Printing platform mechanism and laser printing device
By using a reflective component in the printing platform mechanism to achieve simultaneous exposure of the front and back sides of the solar cell, the problems of increased production complexity and time costs caused by separate processing of solar cells are solved, thereby improving production efficiency and product consistency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGWEI SOLAR ENERGY (CHENGDU) CO LID
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-19
AI Technical Summary
In existing technologies, the front and back exposures of solar cells need to be processed separately, which increases the complexity and time cost of production and affects the yield and consistency of the final product.
A printing platform mechanism is provided, including a stage, first and second masks, and a reflective assembly, which reflects laser light onto the unexposed side of the solar cell, thereby achieving simultaneous exposure of the front and back sides of the solar cell.
The process was simplified, the exposure time was shortened, the production efficiency was improved, the consistency and uniformity of the exposure conditions on both sides were ensured, the flipping error was reduced, and the product yield was improved.
Smart Images
Figure CN224263524U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laser printing technology, and more specifically, to a printing platform mechanism and a laser printing device. Background Technology
[0002] The THL (Copper Interconnect) production line process involves incoming yellow film solar cells, coating, printing the front side, flipping, printing the back side, developing, edge wrapping, and electroplating. The printing process exposes the coated solar cell surface with the photosensitive emulsion film, altering the properties of the photosensitive emulsion through light irradiation, while a patterned mask plate blocks the light source.
[0003] However, after completing the front exposure, in order to achieve the design requirements of bifacial electrodes or other bifacial structures, the solar cell must be flipped over and the back exposure process must be performed in the same manner. This step not only increases the complexity and time cost of production, but may also affect the yield and consistency of the final product due to errors generated during the flipping process. Utility Model Content
[0004] The purpose of this invention is to provide a printing platform mechanism and a laser printing device that can simultaneously expose the front and back sides of a solar cell, thereby improving the problems of increased production complexity, increased time costs, and reduced yield of the final product.
[0005] The embodiments of this utility model can be implemented as follows:
[0006] In a first aspect, this utility model provides a printing platform mechanism, comprising:
[0007] A support platform for placing solar cells, wherein the solar cells include a first side and a second side arranged opposite to each other;
[0008] The first mask is located on the first side and is used to transmit laser light to expose the first side.
[0009] The second mask, located on the second side, is used to transmit laser light to expose the second side;
[0010] The reflective component, located below the support platform, is used to receive and reflect the laser to the second side.
[0011] In an optional embodiment, the reflective assembly includes a first reflector and a second reflector, wherein the first reflector is used to receive and reflect laser light to the second reflector, and the second reflector is used to receive and reflect laser light to a second side.
[0012] In an optional implementation, the first and second reflectors are perpendicular to each other.
[0013] In an optional embodiment, the support platform is provided with a bracket and a sandwich layer, with the first mask plate located on the bracket and the second mask plate located in the sandwich layer.
[0014] In an optional implementation, the stage and the second mask are made of the same type of glass.
[0015] In an optional implementation, a support platform is used to place at least two solar cells, with a reflective component corresponding to each solar cell.
[0016] Secondly, this utility model provides a laser printing device, including a laser source and a printing platform mechanism as described in any of the foregoing embodiments; wherein the laser source is used to emit laser light, and the printing platform mechanism has a printing station corresponding to the laser source.
[0017] In an optional embodiment, the laser printing device further includes a feeding mechanism and a discharging mechanism located on both sides of the laser source; wherein the feeding mechanism is used to place the battery cells, the discharging mechanism is used to pick up the battery cells, and the printing platform mechanism has a feeding station corresponding to the feeding mechanism and a discharging station corresponding to the discharging mechanism.
[0018] In an optional implementation, the feeding mechanism includes a feeding suction cup corresponding to each battery cell, and the discharging mechanism includes a discharging suction cup corresponding to each battery cell.
[0019] In an optional embodiment, the laser printing apparatus further includes a conveyor track through which the printing platform mechanism can selectively move between the feeding station, the printing station, and the feeding station.
