Battery piece printing device and battery piece assembling production line

Abstract

The invention discloses a battery piece printing device and a battery assembly production line, the battery piece printing device comprises a support, a carrier plate, a spraying assembly and a driving assembly, the carrier plate is suitable for bearing a battery piece, and the carrier plate is arranged on the support. The spraying assembly comprises a fixing block and a plurality of high-pressure guns, the high-pressure guns are fixed to the fixing block, the high-pressure guns are suitable for spraying silver paste to the surface of the battery piece, the driving assembly is installed on the support, and the driving assembly is in transmission connection with the fixing block so as to drive the high-pressure guns to move along a set track. The battery piece printing device has the advantages of being low in battery piece printing cost and high in printing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic cells, and in particular to a cell printing device and a cell assembly production line. Background Art

[0002] The grid lines of solar cells are an important part of the metal electrodes of solar cells. Their main function is to collect and transmit photogenerated carriers, thereby realizing the conversion of solar energy into electricity. The photovoltaic cell grid line printing device in the related art uses a scraper to squeeze the printing ink, and with the help of the scraper surface and the mesh of the screen, the printing ink is in a reverse rolling state. When the ink reaches the electrode pattern area of ​​the screen that is not blocked by the latex film, it penetrates the mesh downward to contact the printing substrate (silicon wafer). The scraper continues to move forward, and due to the tension of the screen and the distance from the plate, the ink is separated from the screen and attached to the printing substrate, achieving the purpose of printing. However, as a high-cost consumable, the screen needs to spend a lot of time to replace it during the production process of photovoltaic cells, and thus there are defects such as high printing cost and low printing efficiency of the cell. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a cell printing device, which has the advantages of low printing cost and high printing efficiency for cells.

[0005] An embodiment of the present invention further provides a battery cell assembly production line.

[0006] The battery cell printing device of the embodiment of the present invention includes a bracket, a carrier, a spraying assembly and a driving assembly. The carrier is suitable for supporting the battery cell and is arranged on the bracket; the spraying assembly includes a fixed block and a plurality of high-voltage guns, and the plurality of high-voltage guns are fixed on the fixed block, and the high-voltage guns are suitable for spraying silver paste on the surface of the battery cell; the driving assembly is installed on the bracket, and the driving assembly is transmission-connected to the fixed block so as to drive the high-voltage gun to move along a set trajectory.

[0007] According to the cell printing device of the embodiment of the present invention, the carrier plate is suitable for supporting the cell to fix the cell at the set position of the bracket. At this time, the high-voltage gun, driven by the driving component, can press against the surface of the cell to spray silver paste on the surface of the cell to complete the printing of the battery grid line. During the whole process, it is only necessary to continuously pour the silver paste into the high-voltage gun to complete the continuous printing of different cells, and no more expensive screens are needed, thereby effectively reducing the printing cost and efficiency of the cell.

[0008] In some embodiments, the bracket is provided with a parking platform, and the carrier plate is movably arranged on the parking platform;

[0009] The cell printing device further comprises at least two positioning cylinders, which are installed above the parking platform and can clamp the carrier plate at a set position of the parking platform.

[0010] In some embodiments, a positioning groove is provided on the upper surface of the carrier board, the shape of the bottom surface of the positioning groove matches the shape of the lower surface of the battery cell, the battery cell fits in the positioning groove, and the upper edge of the side surface of the positioning groove is chamfered.

[0011] In some embodiments, the parking platform is provided with a first through hole penetrating the parking platform along the thickness direction of the parking platform, and the bottom surface of the positioning groove is provided with a second through hole penetrating the carrier plate along the thickness direction of the carrier plate;

[0012] There are two fixed blocks, which are respectively located above and below the carrier. Multiple high-pressure guns are installed on each of the fixed blocks. The multiple high-pressure guns located below the carrier are suitable for spraying silver paste onto the lower surface of the carrier through the first through hole and the second through hole.

[0013] In some embodiments, the cell printing device further includes a CCD camera, which is mounted on the bracket and located above the parking platform.

[0014] In some embodiments, the high-pressure gun includes a gun body, a gun head and a ball, one end of the gun head is connected to the gun body and surrounds the molding injection cavity, the other end of the gun head is provided with a mounting hole connected to the injection cavity, and the ball rollingly fits in the mounting hole.

[0015] In some embodiments, the cell printing device further includes a centrifuge and a high-pressure air pipe, and the centrifuge is connected to the gun body through the high-pressure air pipe.

[0016] In some embodiments, the driving assembly includes two three-degree-of-freedom manipulators, and the driving ends of the two three-degree-of-freedom manipulators are respectively transmission-connected to two fixed blocks.

