Battery piece buffer regular device

Abstract

A battery piece buffer regular device, the battery piece buffer regular device includes frame, conveying mechanism, regular mechanism and buffer mechanism, a plurality of bearing tables of conveying mechanism in the application receive the front half string battery piece at the regular station, the regular mechanism is regular to the front half string battery piece, then conveying mechanism conveys the front half string battery piece to the buffer station, the two tray of buffer mechanism drive adsorption tray to rise, make the front half string battery piece on a plurality of bearing tables transfer to adsorption tray, then a plurality of bearing tables return to the regular station again and accept the back half string battery piece, the regular mechanism is regular to the back half string battery piece, then a plurality of bearing tables move the back half string battery piece to the position close to the buffer station, the buffer mechanism is lowered to the position parallel to the front half string battery piece with the back half string battery piece, and the handling mechanism takes away the front half string battery piece and the back half string battery piece simultaneously, the buffer mechanism in the application only carries out vertical lifting operation to the front half string battery piece, therefore the front half string battery piece and the back half string battery piece are in the same straight line, and there is no position deviation, which guarantees the flatness of the battery string after string welding.

Description

Technical Field

[0001] This application relates to the field of back contact battery string production equipment, specifically a battery cell buffering and straightening device. Background Technology

[0002] Before being strung together, the battery strings need to be aligned and positioned to adjust the spacing and alignment of adjacent cells. In existing technologies, for cost reasons, the first half of the battery string is usually aligned at the alignment station, and then a robotic arm transports the aligned first half of the battery string from the alignment station to the stringing station. Subsequently, the second half of the battery string is sent to the alignment station for alignment, and then a robotic arm sends the aligned second half of the battery string to the stringing station, thus forming a complete string of battery cells at the stringing station for the subsequent stringing work by the stringer.

[0003] However, when the alignment station and the stringing station are not on a straight line, the movement path of the robot arm to transport half a string of cells from the alignment station to the stringing station will be arc-shaped. There will also be movement errors when the robot arm transports half a string of cells, making it difficult to ensure that the robot arm places the cells in the same position at the stringing station each time. Therefore, the two half strings of cells placed at the stringing station one after the other are prone to misalignment, resulting in poor flatness of the battery string after stringing and welding. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a battery cell buffering and straightening device, the specific technical solution of which is as follows:

[0005] A battery cell buffering and straightening device, comprising a frame, a conveying mechanism, a straightening mechanism, and a buffering mechanism, wherein:

[0006] The conveying mechanism includes multiple carrier platforms and a first driving component. Each carrier platform is used to receive a battery cell, and the first driving component is used to drive the multiple carrier platforms to move along a first direction to a regularization station or a buffer station.

[0007] The support platform is provided with auxiliary support rods on both sides along the second direction. The support platform and the auxiliary support rods are used to jointly support the battery cell. The second direction is perpendicular to the first direction on the horizontal plane.

[0008] The straightening mechanism is mounted on the straightening station and is used to straighten the battery cells on the support platform located at the straightening station.

[0009] The buffer mechanism is mounted on the buffer station. The buffer mechanism includes a second driving component and two parallel trays. On the side of the two trays that are close to each other, there are multiple adsorption trays that correspond one-to-one with the support platform. The movement trajectory of the support platform passes through the area between the two trays.

[0010] The two trays are vertically and vertically mounted on the frame, and the second drive is configured to drive the two trays to descend synchronously to a position where the adsorption platform is lower than the auxiliary support rod, so as to avoid the movement trajectory of the support platform;

[0011] When the support platform is located at the cache station, the auxiliary support rods on each support platform are arranged alternately with the corresponding adsorption support platform. The second driving member is also configured to drive the two support plates to rise synchronously to a position where the adsorption support platform is higher than the auxiliary support rods, so that the adsorption support platform can remove the battery cells from the support platform.

[0012] In this application, after multiple carrier platforms of the conveying mechanism receive the first half of the battery cell string at the aligning station, the aligning mechanism aligns the first half of the battery cell string. Subsequently, the conveying mechanism transports the first half of the battery cell string to the buffer station. The two trays of the buffer mechanism drive the adsorption tray to rise, transferring the first half of the battery cell string from the multiple carrier platforms to the adsorption tray. Then, the multiple carrier platforms return to the aligning station to receive the second half of the battery cell string. After the aligning mechanism aligns the second half of the battery cell string, the multiple carrier platforms move the second half of the battery cell string to a position close to the buffer station. The buffer mechanism lowers the first half of the battery cell string to a position parallel to the second half of the battery cell string. The transport mechanism removes the first and second half of the battery cell string simultaneously. In this application, the buffer mechanism only performs vertical lifting and lowering operations on the first half of the battery cell string. Therefore, the first and second half of the battery cell string are on the same straight line, and there will be no positional deviation, ensuring the flatness of the battery string after string welding.

