CN201859887U - fly's eye light-focusing solar battery component - Google Patents

Abstract

The utility model discloses a fly's eye light-focusing solar battery component, which can be used for quickly and accurately mounting a plurality of photovoltaic battery wafers on a circuit board. The component adopts a box structure which is formed by packaging a fly's eye lens condenser and the circuit board with the plurality of photovoltaic battery wafers; the fly's eye lens condenser comprises a plurality of light-focusing lenses arrayed in one plane; the light-focusing lenses respectively correspond to the photovoltaic battery wafers; the photovoltaic battery wafers are battery units which are formed by cutting a back contact silicon solar battery; and the battery units are packaged on the circuit board through SMT (Surface Mounting Technology). The solar battery component applies the surface mounting technology to the photovoltaic battery wafer packaging process, and adopts the method that the back contact silicon solar battery is cut into the battery units, thereby overcoming the difficulty of the surface mounting technology in shifting, automatically packaging the plurality of the photovoltaic battery wafers on the circuit board, and improving the production efficiency.

Description

The compound eye type photovoltaic concentrator module

Technical field

The utility model relates to the compound eye type photovoltaic concentrator module in the light gathering photovoltaic power generating system.

Background technology

The concentrating photovoltaic power generation technology is the effective way of the reduced photovoltaic generation cost of generally acknowledging.At present, a complete light gathering photovoltaic power generating system mainly comprises several parts such as compound eye type photovoltaic concentrator module, sun tracker, power storage or contravariant equipment.The compound eye type photovoltaic concentrator module is a box-structure that is formed by compound eye type lens light gathering device and the circuit board encapsulation that multi-disc photovoltaic cell wafer is installed as photoelectric conversion part.

Wherein, described compound eye type lens light gathering device is made of the collector lens of polylith planar array, and these collector lenses are corresponding with described each photovoltaic cell wafer respectively.During use, make collector lens substantially over against sunniness direction by sun tracker, respectively sunlight is converged and projects on the circuit board on the receiving plane with the corresponding photovoltaic cell wafer of each collector lens by these collector lenses then, make in each photovoltaic cell wafer and produce electric current, these electric currents are exported by the circuit on the circuit board.

At present, because the photovoltaic cell wafer that is adopted in the compound eye type photovoltaic concentrator module is conventional silicon solar cell, the emitter region of these batteries and emitter region electrode all are positioned at the front of battery, therefore these photovoltaic cell wafer package on circuit board the time, need received the back side of another piece photovoltaic cell wafer with being coated with the tin band from the face bonding of a photovoltaic cell wafer.This connected mode difficulty is bigger, must be hand-manipulated, and production efficiency is not high.

In addition, for the structure of compound eye type lens light gathering device, publication number is that the disclosed photovoltaic concentrator module of utility application file of CN101640502A has representativeness.The point optically focused Fresnel Lenses that adopts in this battery component has become the best choosing folding of the generally acknowledged collector lens of industry.Still have many disclosing to adopt the optically focused Fresnel Lenses to make the list of references of the concentrating photovoltaic power generation technology of collector lens, do not repeat them here.

In fact, adopting Fresnel Lenses is not have shortcoming.Such as, because the manufacturing deficiency of Fresnel Lenses surface pattern can cause the loss of a part of incident ray, cause light penetration only to be on the reduced levels about 75%; And this manufacturing deficiency is difficult to overcome with present process technology.And for example, Fresnel Lenses can be regarded the combination by a plurality of crown of roll lens of sharing the same light as, so light spot energy distributes still even inadequately behind its optically focused.

Adopt the spherical convex lens that generally uses to substitute Fresnel Lenses and can solve the lower problem of light penetration.Yet, spherical convex lens can only concentrate on light the focus of these lens, therefore no matter the photovoltaic cell wafer is installed in its focus slightly forward or lean on after the position, the center of battery wafer receiving plane and the light spot energy skewness of periphery are caused in the capital, cause inside battery to produce electrical potential difference, and then the formation internal current, this a part of electric current can consume at inside battery, has reduced the battery power output; In addition, the generation of internal current also is the major reason that the temperature of inside battery raises, and internal temperature of battery raises and makes the decrease in efficiency of photovoltaic concentrator module.

