Battery cell appearance detection equipment

Abstract

The invention relates to the technical field of battery cell detection, in particular to battery cell appearance detection equipment which comprises a detection table and a material passing groove formed between two opposite vertical faces of the detection table, a visual screening machine is arranged at the top in the material passing groove, and the battery cell appearance detection equipment further comprises two discharging sliding grooves oppositely formed in the material passing groove. A mounting groove is formed in the bottom in the material passing groove, and the sorting frame is arranged between the material passing groove and the mounting groove. According to the invention, after the visual screening machine recognizes the battery cells with dirt attached to the outer surfaces and the battery cells with flaws or damages on the outer surfaces, one of the two sorting frames is driven to turn over upwards by controlling the turnover driving part, so that the battery cells with dirt on the outer surfaces and the battery cells with flaws or damages on the outer surfaces fall into different discharging chutes respectively, and the working efficiency is improved. In this way, the battery cells with dirty appearances can be separated from the battery cells with flaws or damage appearances, the battery cell screening precision is improved, and the efficiency of recycling and re-cleaning the dirty battery cells is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell detection, and in particular to a battery cell appearance detection device. Background Art

[0002] A cell is a single electrochemical cell containing positive and negative electrodes. The difference between a cell and a battery is that the former is generally not used directly, while the latter can be used directly. Depending on the usage scenario, the cell can be divided into cylindrical cells, square cells and soft-pack cells, among which the shape of soft-pack cells is generally sheet-shaped.

[0003] During the production process of battery cells, some battery cells will have dirt attached to the outside, and some battery cells will be damaged on the outside, while the remaining battery cells have normal appearance and are qualified. In order to prevent dirty or damaged battery cells from being shipped to customers, the battery cells need to be inspected for appearance using appearance inspection equipment before they are packaged and shipped, so as to screen out the dirty and damaged battery cells, so that they can be packaged and shipped after the dirty battery cells are recycled and cleaned. However, the existing battery cell appearance inspection equipment is not detailed enough when screening battery cells, so that damaged and dirty battery cells are mixed together. When the dirty battery cells are recycled and cleaned, a re-screening step is added, which has a great impact on the production capacity of the battery cells. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a battery cell appearance inspection device to solve the problem that the battery cell screening is not detailed enough, which affects the recovery and cleaning efficiency of dirty battery cells.

[0005] Based on the above purpose, the present invention provides a battery cell appearance inspection device, comprising a test platform and a material trough provided between two relatively vertical surfaces of the test platform, wherein a visual screening machine is provided on the top of the material trough, and the battery cell appearance inspection device further comprises:

[0006] Relative to the two material discharge chutes arranged in the material transfer chute, a mounting groove is arranged at the bottom of the material transfer chute.

[0007] A sorting rack is arranged between the material passing trough and the installation trough.

[0008] The flipping drive unit arranged in the installation groove drives one of the corresponding sorting racks to flip upward when the visual screening machine identifies a dirty or defective battery cell, so that the battery cell falls into the corresponding unloading chute.

[0009] Two groups of long conveying rollers arranged in the material passing chute rotate relatively.

[0010] A plurality of short conveying rollers arranged in one of the sorting racks are rotated.

[0011] Two conveying members are arranged opposite to each other on the detection platform.

[0012] A driving member is used to drive the long conveying roller and the short conveying roller to rotate synchronously in the same direction.

[0013] A transmission member is arranged between the long conveying roller and the conveying member, and the transmission member is used to link the long conveying roller and the conveying member to operate synchronously in the same direction.

[0014] Preferably, the two sorting racks are arranged in a relative and cross manner in the material transfer chute, and the two sorting racks are located between the two material discharge chutes.

[0015] Preferably, the short conveying roller is located between the two groups of long conveying rollers along its radial direction, and both end surfaces of the short conveying roller are respectively close to the two unloading chutes.

[0016] Preferably, the two long conveying rollers are located between the two conveying members, and the long conveying rollers and the conveying members are arranged in parallel.

[0017] Preferably, the conveying member comprises:

[0018] A conveying frame is fixedly arranged on one of the vertical surfaces of the detection platform.

[0019] The driving roller and the driven roller arranged in the conveying frame rotate relative to each other.

