A photovoltaic module automatic tin pasting device and automatic tin pasting method

Abstract

The application discloses a kind of photovoltaic module automatic tin paste equipment and automatic tin paste method, and automatic tin paste method includes the following steps: the first step, photovoltaic module's fetching material;Second step, photovoltaic module's feeding;Third step, point tin paste;The fourth step, tin block's arrangement;The fifth step, paste tin block;The sixth step, first visual inspection;The seventh step, loop welding;The eighth step, second visual inspection;The ninth step, discharging.The photovoltaic module automatic tin paste equipment and automatic tin paste method, its equipment is completely replaced by machine, realizes the fixed position of tin storage operation, guarantees the uniformity of thickness and the fixity of position, satisfies the needs of component client automatic welding, improves subsequent welding efficiency;Process method is scientific and reasonable, operation efficiency is high, can significantly improve processing efficiency and processing quality, increase economic benefits.

Description

Technical Field

[0001] This invention relates to the technical field of tinning, and in particular to an automatic tinning device and method for photovoltaic modules. Background Technology

[0002] With the continuous development of society, solar energy, as a new energy material, has been widely used. In the solar energy industry, photovoltaic modules are frequently used. Photovoltaic modules, also known as diode modules, are the main electronic raw materials for photovoltaic junction boxes. During the production process, pre-soldering is usually done in the solder reservoir of the photovoltaic module according to the needs of the photovoltaic module manufacturer. This facilitates the direct soldering of the busbar to the diode module during the junction box installation process. Currently, the pre-soldering is done manually by the junction box manufacturer using a soldering iron and solder wire during the junction box production process. Some factories use semi-automatic soldering. However, regardless of the method used, the production efficiency is relatively low, and the labor consumption is high. More seriously, the insurmountable drawback is that using a soldering iron and solder wire for soldering makes it difficult to ensure product consistency, resulting in uneven thickness and difficulty in precise positioning. The amount of solder stored is also limited, which cannot guarantee that the amount of solder stored will meet the automated soldering requirements of the module end customers. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in order to solve the problems existing in the background art, an automatic tin-applying device and an automatic tin-applying method for photovoltaic modules are provided. The device completely replaces manual labor by machine, realizes tin storage operation at a fixed position, ensures thickness uniformity and position fixation, and meets the needs of automated welding of the module client.

[0004] The technical solution adopted by this invention to solve its technical problem is: an automatic tinning method for photovoltaic modules, comprising the following steps:

[0005] Step 1: Obtaining photovoltaic modules;

[0006] Step 2: Loading the photovoltaic modules;

[0007] Step 3: Apply solder paste;

[0008] Step 4, Solder block arrangement: Secure the solder block turnover fixture in the tray with a wrench. The solder blocks are arranged in the groove of the solder block turnover fixture by the vibration mechanism set at the bottom of the tray and the reciprocating swing of the tray. This design allows the solder blocks to be arranged quickly in the solder block turnover fixture, which is convenient for subsequent solder block application operations.

[0009] Step 5: Apply solder blocks;

[0010] Step 6: First visual inspection;

[0011] Step 7: Circuit welding;

[0012] Step 8: Second visual inspection;

[0013] Step 9: Unloading.

[0014] An automatic tinning device for photovoltaic modules, comprising a photovoltaic module feeding component, a photovoltaic module loading component, a solder paste application component, a solder block application component, and a reflow soldering component; the photovoltaic module feeding component is disposed above the photovoltaic module loading component; one end of the solder paste application component is connected to the photovoltaic module loading component, the other end of the solder paste application component is connected to the solder block application component, and one side of the solder block application component is connected to the reflow soldering component.

[0015] To further specify, in the above technical solution, the photovoltaic module material handling assembly includes a first base, a first guide rail assembly, a push screw, a screw sleeve, a material handling base, a first telescopic cylinder, a fixed plate, a first suction nozzle assembly, and a horizontal telescopic cylinder. The first base is fixed on the workbench, the first guide rail assembly is installed on the upper surface of the first base, the push screw is disposed between the first guide rail assemblies, one end of the push screw is externally connected to a drive motor, the push screw is threadedly connected to a screw sleeve, the material handling base is installed on the upper part of the screw sleeve, the horizontal telescopic cylinder is installed on one side of the material handling base, the telescopic end of the horizontal telescopic cylinder is fixed to the fixed plate by a connecting block, and the first suction nozzle assembly is provided on the lower end of one side of the fixed plate. This design facilitates the rapid removal of the photovoltaic module from the plastic tube.