[0013] In some embodiments, a plurality of first adsorption holes are provided on the support platform, and the battery cells are adsorbed onto the support platform by negative pressure through the plurality of first adsorption holes.

[0014] The adsorption platform is provided with a plurality of second adsorption holes, which adsorb the battery cells onto the adsorption platform by negative pressure.

[0015] By setting a first adsorption hole on the support platform to fix the battery cell on the support platform, when the first driving member drives the support platform and the battery cell to slide synchronously, the battery cell and the support platform remain relatively stationary, thus avoiding the battery cell from shifting.

[0016] In some embodiments, the auxiliary support rod includes a first support portion and a first extension portion. The first support portion is disposed on the side of the support platform and extends outward along the second direction. The first extension portion is disposed at the end of the first support portion and extends along the first direction.

[0017] The adsorption platform includes a second support portion and a second extension portion. The second support portion is disposed on the side of the tray and extends outward along the second direction. The second extension portion is disposed at the end of the second support portion and extends along the first direction.

[0018] The first extension and the second extension are oriented in opposite directions. The space formed between the first extension, the first support, and the support platform allows the second extension to pass vertically through it, and the space formed between the second extension, the second support, and the tray allows the first extension to pass vertically through it.

[0019] By allowing the first and second extensions to pass vertically through the gaps in the adsorption platform and auxiliary support rod, the solar cells are stably supported while suspended on the support platform, preventing them from shifting due to shaking during cell transfer and ensuring the alignment of each solar cell during stringing.

[0020] In some embodiments, the second adsorption hole is disposed on the second extension of each of the adsorption supports.

[0021] By setting the second adsorption hole on the second extension extending along the first direction, the area of ​​the battery cell that the second adsorption hole can contact is increased, so that the second adsorption hole can hold the middle part of the battery cell. The battery cell can be centrally and symmetrically adsorbed on the support platform and the second extension, ensuring the stability of the battery cell during movement and handover.

[0022] In some embodiments, the two first support portions on each of the support platforms are located on opposite sides of the support platform along the first direction, and the two first extension portions on each of the support platforms are oriented in opposite directions.

[0023] By symmetrically arranging two auxiliary support rods on both sides of the same support platform along the center of the platform, the center of gravity of the two auxiliary support rods coincides with the center of gravity of the platform, thus ensuring the stability of the platform during movement.

[0024] In some embodiments, the buffer mechanism further includes a plurality of movable plates, each of the adsorption platforms being fixed to one of the movable plates;

[0025] The movable plate has an oblong hole extending along the first direction. The buffer mechanism also includes a bolt that passes through the oblong hole on the movable plate and is threadedly connected to the tray. The movable plate is detachably fixed to the tray by the bolt.

[0026] By adjusting the position of the movable plate on the tray, the position of the adsorption tray is adjustable, enabling the adsorption tray to hold the center of the battery cells even when they are of different sizes, thus making the adsorption tray adaptable to a variety of battery cells of different sizes.

[0027] In some embodiments, the conveying mechanism further includes a plurality of sliding seats, which are respectively mounted on the driving end of the first driving member. Each of the carrier platforms is mounted on one of the sliding seats. The first driving member is configured to drive the plurality of sliding seats to slide along the first direction. There is a space between each sliding seat and the auxiliary support rod on the corresponding carrier platform for the adsorption support platform to pass horizontally.

[0028] By protruding the support platform onto the sliding seat, a space is formed between the auxiliary support rods on both sides of the support platform and the sliding seat below, allowing the adsorption support platform to move to the gaps in the auxiliary support rods, thereby achieving an alternating arrangement of the adsorption support platform and the auxiliary support rods.

[0029] In some embodiments, the first drive unit is a linear motor module, and the first drive unit is configured to drive the plurality of sliding seats to slide independently along the first direction.

