A photovoltaic cell string manufacturing apparatus

Abstract

This invention discloses a photovoltaic cell string manufacturing equipment, which includes a feeding mechanism, a ribbon feeding mechanism, a fixture loading and unloading mechanism, a welding mechanism, a coating and curing mechanism, and a cell string conveying mechanism. Through a traction mechanism and a robotic arm, multi-strand ribbons cut to the required process length and cell sheets are sequentially placed, allowing adjacent cells to be pre-welded into a cell string by the multi-strand ribbons on their front and back sides. In subsequent processes, adhesion points are coated on the front and back of the cell string, and curing thoroughly eliminates the risk of poor overlap. This eliminates the need for composite films and PAD points on the front and back of the cells, reducing shading on the photovoltaic cell surface and the use of silver paste, thus significantly reducing costs.

Description

Technical Field

[0001] This invention relates to the field of solar photovoltaic equipment manufacturing technology, and more specifically, to a solar photovoltaic high-speed adhesive coating cell string manufacturing equipment. Background Technology

[0002] In the domestic and international solar photovoltaic equipment manufacturing field, existing technologies include solar photovoltaic string welding machines. During the manufacturing process of the battery string, the main busbar of the solar cell is welded to the metal wire using silver paste. The alignment requirements between the metal wire and the main busbar of the solar cell are high, resulting in a small welding contact area and generally poor welding performance. Furthermore, the silver paste welding also has a significant impact on light transmittance.

[0003] Another technology is gridless welding, which relies on transparent composite films and metal wires to form individual cell string units, which are then connected to the cells. In the subsequent manufacturing process of photovoltaic modules, the low-melting-point alloy on the surface of the metal wires is laminated to complete the connection with the grid lines. The existing technology for manufacturing individual cell string units has a high cost, poor temperature resistance and light transmittance of the internal composite film, and unstable contact between the multiple metal wires and the silver paste, which reduces the conductivity. Summary of the Invention

[0004] 1. The technical problem that the invention aims to solve

[0005] Existing traditional stringing techniques suffer from high welding precision requirements and high silver paste costs. Furthermore, gridless stringing techniques require composite films, which cause significant optical obstruction and are also expensive, hindering technology promotion and advancement. Welding between solar cells can easily lead to decreased light transmittance, reduced conductivity, and insufficient weld strength. This invention provides a battery string manufacturing device; by designing the structure and connection method of the welding strips for stringing solar cells, it effectively solves the problems of decreased light transmittance and reduced conductivity of solar cells.

[0006] 2. Technical Solution

[0007] To achieve the above objectives, the present invention provides a photovoltaic cell string manufacturing equipment, comprising: a feeding mechanism including a material box conveyor track, a material box lifting mechanism, a cell feeding mechanism, a cell conveyor track, and a cell loading mechanism; a welding strip feeding mechanism including an unwinding mechanism, a cutting mechanism, and a traction mechanism; a fixture loading and unloading mechanism including a fixture loading mechanism and a fixture unloading mechanism; a welding mechanism for welding welding strips and cells to form a cell string; a coating and curing mechanism including a front coating and curing mechanism, a cell string flipping mechanism, and a back coating and curing mechanism; and a cell string conveying mechanism including a belt conveyor structure.

[0008] As a further improvement of the present invention, the material box conveying track adopts belt drive, on which a battery cell material box is placed, and a number of battery cells are stacked inside the battery cell material box. One end of the material box conveying track is connected to the material box lifting mechanism.

[0009] As a further improvement of the present invention, the material box lifting mechanism is provided with a lifting platform, the lifting platform is provided with a transmission belt, the transmission belt is aligned with the material box conveying track, and the battery cell material box moves from the material box conveying track to the lifting platform.

[0010] As a further improvement of the present invention, the output end of the battery cell feeding mechanism is connected to a gripping plate, and suction nozzles are installed at both ends of the gripping plate. The gripping plate is located above the lifting platform and is always parallel to the lifting platform. The suction nozzles grip the battery cells and place them at one end of the battery cell conveying track. A CCD positioning platform is provided at the other end of the battery cell conveying track.

[0011] As a further improvement of the present invention, the manufacturing equipment also includes a robotic arm, which is installed at the location of the CCD positioning platform, and the battery cell loading mechanism is a robotic arm suction cup module on the machine, which is used to grasp and place the battery cells.

