WO2011139648A2 - Boîte de jonction, composant cadre et module de cellule solaire - Google Patents

Boîte de jonction, composant cadre et module de cellule solaire Download PDF

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Publication number
WO2011139648A2
WO2011139648A2 PCT/US2011/033840 US2011033840W WO2011139648A2 WO 2011139648 A2 WO2011139648 A2 WO 2011139648A2 US 2011033840 W US2011033840 W US 2011033840W WO 2011139648 A2 WO2011139648 A2 WO 2011139648A2
Authority
WO
WIPO (PCT)
Prior art keywords
junction box
solar cell
frame
cell panel
containment
Prior art date
Application number
PCT/US2011/033840
Other languages
English (en)
Other versions
WO2011139648A3 (fr
Inventor
Stan Shi
Original Assignee
E. I. Du Pont De Nemours And Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201010162977.5A external-priority patent/CN102237413B/zh
Priority claimed from CN201010162992.XA external-priority patent/CN102237423B/zh
Application filed by E. I. Du Pont De Nemours And Company filed Critical E. I. Du Pont De Nemours And Company
Priority to JP2013508137A priority Critical patent/JP2013526064A/ja
Priority to DE212011100086U priority patent/DE212011100086U1/de
Priority to DE112011101537T priority patent/DE112011101537T5/de
Publication of WO2011139648A2 publication Critical patent/WO2011139648A2/fr
Publication of WO2011139648A3 publication Critical patent/WO2011139648A3/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/02002—Arrangements for conducting electric current to or from the device in operations
    • H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
    • H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
    • H01L31/02013—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules comprising output lead wires elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/081—Bases, casings or covers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S30/00—Structural details of PV modules other than those related to light conversion
    • H02S30/10—Frame structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present application relates to a junction box used in a solar cell module, a frame for a solar cell module, and the solar cell module comprising the junction box.
  • monocrystalline silicon solar cell which has the highest photoelectric conversion efficiency of all types of solar cells, at about 15% and up to at most 24%, but also having one of the highest production costs, which prevent large scale use. Packed generally with toughened glass and waterproof resin, monocystalline silicon is firm, durable, and has a service life of about 15 years and up to 25 years.
  • amorphous silicon solar cell which is a thin- film solar cell, appearing in 1976, and having a different production process from (1) and (2) in that the process is greatly simplified and consumes little silicon material and less electricity. Although this type of solar cell can generate electricity from dim sunlight, its photoelectric conversion efficiency is only about 10%, is unstable, and declines with time.
  • multiple compound solar cell which need not be manufactured from one kind, but of a combined, semiconductor material. Multiple compound solar cells include:
  • Cu(In,Ga)Se 2 thin-film solar cell possesses a multiple semiconductor material having a graded band gap, which is the energy difference between conduction band and valence band. Such material is an excellent sunlight absorbing material, and can enlarge the spectrum range of sunlight that is absorbed so as to enhance the photoelectric conversion efficiency.
  • a Cu(In,Ga)Se 2 thin-film solar cell has a photoelectric conversion efficiency up to 18%, which is higher than that of a silicon thin- film solar cell, and no Staebler-Wronski Effect (SWE). Such solar cell therefore have a photoelectric conversion efficiency that is approximately 50-75% higher than the present commercial thin-film solar cell panel and is the highest among all kinds of thin-film solar cells.
  • the structure of solar cells can be categorized as wafer-type (block shaped) or thin-film, solar cells.
  • Fig. la shows a convention, block-shaped solar cell module 100 having cell panel 10, frame 30 and junction box 50.
  • Cell panel 10 is usually formed by laminated plates and arranged with an array of solar cells 1.
  • a plurality of solar cells is often connected in series to form solar cell string 2, and a plurality of such solar cell strings 2 is connected in series by a bus bar to provide needed cell output voltage.
  • the lead lines of solar cell strings 2 are connected to junction box 50.
  • junction box 50 is usually mounted on the back side of cell panel 10, attached by silica gel, for example.
  • Fig. la in order to display junction box 50, no solar cell 1 is shown in the region where the junction box is located, but to be clear, solar cells 1 are disposed nearly throughout the entire region of cell panel 10.
  • Junction box 50 has a positive terminal point and a negative terminal point to which output cables 70 are connected.
  • a connection line is provided between the positive terminal point and the negative terminal point.
  • Switching diodes are connected in series in the connection line to prevent a reverse current in the connection line.
  • the number of switching diodes corresponds to the number of solar cell strings 2.
  • the lead lines of each solar cell string 2 are connected respectively to the two ends of the corresponding diode.
  • Frame 30 surrounds the periphery of cell panel 10 to protect it from sunlight radiation, wind and rain.
  • the frame is typically made of aluminum alloy.
  • the frame is assembled by aluminum alloy extruded profile segments and corner joints.
  • Fig. lb shows a typical, thin- film solar cell module 200 having cell panel 10, frame component 30 and junction box 50.
  • Cell panel 10 is formed chiefly by a single thin- film solar cell which is connected to the junction box 50 by a bus bar 6.
