Solar cell series welding device

Abstract

The utility model discloses a solar cell series welding device which comprises a supporting frame, a conveyor is arranged in the supporting frame, a series welding assembly is arranged above the conveyor, a sliding rail is arranged on one side of the supporting frame, a deviation rectifying assembly is arranged on the sliding rail in a sliding mode, and the deviation rectifying assembly comprises a shell. According to the utility model, the infrared sensor is used for detecting whether a solar cell group placed on the conveyor is aligned or not, then the infrared sensor is used for transmitting a signal to the plc controller, and the plc controller is used for detecting whether the solar cell group is aligned or not; the PLC controls the second air cylinder to drive the deviation rectifying assembly to be close to the solar cell piece sets, when the series welding assembly is used for conducting series welding on the previous batch of solar cell piece sets, the deviation rectifying assembly conducts deviation rectifying on the next batch of solar cell piece sets, and the qualified rate of the series welding process is further improved.

Description

Technical Field

[0001] This utility model relates to the field of solar cell technology, specifically to a solar cell string bonding device. Background Technology

[0002] Solar cells, also known as "solar chips" or "photovoltaic cells," are thin-film photovoltaic semiconductors that directly generate electricity using sunlight. When exposed to light under certain illumination conditions, they can instantly output voltage and, if a circuit is established, produce current. In physics, this is called photovoltaic (PV). Solar cells are devices that directly convert light energy into electrical energy through the photoelectric effect or photochemical effect. Crystalline silicon solar cells, which operate based on the photovoltaic effect, are the mainstream, while thin-film solar cells, which operate based on the photochemical effect, are still in their infancy.

[0003] The main purpose of solar cell stringing is to connect multiple solar cells into a series circuit using solder ribbons, enabling the cells to work together to effectively convert solar energy into electrical energy and output it. This process directly affects the performance and quality of solar cell modules.

[0004] The existing string welding machine's workflow generally involves the following steps: First, multiple solar cells are placed side-by-side and stacked in multiple layers. Then, a robotic arm uses negative pressure to transport a row of solar cells to a straightening mechanism for position correction. Next, a second robotic arm uses negative pressure to transport the row of solar cells to the string welding conveyor belt. Finally, the solar cells are transported to the welding position for individual welding. However, if a row of solar cells is moved by a robotic arm after being straightened, there is a certain probability that the row of solar cells will become misaligned again during transportation, leading to product defects and lowering the pass rate. Utility Model Content

[0005] The purpose of this invention is to provide a solar cell string bonding device to address the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a solar cell stringing device, comprising: a support frame, a conveyor disposed within the support frame, a stringing assembly disposed above the conveyor, a slide rail disposed on one side of the support frame, a correction assembly slidably disposed on the slide rail, the correction assembly comprising a housing, a third cylinder fixedly connected to the middle of each of the four inner walls of the housing, a push plate fixedly connected to the movable end of each of the third cylinders, the length of two push plates arranged parallel to the conveyor's conveying direction being the same as the total length of the solar cell array, the length of two push plates arranged perpendicular to the conveyor's conveying direction being greater than the total length of the solar cell array, and the two push plates arranged parallel to the conveyor's conveying direction contacting the solar cell array before the two push plates arranged perpendicular to the conveyor's conveying direction.

[0007] Furthermore, a silicone pad is fixedly connected to the side of the pusher plate near the solar cell array.

[0008] Furthermore, two symmetrically arranged infrared sensors are fixedly installed at the end of the support frame, and a PLC controller is also installed on the support frame. The infrared sensors are electrically connected to the PLC controller.

[0009] Furthermore, a second cylinder is provided on the side of the correction component to drive its movement.

[0010] Furthermore, the conveyor belt of the conveyor is provided with a number of arrayed through holes, and a negative pressure chamber is provided on the inner side of the conveyor belt of the conveyor.

[0011] Furthermore, the string welding assembly includes a mounting bracket, a first cylinder is mounted on the top of the mounting bracket, an aluminum plate is fixedly connected to the movable end of the first cylinder after passing through the mounting bracket, and a heating element is fixedly connected to the bottom of the aluminum plate.

