Pre-pressing assembly, winding equipment and production line

Abstract

The utility model discloses a pre-pressing assembly, winding equipment and a production line. The pre-pressing assembly is used for pressing a battery cell. The pre-pressing assembly comprises an abutting part, a base body and a first driving part. The base body is arranged on the lower side of the abutting part and suitable for being connected with the battery cell in the transverse direction. The first driving part is located on the lower side of the base body and connected with the abutting part. The first driving part is configured to be capable of driving the pressing part to move towards the base body in the vertical direction so as to press the battery cell together with the base body. According to the scheme, the battery cells can be stably connected, and the pre-pressing cost of the battery cells is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and in particular to a pre-pressed component, winding equipment and production line. Background Technology

[0002] The winding equipment includes a winding assembly and a pre-compression assembly. The winding assembly is used to wind the battery cells. After the cells are wound, the pre-compression assembly performs a pre-compression operation to achieve initial shaping of the cells and prevent them from unraveling. The pre-compression assembly can move laterally toward the winding assembly to connect the wound cells.

[0003] In related technologies, the pre-compression assembly includes a substrate, a drive unit, and a pressure unit. The substrate carries the battery cell and is located below the pressure unit, while the drive unit is located above the pressure unit. The drive unit drives the pressure unit to move vertically toward the substrate to achieve battery cell pre-compression. Specifically, the substrate needs to be laterally connected to the wound battery cell unloaded from the winding needle of the winding assembly. To ensure the accuracy of battery cell winding, various auxiliary mechanisms need to be set around the winding assembly. Some of these auxiliary mechanisms are arranged laterally opposite to the pre-compression assembly, meaning they are prone to interference with the drive unit on the upper side of the substrate, affecting the normal connection of the battery cell. This necessitates the winding assembly to perform multiple avoidance actions, increasing equipment costs. Utility Model Content

[0004] The main purpose of this utility model is to propose a pre-compression component, winding equipment and production line, which aims to solve the technical problem of abnormal cell connection.

[0005] To achieve the above objectives, a first aspect of this utility model provides a pre-compression assembly for pressing together battery cells, the pre-compression assembly comprising:

[0006] Pressing part;

[0007] A substrate is disposed on the lower side of the pressing portion, and the substrate is adapted to be laterally connected to the battery cell;

[0008] A first driving unit is located on the lower side of the substrate and connected to the pressing unit. The first driving unit is configured to drive the pressing unit to move vertically toward the substrate so as to press the battery cell together with the substrate.

[0009] In some embodiments, the substrate has a connection portion for connecting the battery cell, and the connection portion protrudes at least partially from the pressure portion along the transverse direction.

[0010] In some embodiments, the first driving part includes an active member and a driven member arranged opposite to each other in the transverse direction. The active member is movably connected to the driven member. In the transverse direction, the active member is located on the side of the driven member opposite to the connecting part. The driven member is connected to the pressing part to drive the pressing part to move in the vertical direction toward the base.

[0011] In some embodiments, the pre-compression assembly includes a mounting base and a first connector, one end of the first connector being connected to the pressing portion and the other end being connected to the driven member, the driven member being disposed through the mounting base;

[0012] The mounting base has a rotation axis extending along the vertical direction, and the driven member is rotatable about the rotation axis to drive the pressing part to move along the vertical direction toward the base.

[0013] In some embodiments, the pre-compression assembly includes a guide shaft and a guide sleeve, the guide sleeve being connected to the first connector, the guide shaft passing through the guide sleeve in the vertical direction, and both ends of the guide shaft being connected to the first connector and the pressing part, respectively.

[0014] In some embodiments, the substrate has a connection portion for connecting the battery cell, and the preload assembly includes a first slider and a first slide rail. The first slider is connected to the substrate and is configured to move laterally along the first slide rail to connect the connection portion to the battery cell.

[0015] In some embodiments, the preload assembly includes a second drive unit connected to the first slider to drive the first slider to move along the transverse direction on the first slide rail, wherein the second drive unit and the first drive unit are arranged opposite to each other along the transverse direction.

[0016] In some embodiments, the substrate includes a connecting portion and a pressure-bearing portion arranged opposite to each other in the transverse direction. The connecting portion is used to connect the battery cell, and the pressure-bearing portion is used together with the pressure-bearing portion to press the battery cell together.

[0017] The pre-pressure assembly includes a third drive unit adapted to drive the battery cell to move laterally from the connector to the pressure-bearing part.