  • Junction box 50 is mounted on the back side of cell panel 10 and typically has one diode. Two lead lines of cell panel 10 are connected to the two sides of the diode within the junction box. Output cables 70 lead out from junction box 50.
  • Prior art junction boxes suffer reduced the power generation efficiency of the solar cell module as the temperature rises.
  • Prior art junction boxes operate with a high temperature and, as attached to the back side of the solar cell module, raise the temperature in that part of the module. Thus, this attachment orientation affects the total output efficiency of the solar cell module and thereby reduces its service life.
  • a plurality of solar cell modules 100 is typically arrayed on a sunlight acquisition surface, such as a rooftop, to form a solar cell system, and the plurality of solar cell modules 100 are connected in series and/or in parallel by the cables from the junction boxes. Since the junction boxes are arranged on the back side of the cell panel, it is troublesome and time-consuming to connect the cables to the junction boxes, to protect and fix the cables, and even to mount the entire solar cell system. At the same time, using cables increases the overall cost of the solar cell system. [0011] Therefore, it is desirable to improve the solar cell module, especially the junction box, so as to solve the existing problems mentioned above.
  • junction boxes used in a solar cell module that comprises a cell panel and a frame that surrounds the periphery of the cell panel.
  • the junction boxes described herein are adapted to be form at least a part of the sections of the frame and extends along the longitudinal direction.
  • These junction boxes have a first end portion and a second end portion in the longitudinal direction and comprise the following:
  • a body made of insulating material and comprising a clamping part and a containment part, the clamping part adapted to clamp the edge of the cell panel;
  • a wiring board mounted in the containment part and having a connection line that is provided with at least one switching diode;
  • connection cable of which the internal end is electrically connected to the other end of the connection line, and of which the external end has a socket located at or outside the second end portion.
  • solar cell modules that comprise:
  • a cell panel having at least one solar cell
  • junction box as previously described for forming at least a part of the frame sections or corner joints of the frame component
  • Fig. la is a prior art, solar cell module. .
  • Fig. lb is a different prior art, solar cell module.
  • Fig. 2a depicts a solar cell module described herein, in which the junction box forms an entire frame section.
  • Fig. 2b depicts a solar cell module described herein, in which the junction box forms only a part of a frame section.
  • Fig. 2c depicts a variation of the solar cell module described herein, in which the junction box forms an entire frame section.
  • Figs. 2a, 2b and 2c together comprise Figure 2.
  • Fig. 3a is a perspective view of a frame profile section of a solar cell module described herein.
  • Fig. 3b and Fig. 3c are perspective views from two directions of a frame corner joint of a solar cell module described herein.
  • Figs. 3a, 3b and 3c together comprise Figure 3.
  • Fig. 4a depicts a junction box described herein.
  • Fig. 4b is an exploded view to illustrate the articulation between a junction box described herein and the corresponding frame profile section.
  • Fig. 4c is a perspective view of a junction box described herein in the form of a corner joint of the frames described herein.
  • Fig. 4d depicts how a junction box described herein and in the form of a corner joint as shown in Fig. 4c combines with other frame sections to form a frame described herein.
  • Fig. 4a, 4b, 4c, and 4d together comprise Figure 4.
  • Fig. 5 depicts the articulation of the connection cable within a junction boxes described herein.
  • Fig. 6 is a cross section view of a junction box described herein.
  • Fig. 7 is a top view of the wiring board in a junction box described herein.
  • Fig. 8a is a front view of the wiring board in a junction box described herein.
  • Fig. 8b and Fig. 8c are magnified perspective views of parts "a" and "b", respectively, shown with dotted lines in Fig.8a.
  • Figs. 8a, 8b, and 8c together comprise Figure 8.
  • Fig. 9a shows connection cables injunction boxes described herein.
  • Fig. 9b and Fig. 9c depict variants of connection cables in these junction boxes.
  • Figs. 9a, 9b, and 9c together comprise Figure 9.
  • Figs. 10-12 are respectively a perspective view, side view and front view of the body of a junction box described herein.
  • Fig. 13 is a top view of the lid of a junction boxes described herein.
  • Fig. 14 is a perspective view of the lid of a junction box described herein.
  • Fig. 15 shows a pair of solar cell panels described herein having a common type junction box described herein.
  • Fig. 16 is a side view of the body of a common type junction box described herein.
  • Fig. 17 is an exploded view to show the articulation between the common type junction box described herein and the corresponding frame profile section. .
  • Fig. 18 shows the process of mounting a junction box described herein onto a cell panel described herein.
  • junction boxes in a solar cell module which prevent a rise in temperature in that part of the module that reduces its output efficiency and service life.
  • the junction boxes described herein can be easily assembled onto the cell panel, and junction boxes of different solar cell modules can be connected easily to establish efficient and low cost electric interconnection.
  • junction boxes are used in a solar cell module that comprises a cell panel and a surrounding frame. These junction boxes are adapted to be form at least a part of the frame and extend along the longitudinal direction. They have a first end portion and a second end portion in the longitudinal direction and comprise: a body made of insulating material and comprising a clamping part and a containment part, the clamping part adapted to clamp the edge of the cell panel;
  • a wiring board mounted in the containment part and having a connection line that is provided with at least one switching diode;
  • connection cable of which the internal end is electrically connected to the other end of the connection line, and of which the external end has a socket located at or outside the second end portion.
