Battery cell feeding device

Abstract

The application discloses an electric core feeding device, which comprises an electric core input unit, a feeding unit and an electric core output unit. The feeding unit transfers the electric cores in groups on the electric core input unit to the electric core output unit. The electric core output unit comprises a driving end, a driven end, a connecting profile, a synchronous belt and an electric core support frame. The driving end and the driven end are respectively arranged at the two ends of the connecting profile. The synchronous belt is sleeved between the driving end and the driven end and is driven to run by the driving end. The outer surface of the synchronous belt is provided with the electric core support frames at intervals. The electric core support frames in the approach stage place and support the electric cores. The electric cores in groups grabbed from the electric core input unit by the feeding unit are placed on the electric core support frames at the preset positions. The electric cores run with the synchronous belt to complete the feeding and conveying. The electric cores are grouped and stacked in the grouped grabbing mode. The grouping efficiency is improved by cooperating with the detection mechanism. Meanwhile, the damage risk of the device is reduced by cooperating with the buffer mechanism.

Description

Technical Field

[0001] This application is applied to the field of automated conveying, and specifically relates to a battery cell feeding device. Background Technology

[0002] In existing technologies, after mass-produced battery cells are input, they need to be clamped and assembled into trays before being transported to the next workstation. The process of loading and assembling battery cells into trays requires a conveying device and a robotic arm to grab them sequentially, which results in very low tray assembly efficiency and affects work efficiency. Summary of the Invention

[0003] In view of the above reasons, this application discloses a battery cell feeding device, including a battery cell input unit, a feeding unit, and a battery cell output unit. The feeding unit transfers groups of battery cells from the battery cell input unit to the battery cell output unit. The battery cell output unit includes a driving end, a driven end, a connecting profile, a synchronous belt, and a battery cell support frame. The driving end and the driven end are respectively disposed at both ends of the connecting profile. The synchronous belt is sleeved between the driving end and the driven end and is driven by the driving end. The battery cell support frame is provided at intervals on the outer surface of the synchronous belt. During the outward travel stage, the battery cell support frame places and supports the battery cells. The groups of battery cells picked up by the feeding unit from the battery cell input unit are placed on the battery cell support frame at a preset position. The battery cells are fed and conveyed by the synchronous belt.

[0004] Preferably, the battery cell output unit further includes a centering mechanism, which is located downstream of the preset position. The centering mechanism performs centering processing on the battery cells on the battery cell support frame. The centering mechanism includes a cylinder and a push block. The cylinders are respectively located on both sides of the connecting profile. The free end of the cylinder is located relative to the center of the synchronous belt. The push block is located on the free end of the cylinder. The height of the push block is the same as the height of the battery cell on the battery cell support frame. The free ends of the cylinders on both sides extend synchronously so that the push block contacts the two ends of the battery cell and pushes the battery cell toward the center of the synchronous belt.

[0005] Preferably, the cell output unit further includes a first detection mechanism and a second detection mechanism. The first detection mechanism includes a first detection piece, and a plurality of the first detection pieces are connected to the connecting profile. The positions of the plurality of first detection pieces correspond one-to-one with the positions of the cells corresponding to the preset positions, and are used to detect whether the cells have been placed in the preset positions. The second detection mechanism includes a plurality of second detection pieces, and the plurality of second detection pieces are disposed downstream of the connecting profile at the preset position. The second detection pieces are used to detect whether the cells exist on the cell support frame passing through the position.

[0006] Preferably, the battery cell support frame includes a connecting block and a support block. One end of the connecting block is fixedly connected to the outer surface of the synchronous belt, and the other end of the connecting block is provided with two oppositely arranged support blocks. The support blocks have an upward opening to accommodate the battery cell, and the relative directions of the two support blocks are on both sides of the synchronous belt conveying direction.

[0007] Preferably, the feeding unit includes a fixed bracket, a first horizontal linear motion module, a second horizontal linear motion module, a vertical linear motion module, a horizontal rotational motion module, and a clamping mechanism. The first horizontal linear motion module is connected to the ground through the fixed bracket. The second horizontal linear motion module moves horizontally back and forth in a first motion direction under the drive of the first horizontal linear motion module. The vertical linear motion module moves horizontally back and forth in a second motion direction under the drive of the second horizontal linear motion module. The horizontal rotational motion module moves back and forth in a vertical direction under the drive of the vertical linear motion module. The horizontal rotational motion module is connected to the clamping mechanism. The clamping mechanism can rotate horizontally under the drive of the horizontal rotational motion module. The clamping mechanism can clamp and place the battery cell. The first motion direction and the second motion direction are orthogonal in the horizontal projection plane.

