Printing device and printing system

Abstract

The utility model discloses a printing device and a printing system, wherein the printing device comprises: a printing platform, the printing platform is used to place a battery cell; a laser emitting component, the angle between the light emitting direction of the laser emitting component and the plane where the printing platform is located is not 90 degrees; a light splitting component, the light emitted by the laser emitting component is irradiated on the light splitting component, and the light splitting component divides the incident light irradiated thereon into reflected light and refracted light; and a reflection component, the reflected light and the refracted light are reflected by the reflection component and then vertically projected toward the printing platform. At least two battery cells can be exposed each time, thereby significantly improving the printing efficiency and making the printing process better adapt to the gradually increasing workshop capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a printing device and a printing system. Background Art

[0002] When preparing copper grid lines on solar cells, the current practice is to first selectively expose the copper seed layer on the surface of the silicon wafer, remove the exposed copper seed layer after development, expose the copper film (copper seed layer) on the surface of the silicon wafer, and then perform electroplating to grow a layer of copper grid lines on the exposed copper film. During the printing process of existing printers, one solar cell is placed on the printing platform at a time, and the printing platform can only complete the exposure of one solar cell after completing one reciprocating movement. The repeated movement of the printing platform wastes time, and the printing efficiency is low, which cannot match the gradually increasing workshop production capacity.

[0003] Therefore, the current printing devices and printing systems still need to be improved. Utility Model Content

[0004] The present invention aims to alleviate or solve at least one of the above-mentioned problems to at least a certain extent.

[0005] In one aspect of the utility model, the utility model proposes a printing device. In some embodiments of the utility model, the printing device includes: a printing platform, the printing platform is used to place battery cells; a laser emitting component, the angle between the light emitting direction of the laser emitting component and the plane where the printing platform is located is not 90 degrees; a spectroscopic component, the light emitted by the laser emitting component is irradiated on the spectroscopic component, and the spectroscopic component divides the incident light irradiated thereon into reflected light and refracted light; a reflecting component, the reflected light and the refracted light are reflected by the reflecting component and then vertically emitted to the printing platform. As a result, the light emitted by the laser emitting component can expose at least two battery cells each time, thereby significantly improving the printing efficiency, allowing the printing process to better adapt to the gradually increasing workshop capacity, thereby improving the production efficiency of battery cells.

[0006] In some embodiments of the utility model, the reflection component includes: a first reflection component, the first reflection component includes a first reflection plate and a second reflection plate, and the reflected light is reflected by the first reflection plate and the second reflection plate in sequence, and then vertically emitted to the printing platform; a second reflection component, the second reflection component includes a third reflection plate and a fourth reflection plate, and the refracted light is reflected by the third reflection plate and the fourth reflection plate in sequence, and then vertically emitted to the printing platform.

[0007] In some embodiments of the utility model, the spectroscopic component is placed horizontally, the incident angle of the incident light emitted by the laser emitting component is θ, the first reflector is placed horizontally, the angle between the second reflector and the vertical direction is β, and β and θ satisfy the following relationship: θ=2β; the third reflector is placed vertically, the angle between the fourth reflector and the vertical direction is α, and α and θ satisfy the following relationship: θ=2α.

[0008] In some embodiments of the utility model, the first reflector, the second reflector, the third reflector and the fourth reflector each independently include a substrate and a metal film coating located on the surface of the substrate, and during printing, the reflected light or the refracted light is irradiated on the metal film coating. Thus, each reflector has a high reflectivity, and when light is irradiated on its surface, more light will be reflected onto the next level reflector or onto the printing platform, which is conducive to improving the utilization rate of light.

[0009] In some embodiments of the present invention, the spacing between adjacent solar cells on the printing platform is ≥5 cm, thereby effectively avoiding the adverse effects of laser interference on the printing effect.

[0010] In some embodiments of the present invention, adjacent battery cells are separated by light shielding plates, thereby better avoiding mutual interference between the two laser beams, thereby improving the exposure effect of the printing device on the battery cells.

[0011] In some embodiments of the utility model, the printing device further comprises a moving motor, which is used to move the position of the printing platform. The moving motor can move the position of the printing platform as needed, so that the printing platform is located at a material receiving position, a printing position or a material discharging position.

[0012] In some embodiments of the utility model, the printing device further comprises a camera, and the camera is used to take pictures to confirm whether the placement position of the battery cell is appropriate. By taking pictures of the battery cell with the camera, it can be determined whether the placement position of the battery cell is appropriate. If not, the position of the battery cell can be adjusted according to the picture taking result so that the battery cell is in a suitable position for easy printing.