[0012] As a further improvement of the present invention, the manufacturing equipment also includes a robotic arm, which is installed at the location of the CCD positioning platform. The fixture loading mechanism includes a robotic arm magnetic module on the robotic arm, and the robotic arm magnetic block is used to grasp and place the main fixture. The fixture unloading mechanism includes a main fixture unloading mechanism.

[0013] As a further improvement of the present invention, the fixture loading mechanism further includes a secondary fixture loading mechanism, and the fixture unloading mechanism further includes a secondary fixture unloading mechanism.

[0014] As a further improvement of the present invention, the fixture loading and unloading mechanism further includes a fixture positioning mechanism and a fixture return track. The auxiliary fixture unloading mechanism and the main fixture unloading mechanism grab the auxiliary fixture and the main fixture and place them on the fixture return track for return.

[0015] As a further improvement of the present invention, the welding strip feeding mechanism further includes a flux tank, the unwinding mechanism is provided with welding strip, the welding strip is a composite metal wire, the flux tank is located at one end of the unwinding mechanism, the traction mechanism pulls the welding strip through the flux tank and the cutting mechanism, the surface of the welding strip is coated with flux through the flux tank, and then cut into multiple strands of welding strip by the cutting mechanism.

[0016] As a further improvement of the present invention, the welding mechanism includes a first heating module and a second heating module, wherein the first heating module heats the bottom of the battery string and the second heating module heats the upper surface of the battery string.

[0017] As a further improvement of the present invention, both the first heating module and the second heating module adopt infrared heating.

[0018] As a further improvement of the present invention, both the front coating and curing mechanism and the back coating and curing mechanism include a coating mechanism and a curing mechanism.

[0019] As a further improvement of the present invention, the battery string flipping mechanism also includes a heating device that heats the battery string during transport.

[0020] As a further improvement of the present invention, the coating and curing mechanism includes two sets of matching battery string flipping mechanisms and back coating and curing mechanisms.

[0021] As a further improvement of the present invention, the battery string flipping mechanism is arranged adjacent to the battery string conveying mechanism. The battery string flipping mechanism places the coated and cured battery string onto the conveyor belt of the battery string conveying mechanism and transfers the manufactured battery string to the next station to complete the battery string manufacturing process.

[0022] 3. Beneficial effects

[0023] Compared with existing technologies, the technical solution provided by this invention has the following advantages: The photovoltaic string equipment of this invention produces a string consisting of at least one tail cell, one head cell, and at least one intermediate cell. During the manufacturing process, the back sides of the cells and the solder strips are welded together to form the string. A traction mechanism and a robotic arm sequentially place multi-strand metal wire cut to the required length and the cells in order, so that the front and back sides of the connected cells are pre-welded together by the multi-strand solder strips. In subsequent processes, adhesive is applied and cured to completely eliminate the risk of poor overlap. This method reduces the alignment requirements between the solder strips and the cell grid, simplifying the string manufacturing process. Simultaneously, the composite film and the PAD points on the front and back sides of the cells are eliminated, reducing surface shading of the photovoltaic cells and the use of silver paste, significantly reducing costs. Furthermore, the double-sided application and curing of adhesive enhances the bonding strength between the solder strips and the cells. Furthermore, the battery string flipping mechanism also includes a heating device that maintains the temperature during battery string handling, allowing the thermal stress of the welding strip to be released slowly and ensuring a certain temperature. This prevents a large temperature difference between the welding process and the flipping station, ensuring that significant stress is released after coating, thereby improving the stability of the battery string's electrical performance. Furthermore, this photovoltaic battery string manufacturing equipment includes two battery string flipping mechanisms and a back coating and curing mechanism, which can quickly apply adhesive points to the back of the battery string and cure them, increasing production capacity. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a photovoltaic cell string manufacturing equipment.

[0025] Figure 2 A three-dimensional structural diagram of the material box conveyor track.

[0026] Figure 3 This is a three-dimensional structural diagram of the material box lifting mechanism.

[0027] Figure 4 This is a three-dimensional structural diagram of the battery cell feeding mechanism.

[0028] Figure 5 A three-dimensional structural diagram of the solar cell transport track.

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the robotic arm.

[0030] Figure 7 A three-dimensional structural diagram of the jig return runway.

