Photovoltaic module and busbar barrier laser debonding equipment and process

Abstract

The present invention relates to a photovoltaic module and busbar barrier laser debonding equipment and process, and the equipment includes a frame, a debonding transmission unit, and a laser debonding unit. On the one hand, the present invention is based on the guide alignment formed by the correction component along the X-axis direction to cooperate with the transmission of the annular conveyor belt to transmit the photovoltaic module to a specified position, and based on the clamping and splicing parts formed by the jaws to relatively block the welding section and the photovoltaic module, so that the laser debonding is performed under the laser forming a cross and overlapping covering of two busbar welding sections and the beam shielding formed by the splicing part; on the other hand, based on the continuous purge of the welding section by the airflow, the occurrence rate of safety accidents caused by the generation of open flames or the flying of the peeling glue layer is avoided, and at the same time, the debonding time of a single group of busbars is short, that is, it meets the needs of existing assembly line operations.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser processing, and specifically relates to a photovoltaic module and bus bar barrier type laser debonding equipment, and also relates to a photovoltaic module and bus bar barrier type laser debonding process. Background Art

[0002] Photovoltaic modules are formed into laminates after being stacked in different orders by crystalline silicon cells, tempered glass and packaging materials. During the lamination process, the temperature is increased to melt the EVA film on the upper and / or lower layers of the busbar, thereby positioning one end of the busbar in the laminate. The other end of the busbar extends out from the lead-out hole of the upper packaging material for subsequent connection and installation with the junction box. During the installation of the junction box, the ends of the busbar need to be welded. Therefore, the glue on the welding end needs to be removed before welding.

[0003] At present, the glue removal of the welding end of the busbar is mostly done by scraping with a scraper. However, in the actual scraping process, the following defects may occur:

[0004] 1) Since the busbar welding end has the front and back sides, the side surfaces and the top surface (generally only the front and back sides are scraped), and the busbar is very easy to be pulled during the scraping process, not only will there be omissions in the glue removal, but the busbar deformation rate or component damage rate will be increased due to pulling, and the probability of failure to align and assemble with the junction box due to deformation will also increase;

[0005] 2) Since the scraping operation can only be performed on one busbar at a time, if the scraping of two busbars is to be completed, the scraper needs to be moved to at least four different workstations, and the two adjacent busbars are relatively close to each other. Therefore, the scraping is difficult and the efficiency is low. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a new photovoltaic module and busbar barrier type laser debonding equipment.

[0007] At the same time, the present invention also relates to a photovoltaic module and busbar barrier laser debonding process.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] A photovoltaic module and busbar barrier laser glue removal device, comprising:

[0010] The rack is distributed along the X, Y, and Z axes;

[0011] The glue removal transmission unit comprises a plurality of groups of annular conveyor belts arranged side by side and flush with each other, and a correction component located on the side of the plurality of groups of annular conveyor belts and capable of forming a rolling guide, wherein each annular conveyor belt extends along the X-axis direction, and the plurality of groups of annular conveyor belts are arranged side by side along the Y-axis direction, and the correction component forms a guide and a correction along the X-axis direction;

[0012] A laser glue removal unit, comprising a clamping assembly and a laser assembly, wherein the clamping assembly comprises a truss extending along the X-axis, a chuck slidably mounted on the truss, the chuck comprising a slide seat moving along the Z-axis direction, a first clamping die and a second clamping die mounted on the slide seat and clamped for relative movement along the X-axis direction, wherein the first clamping die and the second clamping die are spliced ​​to form a splicing portion and a jaw, and the jaw is clamped on both sides of the busbar in the width direction from the jaw wall, the busbar comprises a welding section located above the jaw, a clamping section located in the jaw, and a connecting section located below the jaw, the welding section having a front and back surface, front and rear side surfaces, and a top surface, wherein the front and back surface are parallel to the plane formed by the Y and Z axes, the front and rear side surfaces are parallel to the plane formed by the X and Z axes, and the top surface is parallel to the plane formed by the X and Y axes;

[0013] The laser assembly includes two laser emitters that intersect with the front and back sides of the busbar, and a smoke processor facing the spacing area formed between the two busbars, wherein the two laser emitters are installed on the same frame, and the frame is adjusted to move along the X and Z axes, and the light beams emitted by the two laser emitters cover the welding sections of the two busbars in an intersecting and complementary manner, and the splicing part blocks the welding section from the photovoltaic assembly to prevent the light beam from being directed to the photovoltaic assembly; the smoke processor collects the smoke, dust, debris and waste generated by the laser burning the glue layer based on the flowing gas.