[0017] A cell assembly production line according to an embodiment of the present invention includes a cell printing device as described in any of the above embodiments.

[0018] The technical advantages of the cell assembly production line according to the embodiment of the present invention are the same as the technical advantages of the cell printing device in the above-mentioned embodiment, which will not be described in detail here.

[0019] In some embodiments, the battery cell assembly production line also includes a conveyor line and a transfer mechanism, the conveyor line is used to convey the battery cells, and the bracket is installed on the side of the conveyor line; the transfer mechanism is installed on the side of the conveyor line, and a suction cup is installed on the driving end of the transfer mechanism, and the transfer mechanism is suitable for transferring the battery cells between the conveyor line and the carrier through the suction cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a cross-sectional view of a cell printing device according to an embodiment of the present invention.

[0021] Figure 2 Schematic diagram of a spraying assembly in a cell printing device according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] 1. Bracket; 11. Parking platform; 111. First through hole; 2. Carrier plate; 21. Positioning groove; 22. Second through hole; 3. High-pressure gun; 31. Gun body; 32. Gun head; 33. Ball bearing; 4. Fixing block; 5. Centrifuge; 6. High-pressure air pipe. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0025] Combine the following Figure 1 and Figure 2 A cell printing device according to an embodiment of the present invention is described.

[0026] The cell printing device of the embodiment of the present invention comprises a bracket 1, a carrier plate 2, a spraying assembly and a driving assembly. The carrier plate 2 is suitable for supporting the cell, and the carrier plate 2 is arranged on the bracket 1. The spraying assembly comprises a fixed block 4 and a plurality of high-voltage guns 3, and the plurality of high-voltage guns 3 are fixed on the fixed block 4, and the high-voltage guns 3 are suitable for spraying silver paste on the surface of the cell. The driving assembly is mounted on the bracket 1, and the driving assembly is transmission-connected with the fixed block 4 so as to drive the high-voltage guns 3 to move along a set trajectory.

[0027] According to the cell printing device of the embodiment of the present invention, the carrier plate 2 is suitable for supporting the cell to fix the cell at the set position of the bracket 1. At this time, the high-voltage gun 3, driven by the driving component, can be pressed against the surface of the cell to spray the silver paste on the surface of the cell to complete the printing of the battery grid line. During the whole process, it is only necessary to continuously pour the silver paste into the high-voltage gun 3 to complete the continuous printing of different cells, and no more expensive screens are needed, thereby effectively reducing the printing cost and efficiency of the cell.

[0028] It should be noted that, taking the multiple high-voltage guns 3 for printing the grid lines on the upper surface of the battery cell as an example, the multiple high-voltage guns 3 are arranged at equal intervals along a certain direction, and the distance between the spraying points of any two adjacent high-voltage guns 3 is the spacing between the two adjacent grid lines. In addition, the drive component is electrically connected to the PLC, and the drive component drives the high-voltage gun 3 to move along the set trajectory under the control of the PLC.

[0029] In some embodiments, Figure 1 As shown, a parking platform 11 is provided on the bracket 1, and the carrier 2 is movably arranged on the parking platform 11. The cell printing device also includes at least two positioning cylinders (not shown in the figure), which are installed above the parking platform 11 and can clamp the carrier 2 at a set position of the parking platform 11.

[0030] The carrier plate 2 is movable in the horizontal direction relative to the parking platform 11, and the positioning cylinder pushes the carrier plate 2 to move relative to the parking platform 11 in the horizontal direction, so as to position the carrier plate 2 at the set position of the parking platform 11, thereby ensuring that the battery cell thereon is located at the set position of the bracket 1, thereby facilitating the driving component to complete the printing of the grid lines on the battery cell according to the set trajectory under the control of the PLC.

[0031] Specifically, the carrier plate 2 can be a square plate, and the number of positioning cylinders is four and they are arranged at four corners on the outer peripheral side of the carrier plate 2. When the pistons of two adjacent positioning cylinders reach the maximum stroke and the pistons of the other two positioning cylinders reach the minimum stroke, the carrier plate 2 can be positioned at the set position of the parking platform 11.

[0032] In some embodiments, Figure 1 As shown, a positioning groove 21 is provided on the upper surface of the carrier 2, the shape of the bottom surface of the positioning groove 21 matches the shape of the lower surface of the battery cell, the battery cell fits in the positioning groove 21, and the upper edge of the side surface of the positioning groove 21 is chamfered.

