Battery cell feeding device and battery production system

Abstract

The utility model relates to the field of battery production equipment, in particular to a battery cell feeding device and a battery production system. The battery cell feeding device comprises a lifting mechanism, a clamping mechanism and a limiting mechanism; the lifting mechanism is used for driving the clamping mechanism to lift relative to the limiting mechanism; the clamping mechanism comprises a first clamping assembly and a second clamping assembly, the first clamping assembly is used for clamping the head end of the battery cell air bag, the second clamping assembly is used for clamping the tail end of the battery cell air bag, and the first clamping assembly and the second clamping assembly can move relatively in the head-tail direction of the battery cell air bag so that the first clamping assembly and the second clamping assembly can get close to each other or get away from each other; and the limiting mechanism is correspondingly provided with a limiting gap to limit the battery cell body. According to the battery cell feeding device provided by the invention, when a battery cell is fed, an inclined battery cell air bag can be straightened and smoothed, and the situation that the battery cell is damaged due to the fact that the air bag is inclined during clamping is avoided; and the battery cell body can be limited and guided in the battery cell moving process, so that the battery cell is prevented from being collided and damaged when the battery cell is placed on the baking tray.

Description

Technical Field

[0001] The present application relates to the field of battery production equipment, and in particular to a battery cell feeding device and a battery production system. Background Art

[0002] In the production process of soft-pack lithium batteries, the battery cells must be baked to remove moisture from the pole pieces because high moisture content will affect the battery internal resistance and cycle life, and will cause problems such as battery expansion and corrosion. When baking a battery cell with a single-side tab, the battery cell needs to be loaded from the material frame to the baking tray (the tray is provided with a heat conduction plate between adjacent battery cells), and then the battery cell is unloaded from the baking tray back to the empty material frame (the material frame is provided with a fixing block between adjacent battery cells) after baking.

[0003] Due to the large difference in the spatial layout of the material frame and the pallet, as well as problems such as skewed air bags and no grabbing space at the bottom of the battery cells with single-sided tabs during transportation, most existing technologies use manual or semi-automatic methods to remove and discharge the battery cells, which has low efficiency and can easily damage the battery cells, resulting in product scrapping. Utility Model Content

[0004] The purpose of the present application is to provide a battery cell loading device and a battery production system, which, in response to the baking process requirements of single-side tab soft-pack batteries, provides a method with high gripping efficiency and avoidance of battery cell damage to complete the loading of the battery cells.

[0005] The present application provides a battery cell feeding device, including a lifting mechanism, a clamping mechanism and a limiting mechanism;

[0006] The lifting mechanism is used to drive the clamping mechanism to rise and fall relative to the limiting mechanism;

[0007] The clamping mechanism includes a first clamping assembly and a second clamping assembly, wherein the first clamping assembly is used to clamp the head end of the battery cell air bag, and the second clamping assembly is used to clamp the tail end of the battery cell air bag, and the first clamping assembly and the second clamping assembly can move relative to each other along the head-to-tail direction of the battery cell air bag so that the two are close to each other or away from each other;

[0008] The limiting mechanism is correspondingly provided with a limiting gap to limit the battery cell body.

[0009] In the above technical solution, further, the clamping mechanism also includes a first bracket, a first screw assembly and a first driving device;

[0010] The lifting mechanism is connected to the first bracket; the first screw assembly and the first driving device are installed on the first bracket, and the length direction of the first screw assembly is the head and tail direction of the battery core air bag; the first driving device is used to drive the screw of the first screw assembly to rotate;

[0011] The first clamping assembly and / or the second clamping assembly is connected to the nut of the first screw assembly; when one of the first clamping assembly and the second clamping assembly is connected to the first screw assembly, the first clamping assembly or the second clamping assembly not connected to the first screw assembly is connected to the first bracket;

[0012] When the first clamping assembly and the second clamping assembly are both connected to the first screw assembly, the screw of the first screw assembly is provided with two threaded sections with opposite rotation directions, and both threaded sections are sleeved with nuts to be respectively connected to the first clamping assembly and the second clamping assembly.

[0013] In the above technical solution, further, the clamping mechanism also includes a first guide rail assembly;

[0014] The first guide rail assembly is installed on the first bracket, the guiding direction of the first guide rail assembly is the head and tail direction of the battery cell air bag, and the first clamping assembly and / or the second clamping assembly are connected to the slider of the first guide rail assembly.

