CN110948078A - Welding device and welding system for photovoltaic cell - Google Patents
Welding device and welding system for photovoltaic cell Download PDFInfo
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- CN110948078A CN110948078A CN201811133669.2A CN201811133669A CN110948078A CN 110948078 A CN110948078 A CN 110948078A CN 201811133669 A CN201811133669 A CN 201811133669A CN 110948078 A CN110948078 A CN 110948078A
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- 238000003466 welding Methods 0.000 title claims abstract description 139
- 238000010438 heat treatment Methods 0.000 claims abstract description 86
- 230000000712 assembly Effects 0.000 claims abstract description 7
- 238000000429 assembly Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 19
- 238000005476 soldering Methods 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/04—Heating appliances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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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
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Abstract
The invention provides a welding device and a welding system of a photovoltaic cell, wherein the welding device comprises a shell, a welding device and a welding device, wherein the shell comprises a cavity with an open end; the first heating assembly is arranged in the cavity and comprises a plurality of first heating lamps which are distributed at intervals along a first direction, each first heating lamp extends along a second direction, and the first direction is different from the second direction; and the two second heating assemblies are respectively arranged at two ends of the first heating assembly, each of the two second heating assemblies comprises second heating lamps distributed along the second direction, and each of the second heating lamps extends along the first direction. The welding box of the invention provides enough welding temperature, thus ensuring the welding quality; and the gas temperature at the two ends of the heating lamp can be compensated, the problem of uneven gas temperature during welding on the surface of the battery piece is solved, and the welding quality of the whole battery piece is ensured.
Description
Technical Field
The invention relates to the technical field of battery welding, in particular to a welding device and a welding system for a photovoltaic battery.
Background
In the photovoltaic industry, a common welding process for series welding of battery pieces is to perform series welding of battery pieces by using hot air as a heat source. The specific process is that air is accelerated by a fan, moves from top to bottom, absorbs heat by a lamp tube, reaches the surface of the battery piece by the heated air, and welds the battery piece under the combined action of the temperature of the lower heating bottom plate and the heated air.
The welding box adopting the series welding process usually comprises a preheating furnace and a welding furnace which are respectively used for preheating and welding, and the battery piece is preheated by the preheating furnace under the driving of a conveyor belt and then moved to the welding furnace for welding. At present, the conventional preheating furnace adopts infrared lamp tubes arranged in parallel to heat wind for preheating, and the welding furnace adopts heating lamp tubes arranged in parallel to heat wind for welding.
However, the structure still has certain defects, and the temperature around the lamps arranged in parallel is not uniform, so that the surface temperature of the battery pieces is not uniform, and the result of insufficient soldering or over-soldering is easily caused. Meanwhile, the welding effect of the whole grid line of the battery piece is uneven due to unbalanced heat and large temperature difference, and the deviation is large.
Disclosure of Invention
The invention aims to provide a welding device and a welding system for a photovoltaic cell, which solve the problem of unbalanced welding temperature of the existing welding box.
According to an aspect of the present invention, there is provided a soldering apparatus for a photovoltaic cell, comprising:
a housing comprising a cavity having an open end;
the first heating assembly is arranged in the cavity and comprises a plurality of first heating lamps which are distributed at intervals along a first direction, each first heating lamp extends along a second direction, and the first direction is different from the second direction;
the two second heating assemblies are respectively arranged at two ends of the first heating assembly, each second heating assembly comprises second heating lamps distributed along the second direction, and each second heating lamp extends along the first direction.
In an exemplary embodiment of the invention, the cavity comprises a first chamber and a second chamber which are independent from each other, and the first heating assembly and two second heating assemblies are arranged in the first chamber and the second chamber respectively; the first chamber and the second chamber are used for welding and preheating the battery respectively.
In an exemplary embodiment of the invention, the cavity further includes at least one third chamber disposed adjacent to a side of the second chamber away from the first chamber, and the first heating assembly is disposed in the third chamber.
In an exemplary embodiment of the invention, each of the heating lamps in the first, second and third chambers is connected to a separate controller.
In an exemplary embodiment of the invention, the first, second and third chambers each further comprise a fan and a vent partition positioned above the heating assembly.