The utility model content

The technical problem that the utility model solved provides a kind of compound eye type photovoltaic concentrator module that the photovoltaic cell wafer can be installed to fast and accurately on the circuit board.

The technical scheme that its technical problem that solves the utility model adopts is: the compound eye type photovoltaic concentrator module, this assembly is a box-structure that is formed by compound eye type lens light gathering device and the circuit board encapsulation that multi-disc photovoltaic cell wafer is installed, described compound eye type lens light gathering utensil has the collector lens of polylith planar array, these collector lenses are corresponding with described each photovoltaic cell wafer respectively, described each photovoltaic cell wafer all is the battery units that formed by the back contact silicon solar cell cutting, and these battery units are packaged on the described circuit board by SMT.

" back contact silicon solar cell " is meant the emitter region electrode of battery and a kind of silicon solar cell that base electrode all is positioned at cell backside.The back side point contact solar cell A-300 that representative has U.S. Sunpower company to utilize some contact and screen printing technique to work out.The utility model is preferentially selected the back contact silicon solar cell of this model for use." SMT " is the abbreviation of " surface mounting technology ", is the known technology in printing circuit board field.An outstanding substantive distinguishing features of the present utility model is that creationary application surface mounting technology realized the automation encapsulation of photovoltaic cell wafer.In the past because the photovoltaic cell wafer be conventional silicon solar cell, so the conventional package mode that can only adopt manual bonding wire with the photovoltaic cell wafer package to circuit board.And the utility model is being applied to surface mounting technology in the process of photovoltaic cell wafer package, thereby the way that has adopted the battery unit that back contact silicon solar cell is cut into has overcome the difficulty of surface mounting technology in migrating, realization is encapsulated on the circuit board the automation of multi-disc photovoltaic cell wafer, enhances productivity.

May it is pointed out that the technology of the battery unit that back contact silicon solar cell is cut into, preferably adopt former of the diamond blade back contact silicon solar cell that area is bigger to cut into battery unit, to fall to the battery structure Effect on Performance.When certainly, adopting the conventional silicon solar cell of cutting institute generally the laser cutting technique of use be not infeasible yet.

On the basis of such scheme, the utility model has also improved the structure of compound eye type lens light gathering device, is intended to make each collector lens to carry out that light spot energy distributes more even behind the optically focused.Concretely, it is the rotation convex surface of rotating shaft and the transverse plane relative with this rotation convex surface that each collector lens in this compound eye type photovoltaic concentrator module has with its optical axis, this rotation convex surface and any one intersection by the longitudinal section of this optical axis are the curve that forms projection straight line on the receiving plane that can make this upper edge, longitudinal section lens radial distribution and the incident ray parallel with optical axis be refracted to corresponding photovoltaic cell wafer, this curve is reflected on its longitudinal section, place and is that curvilinear equation in the plane coordinate system of the origin of coordinates is with the central point of described transverse plane:

$(h+y)\frac{n\frac{\frac{\mathrm{dy}}{\mathrm{dx}}}{\sqrt{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}-\frac{\mathrm{dy}}{\mathrm{dx}}\sqrt{1-n^2\frac{{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}}{\sqrt{1-n^2\frac{{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}+n\sqrt{\frac{{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}}=(1+\frac{b}{a})x$

Wherein, coefficient h is the air line distance between described transverse plane and the receiving plane; Coefficient a is the radius of described lens; Coefficient b is half length of described projection straight line; Coefficient n is the index of refraction in lens; Variable x be described curve arbitrarily a bit and the lateral separation between the lens axis, variable y is the fore-and-aft distance between this point and the transverse plane.