[0020] A conveyor belt is rotatably sleeved between the active roller and the outside of the driven roller.

[0021] Preferably, the transmission member comprises two transmission teeth respectively fixed on one end of the long conveying roller and the active roller, and a transmission belt is rotatably sleeved between the two transmission teeth.

[0022] Preferably, the flip driving unit comprises:

[0023] A transfer arm is fixedly arranged at the bottom of the sorting frame.

[0024] A crescent tooth is fixedly arranged at the bottom end of the middle rotating arm.

[0025] A fixing frame is fixedly arranged in the installation groove.

[0026] The screw rod disposed in the fixing frame is rotated.

[0027] A pushing block is threadedly sleeved on the middle of the screw rod.

[0028] A double-headed rack rod is transversely slidably arranged in the installation groove, one end of the pushing block is fixedly arranged in the middle of the double-headed rack rod, and the two crescent teeth respectively correspond to the tooth surfaces at both ends of the double-headed rack rod.

[0029] A driving motor is used to drive the screw to rotate.

[0030] Preferably, the middle of the middle transfer arm is hinged in the installation slot, and the two middle transfer arms are arranged opposite to each other in the installation slot.

[0031] Preferably, the driving member comprises:

[0032] A support frame is fixedly arranged in the installation groove.

[0033] Two flat gears arranged on the support frame rotate relative to each other.

[0034] A double-sided toothed belt is rotatably sleeved between the outer portions of the two flat gears.

[0035] A central tooth is fixedly sleeved between the long conveying roller and the short conveying roller, and the tooth surfaces at the two ends of the outer side of the double-sided toothed belt are meshed with the tooth surfaces of the central tooth.

[0036] A servo motor is used to drive one of the spur gears to rotate.

[0037] Preferably, the support frame is located vertically between the fixed frame and the long conveying roller, and the support frame is located laterally between the two transfer arms.

[0038] Beneficial effects of the present invention:

[0039] The present invention uses a visual screening machine, a sorting frame that is relatively cross-arranged, a long conveying roller, a short conveying roller, a flipping drive unit, a driving member and other structures in coordination with each other. After the visual screening machine identifies the battery cells with dirt on the surface and the battery cells with defects or damage on the surface, it can control the flipping drive unit to drive one of the two sorting frames to flip upward, so that the battery cells with dirt on the surface and the battery cells with defects or damage on the surface can fall into different unloading chutes respectively, so that the battery cells with dirt on the surface can be screened out from the battery cells with defects or damage on the surface, thereby improving the accuracy of battery cell screening, and allowing the battery cells with dirty appearance to directly enter the cleaning process, thereby improving the efficiency of dirty battery cell recovery and cleaning, and after the battery cells with qualified appearance are identified, the driving member can be controlled to simultaneously drive the long conveying roller, the short conveying roller and the conveying members relatively arranged at the openings on both sides of the trough to operate synchronously, so that the battery cells can cross the trough and be conveyed to the next process. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A three-dimensional schematic diagram of the present invention Figure 1 ;

[0042] Figure 2 A three-dimensional schematic diagram of the present invention Figure 2 ;

[0043] Figure 3 A three-dimensional schematic diagram of the present invention Figure 3 ;

[0044] Figure 4 A three-dimensional schematic diagram of the present invention Figure 4 ;

[0045] Figure 5 It is a front view of the driving member in the present invention;

[0046] Figure 6 A three-dimensional schematic diagram of the present invention Figure 5 .

[0047] The markings in the figure are:

[0048] 1. Inspection table; 2. Material trough; 3. Visual screening machine; 4. Conveying parts; 41. Conveying frame; 42. Driven roller; 43. Active roller; 44. Conveying belt; 5. Long conveying roller; 6. Transmission parts; 61. Transmission gear; 62. Transmission toothed belt; 7. Sorting frame; 8. Short conveying roller; 9. Unloading chute; 10. Mounting slot; 11. Flipping drive unit; 111. Fixed frame; 112. Screw rod; 113. Pushing block; 114. Driving motor; 115. Double-headed rack rod; 116. Center transfer arm; 117. Crescent tooth; 12. Driving parts; 121. Center tooth; 122. Support frame; 123. Flat gear; 124. Double-sided toothed belt; 125. Servo motor. DETAILED DESCRIPTION

