Battery slice production method and battery slice production apparatus

Abstract

This invention discloses a method and equipment for producing solar cells. The method includes the following steps: placing a solar cell on a carrier and moving the carrier under a visual inspection device, the visual inspection device including a first camera for capturing images of the solar cell and multiple second cameras; acquiring positional information of the solar cell using the first camera; determining regions of interest (ROIs) in local images of the solar cell captured by the multiple second cameras based on the positional information acquired by the first camera, and acquiring positional information of target features within each ROI; determining the deviation between the actual coordinates and preset coordinates of the solar cell based on the positional information of the multiple target features; and adjusting the solar cell to a preset position based on the deviation value using a correction device. This invention significantly reduces the computational load of image processing and improves the efficiency of visual inspection of solar cells while ensuring accurate acquisition of positional information of multiple target features on the solar cell.

Description

Technical Field

[0001] This invention relates to the field of solar cell manufacturing technology, and in particular to a solar cell manufacturing method and solar cell manufacturing equipment. Background Technology

[0002] Before printing and other processes on solar cells, the cells must be precisely placed in a preset position. In existing technology, a vision inspection device first detects the actual position of the solar cell, and then a correction device adjusts the cell from its actual position to the preset position. The vision inspection device includes multiple high-resolution cameras. After acquiring the positions of multiple mark points on the solar cell using these cameras, the actual coordinates of the solar cell can be calculated based on the positions of these mark points. However, searching for the positions of multiple mark points on the solar cell using only multiple high-resolution cameras is time-consuming and affects the production efficiency of the solar cells. Summary of the Invention

[0003] This invention provides a method and equipment for producing solar cells, aiming to solve the problem in the prior art where it takes a long time for a high-resolution camera to search for the positions of multiple Mark points on a solar cell.

[0004] To achieve the above objectives, the present invention provides a method for manufacturing battery cells, comprising the following steps:

[0005] The battery cell is placed on a carrier, and the carrier is moved under a visual inspection device, the visual inspection device including a first camera for photographing the battery cell and a plurality of second cameras, the field of view of the first camera being larger than the field of view of the second cameras; The first camera is used to obtain the position information of the battery cell. Based on the position information of the battery cell obtained by the first camera, regions of interest are determined in local images of the battery cell captured by multiple second cameras, and the position information of target features in each region of interest is obtained. Based on the location information of multiple target features, determine the deviation value between the actual coordinates of the battery cell and the preset coordinates; The vehicle is moved to a position below the correction device, which adjusts the battery cell to a preset position based on the deviation value.

[0006] As a further improvement of the present invention, the step of "obtaining the position information of the battery cell using the first camera" includes: The first camera captures images of the battery cell; The position of the outer contour of the battery cell in the image of the battery cell captured by the first camera is obtained, and the actual position of the battery cell is determined based on the position of the outer contour of the battery cell. The deviation data between the actual position and the taught position of the battery cell is determined, and the position information of the battery cell is the deviation data.

[0007] As a further improvement of the present invention, the battery cell manufacturing method further includes the following steps: The appearance of the battery cell is detected based on the image of the battery cell captured by the first camera.

[0008] As a further improvement of the present invention, the visual inspection device further includes a light source assembly, the light source assembly including a top plate, a first light-transmitting part disposed on the top plate and a plurality of second light-transmitting parts, the first camera and the plurality of second cameras are all disposed on one side in the thickness direction of the top plate, the first camera and the first light-transmitting part are correspondingly disposed, and the plurality of second cameras and the plurality of second light-transmitting parts are correspondingly disposed one-to-one. The light source assembly also includes a plurality of first light sources, which are located on the side of the top plate away from the plurality of second cameras and are respectively arranged around the plurality of second light-transmitting parts.

[0009] As a further improvement of the present invention, a plurality of the target features are arranged close to the edge of the battery cell, and a plurality of second cameras are arranged around the first camera.

[0010] As a further improvement of the present invention, the light source assembly further includes a plurality of second cylindrical portions connected to the top plate on the side opposite to the plurality of second cameras, the plurality of second cylindrical portions being arranged around the plurality of second light-transmitting portions respectively, and the plurality of second light sources being arranged around the plurality of second cylindrical portions respectively.

[0011] As a further improvement of the present invention, the light source assembly further includes a base plate disposed opposite to the top plate, a plurality of second cylinders being located between the top plate and the base plate, the base plate being provided with a third light-transmitting portion corresponding to the first light-transmitting portion and a plurality of fourth light-transmitting portions respectively corresponding to the plurality of second light-transmitting portions, and the base plate being a light-diffusing plate.

[0012] As a further improvement of the present invention, at least two of the battery cells are placed on the carrier, the first camera is used to acquire the position information of at least two of the battery cells, and a plurality of second cameras are used to photograph at least two of the battery cells respectively; In the battery cell production method, based on the position information of at least two battery cells acquired by the first camera, regions of interest are determined in the local images of at least two battery cells captured by multiple second cameras, and the position information of target features within each region of interest is obtained. Based on the location information of multiple target features, the deviation value between the actual coordinates and preset coordinates of at least two of the battery cells is determined, and the correction device adjusts at least two of the battery cells to the preset position based on the deviation value between the actual coordinates and preset coordinates of the at least two battery cells.

[0013] As a further improvement of the present invention, the battery cell is provided with four target features, which are arranged in an array along the length and width directions of the battery cell. One battery cell is configured to correspond to two second cameras. Of the two second cameras, one is used to acquire position information of two target features located on one side of the length direction of the battery cell, and the other is used to acquire position information of two target features located on the other side of the length direction of the battery cell. Alternatively, one of the battery cells may be configured in correspondence with four of the second cameras, each of the second cameras being used to acquire position information of a target feature on the battery cell.

[0014] As a further improvement of the present invention, the deviation value includes a first deviation value on the X-axis, a second deviation value on the Y-axis, and a third deviation value on the T-axis between the actual coordinates and the preset coordinates of the battery cell. The X-axis and Y-axis are perpendicular to each other, and the T-axis is a rotation axis around the intersection of the X-axis and the Y-axis. The correction device includes a suction cup mechanism for picking up battery cells and an adjustment mechanism for driving the suction cup mechanism to move along the X-axis, Y-axis, T-axis and Z-axis, wherein the Z-axis is perpendicular to the X-axis and Y-axis. The step "the correction device adjusts the battery cell to a preset position according to the deviation value" includes: The suction cup mechanism picks up the battery cell from the carrier; The adjustment mechanism drives the suction cup mechanism away from the carrier along the Z-axis; The adjustment mechanism adjusts the position of the battery cell according to the first deviation value, the second deviation value, and the third deviation value; The adjustment mechanism drives the suction cup mechanism to approach the carrier along the Z-axis to place the battery cell at a preset position on the carrier.