[0018] A second aspect of this utility model provides a winding device, comprising:

[0019] The pre-compression component as described in the above embodiments; and

[0020] A winding assembly for winding the battery cell.

[0021] A third aspect of this utility model provides a production line for processing battery cells, the production line comprising:

[0022] The winding equipment as described in the above embodiments; and

[0023] A conveyor line for conveying the battery cells.

[0024] Compared with the prior art, the beneficial effects of this utility model include:

[0025] In the technical solution of this utility model, the pre-pressing assembly includes a pressing part, a base, and a first driving part. The base is suitable for connecting the battery cell laterally. In the prior art, the base is located below the pressing part, and the driving part is located above the pressing part. The driving part can drive the pressing part to move vertically toward the base to achieve pre-pressing of the battery cell. However, to ensure the accuracy of battery cell winding, various auxiliary mechanisms need to be set around the winding assembly. Some of these auxiliary mechanisms are arranged laterally opposite to the pre-pressing assembly, meaning that the auxiliary mechanisms are prone to interference with the driving part on the upper side of the base, which will affect the normal connection of the battery cell. This necessitates the winding assembly to add various avoidance actions, increasing equipment costs. In this solution, the base is located below the pressing part, and the first driving part is located below the base and connected to the pressing part. The first driving part is configured to drive the pressing part to move vertically toward the base to press the battery cell together with the base. Therefore, this solution can effectively reduce the interference between the auxiliary mechanism and the first drive unit, so that the battery cells can be connected normally. In other words, the winding assembly can omit a number of avoidance actions, thereby effectively reducing the overall manufacturing cost of the winding equipment. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the pre-compression component in one direction according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the pre-compression component in one embodiment of the present invention along another direction;

[0029] Figure 3 This is a side view of the pre-compression component in one embodiment of the present invention.

[0030] Explanation of icon numbers:

[0031] Pre-compression component 10;

[0032] Pressure section 100;

[0033] 200; 210; 220;

[0034] First drive unit 300; driving component 310; driven component 320;

[0035] Mounting base 400; Rotation axis 410;

[0036] First connector 500;

[0037] Guide shaft 610; guide sleeve 620;

[0038] First slider 710; First slide rail 720;

[0039] Second drive unit 810; Third drive unit 820;

[0040] Pressure sensor 900;

[0041] 20 cells;

[0042] Horizontal (X); Vertical (Y).

[0043] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] In view of this, the first aspect of this utility model provides a pre-pressurization component 10, which is used to press the battery cell 20, thereby effectively reducing interference between the auxiliary mechanism and the pre-pressurization component 10. Referring below... Figures 1 to 3 The pre-compression component 10 of this application embodiment will be introduced. Specifically, the pre-compression component 10 includes a pressing part 100, a base 200, and a first driving part 300.

[0046] Reference Figure 1 The pressing part 100 can be pressed together with the substrate 200 to bond the battery cell 20. It can be understood that the pressing part 100 can be a pressure plate. The pressing surface of the pressing part 100 used to press the battery cell 20 can be a plane. The area of ​​the pressing surface can be larger than the flat area of ​​the battery cell 20.

[0047] Reference Figures 1 to 3The substrate 200 can support the battery cell 20, and the substrate 200 can be disposed below the pressing portion 100. In some embodiments, the substrate 200 can be disposed directly below the pressing portion 100 along the vertical Y direction. In other embodiments, the substrate 200 can also be disposed obliquely below the pressing portion 100. It should be noted that the "lower side" mentioned in the embodiments of this application is based on the pre-compression assembly 10 in the working state. The substrate 200 can connect to the battery cell 20 along the transverse X direction, referring to... Figure 3 The orientation, specifically the horizontal (X) direction, can point to the left or right. In some embodiments, the battery cell 20 can be connected by driving the base 200 to move along the horizontal (X) direction. In other embodiments, the battery cell 20 can be connected to the base 200 by driving the base 200 to move along the horizontal (X) direction using an adapter component. This application embodiment will be described using the example of connecting the battery cell 20 by driving the base 200 to move along the horizontal (X) direction.