[0008] Preferably, the clamping mechanism includes a horizontal variable pitch module and electric grippers. One end of the horizontal variable pitch module is connected to the horizontal rotation motion module, and the other end of the horizontal variable pitch module is provided with a plurality of electric grippers. The number of electric grippers corresponds to the number of battery cells clamped by the feeding unit in a single batch. The plurality of electric grippers can move relative to each other under the drive of the horizontal variable pitch module and maintain the same distance between the electric grippers.

[0009] Preferably, the electric gripper is connected to the horizontal pitch-changing module via a buffer mechanism. The buffer mechanism includes a first connecting plate, a linear bearing, a guide post, a spring, a limiting sleeve, and a second connecting plate. The first connecting plate is connected to the horizontal pitch-changing module. The linear bearing passes vertically through the first connecting plate. The guide post passes through the linear bearing and is fixedly connected to the upper end of the second connecting plate. A limiting sleeve is fitted on the end of the guide post near the second connecting plate. The spring is fitted on the guide post between the limiting sleeve and the first connecting plate. The second connecting plate is connected to the electric gripper. When the electric gripper is subjected to a vertically upward force, the second connecting plate and the guide post displace vertically upward and compress the spring, thereby buffering and protecting the electric gripper.

[0010] Preferably, the feeding unit further includes a third detection mechanism and a fourth detection mechanism. The third detection mechanism includes a third detection plate, which is disposed on one side of the electric gripper to determine whether there is a battery cell to be gripped at the current position of the electric gripper. The fourth detection mechanism includes a fourth detection plate, which is used to detect the positional change of the second connecting plate relative to the first connecting plate, thereby determining whether the electric gripper is subjected to an upward force.

[0011] Preferably, the battery cell input unit includes a hoist, a horizontal conveyor, and a battery cell tray. The horizontal conveyor is vertically displaced by the hoist. The battery cell tray is placed on the conveying surface of the horizontal conveyor and has a battery cell placement slot. The battery cells to be loaded are placed in the battery cell placement slot of the battery cell tray.

[0012] Preferably, the cell input unit further includes a double-layer conveyor. The lower conveyor of the double-layer conveyor transports the cell tray containing the cells to the horizontal conveyor located at a low stroke. The feeding unit clamps and transfers the cells on the cell tray to the preset position of the cell output unit. The elevator drives the horizontal conveyor and the empty cell tray to a high stroke and then outputs the empty cell tray to the upper conveyor of the double-layer conveyor.

[0013] The advantage of this application is that it uses a group grabbing method to assemble the battery cells into a tray, which, together with the testing mechanism, improves the tray assembly efficiency, while the buffer mechanism reduces the risk of device damage.

[0014] Other specific features and advantages of this application will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the above-described techniques of this disclosure.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this application.

[0018] Figure 2 This is a schematic diagram of the battery cell output unit structure of this application.

[0019] Figure 3 This is a schematic diagram of the cell support frame structure of this application.

[0020] Figure 4 This is a schematic diagram of the material feeding unit structure of this application.

[0021] Figure 5 This is a schematic diagram of the material feeding unit structure of this application.

[0022] Figure 6 This is a schematic diagram of the battery cell input unit structure of this application.

