CN103165751A - Aligning technology for solar cells in linear concentrating module production - Google Patents
Aligning technology for solar cells in linear concentrating module production Download PDFInfo
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- CN103165751A CN103165751A CN2013100863919A CN201310086391A CN103165751A CN 103165751 A CN103165751 A CN 103165751A CN 2013100863919 A CN2013100863919 A CN 2013100863919A CN 201310086391 A CN201310086391 A CN 201310086391A CN 103165751 A CN103165751 A CN 103165751A
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Abstract
The invention discloses an aligning technology for solar cells in linear concentrating module production. A linear concentrating module production technology includes the steps: testing cells in a stepped manner; cutting the cells to form strip-shaped solar cells; welding the strip-shaped solar cells to form grating cells; serially welding the grating cells to form a cell string; stacking the cells; and inspecting and testing the cells. In the stacking process, firstly, a linear concentrating glass panel is placed well; secondly, a cell sealing material layer is laid on the linear concentrating glass panel; thirdly, the cell string is placed, and the center of each strip-shaped solar cell in the cell string is aligned to the center of an optical structure of each linear concentrating curved surface on the linear concentrating glass panel by the aid of a positioning device; and finally, a cell sealing material layer and a rear panel material layer are sequentially laid after alignment is finished. By the aid of the aligning technology, the center of each strip-shaped solar cell and the center of each linear concentrating curved surface in the linear concentrating glass panel are accurately aligned and overlapped, so that the strip-shaped solar cells can sufficiently receive sunlight collected by the linear concentrating glass panel, and use of the solar cells is ensured.
Description
Technical field
The invention belongs to technical field of solar utilization technique, particularly the alignment process of solar cell in a kind of linear concentrating component production.
Background technology
That solar energy has is clean, the No Assets regional limits, concerning the mankind forever without the good characteristic such as exhausted, more and more be subject to people's favor, wherein solar energy photovoltaic utilization is that the sunlight technology that is directly changed into electric energy by photovoltaic device is especially noticeable.
At present, the production process of domestic photovoltaic solar battery component, comprise the test of the stepping of common crystal silicon solar battery sheet, monolithic welding and the series welding of cell piece, and lamination, lamination solidifies and the assembling of aluminum alloy frame.Crystalline silicon battery plate used in whole technical process is due to the price comparison costliness; use amount is larger; therefore the photovoltaic solar battery component cost that final production goes out is higher; cause the cost of electricity-generating of present stage photovoltaic generation to exceed several times than the conventional power generation usage cost; therefore limit the scale application of photovoltaic power generation technology, restricted the development of whole industry.
Therefore, can be in the situation that guarantee solar energy photovoltaic utilization, effectively reduce the cell piece consumption of normal optical photovoltaic assembly, thereby reduce the photovoltaic module production cost and become important research direction, in the production technology of existing solar module, after solar cell piece is cut in employing, principle by optically focused, utilize the condensing glass panel that sunlight is converged on each strip solar cell after cutting, in order to guarantee that the strip solar cell can fully receive the sunlight that the condensing glass panel converges, therefore in the production of solar module, seem very important for the strip solar cell with aliging of optically focused curved surface in the condensing glass panel.
Summary of the invention
The object of the invention is to: for the problem of above-mentioned existence, provide a kind of in linear concentrating component is produced, the solar cell alignment process that can accurately be alignd with each line style optically focused center of surface in line condensing glass panel in strip solar cell center and overlap.
Technical scheme of the present invention is achieved in that the alignment process of solar cell in a kind of linear concentrating component production, described linear concentrating component production technology comprises the following steps: the test of cell piece stepping, the cell piece cutting forms the strip solar cell, the strip cell welding forms the grid cell piece, the series connection welding of grid cell piece forms battery strings, stacked, check and test, it is characterized in that: in described lamination process, after first line condensing glass panel being put well, lay one deck battery sealing material on online condensing glass panel again, then put battery strings and adopt positioning equipment by the optical texture center-aligned of each line style optically focused curved surface on the center of each strip solar cell in battery strings and line condensing glass panel, after contraposition completes, lay successively again one deck battery sealing material and back veneer material.