  • the at least one switching diode is connected in series and mounted in the connection line that has plug-in connectors disposed between adjacent diodes.
  • the plug- in connectors are configured for insertion of the lead lines from the cell panel and meanwhile clamping the inserted lead lines.
  • At least one of the two ends of the connection line is provided with a plug-in connector that is configured for the insertion of the internal end or internal end connecting wire of the corresponding male connection cable or female connection cable and meanwhile clamping the inserted internal end or internal end connecting wire.
  • junction boxes described herein may be a shared junction box between two adjacent cell panels that contact each other and may be disposed anywhere on the frame section. Preferably, these junction boxes are disposed in corner joints that connect two adjacent sections of the frame that form a shared angle.
  • junction boxes may comprise at least one plug block located at a longitudinal end portion of the body, which is suitable to be inserted into a frame profile segment so that the junction box and the profile segment can form a frame section.
  • the external end of a corresponding male connection cable or female connection cable extends to the corresponding outer end of the frame section.
  • the plug block and the body may be made of the same insulating material, which may be plastic or ceramic, and formed into one piece. Alternatively, the plug block and the body may be formed separately and then assembled together.
  • the body has a constant outer contour shape along the longitudinal direction, and the clamping part can be formed integrally with, or assembled onto, the containment part.
  • the containment part has a top wall, front and back side walls, two longitudinal end walls and a bottom wall.
  • the top wall runs adjacent to the edge of the cell panel, and a space is formed between the top wall and the bottom wall to accommodate the wiring board.
  • the space for the wiring board has an operation opening that is formed on at least one of the front and back side walls and the bottom wall.
  • the junction box further comprises a removable lid that seals the operation opening.
  • the clamping part comprises a vertical wall extending upward from the top wall of the containment part and a horizontal wall extending from the upper edge of the vertical wall, perpendicular to the vertical wall. The horizontal wall faces and is parallel to the top wall of the containment part.
  • a cell panel slot adapted for the insertion of the edge of the cell panel is defined between the top wall of the containment part and the horizontal wall of the clamping part.
  • the top wall of the containment part is provided with openings suitable for the lead lines of the cell panel to pass through.
  • the body has a constant outer contour shape along the longitudinal direction.
  • the clamping part comprises a vertical wall extending upward from the longitudinal centerline of the top wall of the containment part and two horizontal walls extending along two opposite directions from the upper edge of the vertical wall, perpendicular to the vertical wall.
  • the two horizontal walls face and are parallel to the top wall of the containment part.
  • Two cell panel slots adapted for the insertion of the edges of two adjacent cell panels are defined between the top wall of the containment part and the two horizontal walls of the clamping part.
  • the top wall of the containment part is provided with openings adapted for the lead lines of the two adjacent cell panels contacting each other to pass through.
  • the junction box described herein may further comprise an additional connection cable of which one end has a plug adjacent to and matching with the socket, and of which the other end has a socket adjacent to and matching with the plug.
  • the solar cell modules can establish electric interconnection by simply plugging in the connectors, without the use of any additional cables, and consequently without fixation and protection of the cables.
  • the mounting process can be performed simply, quickly and at a low-cost.
  • frames for use in a solar cell module wherein at least a part of the frame sections or corner joints is formed by the junction boxes described herein.
  • the frames described herein may be aluminum alloy or polymeric. These frames may be plugged in and assembled with multiple frame sections in the form of profile segments, with corner joints connecting adjacent frame sections forming an angle with each other and the junction box. Alternatively, the entire frame may be made in one piece formed by injection molding.
  • solar cell panels or modules comprising the junction boxes described herein.
  • the solar cell panels described herein may polygonal or circular.
  • the junction box can be formed as at least a part of the short or long frame sections of the rectangular cell panel.
  • the solar cells used in these solar cell panels may be crystalline silicon or thin- film.
  • a plurality of solar cells may be arranged on these solar cell panels, and connected in series by bus bars to form multiple solar cell strings, each of which strings comprises several solar cells connected in series.
  • junction box, solar cell panels and frames recited in the claims are further described by reference to the drawings.
  • the junction boxes described herein may be used with either a block-shaped solar cell panel, e.g., a crystalline silicon solar cell panel, or a thin-film solar cell panel.
  • a block-shaped solar cell panel e.g., a crystalline silicon solar cell panel
  • a thin-film solar cell panel e.g., a crystalline silicon solar cell panel
  • One of skill in the art would appreciate that the described features of crystalline silicon solar cells correspond to similar features in other wafer-type solar cells or in thin-film solar cells.
  • Figs. 2a and 2b show solar cell module 100 having cell panel 10, frame 30 and junction box 50.
  • Cell panel 10 is formed by laminating plates together and comprises an array of solar cells 1.
  • the solar cells may be made of any material that has photoelectric conversion properties.