[0015] In the above technical solution, further, the first clamping assembly includes a first integrated board and at least one first clamping claw module, the first integrated board is connected to the nut of the first screw assembly or the first bracket; the first clamping claw module is installed on the first integrated board, and when the number of the first clamping claw modules is multiple, the multiple first clamping claw modules are correspondingly arranged along the arrangement direction of the battery cells;

[0016] The second clamping assembly includes a second integrated board and at least one second clamping jaw module, and the second integrated board is connected to the nut of the first screw assembly or the first bracket; the second clamping jaw module is installed on the second integrated board, and when there are multiple second clamping jaw modules, the multiple second clamping jaw modules are correspondingly arranged along the arrangement direction of the battery cells.

[0017] In the above technical solution, further, the clamping jaw portion of the first clamping jaw module and / or the clamping jaw portion of the second clamping jaw module are bent so that the clamping jaw portion of the first clamping jaw module and the clamping jaw portion of the second clamping jaw module can fit together;

[0018] The clamping surface of the first clamping jaw module is provided with a soft pad; the clamping surface of the second clamping jaw module is provided with a soft pad.

[0019] In the above technical solution, further, the limiting mechanism includes a second bracket, a first limiting assembly and a second limiting assembly, and the first limiting assembly and the second limiting assembly are installed on the second bracket;

[0020] The first limiting component is provided with a first limiting gap to limit the front end of the battery cell body; the second limiting component is provided with a second limiting gap to limit the rear end of the battery cell body.

[0021] In the above technical solution, further, the first limiting assembly includes limiting blocks spaced apart from each other on the second bracket, the first limiting gap is formed between the limiting blocks, a pole ear connected to the main body is provided at the head end of the cell body, and the first limiting gap covers the pole ear and the connection between the main body and the pole ear;

[0022] The second limiting assembly includes limiting plates spaced apart from the second bracket, and the second limiting gap is formed between the limiting plates.

[0023] In the above technical solution, further, the lifting mechanism includes a second screw rod assembly and a second driving device;

[0024] The second screw rod assembly and the second driving device are installed on the second bracket, and the length direction of the second screw rod assembly is the vertical direction; the second driving device is used to drive the screw of the second screw rod assembly to rotate;

[0025] The clamping mechanism is connected to the nut of the second screw assembly.

[0026] In the above technical solution, further, the lifting mechanism also includes a second guide rail assembly;

[0027] The second guide rail assembly is installed on the second bracket, and the guiding direction of the second guide rail assembly is the vertical direction; the clamping mechanism is connected to the slider of the second guide rail assembly.

[0028] The present application also provides a battery production system, comprising the battery cell loading device described in the above scheme.

[0029] Compared with the prior art, the beneficial effects of this application are:

[0030] The battery cell loading device provided in the present application can straighten and level the crooked battery cell air bag when loading the battery cell, so as to avoid the air bag from being crooked and damaging the battery cell when clamping; and can limit and guide the battery cell body during the process of moving the battery cell, so as to avoid the battery cell being damaged by bumps when placing the battery cell on the baking tray.

[0031] The present application also provides a battery production system, including the battery cell feeding device described in the above solution. Based on the above analysis, it can be seen that the battery production system also has the above beneficial effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A first structural schematic diagram of the battery cell feeding device provided in the present application;

[0034] Figure 2 A second structural schematic diagram of the battery cell feeding device provided in this application;

[0035] Figure 3 A third structural schematic diagram of the battery cell feeding device provided in this application;

[0036] Figure 4 This is a fourth structural schematic diagram of the battery cell feeding device provided in this application.

[0037] In the figure: 101-first clamping assembly; 102-second clamping assembly; 103-first bracket; 104-first screw assembly; 105-first driving device; 106-belt assembly; 107-first guide rail assembly; 108-first integrated board; 109-first jaw module; 110-second integrated board; 111-second jaw module; 112-jaw part; 113-second bracket; 114-first limiting assembly; 115-second limiting assembly; 116-first limiting gap; 117-second limiting gap; 118-limiting block; 119-limiting plate; 120-second screw assembly; 121-second guide rail assembly. DETAILED DESCRIPTION

[0038] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] Embodiment 1

[0042] The battery cell loading device provided in the present application can be installed at the movable end of the manipulator. Driven by the manipulator, the battery cell loading device can take out the battery cells in the material frame and load them into the baking tray to bake the battery cells, thereby removing moisture from the battery cells. Since the gaps between the battery cells in the material frame are large, and the gaps between the battery cells in the baking tray are small, when loading the battery cells onto the baking tray, the accuracy of the placement of the battery cells is required to be high.