[0014] Preferably, the correction assembly includes a correction module located at the Y-axis end, the correction module extends along the X-axis direction and forms a wheel transmission surface, wherein the photovoltaic assembly enters and exits the rack based on the wheel transmission surface. Based on the motion guide formed by the grid, the photovoltaic assembly is kept transported along the set path.

[0015] According to a specific implementation and preferred aspect of the present invention, the correction module includes a correction seat, a plurality of correction rollers mounted on the correction seat and arranged side by side along the X-axis, wherein the plurality of correction rollers are aligned to form a wheel conveying surface. The rolling guide formed based on the wheel conveying surface is used to correct the feeding state of the photovoltaic module so as to facilitate the debonding of each group of busbars.

[0016] Preferably, a slide rail extending along the Y-axis direction is also provided on the frame, and the correction seat is slidably installed on the slide rail.

[0017] In some specific embodiments, there are two groups of correction modules, which are symmetrically distributed, and a correction channel is formed between the two wheel transmission surfaces to fit the two ends of the photovoltaic module. Based on the simultaneous restriction and posture correction at both ends, not only the accurate transmission of the busbar is maintained, but also the resistance to the module is small.

[0018] According to another specific implementation and preferred aspect of the present invention, the light beams emitted by each laser emitter are respectively directed to the front, front and rear sides, top surface of the corresponding side bus bar and the back surface of another bus bar. Therefore, the complementary use of the two laser emitters completes the formation of a covering glue removal, thereby significantly reducing the residual glue rate.

[0019] According to another specific implementation and preferred aspect of the present invention, there are multiple clamps, and they are distributed corresponding to the busbars on the photovoltaic module. During the transmission of the photovoltaic module, the clamp moves along the Z axis to avoid until the busbar is aligned with the clamp, and then the clamp moves along the Z and Y axis directions to clamp. The clamps are clamped and positioned one by one, and then the glue is removed from each group of busbars (including two erected busbars) one by one.

[0020] According to another specific implementation and preferred aspect of the present invention, the first clamp includes a first clamp body, and the second clamp includes a second clamp body, wherein a jaw for the bus bar to pass through is formed between the first clamp body and the second clamp body, and the clamp also includes a shielding mold body arranged on the first clamp body and / or the second clamp body and capable of passing through the spacing area, wherein the shielding mold body, the first clamp body and the second clamp body are spliced ​​to form a splicing portion.

[0021] Preferably, the first clamping mold body is attached to the second clamping mold body, and end plates extending along the Y-axis direction are provided at both ends of the first clamping mold body, wherein an air flow channel is formed between the two end plates.

[0022] According to another specific implementation and preferred aspect of the present invention, the smoke and dust processor includes a negative pressure dust collecting hood and an airflow purge component located on the Y axis and distributed at both ends of the spacing area, wherein the airflow formed by the airflow purge component flows into the negative pressure dust collecting hood through two bus bars, and the negative pressure dust collecting hood collects smoke, dust, and debris waste. The smoke, dust, and debris waste are collected by negative pressure adsorption to avoid open flames and safety accidents.

[0023] Preferably, the airflow purge component comprises a mounting seat, an airflow pipe arranged on the mounting seat and extending downward, and a nozzle mounted at the bottom of the airflow pipe, wherein the nozzle faces the spacing area, and the mounting seat can be adjusted along the Y and Z axes. Based on airflow purge, the smoke, dust, and debris waste are comprehensively collected to reduce the residual rate of debris waste and the probability of safety accidents or burns to components caused by residual debris waste.

[0024] Furthermore, a flip guide plate is provided at the end of the nozzle, wherein the flow direction of the airflow in the Z-axis direction is changed during the flipping of the guide plate to cover the two busbar welding sections. Based on the change in the direction of the airflow, the occurrence of purging dead corners is avoided, and at the same time, the direction of the purging force is different, which reduces the probability of the so-called hanging edge. Regarding the hanging edge: when the entire adhesive layer falls off, the detached adhesive layer may be hung on the front side of the busbar to form a hanging edge during the purging process, and the purging in the same direction cannot blow away the hanging edge. Therefore, the hanging edge will remain on the busbar. When the laser degumming system is detached from the busbar, the remaining hanging edge will fall arbitrarily, so there is a safety hazard (such as accidental fire, causing burns on the surface of the component).

[0025] According to another specific implementation and preferred aspect of the present invention, each laser emitter can be rotated and adjusted around the Y-axis direction, and each laser emitter includes a device body extending along the Y-axis direction and a beam emitting head rotatably mounted on the end of the device body. The beam angle and range adjustment of busbar welding ends of different sizes can be met to increase the practicality of laser glue removal.