  • the solar cell may be made of a mono- or poly- crystalline silicon wafer.
  • the solar cell panel comprises a plurality of such solar cells connected in series by conducting bar 4 to form solar cell string 2, and in turn a plurality of solar cell strings 2 are connected in series by bus bar 6 to provide desired output voltage.
  • the tail terminal of a previous solar cell string 2 and the initiating terminal of a latter solar cell string 2 are connected together on bus bar 6.
  • Element 8a indicates a lead line from the initiating terminal of the leftmost solar cell string 2.
  • Element number 8b indicates lead lines from bus bars 6.
  • Element 8c indicates a lead line 8c from the tail terminal of the rightmost solar cell string 2.
  • Fig. 2c shows solar cell module 200, e.g., a thin-film solar cell module, having cell panel 10, frame component 30, and junction box 50.
  • Cell panel 10 is formed mainly of thin- film solar cell 10, which is connected to junction box 50 by two bus bars 6, which also serve as lead lines.
  • the connection point for bus bars 6 is located on either side of single switching diode 54.
  • frame 30 surrounds the periphery of cell panel 10 and thereby protects it.
  • Frame 30 may be made of profile segments that have shared corners or be one piece.
  • Figs. 2a, 2b, and 2c can be considered to show frame 30 made of aluminum-alloy-extruded segments 32 and 32' and corner joints 34 inserting into the hollow parts of profile segments 32.
  • Figs. 2a, 2b, and 2c may also be considered to show frame 30 as comprising plastic-extruded profile segments 32 and 32', and corner joints 34.
  • junction box 50 is configured to be part of frame 30.
  • junction box 30 may be configured to be a different part of the cell panel based on the specific shapes of the junction box and the cell panel.
  • the junction box can be configured to be an arc frame section of the circular frame.
  • junction box 50 can be configured to be a linear frame section.
  • junction box 50 can be configured to extend along an entire side of frame 30.
  • Fig. 2b shows that junction box 50 forms a part of one side of frame 30 and with profile segments 32 forms one entire side of frame 30.
  • Fig. 2c may also adopt the frame configuration of junction box 50 plus profile segments 32 forming one entire side of frame 50.
  • Junction box 50 may also be configured to extend along the longitudinal direction (parallel with the adjacent edge of the cell panel), allowing the junction box to have both a first end portion and a second end portion in the longitudinal direction.
  • Fig. 3a shows profile segment 32
  • Figs. 3b and 3c show corner joint 34 according to a preferred embodiment of the present application.
  • junction box 50 comprises body 12 typically made of insulating material.
  • Body 12 comprises clamping part 14 and containment part 16.
  • Clamping part 14 and containment part 16 may be assembled from separate pieces or formed as an integral piece. Clamping part 14 is configured to clamp the edge of the cell panel. Containment part 16 is configured to have containment space 18.
  • Junction box 50 further comprises wiring board 20 mounted within containment space 18 and has a connection line. Other details of the structure of wiring board 20 will be described later. [0036] Junction box 50 further comprises male connection cable 22 and female connection cable 24.
  • Male connection cable 22 has an internal end, electrically connected to one end of the connection lines, and an external end having plug 22a.
  • Female connection cable 24 has an internal end electrically connected to the other end of the connection line, and has an external end with socket 24a.
  • plug 22a and socket 24a preferably correspond to each other, so that when two identical solar cell modules 100 are arranged adjacent to each other, plug 22a (or socket 24a) of a solar cell module 100 can be connected to socket 24a (or plug 22a) of the other solar cell module 100 by simply plugging it in, allowing a plurality of solar cell modules 100 to be arranged in a fast and convenient way to form a solar cell panel system.
  • Elements 22a and 24a in Figs. 2a, 2b and 2c together with Fig. 15 show how plugging multiple solar panels together forms a solar cell panel system.
  • its plug 22a and socket 24a can be used to connect the solar cell module with electrical equipment. It can be understood that a channel for leading male connection cable 22 or female connection cable 24 of the junction box should be provided in the corner joint that is connected with the frame section having the junction box.
  • Fig. 4a shows that containment part 16 comprises top wall 16a and bottom wall 16b, wherein top wall 16a is adjacent top the edge of cell panel 10.
  • Containment part 16 further comprises front and back side walls and two longitudinal end walls between the top wall and the bottom wall.
  • Containment space 18 is defined by the top wall, the front and back side walls, the two longitudinal end walls and the bottom wall, and has an opening through which an operator can mount wiring board 20, connect wires to it and service the board as needed. This opening is formed on at least one of the front and back side walls and the bottom wall.
  • junction box 50 further comprises removable junction box lid 26 sealing the operation opening.
  • junction box lid 26 is generally in the form of a plate and has sealing strip 26a on its surface that faces body 12, and a plurality of locking pins 26b extending perpendicular to its surface.
  • Figs. 13 and 14 show four locking pins, any number is contemplated.
  • Locking pins 26b are adapted for insertion and locking into corresponding slots 38, as seen in Fig. 12, of body 12. This articulation between locking pins 26b and slots 38 fix junction box lid 26 to body 12.
