A battery piece coating apparatus and coating method

Abstract

This invention discloses a battery cell coating equipment and method. The battery cell coating equipment includes coating devices for coating the sides of battery cells and an adhesive tank for holding adhesive solution. The number of coating devices is N, where N ≥ 2 and N is an integer. Each coating device includes an adsorption section for adsorbing battery cells. At least one coating device also includes a rotating section for rotating its adsorption section. The adsorption section is configured to grip battery cells on the adsorption sections of adjacent coating devices. When the coating device is in the coating position, at least one side of the battery cell adsorbed by the adsorption section of the coating device is immersed in the adhesive tank. The coating equipment of this invention uses at least two coating devices arranged side-by-side, allowing one coating device to complete the coating of at least two sides of the battery cell, and then another adjacent coating device to complete the coating of the remaining two sides. This invention achieves batch coating of battery cells, improving efficiency and reducing costs.

Description

Technical Field

[0001] This invention belongs to the field of solar cells, specifically relating to a cell coating device and coating method. Background Technology

[0002] During the manufacturing process of solar cells, the edges of the cells (including the sides, front edges, and back edges) need to be coated for protection. Existing coating or dispensing equipment on the market can only coat the edges of a single cell, and different edges of the cell require separate coating processes, resulting in low production efficiency and high production costs.

[0003] It should be noted that the above description of the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of the present invention and facilitating understanding by those skilled in the art. It should not be assumed that the above technical solutions are known to those skilled in the art simply because they have been described in the background section of this application.

[0004] In view of the above, it is necessary to provide a battery cell coating equipment and coating method to solve the problems of low coating efficiency and high production cost in the prior art. Summary of the Invention

[0005] In view of the above-mentioned technical problems, the purpose of this invention is to provide an improved battery cell coating equipment and coating method.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A battery cell coating apparatus includes a coating device for coating the sides of battery cells and an adhesive tank for holding adhesive liquid.

[0008] The number of coating devices is N, and each coating device includes an adsorption part for adsorbing the battery cell, wherein N≥2, and N is an integer;

[0009] At least one of the coating apparatuses further includes a rotating part for driving its adsorption part to rotate, the adsorption part being configured to adsorb the battery cells on the adsorption parts of adjacent coating apparatuses;

[0010] Each of the coating devices has a coating station, and when the coating device is in the coating station, at least one side of the battery cell adsorbed by the adsorption section of the coating device is immersed in the adhesive tank.

[0011] Preferably, N coating devices are arranged side by side, each coating device includes a rotating part, and each rotating part can rotate around its own rotation center line to drive the adsorption part to rotate.

[0012] Further, the coating apparatus includes:

[0013] A first coating apparatus, comprising a first rotating part and a first adsorption part for adsorbing the battery cell, wherein the first rotating part and the first adsorption part are fixedly connected, and the first rotating part is capable of rotating around a first rotation center line to drive the first adsorption part to rotate, wherein the first rotation center line extends along a first direction.

[0014] The second coating apparatus includes a second rotating part and a second adsorption part for adsorbing the battery cell. The second rotating part and the second adsorption part are fixedly connected. The second rotating part is rotatable about a second rotation center line to drive the second adsorption part to rotate. The second rotation center line extends along the first direction. The second adsorption part is configured to grip the battery cell on the first adsorption part.

[0015] Furthermore, the first coating device and the second coating device are arranged horizontally side by side along a second direction, which is perpendicular to the first direction.

[0016] Furthermore, the adhesive tank includes a first adhesive tank disposed below the first coating device and a second adhesive tank disposed below the second coating device.

[0017] Preferably, the adsorption section includes a plurality of vacuum suction cups arranged at equal intervals, and the adsorption section can adsorb a plurality of battery cells; when the coating device is in working condition, each battery cell is adsorbed by one of the vacuum suction cups, and the vacuum suction cups are all located on one side of the thickness direction of the battery cell.

[0018] Furthermore, the adsorption section further includes:

[0019] A fixing part, wherein a plurality of the vacuum suction cups are disposed on the lower surface of the fixing part, and the upper surface of the fixing part also has a protrusion;

[0020] A first connecting part is disposed above the fixed part. The lower part of the first connecting part is provided with a first sliding groove extending along a first direction. The protrusion is inserted into the first sliding groove, so that the fixed part can drive a plurality of vacuum suction cups to move horizontally along the first direction.

[0021] The rotating part also includes a drive motor, the output shaft of which is connected to a rotating shaft. The rotating shaft rotates to drive the adsorption part to rotate. The drive motor is located above the first connecting part.

[0022] Furthermore, the battery cell coating apparatus further includes a first slide rail extending along a second direction, and the coating device further includes:

[0023] The second connecting part is disposed above the first slide rail, and the second connecting part can slide horizontally along the first slide rail;

[0024] A connecting column is fixedly connected to the second connecting part. The connecting column extends in the vertical direction and is provided with a second sliding groove extending in the vertical direction.

[0025] The third connecting part is inserted into the second sliding groove of the connecting column. The third connecting part can slide in the up and down direction. The third connecting part and the rotating part are fixedly connected.

[0026] Preferably, each of the coating devices further includes a detachment station, wherein when the coating device is in the detachment station, the battery cells adsorbed by the adsorption section of the coating device detach from the adhesive tank. Coating device

[0027] Preferably, the battery cell coating equipment further includes a conveying structure for conveying the battery cells, the conveying mechanism comprising:

[0028] The basket feeding device is used to store the battery cells, and the basket feeding device can move horizontally in a second direction;

[0029] A lifting device is located below the basket loading device;

[0030] A correction and positioning device is disposed above the basket feeding device, and the coating device is used to adsorb the battery cell from the correction and positioning device.

[0031] Furthermore, the battery cell coating equipment also includes a second slide rail extending along the second direction, and the basket feeding device includes:

[0032] A feeding trough, in which the battery cells are placed, is located above the second slide rail and can slide horizontally along the second slide rail;

[0033] The feeding trough includes a front baffle and a rear baffle arranged opposite to each other. Limiting blocks are respectively provided on the front side of the front baffle and the rear side of the rear baffle. A left baffle and a right baffle are also provided between the front baffle and the rear baffle. The left baffle and the right baffle are arranged opposite to each other. The left baffle is perpendicular to the front baffle and the rear baffle, and the right baffle is perpendicular to the front baffle and the rear baffle.

[0034] Furthermore, the lifting device includes two lifting frames arranged side by side that can move in the vertical direction and lifting teeth arranged above the lifting frames. Several lifting teeth are arranged vertically and at equal intervals. The upper part of the lifting teeth is conical. When the lifting device is in working state, each lifting tooth extends into the gap between two adjacent battery cells.

[0035] Furthermore, an intermediate tooth is provided between the two lifting frames, the height of which is less than the height of the lifting tooth; the intermediate tooth can move in the vertical direction.

[0036] Furthermore, the correction and positioning device includes two transverse frames that can approach each other. The transverse frames are provided with a plurality of transverse teeth arranged along a first direction and at equal intervals. The ends of the transverse teeth are tapered. When the correction and positioning device is in working state, the two transverse frames approach each other in the horizontal direction, and each transverse tooth extends into the gap between two adjacent battery cells.