[0031] Figure 8 This is a three-dimensional structural diagram of the main fixture lowering mechanism.

[0032] Figure 9This is a three-dimensional structural diagram of the traction mechanism.

[0033] Figure 10 This is a three-dimensional structural diagram of the cutting mechanism.

[0034] Explanation of the labels in the diagram:

[0035] 100. Feeding mechanism; 101. Material box conveyor track; 102. Material box lifting mechanism; 103. Battery cell feeding mechanism; 104. Battery cell conveyor track; 105. Robotic arm; 101a. Battery cell material box; 102a. Lifting platform; 103a. Gripping plate; 103a-1. Suction nozzle; 104a. Positioning platform; 105a. Robotic arm suction cup module; 105b. Robotic arm magnetic module;

[0036] 200. Welding strip feeding mechanism; 201. Unwinding mechanism; 202. Flux tank; 203. Traction mechanism; 204. Cutting mechanism;

[0037] 300. Fixture loading / unloading mechanism; 301. Fixture positioning mechanism; 302. Fixture return track; 303. Main fixture unloading mechanism; 304. Auxiliary fixture loading mechanism; 305. Auxiliary fixture unloading mechanism;

[0038] 400. Welding mechanism;

[0039] 500. Coating and curing mechanism; 501. Front coating and curing mechanism; 502. Battery string flipping mechanism; 503. Back coating and curing mechanism;

[0040] 600. Battery string conveying mechanism. Detailed Implementation

[0041] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0042] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0043] Example 1

[0044] The first embodiment of the present invention provides a photovoltaic cell string manufacturing device, the overall device drawing of which is shown below. Figure 1 It includes a feeding mechanism 100, which is installed on one side of the frame, and includes a material box conveying track 101, a material box lifting mechanism 102, a battery cell feeding mechanism 103, a battery cell conveying track 104, and a robotic arm suction cup module 105a, wherein the robotic arm suction cup module 105a can grasp and place the battery cells.

[0045] The welding strip feeding mechanism 200 includes an unwinding mechanism 201, a cutting mechanism 204, and a traction mechanism 203; and,

[0046] The fixture loading and unloading mechanism 300 includes a fixture loading mechanism, a fixture unloading mechanism, a fixture positioning mechanism 301, and a fixture return runway 302;

[0047] The welding mechanism 400 includes a first heating module and a second heating module. The first heating module heats the bottom of the battery string, and the second heating module heats the upper surface of the battery string.

[0048] The coating and curing mechanism 500 includes a front coating and curing mechanism 501, a battery string flipping mechanism 502, and a back coating and curing mechanism 503.

[0049] And, the battery string conveying mechanism 600, including a belt conveyor structure.

[0050] The feeding mechanism 100 and the welding mechanism 400 run in parallel. The robotic arm 105 is located in the middle of the entire frame to facilitate the gripping and placement of the battery cells and main fixture by the robotic arm suction cup module 105a and the robotic arm magnetic module 105b.

[0051] Specifically, refer to Figure 1 and 2 The feeding mechanism 100 uses a belt drive for the material box conveyor track 101, on which a battery cell material box 101a is placed. Several battery cells are stacked inside the battery cell material box 101a. One end of the material box conveyor track 101 is connected to the material box lifting mechanism 102. (Refer to...) Figure 3 The material box lifting mechanism 102 is equipped with a lifting platform 102a, and a transmission belt is mounted on the lifting platform 102a. The transmission belt is aligned with the material box conveying track 101, and the battery cell material boxes are transported from the material box conveying track 101 to the lifting platform 102a. (Refer to...) Figure 4The output end of the battery cell feeding mechanism 103 is connected to a gripping plate 103a. Suction nozzles 103a-1 are installed at both ends of the gripping plate 103a. The gripping plate 103a is located above and always parallel to the lifting platform 102a. The suction nozzles 103a-1 grip the battery cells in the battery cell cassette 101a and place them at one end of the battery cell conveyor track 104. A CCD positioning platform 104a is located at the other end of the battery cell conveyor track 104, and a robotic arm 105 is installed at the location of the CCD positioning platform. During operation, the battery cells are simultaneously stacked and fed into pre-made cassettes. Through cassette lifting, segmentation, and gripping, the battery cells are placed onto the conveyor belt for transport. The battery cells undergo CCD detection and are then positioned on the positioning platform. When all the battery cells in the battery cell cassette 101a have been picked up by the battery cell loading mechanism 103, the cassette lifting mechanism 102 descends, transporting the battery cell cassette 101a to the cassette return track located below the cassette conveying track 101 for return. Furthermore, the battery cell loading mechanism is a robotic arm suction cup module 105a on the mechanical assembly 105, which is used to pick up battery cells and place them on the battery string processing platform station.

