Laser debonding system for busbar weld ends

Through the laser glue removal system, clamping and cross beam technology is used to solve the problems of pulling, high complexity, high residual glue rate and low working efficiency during the welding end of the bus bar, and a fast, safe and efficient glue removal effect is achieved, meeting the needs of flow-through assembly operations.

CN119260190BActive Publication Date: 2025-04-22KESHENGDA (SUZHOU) INTELLIGENT TECH CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202411813494.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-04-22
Estimated Expiration
2044-12-11

AI Technical Summary

Technical Problem

The prior art has problems such as pulling, high complexity, high residual glue rate and low working efficiency in the removal process of bus bar welding ends, which is difficult to meet the needs of rapid flow assembly operations.

Method used

A laser glue removal system is adopted to form jaws through the matching clamps of the first chuck and the second chuck, clamp the bus bar welding end, and cover the welding end with the cross and complementary beams of the two laser emitters, combining the smoke processor to collect the smoke generated by the laser burning to achieve rapid glue removal.

Benefits of technology

It realizes rapid glue removal at the welding end of the bus bar, avoids pulling and residual glue of the bus bar, improves glue removal efficiency and safety, and meets the needs of flow-through assembly operations.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119260190B_ABST
    Figure CN119260190B_ABST
Patent Text Reader

Abstract

The present invention relates to a laser glue removal system for a busbar welding end, which includes a busbar clamping unit and a laser processing unit. The busbar clamping unit includes a first clamp and a second clamp. The laser processing unit includes two laser emitters and a smoke and dust processor. On the one hand, the present invention uses lasers to form crosses and overlaps to cover the two busbar welding ends, and shields the light beam directed to the component in the obstruction of the two matching clamps, so that the light beam burns in a short time to remove the glue layer, and also avoids the light beam causing damage to the component; on the other hand, the smoke, dust, and debris waste generated by the laser burning of the glue layer are collected based on the smoke and dust processor, so as to avoid the occurrence of open flames or safety accidents caused by the flying of the peeling glue layer. At the same time, the time required from clamping to laser removal is short, meeting the needs of existing assembly line operations.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention belongs to the technical field of laser processing, and in particular relates to a laser glue removal system for a busbar welding end. Background Art

[0002] Photovoltaic modules are formed by stacking crystalline silicon cells, tempered glass and packaging materials in different orders, and then laminated to form a laminate. During the lamination process, the temperature is raised to melt the EVA film on the upper and / or lower layers of the busbar, so that one end of the busbar is positioned in the laminate, and 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. In order to prevent the melted EVA glue from overflowing from the lead-out hole during the lamination process and affecting the performance and appearance of the photovoltaic laminate, a high-temperature cloth (also called photovoltaic high-temperature cloth, often referred to as a high-temperature cloth) needs to be used before lamination. Such as: polytetrafluoroethylene cloth), that is, it is attached to the surface of the photovoltaic laminate and covers the lead-out hole to prevent the EVA glue from overflowing. At the same time, the busbar passes through the high-temperature cloth and is relatively flattened above the high-temperature cloth. Therefore, after the lamination is completed, the high-temperature cloth needs to be torn off, and the busbar that was bent and attached to the surface of the high-temperature cloth during the lamination process needs to be turned upward (that is, from horizontal to vertical state). That is, the busbar passes through the inside of the photovoltaic module, and its surface is easily sticky with the glue overflowing from the inside of the module. If the glue is not removed, it will be detrimental to the subsequent installation of the junction box and the welding of the busbar.

[0003] However, the busbar is erected while the high-temperature cloth is torn off. Therefore, it is necessary to remove the glue from the upper end of the busbar while keeping the busbar erected. Conventional busbar operations are all performed by scraping with a scraper, which has the following defects:

[0004] 1) Since the busbar itself is easy to deform, if scraping is used, it will inevitably cause the busbar to be pulled, increasing the damage rate of the busbar or components, and also increasing the probability of being unable to align with the junction box due to deformation;

[0005] 2) Since the two busbars are relatively close to each other, it is difficult to scrape the inner sides of the two busbars. Even if the front and back sides of the busbars are scraped, there will still be residual glue on both sides of the width direction of the busbars. Therefore, the resulting glue removal method is not only complicated and difficult to implement, but also still has a residual glue rate;

[0006] 3) The scraping work efficiency is low and cannot meet the requirements of fast assembly line operations. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a new laser glue removal system for the welding end of a busbar.