  • Sealing strip 26a which may be silica gel, forms a seal between junction box lid 26 and body 12.
  • junction box lid 26 to body 12 in the aforementioned manner is not the only way contemplated herein. Any other means known to one of skill in the art for affixing and sealing is also contemplated herein. Such other means include publicly known buckle mechanisms or threaded fasteners and these can be used instead of locking pins 26b. Also, when junction box 50 has been mounted but before lid 26 has been affixed, it may be preferable to pour sealant into containment space 18. Such sealant is preferably a silica gel having high thermal conductivity so as to protect and seal the electrical components while also dissipating heat.
  • clamping part 14 and containment part 16 are preferably formed into one piece, from either being formed separately and then integrated into one piece, or made as a single unit.
  • Clamping part 14 comprises vertical wall 14a extending upward from top wall 16a and horizontal wall 14b, which faces and is parallel to top wall 16a of containment 16.
  • a cell panel slot suitable for insertion of the edge of the cell panel is defined between top wall 16a and horizontal wall 14b.
  • the shape of clamping part 14 is not limited to that in Fig. 4a but may have any shape as long as it can form a cell panel slot.
  • junction box 50 when junction box 50 forms only part of a section of the frame, junction box 50 further comprises at least one plug block 28 located at a longitudinal end portion of body 12. As shown, body 12 is provided with plug block 28 at each longitudinal end portion. But also
  • body 12 comprises only one plug block 28.
  • junction box 50 forms an entire section, no plug block 28 is provided in body 12.
  • Plug block 28 and the end walls of containment part 16 have one or more cable openings 28a that extend longitudinally from the outer end of plug block 28 into containment space 18.
  • each male connection cable or female connection cable can pass through plug block 28 and the end walls of containment part 16 and be connected to wiring board 20.
  • plug block 28 can be inserted into profile segment 32' so that junction box 50 and profile segment 32' together form a section of the frame.
  • Profile segment 32' can have a structure different from or identical to profile segment 32 previously described.
  • Plug 22a of corresponding male connection cable 22 or socket 24a of a female connection cable 24 extends to the corresponding external end of the frame section, and preferably extends to a distance outside the external end of the frame section suitable for external plugging operation.
  • junction box 50 can be arranged anywhere on the frame section by providing either no or one plug block 28 of suitable length at one or both ends of body 12.
  • the junction box 50 may be configured as a corner joint connecting shared frame sections forming an angle with each other.
  • Fig. 4d depicts junction box 50 as such a corner joint connecting with other frame sections 32' to form frame 32.
  • Figs. 4a, 4c, and 4d depict that plug 22a and socket 24a form the output terminals of junction box 50 and are at the opposite ends of the frame section in which junction box 50 is situated.
  • One end of connection cable 3 has plug 3a adjacent to and corresponding with socket 24a; the other end of connection cable 3 has socket 3b adjacent to and corresponding with plug 22a.
  • connection cables 22 and 24 injunction box 50 are shown.
  • Male connection cable 22 and female connection cable 24 may be connected directly to wiring board 20 or via connecting wires 36.
  • top wall 16a of containment part 16 is provided with opening 40 suitable for the lead lines to pass through.
  • Fig.l 1 shows that both body 12 and plug block 28 have the same shape and profile.
  • profile segments 32' will preferable have the same or compatible shape as body 12 and plug block 28.
  • the resultant frame section will have a relatively uniform shape and profile. More specifically, clamping part 14' of profile segment 32' will have a shape and profile consistent with that of clamping part 14 of body 12 of junction box 50.
  • cylinder part 16' will have a shape and profile consistent with that of the containment part 16 of junction box 50. Cylinder part 16' is hollow; plug block 28 is adapted to fit snugly into cylinder part 16'. Plug block 28 and/or cylinder part 16' may include a guiding, locking and/or fastening means to facilitate their articulation.
  • Fig. 6 shows articulation of the elements injunction box 50.
  • Wiring board 20 may be affixed to containment part 16 by screws 44 turned into threaded holes 42, shown in Fig. 12, or by other fastening methods such as a buckle structure.
  • Fig. 9 depicts variations of male connection cable 22and female connection cable 24.
  • 22a identifies the plug of male connection cable 24
  • 24a identifies the socket of female connection cable 24.
  • Figs. 7 and 8 depict details of wiring board 20.
  • Wiring board 20 comprises substrate 46 having at least two conductive areas 48 to which plug-in connector 52 is affixed.
  • Switching diode 54 is mounted between two adjacent conductive areas 48 that are electrically isolated from each other.
  • Fig. 2 shows how diode 54 is situated in solar cell panel 100. In this way, a connection line consisting of plug-in connectors 52 and diodes 54 connected in series by the conductive areas 48 is formed on the substrate 46.
  • Wiring board 20 can be a printed circuit board (PCB), under which circumstance substrate 46 is a printed circuit board substrate.
  • PCB printed circuit board
  • wiring board 20 may be any other form as long as the connection line can be fixed on it, such as a strip-like piece of polymeric insulating material prepared with grooves or similar structures by which to affix the plug-in connectors 52 and the diodes 54.
