CN210837788U - Reflection of light solder strip and photovoltaic module - Google Patents
Reflection of light solder strip and photovoltaic module Download PDFInfo
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- CN210837788U CN210837788U CN201922116125.1U CN201922116125U CN210837788U CN 210837788 U CN210837788 U CN 210837788U CN 201922116125 U CN201922116125 U CN 201922116125U CN 210837788 U CN210837788 U CN 210837788U
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- 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
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- 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
- Y02E10/52—PV systems with concentrators
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Abstract
The utility model provides a reflecting solder strip and a photovoltaic module, which belong to the technical field of photovoltaic modules and are used for welding two adjacent battery pieces, wherein the reflecting solder strip comprises a base band and a coating on the surface of the base band; the baseband comprises a first segment and a second segment; the first section is provided with a first reflecting surface for reflecting sunlight and a lower plane welded with the top surface of one cell piece, and the second section is provided with a second reflecting surface for reflecting sunlight and an upper plane welded with the bottom surface of the other cell piece. The utility model relates to a reflection of light solder strip and photovoltaic module's reflection of light solder strip cross-section is the pentagon, and the court of the plain noodles of sun is two reflection of light faces, and when the level was placed, specific angle is personally submitted with the level to these two reflection of light faces, and light is after shining two reflection of light faces, and its reverberation can direct reflection return battery surface, or takes place the total reflection at the glass-air interface of subassembly, reflects back battery surface again and is recycled by the battery, increases the photoproduction electric current of battery, promotes the output of subassembly.
Description
Technical Field
The utility model belongs to the technical field of photovoltaic module, more specifically say, relate to a reflection of light solder strip and photovoltaic module.
Background
Double-sided photovoltaic cells: the photovoltaic cell is a photovoltaic cell with the front surface and the back surface capable of receiving illumination to generate current and voltage. The welding strip is welded with the main grid of the battery, the welding strip has the function of collecting and transmitting current, but the welding strip has certain length and width, the welding strip can form about 3% of area shielding on the surface of the battery after being welded with the main grid of the battery, and how to convert shielding loss into effective power output is a problem which is always researched in the industry. The double-sided photovoltaic cell can be manufactured into a double-sided power generation assembly, is more and more widely applied in the industry, and how to optimize the light path design of the front side and the back side of the assembly is also a problem to be solved urgently in the industry.
The high-efficiency reflective welding strip designed in the prior art is generally a multi-groove reflective welding strip and is only suitable for a single-side power generation battery. The welding strip is generally a hot-dip reflective welding strip, the reflective welding strip comprises a copper base and a coating arranged on the surface of the copper base, an intermittent design is adopted, one surface of the welding strip consists of an indentation surface and a non-indentation surface, only part of the surface in the length direction of the whole welding strip is the indentation surface, the other part is the non-indentation surface, the indentation surface and the non-indentation surface are arranged at intervals, when the welding strip is welded, the indentation surface can be used as the reflective surface of the welding strip, the non-indentation surface is used as the non-reflective surface of the welding strip, and the non-indentation surface is welded with the welding strip, the technology has the defect that the indentation surface with the reflective effect is only arranged on one surface, so the welding strip is only suitable for single-sided batteries; secondly, the indentation face generally sets up many reflective troughs, and in fact, reflective trough's apex angle design is subject to machining precision, and the tooth point position and the tank bottom position of indentation have the radian, and the existence of radian can reduce effectual reflection of light area.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reflection of light welds area and photovoltaic module aims at solving present reflection of light and welds area and can only be used for single face battery and the not good technical problem of reflection of light effect.
In order to achieve the above object, the utility model adopts the following technical scheme: providing a reflective welding strip for welding two adjacent battery pieces, wherein the reflective welding strip comprises a base strip and a coating arranged on the surface of the base strip; the baseband comprises a first segment and a second segment connected with the first segment;
the first section is provided with a first light reflecting surface for reflecting sunlight and a lower plane for being welded with the top surface of one cell piece, the second section is provided with a second light reflecting surface for reflecting the sunlight and an upper plane for being welded with the bottom surface of the other cell piece, and the first light reflecting surface and the second light reflecting surface are used for directly or indirectly reflecting the sunlight onto the cell piece.
As another embodiment of this application, the first section is a regular pentagonal prism, the second section is an inverted regular pentagonal prism, the first light-reflecting surface has two, and is respectively two top surfaces of the regular pentagonal prism, the second light-reflecting surface has two, and is respectively two bottom surfaces of the inverted regular pentagonal prism.