[0049] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0050] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, a battery cell appearance inspection device includes a test platform 1 and a material trough 2 arranged between two relatively vertical surfaces of the test platform 1, and a visual screening machine 3 is arranged on the top of the material trough 2. The battery cell appearance inspection device also includes:

[0052] Relative to the two unloading chutes 9 arranged in the feeding chute 2, the two unloading chutes 9 correspond to dirty battery cells and defective battery cells respectively. An installation groove 10 is provided at the bottom of the feeding chute 2. The two ends of the installation groove 10 are respectively connected to the two unloading chutes 9, so that when the battery cells are screened, the battery cells can slide into the corresponding unloading chutes 9.

[0053] The sorting rack 7 is arranged between the material passing chute 2 and the mounting chute 10 .

[0054] The flipping driving unit 11 arranged in the mounting groove 10 drives one of the corresponding sorting racks 7 to flip upward when the visual screening machine 3 identifies a dirty or defective battery cell, so that the battery cell falls into the corresponding unloading chute 9.

[0055] Two sets of long conveying rollers 5 arranged in the material chute 2 rotate relative to each other.

[0056] A plurality of short conveying rollers 8 arranged in one of the sorting frames 7 are rotated.

[0057] Relative to the two conveying members 4 arranged on the inspection platform 1 , the two conveying members 4 are respectively located outside the two openings of the material chute 2 .

[0058] A driving member 12 is used to drive the long conveying roller 5 and the short conveying roller 8 to rotate synchronously in the same direction.

[0059] With such a design, the short conveying roller 8 , the long conveying roller 5 and the conveying member 4 can be driven by the driving member 12 to keep synchronous and identical conveying, and avoid interference between the flipping driving part 11 and the driving member 12 .

[0060] A transmission member 6 is provided between the long conveying roller 5 and the conveying member 4 , and is used for linking the long conveying roller 5 and the conveying member 4 to operate synchronously and in the same direction.

[0061] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, the two sorting racks 7 are relatively cross-arranged in the material chute 2, and the two sorting racks 7 are located between the two material discharge chutes 9. Such a design allows the battery cells to be inspected to stay in the cross-overlapping area between the two sorting racks 7, so that when the battery cells are detected to be dirty or defective in appearance, they can be flipped and lifted by the corresponding sorting racks 7, and the battery cells can fall into the corresponding material discharge chute 9.

[0062] like Figure 1 , Figure 3 and Figure 4 As shown, the short conveying roller 8 is located between the two groups of long conveying rollers 5 along its radial direction, and the two end surfaces of the short conveying roller 8 are respectively close to the two unloading chutes 9. Such a design allows normal battery cells to pass through between the two unloading chutes 9 and be conveyed to the next process. When the battery cells are detected to be dirty or defective, the dirty battery cells are conveyed to one of the unloading chutes 9, and the defective battery cells are conveyed to the other unloading chute 9, so that the two can be collected separately, which greatly reduces the mixing of more defective battery cells in the dirty battery cells, which affects the efficiency of dirty battery cell recovery, re-cleaning and re-screening.

[0063] like Figure 1 As shown, two long conveying rollers 5 are located between two conveying members 4, and the long conveying rollers 5 and the conveying member 4 are arranged in parallel. Such a design can make the battery cells transitionally conveyed by the long conveying rollers 5 during the conveying and screening process, so that the flipping of the sorting rack 7 will not affect the operation of the conveying member 4. The conveying member 4, the long conveying rollers 5 and the short conveying rollers 8 can maintain synchronous and unidirectional operation, thereby improving the stability of battery cell transportation and maintaining a fixed distance between two adjacent battery cells to avoid the screening operation being affected by the close distance between them.

[0064] like Figure 2 and Figure 3 As shown, the conveying member 4 includes:

[0065] A conveying frame 41 is fixedly arranged on one of the vertical surfaces of the testing platform 1 .

[0066] The driving roller 43 and the driven roller 42 disposed in the conveying frame 41 rotate relative to each other.

[0067] The conveyor belt 44 is rotatably sleeved between the driving roller 43 and the outside of the driven roller 42 .

