CN218946688U - Photovoltaic cell welding platform - Google Patents
Photovoltaic cell welding platform Download PDFInfo
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- CN218946688U CN218946688U CN202222402006.4U CN202222402006U CN218946688U CN 218946688 U CN218946688 U CN 218946688U CN 202222402006 U CN202222402006 U CN 202222402006U CN 218946688 U CN218946688 U CN 218946688U
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- 238000003466 welding Methods 0.000 title claims abstract description 126
- 238000001179 sorption measurement Methods 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000005476 soldering Methods 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims 9
- 230000000694 effects Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a photovoltaic cell welding platform which is used for welding wires on battery pieces, and comprises at least one bearing surface for bearing the battery pieces and the welding wires, a platform body connected with the bearing surface, and an adsorption mechanism for adsorbing the battery pieces and the welding wires; the platform body is arranged below the bearing surface; the side of the bearing surface facing the platform body is concaved downwards to form a concave cambered surface; and a heating mechanism for heating to realize welding of the welding wire and the battery piece is also arranged in the platform body. The problem of warping caused by different shrinkage of welding wires and battery pieces due to cooling after welding is solved by improving the concave cambered surface of the bearing surface, so that the chip rate of the battery pieces is effectively improved, the production yield is improved, the practicability is improved, and the manufacturing cost is reduced; the adsorption mechanism plays a role in adsorption, so that the battery piece and the welding wire are fully contacted in the welding process, and the welding effect is firmer; the heating mechanism has the function of heating and welding, so that the battery piece and the welding wire are heated and welded to form an integral structure.
Description
Technical Field
The utility model relates to the field of photovoltaic cells, in particular to a photovoltaic cell welding platform.
Background
Along with the increasing demand of people on the efficiency of the photovoltaic module, the back contact photovoltaic cell is attractive because the front surface of the back contact photovoltaic cell is not shielded by a grid line, the conversion efficiency is higher, and the back contact photovoltaic cell is attractive for more and more photovoltaic companies. At present, all electrodes of a back contact photovoltaic cell in the market are arranged on the back surface of the back contact photovoltaic cell, and a welding mode of single-sided welding on a horizontal plane heating platform is adopted by placing the back surface of the cell downwards. The battery piece and the welding wire are in a plane state which is horizontally placed before and during welding, after welding, the battery piece and the welding wire are heated to form an upward protruding arc, and because all grid lines of the back contact battery are arranged on the back surface of the battery piece and the welding wire are subjected to single-sided welding at a certain temperature, local stress concentration on the back surface after welding is easily caused, the warping on two sides of the battery piece is serious, so that the problems of increased chip rate, abnormal typesetting precision of a typesetter, broken pieces after lamination and the like are caused.
Disclosure of Invention
In view of the above, the utility model provides a photovoltaic cell welding platform, which improves the existing welding mode of a back contact cell and solves the problem of serious cell piece warpage in the welding process of the back contact cell.
The utility model provides a photovoltaic cell welding platform which is used for welding wires on battery pieces, and comprises at least one bearing surface for bearing the battery pieces and the welding wires, a platform body connected with the bearing surface, and an adsorption mechanism for adsorbing the battery pieces and the welding wires; the platform body is arranged below the bearing surface; the side of the bearing surface facing the platform body is concaved downwards to form a concave cambered surface; and a heating mechanism for heating to realize welding of the welding wire and the battery piece is also arranged in the platform body.
Optionally, the cambered surface curvature of the bearing surface is 1/2018mm -1 -1/325mm -1 。
Optionally, the depth of the bearing surface along the first direction is 3mm-10mm; the first direction is the direction from the bearing surface to the battery piece.
Optionally, the width of the bearing surface along the second direction is 160mm-220mm; the first direction is the direction pointing to the battery piece from the bearing surface, and the second direction is intersected with the first direction.
Optionally, the length of the receiving surface along the third direction is not less than 210mm, wherein the first direction is a direction from the receiving surface to the battery piece, and the third direction intersects with the first direction.