As another embodiment of the present application, the coating thickness of the first light reflecting surface and the second light reflecting surface is less than 5 μm, and the coating thickness of the lower plane and the upper plane is 15 μm to 25 μm.
As another embodiment of this application, two first reflection of light face and two contained angle between the second reflection of light face is the apex angle, the angle of apex angle is obtuse angle or acute angle.
As another embodiment of the present application, when the angle of the top corner is an obtuse angle, the angle ranges from 120 degrees to 130 degrees; when the angle of the top angle is acute, the angle range is less than 88 degrees.
As another embodiment of the present application, the material of the base band is selected from one of pure copper, copper-silver alloy, copper-aluminum alloy, copper-nickel, and high-copper alloy.
As another embodiment of the present application, the material of the coating layer is selected from one of tin-lead alloy, pure tin, pure silver, tin-bismuth alloy, tin-silver alloy, and tin-nickel alloy.
As another embodiment of the present application, a mark point is disposed at a start point of the first segment and an end point of the second segment, and the mark point is marked by using infrared laser or mechanical marking.
As another embodiment of the present application, the width of the mark point is the same as the width of the reflective solder strip, and the length of the mark point is 2 mm.
Another object of the present application is to provide a photovoltaic module, comprising a plurality of photovoltaic cells, wherein the photovoltaic cells comprise a plurality of parallel sets of the reflective solder strips; the photovoltaic module is a double-glass module or a single-glass transparent backboard module, and the other purpose of the application is to provide a photovoltaic module which comprises a plurality of photovoltaic cell pieces, wherein the photovoltaic cell pieces comprise a plurality of groups of parallel light-reflecting welding strips of any one of the above parts; the photovoltaic module is a double-glass assembly or a single-glass transparent backboard assembly.
The utility model provides a pair of reflection of light solder strip and photovoltaic module's beneficial effect lies in: compared with the prior art, the utility model relates to a reflection of light welds area and photovoltaic module's welding area cross-section is the pentagon, the surface of being in the sun is two reflection of light faces, when the level was placed, specific angle is personally submitted with the level to these two reflection of light faces, light is after shining two reflection of light faces, its reverberation can direct reflection return battery surface, or take place the total reflection at the glass-air interface of subassembly, reflect back the battery surface again and be recycled by the battery, realize the inside light path optimization of subassembly, increase the photoproduction electric current of battery, promote the output of subassembly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a baseband according to an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic sectional view taken along line I-I in FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line II-II of FIG. 1;
fig. 5 is a schematic structural view of a reflective welding strip according to an embodiment of the present invention;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a bottom view of FIG. 5;
FIG. 8 is a first schematic sectional view taken along line III-III in FIG. 5;
FIG. 9 is a first schematic sectional view taken along line IV-IV of FIG. 5;
fig. 10 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view taken along line V-V in FIG. 10;
fig. 12 is a first diagram illustrating a light reflection principle of a photovoltaic module according to an embodiment of the present invention;
fig. 13 is a light reflection principle structure diagram ii of a photovoltaic module according to an embodiment of the present invention;
fig. 14 is a schematic diagram illustrating a method for manufacturing a reflective welding strip according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a pressing roller used in a manufacturing method of a reflective welding strip according to an embodiment of the present invention.
In the figure: 100. a reflective solder strip; 101. a first segment; 102. a second section; 110. a first light-reflecting surface; 120. a second light-reflecting surface; 130. a first connection face; 140. a second connection face; 150. an upper plane; 160. a lower plane; 170. a baseband; 180. coating; 190. a vertex angle; 200. a first cell piece; 300. a second cell piece; 400. marking points; 500. an upper compression roller; 600. a lower pressing roller; 700. a first trench; 800. a second trench.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to fig. 13, a description will now be given of a reflective welding strip according to the present invention. A kind of reflecting welding strip, is used for welding with two adjacent battery plates, reflecting welding strip 100 includes the base band 170 and sets up the coating 180 on the surface of base band 170; the baseband 170 includes a first segment 101 and a second segment 102 connected to the first segment 101; the first segment 101 has a first light reflecting surface 110 for reflecting sunlight and a lower plane 160 for welding with the top surface of one cell, the second segment 102 has a second light reflecting surface 120 for reflecting sunlight and an upper plane 150 for welding with the bottom surface of another cell, and the first light reflecting surface 110 and the second light reflecting surface 120 are used for reflecting sunlight directly or indirectly to the cells.