[0052] Furthermore, the welding strip feeding mechanism 200 includes an unwinding mechanism 201, a flux reservoir 202, a cutting mechanism 204, and a traction mechanism 203. The unwinding mechanism 201 has welding strips, which are composite metal wires. The flux reservoir 202 is located at one end of the unwinding mechanism. The traction mechanism 203 pulls the welding strip through the flux reservoir 202 and the cutting mechanism 204. The surface of the welding strip is coated with a flux layer of micron thickness by the flux reservoir 202, and then cut into multiple strands with flux by the cutting mechanism 204. During operation, the multiple strands of welding strip are cut into the required lengths of the first, last, and middle strands of welding strips by the unwinding mechanism 201, the flux reservoir, the cutting mechanism 204, and the traction mechanism 203, and placed at the battery string processing platform station. The length of the first and last strands of welding strips exceeds the length of the battery cells to facilitate the external electrical lead-out of the battery string. The intermediate multi-strand welding strip is cut by a cutting mechanism to cut the length between any two adjacent cells into equal-length intermediate multi-strand welding strips, which then electrically connect the adjacent cells.

[0053] Furthermore, the fixture loading and unloading mechanism includes a fixture loading mechanism, a fixture unloading mechanism, a fixture positioning mechanism 301, and a fixture return track 302. The fixture loading mechanism includes a robotic arm magnetic module 105b on the robotic arm 105. The robotic arm magnetic module 105b serves as the main fixture loading mechanism, used to grip and place the main fixture. The fixture unloading mechanism includes a main fixture unloading mechanism 303. During operation, the robotic arm magnetic module 105b grips the main fixture and, in conjunction with the welding strip feeding mechanism, completes the placement of the welding strip, battery cells, and main fixture. The fixture positioning mechanism 301 is located at one end of the fixture return track 302, and the main fixture unloading mechanism 303 is located at the other end of the fixture return track 302. The fixture positioning mechanism 301 is connected to the CCD positioning platform 104a.

[0054] Optionally, the fixture loading mechanism may further include a secondary fixture loading mechanism 304, and the fixture unloading mechanism may further include a secondary fixture unloading mechanism 305. The secondary fixture loading mechanism 304 grips the secondary fixture and places it on the battery cell to ensure close contact between the solder strip and the battery cell during welding and coating processes.

[0055] Specifically, refer to Figure 1 As shown, the multi-strand welding strips cut to the required length are placed on the battery string processing platform station by the traction mechanism, and the battery cells are picked up and placed by the robotic suction cup module 105a. The steps of cutting and placing welding strips and placing battery cells are repeated to form a battery string on the battery string processing platform station. Specifically, the welding strips cut to the required length are first moved to the working position by the traction mechanism. The battery cell is then picked up and placed on the welding strip by the robotic suction cup module 105a, and moved to the next working position. After being cut by the unwinding mechanism 201, flux tank 202, cutting mechanism 204 and traction mechanism 203, the intermediate multi-strand welding strip is formed. It is then placed on the upper surface of the battery cell by the traction mechanism. The intermediate multi-strand welding strip includes a front end part and a rear end part. The front end part of the welding strip is located on the upper surface of the battery. The robotic suction cup module 105a picks up the battery cell and places it on the rear end part of the multi-strand welding strip, so that the rear end part of the welding strip is in close contact with the back of the battery cell. At the same time, the robotic magnetic module 105b picks up the main fixture and places it on the surface of the battery cell on which the front end part of the welding strip has been stacked, so that the front end part of the welding strip on the surface of the battery cell and the battery cell are in close contact. The battery string conveyor belt moves to the next station, and the auxiliary fixture loading mechanism grabs the auxiliary fixture and places it on both sides of the main fixture of the battery cell, so that the upper and lower multi-strand welding strips of the battery cell are tightly attached to the battery cell. The battery string conveyor belt then moves to the welding station.

