mode shown in Fig. 5,male connection cable 22 is connected toWiring circuit board 20 by connectingwire 36 respectively withfemale cable 24 that is connected.Butmale connection cable 22 is connectedcable 24 with mother also can be directly connected toWiring circuit board 20.

As shown in Figure 5, and referring to Fig. 6,12, theroof 16a of described holdingpart 16 offers and is suitable for theperforation 40 of being passed by the lead-out wire of cell panel.

Referring to Figure 11, describedbody 12 longitudinally has constant outer contour shape, and described graftingpiece 28 also longitudinally has constant outer contour shape.

Preferably, as shown in Figure 4 b, the outer contour shape of the profile sections 32 ' coordinating with terminal box is consistent, like this, after the profile sections 32 ' of terminal box and one or both ends is combined, will form the consistent frame section of outline.Particularly, profile sections 32 ' there is the clamping part 14 ' consistent with clampingpart 14 outlines of terminal box body and with terminal box in the consistent cylindrical part 16 ' of holdingpart 16 outlines.Cylindrical part 16 ' is hollow, the shape complementarity of the hollow inside of the profile ofgrafting piece 28 and cylindrical part 16 ', and thepiece 28 of pegging graft thus closely cooperates with inner formation of hollow ofcylindrical part 16 '.On the inner surface of the hollow inside of the outer surface of graftingpiece 28 and/or cylindrical part 16 ', can be formed with guiding and/or locking and/or fastening structure, with thepiece 28 that contributes to peg graft to the insertion in cylindrical part 16 ' and fixing.

The structure and/or the outline that it may be noted that other frame section in border component can be identical or different with the frame section with wire frame.

The distribution mode of all parts in terminal box has been shown in Fig. 6.Wherein, by being screwed intoscrew 44 in the screwed hole 42 (seeing Figure 12) in holdingpart 16 or such as buckle structure of other fastening means etc.,Wiring circuit board 20 is fixed in holdingpart 16.

Male connection cable 22 and female schematic diagram that is connectedcable 24 have been shown in Fig. 9.

Fig. 9 a withmale connection cable 22 and female feasible configurations that is connectedcable 24 have been shown in 9b.Be appreciated thatmale connection cable 22 is not limited to this with female concrete structure or type that is connectedcable 24.

In Fig. 7,8, illustrated according to the structure of theWiring circuit board 20 of a preferred implementation.

Wiring circuit board 20 comprisessubstrate 46, is formed with at least twoconduction regions 48 onsubstrate 46, on eachconduction region 48, is fixed wtih plug-in typewire connecting portion 52, and switchingmode diode 54 is arranged between adjacentconductive district 48 electrically isolated from one.The arrangement ofdiode 54 is as shown in Fig. 2 a, 2b, 2c.Like this, onsubstrate 46, formed the connection line that the plug-in typewire connecting portion 52 that is together in series byconduction region 48 anddiode 54 form.

Wiring circuit board 20 can be printed circuit board (PCB) (PCB), and in this case,substrate 46 is PCB substrate.But Wiringcircuit board 20 also can have any alternate manner to form, as long as can connection line is fixed thereon.For example,substrate 46 can be the strip piece that for example plastics of insulating material are made, and has groove or similar structures on it, so that plug-in typewire connecting portion 52 anddiode 54 are fixed thereon.

The lead-out wire of solar battery sheet 1 or solarbattery sheet group 2 can be introduced in the accommodation space of holding part through theperforation 40 in theroof 16a of holdingpart 16, is then inserted in plug-in typewire connecting portion 52.

In illustrated preferred implementation, plug-in typewire connecting portion 52 is reed type, comprises theconductive soleplate 56 being fixed onconduction region 48 and theopposed reed 58 being stretched out by conductive soleplate 56.Very close to each other or only have a very little gap between reed 58.Like this, after the lead-out wire of solar battery sheet 1 or solarbattery sheet group 2 inserts betweenreed 58, betweenopposed reed 58, by elasticity, strutted and therefore clamp lead-out wire end.

The pin ofdiode 54 can be fixed onconduction region 48 by weldinghole 68, thereby realizes the electrical connection between plug-in typewire connecting portion 52 and diode 54.But other electric connection mode well known in the art is also feasible.

The plug-in typewire connecting portion 52 that is positioned at connection line two ends with its one or the transverse splicing formulawire connecting portion 62 that fits together with it, for being connectedcable 22 and femalely connecting theconnection wire 36 thatcable 24 connecting respectively and inserted with male.This transverse splicing formulawire connecting portion 62 has and the vertical conductive soleplate being connected 64 ofconductive soleplate 56 and theopposed reed 66 that stretched out by conductive soleplate 64.The structure ofopposed reed 66 and performance are similar toopposed reed 58.

By adopting thewire connecting portion 52 and 62 of reed type, the connection wire that the lead-out wire of solar battery sheet 1 or solarbattery sheet group 2 and male and female connect cable can easily be electrically connected to wire connectingportion 52 and 62 by pegging graft, and can easily pull out when needed.This has greatly simplified the installation and maintenance operation of terminal box.