The utility model discloses a reflection of light welds area 100 includes baseband 170 and sets up coating 180 on baseband 170 surface, baseband 170 includes the same first segmentation 101 and the second segmentation 102 of length, two adjacent battery pieces are two adjacent battery pieces when the battery piece series welding respectively, be first battery piece 200 and second battery piece 300 respectively, first segmentation 101 links to each other with second segmentation 102, first segmentation 101 has two first reflection of light faces 110 that are used for reflecting the sunlight and is used for with first battery piece 200 front welded lower plane 160, second segmentation 102 has two second reflection of light faces 120 that reflect the sunlight and is used for with second battery piece 300 back welded upper plane 150; the lower plane 160 of the first segment 101 is welded to the front surface of the first battery piece 200, and the upper plane of the second segment 102 is welded to the back surface of the second battery piece 300.
After light irradiates the two first reflecting surfaces 110 of the first segment 101 and the two second reflecting surfaces 120 of the second segment 102 of the reflective welding strip 100, the reflected light can be directly reflected back to the surface of the battery or totally reflected at the glass-air interface of the assembly and then reflected back to the surface of the battery again to be reused by the battery, so that the utilization rate of incident light is increased, more electron-hole pairs are excited on the surface of the battery, and the power of the assembly is improved by improving short-circuit current; the upper plane 150 and the lower plane 160 which are welded with the main grid are both planes, so that the welding strength of the reflective welding strip 100 and the main grid can be ensured; secondly, the reflection welding strip 100 has a period length, and the sections of the front main grid part of the welding battery and the back main grid part of the welding battery are designed symmetrically, so that the same reflection effect can be achieved between the back welding strip of the battery and the front welding strip of the battery after welding.
The utility model provides a pair of area is welded in reflection of light beneficial effect lies in: compared with the prior art, the utility model relates to a reflection of light welds cross-section of area is the pentagon, towards the sunshine face be two reflection of light faces, when the level was placed, specific angle is personally submitted with the level to these two reflection of light faces, light is after shining two reflection of light faces, its reverberation can the direct reflection return battery surface, or take place the total reflection at the glass-air interface of subassembly, reflect back battery surface again and be recycled by the battery, realize the optimization of subassembly internal light path, increase the photoproduction electric current at the positive and back of battery, promote the output of subassembly.
As a specific implementation manner of the utility model provides a pair of reflection of light welds area, please refer to fig. 1 to fig. 13, first segmentation 101 is positive five diamond columns, and second segmentation 102 is the positive five diamond columns of handstand, and first reflection of light face 110 has two, is two top surfaces of positive five diamond columns respectively, first reflection of light face 110 through first connecting face 130 with lower plane 160 links to each other, and second reflection of light face 120 has two, is two bottom surfaces of the positive five diamond columns of handstand respectively, second reflection of light face 120 through the second connecting face 140 with go up plane 150 and link to each other.
In this embodiment, the reflective welding strip 100 is designed as a pentagonal prism, the first section 101 is a regular pentagonal prism with a regular pentagonal cross section, and the second section 102 is an inverted regular pentagonal prism with an inverted pentagonal cross section; the first segment 101 and the second segment 102 are a first reflecting surface 110 and a second reflecting surface 120 facing the sunlight surface, when the reflective welding strip 100 is welded on a battery piece and placed horizontally, the first reflecting surface 110 and the second reflecting surface 120 form a specific angle with the horizontal plane, after light irradiates the first reflecting surface 110 and the second reflecting surface 120, the reflected light can be reflected back to the surface of the battery to be reused by the battery, so that the incident light can be directly reflected to the surface of the battery or totally reflected at a glass-air interface, the utilization rate of the incident light is increased, more electron-hole pairs are excited on the surface of the battery, and the power of the assembly is improved by improving short-circuit current; the upper plane 150 and the lower plane 160 welded to the main grid are both planes, which can ensure the welding strength between the welding strip and the main grid, and the reflective welding strip has a period length, and the sections of the main grid part of the front side of the welding battery and the main grid part of the back side of the welding battery are symmetrically designed, so that the reflective welding strip 100 on the back side of the battery and the reflective welding strip 100 on the front side of the battery have the same reflective effect after welding.
As a specific embodiment of the reflective welding strip of the present invention, please refer to fig. 1 to 13, the first reflective surface 110 is connected to the lower plane 160 through the first connecting surface 130, and the second reflective surface 120 is connected to the upper plane 150 through the second connecting surface 140.