Optionally, the welding wire is located between the battery plate and the receiving surface.
Optionally, the adsorption mechanism includes a plurality of adsorption holes, and the adsorption hole is seted up on the holding surface, and a plurality of adsorption holes are in the inside UNICOM of platform body, and the surface of platform body is equipped with the air cock with a plurality of adsorption holes UNICOM.
Optionally, the plurality of adsorption holes are uniformly arranged along the second direction and the third direction; the first direction is the direction from the bearing surface to the battery piece, and the first direction, the second direction and the third direction are intersected in pairs.
Optionally, in a direction parallel to the welding platform, the projection area of the receiving surface is larger than the projection area of the battery piece.
Optionally, the heating mechanism is a heating wire, a resistance wire or a lamp tube.
Compared with the prior art, the photovoltaic cell welding platform provided by the utility model has the advantages that at least the following beneficial effects are realized:
the photovoltaic cell welding platform disclosed by the utility model has the advantages that the shape of the bearing surface is changed into the concave cambered surface, so that the warping problem caused by different shrinkage of welding wires and battery pieces due to cooling after welding can be counteracted, the fragment rate of the battery pieces can be effectively improved, the aim of improving the production yield is fulfilled, the practicability is improved, and meanwhile, the manufacturing cost is reduced; the adsorption mechanism plays a role in adsorption, so that the battery piece and the welding wire are fully contacted in the welding process, and the welding effect is firmer; the heating mechanism has the function of heating and welding, so that the battery piece and the welding wire are heated and welded to form an integral structure.
Of course, it is not necessary for any one product embodying the utility model to achieve all of the technical effects described above at the same time.
Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.
Fig. 1 is a schematic structural view of a battery piece, a welding wire and a welding platform provided in this embodiment;
fig. 2 is a schematic structural diagram of the photovoltaic cell according to the present embodiment;
fig. 3 is a schematic view of a state of a battery piece and a welding wire before welding according to the embodiment;
fig. 4 is a schematic view of a state of a battery piece and a welding wire during welding according to the embodiment;
fig. 5 is a schematic view of a battery piece and a welding wire after welding according to the present embodiment.
Detailed Description
Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In order to solve the above technical problems, the present utility model provides a photovoltaic cell soldering platform, which will be described in detail below.
Referring to fig. 1 to 5, fig. 1 is a schematic structural view of a battery piece, a welding wire and a welding platform according to the present embodiment; fig. 2 is a schematic structural diagram of the photovoltaic cell according to the present embodiment; fig. 3 is a schematic view of a state of a battery piece and a welding wire before welding according to the embodiment; fig. 4 is a schematic view of a state of a battery piece and a welding wire during welding according to the embodiment; fig. 5 is a schematic view of a state of a battery piece and a welding wire after welding according to the embodiment; the embodiment provides a photovoltaic cell welding platform, which is used for welding wires 2 on a cell piece 1, wherein the cell piece 1 is a back contact cell, all grid lines of the back contact cell are arranged on the back surface, the front surface is not shielded, the conversion efficiency is high, and the appearance is more excellent; the back of the battery piece 1 is placed on a welding platform to be heated, and single-sided welding is carried out; the welding platform comprises at least one bearing surface 3 for bearing the battery piece 1 and the welding wire 2, a platform body 4 connected with the bearing surface 3, and an adsorption mechanism 6 for adsorbing the battery piece 1 and the welding wire 2; the back grid line of the battery piece 1 is contacted with the bearing surfaces 3, and a plurality of welding wires 2 can be placed on each bearing surface 3; the platform body 4 is arranged below the bearing surface 3; the bearing surface 3 is concave downwards towards one side of the platform body 4 to form a concave cambered surface; a heating mechanism 5 for heating to realize the welding of the welding wire 2 and the battery piece 1 is also arranged in the platform body 4.