[0023] In the diagram: 1. Connecting profile; 2. Synchronous belt; 3. Cell support frame; 4. Drive wheel; 5. Drive motor; 6. Driven wheel; 7. Cell; 8. Cylinder; 9. Push block; 10. First detection plate; 11. Second detection plate; 12. Fixed bracket; 13. First horizontal linear motion module; 14. Second horizontal linear motion module; 15. Vertical linear motion module; 16. Horizontal rotary motion module; 17. Linear guide rail; 18. Horizontal variable pitch module; 19. Electric gripper; 20. First connecting plate; 21. Linear bearing; 22. Guide post; 23. Spring; 24. Limit sleeve; 25. Second connecting plate; 26. Limiting component; 27. Third detection plate; 28. Fourth detection plate; 29. ​​Elevator; 30. Horizontal conveyor; 31. Cell tray; 32. Double-layer conveyor; 3201. Upper conveyor line; 3202. Lower conveyor line. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figures 1 to 6The shown battery cell loading device transports battery cells produced on the mass production line to a designated position via a battery cell input unit. The loading unit then transfers the grouped battery cells from the input unit to the output unit, which then drives them to subsequent workstations. The output unit includes a drive end, a driven end, a connecting profile 1, a timing belt 2, and a battery cell support frame 3. The drive end includes a drive wheel 4 and a drive motor 5, and the driven end includes a driven wheel 6. The drive wheel 4 and driven wheel 6 are respectively located at both ends of the connecting profile 1 along its length. The connecting profile 1 can be an aluminum profile with a supporting connection function, and its length can be determined based on actual needs. The timing belt 2... The synchronous belt 2 is a ring belt, fitted between the drive wheel 4 and the driven wheel 6. The drive wheel 4 is driven to rotate by the drive motor 5, thereby driving the driven wheel 6 and the synchronous belt 2 to rotate. Cell support frames 3 are spaced apart on the outer surface of the synchronous belt 2. The cell support frames 3 located in the outward direction of the synchronous belt support the cells 7. At a predetermined position, groups of cells 7 are transferred to the corresponding cell support frames 3 via a feeding unit. After placement, the synchronous belt 2 runs, driving subsequent empty cell support frames 3 to the predetermined position and receiving subsequent groups of cells 7. The cells 7 are then driven to the subsequent workstation by the synchronous belt 2 and the cell support frames 3. The predetermined position is upstream of the cell output unit. In this application, the conveying direction of the synchronous belt is from the drive end to the driven end, and the predetermined position is near the drive end.

[0026] In some implementations, such as Figure 1 and Figure 2 As shown, the battery cell input unit includes a centering mechanism. The centering mechanism acts on the battery cell 7 on the battery cell support frame 3, adjusting the position of the battery cell 7 so that the center of the battery cell 7 is the same as the center of the synchronous belt 2, that is, the two ends of the battery cell 7 are equidistant from the center of motion of the synchronous belt 2. The centering mechanism is positioned downstream of the predetermined position, that is, the centering position is between the predetermined position and the driven end position and close to the predetermined position. The centering mechanism includes a cylinder 8 and a push block 9. The cylinder 8 is a three-axis cylinder of the same specification. The two cylinders 8 are connected to the connecting profile 1 through a cylinder fixing plate. Next, two cylinders 8 are located on both sides of the synchronous belt 2, with their free ends facing each other. The free ends of the cylinders 8 are equipped with push blocks 9. The height of the push blocks 9 is the same as the height of the battery cell 7 on the battery cell support frame 3. In the initial state, the distance between the push blocks 9 on both sides and the center of the synchronous belt 2 is the same. When the battery cell 7 passes the position of the push blocks 9 on the battery cell support frame 3, the push blocks 9 on both sides are pushed out synchronously under the drive of the cylinders 8 on both sides. The push blocks 9 contact the two ends of the battery cell 7 and push the battery cell 7 towards the center of the synchronous belt 2, ensuring that the battery cell 7 is in the center position during the output process, which is convenient for subsequent process operations.

[0027] In some implementations, such as Figure 1 and Figure 2As shown, the cell output mechanism also includes a first detection mechanism and a second detection mechanism. The first detection mechanism is a first detection piece 10, which is connected to the connecting profile 1 via a detection piece frame. The position of the first detection piece 10 corresponds to a preset position. In this application, the cells 7 are grouped in sets of four, meaning the preset position corresponds to four cells 7. The four first detection pieces 10 correspond one-to-one with the positions of the four cells 7 at the preset positions, and are used to detect whether the four cells 7 in the group have been placed on the four cell support frames 3 at the corresponding positions. The start and stop of the drive motor 5 are controlled according to the detection signal. The second detection mechanism includes a second detection piece 11, which is connected to the connecting profile 1 via a detection piece frame. The position of the second detection piece 11 is located downstream of the cell output unit. The second detection piece 11 is used to detect whether there are cells 7 on the cell support frame 3 passing through this position. If cells 7 are present, it indicates that the feeding is normal. If any cells 7 are missing, it indicates that there is a problem in the feeding process, and an inspection is required.

