A processing system for a solar cell string

Abstract

The utility model relates to solar cell production equipment technical field discloses a kind of processing system of solar cell string, the processing system of solar cell string includes: bearing main body, the bearing main body is used to place the solar cell string;Voltage applying device, the voltage applying device includes probe, the probe is set to the direction of bearing main body, the probe is used to contact the busbar or electrode of the solar cell string, to apply reverse bias voltage to the solar cell string;Laser-induced sintering device, the laser-induced sintering device includes laser emitter, the laser emitter is set to the direction of bearing main body, the laser emitter is used to emit laser to the solar cell string.This solar cell string's processing system is applied to solar cell string, make solar cell string fill factor rise, string resistance drop, to increase the photoelectric conversion efficiency of solar cell string.

Description

Technical Field

[0001] This utility model relates to the field of solar cell production equipment technology, and in particular to a solar cell string processing system. Background Technology

[0002] A solar cell string refers to multiple solar cells connected together in series to form a battery string. This connection method can increase the total voltage of the cells, thereby increasing the output power of the cells. However, after the cells are connected in series by a welding machine, problems such as a decrease in fill factor and an increase in series resistance will occur, causing the efficiency of the solar cell string to decrease. Utility Model Content

[0003] This utility model discloses a solar cell string processing system to improve the problems of decreased fill factor and increased string resistance in solar cell strings, thereby increasing the photoelectric conversion efficiency of the solar cell strings. This application discloses a solar cell string processing system, which includes:

[0004] A support body for holding the solar cell string;

[0005] A voltage application device, comprising a probe disposed toward the carrier body, the probe being used to contact the busbars or electrodes of the solar cell string to apply a reverse bias voltage to the solar cell string;

[0006] A laser-induced sintering apparatus, comprising a laser emitter disposed toward the support body, the laser emitter being used to emit laser light toward the solar cell string.

[0007] Furthermore, the supporting body includes:

[0008] A conveyor belt for transporting the solar cell strings;

[0009] A support frame includes support legs and a support panel disposed on the support legs. The support panel has a groove or a hollow area recessed into itself along the surface of the support panel. The groove or the hollow area is used to accommodate the transmission belt so that the transmission belt and the support panel are used to support the solar cell string.

[0010] Furthermore, the support leg is a support leg with a first lifting shaft, which is used to drive the support panel to move up and down.

[0011] Furthermore, the processing system for the solar cell string also includes a corrector, the corrector including a first corrector symmetrically arranged on both sides of the support panel along a first direction, the first corrector being used to correct the offset of the solar cell string in the first direction, the first direction being the width direction of the support panel;

[0012] The corrector also includes a second corrector located at the end of the support panel, corresponding to the transmission end of the conveyor belt. The second corrector is used to correct the offset of the solar cell string in a second direction, which is the transmission direction of the conveyor belt.

[0013] Furthermore, on either side of the support panel, adjacent first correctors are alternately arranged with a first spacing and a second spacing, wherein the first spacing is smaller than the second spacing, and the second spacing is smaller than the length of the solar cell string along a second direction, which is the transmission direction of the transmission belt.

[0014] Furthermore, the voltage application device also includes a probe bracket, which includes a vertical support leg and a horizontal support rod connected to each other. The probe is mounted on the horizontal support rod, and the vertical support leg is a vertical support leg with a second lifting shaft, which is used to drive the horizontal support rod to move up and down.

[0015] Furthermore, the probe is an elastic probe.

[0016] Furthermore, the laser-induced sintering device also includes a laser head support, which is connected to the laser emitter.

[0017] Furthermore, the number of the voltage application devices is greater than 1; and / or,

[0018] The number of laser-induced sintering devices is greater than 1.

[0019] Furthermore, the processing system for the solar cell string also includes a slide rail disposed on the side of the supporting body; the voltage application device is slidably connected to the slide rail, and / or the laser-induced sintering device is slidably connected to the slide rail.

[0020] Compared with the prior art, this application has at least the following beneficial effects:

[0021] The solar cell string processing system of this application utilizes a voltage application device and a laser-induced sintering device to optimize the performance of solar cell strings processed by the system and improve the efficiency degradation problem after the cells are connected in series by a welding machine.

