Laser transfer printing equipment

Abstract

The utility model discloses laser transfer printing equipment. The laser transfer printing equipment comprises a battery piece conveying module, a laser processing module, a carrier plate loading module and a slurry filling module, the battery piece conveying module is used for feeding and discharging before and after transfer printing of battery pieces. The carrier plate loading module is arranged above a battery piece transmission path and comprises a substrate with a hollow middle part and a carrier plate fixing module on the substrate, the substrate is used for carrying a carrier plate with a downward bottom surface, the bottom surface of the carrier plate is provided with a groove, and the groove is located at the hollow part of the substrate; the slurry filling module is arranged below the carrier plate loading module and comprises a slurry filling head and a movement mechanism, and the movement mechanism drives the slurry filling head to move back and forth in the length direction of the carrier plate so as to fill the groove with slurry; the laser processing module is arranged above the carrier plate loading module and used for laser transfer printing. The support plate is fixedly arranged, so that the positioning problem caused by overturning of the support plate is avoided, the slurry filling module can reciprocate along the support plate, the next slurry filling transfer printing is directly performed after the transfer printing is finished once, and the support plate is prevented from being replaced.

Description

Technical Field

[0001] This utility model belongs to the field of solar photovoltaic technology, specifically relating to a laser transfer device. Background Technology

[0002] In the fabrication process of solar cells, laser pattern transfer printing (PTP) technology is used to print fine electrode grid lines on solar cells, ultimately forming a patterned grid line structure on the solar cell.

[0003] Currently, in the process of using laser transfer paste to print fine electrode grid lines, flexible transparent films are mostly used as paste carriers. A laser is then used to transfer the paste onto the solar cell through the flexible transparent film. This method can meet the requirements of laser transfer of paste, but it also has some limitations. On the one hand, since the film is a disposable transfer carrier, its recycling and reuse process is complex, resulting in high costs for film transfer. On the other hand, the film carrier is limited by the material roll transport and positioning characteristics, leading to relatively complex use, significant equipment structural limitations, and the need for the processing cycle to match the cycle times of upstream and downstream equipment. Furthermore, the film is a flexible material, and it deforms to some extent when carrying / transferring paste, which affects the effect of the transferred electrode grid lines and the transfer yield. Utility Model Content

[0004] In view of one or more of the above-mentioned defects or improvement needs of the prior art, this utility model provides a laser transfer printing device that can accurately realize the laser transfer of paste using a rigid light-transmitting carrier plate, improve the reusability of the paste carrier, reduce the application cost of the paste carrier, and ensure the efficiency of laser transfer printing and the quality of grid line preparation.

[0005] To achieve the above objectives, this utility model provides a laser transfer printing device, including a battery cell conveying module, a laser processing module, a carrier plate loading module, and a slurry filling module;

[0006] The battery cell conveying module is used for picking up and conveying the battery cells to be processed and for unloading the battery cells after transfer processing.

[0007] The carrier plate loading module is positioned above the cell transport path and includes a substrate with a central cutout and a carrier plate fixing module mounted on the substrate. The substrate is used to support the rigid light-transmitting carrier plate with its bottom surface facing down. The bottom surface of the rigid light-transmitting carrier plate has grooves for filling slurry. The grooves are located in the cutout portion of the substrate when the rigid light-transmitting carrier plate is supported by the substrate.

[0008] The slurry filling module is located below the carrier plate loading module and includes a slurry filling head and a motion mechanism. The motion mechanism can drive the slurry filling head to reciprocate along the length of the rigid light-transmitting carrier plate to fill the bottom groove of the rigid light-transmitting carrier plate with slurry.

[0009] The laser processing module is positioned above the carrier loading module and is used to transfer the paste on the rigid light-transmitting carrier to the battery cell after the rigid light-transmitting carrier is vertically aligned with the battery cell to be processed.

[0010] As a further improvement of this utility model, an adsorption part is provided around the hollow part of the substrate, and a plurality of vacuum adsorption holes are provided on the bottom surface of the adsorption part, and the vacuum adsorption holes are connected to a vacuum generating device.

[0011] As a further improvement of this utility model, the rigid light-transmitting carrier plate includes a slurry bearing part disposed in the middle, the groove is located in the slurry bearing part, the slurry filling head covers the slurry bearing part in the width direction of the rigid light-transmitting carrier plate, and the stroke of the motion mechanism in the length direction is greater than the length of the slurry bearing part.

[0012] As a further improvement of this utility model, the rigid light-transmitting carrier plate also includes receiving portions disposed on both sides of the slurry bearing portion in the length direction, the receiving portions being used to accommodate the slurry filling head after completing one slurry filling.

[0013] As a further improvement of this utility model, a guide positioning mechanism is provided at the four corners of the substrate for guiding and positioning the rigid light-transmitting carrier plate during loading.