[0012] The beneficial effects of the solar cell string bonding device provided by this utility model in the above technical solution are as follows:

[0013] This invention uses an infrared sensor to detect whether the solar cell array placed on the conveyor is aligned. The infrared sensor then transmits the signal to the PLC controller, which controls the second cylinder to drive the correction component closer to the solar cell array. While the stringing assembly is stringing the previous batch of solar cell arrays, the correction component corrects the alignment of the next batch of solar cell arrays, further improving the pass rate of the stringing process.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0015] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 A structural schematic diagram provided for an embodiment of this utility model;

[0018] Figure 2 A front view provided for an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the correction component provided in an embodiment of the present utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Support frame; 11. Mounting frame; 2. Conveyor; 3. Slide rail; 4. String welding assembly; 41. Aluminum plate; 42. Heating element; 43. First cylinder; 5. Correction assembly; 51. Housing; 52. Third cylinder; 53. Push plate; 54. Silicone pad; 6. Infrared sensor; 7. Negative pressure chamber; 8. Solar cell array; 9. Second cylinder; 10. PLC controller. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0023] Please see Figures 1-3A solar cell stringing device includes: a support frame 1, a conveyor 2 disposed within the support frame 1, a plurality of arrayed through holes on the conveyor belt of the conveyor 2, a negative pressure chamber 7 disposed on the inner side of the conveyor belt of the conveyor 2, the negative pressure chamber 7 being attached to the inner side of the conveyor belt of the conveyor 2, an air pump disposed inside the conveyor 2 and communicating with the negative pressure chamber 7, and an air extraction hole also being disposed on the top of the negative pressure chamber 7. When the air pump is working, external gas enters the air pump through the through holes on the conveyor belt of the conveyor 2 and the air extraction hole on the top of the negative pressure chamber 7, creating a negative pressure on the surface of the conveyor belt of the conveyor 2, thereby adsorbing the solar cell array 8 placed on the conveyor belt. A stringing assembly 4 is installed above the conveyor 2. The stringing assembly 4 includes a mounting frame 11, the bottom of which is fixedly connected to the top of the support frame 1. A first cylinder 43 is installed on the top of the mounting frame 11. The movable end of the first cylinder 43 passes through the mounting frame 11 and is fixedly connected to an aluminum plate 41. A heating element 42 is fixedly connected to the bottom of the aluminum plate 41. As the conveyor 2 transports the solar cell array 8 to below the aluminum plate 41, the conveyor 2 stops working, and the first cylinder 43 drives the aluminum plate 41 to move downward, so that the aluminum plate 41 in the working state performs stringing on adjacent solar cells in the solar cell array 8. After the stringing is completed, the first cylinder 43 drives the aluminum plate 41 to move upward. The support frame 1 is reset. A slide rail 3 is provided on one side of the support frame 1. The slide rail 3 is fixedly installed on the support frame 1. A correction component 5 is slidably arranged on the slide rail 3. The correction component 5 includes a housing 51. A third cylinder 52 is fixedly connected to the middle of the inner wall of each of the four sides of the housing 51. A push plate 53 is fixedly connected to the movable end of each third cylinder 52. The length of the two push plates 53 arranged parallel to the conveying direction of the conveyor 2 is the same as the total length of the solar cell array 8. The length of the two push plates 53 arranged perpendicular to the conveying direction of the conveyor 2 is greater than the total length of the solar cell array 8. The two push plates 53 arranged parallel to the conveying direction of the conveyor 2 are arranged before the two push plates 53 arranged perpendicular to the conveying direction of the conveyor 2. Two push plates 53 are placed in contact with the solar cell array 8. The two push plates 53, which are horizontally arranged with the conveyor 2, first clamp the solar cell array 8, so that the two sides of the multiple solar cells in the solar cell array 8 are aligned. Then, the two push plates 53, which are perpendicular to the conveyor 2, are driven by their respective third cylinders 52 to push the multiple solar cells in the solar cell array 8 until they are close to each other, thus completing the correction work of the solar cell array 8. A silicone pad 54 is fixedly connected to the side of the push plate 53 near the solar cell array 8. By setting the silicone pad 54, the damage of the push plate 53 to the solar cells in the solar cell array 8 can be reduced.