[0015] As a further improvement of the present invention, the correction device further includes a third camera disposed on the adjustment mechanism, the third camera being used to acquire images of the battery cells on the carrier, and the production method further includes the following steps: Unify the coordinate systems of the first camera, the second camera, and the third camera to the same coordinate system; Determine the relationship between the imaging changes of the third camera and the position adjustment of the battery cell by the adjustment mechanism.

[0016] As a further improvement of the present invention, the adjustment mechanism includes a Z-axis adjustment module, the Z-axis adjustment module comprising: substrate; A sliding base, which is movably connected to the substrate along the Z-axis, and a suction cup mechanism connected to the sliding base; Z-axis drive unit, the Z-axis drive unit is connected to the base plate, and the output end of the Z-axis drive unit is connected to a connecting block; A buffer assembly that connects the connecting block and the sliding seat.

[0017] As a further improvement of the present invention, the adjusting mechanism further includes: Y-axis adjustment module, the base plate is connected to the output terminal of the Y-axis adjustment module; The T-axis adjustment module, wherein the suction cup mechanism is connected to the output end of the T-axis adjustment module; An X-axis adjustment module is connected to the sliding base and the T-axis adjustment module for adjusting the position of the T-axis adjustment module relative to the sliding base along the X-axis.

[0018] As a further improvement of the present invention, the buffer assembly is a cylinder, the cylinder including a cylinder body and a telescopic rod that extends and retracts relative to the cylinder body along the Z-axis, one of the cylinder body and the telescopic rod being connected to a connecting block and the other being connected to the sliding seat.

[0019] The present invention also provides a battery cell production equipment, wherein the battery cell production equipment adopts the above-described battery cell production method.

[0020] Beneficial effects: The battery cell production method and equipment provided by the present invention utilize a first camera to first acquire the overall position information of the battery cell. Subsequently, when using a high-resolution second camera to acquire the position information of target features on the battery cell, the search range for target features can be narrowed. In this way, while ensuring that the position information of multiple target features on the battery cell can be accurately acquired, the computational load of image processing is significantly reduced, and the detection efficiency of visual inspection of battery cells is improved. Attached Figure Description

[0021] Figure 1 This is a front view of a battery cell manufacturing equipment provided in an embodiment of the present invention; Figure 2 for Figure 1 A three-dimensional structural diagram of the visual inspection device in the image; Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of the visual inspection device after the cover is removed; Figure 4 for Figure 3A three-dimensional structural diagram of the middle section; Figure 5 for Figure 1 A three-dimensional structural diagram of the correction device, carrier, and battery cells in the diagram; Figure 6 This is a top view of the battery cell; Figure 7 This is a schematic flowchart of a battery cell manufacturing method according to an embodiment of the present invention; Figure 8 for Figure 1 A three-dimensional structural diagram of the vehicle and battery cells in the diagram; Figure 9 for Figure 8 A front view of the vehicle in the image; Figure 10 for Figure 8 A magnified diagram of point A in the middle; Figure 11 for Figure 4 A three-dimensional structural diagram of the light source component in the image; Figure 12 for Figure 11 An exploded view of the light source components; Figure 13 This is a bottom view of the top plate and the first light source in one embodiment of the present invention; Figure 14-15 This is a schematic diagram showing the correspondence between the number of light source components and cameras and the number of battery cells in one embodiment of the present invention; Figure 16-17 This is a schematic diagram showing the correspondence between the number of light source components and cameras and the number of battery cells in another embodiment of the present invention; Figure 18-19 This is a schematic diagram showing the correspondence between the number of light source components and cameras and the number of battery cells in another embodiment of the present invention; Figure 20-21 This is a schematic diagram showing the correspondence between the number of light source components and cameras and the number of battery cells in another embodiment of the present invention; Figure 22-23 This is a schematic diagram showing the correspondence between the number of light source components and cameras and the number of battery cells in another embodiment of the present invention; Figure 24 This is a schematic diagram showing the arrangement of multiple solar cells; Figure 25 A flowchart illustrating the camera calibration process; Figure 26 This is a three-dimensional structural diagram of the correction device in one embodiment of the present invention; Figure 27 This is a front view of the correction device in one embodiment of the present invention.

[0022] In the picture: 100. Solar cell production equipment; 10. Carrier; 11. Base; 12. Paper roll; 13. Shaft; 13a. First shaft; 13b. Second shaft; 131. Gear section; 14. Braking mechanism; 141. Braking component; 141a. First braking component; 141b. Second braking component; 1411. Arc-shaped section; 1412. Flexible section; 142. Control structure; 1421. Linkage; 1421a. First link; 1421b. Second link; 1422. Telescopic drive component; 15. Damping gear; 16. First magnetic wheel; 20. Conveying device; 30. Visual inspection device; 31. First camera; 32. Second camera; 33. Light source assembly; 331. Top plate; 3311. First light-transmitting part; 3312. Second light-transmitting part; 332. First light source; 334. First cylindrical part; 335. Second cylindrical part; 336. Base plate; 3361. Third light-transmitting part; 3362. Fourth light-transmitting part; 337. Connecting frame; 34. First connecting bracket; 35. Protective cover; 36. Surface light source; 40. Correction device; 41. Suction cup mechanism; 42. Adjustment mechanism; 421. Z-axis adjustment module; 4211. Base plate; 4212. Sliding seat; 4213. Z-axis drive component; 42131. Connecting block; 4214. Buffer assembly; 4214a. Cylinder; 4214a1. Cylinder body; 4214a2. Telescopic rod; 422. Y-axis adjustment module; 423. T-axis adjustment module; 424. X-axis adjustment module; 425. Third camera; 426. Second connecting frame; 50. Printing apparatus; 200. Battery cell; 201. Target features. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any modifications to the mechanism, method, or function made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0024] The terms used herein, such as “up,” “down,” “left,” “right,” “front,” and “back,” indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures and should not be construed as limiting the claims. Furthermore, the descriptive term “horizontal” used herein is not entirely equivalent to being perpendicular to the direction of gravity and allows for a certain angle of inclination.

[0025] like Figure 1-6As shown, an embodiment of the present invention provides a battery cell production equipment 100, which includes a carrier 10, a vision inspection device 30, and a deviation correction device 40.

[0026] The carrier 10 is used to place the solar cells 200. The solar cell production equipment 100 may also include a conveying device 20 for driving the carrier 10 to move. The conveying device 20 can drive the carrier 10 to move along a preset path, and when the carrier 10 moves along the preset path, it can move from below the vision inspection device 30 to below the correction device 40.