In an exemplary embodiment of the invention, a temperature sensor is mounted on the ventilation barrier.
In an exemplary embodiment of the invention, the first chamber further includes a wind collecting cavity, and the wind collecting cavity is arranged around the fan and the ventilation partition plate.
In an exemplary embodiment of the invention, the first chamber further comprises an outer cover surrounding the first heating assembly and the second heating assembly.
In an exemplary embodiment of the invention, the welding device further comprises: and the first exhaust port is arranged on two opposite side surfaces of the first chamber, the second chamber and the third chamber and extends along the first direction.
In an exemplary embodiment of the invention, the welding device further comprises: and the second air outlet is arranged between the first cavity and the second cavity.
In an exemplary embodiment of the invention, the cavity further comprises a cooling chamber located on a side of the second chamber remote from the first chamber.
In an exemplary embodiment of the invention, the cooling chamber is provided with a third air outlet.
According to another aspect of the invention, a welding system for photovoltaic cells is provided, which comprises the welding device as described in any one of the above, and a cell piece conveying device, wherein a part of the conveying area of the cell piece conveying device is opposite to the open end of the cavity of the welding device.
The welding device for the photovoltaic cell is characterized in that heating lamps which are arranged in parallel are arranged in a welding furnace, and the two ends of the welding furnace are additionally provided with the heating lamps which are arranged vertically. On one hand, sufficient welding temperature is provided, and welding quality is ensured; on the other hand, the gas temperature at the two ends of the heating lamp is compensated, the problem of uneven gas temperature during welding on the surface of the battery piece is solved, and the welding quality of the whole battery piece is ensured.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of a photovoltaic cell series-welded conveyor belt;
FIG. 2 is a schematic view of the arrangement of the lamp tubes of the welding furnace according to the present invention;
FIG. 3 is a schematic view of the arrangement of the lamps of the first preheating furnace according to the present invention;
FIG. 4 is a schematic view of the arrangement of the lamp tubes of the second preheating furnace according to the present invention;
FIG. 5 is a schematic view of the arrangement of the lamp tubes in the welding chamber according to the present invention;
FIG. 6 is a schematic view of the structure of the tuyere and the air collecting cavity of the welded grate of the present invention;
FIG. 7 is a schematic view of a cooling chamber of the welding box of the present invention;
FIG. 8 is a schematic view of the overall structure of the welding box and the battery conveyor belt of the present invention.
In the figure, 1, a battery piece; 2. a conveyor belt; 3. a first chamber; 41. a first welding lamp tube; 42. a second welding lamp tube; 5. a second chamber; 61. a first preheating lamp tube; 62. a second preheating lamp tube; 7. a third chamber; 8. a third preheating lamp tube; 9. a fan; 10. a ventilation baffle; 11. a temperature sensor; 12. a housing; 13. a first exhaust port; 14. a second air outlet; 15. a cooling chamber; 16. and a third air outlet.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
In the related art, referring to fig. 1, a photovoltaic cell 1 is transported to a welding point by a conveyor belt 2 during series welding, and a welding box located above the welding point provides high-temperature hot air to weld the cell on the welding belt by using the heat of the hot air. Conventional welding cabinets are typically provided side by side with four stoves, each stove top carrying two fans, for a total of eight fans, each at a speed of about 3.0 m/s. The No. 1 and the No. 2 are preheating furnaces, each preheating furnace is provided with seven infrared lamp tubes which are arranged in parallel and used for preheating, the No. 3 furnace is a welding furnace, seven heating lamp tubes which are arranged in parallel and used for welding, the No. 4 furnace is a cooling furnace, and the No. 4 furnace is provided with seven infrared lamp tubes which are arranged in parallel and used for cooling the battery pieces gradually.