The acquisition of this curvilinear equation is not that the applicant carries out limited number of time experiment and just can access under the enlightenment of prior art.In fact, the acquisition of this curvilinear equation is based on that the applicant is creationary to be recognized, one that make that light spot energy is evenly distributed behind the optically focused than good method, is that the rotation convex surface of scioptics is compressed to the light equal proportion on the receiving plane.That is to say, when incident ray through on the described curve be refracted on the receiving plane more arbitrarily after, this corresponding subpoint on the abscissa x on the curvilinear equation and receiving plane is apart from the ratio between the horizontal spacing m of lens axis, should equal the radius a of described lens and the partly ratio between the long b, the i.e. x/m=a/b of described projection straight line.According to known lens law of refraction and in conjunction with top equation, can obtain a following set of equations:

x/m＝a/b-----------------------------------------------------(1)

sin(θ)＝nsin(β)--------------------------(2)

x-m＝(h-y)tan(β-θ)-----------------------(3)

$\tan \left(\mathrm{\θ}\right)=\frac{\mathrm{dy}}{\mathrm{dx}}---\left(4\right)$

Incidence angle size and refraction angle size when wherein, variable " θ " and " β " represent light through described curve respectively.The implication of all the other coefficients and variable is all explained in the above.On the basis of above-mentioned equation group, can obtain above-mentioned curvilinear equation through mathematical derivation.

Optical analog experiment finds, the transmitance of this collector lens is up to 90%～93%, and is approximately " saddle " shape by light spot energy distribution curve behind this collector lens optically focused, shows that promptly light spot energy is evenly distributed.

The shape of the rotation convex surface that in addition, this curvilinear equation determined can be achieved on industry fully.Because existing lens adopt the mode moulding of mold pressing usually, the shape of rotation convex surface is controlled by mould after the moulding.In die design process, as long as, promptly can rotate the theoretical digital-to-analogue that forms the rotation convex surface again by formation curve with above-mentioned curvilinear equation input mold design software; In die manufacture, just can process corresponding mold cavity by Digit Control Machine Tool.

Further, the periphery of each collector lens is cut into the polygonized structure with at least three cylinders; Bonding between any adjacent collector lens in this compound eye type lens light gathering device by the relative cylinder of two lens.Obviously, the periphery of each collector lens is cut into the purpose of the polygonized structure with at least three cylinders, be for convenience be planar array with being bonded together each collector lens that makes in the compound eye type lens light gathering device between the adjacent collector lens.

Concrete, the periphery of each collector lens is cut into the quadrilateral structure with four cylinders, and is wherein vertical mutually between the adjacent cylindrical; Bonding and then make the rectangular array of each collector lens in this compound eye type lens light gathering device between any adjacent collector lens in this compound eye type lens light gathering device by the relative cylinder of two lens.Obviously, the periphery of each collector lens is cut into the quadrilateral structure with four cylinders, and orthogonal purpose between the adjacent cylindrical, be the rectangular array of each collector lens that makes in this compound eye type lens light gathering device.And, the benefit that the periphery of collector lens is cut into quadrilateral structure also is, the shape of hot spot also is a quadrilateral structure behind the optically focused, therefore each battery unit also can be made quadrilateral structure accordingly, and can either save material like this when carrying out the battery cutting again can be so that processing.

The utility model also provides a kind of improvement structure of circuit board, is intended to improve the heat dispersion of circuit board and reduces distortion in the use of whole compound eye type photovoltaic concentrator module.This circuit board is by glass substrate with attached to the lamination layer structure that metal level constituted of described glass baseplate surface, the conducting surface that the metal level that forms the pin line corresponding with each battery unit and the utilization of each battery unit is connected with the pin line by etching on the described metal level is exported the electric current of generation.Metal level is not only as the conduct electrical energy passage but also owing to it has better radiating effect for the bigger conducting surface of area; Glass substrate and compound eye type lens light gathering device are glass material and have rerum natura matching preferably simultaneously, have reduced the distortion in the use of whole compound eye type photovoltaic concentrator module.

Concrete, described each battery unit is the planar rectangular array on circuit board; Conducting surface with the staggered metal level formation of every capable battery unit, each battery unit in every capable battery unit is connected in parallel on the conducting surface that is positioned at these row battery unit both sides by the pin line of correspondence, contacts by the conducting surface between these adjacent two row battery units between the adjacent two row battery units; Be positioned at the most up and the most descending conducting surface and be the conduction output face.In addition, described metal level is preferably by constituting attached to the copper coating of described glass baseplate surface and attached to the heavy tin layer on described copper coating surface.