[0014] As a further improvement of this utility model, the battery cell conveying module includes an alternating transport component;

[0015] The alternating transport assembly has two platform units that can move alternately in a first direction. Each platform unit is respectively mounted on a Z-axis module. The lifting and lowering control of the platform units by the Z-axis module can realize the picking up of the battery cells to be processed and the unloading of the battery cells after transfer.

[0016] In this case, the battery cells on the stage unit are located directly below the rigid, light-transmitting carrier plate on the carrier plate loading module after the slurry filling is completed during the slurry transfer process.

[0017] An adjustment component is also provided between the platform unit and the Z-axis module. The adjustment component includes a Y-axis module and an angle adjustment module, so that each battery cell on the platform unit can be adjusted in the plane XYθ under the control of each module.

[0018] As a further improvement of this utility model, the battery cell conveying module also includes a feeding line and a discharging line disposed upstream and downstream of the alternating transport component.

[0019] As a further improvement of this utility model, a carrier plate positioning module is also provided above the carrier plate loading module. The carrier plate positioning module is used to perform positioning detection on the rigid light-transmitting carrier plate after the slurry filling is completed before transfer printing; and / or,

[0020] A cell positioning module is provided above the alternating transport component to perform visual positioning of the cells to be processed after they have been picked up from the platform unit. The cell positioning module is located before the carrier loading module.

[0021] As a further improvement of this utility model, the slurry filling module includes a slurry filling head disposed below the substrate. The slurry filling head is disposed on a conveyor belt assembly, and the conveyor belt assembly can drive the slurry filling head to move back and forth relative to the substrate, and complete the filling of slurry in the groove on the bottom surface of the rigid light-transmitting carrier during the back and forth movement of the slurry filling head.

[0022] As a further improvement of this utility model, the conveyor belt assembly includes two conveyor belts arranged parallel to each other in a first direction. The two conveyor belts extend in a second direction respectively, and the slurry filling head is mounted on the bottom of the two conveyor belts by a mounting bracket. The slurry filling head can be driven by the two conveyor belts to move back and forth in the second direction relative to the rigid light-transmitting carrier plate on the substrate.

[0023] As a further improvement of this utility model, the laser processing module includes a laser component disposed on a motion component, the laser component being able to move back and forth under the drive of the motion component to align with each slurry groove on the rigid light-transmitting substrate; or, the laser processing module includes a galvanometer, the galvanometer being used to align with each slurry groove on the rigid light-transmitting substrate.

[0024] As a further improvement of this utility model, the rigid light-transmitting carrier plate is a rigid light-transmitting carrier plate made of glass, so as to perform multiple slurry filling and slurry transfer without replacing the rigid light-transmitting carrier plate.

[0025] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0026] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0027] (1) In the laser transfer equipment of this utility model, the paste filling module is set below the carrier loading module, and the rigid light-transmitting carrier is fixedly set, so there is no need to flip the rigid light-transmitting carrier, thus avoiding the positioning problem of the rigid light-transmitting carrier caused by flipping.

[0028] (2) In the laser transfer equipment of this utility model, the paste filling module can reciprocate along the rigid light-transmitting carrier plate. After the transfer is completed once, there is no need to move and replace the rigid light-transmitting carrier plate. The next paste filling and transfer can be carried out directly, avoiding the need to replace the rigid light-transmitting carrier plate after each transfer.

[0029] (3) The laser transfer equipment in this utility model uses a hard transparent glass substrate, which can be reused thousands of times, greatly reducing the frequency of replacing the hard transparent substrate.

[0030] (4) The laser transfer equipment of this utility model provides accommodating parts at both ends of the rigid light-transmitting carrier plate along its length, so that the slurry filling head after the slurry filling is completed can run and be accommodated in the accommodating part, maintaining the contact between the slurry filling head and the rigid light-transmitting carrier plate, and avoiding slurry residue caused when the slurry filling head leaves the rigid light-transmitting carrier plate. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the laser transfer equipment in this embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of the structure of the battery cell conveying module of the laser transfer equipment in this embodiment of the present invention;

[0034] Figure 3 This is an isometric view of the combined configuration of the carrier loading module and the slurry filling module in this embodiment of the present invention;

[0035] Figure 4 This is a bottom view of the rigid light-transmitting carrier plate in an embodiment of this utility model;

[0036] Figure 5 This is a bottom view of the carrier loading module in an embodiment of this utility model;

[0037] Figure 6 This is a bottom view of the combined arrangement of the carrier plate loading module and the slurry filling module in an embodiment of this utility model;

[0038] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0039] 100. Cell conveying module; 110. Alternating transport assembly; 120. First feeding line; 130. Second feeding line; 140. Alignment assembly; 150. Third feeding line; 160. First discharge line; 170. Second discharge line; 180. Third discharge line;

[0040] 200. Cell positioning module; 300. Laser processing module; 400. Carrier plate loading module; 410. Substrate; 420. Cutout section; 430. Adsorption section; 440. Guide positioning mechanism; 500. Carrier plate positioning module; 600. Slurry filling module; 610. Slurry filling head; 620. Conveyor belt assembly; 630. Drive mechanism; 640. Mounting bracket; 700. Cell detection module; 800. Rigid light-transmitting carrier plate; 810. Groove. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0042] In the description of this utility model, it should be understood that, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] Below, for reference Figures 1-6 This invention describes a laser transfer device according to a preferred embodiment of the present invention.