[0016] To further specify, in the above technical solution, the photovoltaic module feeding assembly includes a second base, a feeding cylinder, a push rod, a push rod cylinder, a push rod cylinder seat, and a mounting bracket; the second base is mounted on a workbench, the mounting bracket is vertically arranged on the upper surface of the second base, the feeding cylinder is vertically arranged on one side of the upper surface of the second base, the push rod cylinder seat is mounted on the second base, the push rod cylinder is vertically mounted on the push rod cylinder seat, and the telescopic end of the push rod cylinder is connected to the push rod; this enables rapid feeding and facilitates material handling and arrangement on the module tray.

[0017] To further specify, in the above technical solution, the solder paste application assembly includes a substrate, a sliding plate, a solder paste tube, a high-pressure pusher block, a fixing seat, and a needle assembly; the lower end of the sliding plate is slidably mounted on the substrate via a slider, the solder paste tube is vertically mounted on one side of the sliding plate, the upper part of the solder paste tube is externally connected to the high-pressure pusher block, the solder paste tube is mounted on the sliding plate via the fixing seat, and the needle assembly is mounted on the lower end of the solder paste tube.

[0018] To further specify, in the above technical solution, the needle assembly includes an upper cover, a lower cover, and a needle; both the upper cover and the lower cover are hollow shell structures, the upper cover and the lower cover are connected by a threaded seal, and the needle is vertically disposed at the lower end of the lower cover; the needle is in communication with the interior of the lower cover.

[0019] To further specify, in the above technical solution, a solder paste depletion detection sensor is also provided on one side of the fixing base relative to the solder paste tube; it can be used for rapid monitoring of the solder paste position to avoid depletion.

[0020] To further specify, in the above technical solution, the solder block assembly includes a third base, a solder block tray, a module tray, a power mechanism, a second guide rail assembly, a mounting plate, a vertical cylinder, and a second suction nozzle assembly; the third base is mounted on a workbench, the power mechanism is mounted on the third base, the output end of the power mechanism is vertically connected to the mounting plate, the vertical cylinder is vertically mounted on one side of the mounting plate, and the lower end of the vertical cylinder is equipped with the second suction nozzle assembly; the solder block tray and the module tray are both located on one side of the third base.

[0021] To be further specific, in the above technical solution, a limiting block is also provided at one end of the second guide rail assembly.

[0022] The beneficial effects of this invention are as follows: The automatic tin-applying equipment and method for photovoltaic modules provided by this invention completely replace manual labor with the equipment, realizes the tin storage operation at a fixed position, ensures the uniformity of thickness and the fixity of position, meets the needs of automated welding of the module client, and improves the efficiency of subsequent welding; the process method is scientific and reasonable, with high operating efficiency, which can significantly improve processing efficiency and processing quality, and increase economic benefits. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. 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 processing method of the present invention;

[0025] Figure 2 This is a schematic diagram of the photovoltaic module material feeding component in this invention;

[0026] Figure 3 This is a schematic diagram of the structure of the photovoltaic module feeding assembly in this invention;

[0027] Figure 4 This is a schematic diagram of the solder paste application assembly in this invention;

[0028] Figure 5 yes Figure 4 Schematic diagram of the middle needle tip assembly;

[0029] Figure 6 This is a schematic diagram of the tin-mounting component in this invention;

[0030] Figure 7 This is a schematic diagram of the reflow integral welding assembly in this invention.

[0031] The labels in the attached diagram are:

[0032] A. Photovoltaic module material handling; B. Photovoltaic module material loading; C. Solder paste application; D. Solder block application; E. First visual inspection; F. Circuit soldering; G. Second visual inspection; H. Material unloading; I. Solder block arrangement; 1. First base; 2. First guide rail assembly; 3. Push screw; 4. Screw sleeve; 5. Material handling base; 6. First telescopic cylinder; 7. Fixing plate; 8. First suction nozzle assembly; 9. Horizontal telescopic cylinder; 10. Second base; 11. Upper 11. Material cylinder; 12. Push rod; 13. Push rod cylinder; 14. Push rod cylinder seat; 15. Mounting bracket; 16. Base plate; 17. Sliding plate; 18. Solder paste tube; 19. Fixing base; 20. Top cover; 21. Bottom cover; 22. Needle; 23. Third base; 24. Solder block tray; 25. Module tray; 26. Power mechanism; 27. Second guide rail assembly; 28. Mounting plate; 29. ​​Vertical cylinder; 30. Second suction nozzle assembly; 31. Limit stop. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms "one side", "the other side", "both sides", "between", "middle", "upper end", "lower end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] See Figures 1-7 The present invention provides an automatic tinning method for photovoltaic modules, comprising the following steps:

[0037] Step 1, Material preparation for photovoltaic modules (A);

[0038] Step 2, Loading photovoltaic modules (B);

[0039] Step 3: Apply solder paste C;

[0040] Step 4, Solder block arrangement I: Secure the solder block turnover fixture in the tray with a wrench, and arrange the solder blocks in the groove of the solder block turnover fixture by the vibration mechanism set at the bottom of the tray and the reciprocating swing of the tray; this design allows the solder blocks to be quickly arranged in the solder block turnover fixture, which is convenient for subsequent solder block application operations.

[0041] Step 5: Apply solder block D;

[0042] Step 6, First visual inspection E;

[0043] Step 7, Circuit Welding F;

[0044] Step 8, Second visual inspection G;

[0045] Step 9, unloading material H.

[0046] See Figures 2-7 The present invention discloses an automatic tinning device for photovoltaic modules, which realizes an automatic tinning method for photovoltaic modules, comprising a photovoltaic module material picking component, a photovoltaic module feeding component, a solder paste dispensing component, a solder block application component, and a reflow integral soldering component; the photovoltaic module material picking component is disposed above the photovoltaic module feeding component; one end of the solder paste dispensing component is connected to the photovoltaic module feeding component, the other end of the solder paste dispensing component is connected to the solder block application component, and one side of the solder block application component is connected to the reflow integral soldering component.

[0047] The photovoltaic module material handling assembly includes a first base 1, a first guide rail group 2, a push screw 3, a screw sleeve 4, a material handling base 5, a first telescopic cylinder 6, a fixing plate 7, a first suction nozzle group 8, and a horizontal telescopic cylinder 9. The first base 1 is fixed on the workbench, the first guide rail group 2 is installed on the upper surface of the first base 1, the push screw 3 is arranged between the first guide rail groups 8, one end of the push screw 3 is externally connected to a drive motor, the push screw 3 is threadedly connected to the screw sleeve 4, the material handling base 5 is installed on the upper part of the screw sleeve 4, the horizontal telescopic cylinder 9 is installed on one side of the material handling base 5, the telescopic end of the horizontal telescopic cylinder 9 is fixed to the fixing plate 7 by a connecting block, and the first suction nozzle group 8 is set at the lower end of one side of the fixing plate 7. This design facilitates the quick removal of the photovoltaic module from the plastic tube.

[0048] The photovoltaic module feeding assembly includes a second base 10, a feeding cylinder 11, a push rod 12, a push rod cylinder 13, a push rod cylinder seat 14, and a mounting bracket 15. The second base 10 is mounted on a workbench, the mounting bracket 15 is vertically mounted on the upper surface of the second base 10, the feeding cylinder 11 is vertically mounted on one side of the upper surface of the second base 10, the push rod cylinder seat 14 is mounted on the second base 10, the push rod cylinder 13 is vertically mounted on the push rod cylinder seat 14, and the telescopic end of the push rod cylinder 13 is connected to the push rod 12. This assembly enables rapid feeding and facilitates the loading and arrangement of materials on the module tray.

[0049] The solder paste application assembly includes a substrate 16, a sliding plate 17, a solder paste tube 18, a high-pressure pusher block, a fixing seat 19, and a needle assembly. The lower end of the sliding plate 17 is slidably mounted on the substrate 16 via a slider. The solder paste tube 18 is vertically mounted on one side of the sliding plate 17. The upper part of the solder paste tube 18 is externally connected to the high-pressure pusher block. The solder paste tube 18 is mounted on the sliding plate 17 via the fixing seat 19. The needle assembly is mounted on the lower end of the solder paste tube 18.

[0050] The needle assembly includes an upper cover 20, a lower cover 21, and a needle 22; both the upper cover 20 and the lower cover 21 are hollow shell structures, and the upper cover 20 and the lower cover 21 are connected by a threaded seal. The needle 22 is vertically arranged at the lower end of the lower cover 21; the needle 22 is internally connected to the lower cover 21.

[0051] A solder paste depletion detection sensor is also provided on one side of the mounting base 19 at a position opposite to the solder paste tube 18; the solder paste depletion detection sensor can be used for rapid monitoring of the solder paste position to avoid depletion.