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

[0009] A laser glue removal system for a busbar welding end, the laser glue removal system comprising a busbar clamping unit and a laser processing unit, the busbar clamping unit comprising a first clamp and a second clamp which are based on the interval area between two busbars and relatively move along the width direction of the busbars to form a clamp, wherein the first clamp and the second clamp can be matched and butted to form an upper and lower barrier between the welding end of the busbar and the assembly, and each welding end of the busbar comprises a front and back surface, front and rear side surfaces and a top surface;

[0010] The laser processing unit includes two laser emitters which are based on each bus bar and intersect with the front and back of the bus bar, and a smoke processor facing the interval area, wherein the light beam emitted by each laser emitter is respectively emitted to the front, front and rear side surfaces, top surface of the corresponding side bus bar and the back surface of another bus bar, and the light beams emitted by the two laser emitters cover the welding ends of the two bus bars in an intersecting and complementary manner, and the first chuck and the second chuck form a matching docking to block the light beam emitted by the laser emitter to the component;

[0011] The smoke and dust processor continuously collects the smoke, dust and debris generated by laser burning the glue layer based on the flowing gas.

[0012] The first clamp and the second clamp are matched to form a jaw for two bus bars to pass through, wherein the two opposite sides of the jaw clamp the two sides in the width direction of the bus bar.

[0013] Preferably, the first chuck includes a first clamp module and a first shielding module formed on the first clamp module; the second chuck includes a second clamp module and a second shielding module formed on the second clamp module, wherein the first clamp module and the second clamp module are relatively fitted to form a clamp area, the first shielding module and the second shielding module are matched to form a jaw, and the first shielding module and the second shielding module shield the light beam directed to the component.

[0014] According to a specific implementation and preferred aspect of the present invention, the shielding part formed by the first shielding module and the second shielding module includes a first shielding portion located in the spacing area, a second shielding portion and a third shielding portion respectively located on the opposite outer sides of the front faces of the two busbars, wherein the second shielding portion and the third shielding portion respectively form shielding panels from the outer sides, wherein the two shielding panels can also form airflow guides to assist the smoke and dust processor in collecting the smoke, dust, and debris waste. Here, based on the effective shielding formed by the three shielding portions, burns on the component surface are avoided; at the same time, based on the formed airflow guide, it is more conducive to the collection of smoke, dust, and debris waste.

[0015] Preferably, there are two jaws, and each busbar passes through the corresponding jaws. In this way, the first shielding portion can also form a certain internal support from the spacing area, and when the two busbars are relatively close to each other, the two busbars can be relatively spread apart.

[0016] In some specific embodiments, the jaws are kept elastically abutting against and clamped on both sides of the busbar in the width direction. Here, the elastic clamping will not cause the clamping deformation of the busbar, and reduce the probability of damaging the component due to the light beam being directed to the component due to accidental contact with the clamp.

[0017] According to another specific implementation and preferred aspect of the present invention, the smoke and dust processor includes a negative pressure dust collecting hood located in the spaced area opposite to the dust collecting port, wherein the negative pressure dust collecting hood forms a gas flow based on negative pressure to collect smoke, dust, and debris waste. The smoke, dust, and debris waste are collected by negative pressure adsorption to avoid open flames and safety accidents.

[0018] Preferably, the negative pressure dust hood is located behind the spacing area, and the smoke processor also includes an airflow purge component arranged in front of the spacing area, wherein the smoke, dust, debris and waste formed by laser burning are collected into the negative pressure dust hood during the same-direction operation of front blowing and rear suction.

[0019] In some specific embodiments, the airflow purge 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. Based on the 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 caused by residual debris waste or burns to components.

[0020] According to another specific implementation and preferred aspect of the present invention, 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, it can meet the requirements of covering and purging the welding ends of busbars of different sizes.

[0021] According to another specific implementation and preferred aspect of the present invention, a flipping blade is provided at the end of the nozzle, wherein the flow direction of the airflow in the up-down direction is changed during the flipping of the blade to cover the welding ends of the two bus bars. Based on the change in the direction of the airflow, the occurrence of a purging dead angle 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, it is possible that the detached adhesive layer will be hung on the front side of the bus bar 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 bus bar. When the laser degumming system is detached from the bus bar, 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).