[0028] In some implementations, such as Figures 1 to 3 As shown, the battery cell support frame 3 includes a connecting block 301 and a support block 302. The lower end of the connecting block 301 is fixedly connected to the outer surface of the synchronous belt 2. The upper end of the connecting block 301 is provided with two opposing support blocks 302. The support blocks 302 have a V-shaped structure with an upward opening. The two opposing support blocks 302 can accommodate and place the lower part of the battery cell 7. The relative direction of the two support blocks 302 is on both sides of the conveying direction of the synchronous belt 2, that is, the battery cell 7 is placed on the support block 302 with its length direction as the horizontal orthogonal to the conveying direction of the synchronous belt 2.

[0029] In some implementations, such as Figure 1 and Figure 4As shown, the loading unit includes a fixed bracket 12, a first horizontal linear motion module 13, a second horizontal linear motion module 14, a vertical linear motion module 15, a horizontal rotational motion module 16, and a clamping mechanism. The first horizontal linear motion module 13 is connected to the ground via the fixed bracket 12. The first horizontal linear motion module 13 can drive the second horizontal linear motion module 14 to move horizontally back and forth in a first motion direction. The second horizontal linear motion module 14 cooperates with the linear guide rail 17 for auxiliary guidance in the first motion direction. The first motion direction is the x-axis direction in this application. The second horizontal linear motion module 14 can drive the vertical linear motion module 15 in a second... The horizontal reciprocating motion is in the first direction, and the second direction of motion is the y-axis direction in this application. The horizontal rotation motion module 16 moves back and forth in the vertical direction under the drive of the vertical linear motion module 15, that is, the direction of motion of the horizontal rotation motion module 16 is the z-axis direction. The horizontal rotation motion module 16 can drive the clamping mechanism to rotate horizontally. The clamping mechanism is used to clamp and place the group of battery cells 7. That is, the clamping structure can be positioned at any position within a predetermined range of space under the combined drive of the first horizontal linear motion module 13, the second horizontal linear motion module 14, the vertical linear motion module 15 and the horizontal rotation motion module 16. The position of the clamping mechanism is flexible.

[0030] In some implementations, such as Figure 4 As shown, the gripping mechanism includes a horizontal variable pitch module 18 and electric grippers 19. The upper end of the horizontal variable pitch module 18 is connected to the horizontal rotation motion module 16 and can rotate horizontally under the drive of the horizontal rotation motion module 16. The lower end of the horizontal variable pitch module 18 is provided with four electric grippers 19. Under the drive of the horizontal variable pitch module 18, the four electric grippers 19 can perform relative displacement and keep the distance between adjacent electric grippers 19 equal. By adjusting the relative distance between each electric gripper 19 through the horizontal variable pitch module 18, it can be adjusted for different gripping position requirements, thereby improving operational flexibility.

[0031] In some implementations, such as Figure 4 and Figure 5As shown, the electric gripper 19 is connected to the horizontal pitch-changing module 18 via a buffer mechanism. The buffer mechanism includes a first connecting plate 20, a linear bearing 21, a guide post 22, a spring 23, a limiting sleeve 24, and a second connecting plate 25. The first connecting plate 20 and the second connecting plate 25 are arranged vertically and alternately. The first connecting plate 20 is connected to and driven by the horizontal pitch-changing module 18. The linear bearing 21 passes vertically through the first connecting plate 20, and the guide post 22 passes vertically through the linear shaft. The lower end of the guide post 22 is fixedly connected to the upper end of the second connecting plate 25. The upper end of the guide post 22 is provided with a limiting member 26 to limit its upper end to the outside of the linear bearing 21. A limiting sleeve 24 is sleeved on one end of the guide post 22 near the second connecting plate 25. A spring 23 is sleeved on the guide post 22 between the limiting sleeve 24 and the lower surface of the first connecting plate 20. That is, the two ends of the spring 23 abut against the limiting sleeve 24 and the first connecting plate 20 respectively. The electric gripper 19 is provided at the lower end of the second connecting plate 25. During normal feeding operation, the electric gripper 19 will not come into contact with non-cell components. However, if the electric gripper 19 descends too far, it may come into contact with other components. In this case, the electric gripper 19 will be subjected to a vertically upward force. At this time, the electric gripper 19, the second connecting plate 25, and the limiting sleeve 24 will run along the guide line of the guide post 22. The spring 23 will be in a compressed state to buffer the force on the electric gripper 19, greatly reducing the damage to the electric gripper 19.