[0024] Furthermore, two symmetrically arranged infrared sensors 6 are fixedly installed at the end of the support frame 1. A PLC controller 10 is also installed on the support frame 1. The infrared sensors 6 and the PLC controller 10 are electrically connected and connected in series by wires. A second cylinder 9 is provided on the side of the correction component 5 to drive its movement. The transmitter and receiver of the infrared sensor 6 are respectively installed at both ends of the support frame 1. When the arrangement is not neat, the signal emitted by the transmitter of the infrared sensor 6 will be blocked by the irregularly arranged solar cells in the solar cell array 8. At this time, the PLC controller 10 receives the signal and issues a correction command to the correction component 5. The second cylinder 9 will push the correction component 5 to the top of the solar cell array 8. The solar cell array 8 will be pushed from four directions by four push plates 53, so that the multiple solar cells in the solar cell array 8 are rearranged neatly.

[0025] Specifically, this invention uses an infrared sensor 6 to detect whether the solar cell array 8 placed on the conveyor 2 is aligned. The infrared sensor 6 then transmits the signal to the PLC controller 10, which controls the second cylinder 9 to drive the correction component 5 closer to the solar cell array 8. While the string welding component 4 is used to string weld the previous batch of solar cell array 8, the correction component 5 corrects the alignment of the next batch of solar cell array 8, further improving the pass rate of the string welding process.

[0026] In this utility model, reference Figures 1 to 3 First, the robotic arm uses negative pressure adsorption to transfer the solar cell array 8 onto the conveyor 2. The infrared sensor 6 detects the neatness of the solar cell array 8. If the array is not neat, the PLC controller 10 controls the correction component 5 to correct the alignment of the solar cell array 8. While the four push plates 53 are correcting the alignment of the solar cell array 8, the string welding component 4 is performing string welding on the previous batch of solar cell array 8. This ensures that the correction component 5 corrects the alignment of the solar cell array 8 and the string welding component 4 perform string welding without affecting each other.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A solar cell stringing apparatus, comprising: A support frame (1) is characterized in that: a conveyor (2) is provided inside the support frame (1), a string welding assembly (4) is provided above the conveyor (2), a slide rail (3) is provided on one side of the support frame (1), and a correction assembly (5) is slidably provided on the slide rail (3). The correction assembly (5) includes a housing (51), and a third cylinder (52) is fixedly connected to the middle of the four inner walls of the housing (51). A push plate (53) is fixedly connected to the movable end of each of the third cylinders (52). The length of the two push plates (53) arranged parallel to the conveying direction of the conveyor (2) is the same as the total length of the solar cell array (8). The length of the two push plates (53) arranged perpendicular to the conveying direction of the conveyor (2) is greater than the total length of the solar cell array (8). The two push plates (53) arranged parallel to the conveying direction of the conveyor (2) contact the solar cell array (8) before the two push plates (53) arranged perpendicular to the conveying direction of the conveyor (2).

2. The solar cell string bonding device according to claim 1, characterized in that, The push plate (53) is fixedly connected to a silicone pad (54) on the side near the solar cell array (8).

3. The solar cell string bonding device according to claim 1, characterized in that, Two symmetrically arranged infrared sensors (6) are fixedly installed at the end of the support frame (1). A PLC controller (10) is also installed on the support frame (1). The infrared sensors (6) are electrically connected to the PLC controller (10).

4. The solar cell string bonding device according to claim 1, characterized in that, The side of the correction component (5) is provided with a second cylinder (9) to drive its movement.

5. A solar cell string bonding device according to claim 1, characterized in that, The conveyor belt of the conveyor (2) has several arrayed through holes, and a negative pressure chamber (7) is provided on the inner side of the conveyor belt of the conveyor (2).

6. A solar cell string bonding apparatus according to claim 5, characterized in that, The string welding assembly (4) includes a mounting bracket (11), on the top of which a first cylinder (43) is mounted. The movable end of the first cylinder (43) passes through the mounting bracket (11) and is fixedly connected to an aluminum plate (41). A heating element (42) is fixedly connected to the bottom of the aluminum plate (41).

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