  • the lead lines of solar cells 1 or solar cell strings 2 may be guided to pass through apertures 40 in top wall 16a into containment space 18 and be inserted into plug-in connectors 52.
  • plug-in connector 52 comprises conductive bottom plate 56 fixed on conductive area 48 and two opposing reeds 58 projecting from conductive bottom plate 56. There is either no or a small gap between reeds 58, such that after a lead line of solar cell 1 or solar cell string 2 is inserted between the reeds, the opposing reeds will be elastically separated and thus will clamp the end portion of the lead line.
  • the pins on diode 54 can be affixed onto conductive area 48 via holes 68, thereby electrically connecting plug-in connectors 52 and diodes 54.
  • plug-in connectors 52 and diodes 54 One of skill in the art will appreciate that other ways of electrically connecting the connectors and diodes may be used, and these are contemplated herein.
  • Each plug-in connector 52 has horizontal plug-in connector 62 for the insertion of connecting wires 36 that connect male connection cable 22 and female connection cable 24 (see Fig. 5).
  • Each horizontal plug-in connector 62 has conductive bottom plate 64 connecting perpendicularly to conductive bottom plate 56 and opposing reeds 66 projecting from conductive bottom plate 64. The configuration and function of opposing reeds 66 are similar to those of opposing reeds 58.
  • Reed-type connectors 52 and 62 facilitate electrical connection of the lead lines of solar cells 1 or solar cell strings 2 with the male connection cable 22 and female connection cable 24 by allowing these to be plugged in and removed easily, thereby greatly simplifying installation and maintenance of junction box 50.
  • Fig. 15 shows common type junction box 50' mounted between two adjacent cell panels 10 adjacent to each other.
  • body 12 comprises a clamping part 14 and a containment part 16 that are assembled together or formed into one piece.
  • the clamping part 14 is configured to clamp the edges of two cell panels on its two sides.
  • the containment part 16 has a top wall 16a and a bottom wall 16b, wherein the top wall 16a can abut against the edges of the two cell panels.
  • a common containment space is formed between the top wall 16a and the bottom wall 16b to accommodate the common wiring board 20, male connection cable 22 and female connection cable 24.
  • the clamping part 14 comprises common vertical wall 14a extending upward from the longitudinal centerline of top wall 16a of e containment part 16 and two horizontal walls extending along two opposite directions from the upper edge of the common vertical wall 14a and being perpendicular to the common vertical wall.
  • the two horizontal walls 14b face and are parallel to top wall 16a of the containment part.
  • Two cell panel slots respectively suitable for the insertion of the edges of two adjacent cell panels adjacent with each other are defined between top wall 16a and the two horizontal walls 14b.
  • Other structural features of the common type junction box 50' are similar to junction box 50 for single cell panel previously described, and thus are not described in detail.
  • Fig. 17 shows that profile segments 32" and common type junction box 50' have similar shape and profile, such that upon joining segments 32" and junction box 50', the resultant frame or frame section will have a similar shape and profile.
  • Fig. 18 depicts the process of mounting junction box 50 onto cell panel 10. The back side of cell panel 10 is shown. When junction box 50 has joined with profile segments 32' to form a section of the frame, inserting an edge of cell panel 10 into the combined frame section completes the connection between cell panel 10 and junction box 50. Sealing strip 26a (for example, silica gel) may be applied around the opening of junction box 50, after which junction box lid 26 is placed over the opening, which allows junction box 50 to be mounted to cell panel 10.
  • Sealing strip 26a for example, silica gel
  • Fig. 18 shows mounting the junction box to the back side of cell 10
  • junction box 50 is integrated into a section of the frame. Therefore, the junction box will not cause a rise of temperature in part of the module, and will not affect the output efficiency of the module and reduce the long-term service life of the module.
  • adjacent solar cell modules can establish electrical interconnection by simply plugging in their male and female connectors, without the use of any additional cables, which enables the mounting process to be finished simply, quickly and at a low-cost. Furthermore, the detection and maintenance of the solar cell module can also be realized easily.
  • the frame sections, the corner joints, the body and the plug-in block of the junction box molded of polymeric material via injection molding or extrusion molding. Any of these parts may be made of the same or different polymeric material as any other part.
  • the polymeric material suitable for making these parts includes PET (polyethylene terephthalate), PBT (polybutylene terephthalate), PTT (polytrimethylene terephthalate), PA6 (polycaprolactam), PA66 (polyamides 66), PA46 (polyamides 46), PAR (aromatic polyamides), PC (polycarbonate), ABS (acrylonitrile /butadiene/styrene copolymer), PU (polyurethane), PPO (polyphenylene oxide), LCP (liquid crystal polymers), PEI
  • Polyesters suitable for use in these parts comprise thermoplastic polyester homopolymers and copolymers.
  • Thermoplastic polyesters are typically derived from one or more dicarboxylic acids and diols.
  • Suitable dicarboxylic acids are those selected from the group consisting of terephthalic acid, isophthalic acid, naphthalene dicarboxylic acids, cyclohexane dicarboxylic acids, succinic acid, glutaric acid, adipic acid, sebacic acid, 1,12-dodecane dioic acid, fumaric acid, maleic acid, and the derivatives thereof, such as, for example, the dimethyl, diethyl, or dipropyl esters.