[0022] The processing system for this solar cell string includes a support body, a voltage application device, and a laser-induced sintering device. The support body holds the solar cell string, while the probes in the voltage application device are positioned towards the support body to apply a reverse bias voltage to the solar cell string, enhancing its built-in electric field. The laser emitter in the laser-induced sintering device is also positioned towards the support body to apply laser light to the solar cell string, causing it to generate a large number of electrons and holes. Under the combined action of the voltage application device and the laser-induced sintering device, the electron and hole transport rate in the solar cell string is accelerated, rapidly generating heat points in the electrode region. This improves the contact effect in the electrode region, reduces the series resistance of the solar cell string, increases the fill factor, and effectively mitigates the efficiency degradation problem of the solar cell string. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the solar cell string processing system according to an embodiment of this application;

[0025] Figure 2 This is a top view of the solar cell string processing system according to an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the structure of a support body in the processing system of a solar cell string according to an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of another supporting structure in the processing system of the solar cell string according to an embodiment of this application;

[0028] Figure 5 This is a side view of the processing system for the solar cell string according to an embodiment of this application;

[0029] Figure 6 This is a schematic diagram of the voltage application device of the solar cell string processing system according to an embodiment of this application.

[0030] Icons: 1. Support body; 11. Conveyor belt; 12. Support frame; 121. Support leg (first lifting shaft); 122. Support panel; 2. Solar cell string; 3. Voltage application device; 31. Probe; 32. Probe bracket; 321. Horizontal support rod; 322. Vertical support leg (second lifting shaft); 4. Laser-induced sintering device; 41. Laser emitter; 42. Laser bracket; 5. Corrector; 51. First corrector; 52. Second corrector; 6. Slide rail; 7. Slider. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0033] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0034] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0035] The technical solution provided by this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0036] Solar cells consist of four units: silicon material, silicon wafers, solar cells, and photovoltaic modules. The basic unit of a photovoltaic module is the solar cell, and solar cells are connected in series to form a solar cell string, which is then processed into a photovoltaic module for use as a power source.

[0037] The series connection of solar cells is achieved through a welding process, which involves welding the front and back sides of each cell together with solder strips to form a series solar cell string. During the welding process, the electroluminescence data of the cell string decreases, the series resistance increases, and the fill factor decreases, especially in the middle region of the solar cell string. This is mainly due to the excessively high temperature in the center of the welding machine and the lower temperature at the edges, resulting in a significant reduction in the photoelectric conversion efficiency of the cell string.

[0038] Based on the above problems, this application provides a solar cell string processing system, which effectively solves the problems of increased string resistance, decreased fill factor and decreased electroluminescence value of solar cell strings caused by welding process, thereby improving the photoelectric conversion efficiency of solar cell strings.

[0039] This application provides a processing system for solar cell strings, such as... Figures 1-6 As shown, the processing system for this solar cell string includes:

[0040] Support body 1, which is used to hold solar cell strings 2;

[0041] The voltage application device 3 includes a probe 31, which is arranged toward the carrier body 1. The probe 31 is used to contact the busbar or electrode of the solar cell string 2 to apply a reverse bias voltage to the solar cell string 2.

[0042] The laser-induced sintering device 4 includes a laser emitter 41, which is positioned toward the support body 1 and is used to emit laser light to the solar cell string 2.

[0043] This application provides a processing system for a solar cell string 2. In this processing system, a carrier body 1 is used to place the solar cell string 2, and a probe 31 of a voltage application device 3 is used to contact the busbar or electrode of the solar cell string 2 to apply a reverse bias voltage to the solar cell string 2, thereby increasing the built-in electric field of the solar cell string 2. Meanwhile, a laser emitter 41 in a laser-induced sintering device 4 is used to emit a laser to the solar cell string 2, generating a large number of electrons and holes. Thus, under the interaction of these two devices, the transmission rate of electrons and holes in the solar cell string 2 in the carrier body 1 is accelerated, which helps to generate a large number of heat points in the electrode area of ​​the solar cell string 2, improves the contact effect in the electrode area, and effectively solves the problem of efficiency degradation of the solar cell string 2.

[0044] It is understood that the solar cell string 2 is formed by welding multiple individual solar cells. Therefore, the voltage application device 3 can apply a reverse bias voltage value to an individual solar cell, at which time the reverse bias voltage applied to an individual solar cell is 10V~50V, or apply a reverse bias voltage value to the solar cell string 2, at which time the applied reverse bias voltage value is equal to the product of the reverse bias voltage value applied to an individual solar cell and the number of solar cells, where the number of solar cells includes 4 to 16 cells.