According to the welding platform, the shape of the bearing surface 3 for bearing the battery piece 1 and the welding wire 2 is improved, the bearing surface 3 is changed from a horizontal plane into a concave cambered surface, and the middle position of the back contact battery is positioned in the bottommost area of the concave cambered surface, so that heating welding is performed; because there is the difference in thermal expansion coefficient when welding between battery piece and the welding wire, this spill cambered surface can be greater than battery piece shrinkage that the welding wire shrinkage that the cooling led to after the welding offset to improve the hidden crack that serious production was warp to the battery, rupture piece, typesetter precision is difficult to guarantee scheduling problem, and then improve the yields of production, realize the purpose of reduce cost.
The welding platform is also provided with the adsorption mechanism 6, so that the adsorption effect can be achieved; the battery piece 1 and the welding wire 2 are placed on the bearing surface 3 together, and the battery piece 1 and the welding wire 2 can be closely attached to the bearing surface 3 after being adsorbed by the adsorption mechanism 6 of the welding platform, so that the position deviation of the battery piece 1 and the welding wire 2 in the welding process is avoided; meanwhile, the battery piece 1, the welding wire 2 and the bearing surface 3 can be fully contacted in the welding process, so that the welding effect of the battery piece 1 and the welding wire 2 is firmer.
The welding platform provided by the utility model is also provided with a heating mechanism 5, which has the function of heating and welding. The heating mechanism 5 provides heat for the battery piece 1 and the welding wire 2 through the bearing surface 3, so that the battery piece 1 and the welding wire 2 are heated and welded to form an integral structure.
With continued reference to FIG. 2, in some alternative embodiments, the arcuate curvature of the receiving surface 3 is 1/2018mm -1 -1/325mm -1 . Specifically, if the curvature of the cambered surface is smaller than 1/2018mm -1 Too small curvature does not play a role in improving the warpage of the battery piece and the welding wire after welding; if the curvature of the cambered surface is more than 1/325mm -1 The curvature is too large, so that the deformation of the battery piece 1 adsorbed and attached on the cambered surface is too large, and the battery piece 1 is further damaged in a hidden way. Therefore, the curvature of the cambered surface of the bearing surface 3 is 1/2018mm -1 -1/325mm -1 The problem of the warping degree of the battery piece 1 after the battery piece 1 and the welding wire 2 are welded is avoided. The cambered surface curvature of the bearing surface 3 can1/2018mm -1 、1/1900mm -1 、1/1400mm -1 、1/1000mm -1 、1/600mm -1 Or 1/325mm -1 。
With continued reference to fig. 2, in some alternative embodiments, the receiving surface 3 has a depth in the first direction Z of 3mm to 10mm; the first direction Z is a direction from the receiving surface 3 to the battery plate 1. Specifically, if the depth of the receiving surface 3 along the first direction Z is smaller than 3mm, the deformation of the battery piece is too small, and the effect of improving the warpage of the battery piece after welding cannot be achieved; if the depth of the receiving surface 3 in the first direction Z is greater than 10mm, the deformation of the battery piece is excessively large, and adverse effects such as hidden cracking and breaking are generated. Therefore, the depth of the bearing surface 3 along the first direction Z is 3mm-10mm, so that the problem of warping of the battery piece after welding can be solved, and the problem of hidden cracking caused by overlarge deformation of the battery piece is avoided. The depth of the receiving surface 3 in the first direction Z may be 3mm, 4mm, 6mm, 8mm, 9mm or 10mm.
With continued reference to fig. 2, in some alternative embodiments, the receiving surface 3 has a width in the second direction Y of 160mm-220mm; the first direction Z is a direction from the receiving surface 3 to the battery plate 1, and the second direction Y intersects with the first direction Z. Specifically, since the main current battery piece in the market at present has a size of 163.75mm, 182mm or 210mm, if the width of the receiving surface 3 along the second direction Y is smaller than 160mm, the width is too small to reach the width of the battery piece, and the battery piece cannot be completely attached to the receiving surface 3 everywhere, so that the practicability is not provided; if the width of the receiving surface 3 along the second direction Y is greater than 220mm, the width is too large, resulting in cost waste. Therefore, the width of the receiving surface 3 along the second direction Y is 160mm-220mm, so that the whole battery piece can be accommodated in the width, the practicability is improved, and the manufacturing cost is reduced. The width of the receiving surface 3 in the second direction Y may be 160mm, 170mm, 180mm, 190mm, 200mm, 210mm or 220mm.