[0056] In this embodiment, the battery string welding platform includes a welding mechanism 400, which comprises a first heating module and a second heating module. The first heating module heats the bottom of the battery string, and the second heating module heats the upper surface of the battery string. The heating modules can employ infrared heating to weld the upper and lower multi-strand welding strips to the front and back of the battery cells to form the battery string. The platform can use thermocouples, pyrometers, etc., to provide temperature feedback for all heating elements and can display the trend of measurement data on an HMI, ensuring the stability of the welding temperature. Other welding methods can also be used, such as microwave heating or laser heating.

[0057] After the welding process, the coating and curing mechanism 500 performs a coating and curing process, applying adhesion points at designated locations on the battery string. These designated locations can be on the fine grid lines or between the two sides of the fine grid lines. The cured adhesion points serve to bind the solder strips. Optionally, during the application of adhesion points at the designated locations, a camera can be used for assisted positioning to ensure that the adhesion points form a good connection with the solder strips.

[0058] The coating and curing mechanism 500 includes a front coating and curing mechanism 501, a battery string flipping mechanism 502, and a back coating and curing mechanism 503. During the front coating process of the battery string, the solder strips and battery cells, after being processed by the welding process, have formed a weld, so the main and auxiliary fixtures can be removed to carry out the coating operation.

[0059] Preferably, considering operational stability, and ensuring tight adhesion between the solder ribbon and the surface of the battery cell while maintaining the solder ribbon and battery cell in a constrained state before the coating adhesion point is fixed, and without interfering with the operation of the coating mechanism, coating can also be performed using a fixture. Specifically, when coating with a fixture, one of the main fixture and the auxiliary fixture can be ensured to be in contact with the battery cell for coating; alternatively, at least one of the main fixture and the auxiliary fixture can be hollowed out to allow for coating with the fixture at the hollowed-out position; or a combination of both methods can be used, ensuring that at least one fixture is in contact with the battery cell during the coating process. After the front coating and curing operation is completed on the entire front of the battery string, the battery string is flipped using the battery string flipping mechanism 502. The flipped battery string is located below the back coating and curing mechanism 503, which applies the coating adhesion point to the back of the battery string and cures it.

[0060] Optionally, the battery string flipping mechanism 503 also includes a heating device, which can maintain the battery string within a certain temperature range during handling, allowing the metal thermal stress to be released slowly and ensuring a certain temperature, within the range of 40-140℃. This ensures that the temperature difference between the welding process and the flipping station is not too large, and that significant stress is released after the adhesion points have solidified. It should be noted that after welding, the weld strip and the grid form a stable connection, and the bonding force is greater than the bonding force between the grid and the battery cell.

[0061] Optionally, the coating and curing mechanism 500 includes two sets of battery string flipping mechanisms 502 and a back coating and curing mechanism 503, as shown in the reference. Figure 1 The battery string flipping mechanism 502 and the back coating and curing mechanism 503 are respectively arranged on both sides of the battery string conveying mechanism 600, or they can both be located on one side of the battery string conveying mechanism 600. The above embodiment can achieve the effect of quickly applying and curing the adhesive points on the back of the battery string, thereby improving production capacity.

[0062] In addition, the battery string flipping mechanism 503 is arranged adjacent to the battery string conveying mechanism 600. After the adhesion points on the back of the battery string are cured, the battery string is placed on the conveyor belt of the battery string conveying mechanism 600 by the battery string flipping mechanism 503, and the manufactured battery string is transferred to the next station to complete the battery string manufacturing process.