The utility model also provides a kind of overall package structure of compound eye type photovoltaic concentrator module, by the fluid sealant that is arranged on the frame between compound eye type lens light gathering device and the circuit board and be used for described frame and this compound eye type lens light gathering device and circuit board are bonded as one described compound eye type lens light gathering device and circuit board is encapsulated a box-structure that forms.Wherein, described frame is made of the metal isolating strip of hollow and the drier that is positioned at its cavity.

The utility model also provides a kind of manufacturing process of compound eye type photovoltaic concentrator module, a plurality of battery units that this technology at first cuts into back contact silicon solar cell; Then these battery units are packaged on the circuit board by SMT; The box-structure that described circuit board and the compound eye type lens light gathering device made are packaged at last.

The beneficial effects of the utility model are: 1) realize the automation of photovoltaic cell wafer is installed on the circuit board, improved production efficiency; 2) quality of production improves.

Description of drawings

Fig. 1 is the structural representation of the utility model compound eye type photovoltaic concentrator module.

Fig. 2 is the structural representation after frame portion shown in Fig. 1 is implied.

Fig. 3 is the floor map of circuit board shown in Fig. 2.

Fig. 4 is the decomposing schematic representation of the utility model compound eye type lens light gathering device.

Fig. 4 (a) is the overall structure schematic diagram of compound eye type lens light gathering device.

Fig. 4 (b) is for constituting the structural representation of single collector lens in the compound eye type lens light gathering device.

Fig. 5 is the enlarged drawing of Fig. 1 (b).

Fig. 6 for the A of Fig. 2 to full sectional view (is section with longitudinal section 2).

Fig. 7 is light spot energy distribution curve after adopting traditional spherical convex lens as collector lens.

The abscissa of Fig. 7 is a spot width, and ordinate is an energy intensity.

Fig. 8 is a light spot energy distribution curve behind the employing collector lens of the present utility model.

The abscissa of Fig. 8 is a spot width, and ordinate is an energy intensity.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

Compound eye type photovoltaic concentrator module shown in Fig. 1～3, this assembly is a box-structure that is formed by compound eye type lens light gathering device 5 and circuit board 6 encapsulation that multi-disc photovoltaic cell wafer is installed, described compound eye type lens light gathering device 5 has the collector lens 1 of polylith planar array, these collector lenses 1 are corresponding with described each photovoltaic cell wafer respectively, described each photovoltaic cell wafer all is the battery units 10 that formed by the back contact silicon solar cell cutting, and these battery units 10 are packaged on the described circuit board 6 by SMT.

The utility model is preferentially selected the back side point contact solar cell A-300 of U.S. Sunpower company for use.The utility model is being applied to surface mounting technology in the process of photovoltaic cell wafer package, thereby the way that has adopted the battery unit 10 that back contact silicon solar cell is cut into has overcome the difficulty of surface mounting technology in migrating, realization is encapsulated on the circuit board the automation of multi-disc photovoltaic cell wafer, has improved production efficiency.

Wherein, collector lens 1 Pasting of the polylith planar array of compound eye type lens light gathering device 5 on a transparent glass plate so that a box-structure that is packaged into circuit board 6.Certainly, these collector lenses 1 also can be one-body molded with this glass plate.

The utility model improves the structure of compound eye type lens light gathering device 5, is intended to make each collector lens 1 to carry out that light spot energy distributes more even behind the optically focused.Specifically shown in Fig. 4～6:

It is the rotation convex surface 101 and the transverse plane 102 relative with this rotation convex surface 101 of rotating shaft that each collector lens 1 has with its optical axis 103, this rotation convex surface 101 and any one intersection by the longitudinal section 2 of this optical axis 103 are the curve 104 that forms projection straight line on the receiving plane 4 that can make these longitudinal section 2 upper edge lens radial distribution and the incident ray 3 parallel with optical axis be refracted to corresponding photovoltaic cell wafer, this curve 104 is reflected on its longitudinal section, place 2 and is that curvilinear equation in the plane coordinate system of origin of coordinates A is with the central point of described transverse plane 102:

$(h+y)\frac{n\frac{\frac{\mathrm{dy}}{\mathrm{dx}}}{\sqrt{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}-\frac{\mathrm{dy}}{\mathrm{dx}}\sqrt{1-n^2\frac{{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}}{\sqrt{1-n^2\frac{{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}+n\sqrt{\frac{{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}}=(1+\frac{b}{a})x$

Wherein, coefficient h is the air line distance between described transverse plane 102 and the receiving plane 4; Coefficient a is the radius of described lens; Coefficient b is half length of described projection straight line; Coefficient n is the index of refraction in lens; Variable x is the lateral separation between described curve 104 any 1 B and the optical axis 103, and variable y is the fore-and-aft distance between this B and the transverse plane 102.

The acquisition of this curvilinear equation recognizes based on the applicant is creationary, and one that make that light spot energy is evenly distributed behind the optically focused than good method, is that the rotation convex surface 101 of scioptics is compressed to the light equal proportion on the receiving plane 4.That is to say, after incident ray 3 is refracted on the receiving plane 4 through any 1 B on the described curve 104, this B at the abscissa x on the curvilinear equation and the subpoint on the receiving plane apart from the ratio between the horizontal spacing m of lens axis 103, should equal the radius a of described lens and the partly ratio between the long b, the i.e. x/m=a/b of described projection straight line.According to known lens law of refraction and in conjunction with top equation, can obtain a following set of equations:

x/m＝a/b-----------------------------------------------------(1)

sin(θ)＝nsin(β)--------------------------(2)

x-m＝(h-y)tan(β-θ)-----------------------(3)

$\tan \left(\mathrm{\θ}\right)=\frac{\mathrm{dy}}{\mathrm{dx}}---\left(4\right)$

Incidence angle size and refraction angle size when wherein, variable " θ " and " β " represent light through described curve respectively.The implication of all the other coefficients and variable is all explained in the above.On the basis of above-mentioned equation group, can obtain above-mentioned curvilinear equation through mathematical derivation.

As shown in Figure 5, the periphery of each collector lens 1 is cut into the polygonized structure with at least three cylinders 105; Bonding between any adjacent collector lens 1 in this compound eye type lens light gathering device by the relative cylinder 105 of two lens.Obviously, the periphery of each collector lens 1 is cut into the purpose of the polygonized structure with at least three cylinders 105, be for convenience be planar array with being bonded together each collector lens 1 that makes in the compound eye type lens light gathering device between the adjacent collector lens 1.

Concrete, the periphery of each collector lens 1 is cut into the quadrilateral structure with four cylinders 105, and is wherein vertical mutually between the adjacent cylindrical 105; Bonding and then make each collector lens 1 rectangular array in this compound eye type lens light gathering device between any adjacent collector lens 1 in this compound eye type lens light gathering device by the relative cylinder of two lens 105.Obviously, the periphery of each collector lens 1 is cut into the quadrilateral structure with four cylinders 105, and orthogonal purpose between the adjacent cylindrical 105, be each the collector lens 1 rectangular array that makes in this compound eye type lens light gathering device.The benefit that the periphery of collector lens 1 is cut into quadrilateral structure also is, the shape of hot spot also is a quadrilateral structure behind the optically focused, therefore each battery unit 10 also can be made quadrilateral structure accordingly, can either save material like this when carrying out the battery cutting again can be so that processing.

Now light spot energy distributing homogeneity behind employed collector lens 1 and the common spherical convex lens optically focused in the utility model compound eye type lens light gathering device 5 is compared.Distribute for light spot energy behind the common spherical convex lens optically focused, as shown in Figure 7, the brightness of spot center is the highest, and its peripheral brightness reduces suddenly; Being reflected on the curve chart shown in Figure 7 is the waveform of lifting suddenly.Fig. 7 illustrates the centre of concentration of energy at hot spot, and the visible energy distributed pole is inhomogeneous.Distribute for light spot energy behind employed collector lens 1 optically focused in the utility model compound eye type lens light gathering device 5, as shown in Figure 8, the brightness unanimity of rectangular light spot, be reflected in and be approximately one " saddle " shape on the curve chart shown in Figure 8, illustrate that each point energy on the hot spot all is positioned at the crest location of " saddle " deltoid, visible energy is evenly distributed.