[0030] By enabling each sliding seat and support platform to operate independently, the spacing between adjacent battery cells can be adjusted at the regularization station, further improving the quality of battery strings produced subsequently.

[0031] In some embodiments, the second drive unit includes two lifting seats, a servo motor, a pulley assembly and two sets of ball screw assemblies. The two trays are respectively mounted on the two lifting seats. The two lifting seats are movably mounted on the frame. The sliding sleeves of the two sets of ball screw assemblies are respectively fixedly connected to the two lifting seats.

[0032] The servo motor and pulley assembly are driven on the frame. The servo motor drives the screws of two sets of ball screw assemblies to rotate through the pulley assembly, thereby driving the two lifting seats to rise and fall vertically.

[0033] By combining a single servo motor and two sets of ball screw assemblies, the synchronous lifting of the two lifting seats is achieved, ensuring that the two trays are lifted and lowered stably and synchronously, so that the battery cells can be simultaneously held by the adsorption platforms on the two trays.

[0034] In some embodiments, the straightening mechanism includes a straightening element and a third driving element. The straightening element is slidably mounted on the frame along the second direction, and the third driving element is used to drive the straightening element to move closer to or further away from the battery cells on each of the bearing platforms on the straightening station along the second direction, so that the battery cells on each of the bearing platforms are aligned along the first direction.

[0035] The third driving component drives the alignment component to slide horizontally along the second direction, thereby aligning the battery cells on each support platform along the first direction and ensuring the flatness of the battery cells. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure in the embodiments of this application;

[0037] Figure 2 This is a schematic diagram illustrating the cooperation relationship between the adsorption platform and the auxiliary support rod in the embodiments of this application;

[0038] Figure 3 This is a schematic diagram of the assembly structure of the cache mechanism in the embodiments of this application.

[0039] Figures 1 to 3 Includes:

[0040] 1. Rack;

[0041] 2. Conveying mechanism; 21. Support platform; 211. First suction hole; 22. First driving component; 23. Auxiliary support rod; 231. First support part; 232. First extension part; 24. Sliding seat;

[0042] 3. Steering mechanism; 31. Steering component; 32. Third drive component;

[0043] 4. Buffer mechanism; 41. Second drive component; 411. Lifting seat; 412. Servo motor; 413. Pulley assembly; 414. Ball screw assembly; 42. Support plate; 43. Adsorption platform; 431. Second adsorption hole; 432. Second support part; 433. Second extension part; 44. Moving plate; 441. Waist-shaped hole;

[0044] 5. Battery cell; X, first direction; Y, second direction. Detailed Implementation

[0045] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] A cell buffering and straightening device, such as Figure 1 As shown, the battery cell buffering and straightening device includes a frame 1, a conveying mechanism 2, a straightening mechanism 3, and a buffering mechanism 4, wherein:

[0047] The conveying mechanism 2 includes multiple carrier platforms 21 and a first driving member 22. Each carrier platform 21 is used to receive one battery cell 5, and the first driving member 22 is used to drive the multiple carrier platforms 21 to move along the first direction X to the straightening station or the buffering station. Auxiliary support rods 23 are respectively provided on both sides of the carrier platform 21 along the second direction Y. The carrier platform 21 and the auxiliary support rods 23 are used to jointly support the battery cell 5. The second direction Y is perpendicular to the first direction X on the horizontal plane. The straightening mechanism 3 is mounted on the straightening station and is used to straighten the battery cell 5 on the carrier platform 21 located at the straightening station. The buffering mechanism 4 is mounted on the buffering station and includes a second driving member 41 and two parallel pallets 42. Multiple adsorption platforms 43 corresponding one-to-one with the carrier platforms 21 are respectively provided on the side of the two pallets 42 that are close to each other. The moving trajectory of the carrier platform 21 passes through the area between the two pallets 42.

[0048] Two pallets 42 are vertically and vertically mounted on the frame 1. The second drive unit 41 is configured to drive the two pallets 42 to descend synchronously until the adsorption platform 43 is below the auxiliary support rod 23, thus avoiding the movement trajectory of the carrier platform 21. When the carrier platform 21 is located at the buffer station, the auxiliary support rod 23 on each carrier platform 21 is staggered with the corresponding adsorption platform 43. The second drive unit 41 is also configured to drive the two pallets 42 to rise synchronously until the adsorption platform 43 is above the auxiliary support rod 23, so that the adsorption platform 43 can remove the battery cell 5 from the carrier platform 21.