[0013] In another aspect of the present invention, the present invention proposes a printing system. In some embodiments of the present invention, the printing system includes a feed assembly, a discharge assembly, and the aforementioned printing device, wherein the feed assembly is used to place the battery sheet to be processed on the printing platform of the printing device, and the discharge assembly is used to remove the battery sheet processed by laser printing from the printing platform of the printing device. Therefore, the printing system has all the features and advantages of the aforementioned printing device, which will not be described in detail here.

[0014] In some embodiments of the present invention, the feed assembly includes a feed suction cup, and the discharge assembly includes a discharge suction cup, so that the battery sheet can be sucked and moved by the feed suction cup or the discharge suction cup.

[0015] In some embodiments of the utility model, the printing system further includes a feed track and a discharge track, wherein the feed suction cup absorbs and transfers the battery cell on the feed track to the printing platform, and the discharge suction cup absorbs and transfers the battery cell on the printing platform to the discharge track. The feed track can transport the battery cell processed by the previous process to the printing process, and the feed suction cup absorbs the battery cell and transfers it to the printing platform, and the discharge suction cup absorbs the battery cell processed by the printing and transfers the battery cell to the discharge track, and the discharge track can transfer the battery cell to the collection device or the next process.

[0016] In some embodiments of the utility model, the feed assembly further includes a first motor, which drives the feed suction cup to move; the discharge assembly further includes a second motor, which drives the discharge suction cup to move. This is beneficial to improving the overall performance of the printing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of the structure of a printing device according to an embodiment of the utility model is shown;

[0019] Figure 2 A partial structural schematic diagram of a printing device according to an embodiment of the utility model is shown;

[0020] Figure 3 It shows a schematic diagram of the structure of a battery sheet on a printing platform according to an embodiment of the utility model;

[0021] Figure 4 A schematic structural diagram of a printing system according to an embodiment of the utility model is shown.

[0022] Description of reference numerals:

[0023] 1: battery cell; 2: mask; 3: incident light; 3': reflected light; 3": refracted light; 11: printing platform; 12: laser emission component; 13: spectrometer component; 14: first reflection component; 14-1: first reflection plate; 14-2: second reflection plate; 15: second reflection component; 15-1: third reflection plate; 15-2: fourth reflection plate; 16: moving motor; 20: feeding component; 21: feeding suction cup; 22: first motor; 30: discharging component; 31: discharging suction cup; 32: second motor; 40: feeding track; 50: discharging track. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In one aspect of the present invention, the present invention provides a printing device. In some embodiments of the present invention, reference is made to Figure 1 The printing device may include a printing platform 11, a laser emitting component 12, a spectroscopic component 13 and a reflective component. The printing platform 11 may be used to place a cell 1, and the angle between the light emitting direction of the laser emitting component 12 (the propagation direction of the incident light 3) and the plane where the printing platform 11 is located is not 90 degrees; the light emitted by the laser emitting component 12 is irradiated on the spectroscopic component 13, and the spectroscopic component 13 divides the incident light 3 irradiated thereon into a reflected light 3' and a refracted light 3", and the reflected light 3' and the refracted light 3" are reflected by the reflective component and vertically projected toward the printing platform 11 to print different cells. Thus, the printing device can print at least two cells at the same time, thereby significantly improving the efficiency of the printing process and increasing the production capacity by at least one time.

[0026] In some specific embodiments of the present invention, reference is made to Figure 1 The reflective component may include a first reflective component 14 and a second reflective component 15. The first reflective component 14 includes a first reflective plate 14-1 and a second reflective plate 14-2. The reflected light 3' is reflected by the first reflective plate 14-1 and the second reflective plate 14-2 in sequence, and then vertically projects toward the printing platform 11 to expose a battery cell 1 on the printing platform 11; the second reflective component 15 includes a third reflective plate 15-1 and a fourth reflective plate 15-2. The refracted light 3" is reflected by the third reflective plate 15-1 and the fourth reflective plate 15-2 in sequence, and then vertically projects toward the printing platform 11 to expose another battery cell 1 on the printing platform 11.

[0027] In some embodiments of the present invention, reference Figure 1 and Figure 2 , the angle between the light emitting direction of the laser emitting component 12 and the plane where the printing platform 11 is located is not 90 degrees, that is, the angle between the propagation direction of the incident light 3 and the plane where the printing platform is located is not 90 degrees, and the propagation direction of the incident light 3 and the plane where the printing platform 11 is located are not perpendicular to each other.