[0037] A method for coating solar cells, using the aforementioned solar cell coating equipment, the coating method comprising:

[0038] S1. The adsorption section of the coating device adsorbs the battery cell;

[0039] S2. The coating device moves to the coating station, so that the first side of the battery cell is immersed in the adhesive tank.

[0040] S3. The coating device disengages from the coating station, and after the rotating part rotates, the coating device moves back to the coating station, so that the side adjacent to the first side is immersed in the adhesive tank.

[0041] S4. The adsorption unit of another coating device adsorbs the battery cell from step S3 and immerses the uncoated side of the battery cell into the adhesive tank.

[0042] Preferably, step S3 includes:

[0043] S31. The coating device disengages from the coating station. After the rotating part rotates 90 degrees, the coating device moves back to the coating station, so that the second side of the battery cell is immersed in the adhesive tank. The second side is the adjacent side of the first side.

[0044] Further, step S4 includes:

[0045] S41. After the rotating part of another coating device rotates 90 degrees, it adsorbs the vicinity of the first side of the battery cell, so that the third side of the battery cell is immersed in the adhesive tank, and the third side and the first side are two opposite sides.

[0046] S42. Another coating device detaches from the coating station, and the rotating part of the other coating device rotates 90 degrees and moves back to the coating station, so that the fourth side of the battery cell is immersed in the adhesive tank, the fourth side and the second side being two opposite sides.

[0047] Preferably, step S3 includes:

[0048] S32. The coating device disengages from the coating station, and after the rotating part rotates 90 degrees, the coating device moves back to the coating station, so that the second side of the battery cell is immersed in the adhesive tank, and the second side is the adjacent side of the first side.

[0049] S33. The coating device disengages from the coating station. After the rotating part rotates 180 degrees, the coating device moves back to the coating station, immersing the fourth side of the battery cell into the adhesive tank. The fourth side and the second side are two opposite sides.

[0050] Further, step S4 includes:

[0051] S43. Another part of the coating device adsorbs the first side of the battery cell near the first side, so that the third side of the battery cell is immersed in the adhesive tank, wherein the third side and the first side are two opposite sides.

[0052] Preferably, prior to step S1, the coating method further includes:

[0053] SA, place the battery cells in the basket feeding device, and move the basket feeding device horizontally along the second direction until it moves above the lifting device;

[0054] SB, the lifting device pushes the battery cell out of the flower basket feeding device until the battery cell moves to the correction and positioning device;

[0055] SC, the correction and positioning device corrects the position spacing of the battery cells.

[0056] Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

[0057] The battery cell coating equipment of the present invention, by setting up N coating devices, and at least one coating device having a rotating part, allows the coating process to be completed by one coating device completing the coating of one side edge, and the rotating part of another coating device having a rotating part rotates to drive the adsorption part to rotate, so that the battery cell is immersed in the adhesive in the adhesive tank after multiple rotations, thereby completing the coating of the remaining side edges, which improves the coating efficiency of the battery cell and reduces the production cost.

[0058] In a further preferred embodiment, after one coating device completes coating one side edge, the rotating part drives the adsorption part to rotate, causing the battery cell to rotate 90 degrees before immersing it in the adhesive solution in the adhesive tank. This means that one coating device can complete coating at least two sides of the battery cell, and then an adjacent coating device completes coating of the remaining side edges. Furthermore, the adsorption part of each coating device can simultaneously adsorb several battery cells, achieving batch coating of the battery cells, further improving coating efficiency and reducing production costs. In another further preferred embodiment, by setting a correction and positioning device, several battery cells can be arranged at equal intervals, ensuring more uniform adhesive coating on the edges of each battery cell during subsequent immersion in the adhesive tank and preventing adhesion. Attached Figure Description

[0059] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0060] Figure 1 This is a three-dimensional structural diagram of a battery cell coating device with two coating units as described in Embodiment 1 of the present invention;

[0061] Figure 2 This is a front view of a battery cell coating device with two coating apparatuses as described in Embodiment 1 of the present invention.

[0062] Figure 3 for Figure 1 A three-dimensional structural diagram of the first or second coating device of the solar cell coating equipment adsorbing solar cells in the first state;

[0063] Figure 4 for Figure 1 A front view of the first or second coating device of the solar cell coating equipment adsorbing solar cells in the first state;

[0064] Figure 5 for Figure 1 A side view of the first or second coating device of the solar cell coating equipment adsorbing solar cells in the first state;

[0065] Figure 6 for Figure 1 A three-dimensional structural diagram of the first coating device of the solar cell coating equipment adsorbing solar cells in the second state or the third state of the second coating device;

[0066] Figure 7 for Figure 1A front view of the first coating device of the solar cell coating equipment adsorbing solar cells in the second state or the second coating device in the third state;

[0067] Figure 8 for Figure 1 A side view of the first coating device of the solar cell coating equipment adsorbing solar cells in the second state or the second coating device in the third state;

[0068] Figure 9 for Figure 1 A three-dimensional structural diagram of the second coating device of the solar cell coating equipment adsorbing solar cells in the second state;

[0069] Figure 10 for Figure 1 A front view of the second coating device of the solar cell coating equipment adsorbing solar cells in the second state;

[0070] Figure 11 for Figure 1 A side view of the second coating device of the solar cell coating equipment adsorbing solar cells in the second state;

[0071] Figure 12 This is a three-dimensional structural diagram of a battery cell coating device with three coating units as described in Embodiment 1 of the present invention;

[0072] Figure 13 for Figure 12 A three-dimensional structural diagram of the second or third coating device of the solar cell coating equipment adsorbing solar cells in the second state;

[0073] Figure 14 for Figure 12 A front view of the second or third coating device of the solar cell coating equipment adsorbing solar cells in the second state;

[0074] Figure 15 for Figure 12 A side view of the second or third coating device of the solar cell coating equipment adsorbing solar cells in the second state;

[0075] Figure 16 for Figure 12 A three-dimensional structural diagram of the second or third coating device of the solar cell coating equipment adsorbing solar cells in the first state;

[0076] Figure 17 for Figure 12 A front view of the second or third coating device of the solar cell coating equipment adsorbing solar cells in the first state;

[0077] Figure 18 for Figure 12A side view of the second or third coating device of the solar cell coating equipment adsorbing solar cells in the first state;

[0078] Figure 19 for Figure 12 A three-dimensional structural diagram of the second coating device of the solar cell coating equipment adsorbing solar cells in the third state;

[0079] Figure 20 for Figure 12 A front view of the second coating device of the solar cell coating equipment adsorbing solar cells in the third state;

[0080] Figure 21 for Figure 12 A side view of the second coating device of the solar cell coating equipment adsorbing solar cells in the third state;

[0081] Figure 22 This is a three-dimensional structural diagram of a battery cell coating device with four coating units as described in Embodiment 1 of the present invention;

[0082] Figure 23 This is a three-dimensional structural diagram of the coating device in Embodiment 1 of the present invention;

[0083] Figure 24 This is a front view of the coating apparatus in Embodiment 1 of the present invention;

[0084] Figure 25 This is a side view of the coating apparatus in Embodiment 1 of the present invention;

[0085] Figure 26 for Figure 1 A magnified view of a portion of point A in the middle;