[0020] The beneficial effects of the printing platform mechanism and laser printing device provided in this embodiment of the utility model include:
[0021] This invention provides a printing platform mechanism and a laser printing device. The printing platform mechanism includes a support stage, a first mask, a second mask, and a reflective component. The support stage holds a solar cell. The solar cell includes a first side and a second side arranged opposite to each other. The first mask is located on the first side of the solar cell and is used to transmit laser light to expose the first side. Correspondingly, the second mask is located on the second side of the solar cell and is used to transmit laser light to expose the second side. The reflective component is located below the support stage and is used to receive and reflect laser light to the second side. This arrangement enables simultaneous exposure of both sides of the solar cell, avoiding the step of reversing the solar cell to process both sides separately in traditional methods. This simplifies the process flow, shortens the overall exposure time, and improves production efficiency. Furthermore, simultaneous exposure of both sides ensures consistent exposure conditions on both sides, reducing errors caused by flipping and repositioning, and improving the consistency and uniformity of exposure. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the printing platform mechanism provided in this embodiment;
[0024] Figure 2 This is a schematic diagram of the structure of the laser printing device provided in this embodiment.
[0025] Icons: 10-Laser printing device; 20-Battery cell; 30-Laser source; 40-Feeding mechanism; 41-Feeding suction cup; 50-Discharge mechanism; 51-Discharge suction cup; 60-Conveyor track; 100-Printing platform mechanism; 110-Carrier platform; 130-First mask; 150-Second mask; 170-Reflective component; 171-First reflector; 173-Second reflector. Detailed Implementation
[0026] In related technologies, after completing the front exposure, in order to achieve the design requirements of double-sided electrodes or other double-sided structures, the cell must be flipped over and the back exposure process must be carried out in the same way. This increases the complexity and time cost of production and affects the yield of the final product.
[0027] To address the aforementioned problems, this invention provides a printing platform mechanism 100 and a laser printing device 10, which can simultaneously expose the front and back sides of the battery cell 20, thereby improving the problems of increased production complexity, increased time costs, and reduced yield of the final product.
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0031] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are 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, and therefore should not be construed as a limitation of this utility model.
[0032] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0033] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0034] The following detailed description, through embodiments and in conjunction with the accompanying drawings, outlines the overall structure, working principle, and technical effects of the printing platform mechanism 100 and the laser printing device 10 provided by this utility model. Please refer to... Figure 1 , Figure 1 This is a schematic diagram of the printing platform mechanism 100 provided in this embodiment. The present invention provides a printing platform mechanism 100, which includes a support platform 110, a first mask 130, a second mask 150, and a reflective component 170.
[0035] The stage 110 is used to hold the solar cell 20. The solar cell 20 includes a first side and a second side disposed opposite to each other. A first photomask 130 is disposed on the first side of the solar cell 20 and is used to transmit laser light to expose the first side. Correspondingly, a second photomask 150 is disposed on the second side of the solar cell 20 and is used to transmit laser light to expose the second side.
[0036] When the laser beam illuminates the first photomask 130, it passes through the light-transmitting area on the photomask and reaches the first side of the solar cell 20, thereby performing precise exposure processing on that side. Similarly, the second photomask 150 plays a similar role, controlling the laser path that illuminates the second side of the solar cell 20 from another direction, so that the laser can expose the second side of the solar cell 20 in a preset manner.
[0037] It should be noted that the laser on the second side does not originate directly from the laser source 30, but rather arrives after being reflected by the reflective component 170. Specifically, the reflective component 170 is located below the support stage 110 and is used to receive and reflect the laser to the second side. In practical applications, this means that some of the laser light changes its propagation direction after encountering the reflective component 170 and is reflected back to the second side of the solar cell 20, thus simultaneously exposing the second side of the solar cell 20.