[0028] In some embodiments of the present invention, reference Figure 1 and Figure 2 , the light emitted by the laser emitting component 12 is irradiated on the spectroscopic component 13, and the spectroscopic component 13 divides the incident light 3 irradiated thereon into a reflected light 3' and a refracted light 3". In some embodiments of the utility model, the spectroscopic component 13 can be made of glass. By performing certain treatments on the glass, a spectroscopic component with better optical effects can be obtained. The spectroscopic component can divide the incident light 3 into a reflected light 3' and a refracted light 3" with little difference in light intensity, so that the laser energy of the reflected light 3' and the refracted light 3" are relatively balanced, and the light energy irradiated on the two battery cells is roughly equal. In other embodiments of the utility model, the printing laser energy can be coordinated with the printing gap (the spacing between the mask plate 2 and the battery cell 1). If the laser energy of the reflected light 3' and the refracted light 3" separated by the spectroscopic component 13 is greatly different, it can be compensated by adjusting the height of the mask plate 2 above the two battery cells, so that the laser energy irradiated on the two battery cells is roughly the same. It should be noted that during the printing process, the mask 2 is located above the cell to block part of the light. The portion of the cell 1 not blocked by the mask 2 will be irradiated by the laser. Combined with the subsequent development steps, the patterning of the copper seed layer in the cell can be achieved.

[0029] In some embodiments of the present invention, the first reflector 14-1, the second reflector 14-2, the third reflector 15-1 and the fourth reflector 15-2 may each independently include a substrate and a metal film coating located on the surface of the substrate. During the printing process, the reflected light 3' or the refracted light 3" is irradiated on the metal film coating, so that the light irradiated on each reflector is reflected by the reflector to the next-level reflector or the printing platform. In some specific embodiments of the present invention, the substrate of each reflector may be a glass substrate, and the metal film coating on the surface of the substrate may be a silver coating. The silver coating has a high reflectivity, which is conducive to improving the utilization rate of light.

[0030] In some embodiments of the present invention, reference Figure 2The spacing L between adjacent battery cells 1 on the printing platform 11 can be greater than or equal to 5 cm. For example, the spacing L between adjacent battery cells 1 on the printing platform 11 can be 5 cm, 8 cm, 10 cm, 12 cm, 15 cm, etc. Therefore, there is a certain spacing between adjacent battery cells, and the two beams of light separated by the laser emitted by the same laser emitting component have less interference with each other, which is conducive to improving the printing effect.

[0031] In some embodiments of the utility model, adjacent battery cells 1 can be separated by a shading baffle. Thus, even when the spacing between adjacent battery cells is small, the shading baffle can prevent the two beams of light from interfering with each other, thereby avoiding the adverse effects of mutual interference of light on the printing effect.

[0032] In some embodiments of the present invention, reference Figure 1 The printing device may further include a moving motor 16, which may be used to move the position of the printing platform 11. Thus, the moving motor 16 may move the printing platform to a material receiving position, a printing position or a material discharging position according to actual operation needs.

[0033] In some embodiments of the utility model, the printing device may further include a camera, which is used to confirm whether the placement position of the battery cell 1 is appropriate by taking pictures, and to judge whether the placement position of the battery cell 1 is appropriate by the taken pictures. If the battery cell 1 is not placed in a suitable position, it can be adjusted accordingly to place the battery cell 1 in a more suitable position, and then expose the battery cell, thereby improving the printing effect.

[0034] The following is a description of the principle that the printing device proposed by the present invention can improve printing efficiency by combining some specific embodiments of the present invention. Figure 1 and Figure 2 , the first reflective plate 14-1 can be placed horizontally, and the plane where the first reflective plate 14-1 is located and the plane where the printing platform 11 is located are both horizontal planes; the third reflective plate 15-1 can be placed vertically, that is, the plane where the third reflective plate 15-1 is located and the plane where the printing platform 11 is located are perpendicular to each other. Figure 2, the spectroscopic component 13 can be placed horizontally, that is, the plane where the spectroscopic component 13 is located is also a horizontal plane. When the incident light 3 is irradiated on the spectroscopic component 13, the spectroscopic component 13 divides the incident light 3 into a reflected light 3' and a refracted light 3". The reflected light 3' is the light formed after the incident light 3 is reflected by the surface of the spectroscopic component 13 away from the printing platform 11. The refracted light 3" is the light emitted from the surface of the spectroscopic component 13 close to the printing platform 11 after the incident light 3 is refracted twice by the spectroscopic component. The propagation direction of the refracted light 3" is the same as the propagation direction of the incident light 3, that is, the refracted light 3" is parallel to the incident light 3, and the propagation direction of the reflected light 3' is changed. According to the relationship between the incident light and the reflected light in the process of light propagation, that is, the incident angle is equal to the reflection angle, it can be known that the angle β and θ between the second reflector 14-2 and the vertical direction satisfy the following relationship: 2β=θ; the angle α and θ between the fourth reflector 15-2 and the vertical direction satisfy the following relationship: 2α=θ. Among them, θ is the incident angle of the incident light 3 emitted by the laser emitting component 12, the incident angle θ is twice the angle β between the second reflector 14-2 and the vertical direction, and the incident angle θ is twice the angle α between the fourth reflector 15-2 and the vertical direction.