[0049] In this application, after the multiple carrier platforms 21 of the conveying mechanism 2 receive the first half of the battery cell string 5 at the straightening station, the straightening mechanism 3 straightens the first half of the battery cell string 5. Then, the conveying mechanism 2 conveys the first half of the battery cell string 5 to the buffer station. The two trays 42 of the buffer mechanism 4 drive the adsorption tray 43 to rise, transferring the first half of the battery cell string 5 from the multiple carrier platforms 21 to the adsorption tray 43. Subsequently, the multiple carrier platforms 21 return to the straightening station to receive the second half of the battery cell string 5, and the straightening mechanism 3 straightens the second half of the battery cell string 5. After the rows are aligned, multiple support platforms 21 move the rear half of the battery cell string 5 to a position close to the buffer station. The buffer mechanism 4 lowers the front half of the battery cell string 5 to a position parallel to the rear half of the battery cell string 5. The transport mechanism removes the front half of the battery cell string 5 and the rear half of the battery cell string 5 simultaneously. In this application, the buffer mechanism 4 only performs vertical lifting and lowering operations on the front half of the battery cell string 5. Therefore, the front half of the battery cell string 5 and the rear half of the battery cell string 5 are on the same straight line and there will be no positional deviation, ensuring the flatness of the battery string after the string is welded.

[0050] In some embodiments, such as Figure 2As shown, the support platform 21 has several first adsorption holes 211, which adsorb the battery cell 5 onto the support platform 21 through negative pressure. The adsorption support 43 has several second adsorption holes 431, which adsorb the battery cell 5 onto the adsorption support 43 through negative pressure.

[0051] By setting the first adsorption hole 211 on the support platform 21, the battery cell 5 is fixed on the support platform 21. When the first driving member 22 drives the support platform 21 and the battery cell 5 to slide synchronously, the battery cell 5 and the support platform 21 remain relatively stationary, thus preventing the battery cell 5 from shifting.

[0052] In some embodiments, such as Figure 2 As shown, the auxiliary support rod 23 includes a first support portion 231 and a first extension portion 232. The first support portion 231 is disposed on the side of the support platform 21 and extends outward along the second direction Y. The first extension portion 232 is disposed at the end of the first support portion 231 and extends along the first direction X.

[0053] The adsorption platform 43 includes a second support portion 432 and a second extension portion 433. The second support portion 432 is disposed on the side of the plate 42 and extends outward along the second direction Y. The second extension portion 433 is disposed at the end of the second support portion 432 and extends along the first direction X.

[0054] The first extension 232 and the second extension 433 are oriented in opposite directions. The space formed between the first extension 232, the first support 231 and the support platform 21 allows the second extension 433 to pass vertically through. The space formed between the second extension 433, the second support 432 and the support plate 42 allows the first extension 232 to pass vertically through.

[0055] By allowing the first extension 232 and the second extension 433 to pass vertically through the gaps in the adsorption support 43 and the auxiliary support rod 23 respectively, the battery cell 5 is stably supported on the support platform 21, preventing the battery cell 5 from shaking and shifting during the handover of the battery cell 5, and ensuring the flatness of each battery cell 5 during stringing.

[0056] In some embodiments, such as Figure 2 As shown, the second adsorption hole 431 is provided on the second extension 433 of each adsorption support 43. By providing the second adsorption hole 431 on the second extension 433 extending along the first direction X, the portion of the battery cell 5 that the second adsorption hole 431 can contact is increased, so that the second adsorption hole 431 can hold the middle part of the battery cell 5. The battery cell 5 can be centrally and symmetrically adsorbed on the support platform 21 and the second extension 433, ensuring the stability of the battery cell 5 during movement and transfer.

[0057] In some embodiments, such as Figure 3As shown, the two first support portions 231 on each support platform 21 are located on both sides of the support platform 21 along the first direction X, and the two first extension portions 232 on each support platform 21 are oriented in opposite directions.

[0058] By symmetrically arranging two auxiliary support rods 23 on both sides of the same support platform 21 along the center of the support platform 21, the center of gravity of the two auxiliary support rods 23 coincides with the center of gravity of the support platform 21, thus ensuring the stability of the support platform 21 during movement.