With continued reference to fig. 2, in some alternative embodiments, the length of the receiving surface 3 along the third direction X is not less than 210mm, where the first direction Z is the direction from the receiving surface 3 to the battery piece 1, and the third direction X intersects the first direction Z. Specifically, since the maximum size of the mainstream battery piece in the market at present is 210mm×210mm, if the length of the receiving surface 3 along the third direction X is smaller than 210mm, the length of the battery piece placed on the receiving surface may not be reached, so that the welding platform may not be suitable for all battery pieces in the market; therefore, the length of the bearing surface 3 along the third direction X is not less than 210mm, so that the bearing surface can completely contain the battery piece in length, the welding effect is ensured, and the application range in the market is wide. The length of the receiving surface 3 along the third direction X is not particularly limited, and can be adjusted according to actual conditions. The length of the receiving surface 3 in the third direction X may be 210mm, 250mm, 280mm, 300mm or 350mm.
With continued reference to fig. 1 and 2, in some alternative embodiments, the adsorption mechanism 6 includes a plurality of adsorption holes 601, the adsorption holes 601 are formed on the receiving surface 3, the plurality of adsorption holes 601 are communicated with the interior of the platform body 4, and an outer surface of the platform body 4 is provided with air nozzles (not shown in the figures) that are communicated with the plurality of adsorption holes 601. The carrying surface 3 of the welding platform is provided with a plurality of adsorption holes 601, so that the welding platform can be fully attached and adsorbed with the back contact battery; each adsorption hole 601 is communicated with the inside of the platform body 4 and is connected with an external air source (not shown in the figure) through an air tap (not shown in the figure), so that negative pressure adsorption battery pieces can be generated.
With continued reference to fig. 1 and 2, in some alternative embodiments, the plurality of suction holes 601 are uniformly aligned along the second direction Y and the third direction X; the first direction Z is a direction from the receiving surface 3 to the battery piece 1, and the first direction Z, the second direction Y and the third direction X intersect each other two by two. The first direction Z, the second direction Y and the third direction X are perpendicular to each other. The adsorption holes 601 can be uniformly arranged on the carrying surface 3 in an array manner, so that the adsorption force applied to each part of the battery piece 1 is the same. In order to obtain better adsorption effect, the distribution of each adsorption hole 601 on the receiving surface 3 can be in a mode of sparse middle and dense edges, and the receiving surface 3 can better adsorb two sides of the battery piece 1, so that the edges of the battery piece 1 are bonded and not tilted.
With continued reference to fig. 1, in some alternative embodiments, the welding wire 2 is positioned between the battery plate 1 and the receiving surface 3. Because the battery piece 1 adopts a back contact battery, the welding wire 2 needs to be connected with the back surface of the battery piece 1, the welding wire 2 is directly placed on the bearing surface 3 and clamped between the bearing surface 3 and the battery piece 1, and the placing sequence is that the welding wire is firstly placed and then the battery piece is placed.
With continued reference to fig. 1, in some alternative embodiments, the projected area of the receiving surface 3 is greater than the projected area of the battery plate 1 in a direction parallel to the welding platform. In order to enable the battery piece 1 and the welding wire 2 to be welded into a whole in a more fitting way, the welding effect of all parts of the battery piece 1, especially the peripheral edges of the battery piece 1, is guaranteed, the problem that the battery piece 1 is seriously warped after welding is avoided, the back surface of the battery piece 1 needs to be completely fitted on the bearing surface 3, and therefore the area of the bearing surface 3 of the welding platform is larger than or equal to the area of the battery piece 1.