[0027] The visual inspection device 30 includes a first camera 31 for capturing images of the battery cell 200 and a plurality of second cameras 32. The field of view of the first camera 31 is larger than that of the second cameras 32. This should be understood as the first camera 31 acquiring image information over a larger area, while the second cameras 32 acquire image information over a smaller area. It should be understood that although the second cameras 32 can only acquire image information over a smaller area, their resolution is higher than that of the first camera 31. When acquiring images of the battery cell 200 on the carrier 10, the first camera 31 is used to acquire an overall image of the battery cell 200, while the second cameras 32 are used to acquire images of local areas on the battery cell 200.

[0028] like Figure 7 As shown, the present invention also provides a method for manufacturing solar cells, which utilizes the aforementioned solar cell manufacturing equipment 100. The solar cell manufacturing method includes the following steps: Place the battery cell 200 on the carrier 10 and move the carrier 10 below the vision inspection device 30; The first camera 31 is used to acquire the position information of the battery cell 200. Based on the position information of the battery cell 200 acquired by the first camera 31, the regions of interest in the local images of the battery cell 200 captured by multiple second cameras 32 are determined, and the position information of the target feature 201 in each region of interest is acquired. Based on the position information of multiple target features 201, the deviation value between the actual coordinates and the preset coordinates of the battery cell 200 is determined; The carrier 10 is moved below the correction device 40, and the correction device 40 adjusts the battery cell 200 to a preset position according to the deviation value.

[0029] The solar cell 200 has multiple target features 201, which are arranged on the solar cell 200 according to a preset pattern. Knowing the positional information of the multiple target features 201 on the solar cell 200, the actual coordinates of the solar cell 200 can be calculated.

[0030] In the above steps, the first camera 31 first acquires the overall position information of the battery cell 200, and based on the overall position information of the battery cell 200, the distribution range of multiple target features 201 on the battery cell 200 is roughly determined. Then, based on the distribution range of the multiple target features 201, the region of interest (ROI) is determined for each second camera 32 during visual detection. Each second camera 32 can search for target features 201 only within the ROI to obtain the precise position information of each target feature 201.

[0031] After calculating the actual coordinates of the battery cell 200 based on the position information of multiple target features 201, the actual coordinates of the battery cell 200 are compared with preset coordinates to obtain the deviation value between the actual coordinates and the preset coordinates. Then, the correction device 40 can adjust the position of the battery cell 200 on the carrier 10 according to the above deviation value, and adjust the battery cell 200 to the preset position.

[0032] The cell production equipment 100 may also include a printing device 50. After the correction device 40 adjusts the cell 200 to a preset position, the conveying device 20 conveys the carrier 10 to the bottom of the printing device 50, and the printing device 50 can accurately print screens on the cell 200.

[0033] The battery cell production method provided by the present invention utilizes a first camera 31 to first acquire the overall position information of the battery cell 200. Subsequently, when using a high-resolution second camera 32 to acquire the position information of target features 201 on the battery cell 200, the search range for target features 201 can be narrowed. In this way, while ensuring that the position information of multiple target features 201 on the battery cell 200 can be accurately acquired, the computational load of image processing is significantly reduced, and the detection efficiency of visual inspection of the battery cell 200 is improved.

[0034] The above step "using the first camera 31 to acquire the position information of the battery cell 200" includes the following steps: The first camera 31 captures images of the battery cell 200; The position of the outer contour of the battery cell 200 is obtained in the image of the battery cell 200 captured by the first camera 31, and the actual position of the battery cell 200 is determined based on the position of the outer contour of the battery cell 200. Determine the deviation data between the actual position and the taught position of the battery cell 200. The position information of the battery cell 200 is the deviation data.

[0035] In the above steps, the actual position of the battery cell 200 is determined based on its outer contour. The calculation process is simple and can quickly and accurately obtain the position information of the battery cell 200.

[0036] The battery cell manufacturing method also includes the following steps: Based on the images of the battery cell 200 captured by the first camera 31, the appearance of the battery cell 200 is inspected. In this way, the images captured by the first camera 31 can not only be used to obtain the position information of the battery cell 200, but also to inspect the appearance of the battery cell 200, determine whether the battery cell 200 is damaged or contaminated, and improve the production efficiency of the battery cell 200.

[0037] The visual inspection device 30 includes a first connecting frame 34 and a protective cover 35 connected to the first connecting frame 34. The first connecting frame 34 is connected to the frame of the battery cell production equipment 100. A first camera 31 and a plurality of second cameras 32 are disposed inside the protective cover 35, which protects the first camera 31 and the plurality of second cameras 32.

[0038] like Figure 8-10 As shown, the carrier 10 specifically includes a base 11, a roll of paper 12, and two rotating shafts 13. The two rotating shafts 13 are respectively disposed on opposite sides of the base 11, and both shafts 13 are rotatable relative to the base 11 around their own axes. The roll of paper 12 is connected to the two rotating shafts 13, with a portion of the roll of paper 12 located between the two rotating shafts 13. When the carrier 10 carries the battery cell 200, the battery cell 200 is specifically placed on the portion of the roll of paper 12 located between the two rotating shafts 13, and the battery cell 200 does not directly contact the base 11. Rotation of one of the two rotating shafts 13 will drive the other rotating shaft 13 to rotate via the roll of paper 12.

[0039] At least one of the two rotating shafts 13 is connected to a first magnetic wheel 16. When the carrier 10 moves to a predetermined position, the first magnetic wheel 16 can dock with a second magnetic wheel in the cell production equipment 100. The second magnetic wheel can drive the rotating shaft 13 to rotate through the first magnetic wheel 16.

[0040] The phrase "the paper roll 12 is connected to two rotating shafts 13" should be understood as follows: a part of the paper roll 12 is wound around one of the two rotating shafts 13, and another part is wound around the other of the two rotating shafts 13. Under the action of the paper roll 12, when one of the two rotating shafts 13 rotates, the other will be driven to rotate. One of the two rotating shafts 13 is for "unwinding" and the other is for "rewinding".

[0041] The phrase "the paper roll 12 is connected to two rotating shafts 13" can also be understood as follows: the paper roll 12 is ring-shaped, the two rotating shafts 13 are located inside the ring-shaped paper roll 12, and the outer circumferential surfaces of the two rotating shafts 13 are in contact with the ring-shaped paper roll 12. Under the action of the paper roll 12, when one of the two rotating shafts 13 rotates, the other will be driven to rotate.