[0045] Furthermore, the processing system for the solar cell string 2 of this application can be configured with different sized support bodies 1 according to the size of the solar cell string 2. Moreover, by extending the length of the support body 1 and providing multiple voltage application devices 3 and multiple laser-induced sintering devices 4, simultaneous processing of multiple solar cell strings 2 or simultaneous processing of different areas of a single solar cell string 2 can be achieved. In other words, by configuring the support body 1 and adding multiple voltage application devices 3 and laser-induced sintering devices 4, this application helps to improve production and processing efficiency.

[0046] Furthermore, in the electrode fabrication process of solar cells, when applying voltage and laser to the cells, the process should be carried out in a closed space. This is because the slurry has a certain humidity during the process, and a closed space can prevent impurities in the air from entering the slurry and affecting the performance of the solar cells. However, the processing system for solar cell string 2 can be processed directly in the external environment. This is because the busbars or electrodes of solar cell string 2 are in a solid and dry state, and the basic structure of solar cell string 2 has already been formed. Processing it is a secondary reinforcement process, so the contamination of solar cell string 2 by impurities in the air is less. Moreover, since the processing system for solar cell string 2 is in the external environment, it is not limited by the constraints of a closed space. The design possibilities of the processing system for solar cell string 2 are greater, which helps to improve the efficiency of production and reduce production costs.

[0047] Furthermore, the light source emitted by the laser emitter 41 can be a single wavelength or a full solar spectrum with a wavelength range of 400 nm to 1100 nm, with an energy density of 10 kW / m² to 10000 kW / m² and a scanning speed of 26 m / s to 65 m / s. The laser emitter 41 can perform one of the following scanning methods: point scanning, line scanning, or area scanning. When point scanning is used, the laser power is 20 W to 30 W, producing a power density of 1000 kW / m² to 10000 kW / m²; when line scanning is used, the laser power is 20 W to 55 W, producing a power density of 100 kW / m² to 1000 kW / m²; and when area scanning is used, the laser power is 20 W to 100 W.

[0048] Understandably, before the solar cells undergo the welding process, they can be cut to occupy one or more of the following areas: 100%, 50%, 25%, 12.5%, and 6.25% of the total solar cell area. The welding process can then utilize one or more of these cut solar cells.

[0049] To achieve automated processing, in one optional embodiment, the carrier body 1 includes a loading plane and a robotic arm. The solar cell string 2 is placed on the loading plane by the robotic arm. After the solar cell string 2 is processed, it is transferred to the next process by the robotic arm, thereby realizing the docking of different processes.

[0050] In another alternative implementation, such as Figure 1 , Figure 2 As shown, the supporting body 1 includes a conveyor belt 11 and a support frame 12. The conveyor belt 11 is used to transport the solar cell string 2, and the support frame 12 includes a support leg 121 and a support panel 122 disposed on the support leg 121. The support panel 122 has a groove or hollow area formed by recessing along the surface of the support panel 122 toward its own interior. The groove or hollow area is used to accommodate the conveyor belt 11 so that the conveyor belt 11 and the support panel 122 are used to support the solar cell string 2.

[0051] Compared to processing methods using robotic arms, the conveyor belt 11 offers greater convenience and avoids direct contact with the solar cell strings 2, reducing damage during transport. Furthermore, the conveyor belt 11, with its extended transport distance, allows for the installation of multiple voltage application devices 3 and laser-induced sintering devices 4, thereby increasing production efficiency. The grooves or open areas of the support panel 122 accommodate the conveyor belt 11, enhancing its stability during transport and ensuring the stability of the voltage application devices 3 and laser-induced sintering devices 4 when applied to the solar cells.

[0052] In addition, in order to improve the transmission stability of the conveyor belt 11, the conveyor belt 11 may also include a tensioning mechanism, which is used to tension the conveyor belt 11 and provide power, and to prevent the conveyor belt 11 from deviating, thereby reducing the transmission error of the conveyor belt 11.

[0053] Furthermore, the support leg 121 is a support leg 121 with a first lifting shaft 121, which is used to drive the support plate to move up and down. The first lifting shaft 121 realizes the lifting movement of the support panel 122. When the solar cell string 2 is transferred from the previous process and docked with the conveyor belt 11, the height of the support panel 122 is slightly lower than the height of the conveyor belt 11, thereby reducing the friction between the solar cell string 2 and the support panel 122 during the transfer process, avoiding physical damage to the solar cell string 2 and affecting the photoelectric conversion efficiency of the solar cells. When the laser emitter 41 and the probe act on the cell string, the support platform rises to the same plane as the conveyor belt 11, so that the conveyor belt 11 is located in the hollow area or groove area of ​​the support panel 122, thereby ensuring high stability when applying voltage and laser to the solar cell string 2.