[0048] Reference Figures 1 to 3 The first driving unit 300 is used to drive the pressing part 100 to move. Specifically, the first driving unit 300 may be disposed on the lower side of the base 200. In some embodiments, the first driving unit 300 may be disposed directly below the base 200 along the vertical Y direction. In other embodiments, the first driving unit 300 may also be disposed on the obliquely lower side of the base 200. The first driving unit 300 may be connected to the pressing part 100 and can drive the pressing part 100 to move along the vertical Y direction toward the base 200 so as to press the battery cell 20 together with the base 200. It should be noted that in some embodiments, the first driving unit 300 may use a motor to drive the pressing part 100 to move along the vertical Y direction. In other embodiments, the first driving unit 300 may also use pneumatic or hydraulic pressure to drive the pressing part 100 to move along the vertical Y direction.

[0049] In the technical solution of this utility model, the pre-compression assembly 10 includes a pressing part 100, a base 200, and a first driving part 300. The base 200 is suitable for connecting the battery cell 20 in the transverse direction X. In the prior art, the base is located below the pressing part, and the driving part is located above the pressing part. The driving part can drive the pressing part to move vertically toward the base to achieve battery cell pre-compression. However, to ensure the accuracy of battery cell winding, various auxiliary mechanisms need to be set around the winding assembly. Some of these auxiliary mechanisms are arranged laterally opposite to the pre-compression assembly, meaning that the auxiliary mechanisms are prone to interference with the driving part on the upper side of the base, which will affect the normal connection of the battery cell. This necessitates the winding assembly to add various avoidance actions, increasing equipment costs. In this solution, the base 200 is located below the pressing part 100, and the first driving part 300 is located below the base 200 and connected to the pressing part 100. The first drive unit 300 is configured to drive the pressing unit 100 to move vertically Y-oriented toward the substrate 200, so as to press the battery cell 20 together with the substrate 200. Therefore, this solution can effectively reduce the interference between the auxiliary mechanism and the first drive unit 300, so that the battery cell 20 can be properly connected. That is, the winding assembly can omit a number of avoidance actions, thereby effectively reducing the overall manufacturing cost of the winding equipment.

[0050] Reference Figures 1 to 3 The following describes the relative arrangement of the pressing part 100 and the base 200. In some embodiments, the base 200 includes a connecting part 210 for connecting the battery cell 20. (Refer to...) Figure 2 Orientation: The connector 210 is located on the left side of the base 200. It is understood that the winding assembly can also be located on the left side of the base 200, that is, the connector 210 can be located on the side of the base 200 facing the winding assembly. Specifically, along the transverse direction X, the connector 210 can at least partially protrude from the pressing portion 100, as shown in the figure. Figure 3 The orientation, that is, the connecting part 210 can be arranged to protrude from the pressing part 100 from right to left, and the specific protrusion length of the connecting part 210 can be determined according to the actual situation.

[0051] In this design, the connecting part 210 is convexly provided on the pressing part 100 along the transverse X direction, which can effectively prevent the pressing part 100 from interfering with the normal connection of the battery cell 20, so that the battery cell 20 can accurately stop at the connecting part 210, reducing the probability of the battery cell 20 shifting or misaligning during the connection process, and ensuring the reliability of the connection of the battery cell 20.

[0052] Reference Figures 1 to 3 The specific configuration of the first drive unit 300 is described below. In some embodiments, the first drive unit 300 includes a driving member 310 and a driven member 320 arranged opposite to each other along the transverse X. The driving member 310 is movably connected to the driven member 320, meaning the driving member 310 can drive the driven member 320 to move. Along the transverse X, the driving member 310 is located on the side of the driven member 320 opposite to the connecting portion 210, as shown in the figure. Figure 3 In terms of orientation, the driving member 310 can be located to the right of the driven member 320. It should be noted that the driven member 320 can be connected to the pressing part 100, that is, it can drive the pressing part 100 to move vertically Y towards the base 200.

[0053] In this design, both the active component 310 and the driven component 320 are located on the lower side of the base 200. This not only avoids interference between the first drive unit 300 and the upper auxiliary mechanism, but also makes the overall structure of the pre-compression assembly 10 more compact, thereby simplifying the equipment structure, reducing the space occupied, and lowering the equipment cost.

[0054] It should be noted that in some embodiments, the driving element 310 can be a drive element such as a motor, cylinder, or hydraulic cylinder. The driven element 320 can be a component such as a gear, lead screw, or screw rod. This application embodiment uses a motor as the driving element 310 and a lead screw as the driven element 320 as an example for illustration.