[0042] Assuming the two rotating shafts 13 are located on opposite sides of the substrate 11 along its length, the portion of the roll paper 12 located between the two rotating shafts 13 should cover at least one side of the substrate 11 along its thickness. When the battery cell 200 is unloaded, the rotating shafts 13 rotate, causing the roll paper 12 to move, allowing the battery cell 200 on the roll paper 12 to detach from the carrier 10. When the carrier 10 is used multiple times to transport the battery cell 200, the rotating shafts 13 move the roll paper 12, ensuring that each transported battery cell 200 can be placed on a new portion of the roll paper 12.

[0043] In this paper, the length direction of the substrate 11 is such that the substrate 11 is located at... Figure 9 In the state shown, the left and right directions are such that the thickness direction of the substrate 11 is such that the substrate 11 is in the position shown. Figure 9 The up and down directions in the shown state.

[0044] The vehicle 10 also includes a braking mechanism 14. The braking mechanism 14 is disposed between the base 11 and at least one rotating shaft 13, and is capable of applying a braking force to the rotation of at least one rotating shaft 13, preventing the at least one rotating shaft 13 from rotating relative to the base 11. It is understood that if one of the two rotating shafts 13 is unable to rotate relative to the base 11, the rotation of the other will also be restricted.

[0045] The braking mechanism 14 has a braking state and a released state. In the braking state, the braking mechanism 14 contacts at least one rotating shaft 13 to apply a braking force to the rotation of at least one rotating shaft 13, making it difficult for the rotating shaft 13 to rotate relative to the base 11. In the released state, the braking mechanism 14 disengages from the rotating shaft 13, and at this time, the braking mechanism 14 does not apply a braking force to the rotating shaft 13.

[0046] In the carrier 10 provided in this embodiment, the braking mechanism 14 can be in a braking state when needed to restrict the rotation of the rotating shaft 13 relative to the base 11, so that the position of the roll paper 12 connected to the two rotating shafts 13 will not change arbitrarily. When the battery cell 200 is placed on the roll paper 12, its position relative to the base 11 can remain stable, so that the battery cell production equipment 100 can accurately process the battery cell 200.

[0047] The braking mechanism 14 includes a braking element 141 and a control structure 142. The braking element 141 is disposed near the rotating shaft 13 and is movable relative to the base 11 in the radial direction of the rotating shaft 13. The control structure 142 is used to control the movement of the braking element 141 relative to the base 11 in the radial direction of the rotating shaft 13.

[0048] When the braking mechanism 14 is in the braking state, the braking element 141 abuts against the rotating shaft 13 in the radial direction. The friction between the braking element 141 and the rotating shaft 13 is relatively large, making it difficult for the rotating shaft 13 to rotate. When the braking mechanism 14 is in the released state, the braking element 141 disengages from the rotating shaft 13, at which point the rotating shaft 13 can rotate freely.

[0049] In this embodiment, the control structure 142 includes a connecting rod 1421 and a telescopic drive member 1422. The middle part of the connecting rod 1421 is rotatably connected to the base 11, and the brake member 141 is rotatably connected to one end of the connecting rod 1421. The telescopic drive member 1422 connects the base 11 and the connecting rod 1421 to drive the connecting rod 1421 to rotate relative to the base 11. The telescopic drive member 1422 drives the connecting rod 1421 and its connection part to move linearly, which can cause the connecting rod 1421 to rotate. The rotation of the connecting rod 1421 can drive the brake member 141 to move in the radial direction along the rotating shaft 13.

[0050] The connecting rod 1421 has a first end and a second end, which are located at opposite ends in the extending direction of the connecting rod 1421. The brake 141 is rotatably connected to the first end, and the second end is connected to the telescopic drive 1422.

[0051] As described above, the middle part of the connecting rod 1421 is rotatably connected to the base 11, and it rotates about the rotation axis relative to the base 11. The distance from the first end to the rotation axis is less than the distance from the second end to the rotation axis, so that the telescopic drive member 1422 can reduce the effort required to drive the brake member 141 to move through the connecting rod 1421.

[0052] For ease of explanation, the two rotating shafts 13 are designated as the first rotating shaft 13a and the second rotating shaft 13b. The braking element 141 includes a first braking element 141a and a second braking element 141b. The first braking element 141a is positioned near the first rotating shaft 13a, and the second braking element 141b is positioned near the second rotating shaft 13b. The connecting rod 1421 includes a first connecting rod 1421a and a second connecting rod 1421b. Both the first connecting rod 1421a and the second connecting rod 1421b have a first end and a second end. The first braking element 141a is rotatably connected to the first end of the first connecting rod 1421a, and the second braking element 141b is rotatably connected to the first end of the second connecting rod 1421b. The second ends of both the first connecting rod 1421a and the second connecting rod 1421b are connected to the telescopic drive element 1422.

[0053] With the above configuration, the first braking element 141a and the second braking element 141b can apply braking to the first rotating shaft 13a and the second rotating shaft 13b respectively. When the braking mechanism 14 is in the braking state, the position of the paper roll 12 is more stable. The first connecting rod 1421a and the second connecting rod 1421b are both driven by the telescopic drive element 1422, and the structure of the braking mechanism 14 is relatively compact.

[0054] The braking component 141 includes an arcuate portion 1411 surrounding the rotating shaft 13 and a flexible portion 1412 disposed on the side of the arcuate portion 1411 near the rotating shaft 13. The shape of the flexible portion 1412 is similar to that of the arcuate portion 1411, and is also generally arcuate. The flexible portion 1412 can conform to the rotating shaft 13, ensuring that a large frictional force can be generated between the rotating shaft 13 and the braking component 141, and protecting the rotating shaft 13 from being crushed by the braking component 141.

[0055] The vehicle 10 also includes a damping element, which is located between the base 11 and the shaft 13. The damping element can apply resistance to the rotation of the shaft 13 and can quickly stop the rotation of the shaft 13, thus playing an auxiliary braking role.

[0056] The rotating shaft 13 has a gear portion 131, and the damping element is a damping gear 15 that meshes with the gear portion 131. The damping gear 15 is rotatably connected to the base 11. The damping gear 15 can apply resistance to the rotation of the rotating shaft 13 through the gear portion 131.

[0057] To determine the preset coordinates of solar cell 200, the solar cell manufacturing method also includes the following steps: A screen is printed on a portion of the roll paper 12 located between two rotating shafts 13. The position of the screen corresponds to a preset position of the battery cell 200. The screen has multiple identification features corresponding to multiple target features 201 on the battery cell 200. Multiple second cameras 32 are used to acquire position information of multiple recognition features on the screen; Based on the positional information of multiple identification features on the screen, the preset coordinates of the battery cell 200 are determined.