[0038] By employing the above-described configuration, simultaneous exposure of both sides of the solar cell 20 is achieved, avoiding the step required in traditional methods to reverse the solar cell 20 to process each side separately. This simplifies the process flow, shortens the overall exposure time, and improves production efficiency. Furthermore, simultaneous exposure on both sides ensures consistent exposure conditions, reducing errors caused by flipping and repositioning, and improving the consistency and uniformity of exposure.
[0039] In some embodiments, the first side specifically refers to the front side of the battery cell 20, and the corresponding first mask 130 is located above the battery cell 20; the second side specifically refers to the back side of the battery cell 20, and the corresponding second mask 150 is located below the battery cell 20.
[0040] Based on the above, the support stage 110 is provided with a bracket and a sandwich layer. The first mask 130 is located on the bracket, and the second mask 150 is located in the sandwich layer. It is easy to understand that by fixing the first mask 130 to the bracket and the second mask 150 to the sandwich layer, the relative position between the mask and the solar cell 20 can be kept stable, thereby improving the accuracy of laser exposure.
[0041] Considering that the reflected laser needs to pass through the support stage 110 below the interlayer before passing through the second mask 150 to expose the second side of the solar cell 20, the support stage 110 and the second mask 150 are made of the same glass material to minimize the refraction and reflection loss of the laser between different material interfaces and ensure that the laser can be transmitted to the second side efficiently.
[0042] To significantly improve the processing efficiency of the printing platform mechanism 100 per unit time, the stage 110 is used to hold at least two solar cells 20. Correspondingly, the reflective component 170 corresponds one-to-one with the solar cell 20, i.e., the position and quantity correspond one-to-one, to ensure that each solar cell 20 can be double-sided exposed simultaneously. For example, two solar cells 20 can be placed on the left and right sides of the stage 110 respectively.
[0043] In this embodiment, the same first mask 130 and second mask 150 can be used to expose at least two solar cells 20 simultaneously. In other embodiments, the first mask 130 and the second mask 150 can also be configured in a one-to-one correspondence with the solar cells 20.
[0044] Please refer to it again. Figure 1 The reflective assembly 170 will now be described in detail. In this embodiment, the reflective assembly 170 includes a first reflector 171 and a second reflector 173. The first reflector 171 receives and reflects laser light to the second reflector 173, and the second reflector 173 receives and reflects laser light to the second side. It is easy to understand that the path of the laser can be precisely controlled by the reflection of the two reflectors, ensuring that the laser accurately illuminates the second side of the solar cell 20.
[0045] Furthermore, the first reflector 171 and the second reflector 173 are perpendicular to each other. In practical applications, the vertically incident laser, after being reflected by the first reflector 171, is horizontally incident on the second reflector 173 and then vertically reflected out by the second reflector 173, exposing the second surface of the solar cell 20. It is easy to understand that the two 90-degree reflections reduce laser path offset caused by angular errors, improving exposure accuracy. Optionally, the angle between the first reflector 171 and the second reflector 173 and the horizontal plane is both 45°.
[0046] Please see Figure 2 This application also provides a laser printing apparatus 10, which includes the printing platform mechanism 100 described in the foregoing embodiments. Based on this, the laser printing apparatus 10 can simultaneously expose the front and back sides of the battery cell 20, improving production efficiency and product yield. Further details will not be elaborated here.
[0047] In addition, the laser printing apparatus 10 also includes a laser source 30. The laser source 30 is used to emit laser light to simultaneously expose the first and second sides of the solar cell 20. Accordingly, to ensure that the laser can accurately irradiate the solar cell 20, the printing platform mechanism 100 has a printing station corresponding to the laser source 30.
[0048] To achieve continuous production and improve overall production efficiency, the laser printing device 10 also includes a feeding mechanism 40 and an unloading mechanism 50 located on both sides of the laser source 30. The feeding mechanism 40 is used to place the battery cells 20, and the unloading mechanism 50 is used to pick up the battery cells 20. Similarly, the printing platform mechanism 100 has a feeding station corresponding to the feeding mechanism 40 and an unloading station corresponding to the unloading mechanism 50.