[0052] The solder block assembly includes a third base 23, a solder block tray 24, a module tray 25, a power mechanism 26, a second guide rail assembly 27, a mounting plate 28, a vertical cylinder 29, and a second suction nozzle assembly 30. The third base 23 is mounted on a workbench, the power mechanism 26 is mounted on the third base 23, the output end of the power mechanism 26 is vertically connected to the mounting plate 28, the vertical cylinder 29 is vertically mounted on one side of the mounting plate 28, and the lower end of the vertical cylinder 29 is equipped with the second suction nozzle assembly 30. The solder block tray 24 and the module tray 25 are both located on one side of the third base 23.

[0053] A limit stop 31 is also provided at one end of the second guide rail assembly 27.

[0054] See Figure 1 In actual operation, the relevant steps are explained in detail as follows:

[0055] Regarding step 4, the arrangement of solder blocks I: In this process, the solder block turnover fixture is fixed in the tray using a tray and locked with a wrench. A vibration mechanism is arranged under the tray. The solder blocks are arranged in the groove of the fixture by the reciprocating chip oscillation of the tray and the vibration mechanism.

[0056] Regarding step 2, photovoltaic module loading B: The plastic tube contains the photovoltaic module. After the equipment is pneumatically activated, when the storage position is idle, an external mechanism pushes the lowest plastic tube in the storage area to the placement platform. After being emptied by the loading cylinder 11 located below, the empty plastic tube is sucked into the waste box by a vacuum nozzle. The first suction nozzle group 8 typically has 6 nozzles, which, through the up-and-down movement of the first telescopic cylinder 6, suck up the photovoltaic module for loading.

[0057] Regarding step 3, solder paste application C: Operators typically fill the solder paste tube 18 with solder paste first, then install it on the equipment and fix it using the mounting base 19 and bracket. During the actual solder application process, the upper end of the solder paste tube 18 is connected to a solder paste pressure-driven slider. After being pushed downwards, the solder paste flows through the mounting base 19 to the needle assembly and is applied to a specific location in the solder storage tank of the photovoltaic module. This application uses a separate mounting base 19 to fix the solder paste tube 18, which facilitates ensuring that the position of the needle 22 does not deviate during solder paste replacement and ensures a constant dispensing position. Traditionally, there is no separate mounting base 19, only the needle assembly. During replacement, the needle assembly may experience pin displacement deviation, leading to deviations in the subsequent solder application position, making adjustments time-consuming and labor-intensive. This application also installs a solder paste depletion detection sensor at a relative position on the mounting base 19 to ensure automatic alarm operation when the solder paste is used up. In this application, a guide rail is also provided on one side of the fixing base 19, a slider is provided on the guide rail, and a fixing bracket is provided on one side of the slider to fix the solder paste tube 18.

[0058] For step 5, solder block D: the second suction nozzle group 30 is equipped with 12 rows and 2 columns of vacuum suction nozzles, which can pick up the solder block from the solder block tray 24 and extract it to the corresponding position of the module in the module tray 25.

[0059] For step 7, circuit soldering F: The product tray that has passed visual inspection and is qualified for soldering enters the reflow soldering equipment. By precisely controlling the time and temperature parameters, a good soldering is achieved between the solder block and the solder storage part of the photovoltaic module pin.

[0060] Furthermore, in this application, low-temperature solder paste is used in step 3 (solder paste application), and ordinary temperature solder blocks are used in step 5 (solder block placement). The melting temperature of the low-temperature solder paste is 138°C, and the reflow soldering peak temperature is controlled within the range of 170°C to 200°C during the reflow soldering process. In the reflow soldering equipment, the low-temperature solder paste reaches its melting soldering temperature, while the melting temperature of the solder block is 210°C to 227°C, thus remaining solid. This allows for fully automated and stable placement of the solder blocks.