The alignment process of solar cell in linear concentrating component production of the present invention, on its described line condensing glass panel, the optical texture center of line style optically focused curved surface is identified by two position sensors, described position sensor is made the peak of motion determination line style optically focused curved surface along the optical texture face of line style optically focused curved surface on line condensing glass panel, then judge the center line of line style optically focused curved surface, the strip solar cell carries out front and back by the strip cell location mobile device, left and right or spinning movement, the center of line style optically focused curved surface on the line condensing glass panel that the strip cell location mobile device identifies according to position sensor, do corresponding action according to deviate, the strip solar cell is carried out to position correction, the optical texture center-aligned of line style optically focused curved surface on Shi Qi center and line condensing glass panel.
The alignment process of solar cell in linear concentrating component production of the present invention, after converging the sunray received, its described line condensing glass panel projects on described battery strings, in described line condensing glass panel, each line style optically focused curved surface converges the width that the line style optically focused light width formed after sunlight is not more than each strip solar cell in described battery strings, or in described line condensing glass panel, each line style optically focused curved surface converges the width that the line style optically focused light width formed after sunlight is not less than each strip solar cell in described battery strings.
The alignment process of solar cell in linear concentrating component production of the present invention, it is consistent with the width of each strip solar cell in described battery strings that in its described line condensing glass panel, each line style optically focused curved surface converges the line style optically focused light width formed after sunlight, and the spacing between described adjacent two strip solar cells is consistent with the spacing between the line style optically focused light of adjacent line style optically focused Surface forming.
The alignment process of solar cell in linear concentrating component production of the present invention, in its described grid-like cell piece, each strip solar cell upper surface receiving plane at grade, at grade, the receiving plane that described each battery strings upper surface forms at grade for the receiving plane that in described battery strings, each grid-like cell piece upper surface forms.
The present invention is the control to strip solar cell all around or spinning movement to the identification of the center of line style optically focused curved surface on line condensing glass panel and strip cell location mobile device by two position sensors, accurately make the coincidence of aliging with each line style optically focused center of surface in line condensing glass panel of strip solar cell center, in use, make the strip solar cell can fully receive the sunlight that in line condensing glass panel, corresponding line style optically focused curved surface converges, effectively guaranteed the utilization of solar cell.
The accompanying drawing explanation
Fig. 1 is by line condensing glass panel and positioning equipment that in battery strings, each strip solar cell aligns.
Fig. 2 is the judgement identification process figure of alignment.
Fig. 3 is the structural representation of grid-like cell piece.
Fig. 4 is the structural representation of battery strings.
Fig. 5 is the structural representation of line condensing glass panel.
Fig. 6 and Fig. 7 are bases
the cross section profile figure of the lens light gathering plane of refraction that the different values of x obtain.
Mark in figure: 1 is the strip solar cell, and 2 is interconnecting strip, and 3 is grid-like cell piece, and 4 is battery strings, and 5 is line condensing glass panel, and 6 is position sensor, and 7 is the strip cell location mobile device, and 8 is incident ray, and 9 is vertical central axis.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The alignment process of solar cell in a kind of linear concentrating component production, described linear concentrating component production technology comprises the following steps:
A), cell piece stepping test, the current value when carrying out cell piece after the power stepping according to its maximum power output carries out stepping.
B), cell piece cutting, adopt laser or diamond along perpendicular to the direction of cell piece main grid line, crystal-silicon solar cell being carried out to cutting process, form the strip solar cell.
C), strip cell welding, some solar cells that cut into strip are arranged at a certain distance, and by interconnecting strip 8, it are carried out to the electricity connection, form grid-like cell piece 3, as shown in Figure 3.
D), the series connection of grid cell piece welding, some grid-like cell pieces 9 that form through step c) are arranged at a certain distance and are welded, form battery strings 4, as shown in Figure 4.