[0058] The aforementioned target feature 201 is a Mark point on the battery cell 200, and correspondingly, the aforementioned identification feature is a Mark point on the screen printing plate.

[0059] The screen printing on the roll 12 is precisely positioned to determine the preset coordinates of the solar cell 200, which is accurate, reliable, and cost-effective.

[0060] Understandably, the teaching position described above can also be determined by taking an overall image of the screen using the first camera 31.

[0061] like Figure 3-4 As shown in Figures 11-13, the visual inspection device 30 also includes a light source assembly 33. The light source assembly 33 is used to illuminate the battery cell 200 so that the first camera 31 and the second camera 32 can clearly acquire image information of the battery cell 200.

[0062] The light source assembly 33 includes a top plate 331, a first light-transmitting portion 3311 disposed on the top plate 331, and a plurality of second light-transmitting portions 3312. A first camera 31 and a plurality of second cameras 32 are both disposed on one side of the top plate 331 in the thickness direction. The first camera 31 and the first light-transmitting portion 3311 are correspondingly arranged, and the first camera 31 can photograph the battery cell 200 through the first light-transmitting portion 3311. The plurality of second cameras 32 and the plurality of second light-transmitting portions 3312 are correspondingly arranged one-to-one, and the plurality of second cameras 32 can photograph the battery cell 200 respectively through the plurality of second light-transmitting portions 3312.

[0063] The light source assembly 33 also includes a plurality of first light sources 332, which are located on the side of the top plate 331 away from the plurality of second cameras 32, and are respectively arranged around the plurality of second light-transmitting portions 3312. When the first light sources 332 arranged around the second light-transmitting portions 3312 emit light, they can accurately illuminate the shooting area of ​​the corresponding second camera 32, enabling the second camera 32 to accurately acquire the image of the battery cell 200. Furthermore, the fact that the plurality of first light sources 332 illuminate a larger area of ​​the battery cell 200 is beneficial for the first camera 31 to accurately acquire the overall image of the battery cell 200.

[0064] The light source assembly 33 may also include a second light source (not shown in the figure), which is located on the side of the top plate 331 opposite to the first camera 31, and is arranged around the first light-transmitting portion 3311. The second light source can further illuminate the battery cell 200, which helps the first camera 31 and the second camera 32 to accurately acquire the overall image of the battery cell 200.

[0065] The first light-transmitting part 3311 and the second light-transmitting part 3312 may be through holes opened in the top plate 331, or transparent structures on the top plate 331.

[0066] Multiple target features 201 on the battery cell 200 are positioned near the edge of the battery cell 200. Multiple second cameras 32 are positioned around the first camera 31, with the first camera 31 located in the center and capable of capturing an overall image of the battery cell 200, and the multiple second cameras 32 located at the edges and capable of capturing images of the multiple target features 201 on the battery cell 200 respectively.

[0067] Multiple target features 201 on the battery cell 200 are close to the edge of the battery cell 200, and the areas on the battery cell 200 captured by multiple second cameras 32 are also close to the edge of the battery cell 200. Thus, the areas on the battery cell 200 illuminated by multiple first light sources 332 are the edge areas of the battery cell 200. In this way, while the second cameras 32 can clearly acquire images of the corresponding parts on the battery cell 200, the first cameras 31 can accurately acquire images of the edge contours of the battery cell 200.

[0068] The light source assembly 33 may include a first cylindrical portion 334. The first cylindrical portion 334 is connected to the top plate 331 on the side opposite to the first camera 31. The first cylindrical portion 334 is disposed around the first light-transmitting portion 3311, and a second light source is disposed around the first cylindrical portion 334, with the first cylindrical portion 334 positioned between the first light-transmitting portion 3311 and the second light source. The first cylindrical portion 334 can prevent the second light source from illuminating the first camera 31, thus ensuring the imaging quality of the first camera 31.

[0069] The light source assembly 33 also includes a plurality of second cylindrical portions 335. The plurality of second cylindrical portions 335 are connected to the top plate 331 on the side opposite to the plurality of second cameras 32. The plurality of second cylindrical portions 335 are respectively arranged around the plurality of second light-transmitting portions 3312, and the plurality of first light sources 332 are respectively arranged around the plurality of second cylindrical portions 335, with the second cylindrical portions 335 positioned between the second light-transmitting portions 3312 and the first light sources 332. The second cylindrical portions 335 prevent the first light sources 332 from illuminating their corresponding second cameras 32, thus ensuring the imaging quality of the second cameras 32.

[0070] The light source assembly 33 also includes a base plate 336 disposed opposite to the top plate 331. A first cylindrical portion 334 and a second cylindrical portion 335 are located between the top plate 331 and the base plate 336. The base plate 336 is provided with a third light-transmitting portion 3361 and a plurality of fourth light-transmitting portions 3362. The first light-transmitting portion 3311 and the third light-transmitting portion 3361 correspond to each other, allowing the first camera 31 to photograph the battery cell 200 on the carrier 10 through the first light-transmitting portion 3311 and the third light-transmitting portion 3361. A plurality of second light-transmitting portions 3312 and a plurality of fourth light-transmitting portions 3362 correspond one-to-one, allowing the second camera 32 to photograph the battery cell 200 on the carrier 10 through the third light-transmitting portion 3361 and the fourth light-transmitting portion 3362. The visual inspection device 30 also includes a connecting frame 337 connecting the top plate 331 and the base plate 336.

[0071] The base plate 336 is a light-diffusing plate. After the light emitted by the multiple first light sources 332 and the second light source is incident on the light-diffusing plate, it is reflected and refracted multiple times by the internal structure of the light-diffusing plate, so that the solar cell 200 can be evenly illuminated. In this way, the first camera 31 and the second camera 32 can acquire images of the solar cell 200 more accurately and clearly.

[0072] The first light source 332 and the second light source mentioned above can be multiple LED beads arranged in a ring.

[0073] To further ensure that the first camera 31 and the second camera 32 can acquire clear images of the battery cell 200, the visual inspection device 30 may also include two surface light sources 36, which are arranged opposite to each other and can jointly illuminate the battery cell 200 on the carrier 10.

[0074] At least two battery cells 200 can be placed on the vehicle 10. A first camera 31 is capable of acquiring the position information of at least two battery cells 200, that is, the first camera 31 is capable of capturing an overall image of at least two battery cells 200 on the vehicle 10. A plurality of second cameras 32 are used to capture images of at least two battery cells 200 respectively.