[0033] The positioning groove 21 is set so that the battery cell and the carrier board 2 can be relatively fixed in the horizontal direction by placing the battery cell in the positioning groove 21, ensuring that the battery cell is located at the set position of the bracket 1, thereby ensuring the reliable printing of the subsequent grid lines on the battery cell. At the same time, the chamfering of the upper edge of the side of the positioning groove 21 makes the notch of the positioning groove 21 an expanded design, thereby facilitating the reliability of the matching of the battery cell in the positioning groove 21 when the battery cell is transferred to the carrier board 2 by mechanical equipment.

[0034] Specifically, when the carrier plate 2 is a square plate, the positioning groove 21 is a square groove, and the chamfer is a right angle.

[0035] In some embodiments, Figure 1As shown, the parking platform 11 is provided with a first through hole 111 penetrating the parking platform 11 along the thickness direction of the parking platform 11, and the bottom surface of the positioning groove 21 is provided with a second through hole 22 penetrating the carrier board 2 along the thickness direction of the carrier board 2. There are two fixing blocks 4, which are respectively located above and below the carrier board 2, and each fixing block 4 is equipped with a plurality of high-pressure guns 3. The plurality of high-pressure guns 3 located below the carrier board 2 are suitable for spraying silver paste on the lower surface of the carrier board 2 through the first through hole 111 and the second through hole 22.

[0036] The arrangement of the first through hole 111 and the second through hole 22 facilitates the high-voltage gun 3 located below the battery cell to print the grid lines on the lower surface of the battery cell while the high-voltage gun 3 located above the battery cell completes the printing of the grid lines on the upper surface of the battery cell, thereby increasing the printing efficiency of the grid lines on the battery cell.

[0037] Specifically, the number of high-voltage guns 3 located above the battery cell is equal to the number of high-voltage guns 3 located below the battery cell, the cross-sectional area of ​​the first through hole 111 is smaller than the area of ​​the lower surface of the carrier 2, and the cross-sectional area of ​​the second through hole 22 is smaller than the bottom area of ​​the positioning groove 21.

[0038] In some embodiments, the cell printing device further includes a CCD camera, which is mounted on the bracket 1 and located above the parking platform 11 .

[0039] After placing the battery cell at the set position on the carrier 2, the CCD camera photographs the battery cell and determines through image analysis whether the position of the battery cell is at the set position of the bracket 1. The corresponding position adjustment is made through the positioning cylinder, and the positioning of the battery cell by the positioning groove 21 is combined to further ensure the printing accuracy of the grid line on the battery cell.

[0040] In some embodiments, Figure 2 As shown, the high-pressure gun 3 includes a gun body 31, a gun head 32 and a ball 33. One end of the gun head 32 is connected to the gun body 31 and surrounds the molding injection cavity. The other end of the gun head 32 is provided with a mounting hole connected to the injection cavity, and the ball 33 rolls and fits in the mounting hole.

[0041] By rolling the ball 33, the silver paste in the injection cavity can be sprayed onto the surface of the battery cell through the gap between the outer surface of the ball 33 and the inner surface of the mounting hole. At this time, by adjusting the pressure of the injection cavity, the width of the grid line printed on the surface of the battery cell can be adjusted.

[0042] Specifically, the outer contour of the gun body 31 is cylindrical, and the outer contour of the gun head 32 is conical.

[0043] In some embodiments, Figure 2As shown, the cell printing device further includes a centrifuge 5 and a high-pressure air pipe 6 , and the centrifuge 5 is connected to the gun body 31 through the high-pressure air pipe 6 .

[0044] Silver paste is stored in the centrifuge 5 , and the silver paste is in a state of stirring and centrifugal acceleration under the action of the centrifuge 5 , and then the silver paste is passed into the injection cavity through the high-pressure air pipe 6 and sprayed on the surface of the battery cell from the side of the ball 33 at a set pressure.

[0045] Specifically, the high-pressure gas pipe 6 includes a main pipe and multiple branch pipes, the first end of the main pipe is connected to the centrifuge 5, the multiple branch pipes are connected in parallel and the same end is connected to the second end of the main pipe, and the second ends of the multiple branch pipes are respectively connected to the gun bodies 31 of different high-pressure guns 3.

[0046] In some embodiments, the driving assembly includes two three-degree-of-freedom manipulators, and the driving ends of the two three-degree-of-freedom manipulators are respectively connected to the two fixed blocks 4 by transmission.

[0047] Therefore, under the action of the three-degree-of-freedom manipulator, the high-voltage gun 3 has at least two degrees of freedom of movement in the X direction, the Y direction and the Z direction, thereby more reliably realizing the printing of the grid lines on the battery cell.

[0048] A cell assembly production line according to an embodiment of the present invention includes a cell printing device as described in any of the above embodiments.