[0047] In a preferred embodiment, the laser transfer equipment uses a rigid, transparent carrier plate to hold the paste to be transferred, and the rigid, transparent carrier plate is recycled to complete the grid line transfer process of multiple solar cells, ensuring the continuity of the grid line transfer of the solar cells.

[0048] It should be noted that the aforementioned rigid light-transmitting carrier plate is a rigid material with high laser transmittance and easy processing of slurry-bearing grooves, such as glass, quartz, or rigid plastic. Furthermore, the rigid light-transmitting carrier plate described in this invention refers to a carrier plate whose main body is a rigid light-transmitting material, which can be a single layer or multiple layers, or a combination of rigid and flexible light-transmitting materials. Preferably, the rigid light-transmitting carrier plate is a single layer or multiple layers of glass. One side of the carrier plate has slurry-bearing grooves, wherein the patterned grooves correspond to the shape of the grid electrodes to be transferred. Preferably, the rigid light-transmitting carrier plate is a rigid light-transmitting carrier plate made of glass. It can be reused thousands of times, greatly reducing the frequency of replacing the rigid light-transmitting carrier plate.

[0049] Meanwhile, in a preferred embodiment, the side of the rigid light-transmitting carrier plate with the slurry carrying groove is set facing downwards, and the side of the rigid light-transmitting carrier plate with the carrying groove is referred to as the bottom surface. The battery cell to be transferred is located below the bottom surface of the rigid light-transmitting carrier plate during the transfer process.

[0050] like Figure 1As shown, the laser transfer equipment in the preferred embodiment includes a cell conveying module 100, a laser processing module 300, a carrier loading module 400, and a slurry filling module 600.

[0051] The cell transfer module 100 is used to transfer the cells to be processed to the laser processing module 300, and to transfer the cells after the transfer paste is applied from the laser processing module 300 for output.

[0052] Meanwhile, in the preferred embodiment, the carrier loading module 400 is positioned above the battery cell transport path, and includes a substrate 410 with a central cutout and a carrier fixing module disposed on the substrate 410. The substrate 410 is used to support the rigid, light-transmitting carrier plate with its bottom surface facing downwards, and the bottom surface of the rigid, light-transmitting carrier plate has grooves for filling the adhesive to be transferred, corresponding to the grid line pattern to be transferred.

[0053] Accordingly, the slurry filling module 600 is disposed below the carrier loading module 400. It includes a slurry filling head 610 for filling the bottom surface of the carrier plate with slurry and a motion mechanism. The slurry filling head 610 is disposed on the motion mechanism, which drives the slurry filling head 610 to reciprocate along the length of the rigid light-transmitting carrier plate, and finally completes the slurry filling of the slurry grooves on the bottom surface of the rigid light-transmitting carrier plate.

[0054] In addition, the laser processing module 300 is positioned above the carrier loading module 400. The solar cells to be transferred can be vertically aligned with the rigid light-transmitting carrier loaded on the carrier loading module 400 under the drive of the solar cell conveying module 100, and the laser processing module 300 will transfer the paste in the paste grooves onto the solar cells.

[0055] In the preferred embodiment of the laser transfer equipment, a rigid, transparent carrier plate is fixed at the carrier plate loading module 400. After the laser processing module 300 completes the transfer of the slurry in the grooves on the bottom surface of the carrier plate, the transferred solar cells continue to be output to the rear end under the drive of the solar cell conveying module 100. At the same time, the slurry filling module 600 performs slurry filling operations on the transferred rigid, transparent carrier plate, ensuring that when the next solar cell to be transferred is conveyed to the area below the carrier plate loading module 400, the rigid, transparent carrier plate fixed at the carrier plate loading module 400 can complete another slurry filling, thereby realizing the recycling of the rigid, transparent carrier plate and ensuring the continuous transfer of multiple solar cells.

[0056] Furthermore, in the preferred embodiment, the cell conveying module 100 includes an infeed line, an outfeed line, and a transport component disposed between the two lines, spaced apart in a first direction. The transport component can reciprocate along the first direction between the two lines, and the carrier plate loading module 400 is positioned above the transport component's displacement path. The transport component then picks up the cells from the infeed line, vertically aligns the cells with the rigid, light-transmitting carrier plate on the carrier plate loading module 400, and transports the cells after paste transfer to the outfeed line, ultimately completing the output of the transferred cells.