[0068] The transmission member 6 comprises two transmission teeth 61 respectively fixedly arranged at one end of one of the long conveying rollers 5 and the active roller 43 , and a transmission toothed belt 62 is rotatably sleeved between the two transmission teeth 61 .

[0069] Through the power transmission of the transmission member 6, the conveyor belt 44 and the long conveyor roller 5 can keep rotating synchronously in the same direction, so that the normal battery cells can pass through one of the conveyor members 4, one group of long conveyor rollers 5, several short conveyor rollers 8, the remaining group of long conveyor rollers 5 and the remaining conveyor member 4 in sequence and be conveyed to the next process.

[0070] like Figure 4 and Figure 6 As shown, the flip driving unit 11 includes:

[0071] The transfer arm 116 is fixedly arranged at the bottom of the sorting frame 7 .

[0072] A crescent tooth 117 is fixedly disposed at the bottom end of the middle transfer arm 116 .

[0073] A fixing frame 111 is fixedly disposed in the installation slot 10 .

[0074] The screw rod 112 disposed in the fixing frame 111 is rotated.

[0075] A pushing block 113 is threadedly sleeved on the middle of the screw rod 112 , and the pushing block 113 is located between the two middle transfer arms 116 .

[0076] The double-headed rack rod 115 is laterally slidably arranged in the installation groove 10, one end of the pushing block 113 is fixedly arranged in the middle of the double-headed rack rod 115, and two moon teeth 117 correspond to the tooth surfaces at both ends of the double-headed rack rod 115 respectively.

[0077] A driving motor 114 is used to drive the screw rod 112 to rotate.

[0078] The middle of the middle transfer arm 116 is hinged in the installation slot 10 , and the two middle transfer arms 116 are arranged opposite to each other in the installation slot 10 .

[0079] With such a design, the drive motor 114 can be controlled to drive the lead screw to rotate forward or flip first, so that one of the two sorting racks 7 can be flipped, and the dirty battery cells can be discharged into one of the discharge chutes 9, and the defective battery cells can be discharged into the other discharge chute 9, so that the dirty battery cells are separated from the defective battery cells. When it is encountered that the defects are completely covered by dirt, they are all sorted into the dirty battery cells, and the defects that are not completely covered by dirt are all sorted into the defective battery cells. The dirty battery cells are recycled and cleaned, and then the cleaned battery cells are sent to the inspection table 1 again for screening, and the normal battery cells and the defective battery cells are screened out, thereby improving the accuracy and efficiency of battery cell screening and facilitating the centralized processing of defective battery cells.

[0080] like Figure 4 and Figure 5 As shown, the driving member 12 includes:

[0081] The support frame 122 is fixedly disposed in the mounting groove 10 .

[0082] The two flat gears 123 disposed on the support frame 122 rotate relative to each other.

[0083] The double-sided toothed belt 124 is rotatably sleeved between the two outer sides of the flat gears 123 .

[0084] The middle teeth 121 are fixedly sleeved between the long conveying roller 5 and the short conveying roller 8 , and the tooth surfaces at both ends of the outer side of the double-sided toothed belt 124 are meshed with the tooth surfaces of the middle teeth 121 .

[0085] A servo motor 125 is used to drive one of the flat gears 123 to rotate.

[0086] The support frame 122 is located vertically between the fixing frame 111 and the long conveying roller 5 , and the support frame 122 is located laterally between the two transfer arms 116 .

[0087] Such a design can effectively avoid interference from the driving member 12 when the sorting frame 7 is flipped, and after the flipped sorting frame 7 is reset, the central tooth 121 can again accurately mesh with the outer tooth surface of the double-sided toothed belt 124, avoiding the problem of tooth rubbing when the tooth surfaces of the two mesh, which increases the wear of the tooth surfaces.