Next another preferred implementation of the application is described with reference to Figure 15.

As shown in figure 15, terminal box can be constructed to commontype terminal box 50 ', and it is assembled between twoadjacent cell plates 10 that dock each other.

In this commontype terminal box 50 ',body 12 comprises the clampingpart 14 and the holdingpart 16 that are assembled with each other or form asone.Clamping part 14 is configured to be suitable for the edge at two cell panels of its sandwich.

Described holdingpart 16 hasroof 16a anddiapire 16b, and describedroof 16a is suitable for the edge butt with two cell panels.Between describedroof 16a anddiapire 16b, be formed with public accommodation space, for holding publicWiring circuit board 20,male connection cable 22 andfemale cable 24 etc. that is connected.

Described clampingpart 14 comprises thecross wall 14b extending towards the two opposite sides of described upstanding wall perpendicular to described upstanding wall from the upwardly extending publicupstanding wall 14a of longitudinal centre line of theroof 16a of described holdingpart 16 with from the upper limb of described publicupstanding wall 14a, these twocross wall 14b face mutually with theroof 16a of described holding part and are parallel, limit two and be suitable for the cell panel slot being inserted by the edge of described two the adjacent cell plates that dock each other respectively between twocross wall 14b of theroof 16a of described holding part and described clamping part.

Other architectural feature of this commontype terminal box 50 ' and previously describedterminal box 50 for single cell panel are similar, are therefore not described in detail.

As shown in figure 17, theprofile sections 32 coordinating with commontype terminal box 50 ' " outer contour shape consistent, like this, theprofile sections 32 in commontype terminal box 50 ' with one or both ends " combine after, will form the consistent frame section of outline.

The schematic diagram to the installation process on cell panel according to the application's terminal box has been shown in Figure 18.

The back side ofcell piece 10 has been shown in Figure 18.

Firstterminal box 50 is combined with profile sections 32 ' and is formed the frame section of cell piece, then the edge ofcell panel 10 is inserted in the frame section combining, and completes the wiring between cell panel and terminal box.

Then, sealingstrip 26a (for example silica gel) is applied on terminal box body round the operation aperture on terminal box body, thenconnector cover 26 is assembled on terminal box body.Like this, just completed terminal box to the installation on cell panel.

Body and the grafting piece of described frame section, described angle joint, described terminal box all can be made of plastics, for example, by injection moulding, extrusion molding etc.Their material can be identical or different, and at least one in can selecting below a group: PET (PETG), PBT (polybutylene terephthalate), PTT (PTT), PA6 (polycaprolactam), PA66 (polyamide 66), PA46 (polyamide 46), PAR (Nomex), PC (Merlon), ABS (acrylonitrile/butadiene/styrene copolymer), PU (polyurethane), PPO (polyphenylene oxide), LCP (polymeric liquid crystal copolymer), PEI (Polyetherimide), PVC (polyvinyl chloride), or its blend etc.

According to the application, the terminal box of solar module can be integrated in one section of frame, rather than below the cell panel back side is located immediately at solar battery sheet, therefore, terminal box can not brought assembly local temperature rise, affects the delivery efficiency of assembly and reduces the Long Service Life of assembly.

In addition,, in the installation process of solar cell system, between adjacent solar battery module, can realize electrical connection by the simple grafting between their Male/female connector, and not need to use any extra cable.This makes the installation process can be with easy, fast, mode completes cheaply.In addition, the detection of solar module and maintenance also easily realize.

Although show and described the application for preferred implementation above, it will be understood by those skilled in the art that under the prerequisite of the application's scope limiting in not departing from claims, can make a variety of changes and revise.

Claims (25)

1. the terminal box for solar module, described solar module has cell panel and surrounds the border component of cell panel periphery, and described terminal box is configured to be suitable for forming at least a portion of frame section in described border component or angle joint and extends longitudinally; Described terminal box has first end and the second end described on longitudinally, and comprises:

Body, it is made by insulating material, and comprises clamping part and holding part, and described clamping part is configured to be suitable for clamping the edge of cell panel;

Wiring circuit board, it is placed in described holding part, and described Wiring circuit board has connection line, is provided with at least one switching mode diode in described connection line;

The public cable that connects, its inner is electrically connected and follows one end of described connection line, and outer end is with the plug that is positioned at described first end place or outside;

Female cable that connects, its inner is electrically connected and follows the other end of described connection line, and outer end is with the socket that is positioned at described the second end place or outside; And

Be positioned at the grafting piece at least one longitudinal end of described body, described grafting piece is suitable for being plugged in shape of peripheral frame section, thereby described terminal box forms frame section together with described profile sections, corresponding male connection cable or female outer end that connects cable extend to the corresponding outer end of this frame section.

2. terminal box according to claim 1, wherein, described diode is that series connection is placed in the multiple diodes in described connection line, described connection line has the plug-in type wire connecting portion being arranged between adjacent diode, and described plug-in type wire connecting portion is configured to be suitable for inserted and the lead-out wire of insertion is clamped by the lead-out wire of cell panel.