In addition, by the light penetration test, the transmitance of finding collector lens 1 of the present utility model is up to 90%～93%, and the transmitance of Fresnel Lenses is about 75%, proves that collector lens 1 of the present utility model also has good transmitance.

The applicant also need to prove, when carrying out above-mentioned contrast, the incident gross energy of the light of two tests adjusted consistently, and guaranteed that the spot size on the receiving plane is equal substantially.For curve chart shown in Figure 8, its crest location is not very level and smooth, has up and down fluctuation within the specific limits, mainly due to this test simulation be solar spectrum, light ray energy itself is not very even causing just.

The utility model also provides a kind of improvement structure of circuit board 6, is intended to improve the heat dispersion of circuit board 6 and reduces distortion in the use of whole compound eye type photovoltaic concentrator module.Concrete as Fig. 3, described circuit board 6 is by glass substrate 601 and the lamination layer structure that constituted attached to the metal level 602 on these glass substrate 601 surfaces; Form the pin line 603 corresponding and each battery unit 10 utilized the conducting surface 605,606 that the metal level 602 that is connected with pin line 603 is exported the electric current of generation on the described metal level 602 with each battery unit 10 by etching.Described pin line 603 and conducting surface 605,606 all form by etch insulated part 604 backs on metal level 602.

Metal level 602 is not only as the conduct electrical energy passage but also owing to it has better radiating effect for the bigger conducting surface of area; Glass substrate 601 is glass material and has rerum natura matching preferably with compound eye type lens light gathering device 5 simultaneously, has reduced the distortion in the use of whole compound eye type photovoltaic concentrator module.

Concrete, described each battery unit 10 is the planar rectangular array on circuit board 6; Conducting surface with every capable battery unit 10 staggered metal levels 602 formation, each battery unit 10 in every capable battery unit 10 is connected in parallel on the conducting surface that is positioned at these row battery unit 10 both sides by the pin line 603 of correspondence, contacts by the conducting surface 605 between these adjacent two row battery units 10 between the adjacent two row battery units 10; Be positioned at the most up and the most descending conducting surface 606 and be the conduction output face.In addition, described metal level 602 is by constituting attached to the copper coating on described glass substrate 601 surfaces and attached to the coat of metal on described copper coating surface.Coat of metal can be heavy tin layer, also might be other some materials, and its effect mainly is the protection copper coating, and is convenient to mounting battery unit 10.

In addition, as shown in Figure 1, a box-structure described compound eye type lens light gathering device 5 and circuit board 6 being packaged into by the fluid sealant 9 that is arranged on the frame 8 between compound eye type lens light gathering device 5 and the circuit board 6 and be used for described frame 8 and this compound eye type lens light gathering device 5 and circuit board 6 are bonded as one of compound eye type photovoltaic concentrator module of the present utility model.Wherein, described frame 8 is made of the metal isolating strip of hollow and the drier 7 that is positioned at its cavity.It is reliable that this structure has encapsulation, the advantage of good airproof performance, and can adopt the packaging technology of existing double glazing to carry out automated production.

Compound eye type photovoltaic concentrator module of the present utility model adopts following manufacturing process: a plurality of battery units 10 that back contact silicon solar cell is cut at first; Then these battery units 10 are packaged on the circuit board 6 by SMT; The box-structure that described circuit board 6 and the compound eye type lens light gathering device of having made 5 are packaged at last.

Claims (9)

1. compound eye type photovoltaic concentrator module, this assembly is by compound eye type lens light gathering device (5) and the box-structure that circuit board (6) encapsulation of multi-disc photovoltaic cell wafer forms is installed, described compound eye type lens light gathering device (5) has the collector lens (1) of polylith planar array, these collector lenses (1) are corresponding with described each photovoltaic cell wafer respectively, it is characterized in that: described each photovoltaic cell wafer all is the battery units (10) that formed by the back contact silicon solar cell cutting, and these battery units (10) are packaged on the described circuit board (6) by SMT.