[0022] Preferably, each laser emitter is configured to be rotatable and adjustable around the width direction of the busbar, so as to meet the needs of adjusting the beam angle and range of the welding ends of busbars of different sizes, thereby increasing the practicality of laser glue removal.

[0023] In addition, the laser glue removal system also includes a visual camera for detecting the erection status of the two busbars. Based on the visual camera, the erection status of the two busbars is obtained. 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 glue removal of the welding end of the busbar.

[0024] Due to the implementation of the above technical solution, the present invention has the following advantages compared with the prior art:

[0025] Based on the existing degumming of the busbar welding end, since the busbar itself is easily deformed, if the scraping method is adopted, it will inevitably cause the busbar to be pulled, increase the damage rate of the busbar or the component, and also increase the probability of failure to align and assemble with the junction box due to deformation; then, since the two busbars are in a relatively close state, it is difficult to scrape the relative inner sides of the two busbars. At the same time, even if the glue is scraped on the front and back sides of the busbar, there is still residual glue on both sides of the width direction of the busbar. Therefore, the resulting degumming method is not only complicated and difficult to implement, but also still has a residual glue rate; finally, the scraping work efficiency is low, and it cannot meet the requirements of fast assembly line operations and other shortcomings. The present invention cleverly solves various deficiencies of the existing structure by overall design of the laser degumming system for the busbar welding end. After adopting the laser glue removal system, the busbar is first clamped by the matching first chuck and the second chuck to form a barrier between the welding end and the component in the vertical direction; secondly, the light beams emitted by the two laser emitters cover the welding ends of the two busbars in an intersecting and complementary manner, and the matching docking formed by the first chuck and the second chuck blocks the light beam emitted by the laser emitter to the component; finally, the glue layer is separated from the busbar under the laser burning (1 to 3 seconds) formed by the two laser emitters, and the smoke, dust, debris and waste generated are collected in the smoke and dust processor to quickly complete the welding of the two busbars. To remove the glue from the joint, the present invention, on the one hand, uses laser to form a cross and overlap to cover the welding ends of the two bus bars, and blocks the light beam directed to the component in the obstruction of the two matching clamps, so that the light beam burns in a short time to remove the glue layer, and also avoids the damage of the component caused by the light beam; on the other hand, the smoke, dust, and debris waste generated by the laser burning of the glue layer are collected based on the smoke and dust processor to avoid the occurrence of open flames or safety accidents caused by the flying of the detached glue layer. At the same time, it takes about 5 seconds from clamping to laser removal, which meets the needs of existing assembly line operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a structural schematic diagram of the laser glue removal system for the busbar welding end of this embodiment;

[0027] Figure 2 for Figure 1 Schematic diagram of the local structure;

[0028] Figure 3 for Figure 1 Schematic cross-sectional view of ;

[0029] Figure 4 for Figure 1 Structural schematic diagram of the busbar clamping unit (not clamped);

[0030] Figure 5 for Figure 4 A magnified schematic diagram of the local structure (not clamped);

[0031] Figure 6 for Figure 1 A magnified schematic diagram of the local structure of the central busbar clamping unit (when clamping);

[0032] Wherein: 1, busbar clamping unit; 11, first clamp; 110, first clamp module; 111, first shielding module; 12, second clamp; 120, second clamp module; 121, second shielding module; d1, first shielding part; d2, second shielding part; d3, third shielding part; w, shielding enclosure; 13, clamping power device; 14, first clamp arm; 15, second clamp arm;

[0033] 2. Laser processing unit; 20. Laser transmitter; 200. Device body; 201. Transmitter head; 21. Smoke and dust processor; 210. Negative pressure dust collecting cover; 211. Airflow purge component; a. Mounting seat; b. Airflow pipe; c. Nozzle; 22. Visual camera; 23. Protective cover; 24. Light filler;

[0034] h. Busbar; G. Component. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] like Figures 1 to 6As shown, the laser glue removal system for the busbar welding end of this embodiment includes a busbar clamping unit 1 and a laser processing unit 2. The busbar clamping unit 1 includes a first chuck 11 and a second chuck 12 which are based on the spacing area between the two busbars h and move relative to each other along the width direction of the busbar h to form a clamp; the laser processing unit 2 includes two laser emitters 20 which are based on each busbar h and intersect with the front and back sides of the busbar h, a smoke processor 21 facing the spacing area, a visual camera 22 for detecting the erection state of the two busbars, and a protective cover 23.