[0057] More specifically, in the preferred embodiment, the feeding line preferably includes a first feeding line 120 and a third feeding line 150 spaced apart in a first direction. The first feeding line 120 is aligned and connected to the battery cell receiving module, continuously receiving battery cells to be transferred and conveying them to the third feeding line 150. The third feeding line 150 is aligned with the transport assembly, allowing the transport assembly to pick up battery cells on the third feeding line 150.

[0058] More preferably, in order to ensure the consistency of the position of each battery cell conveyed to the third feeding line 150, a second feeding line 130 is preferably provided between the first feeding line 120 and the third feeding line 150. The three feeding lines are arranged sequentially in the first direction. The battery cells to be transferred are conveyed to the third feeding line 150 after being transported by the first feeding line 120 and the second feeding line 130.

[0059] Meanwhile, alignment components 140 are provided on both sides of the second feeding line 130 in the second direction, wherein the second direction is perpendicular to the first direction. In the preferred embodiment, the alignment component 140 includes two alignment units spaced apart in the second direction. The two alignment units can move closer to or further away from each other in the second direction to contact both sides of the battery cells on the second feeding line 130 in the second direction, aligning and centering the battery cells, thereby correcting the deviation of the battery cells before transportation.

[0060] As an implementable example, the alignment unit in the preferred embodiment includes a plurality of elastic rollers spaced apart in a first direction. The plurality of elastic rollers contact the battery cells through the side wall surface, thereby achieving alignment and centering of the battery cells while avoiding rigid contact with the battery cells, thus reducing damage and deformation of the battery cells.

[0061] More specifically, in the preferred embodiment, the discharge production line includes a first discharge production line 160 and a second discharge production line 170 arranged sequentially in a first direction. The first discharge production line 160 is aligned with the transport component and is used to receive the battery cells after slurry transfer on the transport component and transport them to the second discharge production line 170, which then transfers the transferred battery cells to subsequent workstations.

[0062] For example, in actual setup, each feeding line and discharge line is preferably a pair of belt conveyors, each including two conveyor belts arranged parallel to each other in the second direction.

[0063] Meanwhile, in the preferred embodiment, the transport component is preferably an alternating transport component 110, which includes a guide rail extending along a first direction and two platform units disposed on both sides of the guide rail in a second direction. The two platform units are respectively mounted on a Z-axis module, and the Z-axis module is assembled with the guide rail via an X-axis module. This allows the platform units to achieve vertical lifting control via the Z-axis module and reciprocating movement in the first direction via the X-axis module. Furthermore, the lifting control of the two platform units facilitates mutual avoidance during their alternating movement in the first direction.

[0064] In a preferred embodiment, both the third feeding line 150 and the first discharging line 160 include two conveyor belts arranged parallel to each other in the second direction, with the distance between the two conveyor belts being greater than the width of the two platform units in the second direction. Simultaneously, the two platform units can be vertically raised and lowered between the two conveyor belts under the lifting control of the Z-axis module, thereby completing the picking up of battery cells from or unloading them from the two conveyor belts.

[0065] Specifically, when taking battery cells from the third feed line 150, the preferred taking process is as follows:

[0066] One of the platform units is controlled to move on the guide rail to below the third feeding line 150. The Z-axis module of the platform unit is then activated, causing the platform unit to rise until it passes over the two conveyor belts, lifting the battery cells on the conveyor belts and detaching them, thus completing the unloading of the battery cells to be transferred onto the platform unit. Afterward, the platform unit can be moved horizontally along the X-axis (first direction) under the drive of the X-axis module, sequentially moving the battery cells below the carrier loading module 400 and above the first discharge line 160.

[0067] After the platform unit reaches the first discharge production line 160, the Z-axis module controls the platform unit to descend until the platform unit descends and crosses the two conveyor belts of the first discharge production line 160, and places the transferred battery cells on the two conveyor belts, thus completing the unloading of the battery cells from the platform unit.

[0068] In another implementation, the width of the platform unit in the second direction can also be greater than the distance between the two conveyor belts in the second direction, and the top surface of the platform unit is provided with a groove larger than the width of the belt at the position corresponding to the two conveyor belts. In this case, the material loading and unloading process of the platform unit is similar to the aforementioned process, except that when the platform unit loads and unloads materials between the two conveyor belts by lifting and lowering, the two conveyor belts are located in the groove of the platform unit.

[0069] By utilizing the setup and alternating operation of the two platform units on the alternating transport component 110, multiple solar cells can be alternately loaded, transferred, and unloaded, ensuring the continuity of solar cell transmission during the transfer process and improving the processing efficiency of the laser transfer equipment.