[0049] The technical advantages of the cell assembly production line according to the embodiment of the present invention are the same as the technical advantages of the cell printing device in the above-mentioned embodiment, which will not be described in detail here.

[0050] In some embodiments, the battery cell assembly production line further includes a conveyor line and a transfer mechanism, the conveyor line is used to convey the battery cells, and the bracket 1 is installed beside the conveyor line. The transfer mechanism is installed beside the conveyor line, and a suction cup is installed at the driving end of the transfer mechanism. The transfer mechanism is suitable for transferring the battery cells between the conveyor line and the carrier 2 through the suction cup.

[0051] The conveyor line is a belt conveyor line, which is used to convey battery cells. When the battery cells are conveyed to the vicinity of the bracket 1, the transfer mechanism uses the suction cup to absorb and fix the battery cells and transfer them to the carrier 2. When the battery cell printing device completes the printing of the grid lines on the battery cells, the transfer mechanism uses the suction cup to absorb and fix the battery cells and transfer them to the conveyor line to facilitate the next step of assembly of the battery cells.

[0052] It should be noted that the transfer mechanism is preferably a three-degree-of-freedom manipulator. When it transfers the battery cells from the conveyor line to the carrier 2, the carrier 2 is not located at the final set position of the parking platform 11. At this time, by driving the positioning cylinder, the piston of the positioning cylinder moves to complete the displacement and tightening of the carrier 2, ensuring that the carrier 2 and the battery cells thereon are located at the set position of the bracket 1.

[0053] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0058] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A cell printing device, characterized in that: include: Bracket; A carrier plate, the carrier plate is suitable for supporting the battery sheet, and the carrier plate is arranged on the bracket; A spraying assembly, the spraying assembly comprising a fixed block and a plurality of high-voltage guns, the plurality of high-voltage guns being fixed on the fixed block, the high-voltage guns being suitable for spraying silver paste on the surface of the battery cell; A driving assembly is installed on the bracket and is transmission-connected to the fixing block so as to drive the high-pressure gun to move along a set trajectory.

2. The cell printing device according to claim 1, characterized in that: The bracket is provided with a parking platform, and the carrier plate can be movably arranged on the parking platform; The cell sheet printing device further comprises at least two positioning cylinders, which are installed above the parking platform and can clamp the carrier plate at a set position of the parking platform.

3. The cell printing device according to claim 2, characterized in that: The upper surface of the carrier is provided with a positioning groove, the shape of the bottom surface of the positioning groove matches the shape of the lower surface of the battery cell, the battery cell fits in the positioning groove, and the upper edge of the side surface of the positioning groove is chamfered.

4. The cell printing device according to claim 2 or 3, characterized in that: The parking platform is provided with a first through hole penetrating the parking platform along the thickness direction of the parking platform, and the bottom surface of the positioning groove is provided with a second through hole penetrating the carrier plate along the thickness direction of the carrier plate; There are two fixed blocks, which are respectively located above and below the carrier. Multiple high-pressure guns are installed on each of the fixed blocks. The multiple high-pressure guns located below the carrier are suitable for spraying silver paste onto the lower surface of the carrier through the first through hole and the second through hole.

5. The cell printing device according to claim 2, characterized in that: The cell sheet printing device further comprises a CCD camera, which is mounted on the bracket and located above the parking platform.

6. The cell printing device according to claim 1, characterized in that: The high-pressure gun comprises a gun body, a gun head and a ball bearing, one end of the gun head is connected to the gun body and surrounds a molding injection cavity, the other end of the gun head is provided with a mounting hole communicating with the injection cavity, and the ball bearing is rollingly fitted in the mounting hole.

7. The cell printing device according to claim 6, characterized in that: The cell sheet printing device further comprises a centrifuge and a high-pressure air pipe, and the centrifuge is connected to the gun body through the high-pressure air pipe.

8. The cell printing device according to claim 2, characterized in that: The driving assembly comprises two three-degree-of-freedom manipulators, and the driving ends of the two three-degree-of-freedom manipulators are respectively transmission-connected to two fixed blocks.

9. A battery cell assembly production line, characterized in that: It comprises a cell printing device according to any one of claims 1-8.

10. The battery cell assembly production line according to claim 9, characterized in that: The battery cell assembly production line also includes: A conveyor line, the conveyor line is used to convey battery cells, and the bracket is installed beside the conveyor line; A transfer mechanism is installed beside the conveyor line, a suction cup is installed at the driving end of the transfer mechanism, and the transfer mechanism is suitable for transferring the battery sheet between the conveyor line and the carrier plate through the suction cup.

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