Automatic cylindrical lithium battery straightening machine

Abstract

The utility model relates to the technical field of lithium battery production, and concretely relates to cylindrical lithium battery automatic correction machine, include: conveying part, the upper part forms the conveying area, the conveying part is used for conveying the tray that holds the battery and is placed in the conveying area along the first direction, guide rail, set up in the upper part of conveying area, the guide rail extends along the second direction, be equipped with the sliding table on the guide rail, the sliding table can move along the length direction of guide rail. The utility model obtains the battery electrode angle - corrects every battery angle two steps through the photograph, makes the multiple batteries of angle disorder in the support plate correct for the angle of all batteries is consistent, the sliding table goes back and forth once above the support plate, obtains all battery electrode angle information through the image acquisition device, then carries out one angle correction to all batteries by the correction device row by row, and the degree of automation is high, and the correction is accurate, can satisfy the testing demand before DCIR test.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lithium battery production, and particularly relates to a cylindrical lithium battery automatic correcting machine. BACKGROUND

[0002] When the cylindrical lithium battery such as 4680 battery cell is welded, the positive electrode is a fan-shaped area, and the angle of the thick fan-shaped area is random. When DCIR (Direct Current Internal Resistance) testing is performed, the probe must be pressed in the fan-shaped area due to the accuracy requirement, so that the data will be accurate. The probe is a fixed structure, so the angle of the fan-shaped area must be consistent before the battery cell enters the DCIR testing.

[0003] In different production processes, multiple cylindrical batteries are usually placed on a tray for transfer. The fan-shaped area of the positive electrode of each cylindrical battery on the tray is not consistent in angle. Therefore, when the tray is used as a transfer object, how to ensure that the fan-shaped area of the positive electrode of all cylindrical batteries on the tray is consistent is a problem to be solved. SUMMARY

[0004] In view of the technical problems existing in the production of cylindrical lithium batteries in the prior art, the first aspect of the utility model provides a cylindrical lithium battery automatic correcting machine, which comprises:

[0005] A conveying component is arranged above the conveying area, and the conveying component is used to convey the tray containing the battery cells in the conveying area along the first direction.

[0006] A guide rail is arranged above the conveying area, and the guide rail extends along the second direction. A sliding table is arranged on the guide rail, and the sliding table can move along the length direction of the guide rail.

[0007] An image acquisition component is connected to the sliding table, and is used to acquire the electrode images of all battery cells in the tray.

[0008] A correcting component is connected to the sliding table, and is used to rotate each battery cell in the tray so that the electrodes of all battery cells are oriented in the same direction.

[0009] Preferably, the tray is provided with a plurality of battery holes for accommodating the battery cells. Each battery cell is limited in the battery hole and can only rotate along the axis of the battery cell and be taken out or put into the battery hole along the axial direction.

[0010] Preferably, the plurality of battery holes in the tray are arranged in a matrix, and the rows or columns of the matrix are parallel to the first direction.

[0011] Preferably, the second direction is parallel or perpendicular to the first direction.

[0012] Preferably, a starting area is arranged at the first end of the guide rail, and an ending area is arranged at the second end of the guide rail, the slide table can be transferred between the starting area and the ending area, and the starting area and the ending area are located on both sides of the conveying area in the vertical projection plane.

[0013] Preferably, the image acquisition component and the correction component are arranged at the first side and the second side of the slide table respectively.

[0014] Preferably, the image acquisition component comprises one or more CCD cameras, and when the slide table is moved from the first end of the guide rail to the second end, all the batteries on the tray are located in the field of view of all the CCD cameras.

[0015] Preferably, the correction component is connected to the slide table through a double-shaft driving component, the extension direction of the guide rail is defined as the X-axis direction, and the double-shaft driving component is used to drive the correction component to move along the Y-axis and Z-axis directions perpendicular to the guide rail.

[0016] Preferably, the correction component comprises a plurality of groups of rotating drivers arranged at equal intervals along the Y-axis direction, the output ends of the rotating drivers are connected to clamping jaws, and the rotating drivers are used to drive the clamping jaws to rotate around the axis of the battery, and the clamping jaws are used to clamp / release the battery.