[0035] In some embodiments of the present invention, the incident angle θ can be 15°-75°. For example, the incident angle θ can be 15°, 30°, 45°, 60°, 75°, etc. The incident angle θ is set within the above range, which is beneficial to the arrangement of each reflective plate and to avoid mutual interference between reflected light and refracted light.

[0036] In some embodiments of the present invention, reference Figure 1 and Figure 2 A group of cells 1, that is, two cells 1, can be placed on the printing platform 11. The laser emitting component 12 emits a beam of incident light 3, which is split by the beam splitting component 13 to form a beam of reflected light 3' and a beam of refracted light 3", and the reflected light 3' is reflected by the first reflector 14-1 and the second reflector 14-2 in turn, and then vertically irradiates a cell 1 on the printing platform 11, and the refracted light 3" is reflected by the third reflector 15-1 and the fourth reflector 15-2 in turn, and then vertically irradiates another cell 1 on the printing platform 11.

[0037] In other embodiments of the present invention, reference Figure 3 , multiple groups of battery cells 1 can be placed on the printing platform 11, Figure 3Each dotted box is a corresponding group of cells 1. In some specific embodiments of the utility model, the purpose of printing on multiple groups of cells at the same time can be achieved by setting multiple groups of laser emitting components, light splitting components, first reflecting components and second reflecting components, that is, each group of cells is correspondingly provided with a group of laser emitting components, light splitting components, first reflecting components and second reflecting components. In other specific embodiments of the utility model, the number of laser emitting components, light splitting components, first reflecting components and / or second reflecting components can also be set according to actual conditions. For example, the laser emitting component can have multiple emitting ends arranged at intervals, so as to emit multiple beams of incident light, respectively corresponding to multiple groups of cells, and the same laser emitting component can be used to correspond to multiple groups of cells; or, the light splitting component can simultaneously perform light splitting processing on multiple beams of incident light, and the number of light splitting components can be reduced accordingly. Similarly, if the first reflecting component or the second reflecting component can respectively reflect different reflected light or refracted light, and the light does not interfere with each other, the number of the first reflecting component and / or the second reflecting component can also be reduced accordingly.

[0038] In some specific embodiments of the present invention, when multiple groups of battery cells 1 are placed on the printing platform 11, a light shielding baffle can be used to separate adjacent battery cells 1 to avoid adverse effects caused by interference between multiple beams of light.

[0039] In general, the printing device proposed by the utility model has the following advantages: utilizing the principle of refraction and reflection of light to split an incident laser beam into two through a beam splitting component, and changing the propagation direction of the light through multiple reflections of the reflective plate, and finally irradiating the light vertically downward onto the battery cell on the printing platform to expose the battery cell. At least two battery cells can be exposed at the same time, which can significantly improve the printing efficiency and match the printing process with the gradually increasing workshop production capacity.

[0040] In another aspect of the present invention, the present invention provides a printing system. In some embodiments of the present invention, reference is made to Figure 4 The printing system may include a feed assembly 20, a discharge assembly 30 and the aforementioned printing device, wherein the feed assembly 20 is used to place the battery cell 1 to be processed on the printing platform 11 of the printing device, and the discharge assembly 30 is used to remove the battery cell 1 processed by laser printing from the printing platform 11 of the printing device. Thus, the printing system can be operated continuously with the previous process and the next process of the workshop, the feed assembly can transfer the battery cell processed by the previous process to the printing platform, and the discharge assembly can remove the battery cell from the printing platform and transfer it to the next process.