[0070] Furthermore, for the specific configuration of the alternating transport component 110 in the preferred embodiment, further reference can be made to the technical content disclosed in patent document CN115806160A, which will not be elaborated here.

[0071] More specifically, to improve the transmission efficiency of the battery cells and control the transmission cycle of the battery cell conveying module 100, in the preferred embodiment, the third feeding line 150 and the first discharging line 160 can simultaneously feed and unload two battery cells, meaning the lengths of the two lines are sufficient for simultaneous feeding of two battery cells. At this time, the platform unit has two bearing positions spaced apart in the first direction, allowing the platform unit to simultaneously pick up and unload two battery cells, such as... Figure 2 As shown in the image.

[0072] For a platform unit with two support positions, the carrier loading module 400 in the preferred embodiment is preferably capable of separately fixing two rigid, light-transmitting carriers in the first direction. Alternatively, in the preferred embodiment, the length of the rigid, light-transmitting carrier fixed to the carrier loading module 400 in the first direction corresponds to the length of the two solar cells in the first direction on the two support positions, thereby satisfying the separate transfer operation of each solar cell on the platform unit. That is to say, the carrier loading module 400 in the preferred embodiment can be used for the adsorption loading of a single rigid, light-transmitting carrier or the simultaneous loading of multiple rigid, light-transmitting carriers. Furthermore, the number of slurry grooves opened on a single rigid, light-transmitting carrier can correspond to the transfer processing of a single solar cell or multiple solar cells; this can be set and changed according to production needs, and will not be elaborated here.

[0073] like Figure 4As shown, in the preferred embodiment, the rigid light-transmitting carrier plate 800 includes a slurry-bearing portion, which includes patterned grooves 810 for bearing the slurry. Figure 4 In the middle, the area inside the dotted line is the slurry bearing part.

[0074] like Figure 5 As shown, the carrier loading module 400 in the preferred embodiment includes a substrate 410 with a central cutout and a carrier fixing module. The rigid light-transmitting carrier can be placed bottom-side down on the substrate 410, with the paste-bearing portion of the rigid light-transmitting carrier located in the cutout portion 420. After paste filling, a laser irradiates the grooves from above the rigid light-transmitting carrier, transferring the paste within the grooves onto the underlying solar cell. Preferably, the carrier fixing module fixes the carrier to the substrate 410 to prevent the rigid light-transmitting carrier from shifting during paste filling. The rigid light-transmitting carrier can be magnetically attracted, negatively pressure adsorbed, or clamped onto the substrate 410; correspondingly, the carrier fixing module can be a magnetic attraction component, a negative pressure adsorption component, or a clamping component.

[0075] In the preferred embodiment, the carrier loading module 400 is as follows: Figure 5 , Figure 6 As shown, the substrate 410 includes a cutout portion 420 and adsorption portions 430 distributed around the cutout portion 420. The bottom surface of the adsorption portion 430 has loading positions for adsorbing and loading a rigid light-transmitting carrier plate. The bottom surface of the adsorption portion 430 has multiple vacuum adsorption holes, which are connected to a vacuum generator, allowing the rigid light-transmitting carrier plate to be adsorbed and loaded into the adsorption portion 430, thereby completing the loading and fixing of the rigid light-transmitting carrier plate. Preferably, the adsorption portions 430 are disposed on any two sides or around the cutout portion 420, thereby uniformly and firmly fixing the rigid light-transmitting carrier plate onto the carrier plate loading module 400.

[0076] More specifically, a guide positioning mechanism 440 is preferably provided at the four corners of the substrate 410 for guiding and positioning the rigid light-transmitting carrier plate during adsorption and fixation. In a preferred embodiment, the guide positioning mechanism 440 is preferably a guide groove made of plastic material, which not only guides and positions the rigid light-transmitting carrier plate during fixed loading, but also provides protection for the rigid light-transmitting carrier plate, ensuring the reliability and accuracy of the loading and setting of the rigid light-transmitting carrier plate.

[0077] Also see Figure 3 and Figure 6In the preferred embodiment, the slurry filling module 600 is configured corresponding to the carrier loading module 400, and includes a slurry filling head 610 and a motion mechanism disposed below the carrier loading module 400. The slurry filling head 610 covers the width of the slurry-bearing portion of the rigid light-transmitting carrier in the width direction, and the slurry filling head 610 is mounted on the motion mechanism. The stroke of the motion mechanism is greater than the length of the slurry-bearing portion of the rigid light-transmitting carrier, allowing the motion mechanism to drive the slurry filling head 610 to reciprocate along the length direction, thereby completing the slurry filling of the carrier.

[0078] It should be noted that the length direction is defined by the movement direction of the slurry filling module 600 and the width direction is defined by the extension direction of the slurry filling head 610, rather than by the actual length and width of the rigid light-transmitting carrier plate.