[0043] See also Figures 1 to 4 As shown, the battery cell feeding device includes a lifting mechanism, a clamping mechanism and a limiting mechanism. The lifting mechanism is used to drive the clamping mechanism to rise and fall relative to the limiting mechanism; the clamping mechanism includes a first clamping component 101 and a second clamping component 102, the first clamping component 101 is used to clamp the head end of the battery cell air bag, and the second clamping component 102 is used to clamp the tail end of the battery cell air bag, and the first clamping component 101 and the second clamping component 102 can move relative to each other along the head and tail direction of the battery cell air bag so that the two are close to each other or away from each other; the limiting mechanism is correspondingly provided with a limiting gap to limit the battery cell body.

[0044] Specifically, the battery cell loading device includes a lifting mechanism, a clamping mechanism and a limiting mechanism. In the specific production process, the battery cell loading process includes three steps: material collection, material transfer and material placement.

[0045] In the material picking step, when the battery cell loading device is moved to the top of the material frame by the robot, the position of the limiting mechanism remains stationary, and the lifting mechanism can drive the clamping mechanism to descend relative to the limiting mechanism so that the clamping mechanism enters the material frame, thereby clamping the battery cell air bag in the material frame.

[0046] In the initial state of the clamping mechanism, the first clamping assembly 101 and the second clamping assembly 102 are close to each other. After the clamping mechanism enters the material frame, the battery cell air bag enters the clamping gap between the first clamping assembly 101 and the second clamping assembly 102, and then the first clamping assembly 101 and the second clamping assembly 102 are clamped along the head and tail direction of the battery cell air bag ( Figure 1 The first clamping assembly 101 moves away from each other to straighten and level the battery cell airbag. When the first clamping assembly 101 moves to the front end of the battery cell airbag (corresponding to the front end of the battery cell body, i.e., the terminal end of the tab), the front end of the battery cell airbag can be clamped; when the second clamping assembly 102 moves to the rear end of the battery cell airbag (corresponding to the rear end of the battery cell body, i.e., the other end of the terminal end), the rear end of the battery cell airbag can be clamped. This operation can prevent the battery cell airbag from tilting and affecting the reliability of the battery cell clamping, thereby avoiding damage to the battery cell during grabbing.

[0047] After clamping the battery cell air bag, the lifting mechanism drives the clamping mechanism to rise relative to the limiting mechanism to remove the battery cell from the material frame. During the rising process of the lifting mechanism, the battery cell body gradually enters the limiting gap set by the limiting mechanism, which can prevent the battery cell body from deflecting during movement.

[0048] In the material transfer step, the robot moves the battery cell loading device holding the battery cells to the top of the baking tray.

[0049] In the discharge step, when the battery cell loading device is moved to the top of the baking tray by the manipulator, the position of the limiting mechanism remains unchanged, and the lifting mechanism can drive the clamping mechanism to descend relative to the limiting mechanism so that the clamping mechanism enters the baking tray, so that the battery cell can be placed in the baking position of the baking tray. During the descent of the clamping mechanism, the limiting gap set by the limiting mechanism can guide the battery cell body, thereby preventing the battery cell body from shifting during movement. After the clamping mechanism releases the battery cell air bag, the lifting mechanism drives the clamping mechanism to rise relative to the limiting mechanism. The first clamping assembly 101 and the second clamping assembly 102 move closer to each other and return to the initial state of the clamping mechanism. After the above steps, the entire battery cell loading process is completed.

[0050] The battery cell loading device provided in the present application can straighten and level the crooked battery cell air bag when loading the battery cell, so as to avoid the air bag from being crooked and damaging the battery cell when clamping; and can limit and guide the battery cell body during the process of moving the battery cell, so as to avoid the battery cell being damaged by bumps when placing the battery cell on the baking tray.