[0054] It is important to note that, such as Figure 3 As shown, if the support panel 122 includes a hollow structure, then the support panel 122 is divided into three parts, each of which corresponds to at least two first lifting shafts 121, and the support panel 122 is symmetrically arranged at its first and last ends; as shown Figure 4 As shown, when the support panel 122 includes a groove structure, the support panel 122 is a complete panel structure. Therefore, the number of first lifting shafts 121 should be greater than or equal to four, and they should be symmetrically arranged at the beginning and end of the support panel 122.

[0055] The first lifting shaft 121 includes a scissor-type lifting structure, a telescopic cylinder lifting structure, a guide rail chain lifting structure, a screw transmission lifting structure, or a cylinder telescopic structure, etc. This application does not impose any particular restrictions on the structure of the first lifting shaft 121, as long as it achieves the purpose of this application, namely, to drive the lifting movement of the support panel 122.

[0056] It is understandable that during the transmission of the solar cell string 2, the transmission error of the transport belt 11 will affect the position of the solar cell string 2 on the transport belt 11, thus making it difficult for the voltage application device 3 and the laser-induced sintering device 4 to act on the electrode area of ​​the solar cell string 2, affecting the processing accuracy. Therefore, a corrector 5 is further set in the solar cell processing system. The corrector 5 includes a first corrector 51 symmetrically arranged on both sides of the support panel 122 along a first direction, and a second corrector 5 located at the end of the support panel 122, corresponding to the transmission end of the transport belt 11. The first corrector 51 is used to correct the offset of the solar cell string 2 in the first direction, which is the width direction of the support panel 122. The second corrector 5 is used to correct the offset of the solar cell string 2 in the second direction, which is the transmission direction of the transport belt 11. Therefore, by setting the first corrector 51 and the second corrector 5, the position accuracy of the solar cell string 2 during the transmission process is ensured, thereby improving the processing accuracy.

[0057] Furthermore, on either side of the support panel 122, adjacent first correctors 51 are alternately arranged with a first spacing and a second spacing. The first spacing is smaller than the second spacing, and the second spacing is smaller than the length of the solar cell string 2 along the second direction, which is the transmission direction of the transmission belt 11. Since the second spacing is smaller than the length of the solar cell string 2 along the second direction, it avoids the phenomenon that the correction effect of the correctors 5 is poor due to the excessively long spacing of the first correctors 51, which could cause the position of the solar cells to shift during transmission. The method of the first spacing being smaller than the second spacing and adjacent correctors 5 being alternately arranged with the first spacing and the second spacing ensures that the number of first correctors 51 is not too large due to the excessively short spacing during the transmission of the solar cells, thus avoiding unnecessary waste.

[0058] In addition, compared with the method of uniformly setting the first corrector 51, this application adopts the method of alternating the first spacing and the second spacing of adjacent first correctors 51, which can effectively increase the precision of correction, ensure that the solar cell string 2 does not shift during transmission, and also reduce the number of correctors 5, thereby reducing the production and processing costs.

[0059] Furthermore, such as Figure 5As shown, the voltage application device 3 also includes a probe bracket 32, which includes a vertical support leg 322 and a horizontal support rod 321 connected to each other. The probe is mounted on the horizontal support rod 321. The vertical support leg 322 is a vertical support leg 322 with a second lifting shaft 322. The second lifting shaft 322 is used to drive the horizontal support rod 321 to move up and down. The horizontal support rod 321 serves to support, fix, and protect the probe 31. It not only effectively prevents deformation and displacement of the probe 31 due to uneven force during use, thus avoiding its inability to act on the electrode setting area, but also reduces the shortening of the probe 31's lifespan when affected by external forces. The vertical support leg 322 has a lifting effect. When the probe 31 is not in use, the lifting effect of the second lifting shaft 322 moves the probe 31 away from the supporting structure. When the probe support 32 is in use, the lowering effect of the lifting structure moves the probe 31 closer to the solar cell string 2, thereby enabling the probe 31 to apply a reverse bias voltage to the solar cell string 2. This structural arrangement has a protective effect on the voltage application device 3 and increases its service life.