[0017] Preferably, the interval between every two clamping jaws is an integer multiple of the interval between two adjacent batteries.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] The utility model discloses a two-step process of taking a photo to obtain the battery electrode angle and correcting the angle of each battery, which makes the multiple batteries with disordered angles in the tray be corrected to have consistent angles, the slide table is reciprocated above the tray once, the image acquisition device obtains the electrode angle information of all the batteries, and then the correction device corrects the angle of all the batteries row by row, so that the utility model has high automation degree, accurate correction and can meet the testing demand before DCIR testing. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are not intended to be drawn to scale. In the drawings, each same or like component shown in each of the drawings can be denoted by the same reference numeral. For the sake of clarity, not every component can be labeled in every drawing. Embodiments of various aspects of the utility model will now be described, by way of example only, and with reference to the drawings in which:

[0021] Figure 1 It is the process schematic view that the cylindrical lithium battery automatic correction machine shown in the utility model adjusts the battery electrode to be consistent.

[0022] Figure 2It is the structure schematic view of the cylindrical lithium battery automatic correcting machine shown in the utility model.

[0023] Figure 3 It is the side view of the cylindrical lithium battery automatic correcting machine shown in the utility model.

[0024] Figure 4 It is the structure schematic view of the correcting part shown in the utility model. Specific embodiment

[0025] In order to understand the technical content of the utility model more, specific embodiments are raised and the following is described with the attached drawings.

[0026] As shown in the combination Figure 1 The tray 20 is the basic unit of the battery transfer, and the batteries 100 in the tray 20 are arranged in an M*N matrix. The orientations of the fan-shaped electrodes on each battery 100 are inconsistent. When the DCIR test is performed, the positions of the probes are fixed. Therefore, it is necessary to adjust the fan-shaped electrodes of all the batteries 100 in the tray 20 to be consistent in angle before the DCIR test.

[0027] Specifically, the utility model proposes a scheme. The images of the electrodes of the batteries 100 in the tray 20 are acquired by taking pictures of the batteries 100. Each battery 100 in each row is marked according to the images, and the angle required for adjusting each battery 100 is calculated. The angle of each battery 100 is adjusted by the correcting part. Finally, the orientations of the electrodes of all the batteries 100 are consistent in angle.

[0028] As shown in the combination Figure 2 The embodiment shown in the utility model proposes a cylindrical lithium battery automatic correcting machine, which comprises a conveying part 10, a guide rail 30, an image acquisition part 40, and a correcting part.

[0029] The conveying part 10 forms a conveying area above. The conveying part 10 is used for conveying the tray 20 containing the batteries 100 and placed in the conveying area along a first direction.

[0030] A plurality of battery holes 21 for accommodating the batteries 100 are arranged in the tray 20. Each battery 100 is limited in the battery hole 21 and can only rotate along the axis of the battery 100 and be taken out or put into the battery hole 21 along the axial direction.

[0031] Optionally, the plurality of battery holes 21 in the tray 20 are arranged in a matrix. The rows or columns of the matrix are parallel to the first direction.

[0032] Specifically, the conveying part 10 comprises a plurality of roller structures 11. When the tray 20 is placed on the surface of the roller structure 11 and is pushed, the roller structure 11 rotates to reduce the resistance of movement.

[0033] For example, when the pallet 20 is placed into the conveying area above the conveying component 10 by the robot, the pallet 20 is pushed into a predetermined position, especially in the middle position of the conveying component 10. At this time, the pallet 20 is in a state of waiting to be photographed and corrected.

[0034] Furthermore, the guide rail 30 is positioned above the conveying area and extends along a second direction. A slide table 31 is mounted on the guide rail 30 and can move along the length of the guide rail 30. The second direction is parallel or perpendicular to the first direction. The illustration shows the second direction being perpendicular to the first direction.