3. terminal box according to claim 2, wherein, at least one in the two ends of described connection line is provided with plug-in type wire connecting portion, and described plug-in type wire connecting portion is configured to be suitable for connected wire insertion and inner or the inner of insertion is connected to conductor clamping by inner or the inner of accordingly male connection cable or mother's connection cable.

4. terminal box according to claim 1, wherein, described terminal box is constructed to common type terminal box, and it is assembled between two adjacent cell plates that dock each other.

5. according to the terminal box described in any one in claim 1 to 4, wherein, described terminal box itself is arranged on any position of frame section, or terminal box is constructed to the connected angle joint of adjacent frame section at an angle to each other.

6. terminal box according to claim 1, wherein, described grafting piece is made by identical insulating material with described body;

Described grafting piece and described body form one, or described grafting piece and described body are formed separately from each other, then fit together.

7. terminal box according to claim 6, wherein, described insulating material is plastics or pottery.

8. according to the terminal box described in any one in claims 1 to 3, wherein, described body longitudinally has constant outer contour shape, and described clamping part and described holding part form as one or be assembled on described holding part.

9. terminal box according to claim 8, wherein, described holding part has roof, front and back sidewall, longitudinal end walls and diapire, and described roof is suitable for the edge butt with cell panel; Between described roof and diapire, be formed with the accommodation space that is holding described Wiring circuit board, described accommodation space has unlimited operation aperture, and described operation aperture is formed at least one in described front and back sidewall and diapire; Described terminal box also comprises connector cover, and described connector cover seals described operation aperture in detachable mode.

10. terminal box according to claim 9, wherein, described clamping part comprises the cross wall extending perpendicular to described upstanding wall from the upwardly extending upstanding wall of roof of described holding part with from the upper limb of described upstanding wall, described cross wall is faced mutually with the roof of described holding part and is parallel, limits the cell panel slot being suitable for by the insertion of the edge of cell panel between the roof of described holding part and the cross wall of described clamping part.

11. terminal boxes according to claim 9, wherein, the roof of described holding part offers and is suitable for the perforation of being passed by the lead-out wire of cell panel.

12. terminal boxes according to claim 4, wherein, described body longitudinally has constant outer contour shape, and described clamping part and described holding part form as one or are assembled on described holding part.

13. terminal boxes according to claim 12, wherein, described holding part has roof, front and back sidewall, longitudinal end walls and diapire, and described roof is suitable for the edge butt with cell panel; Between described roof and diapire, be formed with the accommodation space that is holding described Wiring circuit board, described accommodation space has unlimited operation aperture, and described operation aperture is formed at least one in described front and back sidewall and diapire; Described terminal box also comprises connector cover, and described connector cover seals described operation aperture in detachable mode.

14. terminal boxes according to claim 13, wherein, described clamping part comprises the cross wall extending towards the two opposite sides of described upstanding wall perpendicular to described upstanding wall from the upwardly extending upstanding wall of longitudinal centre line of the roof of described holding part with from the upper limb of described upstanding wall, these two cross walls are faced mutually with the roof of described holding part and are parallel, limit two and be suitable for the cell panel slot being inserted by the edge of described two the adjacent cell plates that dock each other respectively between two cross walls of the roof of described holding part and described clamping part.

15. terminal boxes according to claim 12, wherein, the roof of described holding part offers and is suitable for respectively by two perforation that the lead-out wire of the adjacent cell plate of docking passes each other.

16. according to the terminal box described in any one in claim 1 to 4, also comprises additional connection cable, and one end of this connection cable is with plug adjacent with described socket and that mate, and the other end is with socket adjacent with described plug and that mate.

17. 1 kinds of border components for solar module, wherein, the frame section in described border component or at least a portion of angle joint are by forming according to the terminal box described in any one in claim 1 to 16.

18. 1 kinds of solar modules, comprising:

Cell panel, it has at least one solar battery sheet;

Border component, it surrounds the periphery of described cell panel; And

According to the terminal box described in any one in claim 1 to 16, it forms frame section in described border component or at least a portion of angle joint;

The lead-out wire of described cell panel is connected in described terminal box.

19. solar modules according to claim 18, wherein, described cell panel is polygon or circular.

20. solar modules according to claim 18, wherein, described border component is made by aluminium alloy or plastics.

21. according to claim 18 to the solar module described in any one in 20, and wherein, described border component is by the frame section of multiple profile form, angle joint connected adjacent frame section at an angle to each other and described terminal box are pegged graft and assembled; Or

Whole border component is integrated injection molding.

22. according to claim 18 to the solar module described in any one in 20, and wherein, described solar battery sheet is crystal silicon solar cell sheet.

23. solar modules according to claim 22, wherein, in described cell panel, arranging multiple solar battery sheets, and these solar battery sheets form the multiple solar battery sheet groups that are one another in series by busbar in cell panel, and each solar battery sheet group comprises some solar battery sheets of series connection.

24. according to claim 18 to the solar module described in any one in 20, and wherein, described solar battery sheet is thin film solar cell sheet.

25. according to claim 18 to the solar module described in any one in 20, and wherein, described cell panel is rectangle, and described terminal box forms at least a portion of minor face or the long limit frame section of this rectangular panel.

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