[0086] Figure 27 for Figure 1 A magnified view of a portion of point B in the middle;

[0087] Figure 28 This is a schematic flowchart of the battery cell coating method in Embodiment 2 of the present invention;

[0088] Among them, 1. Coating device; 10. Battery cell; 11. Rotating part; 111. Drive motor; 112. Rotating shaft; 12. Adsorption part; 121. Vacuum suction cup; 122. Fixing part; 1221. Protrusion; 123. First connecting part; 1231. First slide groove; 124. Rotation center line; 13. First slide rail; 14. Second connecting part; 15. Connecting column; 151. Second slide groove; 16. Third connecting part; 17. Second slide rail; 2. Adhesive tank; 3. Flower basket feeding device; 31. Feeding trough; 311. Front baffle; 312. Rear baffle; 313. Limiting block; 314. Left baffle; 4. Lifting device; 41. Lifting frame; 42. Lifting tooth; 5. Correction and positioning device; 51. Horizontal moving frame; 52. Horizontal tooth; X, First direction; Y, Second direction; Z, Up and down direction. Detailed Implementation

[0089] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0090] In the description of this invention, as Figure 2 In the figure, the upper direction is "up", the lower direction is "down", the left direction is "left", the right direction is "right", and the direction perpendicular to the paper is "front" and "back". The directions "front", "back", "left", "right", "up", and "down" are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0091] Example 1

[0092] The solar cell coating equipment in this embodiment is mainly used to coat solar cells 10. Solar cells 10 are typically rectangular and have four sides. For ease of description in the following embodiments, the four sides of the solar cell 10 are sequentially designated as the first side, second side, third side, and fourth side, with the first and third sides facing each other, and the second and fourth sides facing each other. The coating area is concentrated on the four sides of the solar cell 10. Specifically, the sides to be coated refer to the sides between the front and back of the solar cell, as well as the edges of the front and back sides. The coating adhesive can be insulating adhesive, sealant, or other colloids; specific details are not limited here.

[0093] like Figures 1 to 2As shown, the battery cell 10 coating equipment in this embodiment includes a conveying mechanism for conveying the battery cells 10. To facilitate description and understanding of the specific structure of the battery cell 10 coating equipment, a three-dimensional XYZ coordinate system is constructed in this embodiment with the conveying mechanism as a reference. The first direction X, the second direction Y, and the vertical direction Z are mutually perpendicular, and the first direction X and the second direction Y extend horizontally along the coating equipment. The battery cell 10 coating equipment also includes a coating device 1 for coating the sides of the battery cells 10 and a glue tank 2 for holding the glue solution. The number of coating devices 1 is N, and each coating device 1 includes an adsorption part 12 for adsorbing the battery cells 10, where N ≥ 2, and N is an integer. At least one coating device 1 also includes a rotating part 11 for rotating its adsorption part 12. The adsorption part 12 is configured to adsorb the battery cells 10 on the adsorption parts 12 of adjacent coating devices 1. Each coating device 1 has a coating station. When the coating device 1 is in the coating station, at least one side of the battery cell 10 adsorbed by the adsorption part 12 of the coating device 1 is immersed in the adhesive tank 2. Furthermore, each coating device 1 also has a detachment station. When the coating device 1 is in the detachment station, the battery cell 10 adsorbed by the adsorption part 12 of the coating device 1 is detached from the adhesive tank 2. The conveying mechanism specifically includes a basket loading device 3, a lifting device 4, and a correction and positioning device 5. The basket loading device 3 is used to store the battery cell 10 and can move horizontally along the second direction Y. The lifting device 4 is located below the basket loading device 3 and is used to push out the battery cell 10. The correction and positioning device 5 is located above the basket loading device 3 and is used to correct the position of the battery cell 10. The coating device 1 adsorbs the battery cell 10 from the correction and positioning device 5 and coats the battery cell 10 through the adhesive tank 2.

[0094] In this embodiment, the operation process of the coating equipment for battery cell 10 is as follows:

[0095] After placing several battery cells 10 into the basket loading device 3, the basket loading device 3 moves along the second direction Y until it moves directly above the lifting device 4. The lifting device 4 pushes the battery cells 10 out of the basket loading device 3 and moves the battery cells 10 upwards along the vertical direction Z until they are moved into the correction and positioning device 5. The correction and positioning device 5 corrects the positional spacing of the battery cells 10. The coating device 1 picks up several battery cells 10 from the correction and positioning device 5, and through the rotating part 11, it sequentially drives the battery cells 10 picked up by the adsorption part 12, immersing the sides of the battery cells 10 into the adhesive tank 2 in sequence. At the coating station, the four sides of the battery cells 10 are sequentially coated through the adhesive tank 2. After the battery cells 10 are coated, they are removed from the adhesive tank 2.

[0096] In this embodiment, several battery cells 10 are immersed in the adhesive in the adhesive tank 2 after being rotated multiple times by multiple coating devices 1, thereby jointly completing the coating of several side edges of the battery cells, which improves the coating efficiency of the battery cells 10; the adsorption part 12 of each coating device 1 can adsorb several battery cells 10 at the same time, realizing batch coating of battery cells 10, improving the coating efficiency of battery cells, reducing manpower and material resources, and thus reducing production costs.

[0097] Furthermore, N coating devices 1 are arranged side by side. For example... Figure 1 As shown, the rotating part 11 can rotate around a rotation center line 124 to drive the adsorption part 12 to rotate. In this embodiment, the rotating part 11 and the adsorption part 12 are fixedly connected, and the rotating part 11 can rotate around a rotation center line 124 to drive the adsorption part 12 to rotate; further, the rotating part 11 drives the adsorption part 12 to rotate 90° each time. The rotation center line 124 extends along a horizontal first direction X, which in this embodiment is specifically the front-back direction of the conveying mechanism, such as... Figure 1 The arrow annotation in the text.