[0075] Specifically, in the battery cell production method, based on the position information of at least two battery cells 200 acquired by the first camera 31, the region of interest in the local images of at least two battery cells 200 captured by multiple second cameras 32 is determined, and the position information of the target feature 201 in each region of interest is acquired.

[0076] Based on the position information of multiple target features 201, the deviation value between the actual coordinates and preset coordinates of at least two battery cells 200 can be determined. The correction device 40 can adjust at least two battery cells 200 to a preset position based on the deviation value between the actual coordinates and preset coordinates of the at least two battery cells 200.

[0077] Using the above method, the visual inspection device 30 can obtain the deviation value between the actual coordinates and the preset coordinates of at least two battery cells 200, and the subsequent correction device 40 can adjust at least two battery cells 200 to the preset position, resulting in high processing efficiency of the battery cells 200.

[0078] The number of battery cells 200 placed on the carrier 10 can be 2, 3, 4, or 5. When different battery cells 200 are placed, the number of second cameras 32 in the visual inspection device 30 and the number of second light-transmitting parts 3312 and fourth light-transmitting parts 3362 in the light source assembly 33 should be changed accordingly.

[0079] like Figure 6 As shown, four target features 201 are specifically provided on the solar cell 200. These four target features 201 are arranged in an array along the length and width directions of the solar cell 200. Specifically, two target features 201 arranged along the width direction are provided on one side of the length direction of the solar cell 200, and two target features 201 arranged along the width direction are provided on the other side of the length direction of the solar cell 200. The four target features 201 can be approximately located at the four corners of the solar cell 200.

[0080] like Figure 4 , 11As shown in Figures 14-18, in some embodiments of the invention, one battery cell 200 may correspond to two second cameras 32. One of the two second cameras 32 is used to acquire position information of two target features 201 located on one side of the length direction of the battery cell 200, and the other is used to acquire position information of two target features 201 located on the other side of the length direction of the battery cell 200. The number of second cameras 32 is twice the number of battery cells 200 on the carrier 10.

[0081] like Figure 4 , 11 As shown, the vehicle 10 is equipped with three battery cells 200, and the number of second cameras 32 is six. Figure 14-15 As shown, the vehicle 10 is equipped with four battery cells 200, and the number of second cameras 32 is eight. Figure 16-17 As shown, the carrier 10 is equipped with five battery cells 200, and the number of second cameras 32 is ten. Figure 18-19 As shown, the vehicle 10 is equipped with six battery cells 200 and twelve second cameras 32.

[0082] like Figure 20-23 As shown, in some other embodiments of the present invention, the following configuration may also be made: one battery cell 200 is correspondingly configured with four second cameras 32, each second camera 32 being used to acquire position information of a target feature 201 on the battery cell 200. The number of second cameras 32 is four times the number of battery cells 200 on the carrier 10.

[0083] like Figure 20-21 As shown, the vehicle 10 is equipped with three battery cells 200, and the number of second cameras 32 is twelve. Figure 22-23 As shown, the vehicle 10 is equipped with four battery cells 200 and sixteen second cameras 32.

[0084] like Figure 24 As shown, in another embodiment of the invention, the following setting can also be made: if the number of battery cells 200 is N, then the number of cameras is 2. (N+1) units. For example, when the vehicle 10 has two battery cells 200, the number of second cameras 32 is six; when the vehicle 10 has three battery cells 200, the number of second cameras 32 is eight. Figure 24 In the diagram, the dashed box represents the field of view of the second camera 32.

[0085] With the above setup, for multiple target features 201 of at least two battery cells 200, along the arrangement direction of at least two battery cells 200, the position information of the four outermost target features 201 is acquired by four second cameras 32 respectively, and the position information of two adjacent target features 201 is acquired by one second camera 32.

[0086] like Figure 4 , 26 As shown in Figure -27, the deviation values ​​include a first deviation value on the X-axis, a second deviation value on the Y-axis, and a third deviation value on the T-axis between the actual coordinates and preset coordinates of the battery cell 200. The X-axis and Y-axis are perpendicular, and the T-axis is a rotation axis around the intersection of the X-axis and Y-axis. The alignment device 40 includes a suction cup mechanism 41 and an adjustment mechanism 42. The suction cup mechanism 41 is used to pick up the battery cell 200, and the adjustment mechanism 42 is used to drive the suction cup mechanism 41 to move along the X-axis, Y-axis, T-axis, and Z-axis. The Z-axis is perpendicular to the X-axis and Y-axis.

[0087] Figure 5 The arrows in the diagram illustrate the X-axis, Y-axis, Z-axis, and T-axis mentioned above. The Z-axis direction can be understood as the up-down direction.

[0088] The above step "the correction device 40 adjusts the battery cell 200 to the preset position according to the deviation value" includes the following steps: The suction cup mechanism 41 picks up the battery cell 200 from the carrier 10; Adjustment mechanism 42 drives suction cup mechanism 41 away from carrier 10 along Z-axis; The adjustment mechanism 42 adjusts the position of the battery cell 200 according to the first deviation value, the second deviation value, and the third deviation value; The adjustment mechanism 42 drives the suction cup mechanism 41 to approach the carrier 10 along the Z-axis to place the battery cell 200 at a preset position on the carrier 10.

[0089] In the above steps, after the suction cup mechanism 41 picks up the battery cell 200, the adjustment mechanism 42 drives the suction cup mechanism 41 away from the carrier 10 along the Z-axis, which can make the battery cell 200 detach from the carrier 10. After that, the adjustment mechanism 42 can adjust the battery cell 200 in multiple directions along the Z-axis, Y-axis and T-axis to accurately adjust the battery cell 200 to the preset position.

[0090] The correction device 40 also includes a third camera 425 disposed on the adjustment mechanism 42. The third camera 425 is capable of capturing images of the battery cell 200 located on the carrier 10 to obtain images of the battery cell 200 on the carrier 10. The battery cell manufacturing method further includes the following steps: The coordinate systems of the first camera 31, the second camera 32, and the third camera 425 are unified to the same coordinate system; Determine the relationship between the imaging changes of the third camera 425 and the position adjustment of the battery cell 200 by the adjustment mechanism 42.

[0091] In the above steps, the coordinate systems of the first camera 31, the second camera 32, and the third camera 425 are unified to the same coordinate system. That is, the transformation relationship between the coordinate systems of the first camera 31, the second camera 32, and the third camera 425 and a unified coordinate system is established. In this way, the image information acquired by the first camera 31, the second camera 32, and the third camera 425 can be expressed and analyzed within the framework of the same coordinate system.