[0026] In addition, the laser assembly also includes a visual camera for detecting the vertical state of the two busbars and a fill light for auxiliary imaging. Based on the visual camera to obtain the vertical state of the two busbars, if the busbar is tilted and the tilt angle cannot fully cover the welding end, it is necessary to adjust the state of the busbar or actively give up the debonding of the welding end of the busbar.

[0027] Another technical solution of the present invention is: a photovoltaic module and busbar barrier laser debonding process, which uses the above-mentioned laser debonding equipment and includes the following steps:

[0028] S1. Feeding of photovoltaic modules

[0029] The photovoltaic module is placed horizontally, and the chuck moves along the Z axis to avoid it. At the same time, the end face of the photovoltaic module is used as a reference and rolled to fit the rolling guide, and then the annular conveyor belt is used to transport it into the rack. At this time, the busbar extends upward and is located above the photovoltaic module, and each group of busbars corresponds to the chuck above one by one;

[0030] S2. Debonding of busbars

[0031] 1) Each clamping head is lowered along the Z-axis direction so that each group of busbars passes through between the clamp walls of the first clamping die and the second clamping die, and then the dies are closed to form a jaw clamping on both sides of the busbar in the width direction, and at the same time, the welding section of the formed splicing portion passing through the jaw is relatively blocked from the photovoltaic module;

[0032] 2) The frame is adjusted along the X and Z axes to align the laser assembly with a chuck so that the light beams emitted by the two laser emitters cover the two busbar welding sections in an intersecting and complementary manner, and the splicing portion blocks the light beam from being directed toward the photovoltaic assembly, and the smoke processor faces the spacing area;

[0033] 3) Two laser emitters are fired at the welding section simultaneously or successively, and the burning time is 1 to 3 seconds. At the same time, the smoke, dust, debris and waste generated by the laser burning the glue layer are collected based on the flowing gas;

[0034] 4) After the glue removal of a group of busbars is completed, the adjacent chucks are sequentially subjected to the above 2) and 3) operations;

[0035] S3. Discharging of photovoltaic modules

[0036] After the glue removal of all busbars is completed, the clamping assembly and laser assembly are shifted along the Z-axis direction, and the photovoltaic assembly is moved out along the X-axis by the ring conveyor belt.

[0037] In S1, the photovoltaic components are transported based on the rolling guidance and correction formed by the wheel transmission surfaces at both ends of the Y axis.

[0038] In S2, the adhesive of each group of bus bars is removed in sequence along the X-axis direction.

[0039] Due to the implementation of the above technical solution, the present invention has the following advantages compared with the prior art:

[0040] Based on the existing glue removal of the busbar welding section, since the busbar welding end has a front and back surface, side surfaces and top surface (generally only the front and back surfaces are scraped), and it is very easy to cause the busbar to be pulled during the glue scraping process, not only is there omission of glue removal, but the deformation rate of the busbar or the damage rate of the component is increased due to pulling, and the probability of failure to align and assemble with the junction box due to deformation will also be increased; in addition, since the glue scraping operation can only be performed on one busbar at a time, if the glue scraping of two busbars is to be completed, at least the scraper needs to be moved to four different workstations, and the two adjacent busbars are relatively close to each other. Therefore, the glue scraping is difficult, the efficiency of the glue scraping is low, and other shortcomings. The present invention cleverly solves the various shortcomings of the existing structure by overall design of the laser glue removal equipment. After using the laser glue removal equipment, first, the photovoltaic component is placed horizontally, and the chuck moves along the Z axis to avoid it. At the same time, the end face of the photovoltaic component is used as a reference and rolled to fit the rolling guide, and then transmitted to the frame by the annular conveyor belt. At this time, the busbar extends upward and is located above the photovoltaic component, and each group of busbars corresponds to the chuck above one by one; then, each chuck is lowered along the Z axis direction, so that each group of busbars passes through between the clamp walls of the first clamp and the second clamp, and then the molds are closed to form a jaw clamp on both sides of the busbar width direction, and at the same time, the welding section of the splicing part passing through the jaw is relatively blocked from the photovoltaic component; then, the seat frame is adjusted along the X and Z axes, and the laser component is adjusted to align with a chuck, so that the light beams emitted by the two laser emitters cover the two busbar welding sections in an intersecting and complementary manner, and at the same time, the splicing part blocks the light beam from shooting at the photovoltaic component, and the smoke processor is facing the interval area; then, the two laser emitters are simultaneously or successively shot at the welding section, and burn The time is 1 to 3 seconds, and at the same time, the smoke, dust, debris and waste generated by the laser burning of the glue layer are collected based on the flowing gas; then, after completing the degumming of a group of bus bars, the adjacent chucks are operated in sequence; finally, after completing the degumming of all groups of bus bars, the clamping assembly and the laser assembly are shifted along the Z-axis direction, and the photovoltaic assembly is displaced along the X-axis direction by the annular conveyor belt. Therefore, on the one hand, the present invention is based on the guiding and correcting formed by the correction assembly along the X-axis direction to cooperate with the transmission of the annular conveyor belt to transfer the photovoltaic assembly to the specified position, and based on the clamping and splicing parts formed by the jaws to relatively block the welding section and the photovoltaic assembly, so that the laser degumming is performed under the laser forming a cross and overlapping covering of the two bus bar welding sections and the beam shielding formed by the splicing part; on the other hand, based on the continuous purge of the welding section by the airflow, the occurrence rate of safety accidents caused by the generation of open flames or the flying of the detached glue layer is avoided, and at the same time, the degumming time of a single group of bus bars is short (generally about 5 seconds), that is, it meets the needs of existing assembly line operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of the structure of the photovoltaic module and busbar of this embodiment;