[0061] In this application, the first telescopic cylinder 6, the first suction nozzle group 8, the horizontal telescopic cylinder 9, the feeding cylinder 11, the push rod cylinder 13, the power mechanism 26, the vertical cylinder 29, and the second suction nozzle group 30 are purchased directly from the market according to specific models and then matched and installed for use.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic tin-coating method for photovoltaic modules, characterized in that, Includes the following steps: Step 1, Photovoltaic module material acquisition (A); Step 2, Loading photovoltaic modules (B); Step 3, Applying Solder Paste (C): Use low-temperature solder paste; Step 4, Arrangement of solder blocks (I): Secure the solder block turnover fixture in the tray with a wrench, and arrange the solder blocks in the groove of the solder block turnover fixture by the vibration mechanism set at the bottom of the tray and the reciprocating swing of the tray. Step 5, Applying Solder Block (D): Use a standard temperature solder block; Step 6, First visual inspection (E); Step 7, Reflow Soldering (F): In the reflow soldering process, the temperature range is controlled. The peak reflow soldering temperature is 170℃~200℃. In the reflow soldering equipment, the low-temperature solder paste reaches the melting soldering temperature, while the melting temperature of the solder block is 210℃~227℃, so it remains solid. Step 8, Second visual inspection (G); Step 9, Unloading (H); The method is implemented using an automatic photovoltaic module soldering device, which includes a photovoltaic module material handling component, a photovoltaic module feeding component, a solder paste application component, a solder block application component, and a reflow soldering component. The photovoltaic module material handling component is located above the photovoltaic module feeding component. One end of the solder paste application component is connected to the photovoltaic module feeding component, and the other end is connected to the solder block application component. One side of the solder block application component is connected to the reflow soldering component. The solder block assembly includes a third base (23), a solder block tray (24), a module tray (25), a power mechanism (26), a second guide rail group (27), a mounting plate (28), a vertical cylinder (29), and a second suction nozzle group (30). The third base (23) is mounted on a workbench, the power mechanism (26) is mounted on the third base (23), the output end of the power mechanism (26) is vertically connected to the mounting plate (28), the vertical cylinder (29) is vertically mounted on one side of the mounting plate (28), and the lower end of the vertical cylinder (29) is equipped with the second suction nozzle group (30). The solder block tray (24) and the module tray (25) are both located on one side of the third base (23).

2. The automatic tinning method for photovoltaic modules according to claim 1, characterized in that: The photovoltaic module material handling assembly includes a first base (1), a first guide rail group (2), a push screw (3), a screw sleeve (4), a material handling base (5), a first telescopic cylinder (6), a fixing plate (7), a first suction nozzle group (8), and a horizontal telescopic cylinder (9). The first base (1) is fixed on the workbench. The first guide rail group (2) is installed on the upper surface of the first base (1). The push screw (3) is arranged between the first guide rail groups (2). One end of the push screw (3) is externally connected to a drive motor. The screw sleeve (4) is threaded onto the push screw (3). The material handling base (5) is installed on the upper part of the screw sleeve (4). The horizontal telescopic cylinder (9) is installed on one side of the material handling base (5). The fixing plate (7) is fixed on the telescopic end of the horizontal telescopic cylinder (9) by a connecting block. The first suction nozzle group (8) is set on the lower side of one side of the fixing plate (7).

3. The automatic tinning method for photovoltaic modules according to claim 1, characterized in that: The photovoltaic module feeding assembly includes a second base (10), a feeding cylinder (11), a push rod (12), a push rod cylinder (13), a push rod cylinder seat (14), and a mounting bracket (15). The second base (10) is mounted on a workbench. The mounting bracket (15) is vertically mounted on the upper surface of the second base (10). The feeding cylinder (11) is vertically mounted on one side of the upper surface of the second base (10). The push rod cylinder seat (14) is mounted on the second base (10). The push rod cylinder (13) is vertically mounted on the push rod cylinder seat (14). The telescopic end of the push rod cylinder (13) is connected to the push rod (12).

4. The automatic tinning method for photovoltaic modules according to claim 1, characterized in that: The solder paste application assembly includes a substrate (16), a sliding plate (17), a solder paste tube (18), a high-pressure pusher block, a fixing seat (19), and a needle assembly. The lower end of the sliding plate (17) is slidably mounted on the substrate (16) via a slider. The solder paste tube (18) is vertically mounted on one side of the sliding plate (17). The upper part of the solder paste tube (18) is externally connected to the high-pressure pusher block. The solder paste tube (18) is mounted on the sliding plate (17) via the fixing seat (19). The needle assembly is mounted on the lower end of the solder paste tube (18).

5. The automatic tinning method for a photovoltaic module according to claim 4, characterized in that: The needle assembly includes an upper cover (20), a lower cover (21), and a needle (22); both the upper cover (20) and the lower cover (21) are hollow shell structures, and the upper cover (20) and the lower cover (21) are connected by a threaded seal. The needle (22) is vertically arranged at the lower end of the lower cover (21); the needle (22) is internally connected to the lower cover (21).

6. The automatic tinning method for a photovoltaic module according to claim 4, characterized in that: A solder paste depletion detection sensor is also provided on one side of the mounting base (19) relative to the solder paste tube (18).

7. The automatic tinning method for photovoltaic modules according to claim 1, characterized in that: A limiting block (31) is also provided at one end of the second guide rail group (27).

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