In the prior art, all the lamp tubes are arranged perpendicular to the moving direction of the battery piece, and the gas temperature at two ends and the central temperature have certain difference, so that the gas temperature is difficult to ensure uniformity, and the phenomenon of over-welding or insufficient welding at four sides of the central area of the battery piece is easily caused. For example, if the welding temperature of the center of the battery piece is ensured to be proper, the temperature of the four sides of the battery piece is low, and cold joint is easy to form; if the temperature of the four sides is ensured to be proper, intermediate temperature overweld is caused. In addition, the phenomenon of back face over-welding or front face under-welding of the battery piece is easily caused, under the condition that the back face welding quality is met, the front face under-welding of the battery piece is easily caused, and under the condition that the front face welding quality is met, the back face over-welding is easily caused. The welding tension is insufficient. Moreover, due to unbalanced heat and large temperature difference, the welding effect of the whole grid line of the battery piece is uneven, the deviation is large, and the welding tension is insufficient.
The embodiment of the invention provides a welding device for photovoltaic cells, which is suitable for series welding of cell pieces and can also be suitable for series welding of all types of photovoltaic cell pieces, and the welding device is not listed here.
The welding device for the photovoltaic cell comprises a shell, a welding device and a welding device, wherein the shell comprises a cavity with an open end; a first heating assembly is arranged in the cavity and comprises a plurality of first heating lamps which are distributed at intervals along a first direction, each first heating lamp extends along a second direction, and the first direction is different from the second direction; still be provided with two second heating element in the cavity, locate first heating element's both ends respectively, two second heating element all include the second heating lamp that distributes along the second direction, and each second heating lamp extends along the first direction.
The device can be used for welding when the battery stringer welds, also can be used for preheating when the stringer welds, and is corresponding, and when its inside first heat lamp and second heat lamp were used for preheating, the temperature was lower, and when being used for the welding, the temperature was higher.
Compared with the traditional welding or preheating lamp tube, the invention adds the heating lamps at the two ends of the heating lamp to compensate the gas temperature at the two ends, thereby solving the problem of uneven welding gas temperature or preheating gas temperature on the surface of the battery piece and ensuring the welding quality of the whole battery piece.
The soldering apparatus for photovoltaic cells according to the embodiment of the present invention will be described in detail below:
the heating lamps may be any lamps capable of heating the ambient gas to a welding temperature or a preheating temperature, such as commonly used infrared lamps, which are used at higher temperatures for welding and lower temperatures for preheating. The heating lamp can also be a filament, a lamp strip and other structures. The following description will take the example of a heating lamp.
The second heating lamp tube is positioned at two ends of the first heating lamp tube, and comprises a second heating lamp tube which is just contacted with the first heating lamp tube on the same plane, and also comprises a second heating lamp tube which is not positioned on the same plane and is arranged up and down, the horizontal projection of the second heating lamp tube is just positioned at two ends of the first heating lamp tube, the horizontal projection of the second heating lamp tube is crossed with the first heating lamp tube, and the horizontal projection of the second heating lamp tube has a smaller distance with the first heating lamp tube. Therefore, the two ends of the present invention refer to any position near the end of the first heating lamp, as long as the temperature of the gas at the two ends of the first heating lamp can be compensated.
For convenience of description, the heating lamp for welding will be referred to as a welding lamp hereinafter, and the heating lamp for preheating becomes a preheating lamp.
For example, in the exemplary embodiment, the first cavity is used for welding, as shown in fig. 2, seven first welding lamps 41 arranged in parallel and two second welding lamps 42 arranged in parallel are disposed in the cavity, the first welding lamps 41 are both perpendicular to the moving direction of the battery pieces (the moving direction of the transmission belt, i.e. the first direction), and the second welding lamps 42 are both parallel to the moving direction of the battery pieces (i.e. the second direction), and are respectively located at two ends of the upper portion of the first welding lamps 41.
In other embodiments of the present invention, the number of the first welding lamps 41 and the second welding lamps 42 may be appropriately adjusted according to the welding temperature. For example, if the temperature difference between the two sides is large, the number of second welding lamps 42 can be increased. Meanwhile, the distance and length between the first welding lamp 41 and the second welding lamp 42 can be adjusted according to the distribution of the welding temperature and the lamp properties. The present invention is not particularly limited thereto.