  • glycols that can be utilized as the diol component include ethylene glycol, 1,3-propylene glycol, 1 ,2-propylene glycol, 2,2- diethyl- 1,3 -propane diol, 2,2-dimethyl-l,3-propane diol, 2-ethyl-2-butyl- 1,3 -propane diol, 2-ethyl-2-isobutyl- 1,3 -propane diol, 1,3-butane diol, 1,4-butane diol, 1,5-pentane diol, 1,6-hexane diol, 2,2,4-trimethyl- 1,6-hexane diol, 1 ,2-cyclohexane dimethanol.
  • 1,3- cyclohexane dimethanol 1,3- cyclohexane dimethanol, 1 ,4-cyclohexane dimethanol, 2,2,4,4-tetramethyl-l,3- cyclobutane diol, isosorbide, naphthalene glycols, diethylene glycol, triethylene glycol, resorcinol, hydroquinone, and longer chain diols and polyols, such as polytetramethylene ether glycol, which are the reaction products of diols or polyols with alkylene oxides.
  • the dicarboxylic acids comprise one or more of terephthalic acid, isophthalic acid and 2,6-naphthalene dicarboxylic acid
  • the diol component comprises one or more of HO(CH 2 ) n OH (I), 1 ,4-cyclohexanedimethanol, HO(CH 2 CH 2 0) m CH 2 CH 2 OH (II), and HO(CH 2 CH 2 CH 2 CH 2 0) z CH 2 CH 2 CH 2 CH 2 OH (III), wherein n is an integer of 2 to 10, m on average is 1 to 4, and is z an average of about 7 to about 40.
  • (II) and (III) may be a mixture of compounds in which m and z, respectively, may vary and hence since m and z are averages, they do not have to be integers.
  • n 2, 3 or 4, and/or m is 1.
  • polyesters include without limitation poly(ethylene
  • thermoplastic polyesters are selected from poly(ethylene
  • PET poly(trimethylene terephthalate)
  • PBT poly(l,4-butylene terephthalate)
  • PCT poly(l,4-cyclohexyldimethylene terephthalate)
  • a suitable poly(ethylene terephthalate) homopolymer for the invention is commercially available under the tradename Rynite ® poly(ethylene terephthalate) polyester resins from E.I. du Pont de Nemours and Co., Wilmington, DE.
  • a suitable poly(l,4-butylene terephthalate) homopolymer for the invention is commercially available under the tradename Crastin® PBT polyester resins from E.I. du Pont de Nemours and Co., Wilmington, DE.
  • Preferred PTT copolymers contain at least about 85 mol%, at least about 90 mol%, at least about 95 mol%, or at least about 98 mol%, of copolymerized units of trimethylene terephthalate.
  • a suitable poly(trimethylene terephthalate) homopolymer for the invention is commercially available under the tradename Sorona® from E.I. du Pont de Nemours and Co., Wilmington, DE.

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Abstract

La présente invention concerne une boîte de jonction destinée à être utilisée dans un module de cellule solaire, un cadre qui comprend la boîte de jonction, et un module de cellule solaire qui comprend la boîte de jonction. La boîte de jonction peut former une partie d'une section du cadre ou des joints d'angle du cadre et s'étend le long du bord du panneau à cellule. La boîte de jonction comprend : un corps qui comprend une partie de serrage et une partie de confinement conçue pour serrer le bord du panneau à cellule ; un tableau de connexion qui est monté dans la partie de confinement et qui comporte une ligne de connexion avec au moins une diode de commutation ; un câble de connexion mâle connecté à une extrémité de la ligne de connexion et qui comprend une fiche ; et un câble de connexion femelle connecté à l'autre extrémité de la ligne de connexion et qui comprend une prise.