[0051] In the optional scheme of this embodiment, the clamping mechanism also includes a first bracket 103, a first screw assembly 104 and a first drive device 105. The first screw assembly 104 and the first drive device 105 are installed on the first bracket 103, and the first bracket 103 is connected to the lifting mechanism so that the lifting mechanism can drive the clamping mechanism to lift and lower as a whole. Specifically, the first drive device 105 is a servo motor, and the first drive device 105 is connected to the screw of the first screw assembly 104 through a belt assembly 106 to drive the screw to rotate, and the length direction of the first screw assembly 104 is the head and tail direction of the battery cell air bag. In order to achieve that the first clamping assembly 101 and the second clamping assembly 102 can approach or move away from each other, the following three schemes are specifically included:

[0052] Solution 1: The first clamping assembly 101 moves, and the second clamping assembly 102 does not move. Specifically, the first clamping assembly 101 is connected to the nut of the first screw assembly 104, and the second clamping assembly 102 is connected to the first bracket 103. In the initial state of the clamping mechanism, the first clamping assembly 101 and the second clamping assembly 102 are both opposite to the tail end of the battery air bag. When the first driving device 105 drives the screw of the first screw assembly 104 to rotate, the first clamping assembly 101 moves along the head-to-tail direction of the battery air bag, and the position of the second clamping assembly 102 remains unchanged.

[0053] Solution 2: The second clamping assembly 102 moves, and the first clamping assembly 101 does not move. Specifically, the second clamping assembly 102 is connected to the nut of the first screw assembly 104, and the first clamping assembly 101 is connected to the first bracket 103. In the initial state of the clamping mechanism, the first clamping assembly 101 and the second clamping assembly 102 are both opposite to the head end of the battery air bag. When the first driving device 105 drives the screw of the first screw assembly 104 to rotate, the second clamping assembly 102 moves along the head and tail direction of the battery air bag, and the position of the first clamping assembly 101 remains unchanged.

[0054] Solution three: The first clamping assembly 101 and the second clamping assembly 102 move synchronously, and the movement directions of the first clamping assembly 101 and the second clamping assembly 102 are opposite. Specifically, the screw of the first screw assembly 104 is provided with two threaded sections with opposite rotation directions, and the two threaded sections are both sleeved with nuts, and the two nuts are respectively connected to the first clamping assembly 101 and the second clamping assembly 102. In the initial state of the clamping mechanism, the first clamping assembly 101 and the second clamping assembly 102 are located in the middle of the screw. When the first driving device 105 drives the screw of the first screw assembly 104 to rotate, the first clamping assembly 101 and the second clamping assembly 102 both move along the head and tail direction of the battery cell airbag, but the movement directions of the two are opposite.

[0055] In an optional scheme of this embodiment, the clamping mechanism also includes a first guide rail assembly 107, which is installed on the first bracket 103, and the guiding direction of the first guide rail assembly 107 is the head and tail direction of the battery cell air bag. The first clamping assembly 101 and / or the second clamping assembly 102 are connected to the slider of the first guide rail assembly 107. When the nut of the first screw assembly 104 drives the first clamping assembly 101 and / or the second clamping assembly 102 to move, the first guide rail assembly 107 can guide the movement of the first clamping assembly 101 and / or the second clamping assembly 102 to make the movement smoother and more reliable.

[0056] In an optional scheme of this embodiment, the first clamping assembly 101 includes a first integrated board 108 and at least one first clamping module 109, and the first integrated board 108 is connected to the nut of the first screw assembly 104 or the first bracket 103; the first clamping module 109 is installed on the first integrated board 108, and when the number of the first clamping modules 109 is multiple, the multiple first clamping modules 109 are correspondingly arranged along the arrangement direction of the battery cells; the second clamping assembly 102 includes a second integrated board 110 and at least one second clamping module 111, and the second integrated board 110 is connected to the nut of the first screw assembly 104 or the first bracket 103; the second clamping module 111 is installed on the second integrated board 110, and when the number of the second clamping modules 111 is multiple, the multiple second clamping modules 111 are correspondingly arranged along the arrangement direction of the battery cells.

[0057] In this embodiment, in order to achieve mass production, a plurality of stacked cells are inserted in the material frame and the baking tray, and a plurality of first clamping jaw modules 109 are arranged along the direction of arrangement of the cells ( Figure 2 The second clamping jaw modules 111 are arranged correspondingly along the arrangement direction of the battery cells, and can clamp multiple battery cells at the same time to improve the transportation efficiency.

[0058] In the optional solution of this embodiment, the clamping jaw portion 112 of the first clamping jaw module 109 and / or the clamping jaw portion 112 of the second clamping jaw module 111 are bent so that the clamping jaw portion 112 of the first clamping jaw module 109 and the clamping jaw portion 112 of the second clamping jaw module 111 can fit together. When the battery cell air bag is straightened and smoothed, the first clamping assembly 101 and the second clamping assembly 102 move from the fitting state to the separation state, which has a better effect on the straightening and smoothing of the battery cell air bag. Optionally, the clamping jaw portion 112 of the first clamping jaw module 109 or the clamping jaw portion 112 of the second clamping jaw module 111 near the edge of the material frame is bent to avoid the edge of the material frame, thereby avoiding interference and collision.