[0042] Specifically, the first clamp 11 and the second clamp 12 can be matched and docked to form an upper and lower barrier between the welding end of the bus bar h and the component G. The welding end of each bus bar h includes a front and back surface, front and rear side surfaces and a top surface.

[0043] In some specific embodiments, the first clamp 11 and the second clamp 12 match to form a jaw for two busbars h to pass through, wherein the two opposite sides of the jaw are clamped on both sides of the width direction of the busbar h. In this example, the first clamp 11 includes a first clamp module 110 and a first shielding module 111 formed on the first clamp module 110; the second clamp 12 includes a second clamp module 120 and a second shielding module 121 formed on the second clamp module 120, wherein the first clamp module 110 and the second clamp module 120 are relatively fitted to form a clamp area, the first shielding module 111 and the second shielding module 121 match to form a jaw, and the first shielding module 111 and the second shielding module 121 shield the light beam directed to the component G. There are two jaws, and each busbar h passes through the corresponding jaws respectively. In this way, the first shielding portion can also form a certain internal support from the spacing area, and when the two busbars are relatively fitted, the two busbars can be relatively supported. In this example, the jaws are kept elastically against and clamped on both sides of the width direction of the busbar h. Here, the elastic clamping will not cause the clamping deformation of the busbar, and reduce the probability of damaging the component due to the light beam being directed to the component due to accidental contact with the clamp.

[0044] Furthermore, the shielding part formed by the first shielding module 111 and the second shielding module 121 includes a first shielding portion d1 located in the spacing area, a second shielding portion d2 and a third shielding portion d3 located respectively on the outside of the front faces of the two busbars, wherein the second shielding portion d2 and the third shielding portion d3 form shielding panels w from the outside, wherein the two shielding panels w can also form airflow guides to assist the smoke and dust processor 21 in collecting the smoke, dust, and debris waste. Here, based on the effective shielding formed by the three shielding portions, burns on the component surface are avoided; at the same time, based on the formed airflow guide, it is more conducive to the collection of smoke, dust, and debris waste.

[0045] The light beams emitted by each laser emitter 20 are respectively directed to the front, front and rear sides, top surface of the corresponding busbar h and the back surface of another busbar h. The light beams emitted by the two laser emitters 20 cover the welding ends of the two busbars h in an intersecting and complementary manner, and the first clamp 11 and the second clamp 12 form a matching docking to block the light beams emitted by the laser emitter to the component G; the smoke and dust processor 21 continuously collects the smoke, dust, and debris waste generated by the laser burning the glue layer based on the flowing gas; the visual camera 22 is used to obtain the upright state of the two busbars in the clamping. If the busbar is tilted and the tilt angle cannot fully cover the welding end, it is necessary to divide the work to adjust the state of the busbar or actively give up the glue removal of the welding end of the busbar. The protective cover 23 hides the laser emitter 20.

[0046] In some specific embodiments, each laser emitter 20 can be rotated and adjusted around the width direction of the busbar h. The beam angle and range adjustment of the welding end of the busbar of different sizes are met to increase the practicality of laser glue removal. In this example, each laser emitter 20 includes a device body 200 extending along the width direction of the busbar h, and a transmitter head 201 rotatably mounted at the end of the device body 200, wherein the transmitter head 201 can be rotated and adjusted around the length direction of the device body 200 to change the beam processing area and angle. The smoke and dust processor 21 includes a negative pressure dust collecting hood 210 located at the dust collecting port facing the interval area, and an airflow purge component 211 arranged in front of the interval area, wherein the smoke, dust, and debris waste formed by laser burning are gathered to the negative pressure dust collecting hood 210 in the same direction of front blowing and rear suction. Avoid open flames and safety accidents. Then, a light filler 24 is also provided in the protective cover 23. When the visual camera 22 obtains information, the light filler 24 performs light fill to ensure the clarity of the acquired photos.