In order to facilitate the adjustment and control of the welding temperature at different positions, all the first welding lamp 41 and the second welding lamp 42 may be connected to an independent controller, so as to achieve the independent control of the output power, and the temperatures of the first welding lamp 41 and the second welding lamp 42 may be the same or different, and the overall temperature may be made to be consistent through the independent control.
In the present exemplary embodiment, referring to fig. 2, the welding device further includes a second chamber 5 for preheating the battery piece before welding, the second chamber 5 being adjacently disposed to the first chamber 3 (left side of the first chamber in the drawing); as shown in fig. 3, seven first preheating lamps 61 arranged in parallel and two second preheating lamps 62 arranged in parallel are disposed in the second chamber 5, the extending directions of the first preheating lamps 61 are both perpendicular to the moving direction of the battery pieces (the moving direction of the transmission belt, i.e. the first direction), and the extending directions of the second preheating lamps 62 are both parallel to the moving direction of the battery pieces (i.e. the second direction), and are respectively located at two ends of the upper portion of the first preheating lamps 61.
The second preheating lamp tubes 62 are additionally arranged at the two ends of the first preheating lamp tube 61 in the same way as the lamp tube arrangement of the first cavity, so that the gas temperatures at the two ends of the first preheating lamp tube 61 are compensated, the problem that the preheating temperatures at the two sides of the battery piece are insufficient is solved, the surface preheating uniformity of the battery piece is ensured, and the guarantee is provided for the subsequent welding quality.
The first preheating lamp tube may be any lamp tube capable of preheating the ambient gas by heating, for example, a commonly used infrared lamp tube, whose power is generally lower than that of the heating lamp tube for welding, and the invention is not particularly limited thereto. The second preheating lamps 62 are dispersed at both ends of the first preheating lamp 61 in the same manner that the second welding lamps 42 are dispersed at the first welding lamps 41.
In other embodiments of the present invention, the number of the first preheating lamps 61 and the second preheating lamps 62 may be appropriately adjusted according to the preheating temperature. For example, if the temperature difference between both sides is large, the number of the second preheating lamps 62 can be increased. Meanwhile, the distance and length between the first preheating lamp 61 and the second preheating lamp 62 can be adjusted according to the distribution of preheating temperature and the lamp properties. The present invention is not particularly limited thereto.
In order to control the preheating temperature to be uniform, the number and the positions of the preheating lamp tubes are adjusted, the power of the preheating lamp tubes can be changed, the high-power heating lamp tubes can be used at the positions with lower temperature, meanwhile, the preheating temperature of the battery pieces can be properly increased by arranging the individual high-power preheating lamp tubes, the battery pieces are smoothly transited to the welding temperature, and the influence on the quality of the battery pieces caused by overlarge temperature difference is avoided. For example, in the present exemplary embodiment, the two second preheating lamps 62 use infrared lamps of the same power as the welding lamps; the central one of the seven first preheating lamps 61 also employs an infrared lamp having the same power as the welding lamp. Of course, other powers are also possible. In order to adjust and control the preheating temperature of different positions of the battery piece, all the first preheating lamp tubes 61 and the second preheating lamp tubes 62 can be connected with independent controllers, so that the independent control of the output power is realized. Of course, with the temperature compensation, the preheating lamps may be controlled in groups similar to the first chamber for cost and convenience of operation.
In the present exemplary embodiment, referring to fig. 4, the welding device further includes a third chamber 7 in the cavity, and the third chamber 7 is adjacently arranged on the side of the second chamber 5 away from the first chamber 3 (the left side of the second chamber in the figure); seven third preheating lamp tubes 8 which are arranged in parallel are arranged in the third chamber, and the extending directions of the third preheating lamp tubes 8 are all vertical to the moving direction of the battery pieces (the moving direction of the transmission belt).
The purpose of the third chamber 7 is to preheat the battery piece preliminarily, so that the temperature of the battery piece is stably transited to the second chamber, and the quality of the battery piece is prevented from being influenced by too fast temperature change.