[0032] In some implementations, such as Figure 5 As shown, the feeding unit also includes a third detection mechanism and a fourth detection mechanism. The third detection mechanism is a third detection plate 27, which is set on one side of the gripper of the electric gripper 19 via a detection plate holder. The third detection plate 27 is used to determine whether there is a battery cell 7 to be gripped at the current position of the electric gripper 19, and controls the position of the electric gripper 19 based on feedback. The fourth detection mechanism is a fourth detection plate 28, which is set between the second connecting plate 25 and the first connecting plate 20. The fourth detection plate 28 is used to detect the positional change of the second connecting plate 25 relative to the first connecting plate 20, thereby determining whether the electric gripper 19 is subjected to a vertically upward force, i.e., whether the buffer mechanism is in effect. If it is in effect, it indicates that there is a problem with the position of the electric gripper 19, which needs to be further analyzed and resolved.

[0033] In some implementations, such as Figure 1 and Figure 6As shown, the battery cell input unit includes a hoist 29, a horizontal conveyor 30, and a battery cell tray 31. The horizontal conveyor 30 is mounted on the bracket of the hoist 29 and moves vertically back and forth under the drive of the hoist 29. The horizontal conveyor 30 is used to transport the battery cell tray 31. The battery cell tray 31 runs to the conveying surface of the horizontal conveyor 30. The upper surface of the battery cell tray 31 is provided with several arrays of battery cell placement slots. The battery cells 7 to be loaded are placed in the battery cell placement slots of the battery cell tray 31, waiting for the electric grippers 19 to grasp them in groups sequentially. The specific design of the hoist 29 and the horizontal conveyor 30 is not limited.

[0034] In some implementations, such as Figure 1 and Figure 6 As shown, the battery cell conveying unit also includes a double-layer conveyor 32, which has an upper conveyor line 3201 and a lower conveyor line 3202. The upper conveyor line 3201 and the lower conveyor line 3202 correspond to the high stroke position and the low stroke position of the horizontal conveyor 30 on the elevator 29, respectively. The battery cell tray 31 with battery cells 7 is conveyed from the outside to the horizontal conveyor 30 located at the low stroke position through the lower conveyor line 3202. The feeding unit grabs the battery cells 7 on the battery cell tray 31 in groups and sends them to the battery cell output unit. After all the battery cells 7 have been grabbed, the elevator 29 drives the horizontal conveyor 30 and the empty battery cell tray 31 to the high stroke position. Then, the battery cell tray 31 is transferred to the upper conveyor line 3201 through the horizontal conveyor 30. It should be noted that the gripping position of the battery cell 7 can also be when the battery cell tray 31 and the horizontal conveyor 30 are in the high stroke position. Similarly, the battery cell tray 31 can be in the upper part and out the lower part on the double-layer conveyor 32. It can be flexibly applied according to the actual working conditions and there are no specific restrictions.

[0035] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.

Claims

1. A battery cell feeding device, characterized in that, The device includes a cell input unit, a feeding unit, and a cell output unit. The feeding unit transfers groups of cells from the cell input unit to the cell output unit. The cell output unit includes a driving end, a driven end, a connecting profile, a synchronous belt, and a cell support frame. The driving end and the driven end are respectively located at both ends of the connecting profile. The synchronous belt is sleeved between the driving end and the driven end and is driven by the driving end. The cell support frame is spaced apart on the outer surface of the synchronous belt. During the outward travel phase, the cell support frame places and supports the cells. The groups of cells picked up from the cell input unit by the feeding unit are placed on the cell support frame at a preset position. The cells are fed and transported by the synchronous belt.

2. The cell feeding device according to claim 1, characterized in that, The battery cell output unit further includes a centering mechanism, which is located downstream of the preset position. The centering mechanism performs centering processing on the battery cells on the battery cell support frame. The centering mechanism includes a cylinder and a push block. The cylinders are respectively located on both sides of the connecting profile. The free end of the cylinder is located relative to the center of the synchronous belt. The push block is located on the free end of the cylinder. The height of the push block is the same as the height of the battery cell on the battery cell support frame. The free ends of the cylinders on both sides extend synchronously so that the push block contacts the two ends of the battery cell and pushes the battery cell toward the center of the synchronous belt.