[0088] Working principle: If the battery cell to be tested is cylindrical, the axial direction of the cylindrical battery cell must be consistent with the conveying direction. If the battery cell to be tested is square, the plane with a medium outer area of ​​the battery cell can be placed on the conveying member 4. If the battery cell to be tested is a soft-pack battery cell, the plane with the largest outer area of ​​the battery cell can be placed on the conveying member 4. Start the driving member 12 to drive the long conveying roller 5 and the short conveying roller 8 to rotate synchronously in the same direction, and through the power transmission of the transmission member 6, the two conveying members 4 are also conveyed synchronously in the same direction as the long conveying roller 5. Through one of the conveying members 4 and one group of long conveying rollers 5, the battery cell to be tested can be conveyed to the top of several short conveying rollers 8, and the battery cell to be tested is located in the cross-overlapping area of ​​the two sorting racks 7. The driving member 12 is stopped, so that the battery cell to be inspected is located on the top of the short conveying roller 8 and remains stationary, so that the visual screening machine 3 can take pictures of the appearance of the battery cell and identify whether the appearance of the battery cell is dirty or defective. If the appearance of the battery cell is not dirty or defective, the driving member 12 is started again, so that the battery cell with no dirt and defect in appearance after inspection is successively conveyed to the next process by the short conveying roller 8, the remaining group of long conveying rollers 5 and the remaining conveying member 4. At the same time, the next battery cell to be inspected can be conveyed to the intersection and overlap area of ​​the two sorting racks 7, and the above steps can be repeated. If it is identified that the appearance of the battery cell is dirty, the driving motor 114 is controlled to drive the screw rod 112 to rotate forward, so that the pushing block 113 drives the double-headed rack rod 115 to approach one of the unloading chutes 9. In addition, the double-headed rack rod 115 pushes the transfer arm 116 located between the pushing block 113 and the unloading chute 9 close to the pushing block 113 to deflect through the crescent teeth 117. The deflected transfer arm 116 uses its hinge as the deflection point to push the sorting frame 7 fixedly connected to the deflected transfer arm 116 to deflect upward, so that the inclination angle of the sorting frame 7 becomes larger and larger, so that when the battery cell is lifted, the battery cell can slide into the unloading chute 9 close to the pushing block 113. After the battery cell falls into the corresponding unloading chute 9, the driving motor 114 drives the screw rod 112 to reverse, so that the screw rod 112 drives the pushing block 113 to reset to the middle of the screw rod 112, and synchronously drives the double-headed rack rod 115, the crescent teeth 117, the transfer arm 116 and the flipped sorting frame 7 After the selection rack 7 is reset, the driving part 12 can be started again to load the next battery cell to be tested into the cross-overlapping area of ​​the two sorting racks 7. If it is identified that the battery cell has defects or damage on its appearance, the driving motor 114 is controlled to drive the screw rod 112 to reverse, so that the pushing block 113 drives the double-headed rack rod 115 to approach another unloading chute 9, and the double-headed rack rod 115 pushes another transfer arm 116 to deflect through the crescent tooth 117. The deflected transfer arm 116 uses its hinge as the deflection point to push the sorting rack 7 fixedly connected to the deflected transfer arm 116 to deflect upward, so that the inclination angle of the sorting rack 7 becomes larger and larger, so that when the battery cell is lifted, the battery cell can slide into another unloading chute 9. After the battery cell falls into the corresponding unloading chute 9,The driving motor 114 drives the screw rod 112 to rotate forward, so that the screw rod 112 drives the pushing block 113 to reset to the middle of the screw rod 112, and synchronously drives the double-headed rack rod 115, the crescent tooth 117, the intermediate transfer arm 116 and the flipped sorting rack 7 to reset, and then the driving part 12 can be started again to feed the next battery cell to be tested into the cross-overlapping area of ​​the two sorting racks 7, so that the battery cells can be carefully screened out, and the battery cells with no flaws and no dirt are conveyed to the next process, and the battery cells with dirty appearance are conveyed to the next process. The cells with flaws are collected on one side of the inspection table 1, and the cells with flaws are collected on the other side of the inspection table 1. In this way, the cells with dirty appearance can be recycled and cleaned, and the above steps can be repeated again to sort out the flawless and flawed cells. The flawed cells can be collected and processed uniformly, which improves the cell screening accuracy and avoids excessive mixing of dirty cells and flawed cells, reduces the workload of recycling and cleaning dirty cells, and improves the efficiency of recycling and cleaning dirty cells.