In this embodiment, the first connection surface 130 and the second connection surface 140 reduce the area of the bottom surfaces of the lower plane 160 and the upper plane 150, thereby increasing the utilization rate of the photovoltaic cell.
As a specific embodiment of the reflective welding strip provided by the present invention, please refer to fig. 1 to 13, the thickness of the coating 180 of the first reflective surface 110 and the second reflective surface 120 is less than 5 μm, and the thickness of the coating 180 of the lower plane 160 and the upper plane 150 is 15 μm to 25 μm; the first and second connection faces 130 and 140 and the lower and upper planes 160 and 150 are lands, and the thickness of the coating 180 of the first and second connection faces 130 and 140 is also 15 μm to 25 μm.
In the embodiment, the coating 180 is a tin layer, the base band 170 is subjected to sectional tin plating in the tin plating process on the surface after being manufactured, the thicknesses of the tin layers of the first reflecting surface 110 and the second reflecting surface 120 are controlled within 5 micrometers in five surfaces of the pentagonal prism reflective welding band 100, the triangular morphology is prevented from being damaged in the tin melting process due to the fact that the tin layer is too thick, the thicknesses of the tin layers of the other three surfaces need to meet the welding requirement, and the thickness range is 20 micrometers +/-5 micrometers; according to the shape design of the copper strip and the thickness design of tin layers on different surfaces, the final finished product of the welding strip is designed to be a period length, the period size of the welding strip corresponds to that of the pentagonal copper strip, and the welding strip with one period length comprises the pentagonal prism-shaped copper strip with two symmetrical ends.
As a specific embodiment of the reflective welding strip provided by the present invention, please refer to fig. 3 and 13, an included angle between the first reflective surface 110 and the second reflective surface 120 is a vertex angle 190, and the vertex angle is denoted by γ, i.e., an included angle between two first reflective surfaces 110 or two second reflective surfaces 120 is γ, an angle of γ is an obtuse angle or an acute angle, and when the angle of γ is an obtuse angle, the angle range is 120 ° -130 °; when the angle of gamma is an acute angle, the angle range is less than 88 degrees; the design range of the gamma angle is more than or equal to 120 degrees and less than or equal to 130 degrees or less than 88 degrees.
As a specific embodiment of the reflective welding strip provided by the present invention, please refer to fig. 1 to 13, the base strip 170 is made of one of pure copper, copper-silver alloy, copper-aluminum alloy, copper-nickel, and high-copper alloy; the coating 180 is made of one of tin-lead alloy, pure tin, pure silver, tin-bismuth alloy, tin-silver alloy and tin-nickel alloy.
As a specific embodiment of the reflective welding strip provided in the present invention, please refer to fig. 6 and 7, a mark point 400 is disposed at the starting point of the first segment 101 and the ending point of the second segment 102, and the mark point 400 uses infrared laser marking or mechanical marking.
In this embodiment, in the actual welding process, in order to effectively calibrate the periodic position of the reflective welding strip 100 by the welding device and avoid the position of the reflective welding strip 100 on the battery piece from being displaced due to the error accumulation of the period length in the welding process, the mark points 400 need to be designed on the reflective welding strip 100, and the function of the mark points is to calibrate the position of the reflective welding strip when the welding device stretches and cuts the reflective welding strip 100 every time, so as to avoid the displacement of the reflective welding strip 100 on the battery piece. The marking point 400 can be marked by an infrared laser process, and can also be marked by punching by using a punching die.
As a specific embodiment of the reflective welding strip provided by the present invention, please refer to fig. 6 and 7, the width of the mark point 400 is the same as the width of the reflective welding strip 100, and the length of the mark point 400 is not greater than 2 mm; the width of the mark point 400 is equal to the width of the reflective welding strip 100, and the length is less than or equal to 2 mm.
Referring to fig. 10 to fig. 13, a photovoltaic module according to the present invention will now be described. A photovoltaic module comprises a plurality of photovoltaic cells, each photovoltaic cell comprises a plurality of parallel groups of the reflective solder strips 100; the photovoltaic assembly is a double-glass assembly or a single-glass transparent back plate assembly; the reflection welding strip 100 is applied to a double-sided photovoltaic cell, the shapes of the part welded with the front side of the cell and the part welded with the back side of the cell are designed symmetrically, and the multiplexing of double-sided incident light rays can be realized at the same time; in addition, the upper plane 150 or the lower plane 160 of the reflective welding strip 100 as a plane can be directly welded with the electrode of the battery, and the welding strength of the contact surface can be better ensured through the surface-to-surface contact.