[0042] Figure 2 This is a schematic diagram of the structure of the laser glue removal equipment of this embodiment;

[0043] Figure 3 for Figure 2 Schematic diagram of the local structure;

[0044] Figure 4 for Figure 3 Schematic diagram of the local structure;

[0045] Figure 5 for Figure 4 Schematic diagram of the local structure;

[0046] Figure 6 for Figure 4 Schematic diagram of the local structure;

[0047] Figure 7 for Figure 4 Schematic cross-sectional view of ;

[0048] Figure 8 is a schematic structural diagram of the clamping assembly of this embodiment;

[0049] Fig. 9 for Figure 8 A magnified schematic diagram of the structure;

[0050] Fig.10 for Fig. 9 A magnified schematic diagram of the structure;

[0051] Where: G, photovoltaic module; g1, module body; g2, frame; g3, bus bar group; h, bus bar;

[0052] ①, rack; H, slide rail;

[0053] ②, glue removal transmission unit; 1, ring conveyor belt; 2, calibration component; 20, calibration module; 200, calibration seat; 201, calibration roller;

[0054] ③. Laser degumming unit; 3. Clamping assembly; 30. Truss; 31. Chuck; 310. Slide; 311. First clamp; 312. Second clamp; 313. Shielding mold; w. End plate; 314. First claw; 315. Second claw; 4. Laser assembly; 40. Laser emitter; 400. Device body; 401. Beam emitter; 41. Smoke and dust processor; 410. Negative pressure dust hood; 411. Airflow purge component; a. Mounting seat; b. Airflow pipe; c. Nozzle; e. Guide vane; 42. Mount; 43. Visual camera; 44. Fill light. DETAILED DESCRIPTION

[0055] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0056] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0060] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0061] like Figure 1 As shown, the photovoltaic module G includes a module body g1, a frame g2, and a bus bar group g3, wherein there are three bus bar groups, each of which is composed of two upright bus bars h.

[0062] Combination Figures 2 to 10 As shown, the photovoltaic module and busbar barrier laser debonding equipment of this embodiment includes a frame ①, a debonding transmission unit ② and a laser debonding unit ③.

[0063] Specifically, the rack ① is distributed along the three axes of X, Y, and Z. The degumming transmission unit ② includes a plurality of sets of annular conveyor belts 1 arranged side by side and flush with the top surface, and a correction component 2 located on the side of the plurality of sets of annular conveyor belts 1 and capable of forming a rolling guide. The laser degumming unit ③ includes a clamping component 3 and a laser component 4.

[0064] In some specific embodiments, each annular conveyor belt 1 extends along the X-axis direction, and multiple groups of annular conveyor belts 1 are arranged side by side along the Y-axis direction, and the correction component 2 forms a guide and regulation along the X-axis direction. In this example, the correction component 2 includes a correction module 20 located at the end of the Y-axis, and the correction module 20 extends along the X-axis direction and forms a wheel transmission surface, wherein the photovoltaic component G enters and exits the frame ① based on the wheel transmission surface. Based on the motion guide formed by the grid, the photovoltaic component is kept to be transmitted along the set path. The correction module 20 includes a correction seat 200, and a plurality of correction rollers 201 installed on the correction seat 200 and arranged side by side along the X-axis, wherein the plurality of correction rollers 201 are aligned to form a wheel transmission surface. Based on the rolling guide formed by the wheel transmission surface, the feeding state of the photovoltaic component is corrected to facilitate the degumming of each group of bus bars. A slide rail H extending along the Y-axis direction is also provided on the frame ①, and the correction seat 200 is installed on the slide rail H for sliding adjustment. There are two groups of correction modules 20, which are symmetrically distributed, and the two wheel transmission surfaces form a correction channel that fits the two ends of the photovoltaic module G. Based on the simultaneous restriction and posture correction at both ends, not only the accurate transmission of the busbar is maintained, but also the resistance to the module is small.