[0047] In this example, the airflow purge component 211 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, wherein the nozzle c is facing the spacing area. Based on airflow purge to avoid the occurrence of hanging edges of some debris waste, smoke, dust, and debris waste are comprehensively collected, the residual rate of debris waste is reduced, and the probability of safety accidents or burns to components caused by residual debris waste is reduced. Specifically, the mounting seat a can be adjusted up and down and front and back; that is, based on the up and down and front and back position adjustment, it can meet the coverage and purge of busbar welding ends of different sizes. A flipping blade is provided at the end of the nozzle c, wherein the flow direction of the airflow in the up and down direction is changed during the flipping of the blade to cover the welding ends of the two busbars. Based on the change in the direction of the airflow, the occurrence of purge dead corners is avoided, and at the same time, the direction of the purge force is different, which reduces the probability of the so-called hanging edges. Regarding hanging edges: When the entire adhesive layer falls off, the fallen adhesive layer may be hung on the front side of the busbar during the purge process to form a hanging edge, and the hanging edge cannot be blown away by blowing in the same direction. Therefore, the hanging edge will remain on the busbar. When the laser debonding system is detached from the busbar, the remaining hanging edge will fall randomly, thus posing a safety hazard (such as accidental fire and burns on the component surface).

[0048] In addition, the busbar clamping unit 1 also includes a clamping power device 13, a first clamping arm 14 and a second clamping arm 15 that move toward each other based on the clamping power device 13, wherein the first clamping arm 14 is fixedly connected to the first clamp head 11, and the second clamping arm 15 is fixedly connected to the second clamp head 12, so that clamping and disengagement are implemented during the relative movement of the first clamping arm 14 and the second clamping arm 15.

[0049] In summary, after adopting the laser debonding system, firstly, the busbar is clamped by matching the first chuck and the second chuck to form a barrier between the welding end and the component in the upper and lower directions; secondly, the light beams emitted by the two laser emitters cover the welding ends of the two busbars in an intersecting and complementary manner, and the first chuck and the second chuck form a matching docking to block the light beam emitted by the laser emitter to the component; finally, the glue layer is separated from the busbar under the laser burning (1 to 3 seconds) formed by the two laser emitters, and the smoke, dust, debris and waste generated are collected in the smoke processor to quickly complete the debonding of the welding ends of the two busbars. Therefore, on the one hand, the present invention adopts laser to form cross and overlap to The two busbar welding ends are covered, and the light beam directed to the component is shielded by the obstruction of the two matching chucks, so that the light beam burns in a short time to remove the glue layer and avoids the damage of the component caused by the light beam; on the other hand, the smoke, dust, and debris waste generated by the laser burning of the glue layer are collected based on the smoke and dust processor to avoid the occurrence of open flames or safety accidents caused by the flying of the peeling glue layer. At the same time, it takes about 5 seconds from clamping to laser removal, which meets the needs of existing assembly line operations; thirdly, the elastic clamping based on the jaws will not cause the clamping deformation of the busbar, and reduce the probability of damaging the component due to the light beam directed to the component due to accidental contact with the chuck, and it is convenient The effective shielding formed by the three shielding parts can avoid burns on the surface of the component; at the same time, based on the airflow guidance formed, it is more conducive to the collection of smoke, dust, and debris waste (that is, there is a technical connection between shielding and smoke treatment); fourthly, in the same direction of front blowing and rear suction, the smoke, dust, and debris waste formed by laser burning are gathered into the negative pressure dust collecting hood, wherein the airflow is used to blow 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 caused by residual debris waste or burns to components; 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 of busbar welding ends of different sizes; or based on the change of airflow direction, to avoid the occurrence of purging dead angles, and at the same time, the blowing force direction is different, reducing the probability of so-called hanging edge; fifthly, each laser emitter can be rotated and adjusted around the width direction of the busbar to meet the beam angle and range adjustment of busbar welding ends of different sizes, so as to increase the practicality of laser degumming; sixthly, based on the visual camera, the upright state of the two busbars is obtained. If the busbar is tilted and the tilt angle cannot fully cover the welding end, it is necessary to divide the work to adjust the state of the busbar or actively give up the degumming of the welding end of the busbar.