[0079] As a preferred embodiment, see [link to previous document]. Figure 6 The motion mechanism is a conveyor belt assembly 620. The slurry filling head 610 is mounted on the conveyor belt assembly 620 and can move back and forth relative to the carrier plate loading module 400 under the drive of the conveyor belt assembly 620. The slurry filling head 610 fills the rigid light-transmitting carrier plates adsorbed on the bottom surface of the carrier plate loading module 400 with slurry.

[0080] In actual installation, the conveyor belt assembly 620 preferably includes two conveyor belts arranged parallel to each other in a first direction (i.e., the aforementioned width direction). The two conveyor belts extend along a second direction (i.e., the aforementioned length direction), and a drive mechanism 630 is provided corresponding to the drive of the conveyor belts. The drive mechanism 630 is further preferably a drive motor. Meanwhile, the slurry filling head 610 is preferably mounted on the bottom of the two conveyor belts via a U-shaped mounting bracket 640. The reciprocating movement control of the slurry filling head 610 is achieved by controlling the movement of the two conveyor belts.

[0081] Thus, the slurry filling module 600 is positioned below the carrier loading module 400, and the rigid light-transmitting carrier is fixedly installed, eliminating the need to flip the rigid light-transmitting carrier and avoiding positioning problems caused by flipping. The slurry filling module 600 can reciprocate along the rigid light-transmitting carrier; after one transfer is completed, the next slurry filling and transfer can be performed directly, avoiding the need to replace the rigid light-transmitting carrier after each transfer.

[0082] In a preferred embodiment, such as Figure 4 As shown, the rigid light-transmitting carrier plate 800 has accommodating portions of a certain length on both sides of the slurry bearing section along its length. Figure 4In the diagram, the area within the dashed box shows the slurry-bearing portion, and the two sides of the dashed box along its length are receiving portions. These serve as accommodating portions during the reciprocating movement of the slurry filling head. Specifically, when the slurry filling head moves from the first side of the rigid transparent carrier plate to the second side, it stops at the receiving portion on the second side; when it moves from the second side to the first side, it stops at the receiving portion on the first side. This arrangement maintains contact between the slurry filling head 610 and the rigid transparent carrier plate, preventing slurry residue when the slurry filling head detaches from the rigid transparent carrier plate.

[0083] In other embodiments, after the rigid light-transmitting carrier plate is loaded on the substrate 410, the bottom surface of the carrier plate is flush with the bottom surface of the substrate 410 around the carrier plate. At this time, the slurry filling head 610 can move to the bottom of the carrier plate or the bottom of the substrate 410 around the carrier plate under the drive of the motion mechanism. By keeping the slurry filling head 610 on the bottom surface of the substrate 410, slurry residue can also be avoided to a certain extent.

[0084] Furthermore, as an example, the laser processing module 300 in the preferred embodiment includes a laser component disposed on a motion component. By controlling the motion component, the laser processing module 300 can be aligned with each paste groove on the bottom surface of the carrier plate, thereby completing the paste transfer in different areas.

[0085] However, as another feasible example, the laser processing module 300 in the preferred embodiment includes a two-dimensional galvanometer. In this case, there is no need to set up a motion module. The alignment of the processing beam with each slurry groove on the hard transparent carrier plate can be achieved by controlling the galvanometer.

[0086] More specifically, to achieve accurate alignment between the rigid light-transmitting carrier and the solar cell before transfer, in a preferred embodiment, a solar cell positioning module 200 is provided for positioning the solar cell, and / or, preferably, a carrier positioning module 500 is provided for positioning the rigid light-transmitting carrier. The solar cell positioning module 200 is positioned above the alternating transport assembly 110, specifically before the carrier loading module 400, and more preferably above the third feeding line 150, for visual positioning of the solar cells after they have been picked up by the carrier unit. The carrier positioning module 500 is positioned above the carrier loading module 400 for visual positioning of the loaded rigid light-transmitting carrier.

[0087] In addition, in order to achieve alignment adjustment between the carrier plate and the solar cell, an adjustment component is provided between the stage unit and the Z-axis module in the preferred embodiment. The adjustment component includes a Y-axis module and an angle adjustment module, so that the stage unit can be adjusted for displacement in the Y-axis direction (i.e., the second direction) and rotation in the plane relative to the Z-axis module. With the displacement control of the X-axis module in the first direction, the XYθ adjustment of the solar cell relative to the rigid light-transmitting carrier plate can be realized, thereby achieving accurate alignment between the rigid light-transmitting carrier plate and the solar cell.