[0098] Specifically, such as Figures 1 to 11 As shown, in one example of this embodiment, the coating apparatus for the battery cell 10 comprises two coating devices, including a first coating device and a second coating device. The first coating device and the second coating device are arranged side by side along a second horizontal direction Y. The first coating device includes a first rotating part and a first adsorption part for adsorbing the battery cell 10. The first rotating part and the first adsorption part are fixedly connected. The first rotating part can rotate around a first rotation center line to drive the first adsorption part to rotate, and the first rotation center line extends along a first direction X. The second coating device includes a second rotating part and a second adsorption part for adsorbing the battery cell 10. The second rotating part and the second adsorption part are fixedly connected. The second rotating part can rotate around a second rotation center line to drive the second adsorption part to rotate, and the second rotation center line extends along the first direction X. The structures of the first coating device and the second coating device in this embodiment are completely identical. The second adsorption part is configured to adsorb the battery cell 10 on the first adsorption part. The adsorption part adsorbs near the side of the battery cell 10 and does not affect the side coating of the battery cell 10. The first rotating part and the second rotating part can rotate 90° each time to cooperate with the side coating of the battery cell 10. In this example, the first state is characterized by both the first rotating part and the first adsorption part of the first coating device being arranged along the vertical direction Z. Similarly, the first state is also characterized by both the second rotating part and the second adsorption part of the second coating device being arranged along the vertical direction Z. In the first state, the first coating device adsorbs the battery cell 10 (e.g., ...). Figures 3 to 5As shown), that is, the first adsorption part adsorbs near the first side of the battery cell 10, and coats the opposite side of the first side of the battery cell 10, i.e., the third side, at the coating station. After the third side is coated, the first rotating part drives the first adsorption part to rotate 90 degrees toward the direction of the second coating device to enter the second state (as shown). Figures 6 to 8 As shown), the fourth side of the battery cell 10 is coated; after the fourth side is coated, the second coating device is in the first state, and the second rotating part drives the second adsorption part to rotate 90 degrees towards the first coating device to enter the second state. In the second state, the second adsorption part adsorbs the battery cell 10 adsorbed by the first adsorption part (as shown). Figures 9 to 11 As shown), at this time, the second adsorption part adsorbs near the third side of the battery cell 10, and the second rotating part drives the second adsorption part to rotate 90 degrees away from the first coating device, returning to the first state (as shown). Figures 3 to 5 As shown), at the coating station, the first side, opposite the third side of the battery cell 10, is coated. After the first side is coated, the second rotating part drives the second adsorption part to rotate 90 degrees away from the first coating device to enter the third state (as shown). Figures 6 to 8 (As shown), the second side of the battery cell 10 is then coated. This completes the coating process on all four sides of the battery cell 10. In another embodiment of this example, the first coating device includes only a first adsorption part for adsorbing the battery cell 10. The second coating device includes a second rotating part and a second adsorption part for adsorbing the battery cell 10. The first coating device can only coat one side of the battery cell 10, while the second coating device coats the other three adjacent sides of the battery cell 10. For example, the first coating device coats the third side of the battery cell 10, the adsorption part of the second coating device adsorbs the third side of the battery cell 10, and then coats the other three adjacent sides of the battery cell 10 in sequence; or, the first coating device includes a first rotating part and a first adsorption part for adsorbing the battery cell 10. The second coating device includes only a second adsorption part for adsorbing the battery cell 10. The first coating device coats three adjacent sides of the battery cell 10, while the second coating device coats the other side of the battery cell 10.

[0099] like Figure 12As shown, in another example of this embodiment, the coating apparatus for the battery cell 10 comprises three coating devices, including a first coating device, a second coating device, and a third coating device. The first, second, and third coating devices are arranged side-by-side along a horizontal second direction Y. The first coating device includes only a first adsorption section for adsorbing the battery cell 10. The second coating device includes a second rotating section and a second adsorption section for adsorbing the battery cell 10. The second rotating section and the second adsorption section are fixedly connected. The second rotating section is rotatable about a second rotation center line to drive the second adsorption section to rotate, and the second rotating section can rotate 90° each time to cooperate with the side coating of the battery cell 10. The second rotation center line extends along a first direction X. The second adsorption section is configured to pick up the battery cell 10 from the first adsorption section. The third coating device includes a third rotating section and a third adsorption section for adsorbing the battery cell 10. The third rotating section and the third adsorption section are fixedly connected. The third rotating section is rotatable about a third rotation center line to drive the third adsorption section to rotate, and the third rotating section can rotate 90° each time to cooperate with the side coating of the battery cell 10. The third rotation center line extends along a first direction X. The third adsorption section is configured to pick up the battery cell 10 from the second adsorption section. The adsorption section adsorbs near one side of the battery cell 10, without affecting the coating of each side of the battery cell 10. In this example, the first state is when both the rotating section and the adsorption section of the coating device are arranged in the vertical direction Z. In the first state, the first coating device adsorbs the battery cell 10, that is, the first adsorption section adsorbs near the first side of the battery cell 10, and coats the opposite side of the first side of the battery cell 10, i.e., the third side, at the coating station; the second coating device is in the first state at this time, and the second rotating section drives the second adsorption section to rotate 90 degrees toward the direction closer to the first coating device to enter the second state. In the second state, the second adsorption section adsorbs the battery cell 10 adsorbed by the first adsorption section (e.g., ...). Figures 13 to 15 As shown), at this time, the second adsorption part adsorbs near the second side of the battery cell 10, and the second rotating part drives the second adsorption part to rotate 90 degrees away from the first coating device, returning to the first state (as shown). Figures 16 to 18 As shown), coating is performed on the opposite side (fourth side) of the second side of the battery cell 10 at the coating station. The second rotating part continues to drive the second adsorption part to rotate 90 degrees away from the first coating device to enter the third state (as shown). Figures 19 to 21 As shown), the first side of the battery cell 10 is coated at the coating station; the third coating device is in the first state at this time, and the third rotating part drives the third adsorption part to rotate 90 degrees towards the second coating device to enter the second state, and the third adsorption part adsorbs the battery cell 10 adsorbed by the second adsorption part (as shown). Figures 13 to 15 As shown), at this time, the third adsorption part adsorbs near the fourth side of the battery cell 10, and the third rotating part drives the third adsorption part to rotate 90 degrees away from the second coating device, returning to the first state (as shown). Figures 16 to 18As shown, the second side (opposite to the fourth side) of the battery cell 10 is coated at the coating station. This completes the coating process on all four sides of the battery cell 10. Alternatively, the side coating operations performed by the second and third coating devices can be interchanged, and can be set according to actual needs. No restrictions are placed on the side coating operations performed by the second and third coating devices here.

[0100] Specifically, such as Figure 22As shown, in another example of this embodiment, the coating apparatus for the battery cell 10 comprises four coating devices, including a first coating device, a second coating device, a third coating device, and a fourth coating device. The first, second, third, and fourth coating devices are arranged side-by-side along a horizontal second direction Y. The first coating device includes only a first adsorption section for adsorbing the battery cell 10. The second coating device includes a second rotating section and a second adsorption section for adsorbing the battery cell 10. The second rotating section and the second adsorption section are fixedly connected. The second rotating section is rotatable about a second rotation center line to drive the second adsorption section to rotate, and the second rotating section can rotate 90° each time to cooperate with the side coating of the battery cell 10. The second rotation center line extends along a first direction X. The second adsorption section is configured to pick up the battery cell 10 from the first adsorption section. The third coating device includes a third rotating section and a third adsorption section for adsorbing the battery cell 10. The third rotating section and the third adsorption section are fixedly connected. The third rotating section is rotatable about a third rotation center line to drive the third adsorption section to rotate, and the third rotating section can rotate 90° each time to cooperate with the side coating of the battery cell 10. The third rotation center line extends along a first direction X. The third adsorption section is configured to pick up the battery cell 10 from the second adsorption section. The fourth coating apparatus includes a fourth rotating section and a fourth adsorption section for adsorbing the battery cell 10. The fourth rotating section and the fourth adsorption section are fixedly connected. The fourth rotating section is capable of rotating about a fourth rotation center line to drive the fourth adsorption section to rotate. The fourth rotating section can rotate 90° each time to cooperate with the side coating of the battery cell 10. The fourth rotation center line extends along a first direction X. The fourth adsorption section is configured to pick up the battery cell 10 from the third adsorption section. The adsorption section adsorbs near one side of the battery cell 10 without affecting the coating of each side of the battery cell 10. In this example, the first state is when the rotating section and adsorption section of all coating apparatuses are arranged along the vertical direction Z.In its first state, the first coating device adsorbs the battery cell 10, with the first adsorption part adsorbing near the first side of the battery cell 10. At the coating station, it coats the opposite side (third side) of the battery cell 10. In its second state, the second rotating part drives the second adsorption part to rotate 90 degrees towards the first coating device, entering the second state. In this second state, the second adsorption part adsorbs the battery cell 10 adsorbed by the first adsorption part, adsorbing near the second side of the battery cell 10. The second rotating part then drives the second adsorption part to rotate 90 degrees away from the first coating device, returning to the first state, and coats the opposite side (fourth side) of the battery cell 10 at the coating station. In its third state, the third rotating part drives the third adsorption part to rotate 90 degrees towards the second coating device, entering the second state. In the first state, the third adsorption unit in the second state adsorbs the battery cell 10 adsorbed by the second adsorption unit. At this time, the second adsorption unit adsorbs near the third side of the battery cell 10. The third rotating unit drives the third adsorption unit to rotate 90 degrees away from the second coating device, returning to the first state. At the coating station, the opposite side of the third side of the battery cell 10, i.e., the first side, is coated. The fourth coating device is in the first state at this time. The fourth rotating unit drives the fourth adsorption unit to rotate 90 degrees towards the third coating device to enter the second state. In the second state, the fourth adsorption unit adsorbs the battery cell 10 adsorbed by the third adsorption unit. At this time, the fourth adsorption unit adsorbs near the fourth side of the battery cell 10. The fourth rotating unit drives the fourth adsorption unit to rotate 90 degrees away from the third coating device, returning to the first state. At the coating station, the opposite side of the fourth side of the battery cell 10, i.e., the first side, is coated. Thus, the coating treatment of all four sides of the battery cell 10 is achieved.