[0092] The above step, "determining the relationship between the imaging changes of the third camera 425 and the position adjustment of the battery cell 200 by the adjustment mechanism 42," should be understood as follows: If the adjustment mechanism 42 adjusts the position of the battery cell 200 on the carrier 10, the image of the battery cell 200 captured by the third camera 425 will change accordingly. After the adjustment mechanism 42 drives the battery cell 200 to move a certain distance along the X-axis, Y-axis, and T-axis, the image of the battery cell 200 captured by the third camera 425 is compared with the image captured before the battery cell 200 moved. This allows us to determine the correspondence between the distance the adjustment mechanism 42 drives the battery cell 200 to move or the angle of rotation and the imaging changes of the battery cell 200. After determining the relationship between the pixel values ​​of the battery cell 200 image and the driving distance or angle of the adjustment mechanism 42, the adjustment amount required by the adjustment mechanism 42 can be accurately calculated based on the image data of the battery cell 200 during subsequent correction processes.

[0093] like Figure 25 As shown, when performing the step "aligning the coordinate systems of the first camera 31, the second camera 32, and the third camera 425 to the same coordinate system", distortion calibration, checkerboard calibration, mapping calibration, N-point calibration, and teaching calibration can be performed on the first camera 31, the second camera 32, and the third camera 425. During the calibration process, if the calibration error is too large or the image is blurry, the calibration plate should be cleaned or the light source checked before re-calibrating.

[0094] The adjustment mechanism 42 includes a Z-axis adjustment module 421. The Z-axis adjustment module 421 includes a base plate 4211, a sliding seat 4212, a Z-axis drive unit 4213, and a buffer assembly 4214. The sliding seat 4212 is movably connected to the base plate 4211 along the Z-axis and can slide relative to the base plate 4211 along the Z-axis. A suction cup mechanism 41 is connected to the sliding seat 4212 and can move with the sliding seat 4212. The Z-axis drive unit 4213 is connected to the base plate 4211.

[0095] The Z-axis drive unit 4213 has a connecting block 42131 connected to its conveying end. The buffer assembly 4214 connects the connecting block 42131 and the sliding seat 4212.

[0096] With the above configuration, the Z-axis drive 4213 can drive the sliding seat 4212 to move upward along the Z-axis via the buffer assembly 4214, and the suction cup mechanism 41 connected to the sliding seat 4212 can follow the movement. When the suction cup mechanism 41 picks up the battery cell 200 downward, the reaction force of the battery cell 200 on the suction cup mechanism 41 can cause the sliding seat 4212 to move upward relative to the substrate 4211. At this time, the buffer assembly 4214 can slow down the upward movement speed of the sliding seat 4212 to a certain extent. While ensuring that the suction cup mechanism 41 can move upward and avoid damaging the battery cell 200, the suction cup mechanism 41 can apply appropriate pressure to the battery cell 200 to ensure that the suction cup mechanism 41 can successfully pick up the battery cell 200.

[0097] The adjustment mechanism 42 also includes a Y-axis adjustment module 422, a T-axis adjustment module 423, and an X-axis adjustment module 424. The base plate 4211 is connected to the output end of the Y-axis adjustment module 422, the suction cup mechanism 41 is connected to the output end of the T-axis adjustment module 423, and the X-axis adjustment module 424 is connected to the sliding base 4212 and the T-axis adjustment module 423.

[0098] With the above configuration, after the suction cup mechanism 41 picks up the battery cell 200, the Y-axis adjustment module 422 drives the substrate 4211 to move along the Y-axis, which can adjust the position of the battery cell 200 on the Y-axis. The T-axis adjustment module 423 drives the suction cup mechanism 41 to move along the T-axis, which can adjust the position of the battery cell 200 on the T-axis. The X-axis adjustment module 424 drives the T-axis adjustment module 423 to move relative to the sliding seat 4212 along the X-axis, which can adjust the position of the battery cell 200 on the X-axis.

[0099] It is understood that in other embodiments of the present invention, the X-axis adjustment module 424, Y-axis adjustment module 422, Z-axis adjustment module 421 and T-axis adjustment module 423 may be combined in other ways, as long as the adjustment mechanism 42 can drive the suction cup mechanism 41 to move along the X-axis, Y-axis, Z-axis and T-axis.

[0100] The correction device 40 may also include a second connecting frame 426, through which the Y-axis adjustment module 422 is connected to the frame of the cell production equipment 100.

[0101] In one embodiment of the present invention, the buffer assembly 4214 is a cylinder 4214a. The cylinder 4214a includes a cylinder body 4214a1 and a telescopic rod 4214a2 that extends and retracts relative to the cylinder body 4214a1 along the Z-axis. One of the cylinder body 4214a1 and the telescopic rod 4214a2 is connected to a connecting block, and the other is connected to a sliding seat 4212.

[0102] Z-axis drive 4213 can drive sliding seat 4212 to move upward along the Z-axis via cylinder 4214a. When suction cup mechanism 41 contacts battery cell 200 downward to pick up battery cell 200, the upward force generated by battery cell 200 on suction cup mechanism 41 will drive telescopic rod 4214a2 to retract into cylinder 4214a1. However, due to the gas pressure in cylinder 4214a1, the retraction of telescopic rod 4214a2 into cylinder 4214a1 has a large resistance. Therefore, telescopic rod 4214a2 can slow down the upward movement speed of sliding seat 4212 to a certain extent.

[0103] The sliding seat 4212 has a first limiting portion and a second limiting portion located on both sides of the connecting block 42131 in the Z-axis direction. Under the restriction of the first limiting portion and the second limiting portion, the range of movement of the sliding seat 4212 relative to the connecting block 42131 along the Z-axis can be limited.

[0104] In another embodiment of the present invention, the buffer assembly 4214 may also be an elastic structure disposed between the connecting block and the sliding seat 4212. The elastic structure is elastically extended and retracted along the Z-axis, and its two ends in the elastic extension and retraction direction can respectively abut against the connecting block and the sliding seat 4212.

[0105] When the suction cup mechanism 41 picks up the battery cell 200 downwards, the reaction force of the battery cell 200 on the suction cup mechanism 41 can cause the sliding seat 4212 to move upwards relative to the substrate 4211. At this time, the elastic structure is compressed, which can slow down the upward movement speed of the sliding seat 4212 to a certain extent. While ensuring that the suction cup mechanism 41 can move upwards and avoid damaging the battery cell 200, the suction cup mechanism 41 can apply appropriate pressure to the battery cell 200 to ensure that the suction cup mechanism 41 can successfully pick up the battery cell 200.