[0088] It is understandable that, in cases where the platform unit has two or more support positions, each support position is connected to the Z-axis module through the same adjustment component, allowing the lifting and planar position adjustments of each support position to be performed synchronously, while simultaneously achieving the correction adjustment of multiple solar cells. Of course, each support position can also be independent of each other, with an adjustment component installed below each support position, allowing the solar cells on each support position to be adjusted for displacement individually.

[0089] Furthermore, in order to detect the quality of the slurry transfer of the battery cells, it is preferable to install a battery cell detection module 700 above the discharge production line to detect the effect after the battery cell transfer.

[0090] As a feasible example, in a preferred embodiment, a third discharge line 180 is provided after the second discharge line 170. In this case, the first discharge line 160, the second discharge line 170, and the third discharge line 180 are arranged sequentially in the first direction. Simultaneously, the cell detection module 700 is positioned above the third discharge line 180, such as... Figure 1 As shown in the image.

[0091] More preferably, the cell detection module 700 in the preferred embodiment is an AOI detection module.

[0092] By utilizing the combined configuration of the cell conveying module 100, cell positioning module 200, laser processing module 300, carrier loading module 400, carrier positioning module 500, slurry filling module 600, and cell detection module 700 in the laser transfer equipment, a cell feeding position, a cell positioning position, a cell transfer position, a cell discharge position, and a cell detection position can be sequentially formed in the first direction, accurately realizing the transfer processing of slurry on the cell.

[0093] Specifically, in the preferred embodiment, the operation process of the laser transfer equipment is preferably as follows:

[0094] (1) The battery cells to be processed are conveyed to the second feeding line 130 after passing through the first feeding line 120. The alignment component 140 aligns the passing battery cells to adjust the position and angle of the battery cells in the second direction.

[0095] (2) The cell positioning module 200 is used to visually position the cell to be transferred, and the alternating transport component 110 moves the cell to the bottom of the carrier plate loading module 400, so that the rigid light-transmitting carrier plate filled with slurry is vertically aligned with the cell. At the same time, during the process of the alternating transport component 110 transporting the cell, the slurry filling module 600 is controlled to perform slurry filling operation on the rigid light-transmitting carrier plate on the carrier plate loading module 400.

[0096] (3) Use the carrier plate positioning module 500 to visually position the relative position of the rigid light-transmitting carrier plate and the battery cell, and control the adjustment components in the stage unit to adjust the relative position of the carrier plate and the battery cell until the correction adjustment between the carrier plate and the battery cell is completed.

[0097] (4) Control the laser processing module 300 to work, align each slurry groove on the hard transparent substrate in sequence, and transfer the slurry in the groove to the battery cell.

[0098] (5) Control the alternating transport component 110 to drive the transferred battery cells to the first discharge line 160, and transfer the battery cells to the third discharge line 180 via the second discharge line 170, and the battery cell detection module 700 completes the detection of the battery cell transfer effect.

[0099] Furthermore, while one stage unit is performing laser transfer in process (4) above, another stage unit, through the lifting control of the Z-axis module and the translation control of the X-axis module, moves to the third feeding line 150 to pick up the second group of cells to be transferred. Afterward, the transferred cells and the second group of cells to be transferred are respectively driven by their respective stage units to the first discharge line 160 and the laser transfer station (below the carrier plate loading module 400). During the transfer of the cells from the third feeding line 150 to below the carrier plate, the slurry filling module 600 again fills the bottom surface of the rigid, transparent carrier plate with slurry. This cycle is repeated to achieve sequential transfer of slurry onto multiple cells, ensuring the continuity of the laser transfer operation and improving the processing efficiency of the laser transfer equipment.

[0100] The laser transfer equipment of this utility model utilizes a combination of a cell conveying module 100, a laser processing module 300, a carrier plate loading module 400, and a slurry filling module 600. By correspondingly positioning the carrier plate loading module 400 and the slurry filling module 600 above the cell conveying path, the cell can complete the laser transfer process during the conveying process. Furthermore, the rigid, light-transmitting carrier plate can be reused at the transfer station, effectively improving the utilization rate of the slurry carrier and reducing the production cost of cell transfer processing.

[0101] It should be noted that the "workstation" in this utility model refers to a location where a certain function is performed. When the carrier unit carries the battery cell to the corresponding workstation, it performs the corresponding function. At the same time, corresponding functional components are usually set up at the corresponding workstation. For example, a visual positioning workstation for the battery cell is formed at the third feeding line 150, and a battery cell positioning module 200 is set above the third feeding line 150. Another example is a transfer station formed at the carrier loading module 400, where a laser processing module 300 is set above the carrier loading module 400. Then, the battery cell and the rigid transparent carrier plate are vertically aligned at the transfer station, and the laser processing module 300 completes the transfer processing.