The third preheating lamp 8 may be any lamp capable of heating the ambient gas for preheating, such as a commonly used infrared lamp, which has a power generally lower than that of the heating lamp for welding, may be an infrared lamp having a power consistent with that of the first preheating lamp or the second preheating lamp, or may be an infrared lamp having a power lower than that of the first preheating lamp or the second preheating lamp, which is not particularly limited in the present invention. The number of the third preheating lamp tubes 8 can be properly adjusted according to the preheating temperature. The distance and length of the third preheating lamp 8 can be adjusted according to the distribution of preheating temperature and the lamp property. The present invention is not particularly limited thereto.
The exemplary embodiment adopts the structure of the third chamber 7, the second chamber 5 and the first chamber 3 which are arranged from left to right in sequence, as shown in fig. 5, the temperature of the battery piece can be gradually increased to the welding temperature, and the performance of the battery piece is ensured. In addition, the lamp tubes additionally arranged in the second chamber 5 and the first chamber 3 can compensate the temperature difference of two sides, so that the surface temperature of the whole battery piece is uniform and consistent, and the welding quality is ensured.
In the present exemplary embodiment, referring to fig. 2-4, the third chamber 7, the second chamber 5 and the first chamber 3 of the welding box each further comprise a fan 9 and a ventilation baffle 10 mounted above the respective lamp tubes. The ventilation partition plate 10 is used for scattering wind and uniformly delivering the wind to the surface of each heating lamp tube to ensure that the temperature of the hot wind is uniform, and the ventilation partition plate can be in various shapes such as a net shape, a grid shape and the like, and the invention is not particularly limited thereto.
In the present exemplary embodiment, referring to fig. 6, the first chamber 3 further includes a wind gathering cavity 11, the wind gathering cavity 11 is disposed around the fan and the ventilation partition, and the wind gathering cavity 11 gathers wind, so that the wind can intensively enter the heating lamp through the ventilation partition 10 to heat the heating lamp, which is beneficial to controlling the temperature of the heating lamp. The wind-gathering cavity is preferably funnel-shaped with a large upper part and a small lower part.
In the present exemplary embodiment, referring to fig. 7, the first chamber 3 further includes an outer cover 12, and the outer cover 12 is enclosed outside the first heating lamp 41 and the second heating lamp 42. It can play the effect of wind direction water conservancy diversion, keeps the wind current flow direction unanimous, and hot-air is full of whole cavity, guarantees the stability of first cavity temperature, avoids welding external environment influence (for example cross wind around). Moreover, this dustcoat 12 can remain the hot surplus of wind during the welding, and hot surplus combines with the heating bottom plate, can let the battery piece slowly cool off gradually, prevents that external irregular cold wind from getting into, and the sudden cooling of battery piece brings the damage to the battery piece.
In the present exemplary embodiment, the welding box further includes first exhaust openings 13 that open on opposite sides of the second chamber 5, the third chamber 7, and the first chamber 3 in the belt moving direction and extend in the belt moving direction. For example, referring to fig. 5 and 6, the first chamber 3 is provided with a first long groove-shaped exhaust opening 13 on each of the front side and the rear side in the moving direction of the battery piece, and the first long groove-shaped exhaust opening 13 extends to the second chamber and the third chamber. The preheated or welded hot air is always preferentially discharged from the first exhaust port to form a flowing air curtain, so that the preheating or welding temperature stabilizing effect is realized and maintained. The air quantity is controlled by the opening size of the air outlet.
In another embodiment of the present invention, the three furnaces may be provided with respective first exhaust ports, and the size of the air volume may be controlled by the size of the opening of the exhaust port. The shape of the first exhaust port includes, but is not limited to, a long groove shape, and the present invention is not particularly limited thereto.
In the present exemplary embodiment, the welding box further comprises a second air outlet 14, the second air outlet 14 opening between the second chamber 5 and the first chamber 3 for leading excess hot air out of the furnace body. Referring to fig. 6, the second air outlet 14 formed between the second chamber and the first chamber is in the shape of a long groove, but the shape of the second air outlet may be other shapes, and the present invention is not limited thereto.