[0049] Considering that the suction cups can accurately adsorb and release the battery cells 20 and keep the battery cells 20 stable during movement, reducing damage caused by vibration or collision, the feeding mechanism 40 includes a feeding suction cup 41 corresponding to each battery cell 20, and the discharging mechanism 50 includes a discharging suction cup 51 corresponding to each battery cell 20.
[0050] In addition, the laser printing device 10 also includes a conveyor track 60. The printing platform mechanism 100 can selectively move between the feeding station, the printing station, and the feeding station via the conveyor track 60. Based on this, on the one hand, the printing platform mechanism 100 can move quickly between different stations, reducing changeover time; on the other hand, it can support continuous production processes, with each step from feeding and printing to unloading seamlessly connected.
[0051] In summary, this utility model provides a printing platform mechanism 100 and a laser printing device 10. The printing platform mechanism 100 includes a support stage 110, a first mask 130, a second mask 150, and a reflective component 170. The support stage 110 is used to place a solar cell 20. The solar cell 20 includes a first side and a second side disposed opposite to each other. The first mask 130 is disposed on the first side of the solar cell 20 and is used to transmit laser light to expose the first side. Correspondingly, the second mask 150 is disposed on the second side of the solar cell 20 and is used to transmit laser light to expose the second side. The reflective component 170 is located below the support stage 110 and is used to receive and reflect laser light to the second side. Through the above arrangement, simultaneous exposure of both sides of the solar cell 20 is achieved, avoiding the step of reversing the solar cell 20 to process both sides separately in traditional methods, simplifying the process flow, shortening the overall exposure time, and improving production efficiency. In addition, simultaneous exposure of both sides ensures consistent exposure conditions on both sides, reduces errors caused by flipping and repositioning, and improves the consistency and uniformity of exposure.
[0052] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A printing platform mechanism, characterized in that, include: A support platform for placing battery cells, the battery cells including a first side and a second side disposed opposite to each other; A first mask is disposed on the first side and is used to transmit a laser beam to expose the first side. A second mask is disposed on the second side and is used to transmit the laser to expose the second side; A reflective component, located below the support platform, is used to receive and reflect the laser to the second side.
2. The printing platform mechanism according to claim 1, characterized in that, The reflective assembly includes a first reflector and a second reflector, wherein the first reflector is used to receive and reflect the laser to the second reflector, and the second reflector is used to receive and reflect the laser to the second side.
3. The printing platform mechanism according to claim 2, characterized in that, The first reflector and the second reflector are perpendicular to each other.
4. The printing platform mechanism according to claim 1, characterized in that, The support platform is provided with a bracket and a sandwich layer, the first mask is located on the bracket, and the second mask is located in the sandwich layer.
5. The printing platform mechanism according to claim 4, characterized in that, The support platform and the second mask are made of the same type of glass.
6. The printing platform mechanism according to any one of claims 1 to 5, characterized in that, The support platform is used to place at least two of the battery cells, and the reflective component corresponds to each of the battery cells.
7. A laser printing device, characterized in that, It includes a laser source and a printing platform mechanism as described in any one of claims 1 to 6; wherein the laser source is used to emit the laser, and the printing platform mechanism has a printing station corresponding to the laser source.
8. The laser printing apparatus according to claim 7, characterized in that, The laser printing device further includes a feeding mechanism and a discharging mechanism located on both sides of the laser source; wherein, the feeding mechanism is used to place the battery cell, the discharging mechanism is used to pick up the battery cell, and the printing platform mechanism has a feeding station corresponding to the feeding mechanism and a discharging station corresponding to the discharging mechanism.
9. The laser printing apparatus according to claim 8, characterized in that, The feeding mechanism includes a feeding suction cup corresponding to each of the battery cells, and the discharging mechanism includes a discharging suction cup corresponding to each of the battery cells.
10. The laser printing apparatus according to claim 8, characterized in that, The laser printing device also includes a conveyor track, through which the printing platform mechanism can selectively move between the feeding station, the printing station, and the feeding station.