[0060] In one alternative implementation, such as Figure 6 As shown, the horizontal support rod 321 consists of two parts: one part corresponds to the mounting area of ​​the probe 31, and the other part is the connection area between the horizontal support rod 321 and the vertical support leg 322. The width of the probe 31 mounting area on the horizontal support rod 321 is smaller than the width of the connection area. This is mainly because the wider connection area results in a larger connection area between the horizontal support rod 321 and the vertical support leg 322, leading to higher connection stability, improved service life of the voltage application device 3, and reduced maintenance and replacement costs. The narrower width of the probe 31 mounting area is due to two factors: firstly, the probe 31 is thinner, thus requiring a smaller mounting area on the horizontal support rod 321, and the narrower width saves on materials; secondly, when the probe 31 acts on the solar cell string 2, the horizontal support rod 321 obstructs the solar cell string 2. Therefore, the narrower width of the horizontal support rod 321 corresponding to the probe 31 mounting area reduces the obstruction area of ​​the horizontal support rod 321 on the solar cell string 2, allowing the laser emitter 41 to fully act on the solar cell string 2.

[0061] In one alternative embodiment, the lifting height of the second lifting shaft 322 is lower than the height of the laser-induced sintering device 4, so that the probe 31 and the laser emitter 41 can act on the solar cell string 2 in the same area, thereby helping to increase the efficiency of production and processing.

[0062] It is understandable that the lifting structure of the second lifting shaft 322 can be the same as or different from the lifting structure of the first lifting shaft 121.

[0063] Furthermore, the probe is an elastic probe 31. Therefore, when the probe 31 comes into contact with the solar cell string 2, it contracts to some extent due to the influence of external forces, reducing the force it experiences and thus helping to improve its service life. The probe 31 is made of a composite material with an internal copper metal layer and a gold-plated surface, while the transverse support rod 321 is made of acrylic or resin, which helps to better mount the probe 31 onto the transverse support rod 321 and reduces the difficulty of processing.

[0064] To improve the service life of the laser emitter 41, the laser-induced sintering device 4 also includes a laser head support 42, which is connected to the laser emitter 41. The laser head support 42 provides support and protection for the laser emitter 41, thereby improving its service life and reducing maintenance and replacement costs.

[0065] It is understandable that the voltage application device 3 and the laser-induced sintering device 4 can be applied to the entire solar cell string 2 or to individual cells that make up the solar cell string 2. When applied to individual cells, increasing the number of laser-induced sintering devices 4 and voltage application devices 3 can increase the efficiency of production and processing. When applied directly to individual cells, the processing accuracy is higher and the processing effect is better.

[0066] Furthermore, such as Figure 2 , Figure 5 As shown, the processing system for the solar cell string 2 also includes a slide rail 6, which is located on the side of the supporting body 1; the voltage application device 3 is slidably connected to the slide rail, and / or, the laser-induced sintering device 4 is slidably connected to the slide rail 6. It can be understood that when the slide rail is only located on one side of the supporting body 1, the connection relationship between the slide rail 6 and the voltage application device 3 and the laser-induced sintering device 4 includes: only the voltage application device 3 is slidably connected to the slide rail 6, or only the laser-induced sintering device 4 is slidably connected to the slide rail 6, or both the laser-induced sintering device 4 and the voltage application device 3 are slidably connected to the slide rail 6; when the slide rail 6 is located on both sides of the supporting body 1, if the laser-induced sintering device 4 and the voltage application device 3 can be located on different sides of the slide rail 6, the sliding space of the voltage application device 3 and the laser-induced sintering device 4 is larger and the obstruction is smaller, thus allowing them to better act on the solar cell string 2.

[0067] It is understandable that in order to enable the voltage application device 3 and the laser-induced sintering device 4 to slide on the slide rail 6, a slider 7 can be set on the voltage application device 3 and the laser-induced sintering device 4. The slider 7 enables the sliding of the two devices on the slide rail 6.

[0068] The processing procedure of the solar cell string according to the embodiments of this application will be described below.

[0069] Interconnecting strips are welded to the main grid lines on the light-receiving and back-light-receiving sides of the solar cells. The front electrodes of the solar cells and the back electrodes of adjacent solar cells are then interconnected via these interconnecting strips. For example, there are 8 solar cells.