In the exemplary embodiment, referring to fig. 5-7, the welding box further includes a cooling chamber 15 disposed on a side (right side in the figure) of the second chamber away from the first chamber, and the cooling chamber 15 is opened with a third air outlet 16. The waste heat in the first cavity flows to the right cooling cavity, so that the battery piece can be slowly cooled in the transition of the waste heat in the cooling cavity, and the condition that the battery piece is hidden to crack due to the fact that sudden cooling temperature difference is too large is prevented. Meanwhile, the cooling cavity replaces the traditional heating lamp tube, so that the equipment and energy consumption cost are saved. The volume of the cooling cavity is designed according to the cooling requirement, the third air outlet is used for discharging heat in the cooling cavity, and can be designed at the top of the cavity body shown in fig. 7 or other positions, and the invention is not specially limited.
The embodiment of the invention further provides a welding system for a photovoltaic cell, which comprises the welding device described in the above embodiment and a cell piece conveying device with reference to fig. 8, wherein a part of conveying area of the cell piece conveying device is opposite to the open end of the cavity of the welding device, and the specific structure is not repeated. When the welding system is used, the welding system is arranged right above the battery piece conveying belt, the battery pieces sequentially pass through the third chamber 7, the second chamber 5, the first chamber 3 and the cooling chamber 15 in the conveying direction, and series welding can be completed through the process of the battery pieces.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (13)
1. A soldering apparatus for a photovoltaic cell, comprising:
a housing comprising a cavity having an open end;
the first heating assembly is arranged in the cavity and comprises a plurality of first heating lamps which are distributed at intervals along a first direction, each first heating lamp extends along a second direction, and the first direction is different from the second direction;
the two second heating assemblies are respectively arranged at two ends of the first heating assembly, each second heating assembly comprises second heating lamps distributed along the second direction, and each second heating lamp extends along the first direction.
2. The welding device for photovoltaic cells according to claim 1, wherein the cavity comprises a first chamber and a second chamber which are independent from each other, and the first heating assembly and the two second heating assemblies are arranged in the first chamber and the second chamber; the first chamber and the second chamber are used for welding and preheating the battery respectively.
3. The apparatus of claim 2, wherein the cavity further comprises at least one third chamber disposed adjacent to a side of the second chamber remote from the first chamber, the first heating assembly being disposed in the third chamber.
4. The photovoltaic cell soldering apparatus according to claim 3, wherein each of the heating lamps in the first chamber, the second chamber and the third chamber is connected to a separate controller.
5. The photovoltaic cell soldering apparatus according to claim 3, wherein the first chamber, the second chamber and the third chamber each further comprise a fan and a vent partition positioned above the heating assembly.
6. The photovoltaic cell soldering apparatus according to claim 5, wherein a temperature sensor is mounted on the ventilation barrier.
7. The photovoltaic cell soldering apparatus according to claim 5, wherein the first chamber further comprises a wind-collecting chamber, and the wind-collecting chamber is disposed around the fan and the ventilation partition.
8. The soldering apparatus for photovoltaic cells according to claim 2, wherein the first chamber further comprises an outer cover surrounding the first and second heating assemblies.
9. The soldering apparatus for a photovoltaic cell according to claim 3, further comprising:
and the first exhaust port is arranged on two opposite side surfaces of the first chamber, the second chamber and the third chamber and extends along the first direction.
10. The soldering apparatus for a photovoltaic cell according to claim 9, further comprising:
and the second air outlet is arranged between the first cavity and the second cavity.
11. The soldering apparatus for photovoltaic cell according to claim 2, wherein the cavity further comprises a cooling chamber on a side of the second chamber remote from the first chamber.
12. The device for welding photovoltaic cells as claimed in claim 11, wherein the cooling chamber is provided with a third air outlet.
13. A welding system for photovoltaic cells, comprising:
the welding device of any one of claims 1-12;
and part of the conveying area of the battery piece conveying device is opposite to the open end of the cavity of the welding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811133669.2A CN110948078A (en) | 2018-09-27 | 2018-09-27 | Welding device and welding system for photovoltaic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811133669.2A CN110948078A (en) | 2018-09-27 | 2018-09-27 | Welding device and welding system for photovoltaic cell |
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Cited By (1)
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| CN111765989A (en) * | 2020-05-29 | 2020-10-13 | 无锡小强半导体科技有限公司 | Series welding machine based on temperature verification and verification method thereof |
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