[0059] In some embodiments, such as Figure 2 As shown, the buffer mechanism 4 also includes multiple movable plates 44, with each adsorption platform 43 fixed on a movable plate 44. The movable plate 44 has an oblong hole 441 extending along the first direction X. The buffer mechanism 4 also includes bolts that pass through the oblong hole 441 on the movable plate 44 and are threadedly connected to the support plate 42. The movable plate 44 is detachably fixed to the support plate 42 by the bolts.

[0060] By adjusting the position of the movable plate 44 on the tray 42, the position of the adsorption platform 43 is adjustable, so that the center position of the battery cell 5 can be held by the adsorption platform 43 even when the battery cell 5 is of different sizes, and the adsorption platform 43 can be adapted to a variety of battery cells 5 of different sizes.

[0061] In some embodiments, such as Figure 1 As shown, the conveying mechanism 2 also includes multiple sliding seats 24, which are respectively installed on the driving end of the first driving member 22. Each carrier platform 21 is installed on a sliding seat 24. The first driving member 22 is configured to drive the multiple sliding seats 24 to slide along the first direction X. There is a space between each sliding seat 24 and the auxiliary support rod 23 on the corresponding carrier platform 21 for the adsorption support platform 43 to pass through horizontally.

[0062] By protruding the support platform 21 onto the sliding seat 24, a space is formed between the auxiliary support rods 23 on both sides of the support platform 21 and the sliding seat 24 below, allowing the adsorption support platform 43 to pass through. This allows the adsorption support platform 43 to move to the gap in the auxiliary support rods 23, thereby achieving an alternating arrangement of the adsorption support platform 43 and the auxiliary support rods 23.

[0063] In some embodiments, such as Figure 1 As shown, the first driving element 22 adopts a linear motor module, and the first driving element 22 is configured to drive multiple sliding seats 24 to slide independently along the first direction X.

[0064] By enabling each sliding seat 24 and the support platform 21 to operate independently, the spacing between each adjacent battery cell 5 can be adjusted at the regularization station, further improving the quality of the battery strings produced subsequently.

[0065] In some embodiments, such asFigure 3 As shown, the second driving component 41 includes two lifting seats 411, a servo motor 412, a pulley assembly 413, and two sets of ball screw assemblies 414. Two support plates 42 are respectively mounted on the two lifting seats 411. The two lifting seats 411 are movably mounted on the frame 1. The sliding sleeves of the two sets of ball screw assemblies 414 are fixedly connected to the two lifting seats 411. The servo motor 412 and the pulley assembly 413 are driven to rotate on the frame 1. The servo motor 412 drives the screws of the two sets of ball screw assemblies 414 to rotate via the pulley assembly 413, thereby driving the two lifting seats 411 to move vertically up and down.

[0066] The synchronous lifting of the two lifting seats 411 is achieved through the cooperation of a single servo motor 412 and two sets of ball screw assemblies 414, ensuring that the two trays 42 are lifted and lowered stably and synchronously, so that the battery cell 5 can be simultaneously attracted by the adsorption platform 43 on the two trays 42.

[0067] In some embodiments, such as Figure 1 As shown, the straightening mechanism 3 includes a straightening component 31 and a third driving component 32. The straightening component 31 is slidably mounted on the frame 1 along the second direction Y. The third driving component 32 is used to drive the straightening component 31 to move closer to or further away from the battery cells 5 on each support platform 21 in the straightening station along the second direction Y, so that the battery cells 5 on each support platform 21 are aligned along the first direction X. By driving the straightening component 31 to slide horizontally along the second direction Y through the third driving component 32, the battery cells 5 on each support platform 21 are aligned along the first direction X, ensuring the flatness of the battery cells 5.

[0068] The foregoing has provided a sufficiently detailed and specific description of this application. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within the protection scope of this application. The scope of protection claimed in this application is defined by the claims, not by the above descriptions in the embodiments. Furthermore, the embodiments mentioned in this application are not limited to a single implementation; some embodiments can also be combined.