[0070] Then, the solar cell string 2 after being wired together is transported to the designated position of the solar cell string processing system via the conveyor belt 11, and the support panel 122 is raised to the same plane as the conveyor belt 11 under the action of the first lifting shaft 121, so that the conveyor belt 11 is accommodated in the hollow area of ​​the support panel 122, so that the conveyor belt 11 and the support panel 122 jointly support the solar cell string to be processed; the position of the solar cell string 2 is corrected by the first corrector 51 and the second corrector 52.

[0071] Next, the voltage application device 3 slides along the slide rail 6 to above the solar cell string 2, and the probe 31 of the voltage application device 3, under the action of the second lifting shaft 322, descends to the busbar of the solar cell string 2 and contacts the busbar to apply a reverse bias voltage. The laser-induced sintering device 4 moves along the slide rail 6, so that the laser emitted by the laser emitter 41 acts on the electrode region of the solar cell string 2. After the action is completed, the laser emitter 41 and the voltage application device 3 are turned off, completing one metallization process of the solar cell string 2. There are two voltage application devices 3 and two laser-induced sintering devices 4.

[0072] Finally, under the action of the second lifting shaft 322, the probe 31 rises away from the solar cell string 2, and then under the action of the first lifting shaft 121, the support panel 122 is lowered, so that the conveyor belt 11 moves away from the hollow area of ​​the support panel 122, and the solar cell string 2 is transferred to the next process through the conveyor belt 11.

[0073] In this way, the processing system of solar cell string 2 can optimize the performance of solar cell string 2 after being wired by the welding machine, so as to reduce the series resistance of solar cell string 2, increase the fill factor, and improve the electroluminescence data of solar cell string 2, thereby optimizing the photoelectric conversion efficiency of solar cell string 2.

[0074] The foregoing has provided a detailed description of a solar cell string processing system disclosed in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the technical solutions and core inventive points of the embodiments of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A processing system for solar cell strings, characterized in that, The processing system for the solar cell string includes: A support body for holding the solar cell string; A voltage application device, comprising a probe disposed toward the carrier body, the probe being used to contact the busbars or electrodes of the solar cell string to apply a reverse bias voltage to the solar cell string; A laser-induced sintering apparatus, comprising a laser emitter disposed toward the support body, the laser emitter being used to emit laser light toward the solar cell string.

2. The solar cell string processing system according to claim 1, characterized in that, The supporting body includes: A conveyor belt for transporting the solar cell strings; A support frame includes support legs and a support panel disposed on the support legs. The support panel has a groove or a hollow area recessed into itself along the surface of the support panel. The groove or the hollow area is used to accommodate the transmission belt so that the transmission belt and the support panel are used to support the solar cell string.

3. The solar cell string processing system according to claim 2, characterized in that, The support leg is a support leg with a first lifting shaft, which is used to drive the support panel to move up and down.

4. The solar cell string processing system according to claim 2, characterized in that, The processing system for the solar cell string also includes a corrector, which includes a first corrector symmetrically arranged on both sides of the support panel along a first direction. The first corrector is used to correct the offset of the solar cell string in the first direction, where the first direction is the width direction of the support panel. The corrector also includes a second corrector located at the end of the support panel, corresponding to the transmission end of the conveyor belt. The second corrector is used to correct the offset of the solar cell string in a second direction, which is the transmission direction of the conveyor belt.

5. The solar cell string processing system according to claim 4, characterized in that, On either side of the support panel, adjacent first correctors are alternately arranged with a first spacing and a second spacing, wherein the first spacing is smaller than the second spacing and the second spacing is smaller than the length of the solar cell string along a second direction, which is the transmission direction of the transmission belt.

6. The solar cell string processing system according to claim 1, characterized in that, The voltage application device further includes a probe bracket, which includes a vertical support leg and a horizontal support rod connected to each other. The probe is mounted on the horizontal support rod, and the vertical support leg is a vertical support leg with a second lifting shaft, which is used to drive the horizontal support rod to move up and down.

7. The solar cell string processing system according to claim 1, characterized in that, The probe is an elastic probe.

8. The solar cell string processing system according to claim 1, characterized in that, The laser-induced sintering device also includes a laser head support, which is connected to the laser emitter.

9. The solar cell string processing system according to claim 1, characterized in that, The number of voltage application devices is greater than 1; and / or, The number of laser-induced sintering devices is greater than 1.

10. The solar cell string processing system according to claim 1, characterized in that, The processing system for the solar cell string also includes a slide rail, which is disposed on the side of the supporting body; The voltage application device is slidably connected to the slide rail, and / or the laser-induced sintering device is slidably connected to the slide rail.

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