[0041] In some embodiments of the present invention, reference Figure 4The feed assembly 20 may include a feed suction cup 21, and the discharge assembly 30 may include a discharge suction cup 31. The feed assembly 20 and the discharge assembly 30 may use the suction cups to absorb and transfer the battery cells.

[0042] In some embodiments of the present invention, reference Figure 4 The printing system may further include a feed track 40 and a discharge track 50. In some embodiments, the feed track 40 may be connected to the previous process. After the previous process is completed, the mobile motor 16 moves the printing platform 11 to the material receiving position, and the feed suction cup 21 may absorb and transfer the battery cell 1 on the feed track 40 to the printing platform 11. After that, the mobile motor 16 moves the printing platform 11 to the printing position, and the discharge track 50 may be connected to the next process. After the printing process is completed, the mobile motor 16 moves the printing platform 11 to the discharge position, and the discharge suction cup 31 may absorb and transfer the battery cell 1 on the printing platform 11 to the discharge track 50, and the discharge track 50 transfers the battery cell 1 to the next process.

[0043] In some embodiments of the present invention, reference Figure 4 The feeding assembly 20 may further include a first motor 22, which may drive the feeding suction cup 21 to move; the discharging assembly 30 may further include a second motor 32, which may drive the discharging suction cup 31 to move. Thus, the suction cup may be driven by the motor to suck and move the battery cell.

[0044] In the description of the present invention, the terms "horizontal", "vertical", "perpendicular" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory. In addition, it should be noted that in this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A printing device, characterized in that: include: A printing platform, the printing platform is used to place the battery sheet; A laser emitting assembly, wherein the angle between the light emitting direction of the laser emitting assembly and the plane where the printing platform is located is not 90 degrees; A light splitting component, on which the light emitted by the laser emitting component is irradiated, and the light splitting component splits the incident light irradiated thereon into reflected light and refracted light; A reflective component, wherein the reflected light and the refracted light are reflected by the reflective component and then vertically directed toward the printing platform.

2. The printing device according to claim 1, characterized in that: The reflective component comprises: A first reflective component, wherein the first reflective component comprises a first reflective plate and a second reflective plate, and the reflected light is reflected by the first reflective plate and the second reflective plate in sequence and then vertically projects toward the printing platform; The second reflective component includes a third reflective plate and a fourth reflective plate. The refracted light is reflected by the third reflective plate and the fourth reflective plate in sequence and then vertically directed toward the printing platform.

3. The printing device according to claim 2, characterized in that: The light splitting component is placed horizontally, and the incident angle of the incident light emitted by the laser emitting component is θ. The first reflector is placed horizontally, the angle between the second reflector and the vertical direction is β, and β and θ satisfy the following relationship: θ=2β; The third reflector is placed vertically, and the angle between the fourth reflector and the vertical direction is α, and α and θ satisfy the following relationship: θ=2α.

4. The printing device according to claim 2, characterized in that: The first reflector, the second reflector, the third reflector and the fourth reflector each independently include a substrate and a metal film coating located on the surface of the substrate. During the printing process, the reflected light or the refracted light irradiates the metal film coating.

5. The printing device according to any one of claims 1 to 4, characterized in that: The spacing between adjacent battery cells on the printing platform is ≥5 cm.

6. The printing device according to any one of claims 1 to 4, characterized in that: Adjacent cells are separated by light shielding panels.

7. The printing device according to any one of claims 1 to 4, characterized in that: The printing device further comprises a moving motor, and the moving motor is used to move the position of the printing platform; And / or, the printing device further comprises a camera, and the camera is used to take pictures to confirm whether the placement position of the battery cell is appropriate.

8. A printing system, characterized in that: The invention comprises a feeding assembly, a discharging assembly and a printing device as described in any one of claims 1 to 7, wherein the feeding assembly is used to place the battery cells to be processed on the printing platform of the printing device, and the discharging assembly is used to remove the battery cells processed by laser printing from the printing platform of the printing device.

9. The printing system according to claim 8, characterized in that: The feeding assembly comprises a feeding suction cup, and the discharging assembly comprises a discharging suction cup.

10. The printing system according to claim 9, characterized in that: The printing system further comprises a feeding track and a discharging track, wherein the feeding suction cup absorbs and transfers the battery cells on the feeding track to the printing platform, and the discharging suction cup absorbs and transfers the battery cells on the printing platform to the discharging track; And / or, the feeding assembly further includes a first motor, which drives the feeding suction cup to move; the discharging assembly further includes a second motor, which drives the discharging suction cup to move.

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