[0101] In the above example, in order to balance the machine cycle, it is preferable to use two coating devices 1. The two coating devices 1 are completely identical, each including a rotating part and an adsorption part for adsorbing the battery cells 10.

[0102] In one example of this embodiment, the adhesive tank 2 is located below the coating device 1. This example uses two coating devices 1, with the adhesive tank 2 located below both the first and second coating devices. Because the adhesive tank 2 needs to hold the battery cells 10 adsorbed by the first adsorption part of the first coating device and the battery cells 10 adsorbed by the second adsorption part of the second coating device, the opening of the adhesive tank 2 is relatively large. During the coating process, splashing is very likely to occur. Furthermore, the larger the volume of the adhesive tank 2, the greater the demand for adhesive, which can easily lead to unnecessary cost losses. Further, the adhesive tank 2 specifically includes a first adhesive tank and a second adhesive tank. The first adhesive tank is located below the first coating device, and the second adhesive tank is located below the second coating device. Further, the first adhesive tank is located directly below the first coating device, and / or the second adhesive tank is located directly below the second coating device, so that the battery cells 10 held on the first adsorption part can accurately pick up the adhesive contained in the first adhesive tank, and / or the battery cells 10 held on the second adsorption part can accurately pick up the adhesive contained in the second adhesive tank. By setting two adhesive tanks 2, the size of the adhesive tanks and the volume of adhesive can be customized according to each coating device and the number of battery cells 10 adsorbed each time, thereby further reducing costs. In other examples of this embodiment, the number of adhesive tanks 2 is the same as the number of coating devices, and they are all set in a corresponding manner.

[0103] like Figures 23 to 25As shown, the adsorption section 12 includes a plurality of vacuum suction cups 121, preferably vacuum suction cups 121 arranged at equal intervals. The adsorption section 12 can adsorb a plurality of battery cells 10, the number of battery cells 10 adsorbed being no greater than the number of vacuum suction cups 121. The plurality of battery cells 10 are arranged regularly, with their side projections completely overlapping. When the coating device 1 is in working condition, each battery cell 10 is adsorbed by one vacuum suction cup 121, and the vacuum suction cups 121 are all located on one side of the thickness direction of the battery cell 10. Further, the vacuum suction cups 121 are all located on the same side of the thickness direction of the battery cell 10, and the vacuum suction cups 121 are evenly spaced, so that after the vacuum suction cups 121 adsorb the battery cells 10, there is a gap between every two adjacent battery cells 10. The width of the vacuum suction cups 121 is less than the narrowest width of the battery cell 10, so that after the vacuum suction cups 121 adsorb the battery cells 10, the empty part of the battery cell 10 does not affect the coating. The adsorption section 12 also includes a fixing section 122 and a first connecting section 123. Specifically, several vacuum suction cups 121 are disposed on the lower surface of the fixing part 122, and the upper surface of the fixing part 122 also has a protrusion 1221. A first connecting part 123 is disposed above the fixing part 122. The lower part of the first connecting part 123 is provided with a first sliding groove 1231 extending along the first direction X, and the protrusion 1221 is inserted into the first sliding groove 1231, so that the fixing part 122 can drive several vacuum suction cups 121 to move horizontally along the first direction X. By providing the first sliding groove 1231, the fixing part 122 can drive the vacuum suction cups 121 to slide back and forth in the first direction X, so that when the adsorption part 12 adsorbs the battery cell 10, each vacuum suction cup 121 can be aligned with the gap of each battery cell 10. In the subsequent process of immersion in the adhesive tank 2 for coating, the edges of each battery cell 10 can be coated more evenly, and adhesion can be avoided.

[0104] The rotating part 11 includes a drive motor 111, the output shaft of which is connected to a rotating shaft 112. The drive motor 111 drives the rotating shaft 112 to rotate around a rotation center line 124, so as to synchronously drive the adsorption part 12 to rotate. Figures 23 to 25 As shown, the drive motor 111 is positioned above the first connecting part 123.

[0105] like Figure 1As shown, the coating equipment for the battery cell 10 also includes a first slide rail 13 extending along the second direction Y. The coating device 1 also includes a second connecting part 14, a connecting post 15, and a third connecting part 16. Specifically, the first slide rail 13 extends along the second direction Y, and two rows of first slide rails 13 are arranged side by side in the first direction X. The second connecting part 14 has a rectangular structure, with its two short sides located above the two rows of first slide rails 13, and the second connecting part 14 can slide horizontally along the second direction Y. The connecting post 15 and the second connecting part 14 are fixedly connected. The connecting post 15 extends along the vertical direction Z, and the connecting post 15 is provided with a second sliding groove 151 extending along the vertical direction Z. The third connecting part 16 is inserted into the second sliding groove 151, and the third connecting part 16 is fixedly connected to the rotating part 11. The third connecting part 16 can drive the rotating part 11 and the adsorption part 12 below to move together along the vertical direction Z. By setting the first slide rail 13, the coating device 1 can slide left and right along the second direction Y, which facilitates the coating device 1 to adsorb the battery cell 10 on another adjacent coating device 1. By setting the connecting column 15, the battery cell 10 adsorbed by the adsorption part 12 can move in the vertical direction Z, which makes it convenient for the battery cell 10 held by the adsorption part 12 to be immersed in the adhesive tank 2. After the coating is completed, the coating device 1 can also move upward as a whole, which makes it convenient for the rotating part 11 to rotate and provides sufficient space for the rotating part 11 to drive the adsorption part 12.