[0065] In some specific embodiments, the clamping assembly 3 includes a truss 30 extending along the X-axis, a clamp 31 slidably mounted on the truss 30, the clamp 31 includes a slide 310 moving along the Z-axis direction, a first clamp 311 and a second clamp 312 mounted on the slide 310 and clamped for relative movement along the X-axis, wherein the first clamp 311 and the second clamp 312 are spliced ​​to form a splicing portion and a jaw, and the jaws are clamped on both sides of the busbar in the width direction from the jaw wall, the busbar includes a welding section located above the jaw, a clamping section located in the jaw, and a connecting section located below the jaw, the welding section has a front and back surface, front and rear side surfaces, and a top surface, wherein the front and back surface are parallel to the plane formed by the Y and Z axes, the front and rear side surfaces are parallel to the plane formed by the X and Z axes, and the top surface is parallel to the plane formed by the X and Y axes.

[0066] In this example, there are multiple chucks 31, and they are distributed corresponding to the busbar groups on the photovoltaic module, wherein during the transmission of the photovoltaic module, the chuck 31 moves along the Z axis to avoid, until the busbar is aligned with the chuck, and then the chuck moves along the Z and Y axis directions to form a clamp. The chucks are clamped and positioned one by one, and then the glue is removed from each group of busbars (including two upright busbars) one by one. The first clamp 311 includes a first clamp body, and the second clamp 312 includes a second clamp body, wherein a jaw is formed between the first clamp body and the second clamp body for the busbar to pass through, and the chuck 31 also includes a shielding mold 313 arranged on the first clamp body and capable of passing through the spacing area, wherein the shielding mold 313, the first clamp body, and the second clamp body are spliced ​​to form the splicing portion. At the same time, the first clamping mold body is attached to the second clamping mold body, and end plates w extending along the Y-axis direction are provided at both ends of the first clamping mold body, wherein an air flow channel is formed between the two end plates w (mainly to assist air flow blowing for exhaust gas and waste collection).

[0067] Furthermore, a first claw body 314 and a second claw body 315 capable of relative movement are provided on the slide seat 310 (specifically, the first claw body 314 and the second claw body 315 are cooperated with a clamping claw power device and a guide rail seat), wherein the first clamping mold 311 and the second clamping mold 312 are respectively fixed on the first claw body 314 and the second claw body 315, and the first clamping mold body and the second clamping mold body themselves can be adjusted along the Y-axis direction to increase the practicality of clamping.

[0068] In some specific embodiments, the laser assembly 4 includes two laser emitters 40 that intersect with the front and back sides of the bus bar, and a smoke processor 41 facing the spacing area formed between the two bus bars, wherein the two laser emitters 40 are installed on the same frame 42, and the frame 42 is adjusted to move along the X and Z axes, and the light beams emitted by the two laser emitters 40 cover the welding sections of the two bus bars in an intersecting and complementary manner, and the splicing portion blocks the welding section from the photovoltaic assembly to prevent the light beam from being directed to the photovoltaic assembly; the smoke processor 41 collects the smoke, dust, debris and waste generated by the laser burning the glue layer based on the flowing gas.

[0069] In this example, the light beams emitted by each laser emitter 40 are respectively directed to the front, front and rear sides, top surface of the corresponding side busbar and the back surface of another busbar. Therefore, the covering glue removal is completed in the complementarity of the two laser emitters to greatly reduce the residual glue rate. At the same time, each laser emitter 40 can be rotated and adjusted around the Y-axis direction, and each laser emitter 40 includes a device body 400 extending along the Y-axis direction and a beam emitting head 401 rotatably mounted at the end of the device body 400. The beam angle and range adjustment to meet the needs of busbar welding ends of different sizes can increase the practicality of laser glue removal.