E), stacked, successively that line condensing glass panel, battery sealing material, battery strings, battery sealing material and back veneer material is stacked, battery strings difference is grid-like by convergent belt is electrically connected.Wherein, after first line condensing glass panel being put well, lay one deck battery sealing material on online condensing glass panel again, then put battery strings and adopt positioning equipment by the optical texture center-aligned of each line style optically focused curved surface on the center of each strip solar cell in battery strings and line condensing glass panel, after contraposition completes, then lay successively one deck battery sealing material and back veneer material.As shown in Figure 1, on described line condensing glass panel 5, the optical texture center of line style optically focused curved surface is identified by two position sensors 6, described position sensor 6 is made the peak of motion determination line style optically focused curved surface along the optical texture face of line style optically focused curved surface on line condensing glass panel 5, then judge the center line of line style optically focused curved surface, strip solar cell 1 carries out front and back by strip cell location mobile device 7, left and right or spinning movement, the center of line style optically focused curved surface on the line condensing glass panel 5 that strip cell location mobile device 7 identifies according to position sensor 6, do corresponding action according to deviate, the strip solar cell is carried out to position correction, the optical texture center-aligned of line style optically focused curved surface on Shi Qi center and line condensing glass panel, it is consistent with the width of each strip solar cell in described battery strings that in described line condensing glass panel, each line style optically focused curved surface converges the line style optically focused light width formed after sunlight, and the spacing between described adjacent two strip solar cells is consistent with the spacing between the line style optically focused light of adjacent line style optically focused Surface forming, in described grid-like cell piece, at grade, at grade, the receiving plane that described each battery strings upper surface forms at grade for the receiving plane that in described battery strings, each grid-like cell piece upper surface forms for each strip solar cell upper surface receiving plane.Be illustrated in figure 2 the judgement identification process figure for each strip solar cell of line condensing glass panel and battery strings is alignd.
Wherein, as shown in Figure 5, described line condensing glass panel upper surface is the lens light gathering plane of refraction, its lower surface is burnishing surface, described lens horizontal expansion is strip, thereby described line condensing glass panel can be refracted to the incident ray be parallel to each other on the grid-like cell piece that is arranged at line condensing glass panel below and form line style optically focused light, if wherein the contact point of any incident ray 8 and described lens light gathering plane of refraction is x with the vertical range between corresponding lens vertical central axis 9 on this line condensing glass panel, this incident ray 8 is m through lens reflection to the subpoint formed after on corresponding strip solar cell and the vertical range of described line style optically focused light length direction center line, described lens light gathering plane of refraction edge is a to the vertical range of vertical central axis 9, subpoint through the incident ray of described lens light gathering plane of refraction edge refraction on the battery dash receiver and the vertical range of described line style optically focused light length direction center line are b, the satisfied condition of these lens is x/m=a/b, wherein, the incidence point of described this incident ray 8 is vertical with described line style optically focused light length direction center line with the vertical plane that lens light gathering plane of refraction both sides of the edge form, the contour shape that this vertical plane top is the lens light gathering plane of refraction, incidence angle during described incident ray 8 process lens light gathering plane of refraction is β, refraction angle is
this incident ray 8 through the refraction after light and the angle of strip solar cell be α, the vertical range of described lens light gathering plane of refraction edge and strip solar cell is h, in this vertical plane, form plane coordinate system by vertical central axis 9 and lens light gathering plane of refraction both sides of the edge line, the lens light gathering plane of refraction both sides of the edge line mid point of take is the origin of coordinates, and the curvilinear equation of contour shape in described plane coordinate system of the lens light gathering plane of refraction on this vertical plane top drawn by following formula:
Formula 1:x/m=a/b, x=a-N*
x, wherein
x is a distance very little on X-direction, and N shows this closely spaced number;
Formula 2:y
n=y
n-1+
x*tan β;
Formula 3:tan α=(h+y
n)/(a-m), m=b-N*
x*b/a;
Formula 4:sin β=n*sin
, wherein coefficient n is the index of refraction in lens;
Formula 5: α-
+ β=pi/2,
=(alpha+beta)-pi/2;
Formula 6:sin β=n*sin[(alpha+beta)-pi/2]=the n*[-cos(alpha+beta)]=n*(sin α * sin β-cos α * cos β);
Formula 7:tan β=n*cos α/(n*sin α-1);
Wherein, a, b, h, n,
x is known, and y
0=0, variable x is the lateral separation between vertical central axis on any point and this vertical plane on described lens light gathering plane of refraction, the fore-and-aft distance between the plane that variable y is this point and place, lens light gathering plane of refraction both sides of the edge.
Described lens light gathering plane of refraction edge to the vertical range a of vertical central axis 9 and through the incident ray of described lens light gathering plane of refraction edge refraction at the subpoint of strip solar cell and the vertical range b of described line style optically focused light length direction center line, it meets the following conditions: 1<a/b≤10 o'clock, effect is best, this is a preferred value, is not rigid condition.
Wherein, the contour shape of described lens light gathering plane of refraction on vertical plane be for having polygonal structure, along with
the x value diminishes, and the polygon limit number of lens light gathering plane of refraction is more, until form round and smooth line style arc optically focused curved surface.