[0106] like Figure 1 and Figure 26As shown, the basket loading device 3 is used to store the battery cells 10. The basket loading device 3 can move horizontally along the second direction Y. Specifically, the battery cell 10 coating equipment also includes a second slide rail 17 extending along the second direction Y. The basket loading device 3 includes a loading trough 31, in which the battery cells 10 are placed. Further, the battery cells 10 are arranged sequentially at equal intervals along the first direction X, that is, the rear surface of the previous battery cell 10 is parallel to the front surface of the next battery cell 10. The loading trough 31 is located above the second slide rail 17 and can slide horizontally along the second slide rail 17. The loading trough 31 specifically includes a front baffle 311 and a rear baffle 312 arranged opposite each other. The front baffle 311 and the rear baffle 312 are arranged parallel to each other along the first direction X, and the height of the front baffle 311 and the rear baffle 312 in the vertical direction Z is greater than the length of the battery cell 10. Typically, the battery cell 10 is rectangular in shape, with two opposite short sides and two opposite long sides on its four sides. In one example, the battery cell 10 is placed along its short side in the vertical direction Z, and the height of the front baffle 311 and the rear baffle 312 in the vertical direction Z is greater than the length of the short side of the battery cell 10. In another preferred example, the battery cell 10 is placed along its long side in the vertical direction Z, and the height of the front baffle 311 and the rear baffle 312 in the vertical direction Z is greater than the length of the long side of the battery cell 10. Limiting blocks 313 are also provided on the front side of the front baffle 311 and the rear side of the rear baffle 312, respectively. The limiting blocks 313 mainly serve a limiting function, restricting the position of the front baffle 311 and the rear baffle 312 according to the number and thickness of the battery cells 10, preventing the battery cells 10 from tilting or shifting in the front-rear direction. A left baffle 314 and a right baffle (not shown in the figure) are respectively provided between the front baffle 311 and the rear baffle 312, and the left baffle 314 and the right baffle are arranged opposite to each other. The left baffle 314 is perpendicular to the front baffle 311 and the rear baffle 312, and the right baffle is perpendicular to the front baffle 311 and the rear baffle 312. By providing the left and right baffles, the battery cell 10 can be prevented from tilting or shifting in the left and right direction.

[0107] like Figure 2 and Figure 27As shown, the lifting device 4 is located below the basket loading device 3. The lifting device 4 includes two lifting frames 41 arranged side by side and lifting teeth 42 arranged above the lifting frames 41. The lifting teeth 42 are arranged to move along the Z direction. Several lifting teeth 42 are arranged vertically and at equal intervals. The upper part of the lifting teeth 42 is conical, and the bottom is set on an integral plane to support the battery cells 10 during the lifting process. When the lifting device 4 is in working condition, it is located directly below the basket loading device 3. Each lifting tooth 42 extends into the gap between any two adjacent battery cells 10 in the basket loading device 3. Two lifting teeth 42 extend into the gap between any two adjacent battery cells 10. The two lifting teeth 42 are respectively set at two positions near the side edges of the battery cells 10 to push the battery cells 10 out of the loading trough 31 of the basket loading device 3. It should be noted that the conical shape of the upper part of the lifting tooth 42 facilitates its insertion into the gap between any two adjacent battery cells 10. When the lifting device 4 completely ejects the battery cells 10 from the loading trough 31 of the basket loading device 3, that is, when the height of the lowest side of the battery cell 10 in the vertical Z direction is higher than the highest point of any one of the front baffle 311, rear baffle 312, left baffle 314, and right baffle of the loading trough 31, this ensures sufficient correction space during the subsequent correction and positioning device 5 correction of the battery cells 10, and sufficient adsorption space during the adsorption part 12 of the coating device 1 adsorbing the battery cells 10. The specific height of the lowest side of the battery cell 10 in the vertical Z direction can be set according to the overall spatial structure of the equipment, as long as the above requirements are met. A cylinder or other driving mechanism is provided below the lifting frame 41 to drive the lifting tooth 42 to move up and down in the vertical Z direction. The specific driving method is not limited here and can be selected according to actual needs. Furthermore, a row of intermediate teeth can be provided between the two lifting frames 41, with the height of the intermediate teeth being less than the height of the lifting teeth 42. The lifting teeth 42 are driven upward by the lifting frames 41 to prevent the battery cell 10 from tilting during the upward movement. By providing intermediate teeth, after the lifting frames 41 have completed their ascent, the intermediate teeth move upward slightly, which can further correct the battery cell 10 and improve the accuracy of the battery cell 10's position adjustment.

[0108] The alignment and positioning device 5 is positioned above the basket feeding device 3, and the coating device 1 adsorbs the battery cell 10 from within the alignment and positioning device 5. Figure 27 As shown, the correction and positioning device 5 includes two transverse sliding frames 51 that can approach each other in the second direction Y. Furthermore, the two transverse sliding frames 51 are arranged parallel to each other on the same horizontal plane. It should be noted that... Figure 27Only one transverse frame 51 located on one side is shown. The transverse frame 51 has several identical transverse teeth 52 arranged laterally and at equal intervals. The ends of the transverse teeth 52 are tapered. When the correction and positioning device 5 is in operation, the two transverse frames 51 approach each other horizontally, and each transverse tooth 52 extends into the gap between two adjacent battery cells 10, so that the battery cells 10 are arranged at equal intervals, achieving a correction and positioning effect. It should be noted that the length of the transverse teeth 52 is much smaller than the length of the shortest side of the battery cell 10, to ensure sufficient correction space during the correction of the battery cell 10, and to ensure sufficient adsorption space for the adsorption part 12 of the coating device 1 during the adsorption of the battery cell 10. It should also be noted that the distance between adjacent transverse teeth 52 is a safe distance width to prevent coating adhesion between any adjacent battery cells 10, and can be selected according to actual needs; no restriction is imposed here.

[0109] The battery cell coating equipment also includes a feeding mechanism (not shown in the figure). A robotic arm is installed between the battery cell coating equipment and the feeding mechanism. When the coating device 1 has completed coating all sides of the battery cell 10, the robotic arm can transfer the coated battery cell 10 to the feeding mechanism for export. Furthermore, the robotic arm's operating end has a structure similar to the suction unit 12, including several vacuum suction cups, for adsorbing the coated battery cell 10 and transferring it to the feeding mechanism. This invention does not limit the structure and specifications of the feeding mechanism; it can be configured according to actual needs.

[0110] The solar cell coating equipment also includes a controller (not shown in the figure), which is electrically connected to the coating device 1, the basket feeding device 3, the lifting device 4 and the correction and positioning device 5 respectively, to receive or send electrical signals.

[0111] Example 2

[0112] like Figure 28 As shown, this embodiment also discloses a coating method for a battery cell 10. The battery cell coating method uses the battery cell coating equipment described in Embodiment 1, and the coating method includes:

[0113] First, a preparatory step is performed: place the battery cell 10 in the basket feeding device 3, and move the basket feeding device 2 horizontally along the second direction Y until it moves above the lifting device 4; the lifting device 4 pushes the battery cell 10 out of the basket feeding device 2 until the battery cell 10 moves to the correction and positioning device 5; the correction and positioning device 5 corrects the position spacing of the battery cell 10.