PCT/US2011/033840 2010-04-26 2011-04-26 Boîte de jonction, composant cadre et module de cellule solaire WO2011139648A2 (fr)

Priority Applications (3)

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JP2013508137A JP2013526064A (ja) 2010-04-26 2011-04-26 接続箱、フレーム部材およびソーラセルモジュール
DE212011100086U DE212011100086U1 (de) 2010-04-26 2011-04-26 Verteilerkasten, Rahmenkomponente und Solarzellenmodul
DE112011101537T DE112011101537T5 (de) 2010-04-26 2011-04-26 Verteilerkasten, Rahmenkomponente und Solarzellenmodul

Applications Claiming Priority (4)

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CN201010162977.5A CN102237413B (zh) 2010-04-26 2010-04-26 太阳能电池的边框组件、模块、系统及安装方法
CN201010162977.5 2010-04-26
CN201010162992.XA CN102237423B (zh) 2010-04-26 2010-04-26 接线盒、边框组件及太阳能电池模块
CN201010162992.X 2010-04-26

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CN102551953A (zh) * 2012-03-08 2012-07-11 厦门高科防静电装备有限公司 焊接作业自动变光眼镜
CN102636207A (zh) * 2012-04-18 2012-08-15 中国科学院寒区旱区环境与工程研究所 一种适用于高原多年冻土地区的长期监测辅助系统
CN102956753A (zh) * 2012-11-29 2013-03-06 江苏爱动力自动化设备有限公司 太阳能电池组件长边框自动成型机
WO2013086265A1 (fr) * 2011-12-08 2013-06-13 E. I. Du Pont De Nemours And Company Module de photopile
DE102012006033A1 (de) * 2012-03-27 2013-10-02 Kostal Industrie Elektrik Gmbh Elektrische Anschluss- und Verbindungsvorrichtung für ein Solarzellenmodul
US8754171B2 (en) 2012-05-10 2014-06-17 E I Du Pont De Nemours And Company Polyester composition
US20150372637A1 (en) * 2014-06-20 2015-12-24 Neo Solar Power Corp. Solar module frame
EP3089355A4 (fr) * 2013-12-27 2017-01-11 BYD Company Limited Module cellule photovoltaïque à double verre
US9685568B2 (en) 2014-03-12 2017-06-20 Merlin Solar Technologies, Inc. Photovoltaic module with flexible circuit
CN109524829A (zh) * 2018-11-22 2019-03-26 深圳市泰格莱精密电子有限公司 防呆电连接器接口系统
EP3769414A4 (fr) * 2018-03-19 2022-03-02 Lumeta, LLC Appareil et procédé pour panneau solaire avec gestion intégrée de câbles
WO2023076429A1 (fr) * 2021-10-26 2023-05-04 Origami Solar Procédés et systèmes de liaison de composants de cadre de panneau solaire

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JP2012253184A (ja) * 2011-06-02 2012-12-20 Sharp Corp 太陽電池モジュール用フレームおよび太陽電池モジュール
JP6136005B2 (ja) * 2013-06-04 2017-05-31 住友電気工業株式会社 太陽電池モジュール
EP3013901B1 (fr) * 2013-06-28 2020-11-04 Dow Global Technologies LLC Cadre et support de module photovoltaïque en plastique et composition pour leur fabrication
CN104753457B (zh) * 2013-12-27 2017-05-31 比亚迪股份有限公司 双玻光伏组件
JP6368604B2 (ja) * 2014-09-25 2018-08-01 株式会社カネカ 太陽電池モジュール及び太陽電池モジュールの設置方法
FR3060241B1 (fr) * 2016-12-09 2021-04-02 Commissariat Energie Atomique Module photovoltaique et panneau de modules photovoltaiques interconnectes
DE102018125742A1 (de) * 2018-10-17 2020-04-23 Hanwha Q Cells Gmbh Befestigungsrahmen für ein Photovoltaikmodul

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013086265A1 (fr) * 2011-12-08 2013-06-13 E. I. Du Pont De Nemours And Company Module de photopile
CN102551953A (zh) * 2012-03-08 2012-07-11 厦门高科防静电装备有限公司 焊接作业自动变光眼镜
DE102012006033A1 (de) * 2012-03-27 2013-10-02 Kostal Industrie Elektrik Gmbh Elektrische Anschluss- und Verbindungsvorrichtung für ein Solarzellenmodul
CN102636207A (zh) * 2012-04-18 2012-08-15 中国科学院寒区旱区环境与工程研究所 一种适用于高原多年冻土地区的长期监测辅助系统
US8754171B2 (en) 2012-05-10 2014-06-17 E I Du Pont De Nemours And Company Polyester composition
CN102956753A (zh) * 2012-11-29 2013-03-06 江苏爱动力自动化设备有限公司 太阳能电池组件长边框自动成型机
US10186625B2 (en) 2013-12-27 2019-01-22 Byd Company Limited Double-glass photovoltaic cell module
EP3089355A4 (fr) * 2013-12-27 2017-01-11 BYD Company Limited Module cellule photovoltaïque à double verre
US9842945B2 (en) 2014-03-12 2017-12-12 Merlin Solar Technologies, Inc. Photovoltaic module with flexible circuit
US9685568B2 (en) 2014-03-12 2017-06-20 Merlin Solar Technologies, Inc. Photovoltaic module with flexible circuit
US9853598B2 (en) * 2014-06-20 2017-12-26 Neo Solar Power Corp. Solar module frame
US20150372637A1 (en) * 2014-06-20 2015-12-24 Neo Solar Power Corp. Solar module frame
EP3769414A4 (fr) * 2018-03-19 2022-03-02 Lumeta, LLC Appareil et procédé pour panneau solaire avec gestion intégrée de câbles
CN109524829A (zh) * 2018-11-22 2019-03-26 深圳市泰格莱精密电子有限公司 防呆电连接器接口系统
WO2023076429A1 (fr) * 2021-10-26 2023-05-04 Origami Solar Procédés et systèmes de liaison de composants de cadre de panneau solaire

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WO2011139648A3 (fr) 2012-02-23
DE112011101537T5 (de) 2013-02-28
JP2013526064A (ja) 2013-06-20
DE212011100086U1 (de) 2012-12-13

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