Claims

1. A battery cell buffering and straightening device, characterized in that, The battery cell buffering and straightening device includes a frame, a conveying mechanism, a straightening mechanism, and a buffering mechanism, wherein: The conveying mechanism includes multiple carrier platforms and a first driving component. Each carrier platform is used to receive a battery cell, and the first driving component is used to drive the multiple carrier platforms to move along a first direction to a regularization station or a buffer station. The support platform is provided with auxiliary support rods on both sides along the second direction. The support platform and the auxiliary support rods are used to jointly support the battery cell. The second direction is perpendicular to the first direction on the horizontal plane. The straightening mechanism is mounted on the straightening station and is used to straighten the battery cells on the support platform located at the straightening station. The buffer mechanism is mounted on the buffer station. The buffer mechanism includes a second driving component and two parallel trays. On the side of the two trays that are close to each other, there are multiple adsorption trays that correspond one-to-one with the support platform. The movement trajectory of the support platform passes through the area between the two trays. The two trays are vertically and vertically mounted on the frame, and the second drive is configured to drive the two trays to descend synchronously to a position where the adsorption platform is lower than the auxiliary support rod, so as to avoid the movement trajectory of the support platform; When the support platform is located at the cache station, the auxiliary support rods on each support platform are arranged alternately with the corresponding adsorption support platform. The second driving member is also configured to drive the two support plates to rise synchronously to a position where the adsorption support platform is higher than the auxiliary support rods, so that the adsorption support platform can remove the battery cells from the support platform.

2. The battery cell buffering and straightening device as described in claim 1, characterized in that, The support platform is provided with a plurality of first adsorption holes, and the battery cells are adsorbed onto the support platform by negative pressure through the plurality of first adsorption holes. The adsorption platform is provided with a plurality of second adsorption holes, which adsorb the battery cells onto the adsorption platform by negative pressure.

3. The battery cell buffering and straightening device as described in claim 1, characterized in that, The auxiliary support rod includes a first support portion and a first extension portion. The first support portion is disposed on the side of the support platform and extends outward along the second direction. The first extension portion is disposed at the end of the first support portion and extends along the first direction. The adsorption platform includes a second support portion and a second extension portion. The second support portion is disposed on the side of the tray and extends outward along the second direction. The second extension portion is disposed at the end of the second support portion and extends along the first direction. The first extension and the second extension are oriented in opposite directions. The space formed between the first extension, the first support, and the support platform allows the second extension to pass vertically through it, and the space formed between the second extension, the second support, and the tray allows the first extension to pass vertically through it.

4. The cell buffering and straightening device as described in claim 3, characterized in that, The second adsorption hole is disposed on the second extension of each of the adsorption supports.

5. The battery cell buffering and straightening device as described in claim 3, characterized in that, The two first support portions on each of the bearing platforms are located on opposite sides of the bearing platform along the first direction, and the two first extension portions on each of the bearing platforms face opposite directions.

6. The battery cell buffering and straightening device as described in claim 1, characterized in that, The buffer mechanism also includes multiple movable plates, with each of the adsorption platforms fixed to one of the movable plates; The movable plate has an oblong hole extending along the first direction. The buffer mechanism also includes a bolt that passes through the oblong hole on the movable plate and is threadedly connected to the tray. The movable plate is detachably fixed to the tray by the bolt.

7. The cell buffering and straightening device as described in any one of claims 1-6, characterized in that, The conveying mechanism further includes multiple sliding seats, which are respectively installed on the driving end of the first driving member. Each of the carrier platforms is installed on one of the sliding seats. The first driving member is configured to drive the multiple sliding seats to slide along the first direction. There is a space between each sliding seat and the auxiliary support rod on the corresponding carrier platform for the adsorption support platform to pass horizontally.

8. The cell buffering and straightening device as described in claim 7, characterized in that, The first driving element is a linear motor module, and the first driving element is configured to drive the plurality of sliding seats to slide independently along the first direction.

9. The battery cell buffering and straightening device as described in claim 1, characterized in that, The second drive unit includes two lifting seats, a servo motor, a pulley assembly, and two sets of ball screw assemblies, wherein: The two pallets are respectively mounted on the two lifting seats, and the two lifting seats are movably mounted on the frame. The sliding sleeves of the two sets of ball screw assemblies are respectively fixedly connected to the two lifting seats. The servo motor and pulley assembly are driven on the frame. The servo motor drives the screws of two sets of ball screw assemblies to rotate through the pulley assembly, thereby driving the two lifting seats to rise and fall vertically.

10. The cell buffering and straightening device as described in claim 1, characterized in that, The straightening mechanism includes a straightening component and a third driving component. The straightening component is slidably mounted on the frame along the second direction. The third driving component is used to drive the straightening component to move closer to or further away from the battery cells on each of the bearing platforms on the straightening station along the second direction, so that the battery cells on each of the bearing platforms are aligned along the first direction.

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