[0050] 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 laser glue removal system for busbar welding ends, characterized in that: The laser glue removal system includes a busbar clamping unit and a laser processing unit. The busbar clamping unit includes a first clamp and a second clamp that are based on the interval area between the two busbars and move relatively along the width direction of the busbars to form a clamp, wherein the first clamp and the second clamp can be matched and docked to form an upper and lower barrier between the welding end of the busbar and the component, and the welding end of each busbar includes a front and back surface, front and rear side surfaces, and a top surface; The laser processing unit includes two laser emitters respectively based on each bus bar and intersecting with the front and back of the bus bar, and a smoke processor facing the interval area, wherein the light beam emitted by each laser emitter is respectively emitted to the front, front and rear side surfaces, top surface of the corresponding side bus bar and the back surface of another bus bar, and the light beams emitted by the two laser emitters cover the welding ends of the two bus bars in an intersecting and complementary manner, and the first clamp and the second clamp form a matching docking to shield the light beam emitted by the laser emitter to the component; The smoke and dust processor continuously collects smoke, dust, and debris waste generated by laser burning the glue layer based on the flowing gas.

2. The laser glue removal system for busbar welding ends according to claim 1, characterized in that: The first clamp and the second clamp are matched to form a jaw for two bus bars to pass through, wherein the two opposite sides of the jaw are clamped on both sides of the bus bar in the width direction.

3. The laser glue removal system for busbar welding ends according to claim 2, characterized in that: The first chuck includes a first clamp module and a first shielding module formed on the first clamp module; the second chuck includes a second clamp module and a second shielding module formed on the second clamp module, wherein the first clamp module and the second clamp module are relatively fitted to form a clamp area, the first shielding module and the second shielding module are matched to form the jaws, and the first shielding module and the second shielding module shield the light beam directed to the component.

4. The laser glue removal system for busbar welding ends according to claim 3, characterized in that: The shielding part formed by the first shielding module and the second shielding module includes a first shielding portion located in the spacing area, a second shielding portion and a third shielding portion respectively located on the relatively outer sides of the front sides of the two bus bars, wherein the second shielding portion and the third shielding portion respectively form shielding enclosures from the outside, wherein the two shielding enclosures can also form airflow guides to assist the smoke processor in collecting the smoke, dust, debris and waste.

5. The laser glue removal system for busbar welding ends according to claim 4, characterized in that: There are two jaws, and each bus bar passes through the corresponding jaw.

6. The laser glue removal system for busbar welding ends according to claim 2, 3, 4 or 5, characterized in that: The jaws are kept elastically contacting and clamping at two sides of the busbar in the width direction.

7. The laser glue removal system for busbar welding ends according to claim 1, characterized in that: The smoke and dust processor comprises a negative pressure dust collecting hood located at a dust collecting port facing the interval area, wherein the negative pressure dust collecting hood forms a gas flow based on negative pressure to collect smoke, dust, debris and waste.

8. The laser glue removal system for busbar welding ends according to claim 7, characterized in that: The negative pressure dust hood is located behind the spacing area, and the smoke and dust processor also includes an airflow blowing component arranged in front of the spacing area, wherein the smoke, dust, debris and waste formed by laser burning are collected into the negative pressure dust hood during the same-direction operation of front blowing and rear suction.

9. The laser glue removal system for busbar welding ends according to claim 8, characterized in that: The airflow blowing component comprises a mounting seat, an airflow pipe arranged on the mounting seat and extending downward, and a nozzle installed at the bottom of the airflow pipe, wherein the nozzle faces the spacing area.

10. The laser glue removal system for busbar welding ends according to claim 9, characterized in that: The mounting seat can be adjusted up and down and forward and backward; and / or, a flip blade is provided at the end of the nozzle, wherein the flow direction of the airflow in the vertical direction is changed during the flipping of the blade to cover the two busbar welding ends.

11. The laser glue removal system for busbar welding ends according to claim 1, characterized in that: Each of the laser emitters is arranged to be rotatable and adjustable around the width direction of the busbar.

12. The laser glue removal system for busbar welding ends according to claim 1, characterized in that: The laser glue removal system also includes a visual camera for detecting the erection status of the two bus bars.

Citation Information

Patent Citations

  • Automatic assembly production line for power battery module

    CN110649309A

  • Laser welding apparatus comprising laser beam blocking block

    CN110740835A