[0089] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0090] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A battery cell appearance inspection device, comprising a test platform (1) and a material trough (2) arranged between two opposite vertical surfaces of the test platform (1), wherein a visual screening machine (3) is arranged on the top of the material trough (2), characterized in that: The battery cell appearance inspection device also includes: Relative to the two material discharge chutes (9) arranged in the material transfer chute (2), a mounting groove (10) is arranged at the bottom of the material transfer chute (2); A sorting rack (7) disposed between the material passing trough (2) and the mounting trough (10); A flipping drive unit (11) disposed in the mounting groove (10) drives one of the corresponding sorting racks (7) to flip upward when the visual screening machine (3) identifies a dirty or defective battery cell, so that the battery cell falls into the corresponding unloading chute (9); Two sets of long conveying rollers (5) arranged in the material trough (2) and rotating relative to each other; Rotating a plurality of short conveying rollers (8) disposed in one of the sorting racks (7); Two conveying members (4) arranged opposite to each other on the detection platform (1); A driving member (12) for driving the long conveying roller (5) and the short conveying roller (8) to rotate synchronously in the same direction; A transmission member (6) is arranged between the long conveying roller (5) and the conveying member (4), and the transmission member (6) is used to link the long conveying roller (5) and the conveying member (4) to operate synchronously and in the same direction.

2. The battery cell appearance inspection device according to claim 1, characterized in that: The two sorting racks (7) are arranged in a relative and cross manner in the material passing chute (2), and the two sorting racks (7) are located between the two material discharge chutes (9).

3. The battery cell appearance inspection device according to claim 2, characterized in that: The short conveying roller (8) is located between the two groups of long conveying rollers (5) along its radial direction, and both end surfaces of the short conveying roller (8) are respectively close to the two material discharge chutes (9).

4. The battery cell appearance inspection device according to claim 3, characterized in that: The two long conveying rollers (5) are located between the two conveying members (4), and the long conveying rollers (5) and the conveying members (4) are arranged in parallel.

5. The battery cell appearance inspection device according to claim 4, characterized in that: The conveying member (4) comprises: A conveying frame (41) fixedly arranged on one of the vertical surfaces of the detection platform (1); A driving roller (43) and a driven roller (42) arranged in the conveying frame (41) rotate relative to each other; A conveyor belt (44) is rotatably sleeved between the active roller (43) and the outside of the driven roller (42).

6. The battery cell appearance inspection device according to claim 5, characterized in that: The transmission member (6) comprises two transmission teeth (61) respectively fixed to one end of one of the long conveying rollers (5) and the active roller (43), and a transmission toothed belt (62) is rotatably sleeved between the two transmission teeth (61).

7. The battery cell appearance inspection device according to claim 6, characterized in that: The flip driving unit (11) comprises: A transfer arm (116) fixedly arranged at the bottom of the sorting frame (7); A crescent tooth (117) fixedly arranged at the bottom end of the middle transfer arm (116); A fixing frame (111) fixedly arranged in the installation groove (10); Rotating a screw rod (112) disposed in the fixing frame (111); A pushing block (113) threadedly sleeved on the middle of the screw rod (112); A double-headed rack rod (115) is transversely slidably disposed in the mounting groove (10), one end of the push block (113) is fixedly disposed in the middle of the double-headed rack rod (115), and the two crescent teeth (117) respectively correspond to the tooth surfaces at both ends of the double-headed rack rod (115); A driving motor (114) is used for driving the screw rod (112) to rotate.

8. The battery cell appearance inspection device according to claim 7, characterized in that: The middle of the middle transfer arm (116) is hinged in the installation slot (10), and the two middle transfer arms (116) are arranged opposite to each other in the installation slot (10).

9. The battery cell appearance inspection device according to claim 8, characterized in that: The driving member (12) comprises: A support frame (122) fixedly arranged in the installation groove (10); Two flat gears (123) arranged on the support frame (122) rotate relative to each other; A double-sided toothed belt (124) rotatably sleeved between the exteriors of the two flat gears (123); A central tooth (121) is fixedly sleeved between the long conveying roller (5) and the short conveying roller (8), and the tooth surfaces at both ends of the outer side of the double-sided toothed belt (124) are meshed with the tooth surfaces of the central tooth (121); A servo motor (125) is used to drive one of the flat gears (123) to rotate.

10. The battery cell appearance inspection device according to claim 9, characterized in that: The support frame (122) is located vertically between the fixed frame (111) and the long conveying roller (5), and the support frame (122) is located laterally between the two transfer arms (116).

Images