[0035] The image acquisition unit 40 is connected to the slide table 31 and is used to acquire electrode images of all batteries 100 in the tray 20. After acquiring the electrode images of all batteries 100, it is combined with... Figure 1 As shown, based on the orientation characteristics of the sector, the controller can calculate the difference between each battery and the target angle. For example, if a battery is oriented at 45° and the target angle is 0°, then the battery needs to be rotated 45° counterclockwise.

[0036] Specifically, the task of rotating the battery 100 is accomplished by a straightening component connected to the slide 31, which rotates each battery 100 in the tray 20 so that the electrodes of all batteries 100 are facing the same direction.

[0037] In an optional embodiment, combined with Figure 3 As shown, the image acquisition component 40 and the correction component are respectively disposed on the first and second sides of the slide 31. Therefore, when the image acquisition component 40 acquires an image of the battery 100, its viewing angle is wider and will not be obstructed by the correction component.

[0038] Optionally, the image acquisition unit 40 includes one or more CCD cameras, such that when the slide 31 moves from the first end to the second end of the guide rail 30, all the batteries 100 on the tray 20 are within the field of view of all the CCD cameras.

[0039] Combination Figure 3 As shown, the diagram includes four CCD cameras. Each CCD camera acquires an image of a certain width. The four CCD cameras can capture the entire width of the tray 20. When the slide 31 moves from the first end to the second end of the guide rail 30, each CCD camera acquires a strip-shaped image of a certain width. The four CCD cameras can capture the entire range of the tray 20, which includes all the fan-shaped electrode angles of the batteries 100.

[0040] Combination Figure 2As shown, a starting area 301 is arranged at the first end of the guide rail 30, and an ending area 302 is arranged at the second end of the guide rail 30, the sliding table 31 can move between the starting area 301 and the ending area 302, and the starting area 301 and the ending area 302 are located on both sides of the conveying area in the vertical projection plane.

[0041] In a specific embodiment, the sliding table 31 moves from the starting area 301 to the ending area 302 in the order of first acquiring images by the image acquisition component 40, and then correcting the angle of each battery 100 by the correction component, the image acquisition component 40 acquires the angle images of the electrodes of all the batteries 100, controls the correction angle of each electrode according to the angle difference between the existing angle and the preset angle, and then controls the sliding table 31 to move from the ending area 302 to the starting area 301, and corrects and compensates the angle of each battery 100 by the correction component, so that the battery 100 is finally rotated to the predetermined angle.

[0042] In an optional embodiment, the correction component includes a plurality of rotation drivers 51 arranged at equal intervals along the Y-axis direction, the output end of the rotation driver 51 is connected to a clamping jaw 52, and the clamping jaw 52 is driven to rotate around the axis of the battery 100, and the clamping jaw 52 is used to clamp / release the battery 100.

[0043] Further, the correction component is connected to the sliding table 31 through the double-shaft driving component 32, the extension direction of the guide rail 30 is defined as the X-axis direction, and the double-shaft driving component 32 is used to drive the correction component to move along the Y-axis and Z-axis directions perpendicular to the guide rail 30.

[0044] In this way, when the clamping jaw 52 moves to the upper side of the battery 100 that needs to be corrected, the clamping jaw 52 is controlled to move downward along the Z-axis, the clamping jaw 52 clamps the battery 100, and the rotation angle and direction of the battery 100 are controlled by the rotation driver 51, so that the battery is corrected to the predetermined angle.

[0045] Further, since the arrangement density of the clamping jaw 52 is lower than that of the battery 100, the clamping jaw 52 can correct all the batteries 100 in the row by controlling the clamping jaw 52 to move along the Y-axis, and the interval between every two clamping jaws 52 should be an integer multiple of the interval between two adjacent batteries 100, so that when one clamping jaw 52 moves to the position corresponding to the next battery 100, the adjacent clamping jaw 52 can be moved backward by one battery 100 position synchronously.

[0046] Specifically, for example, there are 12 batteries 100 in a row, and there are four clamping jaws 52 in each row, and when correcting the batteries 100 in a row, each clamping jaw 52 is moved by one battery 100 interval to one side twice synchronously, and the correction of the 12 batteries 100 is completed.