[0070] The smoke and dust processor 41 includes a negative pressure dust hood 410 and an airflow purge component 411 located on the Y axis and distributed at both ends of the spacing area, wherein the airflow formed by the airflow purge component 411 flows into the negative pressure dust hood 410 through two bus bars, and the negative pressure dust hood 410 collects smoke, dust, and debris waste. Smoke, dust, and debris waste are collected by negative pressure adsorption to avoid open flames and safety accidents. The airflow purge component 411 includes a mounting seat a, an airflow tube b arranged on the mounting seat a and extending downward, and a nozzle c installed at the bottom of the airflow tube b, wherein the nozzle c is facing the spacing area, and the mounting seat a can be adjusted along the Y and Z axes. Based on airflow purge to avoid the appearance of hanging edges of some debris waste, the comprehensive collection of smoke, dust, and debris waste is implemented, the residual rate of debris waste is reduced, and the probability of safety accidents caused by residual debris waste or burns to components is reduced. A flipping guide plate e is provided at the end of the nozzle c, wherein the flow direction of the airflow in the Z-axis direction is changed during the flipping of the guide plate e to cover the two busbar welding sections. Based on the change in the direction of the airflow, the occurrence of purging dead corners is avoided, and at the same time, the direction of the purging force is different, which reduces the probability of the so-called hanging edge. Regarding the hanging edge: when the entire adhesive layer falls off, the detached adhesive layer may be hung on the front side of the busbar to form a hanging edge during the purging process, and the purging in the same direction cannot blow away the hanging edge. Therefore, the hanging edge will remain on the busbar. When the laser degumming system is detached from the busbar, the remaining hanging edge will fall arbitrarily, so there are safety hazards (such as accidental fire and burns on the surface of the component).

[0071] In addition, the laser assembly 4 also includes a visual camera 43 for detecting the erection status of the two bus bars and a fill light 44 for assisting imaging. Based on the visual camera, the erection status of the two bus bars is obtained. If the bus bar is tilted and the tilt angle cannot fully cover the welding end, it is necessary to adjust the state of the bus bar or actively give up the debonding of the welding end of the bus bar.

[0072] In summary, the laser debonding process of this embodiment includes the following steps:

[0073] S1. Feeding of photovoltaic modules

[0074] The photovoltaic module is placed horizontally, and the chuck moves along the Z axis to avoid it. At the same time, the end face of the photovoltaic module is used as a reference and rolled to fit the rolling guide, and then the annular conveyor belt is used to transport it into the rack. At this time, the busbar extends upward and is located above the photovoltaic module, and each group of busbars corresponds to the chuck above one by one;

[0075] S2. Debonding of busbars

[0076] 1) Each clamping head is lowered along the Z-axis direction so that each group of busbars passes through between the clamp walls of the first clamping die and the second clamping die, and then the dies are closed to form a jaw clamping on both sides of the busbar in the width direction, and at the same time, the welding section of the formed splicing portion passing through the jaw is relatively blocked from the photovoltaic module;

[0077] 2) The frame is adjusted along the X and Z axes to align the laser assembly with a chuck so that the light beams emitted by the two laser emitters cover the two busbar welding sections in an intersecting and complementary manner, and the splicing portion blocks the light beam from being directed toward the photovoltaic assembly, and the smoke processor faces the spacing area;

[0078] 3) Two laser emitters are fired at the welding section simultaneously or successively, and the burning time is 1 to 3 seconds. At the same time, the smoke, dust, debris and waste generated by the laser burning the glue layer are collected based on the flowing gas;

[0079] 4) After the glue removal of a group of busbars is completed, the adjacent chucks are sequentially subjected to the above 2) and 3) operations;

[0080] S3. Discharging of photovoltaic modules

[0081] After the glue removal of all busbars is completed, the clamping assembly and laser assembly are shifted along the Z-axis direction, and the photovoltaic assembly is moved out along the X-axis by the ring conveyor belt.

[0082] In S1, the photovoltaic modules are transported based on the rolling guidance and correction formed by the wheel transmission surfaces at both ends of the Y axis. In S2, the glue of each group of bus bars is removed in sequence along the X axis direction.