For example: when entry condition is respectively: a=3, b=0.5, h=7.5, during n=1.51893; If
x=3, can calculate 2 points, and coordinate is respectively (3,0) and (0,3.267658), and the whole curved surface obtained about the y axial symmetry at the point obtained is shape as shown in Figure 6.
If
x=1.5, can calculate 3 points, and coordinate is respectively (3,0), (1.5,1.633829) and (0,2.245685), and the whole curved surface obtained about the y axial symmetry at the point obtained is shape as shown in Figure 7.
By that analogy, can obtain the polygonized structure lens light gathering plane of refraction of various limits shape, wherein,
x should be satisfied condition be a/
x=M, M is any one integer, when
when x is enough little, we have just obtained a level and smooth line style arc optically focused curved surface, and in order to obtain high as far as possible transmitance, we
x generally can be very little, sets up and meet processing request for the ease of model simultaneously, and generally we get 2000<a/
x<10000.
F), check and test, the line concentrating component after stacked is carried out to visual examination, then carry out the EL test, finally carry out subsequent handling.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
- A linear concentrating component produce in the alignment process of solar cell, described linear concentrating component production technology comprises the following steps: the test of cell piece stepping, the cell piece cutting forms the strip solar cell, the strip cell welding forms the grid cell piece, the series connection welding of grid cell piece forms battery strings, stacked, check and test, it is characterized in that: in described lamination process, after first line condensing glass panel being put well, lay one deck battery sealing material on online condensing glass panel again, then put battery strings and adopt positioning equipment by the optical texture center-aligned of each line style optically focused curved surface on the center of each strip solar cell in battery strings and line condensing glass panel, after contraposition completes, lay successively again one deck battery sealing material and back veneer material.
- Linear concentrating component according to claim 1 produce in the alignment process of solar cell, it is characterized in that: on described line condensing glass panel, the optical texture center of line style optically focused curved surface is identified by two position sensors, described position sensor is made the peak of motion determination line style optically focused curved surface along the optical texture face of line style optically focused curved surface on line condensing glass panel, then judge the center line of line style optically focused curved surface, the strip solar cell carries out front and back by the strip cell location mobile device, left and right or spinning movement, the center of line style optically focused curved surface on the line condensing glass panel that the strip cell location mobile device identifies according to position sensor, do corresponding action according to deviate, the strip solar cell is carried out to position correction, the optical texture center-aligned of line style optically focused curved surface on Shi Qi center and line condensing glass panel.
- Linear concentrating component according to claim 2 produce in the alignment process of solar cell, it is characterized in that: described line condensing glass panel projects on described battery strings after the sunray received is converged, in described line condensing glass panel, each line style optically focused curved surface converges the width that the line style optically focused light width formed after sunlight is not more than each strip solar cell in described battery strings, or in described line condensing glass panel, each line style optically focused curved surface converges the width that the line style optically focused light width formed after sunlight is not less than each strip solar cell in described battery strings.
- Linear concentrating component according to claim 3 produce in the alignment process of solar cell, it is characterized in that: it is consistent with the width of each strip solar cell in described battery strings that in described line condensing glass panel, each line style optically focused curved surface converges the line style optically focused light width formed after sunlight, and the spacing between described adjacent two strip solar cells is consistent with the spacing between the line style optically focused light of adjacent line style optically focused Surface forming.
- Linear concentrating component according to claim 4 produce in the alignment process of solar cell, it is characterized in that: in described grid-like cell piece, each strip solar cell upper surface receiving plane at grade, at grade, the receiving plane that described each battery strings upper surface forms at grade for the receiving plane that in described battery strings, each grid-like cell piece upper surface forms.
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Cited By (3)
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| CN104646788A (en) * | 2015-02-28 | 2015-05-27 | 李忠炎 | Process and equipment for manually welding solar components |
| CN108470707A (en) * | 2018-04-17 | 2018-08-31 | 无锡市精电技术有限公司 | A kind of solar battery sheet composing device |
| CN109309144A (en) * | 2018-10-26 | 2019-02-05 | 合肥晶澳太阳能科技有限公司 | A kind of photovoltaic component lamination localization method, tooling and structure |
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| CN104646788A (en) * | 2015-02-28 | 2015-05-27 | 李忠炎 | Process and equipment for manually welding solar components |
| CN108470707A (en) * | 2018-04-17 | 2018-08-31 | 无锡市精电技术有限公司 | A kind of solar battery sheet composing device |
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