[0047] In combination with the above embodiment, the battery electrode angle is obtained by photographing, and the angle of each battery is corrected in two steps, so that the multiple batteries with disordered angles in the supporting plate are corrected to have consistent angles, the slide table reciprocates above the supporting plate once, the image acquisition device obtains the electrode angle information of all the batteries, and then the correction device corrects the angles of all the batteries row by row, so that the degree of automation is high, the correction is accurate, and the testing demand before DCIR testing can be met.

[0048] Although the utility model has disclosed as above with preferred embodiment, it is not used to limit the utility model. Those skilled in the art to which the utility model belongs can make various changes and decorations without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be defined by the claims.

Claims

1. A cylindrical lithium battery automatic straightening machine, characterized by, The application relates to a battery electrode image acquisition device, comprising: a conveying component (10) formed with a conveying area on top, which is used for conveying a tray (20) containing batteries (100) and placed in the conveying area along a first direction; a guide rail (30) arranged above the conveying area, which extends along a second direction, and is provided with a sliding table (31) capable of moving along the length direction of the guide rail (30); an image acquisition component (40) connected to the sliding table (31), which is used for acquiring electrode images of all the batteries (100) in the tray (20); a correction component connected to the sliding table (31), which is used for rotating each battery (100) in the tray (20) so that the electrodes of all the batteries (100) are oriented in the same direction.

2. The cylindrical lithium battery automatic straightening machine according to claim 1, characterized in that, The tray (20) is provided with a plurality of battery holes (21) for containing the batteries (100), each battery (100) is limited in the battery hole (21) and can only rotate along the axis of the battery (100) and be taken out or put into the battery hole (21) along the axial direction.

3. The cylindrical lithium battery automatic straightening machine according to claim 2, characterized in that, The plurality of battery holes (21) in the tray (20) are arranged in a matrix, and the rows or columns of the matrix are parallel to the first direction.

4. The cylindrical lithium battery automatic straightening machine according to claim 1, characterized in that, The second direction is parallel or perpendicular to the first direction.

5. The cylindrical lithium battery automatic straightening machine according to claim 1, characterized in that, A starting area (301) is arranged at the first end of the guide rail (30), and an ending area (302) is arranged at the second end of the guide rail (30), the sliding table (31) can be transferred between the starting area (301) and the ending area (302), and the starting area (301) and the ending area (302) are located on both sides of the conveying area in the vertical projection plane.

6. The cylindrical lithium battery automatic straightening machine according to claim 1, characterized in that, The image acquisition component (40) and the correction component are arranged on the first side and the second side of the sliding table (31) respectively.

7. The cylindrical lithium battery automatic straightening machine according to claim 1, characterized in that, The image acquisition component (40) comprises one or more CCD cameras, when the sliding table (31) is moved from the first end of the guide rail (30) to the second end, all the batteries (100) on the tray (20) are located in the field of view of all the CCD cameras.

8. The cylindrical lithium battery automatic straightening machine according to claim 1, characterized in that, The correction component is connected to the sliding table (31) through a double-shaft driving component (32), the extension direction of the guide rail (30) is defined as the X-axis direction, and the double-shaft driving component (32) is used for driving the correction component to move along the Y-axis and Z-axis directions perpendicular to the guide rail (30).

9. The cylindrical lithium battery automatic straightening machine according to claim 1, characterized in that, The correction component comprises a plurality of rotating drivers (51) arranged at equal intervals along the Y-axis direction, the output end of the rotating driver (51) is connected with a clamping jaw (52), and the clamping jaw (52) is driven by the rotating driver (51) to rotate around the axis of the battery (100), and the clamping jaw (52) is used for clamping and releasing the battery (100).

10. The cylindrical lithium battery automatic straightening machine according to claim 9, characterized in that, The interval between every two clamping jaws (52) is an integer multiple of the interval between two adjacent batteries (100).

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