The utility model provides a pair of photovoltaic module's beneficial effect lies in: compared with the prior art, the utility model relates to a photovoltaic module's area of welding is for the area of welding of reflecting light, the area of welding of reflecting light is the pentagon body, be two reflection of light faces towards the plain noodles, when the level was placed, specific angle is personally submitted with the level to these two reflection of light faces, light shines behind two reflection of light faces, its reverberation can direct reflection return battery surface, or take place the total reflection at the glass-air interface of subassembly, the battery surface is recycled by the battery again to the reflexion, realize the inside light path of subassembly and optimize, increase the photoproduction electric current at the positive and back of battery, promote the output of subassembly.
Referring to fig. 14 and 15, the present invention also provides a method for manufacturing a reflective welding strip. A preparation method of a reflective welding strip comprises the following steps:
obtaining an initial strip-shaped base band 170;
rolling the surface of the initial base band 170 to make the initial base band 170 into a rolled base band 170 with a plurality of first sections 101 and a plurality of second sections 102 distributed in a staggered manner;
cutting and rolling the base band 170 to obtain a plurality of base bands 170;
the surface of the base tape 170 is subjected to tin plating treatment by a tin plating process.
When the base band 170 needs to be rolled, firstly, a strip-shaped initial base band 170 is obtained, the surface of the initial base band 170 is rolled, the initial base band 170 is rolled into a rolled base band 170 with a plurality of first sections 101 and a plurality of second sections 102 which are distributed in a staggered mode, then the rolled base band 170 is cut to obtain a plurality of base bands, and then the surface of the base band 170 is tinned through a tinning process, or the rolled base band 170 is tinned through the tinning process and then cut.
It should be noted here that the tin plating process of the solder strip adopts a sectional tin plating process, the tin layer thickness of the solder strip corresponding to the light receiving surfaces, i.e., the first reflective surface 110 and the second reflective surface 120, is controlled within 5 μm, so as to ensure that the solder strip will not damage the angle of the solder strip during the tin melting process, and the tin layer thickness of the solder strip corresponding to the solder surfaces, i.e., the first connecting surface 130, the second connecting surface 140, the lower plane 160 and the upper plane 150, is controlled within 20 μm ± 5 μm, so as to ensure the reliability of the solder strip and the solder joint of the battery.
The utility model provides a pair of preparation method of area is welded in reflection of light's beneficial effect lies in: compared with the prior art, the preparation method of the reflective welding strip of the utility model rolls the surface of the base strip into two sections with the same length and the sections of regular pentagon and inverted pentagon respectively; then carrying out tin plating treatment on the surface of the base band by a tin plating process; the method is simple and low in cost, the cross section of the light-reflecting welding strip is pentagonal, the two light-reflecting surfaces facing the sunlight surface form a specific angle with the horizontal plane when the light-reflecting welding strip is horizontally placed, the reflected light of the light-reflecting welding strip can be directly reflected back to the surface of the battery after the light irradiates the two light-reflecting surfaces, or the reflected light is totally reflected at the glass-air interface of the assembly and is reflected back to the surface of the battery again to be reused by the battery, the optimization of the optical path inside the assembly is realized, the photoproduction current of the front surface and the back surface of the battery is increased, and the.
As a specific implementation manner of the preparation method of the reflective welding strip provided by the present invention, please refer to fig. 14 and 15, the performance of the initial baseband 170 is rolled by using a compression roller device, the compression roller device includes a frame, an upper compression roller 500, a lower compression roller 600 and a driver for driving the upper compression roller 500 and the lower compression roller 600 to move, the upper compression roller 500 and the lower compression roller 600 are rotatably disposed on the frame, and the driver is mounted on the frame;
the circumference of the upper pressing roller 500 is provided with a first groove 700 for rolling the first light reflecting surface 110, the circumference of the lower pressing roller 600 is provided with a second groove 800 for rolling the second light reflecting surface 120, and the first groove 700 and the second groove 800 are staggered to roll and form different positions of the initial base band 170.