[0063] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A photovoltaic cell string manufacturing equipment, characterized in that: include, The feeding mechanism (100) includes a material box conveying track (101), a material box lifting mechanism (102), a battery cell feeding mechanism (103), a battery cell conveying track (104), and a battery cell loading mechanism; The welding strip feeding mechanism (200) includes an unwinding mechanism (201), a cutting mechanism (204), and a traction mechanism (203). The fixture loading and unloading mechanism (300) includes a fixture loading mechanism and a fixture unloading mechanism; A welding mechanism (400) is used to weld the welding strip and the battery cell to form a battery string; The coating and curing mechanism (500) includes a front coating and curing mechanism (501), a battery string flipping mechanism (502), and a back coating and curing mechanism (503). The battery string conveying mechanism (600) includes a belt conveyor structure; The welding mechanism (400) includes a first heating module and a second heating module, wherein the first heating module heats the bottom of the battery string and the second heating module heats the upper surface of the battery string. Both the front coating and curing mechanism (501) and the back coating and curing mechanism (503) include a coating mechanism and a curing mechanism; The battery string flipping mechanism (502) also includes a heating device that heats the battery string during transport. One end of the material box conveying track (101) is connected to the material box lifting mechanism (102); The material box lifting mechanism (102) is equipped with a lifting platform (102a), and the battery cell material box moves from the material box conveying track (101) to the lifting platform (102a); The output end of the battery cell feeding mechanism (103) is connected to a gripping plate (103a). The gripping plate (103a) grips the battery cells and places them at one end of the battery cell conveying track (104). The other end of the battery cell conveying track (104) is provided with a CCD positioning platform (104a). The photovoltaic cell string manufacturing equipment also includes a robotic arm (105), which is installed at the location of the CCD positioning platform (104a); The unwinding mechanism (201) is provided with the welding strip, and the traction mechanism (203) pulls the welding strip through the cutting mechanism (204) and cuts it into multiple strands of welding strip.

2. The photovoltaic cell string manufacturing equipment according to claim 1, characterized in that: The material box conveyor track (101) is driven by a belt, on which a battery cell material box (101a) is placed, and a number of battery cells are stacked inside the battery cell material box (101a).

3. The photovoltaic cell string manufacturing equipment according to claim 2, characterized in that: The lifting platform (102a) is equipped with a transmission belt, which is aligned with the material box conveyor track (101).

4. The photovoltaic cell string manufacturing equipment according to claim 3, characterized in that: The gripping plate (103a) is equipped with suction nozzles (103a-1) at both ends. The gripping plate (103a) is located above the lifting platform (102a) and is always parallel to the lifting platform (102a). The suction nozzles (103a-1) grip the battery cells and place them at one end of the battery cell conveying track (104).

5. The photovoltaic cell string manufacturing equipment according to claim 1, characterized in that: The battery cell loading mechanism is a robotic arm suction cup module (105a) on a robotic arm (105), which is used to grip and place the battery cells.

6. The photovoltaic cell string manufacturing equipment according to claim 1, characterized in that: The fixture loading mechanism includes a robotic arm magnetic module (105b) on a robotic arm (105), the robotic arm magnetic module (105b) being used to grasp and place the main fixture, and the fixture unloading mechanism includes a main fixture unloading mechanism (303).

7. The photovoltaic cell string manufacturing equipment according to claim 6, characterized in that: The fixture loading mechanism also includes a secondary fixture loading mechanism (304), and the fixture unloading mechanism also includes a secondary fixture unloading mechanism (305).

8. The photovoltaic cell string manufacturing equipment according to claim 7, characterized in that: The fixture loading and unloading mechanism (300) further includes a fixture positioning mechanism (301) and a fixture return track (302). The auxiliary fixture unloading mechanism (305) and the main fixture unloading mechanism (303) grab the auxiliary fixture and the main fixture and place them on the fixture return track (302) for return.

9. The photovoltaic cell string manufacturing equipment according to claim 1, characterized in that: The welding strip feeding mechanism (200) also includes a flux tank (202). The welding strip is a composite metal wire. The flux tank (202) is located at one end of the unwinding mechanism. The traction mechanism (203) pulls the welding strip through the flux tank (202) and the cutting mechanism (204). The surface of the welding strip is coated with flux by the flux tank (202) and then cut into multiple strands by the cutting mechanism (204).

10. The photovoltaic cell string manufacturing equipment according to claim 1, characterized in that: The welding mechanism (400) is heated by infrared heating.

11. The photovoltaic cell string manufacturing equipment according to claim 1, characterized in that: The coating and curing mechanism (500) includes two sets of matching battery string flipping mechanisms (502) and back coating and curing mechanisms (503).

12. The photovoltaic cell string manufacturing equipment according to claim 1, characterized in that: The battery string flipping mechanism (502) is arranged adjacent to the battery string conveying mechanism (600). The battery string flipping mechanism (502) places the coated and cured battery string on the conveyor belt of the battery string conveying mechanism (600) and transfers the manufactured battery string to the next station to complete the battery string manufacturing process.

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