[0059] Furthermore, the clamping surface of the first clamping jaw module 109 is provided with a soft pad, and the clamping surface of the second clamping jaw module 111 is provided with a soft pad to avoid indentation during clamping. Optionally, the soft pad is made of elastomeric or silicone material.

[0060] Embodiment 2

[0061] The battery cell loading device in the second embodiment is an improvement on the above embodiment, and the technical contents disclosed in the above embodiment will not be described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the second embodiment.

[0062] In the optional scheme of this embodiment, the limiting mechanism includes a second bracket 113, a first limiting component 114 and a second limiting component 115, the first limiting component 114 and the second limiting component 115 are installed on the second bracket 113, and the first limiting component 114 and the second limiting component 115 are arranged corresponding to the first clamping component 101 and the second clamping component 102. The first limiting component 114 is provided with a first limiting gap 116 to limit the front end of the battery cell body. The second limiting component 115 is provided with a second limiting gap 117 to limit the rear end of the battery cell body. In the process of the clamping mechanism driving the battery cell to rise and fall, the first limiting gap 116 can guide the front end of the battery cell body, and the second limiting gap 117 can guide the rear end of the battery cell body, which has a better straightening effect on the battery cell body.

[0063] Two rows of stacked cells are inserted into the material frame, and the directions of the two rows of cell tabs are opposite to each other. Figure 1 The cell loading device shown in the figure is provided with a group of arranged first clamping components 101 and arranged second clamping components 102 on the left side of the second limiting component 115, and a group of arranged first clamping components 101 and arranged second clamping components 102 on the right side of the second limiting component 115. The two groups of structures are symmetrically arranged to respectively clamp the multiple cell stacked in two rows inserted in the material frame, so as to further improve the efficiency of cell loading.

[0064] In the optional scheme of this embodiment, the first limiting assembly 114 includes limiting blocks 118 arranged at intervals on the second bracket 113, and a first limiting gap 116 is formed between the limiting blocks 118. The head end of the battery cell body is provided with a pole ear connected to the main body, and the limiting block 118 is L-shaped. The first limiting gap 116 formed by the limiting block 118 covers the pole ear and the connection between the main body and the pole ear. The limiting block 118 has a small volume and a larger coverage range, and can limit and guide the ends of the pole ear and the main body, and can prevent the relatively soft pole ear from being skewed. The second limiting assembly 115 includes limiting plates 119 arranged at intervals on the second bracket 113, and a second limiting gap 117 is formed between the limiting plates 119. Preferably, a sensor is provided on the limiting plate 119 to sense the position of the battery cell body, so as to determine whether the battery cell is lifted into place.

[0065] In an optional solution of this embodiment, the lifting mechanism includes a second screw assembly 120 and a second drive device, and the second screw assembly 120 and the second drive device are installed on the second bracket 113. The second drive device is specifically a servo motor, and the second drive device is connected to the screw of the second screw assembly 120 to drive the screw of the second screw assembly 120 to rotate. The length direction of the second screw assembly 120 is the vertical direction, and the clamping mechanism is connected to the nut of the second screw assembly 120 so that the clamping mechanism can reciprocate in the vertical direction to achieve the lifting function.

[0066] In an optional solution of this embodiment, the lifting mechanism further includes a second guide rail assembly 121, which is mounted on the second bracket 113, and the guiding direction of the second guide rail assembly 121 is the vertical direction. The clamping mechanism is connected to the slider of the second guide rail assembly 121. When the nut of the second screw assembly 120 drives the clamping mechanism to move, the second guide rail assembly 121 can guide the movement of the clamping mechanism to make the movement more stable and reliable.

[0067] Embodiment 3

[0068] Embodiment 3 of the present application provides a battery production system, including a battery cell loading device of any of the above embodiments, and thus has all the beneficial technical effects of the battery cell loading device of any of the above embodiments, which will not be repeated here.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In addition, a person skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present application and forming different embodiments.