[0114] Next, step S1 is performed: the adsorption part 12 of the coating device 1 adsorbs the battery cell 10; specifically, the adsorption part 12 adsorbs the battery cell 10 after it has been corrected by the correction and positioning device 5.

[0115] Next, step S2 is performed: the coating device 1 moves to the coating station so that the first side of the battery cell 1 is immersed in the adhesive tank 2.

[0116] In one possible implementation of this embodiment, step S3 is then performed: the coating device 1 leaves the coating station, the rotating part 11 rotates and the coating device 1 moves back to the coating station, so that the side adjacent to the first side of the battery cell 10 is immersed in the adhesive tank 2; specifically, the coating device 1 leaves the coating station, the rotating part 11 rotates 90 degrees and the coating device 1 moves back to the coating station, so that the second side of the battery cell 10 is immersed in the adhesive tank 2, and the second side is the side adjacent to the first side.

[0117] Finally, step S4 is performed: the adsorption part 12 of another coating device 1 adsorbs the battery cell 10 from step S3, immersing the uncoated side of the battery cell 10 into the adhesive tank 2; specifically, the rotating part 11 of the other coating device 1 rotates 90 degrees and adsorbs the first side of the battery cell 10, immersing the third side of the battery cell 10 into the adhesive tank 2, the third side and the first side being two opposite sides of the battery cell 10; the other coating device 1 leaves the coating station, the rotating part 11 of the other coating device 1 rotates 90 degrees and moves back to the coating station, immersing the fourth side of the battery cell 10 into the adhesive tank 2, the fourth side and the second side being two opposite sides of the battery cell 10.

[0118] In one possible implementation of this embodiment, step S3 is then performed: the coating device 1 leaves the coating station, the rotating part 11 rotates and the coating device 1 moves back to the coating station, so that the side adjacent to the first side of the battery cell 10 is immersed in the adhesive tank 2; specifically, the coating device 1 leaves the coating station, the rotating part 11 rotates 90 degrees and the coating device 1 moves back to the coating station, so that the second side of the battery cell 10 is immersed in the adhesive tank 2, the second side being the side adjacent to the first side; the coating device 1 leaves the coating station, the rotating part 11 rotates 180 degrees and the coating device 1 moves back to the coating station, so that the fourth side of the battery cell 10 is immersed in the adhesive tank 2, the fourth side and the second side being the two opposite sides of the battery cell.

[0119] Finally, step S4 is performed: the adsorption part 12 of another coating device 1 adsorbs the battery cell 10 from step S3, and immerses the uncoated side of the battery cell 10 into the adhesive tank 2; specifically, the adsorption part 12 of another coating device 1 adsorbs the first side of the battery cell 10, so that the third side of the battery cell 10 is immersed in the adhesive tank 2, and the third side and the first side are two opposite sides of the battery cell.

[0120] The specific process of the battery cell coating method in this embodiment is as follows:

[0121] Several battery cells 10 are placed in the loading trough 31 of the basket loading device 3 by an operator or a robotic arm. The basket loading device 3 moves along the second direction Y until it is directly above the lifting device 4. The lifting device 4 pushes the lifting frame 41 upward, so that the lifting teeth 42 extend into the gaps between the battery cells 10 and drive the battery cells 10 to move upward as a whole along the vertical direction Z. The battery cells 10 move upward to the space between the two transverse frames 51 of the correction and positioning device 5. The two transverse frames 51 move closer to each other, so that the transverse teeth 52 extend into the gaps between the battery cells 10 to achieve an evenly spaced arrangement of the battery cells 10. The first coating device moves horizontally along the second direction Y and adsorbs a number of battery cells 10. After adsorption, the first coating device moves as a whole along the second direction Y to the right of the conveying mechanism, reaching directly above the first adhesive tank. The third connecting part 16 moves downward along the second chute 151, so that one side of the battery cells 10 is immersed in the adhesive tank 2 at the coating station. After one side of the battery cell 10 is coated, the third connecting part 16 moves upward along the second slide groove 151. The first rotating part of the first coating device rotates 90 degrees at the disengagement station and moves left and right to a suitable position. The third connecting part 16 moves downward along the second slide groove 151, causing adjacent side edges of several battery cells 10 to be immersed in the first adhesive tank, completing the coating of both sides of the battery cell 10. The second coating device moves horizontally in the left-right direction and adsorbs several battery cells 10 on the first coating device. Using the above method, the remaining two sides are coated through the second adhesive tank. It should be noted that the first and second coating devices do not limit the number of sides of the battery cell 10 coated. For example, the first coating device can coat three sides, and the second coating device can coat the remaining one side; or the first coating device can coat one side, and the second coating device can coat the remaining three sides; or multiple coating devices 1 can be used to coat the sides of the battery cell 10 separately. Preferably, the first coating device coats two adjacent sides, and the second coating device coats the remaining two adjacent sides. Before the second coating device adsorbs the several battery cells 10 from the first coating device, the rotating part can also be rotated in advance to save preparation time. The specific coating process is as described above and can be set according to actual needs; it will not be repeated here.

[0122] In summary, the battery cell coating equipment and coating method in this embodiment have at least the following advantages:

[0123] 1. By setting multiple coating devices 1, and at least one coating device 1 having a rotating part 11, during the coating process, after one coating device 1 completes the coating of one side edge, the rotating part 11 of another coating device 1 with a rotating part 11 rotates and drives the adsorption part 12 to rotate, so that the battery cell 10 is immersed in the adhesive in the adhesive tank 2 after multiple rotations, thereby completing the coating of the remaining side edges, which improves the coating efficiency of the battery cell 10 and reduces the production cost.

[0124] 2. The adsorption section 12 of each coating device 1 can adsorb several battery cells 10 at the same time, realizing batch coating of battery cells 10, improving the coating efficiency of battery cells, and reducing production costs.

[0125] 3. By setting the correction and positioning device 5, several battery cells 10 can be arranged at equal intervals. During the subsequent immersion in the adhesive tank for coating, the edges of each battery cell 10 can be coated with adhesive more evenly, and the phenomenon of adhesion can be avoided.

[0126] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0127] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "up," "down," "left," and "right" used in this invention are only relative to the relative positional relationships of the various components of the invention in the accompanying drawings.

[0128] The above embodiments are merely illustrative of the technical concept and features of the present invention, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and they should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made according to the principles of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method for coating solar cells, comprising a solar cell coating device, the solar cell coating device including a coating apparatus for coating the sides of solar cells and an adhesive tank for holding adhesive liquid. Its features are, The number of coating devices is N, and each coating device includes an adsorption part for adsorbing the battery cell, wherein N≥2, and N is an integer; At least one of the coating apparatuses further includes a rotating part for rotating its adsorption part, the adsorption part being configured to adsorb the battery cells on the adsorption parts of adjacent coating apparatuses; Each of the coating devices has a coating station. When the coating device is in the coating station, at least one side of the battery cell adsorbed by the adsorption part of the coating device is immersed in the adhesive tank. The battery cell coating method includes the following steps: S1. The adsorption section of the coating device adsorbs the battery cell; S2. The coating device moves to the coating station, so that the first side of the battery cell is immersed in the adhesive tank. S3. The coating device disengages from the coating station, and after the rotating part rotates, the coating device moves back to the coating station, so that the side adjacent to the first side is immersed in the adhesive tank. S4. The adsorption unit of another coating device adsorbs the battery cell from step S3 and immerses the uncoated side of the battery cell into the adhesive tank.