2. compound eye type photovoltaic concentrator module as claimed in claim 1, it is characterized in that: it is the rotation convex surface (101) of rotating shaft and the transverse plane (102) relative with this rotation convex surface (101) that described each collector lens (1) has with its optical axis (103), this rotation convex surface (101) and the intersection of any one longitudinal section by this optical axis (103) (2) are that a receiving plane (4) that can make this longitudinal section (2) upper edge lens radial distribution and the incident ray (3) parallel with optical axis (103) be refracted to corresponding photovoltaic cell wafer is gone up the curve (104) that forms projection straight line, this curve (104) is reflected in that its longitudinal section, place (2) is gone up and is that curvilinear equation in the plane coordinate system of the origin of coordinates (A) is with the central point of described transverse plane (102):

$(h+y)\frac{n\frac{\frac{\mathrm{dy}}{\mathrm{dx}}}{\sqrt{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}-\frac{\mathrm{dy}}{\mathrm{dx}}\sqrt{1-n^2\frac{{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}}{\sqrt{1-n^2\frac{{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}+n\sqrt{\frac{{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}{1+{\left(\frac{\mathrm{dy}}{\mathrm{dx}}\right)}^2}}}=(1+\frac{b}{a})x$

Wherein, coefficient h is the air line distance between described transverse plane (102) and the receiving plane (4); Coefficient a is the radius of described lens; Coefficient b is half length of described projection straight line; Coefficient n is the index of refraction in lens; Variable x is described curve (104) lateral separation between (B) and the optical axis (103) more arbitrarily, and variable y is the fore-and-aft distance between this point (B) and the transverse plane (102).

3. compound eye type photovoltaic concentrator module as claimed in claim 2 is characterized in that: the periphery of each collector lens (1) is cut into the polygonized structure with at least three cylinders (105); Bonding between any adjacent collector lens (1) in this compound eye type lens light gathering device (5) by the relative cylinder (105) of two lens.

4. compound eye type photovoltaic concentrator module as claimed in claim 3 is characterized in that: the periphery of each collector lens (1) is cut into the quadrilateral structure with four cylinders (105), and is wherein vertical mutually between the adjacent cylindrical (105); Bonding and then make the rectangular array of each collector lens (1) in this compound eye type lens light gathering device between any adjacent collector lens (1) in this compound eye type lens light gathering device (5) by the relative cylinder of two lens (105).

5. as claim 1,2,3 or 4 described compound eye type photovoltaic concentrator modules, it is characterized in that: described circuit board (6) is by glass substrate (601) and the lamination layer structure that constituted attached to the metal level (602) on this glass substrate (601) surface; The conducting surface (605,606) that the metal level (602) that described metal level (602) upward forms the pin line (603) corresponding with each battery unit (10) by etching and each battery unit (10) utilization is connected with pin line (603) is exported the electric current that produces.

6. compound eye type photovoltaic concentrator module as claimed in claim 5 is characterized in that: described each battery unit (10) is the planar rectangular array on circuit board (6); Conducting surface with the staggered metal level of every capable battery unit (10) (602) formation, each battery unit (10) in every capable battery unit (10) is connected in parallel on the conducting surface that is positioned at these row battery unit (10) both sides by corresponding pin line (603), contacts by the conducting surface (605) that is positioned between these adjacent two row battery units (10) between the adjacent two row battery units (10); Be positioned at the most up and the most descending conducting surface (606) and be the conduction output face.

7. compound eye type photovoltaic concentrator module as claimed in claim 5 is characterized in that: described metal level (602) is by constituting attached to the copper coating on described glass substrate (601) surface and attached to the coat of metal on described copper coating surface.

8. as claim 1,2,3 or 4 described compound eye type photovoltaic concentrator modules, it is characterized in that: by a box-structure that is arranged on the frame (8) between compound eye type lens light gathering device (5) and the circuit board (6) and is used for the fluid sealant (9) that described frame (8) and this compound eye type lens light gathering device (5) and circuit board (6) are bonded as one is packaged into described compound eye type lens light gathering device (5) and circuit board (6).

9. compound eye type photovoltaic concentrator module as claimed in claim 8 is characterized in that: described frame (8) is by the metal isolating strip of hollow and drier (7) formation that is positioned at its cavity.

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