[0083] Therefore, on the one hand, the present invention is based on the guide alignment formed by the correction component along the X-axis direction to cooperate with the transmission of the annular conveyor belt to transport the photovoltaic component to the specified position, and based on the clamping and splicing parts formed by the jaws to relatively block the welding section and the photovoltaic component, so that laser debonding is performed under the laser forming a cross and overlapping coverage of the two busbar welding sections and the beam shielding formed by the splicing part; on the other hand, based on the continuous purge of the welding section by the airflow, the occurrence rate of safety accidents caused by the flying of the peeling glue layer is avoided, and the debonding time of a single group of busbars is short (generally about 5 seconds), that is, it meets the needs of existing assembly line operations; the third aspect is based on the formation of the grid (wheel transmission surface) The motion guide formed can correct the feeding state of the photovoltaic components and keep the photovoltaic components transmitted along the set path. At the same time, with the assistance of the correction channel, it can not only maintain the accurate transmission of the busbar, but also reduce the resistance to the components. Fourthly, the light beams emitted by each laser emitter are respectively directed to the front, front and rear sides, top surface of the corresponding side busbar and the back of the other busbar. Therefore, the covering glue removal is completed in the complementarity of the two laser emitters to greatly reduce the residual glue rate. Fifthly, based on the clamping of the jaws, it will not cause the clamping deformation of the busbar, and reduce the probability of damaging the component due to the light beam shooting to the component due to accidental touching of the clamp, and the effective shielding of the splicing part can avoid causing Burns on the surface of the component; at the same time, the airflow guidance formed based on the airflow channel is more conducive to the collection of smoke, dust, and debris waste (that is, there is a technical connection between shielding and smoke treatment); in the sixth aspect, the smoke, dust, and debris waste formed by laser burning are gathered into the negative pressure dust collecting hood during the same-direction work of front blowing and rear suction, wherein the airflow blowing is based on to avoid the hanging edge of some debris waste, thereby implementing the comprehensive collection of smoke, dust, and debris waste, reducing the residual rate of debris waste and reducing the probability of safety accidents or burns to components caused by residual debris waste; at the same time, the mounting seat can be adjusted up and down and front and back; that is, based on the up and down and front and back position adjustment, To meet the coverage and purging requirements of the welding ends of bus bars of different sizes; or based on the change in airflow direction, to avoid purging dead corners, and at the same time, the directions of the purging forces are different, reducing the probability of so-called edge hanging; seventhly, each laser emitter can be rotated and adjusted around the width direction of the bus bar to meet the beam angle and range adjustment requirements of the welding ends of bus bars of different sizes, so as to increase the practicality of laser degumming; eighthly, based on the visual camera, the upright state of the two bus bars is obtained, and with the assistance of the fill light, the image is accurately obtained. If the bus bar is tilted and the tilt angle cannot fully cover the welding end, it is necessary to adjust the state of the bus bar or actively abandon the degumming of the welding end of the bus bar.

[0084] The above detailed description of the present invention is intended to enable persons familiar with the art to understand the contents of the present invention and implement them. It does not limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic module and busbar barrier laser debonding device, characterized in that: It includes: The rack is distributed along the X, Y, and Z axes; The glue removal transmission unit comprises a plurality of groups of annular conveyor belts arranged side by side and flush with each other, and a correction component located on the side of the plurality of groups of annular conveyor belts and capable of forming a rolling guide, wherein each annular conveyor belt extends along the X-axis direction, and the plurality of groups of annular conveyor belts are arranged side by side along the Y-axis direction, and the correction component forms a guide and a correction along the X-axis direction; A laser glue removal unit, comprising a clamping assembly and a laser assembly, wherein the clamping assembly comprises a truss extending along the X-axis, a clamp slidably mounted on the truss, the clamp comprising a slide seat moving along the Z-axis direction, a first clamp and a second clamp seat mounted on the slide seat and clamped for relative movement along the X-axis direction, wherein the first clamp and the second clamp seat are spliced ​​to form a splicing portion and a jaw, and the jaws are clamped on both sides of the busbar in the width direction from the jaw wall, the busbar comprises a welding section located above the jaw, a clamping section located in the jaw, and a connecting section located below the jaw, the welding section having a front and back surface, front and rear side surfaces, and a top surface, wherein the front and back surface are parallel to the plane formed by the Y and Z axes, the front and rear side surfaces are parallel to the plane formed by the X and Z axes, and the top surface is parallel to the plane formed by the X and Y axes; The laser assembly includes two laser emitters that intersect with the front and back sides of the busbar, and a smoke processor facing the spacing area formed between the two busbars, wherein the two laser emitters are installed on the same frame, and the frame is adjusted to move along the X and Z axes, and the light beams emitted by the two laser emitters cover the two busbar welding sections in an intersecting and complementary manner, and the splicing part relatively blocks the welding section from the photovoltaic assembly to prevent the light beam from being directed to the photovoltaic assembly; the smoke processor collects the smoke, dust, debris and waste generated by the laser burning the glue layer based on the flowing gas.

2. The photovoltaic module and busbar barrier laser debonding equipment according to claim 1, characterized in that: The correction component comprises a correction module located at the Y-axis end, the correction module extends along the X-axis direction and forms a wheel transmission surface, wherein the photovoltaic component enters and exits the frame based on the wheel transmission surface.

3. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 2, characterized in that: The correction module includes a correction seat, and a plurality of correction rollers installed on the correction seat and distributed side by side along the X-axis, wherein the plurality of correction rollers are aligned to form the wheel transmission surface.