[0106] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0107] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A method for producing solar cells, characterized in that, Includes the following steps: The battery cell is placed on a carrier, and the carrier is moved under a visual inspection device, the visual inspection device including a first camera for photographing the battery cell and a plurality of second cameras, the field of view of the first camera being larger than the field of view of the second cameras; The first camera is used to obtain the position information of the battery cell. Based on the position information of the battery cell obtained by the first camera, regions of interest are determined in local images of the battery cell captured by multiple second cameras, and the position information of target features in each region of interest is obtained. Based on the location information of multiple target features, determine the deviation value between the actual coordinates of the battery cell and the preset coordinates; The vehicle is moved to a position below the correction device, which adjusts the battery cell to a preset position based on the deviation value.

2. The method for producing battery cells according to claim 1, characterized in that, The step of "using the first camera to obtain the position information of the battery cell" includes: The first camera captures images of the battery cell; The position of the outer contour of the battery cell in the image of the battery cell captured by the first camera is obtained, and the actual position of the battery cell is determined based on the position of the outer contour of the battery cell. The deviation data between the actual position and the taught position of the battery cell is determined, and the position information of the battery cell is the deviation data.

3. The method for producing battery cells according to claim 2, characterized in that, The battery cell manufacturing method further includes the following steps: The appearance of the battery cell is detected based on the image of the battery cell captured by the first camera.

4. The method for producing battery cells according to claim 1, characterized in that, The visual inspection device further includes a light source assembly, which includes a top plate, a first light-transmitting part disposed on the top plate, and a plurality of second light-transmitting parts. The first camera and the plurality of second cameras are all disposed on one side of the thickness direction of the top plate. The first camera and the first light-transmitting part are correspondingly arranged, and the plurality of second cameras and the plurality of second light-transmitting parts are correspondingly arranged one-to-one. The light source assembly also includes a plurality of first light sources, which are located on the side of the top plate away from the plurality of second cameras and are respectively arranged around the plurality of second light-transmitting parts.

5. The method for producing battery cells according to claim 4, characterized in that, Multiple target features are positioned close to the edge of the battery cell, and multiple second cameras are positioned around the first camera.

6. The method for producing battery cells according to claim 4 or 5, characterized in that, The light source assembly also includes a plurality of second cylindrical portions connected to the top plate on the side opposite to the plurality of second cameras. The plurality of second cylindrical portions are respectively arranged around the plurality of second light-transmitting portions, and the plurality of second light sources are respectively arranged around the plurality of second cylindrical portions.

7. The method for producing battery cells according to claim 6, characterized in that, The light source assembly also includes a base plate disposed opposite to the top plate, a plurality of second cylinders being located between the top plate and the base plate, the base plate being provided with a third light-transmitting part corresponding to the first light-transmitting part and a plurality of fourth light-transmitting parts respectively corresponding to the plurality of second light-transmitting parts, and the base plate being a light-diffusing plate.

8. The method for producing battery cells according to claim 5, characterized in that, At least two of the battery cells are placed on the vehicle. The first camera is used to acquire the position information of the at least two battery cells, and multiple second cameras are used to photograph the at least two battery cells respectively. In the battery cell production method, based on the position information of at least two battery cells acquired by the first camera, regions of interest are determined in the local images of at least two battery cells captured by multiple second cameras, and the position information of target features within each region of interest is obtained. Based on the location information of multiple target features, the deviation value between the actual coordinates and preset coordinates of at least two of the battery cells is determined, and the correction device adjusts at least two of the battery cells to the preset position based on the deviation value between the actual coordinates and preset coordinates of the at least two battery cells.

9. The method for producing battery cells according to claim 8, characterized in that, The battery cell has four target features, which are arranged in an array along the length and width of the battery cell. One battery cell is configured to correspond to two second cameras. Of the two second cameras, one is used to acquire position information of two target features located on one side of the length direction of the battery cell, and the other is used to acquire position information of two target features located on the other side of the length direction of the battery cell. Alternatively, one of the battery cells may be configured in correspondence with four of the second cameras, each of the second cameras being used to acquire position information of a target feature on the battery cell.

10. The method for producing battery cells according to claim 1, characterized in that, The deviation values ​​include a first deviation value on the X-axis, a second deviation value on the Y-axis, and a third deviation value on the T-axis between the actual coordinates and preset coordinates of the battery cell. The X-axis and Y-axis are perpendicular, and the T-axis is a rotation axis around the intersection of the X-axis and Y-axis. The correction device includes a suction cup mechanism for picking up battery cells and an adjustment mechanism for driving the suction cup mechanism to move along the X-axis, Y-axis, T-axis and Z-axis, wherein the Z-axis is perpendicular to the X-axis and Y-axis. The step "the correction device adjusts the battery cell to a preset position according to the deviation value" includes: The suction cup mechanism picks up the battery cell from the carrier; The adjustment mechanism drives the suction cup mechanism away from the carrier along the Z-axis; The adjustment mechanism adjusts the position of the battery cell according to the first deviation value, the second deviation value, and the third deviation value; The adjustment mechanism drives the suction cup mechanism to approach the carrier along the Z-axis to place the battery cell at a preset position on the carrier.

11. The production method according to claim 10, characterized in that, The correction device further includes a third camera disposed on the adjustment mechanism, the third camera being used to acquire images of the battery cells on the carrier, and the production method further includes the following steps: Unify the coordinate systems of the first camera, the second camera, and the third camera to the same coordinate system; Determine the relationship between the imaging changes of the third camera and the position adjustment of the battery cell by the adjustment mechanism.

12. The production method according to claim 10, characterized in that, The adjustment mechanism includes a Z-axis adjustment module, which includes: substrate; A sliding base, which is movably connected to the substrate along the Z-axis, and a suction cup mechanism connected to the sliding base; Z-axis drive unit, the Z-axis drive unit is connected to the base plate, and the output end of the Z-axis drive unit is connected to a connecting block; A buffer assembly that connects the connecting block and the sliding seat.

13. The production method according to claim 12, characterized in that, The adjustment mechanism further includes: Y-axis adjustment module, the base plate is connected to the output terminal of the Y-axis adjustment module; The T-axis adjustment module, wherein the suction cup mechanism is connected to the output end of the T-axis adjustment module; An X-axis adjustment module is connected to the sliding base and the T-axis adjustment module for adjusting the position of the T-axis adjustment module relative to the sliding base along the X-axis.

14. The production method according to claim 12, characterized in that, The buffer assembly is a cylinder, which includes a cylinder body and a telescopic rod that extends and retracts relative to the cylinder body along the Z-axis. One of the cylinder body and the telescopic rod is connected to a connecting block, and the other is connected to the sliding seat.

15. A battery cell manufacturing equipment, characterized in that, The battery cell production equipment adopts the battery cell production method described in any one of claims 1-14.

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