In this embodiment, the upper pressing roller 500 and the lower pressing roller 600 are both circular pressing roller molds, and two sections of morphology grooves are respectively designed on the circumferences of the upper pressing roller 500 and the lower pressing roller 600: the first groove 700 is an isosceles triangle groove, and the second groove 800 is an isosceles trapezoid groove; the lengths of the isosceles triangle grooves and the isosceles trapezoid grooves respectively account for half of the circumferences of the upper press roll 500 and the lower press roll 600; the vertex angle 190 of the isosceles triangle groove is designed to be more than or equal to 120 degrees and less than or equal to 130 degrees or less than 88 degrees, and the base angle of the isosceles trapezoid groove is consistent with the base angle design of the isosceles triangle groove; when the copper strip of initial baseband 170 is processed, same compression roller is used from top to bottom, the isosceles triangle grooves and the isosceles trapezoid grooves of upper compression roller 500 and lower compression roller 600 need to be staggered, the isosceles triangle groove segments of upper compression roller 500 correspond to the isosceles trapezoid groove segments of lower compression roller 600, the isosceles trapezoid groove segments of upper compression roller 500 correspond to the isosceles triangle groove segments of lower compression roller 600, thus, after the round copper wire as initial baseband 170 is extruded from top to bottom through two compression rollers, the finished product that comes out is two sections of symmetrical pentagonal cylindrical copper strips, the cross section of first segment 101 is regular pentagon, and the cross section of second segment 102 is inverted pentagon.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A reflective welding strip is used for welding two adjacent battery pieces and comprises a base strip and a coating arranged on the surface of the base strip; wherein the baseband comprises a first segment and a second segment connected to the first segment;
the first section is provided with a first light reflecting surface for reflecting sunlight and a lower plane for being welded with the top surface of one cell piece, the second section is provided with a second light reflecting surface for reflecting the sunlight and an upper plane for being welded with the bottom surface of the other cell piece, and the first light reflecting surface and the second light reflecting surface are used for directly or indirectly reflecting the sunlight onto the cell piece.
2. The reflectively welded tape of claim 1, wherein the first segment is a regular pentagonal prism, the second segment is an inverted regular pentagonal prism, the first light reflecting surface has two, and respectively the top surfaces of the regular pentagonal prism, and the second light reflecting surface has two, and respectively the bottom surfaces of the inverted regular pentagonal prism.
3. The reflectively welded ribbon of claim 2, wherein the first and second reflectively coated surfaces have a coating thickness of less than 5 μm, and the lower and upper flat surfaces have a coating thickness of 15 μm to 25 μm.
4. The reflectively welded ribbon of claim 3, wherein the angle between two first reflective surfaces and two second reflective surfaces is a vertex angle, and the angles of the vertex angles are both obtuse angles or acute angles.
5. The reflectively welded ribbon of claim 4, wherein the angle of the apex angle is obtuse, the angle being in the range of 120 ° -130 °; when the angle of the top angle is acute, the angle range is less than 88 degrees.
6. The reflectively welded strip of any of claims 1-5, wherein the base strip is made of one of pure copper, copper-silver alloy, copper-aluminum alloy, copper-nickel, and high-copper alloy.
7. The reflectively welded ribbon of claim 6, wherein the coating is made of one of tin-lead alloy, pure tin, pure silver, tin-bismuth alloy, tin-silver alloy, and tin-nickel alloy.
8. The reflectively welded ribbon of claim 7, wherein the starting point of the first segment and the ending point of the second segment are marked with marking points using infrared laser marking or mechanical marking.
9. The strip of claim 8, wherein the width of the marker is the same as the width of the strip, and the length of the marker is 2 mm.
10. A photovoltaic module comprising a plurality of photovoltaic cells, wherein the photovoltaic cells comprise a plurality of parallel sets of the reflective solder strips of any one of claims 1-9; the photovoltaic module is a double-glass assembly or a single-glass transparent backboard assembly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116125.1U CN210837788U (en) | 2019-11-29 | 2019-11-29 | Reflection of light solder strip and photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116125.1U CN210837788U (en) | 2019-11-29 | 2019-11-29 | Reflection of light solder strip and photovoltaic module |
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| CN210837788U true CN210837788U (en) | 2020-06-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113707738A (en) * | 2021-08-25 | 2021-11-26 | 上海晶科绿能企业管理有限公司 | Welding strip and battery piece assembly |
| CN115132877A (en) * | 2021-03-24 | 2022-09-30 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module, battery string and manufacturing method thereof |
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2019
- 2019-11-29 CN CN201922116125.1U patent/CN210837788U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115132877A (en) * | 2021-03-24 | 2022-09-30 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module, battery string and manufacturing method thereof |
| CN115132877B (en) * | 2021-03-24 | 2024-03-22 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module, battery string and manufacturing method thereof |
| CN113707738A (en) * | 2021-08-25 | 2021-11-26 | 上海晶科绿能企业管理有限公司 | Welding strip and battery piece assembly |
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