4. The photovoltaic module and busbar barrier laser debonding equipment according to claim 3, characterized in that: A slide rail extending along the Y-axis direction is also provided on the frame, and the correction seat is slidably mounted on the slide rail.

5. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 4, characterized in that: There are two groups of correction modules, which are symmetrically distributed, wherein a correction channel is formed between two wheel transmission surfaces to fit the two ends of the photovoltaic module.

6. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 1, characterized in that: The light beams emitted by the laser emitters are respectively directed to the front surface, front and rear side surfaces, top surface of the corresponding side bus bar and the back surface of another bus bar.

7. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 1, characterized in that: There are multiple clamps, and they are distributed corresponding to the busbars on the photovoltaic module. During the transmission of the photovoltaic module, the clamp moves along the Z axis to avoid until the busbar is aligned with the clamp, and then the clamp moves along the Z and Y axis directions to form a clamp.

8. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 1, characterized in that: The first clamp includes a first clamp body, and the second clamp includes a second clamp body, wherein a jaw is formed between the first clamp body and the second clamp body for the bus bar to pass through, and the clamp also includes a shielding mold body arranged on the first clamp body and / or the second clamp body and capable of passing through the spacing area, wherein the shielding mold body, the first clamp body, and the second clamp body are spliced ​​to form the splicing portion.

9. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 8, characterized in that: The first clamping mold body is attached to the second clamping mold body, and end plates extending along the Y-axis direction are provided at both ends of the first clamping mold body, wherein an air flow channel is formed between the two end plates.

10. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 1, characterized in that: The smoke and dust processor includes a negative pressure dust hood and an airflow purge component located on the Y axis and distributed at both ends of the spacing area, wherein the airflow formed by the airflow purge component flows into the negative pressure dust hood through two bus bars, and the negative pressure dust hood collects smoke, dust, debris and waste.

11. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 10, characterized in that: The airflow blowing component includes a mounting seat, an airflow tube arranged on the mounting seat and extending downward, and a nozzle installed at the bottom of the airflow tube, wherein the nozzle faces the spacing area, and the mounting seat can be adjusted along the Y and Z axes.

12. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 11, characterized in that: A flip guide plate is provided at the end of the nozzle, wherein the flow direction of the airflow in the Z-axis direction is changed during the flipping of the guide plate to cover the two busbar welding sections.

13. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 1, characterized in that: Each of the laser emitters can be rotated and adjusted around the Y-axis direction, and each of the laser emitters includes a device body extending along the Y-axis direction and a beam emitting head rotatably mounted on the end of the device body.

14. The photovoltaic module and busbar barrier laser glue removal equipment according to claim 1, characterized in that: The laser assembly also includes a visual camera for detecting the erection status of the two bus bars and a fill light for assisting imaging.

15. A photovoltaic module and busbar barrier laser debonding process, characterized in that: It adopts the laser glue removal equipment described in any one of claims 1 to 14, and comprises the following steps: S1. Feeding of photovoltaic modules The photovoltaic module is placed horizontally, and the chuck moves along the Z axis to avoid it. At the same time, the end face of the photovoltaic module is used as a reference and rolled to fit the rolling guide, and then the annular conveyor belt is used to transport it into the rack. At this time, the busbar extends upward and is located above the photovoltaic module, and each group of busbars corresponds to the chuck above one by one; S2. Debonding of busbars 1) Each clamping head is lowered along the Z-axis direction so that each group of busbars passes through between the clamp walls of the first clamping die and the second clamping die, and then the dies are closed to form a jaw clamping on both sides of the busbar in the width direction, and at the same time, the welding section of the formed splicing portion passing through the jaw is relatively blocked from the photovoltaic module; 2) The frame is adjusted along the X and Z axes to align the laser assembly with a chuck so that the light beams emitted by the two laser emitters cover the two busbar welding sections in an intersecting and complementary manner, and the splicing portion blocks the light beam from being directed toward the photovoltaic assembly, and the smoke processor faces the spacing area; 3) Two laser emitters are fired at the welding section simultaneously or successively, and the burning time is 1 to 3 seconds. At the same time, the smoke, dust, debris and waste generated by the laser burning the glue layer are collected based on the flowing gas; 4) After the glue removal of a group of busbars is completed, the adjacent chucks are sequentially subjected to the above 2) and 3) operations; S3. Discharging of photovoltaic modules After the glue removal of all busbars is completed, the clamping assembly and the laser assembly are moved along the Z-axis direction, and the photovoltaic assembly is discharged by the ring conveyor belt along the X-axis direction.

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