3. The cell feeding device according to claim 1, characterized in that, The cell output mechanism further includes a first detection mechanism and a second detection mechanism. The first detection mechanism includes a first detection piece, and a plurality of the first detection pieces are connected to the connecting profile. The positions of the plurality of first detection pieces correspond one-to-one with the positions of the cells corresponding to the preset positions, and are used to detect whether the cells have been placed in the preset positions. The second detection mechanism includes a plurality of second detection pieces, and the plurality of second detection pieces are disposed on the connecting profile downstream of the preset positions. The second detection pieces are used to detect whether the cells exist on the cell support frame passing through the positions.

4. The cell feeding device according to claim 1, characterized in that, The battery cell support frame includes a connecting block and a support block. One end of the connecting block is fixedly connected to the outer surface of the synchronous belt, and the other end of the connecting block is provided with two oppositely arranged support blocks. The support blocks have an upward opening to accommodate the battery cell, and the relative directions of the two support blocks are on both sides of the synchronous belt conveying direction.

5. The cell feeding device according to claim 1, characterized in that, The feeding unit includes a fixed bracket, a first horizontal linear motion module, a second horizontal linear motion module, a vertical linear motion module, a horizontal rotational motion module, and a clamping mechanism. The first horizontal linear motion module is connected to the ground through the fixed bracket. The second horizontal linear motion module moves horizontally back and forth in a first motion direction under the drive of the first horizontal linear motion module. The vertical linear motion module moves horizontally back and forth in a second motion direction under the drive of the second horizontal linear motion module. The horizontal rotational motion module moves back and forth in a vertical direction under the drive of the vertical linear motion module. The horizontal rotational motion module is connected to the clamping mechanism, which can rotate horizontally under the drive of the horizontal rotational motion module. The clamping mechanism can clamp and place the battery cell. The first motion direction and the second motion direction are orthogonal in the horizontal projection plane.

6. The cell feeding device according to claim 5, characterized in that, The clamping mechanism includes a horizontal variable pitch module and electric grippers. One end of the horizontal variable pitch module is connected to the horizontal rotation motion module, and the other end of the horizontal variable pitch module is provided with a plurality of electric grippers. The number of electric grippers corresponds to the number of battery cells clamped by the feeding unit in a single batch. The plurality of electric grippers can move relative to each other under the drive of the horizontal variable pitch module and keep the distance between the electric grippers the same.

7. The cell feeding device according to claim 6, characterized in that, The electric gripper is connected to the horizontal pitch-changing module via a buffer mechanism. The buffer mechanism includes a first connecting plate, a linear bearing, a guide post, a spring, a limiting sleeve, and a second connecting plate. The first connecting plate is connected to the horizontal pitch-changing module. The linear bearing passes vertically through the first connecting plate. The guide post passes through the linear bearing and is fixedly connected to the upper end of the second connecting plate. A limiting sleeve is fitted on the end of the guide post near the second connecting plate. The spring is fitted on the guide post between the limiting sleeve and the first connecting plate. The second connecting plate is connected to the electric gripper. When the electric gripper is subjected to a vertically upward force, the second connecting plate and the guide post displace vertically upward and compress the spring, thereby buffering and protecting the electric gripper.

8. The cell feeding device according to claim 7, characterized in that, The feeding process also includes a third detection mechanism and a fourth detection mechanism. The third detection mechanism includes a third detection plate, which is disposed on one side of the electric gripper to determine whether there is a battery cell to be gripped at the current position of the electric gripper. The fourth detection mechanism includes a fourth detection plate, which is used to detect the positional change of the second connecting plate relative to the first connecting plate, thereby determining whether the electric gripper is subjected to an upward force.

9. The cell feeding device according to claim 1, characterized in that, The battery cell input unit includes a hoist, a horizontal conveyor, and a battery cell tray. The horizontal conveyor is moved vertically under the drive of the hoist. The battery cell tray is placed on the conveying surface of the horizontal conveyor and is provided with a battery cell placement slot. The battery cells to be loaded are placed in the battery cell placement slot of the battery cell tray.

10. The cell feeding device according to claim 9, characterized in that, The cell input unit also includes a double-layer conveyor. The lower conveyor of the double-layer conveyor transports the cell tray containing the cells to the horizontal conveyor located at a low stroke. The feeding unit clamps and transfers the cells on the cell tray to the preset position of the cell output unit. The elevator drives the horizontal conveyor and the empty cell tray to a high stroke and then outputs the empty cell tray to the upper conveyor of the double-layer conveyor.

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