2. The battery cell coating method according to claim 1, characterized in that, N coating devices are arranged side by side, each of which includes a rotating part, and each rotating part can rotate around its own rotation center line to drive the adsorption part to rotate.

3. The battery cell coating method according to claim 2, characterized in that, The coating apparatus includes: A first coating apparatus, comprising a first rotating part and a first adsorption part for adsorbing the battery cell, wherein the first rotating part and the first adsorption part are fixedly connected, and the first rotating part is capable of rotating around a first rotation center line to drive the first adsorption part to rotate, wherein the first rotation center line extends along a first direction. The second coating apparatus includes a second rotating part and a second adsorption part for adsorbing the battery cell. The second rotating part and the second adsorption part are fixedly connected. The second rotating part is rotatable about a second rotation center line to drive the second adsorption part to rotate. The second rotation center line extends along the first direction. The second adsorption part is configured to grip the battery cell on the first adsorption part.

4. The battery cell coating method according to claim 3, characterized in that, The first coating device and the second coating device are arranged horizontally side by side along a second direction, which is perpendicular to the first direction.

5. The battery cell coating method according to claim 3, characterized in that, The adhesive tank includes a first adhesive tank disposed below the first coating device and a second adhesive tank disposed below the second coating device.

6. The battery cell coating method according to claim 1, characterized in that, The adsorption section includes several vacuum suction cups arranged at equal intervals, and the adsorption section can adsorb several battery cells; when the coating device is in working condition, each battery cell is adsorbed by one of the vacuum suction cups, and the vacuum suction cups are all located on one side of the thickness direction of the battery cell.

7. The battery cell coating method according to claim 6, characterized in that, The adsorption section further includes: A fixing part, wherein a plurality of the vacuum suction cups are disposed on the lower surface of the fixing part, and the upper surface of the fixing part also has a protrusion; A first connecting part is disposed above the fixed part. The lower part of the first connecting part is provided with a first sliding groove extending along a first direction. The protrusion is inserted into the first sliding groove, so that the fixed part can drive a plurality of vacuum suction cups to move horizontally along the first direction. The rotating part also includes a drive motor, the output shaft of which is connected to a rotating shaft. The rotating shaft rotates to drive the adsorption part to rotate. The drive motor is located above the first connecting part.

8. The battery cell coating method according to claim 7, characterized in that, The battery cell coating equipment further includes a first slide rail extending along a second direction, and the coating device further includes: The second connecting part is disposed above the first slide rail, and the second connecting part can slide horizontally along the first slide rail; A connecting column is fixedly connected to the second connecting part. The connecting column extends in the vertical direction and is provided with a second sliding groove extending in the vertical direction. The third connecting part is inserted into the second sliding groove of the connecting column. The third connecting part can slide in the up and down direction. The third connecting part and the rotating part are fixedly connected.

9. The battery cell coating method according to claim 1, characterized in that, Each of the coating devices also has a disengagement station, in which the battery cells adsorbed by the adsorption section of the coating device are disengaged from the adhesive tank when the coating device is in the disengagement station.

10. The battery cell coating method according to claim 1, characterized in that, The battery cell coating equipment further includes a conveying mechanism for conveying the battery cells, the conveying mechanism comprising: The basket feeding device is used to store the battery cells, and the basket feeding device can move horizontally in a second direction; A lifting device is located below the basket loading device; A correction and positioning device is disposed above the basket feeding device, and the coating device is used to adsorb the battery cell from the correction and positioning device.

11. The battery cell coating method according to claim 10, characterized in that, The battery cell coating equipment further includes a second slide rail extending along the second direction, and the basket feeding device includes: A feeding trough, in which the battery cells are placed, is located above the second slide rail and can slide horizontally along the second slide rail; The feeding trough includes a front baffle and a rear baffle arranged opposite to each other. Limiting blocks are respectively provided on the front side of the front baffle and the rear side of the rear baffle. A left baffle and a right baffle are also provided between the front baffle and the rear baffle. The left baffle and the right baffle are arranged opposite to each other. The left baffle is perpendicular to the front baffle and the rear baffle, and the right baffle is perpendicular to the front baffle and the rear baffle.

12. The battery cell coating method according to claim 10, characterized in that, The lifting device includes two lifting frames arranged side by side that can move in the vertical direction and lifting teeth arranged above the lifting frames. Several lifting teeth are arranged vertically and at equal intervals. The upper part of the lifting teeth is conical. When the lifting device is in operation, each lifting tooth extends into the gap between two adjacent battery cells.

13. The battery cell coating method according to claim 12, characterized in that, An intermediate tooth is provided between the two lifting frames, the height of which is less than the height of the lifting tooth; the intermediate tooth can move in the vertical direction.

14. The battery cell coating method according to claim 10, characterized in that, The correction and positioning device includes two transverse frames that can approach each other. Each transverse frame is provided with a plurality of transverse teeth arranged along a first direction and at equal intervals. The ends of the transverse teeth are tapered. When the correction and positioning device is in working state, the two transverse frames approach each other in the horizontal direction, and each transverse tooth extends into the gap between two adjacent battery cells.

15. The battery cell coating method according to claim 1, characterized in that, Step S3 includes: S31. The coating device disengages from the coating station. After the rotating part rotates 90 degrees, the coating device moves back to the coating station, so that the second side of the battery cell is immersed in the adhesive tank. The second side is the adjacent side of the first side.

16. The battery cell coating method according to claim 15, characterized in that, Step S4 includes: S41. After the rotating part of another coating device rotates 90 degrees, it adsorbs the vicinity of the first side of the battery cell, so that the third side of the battery cell is immersed in the adhesive tank, and the third side and the first side are two opposite sides. S42. Another coating device detaches from the coating station, and the rotating part of the other coating device rotates 90 degrees and moves back to the coating station, so that the fourth side of the battery cell is immersed in the adhesive tank, the fourth side and the second side being two opposite sides.

17. The battery cell coating method according to claim 1, characterized in that, Step S3 includes: S32. The coating device disengages from the coating station, and after the rotating part rotates 90 degrees, the coating device moves back to the coating station, so that the second side of the battery cell is immersed in the adhesive tank, and the second side is the adjacent side of the first side. S33. The coating device disengages from the coating station. After the rotating part rotates 180 degrees, the coating device moves back to the coating station, immersing the fourth side of the battery cell into the adhesive tank. The fourth side and the second side are two opposite sides.

18. The battery cell coating method according to claim 17, characterized in that, Step S4 includes: S43. Another part of the coating device adsorbs the first side of the battery cell near the first side, so that the third side of the battery cell is immersed in the adhesive tank, wherein the third side and the first side are two opposite sides.

19. The battery cell coating method according to any one of claims 1-18, characterized in that, Prior to step S1, the coating method further includes: SA. Place the battery cells in the basket feeding device, and move the basket feeding device horizontally along the second direction until it moves above the lifting device. SB, the lifting device pushes the battery cell out of the flower basket feeding device until the battery cell moves to the correction and positioning device; SC, the correction and positioning device corrects the position spacing of the battery cells.

Images