With continued reference to FIG. 1, in some alternative embodiments, the heating mechanism 5 is a heating wire, a resistive wire, or a light tube. The heating mechanism 5 is disposed inside the platform body 4, and heat thereof is transmitted to the battery plate 1 and the welding wire 2 through the receiving surface 3.
According to the embodiment, the photovoltaic cell welding platform provided by the utility model has the following beneficial effects:
the photovoltaic cell welding platform disclosed by the utility model has the advantages that the shape of the bearing surface is changed into the concave cambered surface, so that the warping problem caused by different shrinkage of welding wires and battery pieces due to cooling after welding can be counteracted, the fragment rate of the battery pieces can be effectively improved, the aim of improving the production yield is fulfilled, the practicability is improved, and meanwhile, the manufacturing cost is reduced; the adsorption mechanism plays a role in adsorption, so that the battery piece and the welding wire are fully contacted in the welding process, and the welding effect is firmer; the heating mechanism has the function of heating and welding, so that the battery piece and the welding wire are heated and welded to form an integral structure.
While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.
Claims (10)
1. The welding platform is used for welding wires on battery pieces and is characterized by comprising at least one bearing surface for bearing the battery pieces and the welding wires, a platform body connected with the bearing surface and an adsorption mechanism for adsorbing the battery pieces and the welding wires; the platform body is arranged below the bearing surface; the side of the bearing surface facing the platform body is concave downwards to form a concave cambered surface; and a heating mechanism for heating to realize welding of the welding wire and the battery piece is also arranged in the platform body.
2. The photovoltaic cell solder platform of claim 1 wherein the receiving surface has a cambered curvature of 1/2018mm -1 -1/325mm -1 。
3. The photovoltaic cell solder platform of claim 1 wherein the receiving surface has a depth in the first direction of 3mm to 10mm; the first direction is the direction from the bearing surface to the battery piece.
4. A photovoltaic cell soldering station according to claim 1 wherein the receiving surface has a width in the second direction of 160mm to 220mm; the first direction is the direction from the bearing surface to the battery piece, and the second direction is intersected with the first direction.
5. The photovoltaic cell solder platform of claim 1 wherein the receiving surface has a length of not less than 210mm in a third direction, wherein the first direction is the direction from the receiving surface to the cell, and wherein the third direction intersects the first direction.
6. The photovoltaic cell solder platform of claim 1 wherein the solder wire is located between the cell and the receiving surface.
7. The photovoltaic cell soldering platform according to claim 1, wherein the adsorption mechanism comprises a plurality of adsorption holes, the adsorption Kong Kaishe is on the receiving surface, a plurality of adsorption holes are communicated with the inside of the platform body, and an air tap communicated with a plurality of adsorption holes is arranged on the outer surface of the platform body.
8. The photovoltaic cell solder platform of claim 7 wherein the plurality of suction holes are uniformly aligned along the second and third directions; the first direction is the direction pointing to the battery piece from the bearing surface, and the first direction, the second direction and the third direction are intersected in pairs.
9. The photovoltaic cell solder platform of claim 1 wherein the projected area of the receiving surface is greater than the projected area of the cell sheet in a direction parallel to the solder platform.
10. The photovoltaic cell solder platform of claim 1 where the heating mechanism is a heater wire, a resistive wire, or a lamp tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222402006.4U CN218946688U (en) | 2022-09-09 | 2022-09-09 | Photovoltaic cell welding platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222402006.4U CN218946688U (en) | 2022-09-09 | 2022-09-09 | Photovoltaic cell welding platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218946688U true CN218946688U (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222402006.4U Active CN218946688U (en) | 2022-09-09 | 2022-09-09 | Photovoltaic cell welding platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218946688U (en) |
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2022
- 2022-09-09 CN CN202222402006.4U patent/CN218946688U/en active Active
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