[0102] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser transfer printing device, characterized in that, This includes a cell conveying module, a laser processing module, a carrier loading module, and a slurry filling module; The battery cell conveying module is used for picking up and conveying the battery cells to be processed and for unloading the battery cells after transfer processing. The carrier plate loading module is positioned above the cell transport path and includes a substrate with a central cutout and a carrier plate fixing module mounted on the substrate. The substrate is used to support the rigid light-transmitting carrier plate with its bottom surface facing down. The bottom surface of the rigid light-transmitting carrier plate has grooves for filling slurry. The grooves are located in the cutout portion of the substrate when the rigid light-transmitting carrier plate is supported by the substrate. The slurry filling module is located below the carrier plate loading module and includes a slurry filling head and a motion mechanism. The motion mechanism can drive the slurry filling head to reciprocate along the length of the rigid light-transmitting carrier plate to fill the bottom groove of the rigid light-transmitting carrier plate with slurry. The laser processing module is positioned above the carrier loading module and is used to transfer the paste on the rigid light-transmitting carrier to the battery cell after the rigid light-transmitting carrier is vertically aligned with the battery cell to be processed.

2. The laser transfer equipment according to claim 1, characterized in that, An adsorption section is provided around the hollowed-out portion of the substrate, and a plurality of vacuum adsorption holes are provided on the bottom surface of the adsorption section, which are connected to a vacuum generating device.

3. The laser transfer equipment according to claim 1, characterized in that, The rigid light-transmitting carrier plate includes a slurry bearing portion disposed in the middle, the groove is located in the slurry bearing portion, the slurry filling head covers the slurry bearing portion in the width direction of the rigid light-transmitting carrier plate, and the stroke of the motion mechanism in the length direction is greater than the length of the slurry bearing portion.

4. The laser transfer equipment according to claim 3, characterized in that, The rigid light-transmitting carrier plate also includes receiving portions disposed on both sides of the slurry bearing portion along the length direction. The receiving portions are used to accommodate the slurry filling head after it has completed one slurry filling.

5. The laser transfer equipment according to claim 2, characterized in that, The substrate is provided with guide and positioning mechanisms at its four corners for guiding and positioning the rigid light-transmitting carrier plate during loading.

6. The laser transfer equipment according to claim 1, characterized in that, The battery cell delivery module includes an alternating transport component; The alternating transport assembly has two platform units that can move alternately in a first direction. Each platform unit is respectively mounted on a Z-axis module. The lifting and lowering control of the platform units by the Z-axis module can realize the picking up of the battery cells to be processed and the unloading of the battery cells after transfer. In this case, the battery cells on the stage unit are located directly below the rigid, light-transmitting carrier plate on the carrier plate loading module after the slurry filling is completed during the slurry transfer process. An adjustment component is also provided between the platform unit and the Z-axis module. The adjustment component includes a Y-axis module and an angle adjustment module, so that each battery cell on the platform unit can be adjusted in the plane XYθ under the control of each module.

7. The laser transfer equipment according to claim 6, characterized in that, The cell conveying module also includes a feeding line and a discharging line located upstream and downstream of the alternating transport component.

8. The laser transfer equipment according to claim 6, characterized in that, Above the carrier loading module, a carrier positioning module is also provided. This carrier positioning module is used to perform positioning detection on the rigid, translucent carrier after the slurry filling is completed before transfer printing; and / or, A cell positioning module is provided above the alternating transport component to perform visual positioning of the cells to be processed after they have been picked up from the platform unit. The cell positioning module is located before the carrier loading module.

9. The laser transfer equipment according to claim 1, characterized in that, The slurry filling module includes a slurry filling head disposed below the substrate. The slurry filling head is disposed on a conveyor belt assembly, and the conveyor belt assembly can drive the slurry filling head to move back and forth relative to the substrate, and complete the filling of slurry in the groove on the bottom surface of the rigid light-transmitting carrier during the back and forth movement of the slurry filling head.

10. The laser transfer equipment according to claim 9, characterized in that, The conveyor belt assembly includes two conveyor belts arranged parallel to each other in a first direction. The two conveyor belts extend in a second direction, and the slurry filling head is mounted on the bottom of the two conveyor belts by a mounting bracket. The slurry filling head can be driven by the two conveyor belts to move back and forth in the second direction relative to the rigid light-transmitting carrier plate on the substrate.

11. The laser transfer equipment according to claim 1, characterized in that, The laser processing module includes a laser component mounted on a motion component. The laser component can move back and forth under the drive of the motion component to align with each slurry groove on the rigid light-transmitting substrate. Alternatively, the laser processing module includes a galvanometer for aligning with each slurry groove on the rigid light-transmitting substrate.

12. The laser transfer equipment according to claim 1, characterized in that, The rigid light-transmitting carrier plate is a rigid light-transmitting carrier plate made of glass, which is used to perform multiple slurry filling and slurry transfer without replacing the rigid light-transmitting carrier plate.

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