Claims

1. A battery cell feeding device, characterized in that: It includes a lifting mechanism, a clamping mechanism and a limiting mechanism; The lifting mechanism is used to drive the clamping mechanism to rise and fall relative to the limiting mechanism; The clamping mechanism includes a first clamping assembly and a second clamping assembly, wherein the first clamping assembly is used to clamp the head end of the battery cell air bag, and the second clamping assembly is used to clamp the tail end of the battery cell air bag, and the first clamping assembly and the second clamping assembly can move relative to each other along the head-to-tail direction of the battery cell air bag so that the two are close to each other or away from each other; The limiting mechanism is correspondingly provided with a limiting gap to limit the battery cell body.

2. The battery cell feeding device according to claim 1, characterized in that: The clamping mechanism also includes a first bracket, a first screw assembly and a first driving device; The lifting mechanism is connected to the first bracket; the first screw assembly and the first driving device are installed on the first bracket, and the length direction of the first screw assembly is the head and tail direction of the battery core air bag; the first driving device is used to drive the screw of the first screw assembly to rotate; The first clamping assembly and / or the second clamping assembly is connected to the nut of the first screw assembly; when one of the first clamping assembly and the second clamping assembly is connected to the first screw assembly, the first clamping assembly or the second clamping assembly not connected to the first screw assembly is connected to the first bracket; When the first clamping assembly and the second clamping assembly are both connected to the first screw assembly, the screw of the first screw assembly is provided with two threaded sections with opposite rotation directions, and both threaded sections are sleeved with nuts to be respectively connected to the first clamping assembly and the second clamping assembly.

3. The battery cell feeding device according to claim 2, characterized in that: The clamping mechanism also includes a first guide rail assembly; The first guide rail assembly is installed on the first bracket, the guiding direction of the first guide rail assembly is the head and tail direction of the battery cell air bag, and the first clamping assembly and / or the second clamping assembly are connected to the slider of the first guide rail assembly.

4. The battery cell feeding device according to claim 2, characterized in that: The first clamping assembly includes a first integrated board and at least one first clamping claw module, the first integrated board is connected to the nut of the first screw assembly or the first bracket; the first clamping claw module is installed on the first integrated board, and when there are multiple first clamping claw modules, the multiple first clamping claw modules are correspondingly arranged along the arrangement direction of the battery cells; The second clamping assembly includes a second integrated board and at least one second clamping jaw module, and the second integrated board is connected to the nut of the first screw assembly or the first bracket; the second clamping jaw module is installed on the second integrated board, and when there are multiple second clamping jaw modules, the multiple second clamping jaw modules are correspondingly arranged along the arrangement direction of the battery cells.

5. The battery cell feeding device according to claim 4, characterized in that: The clamping jaw portion of the first clamping jaw module and / or the clamping jaw portion of the second clamping jaw module are bent so that the clamping jaw portion of the first clamping jaw module and the clamping jaw portion of the second clamping jaw module can fit together; The clamping surface of the first clamping jaw module is provided with a soft pad; the clamping surface of the second clamping jaw module is provided with a soft pad.

6. The battery cell feeding device according to claim 1, characterized in that: The limiting mechanism comprises a second bracket, a first limiting assembly and a second limiting assembly, wherein the first limiting assembly and the second limiting assembly are installed on the second bracket; The first limiting component is provided with a first limiting gap to limit the front end of the battery cell body; the second limiting component is provided with a second limiting gap to limit the rear end of the battery cell body.

7. The battery cell feeding device according to claim 6, characterized in that: The first limiting assembly includes limiting blocks spaced apart from each other on the second bracket, the first limiting gap is formed between the limiting blocks, a pole ear connected to the main body is provided at the head end of the battery cell body, and the first limiting gap covers the pole ear and the connection between the main body and the pole ear; The second limiting assembly includes limiting plates spaced apart from the second bracket, and the second limiting gap is formed between the limiting plates.

8. The battery cell feeding device according to claim 6, characterized in that: The lifting mechanism includes a second screw rod assembly and a second driving device; The second screw rod assembly and the second driving device are installed on the second bracket, and the length direction of the second screw rod assembly is the vertical direction; the second driving device is used to drive the screw of the second screw rod assembly to rotate; The clamping mechanism is connected to the nut of the second screw assembly.

9. The battery cell feeding device according to claim 8, characterized in that: The lifting mechanism also includes a second guide rail assembly; The second guide rail assembly is installed on the second bracket, and the guiding direction of the second guide rail assembly is the vertical direction; the clamping mechanism is connected to the slider of the second guide rail assembly.

10. A battery production system, characterized in that: It comprises a battery cell feeding device as claimed in any one of claims 1 to 9.

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