[0055] Reference Figures 1 to 3 The following describes the specific driving configuration of the driving member 310 to the driven member 320. In some embodiments, the pre-compression assembly 10 includes a mounting base 400 and a first connecting member 500. One end of the first connecting member 500 can be connected to the pressing part 100, and the other end can be connected to the driven member 320, that is, the driven member 320 can drive the pressing part 100 to move. The driven member 320 can be arranged through the mounting base 400. Specifically, refer to... Figure 3 The mounting base 400 has a rotation axis 410, which can extend vertically along the Y direction. The driven member 320 can rotate around the rotation axis 410, thereby driving the pressing part 100 to move vertically along the Y direction towards the base 200. This solution, through the cooperation of the mounting base 400 and the first connecting member 500, can make the movement of the pressing part 100 more stable, thereby reducing the shaking and errors generated during the movement and ensuring the stability of the pre-pressed component 10 pressing the battery cell 20.

[0056] In some embodiments, the pre-compression assembly 10 further includes a second connector, one end of which can be connected to the first connector 500 and the other end of which can be connected to the pressing part 100. The specific drive configuration of the pressing part 100 can be determined according to the actual situation. In this solution, the second connector can effectively increase the arrangement height of the pressing part 100, so that the pressing part 100 has sufficient movement stroke, that is, it can adapt to the pressing operation of battery cells 20 of various specifications and sizes.

[0057] Reference Figures 1 to 3In some embodiments, the pre-pressing assembly 10 includes a guide shaft 610 and a guide sleeve 620. The guide sleeve 620 is connected to the first connecting member 500. The guide shaft 610 can pass through the guide sleeve 620 in a vertical Y direction, and both ends of the guide shaft 610 are respectively connected to the first connecting member 500 and the pressing part 100. It can be understood that there can be a single guide shaft 610 or multiple guide shafts. This embodiment of the application is described using multiple guide shafts 610 as an example. The number of guide sleeves 620 can be adapted to the arrangement of the guide shafts 610. The guide shaft 610 of this solution can cooperate with the guide sleeve 620, which can enhance the accuracy of the movement of the pressing part 100, reduce errors in the movement process, and improve the reliability and stability of pressing. It should be noted that a sealing structure can be provided between the guide shaft 610 and the guide sleeve 620, which can prevent dust or impurities from entering and ensure movement accuracy.

[0058] Reference Figures 1 to 3 The specific connection configuration of the substrate 200 is described below. In some embodiments, the substrate 200 has a connection portion 210 for connecting the battery cell 20. The pre-pressure assembly 10 includes a first slider 710 and a first slide rail 720, the first slider 710 being adaptable to the arrangement of the first slide rail 720. The first slider 710 can connect to the substrate 200. The first slider 710 is capable of moving along the transverse direction X on the slide rail, so that the connection portion 210 can connect to the battery cell 20. It should be noted that in other embodiments, the pre-pressure assembly 10 also has a second slider and a second slide rail. The structure of the second slider can be the same as that of the first slider 710, and the structure of the second slide rail can be the same as that of the first slide rail 720. The second slide rail can be arranged at a distance from the first slide rail 720. The slider and slide rail of this design cooperate to allow the connector 210 to move laterally X to accommodate battery cells 20 of different sizes and shapes, making it easy for the connector 210 to flexibly adjust its position and ensuring that the battery cell 20 can be accurately docked on the connector 210.

[0059] Reference Figure 1 and Figure 3 The driving configuration of the base 200 is described below. In some embodiments, the pre-pressure component 10 includes a second driving unit 810. The specific configuration of the second driving unit 810 may be the same as or different from that of the first driving unit 300. In this embodiment, both the first driving unit 300 and the second driving unit 810 are servo motors, as an example. The second driving unit 810 can be connected to the first slider 710 to drive the first slider 710 to move along the transverse direction X on the first slide rail 720.

[0060] The second drive unit 810 may be arranged opposite to the first drive unit 300 along the transverse X direction. In some embodiments, along the transverse X direction, the second drive unit 810 may be provided on the side of the first drive unit 300 facing away from the connecting portion 210. In other embodiments, along the transverse X direction, the second drive unit 810 may be provided on the side of the first drive unit 300 facing the connecting portion 210. This application embodiment is described using the example of the second drive unit 810 being provided on the side of the first drive unit 300 facing the connecting portion 210.

[0061] The second drive unit 810 of this solution can drive the first slider 710 to move along the transverse X, so that the connecting part 210 can automatically adjust its position as needed. The second drive unit 810 and the first drive unit 300 are arranged opposite each other along the transverse X, that is, the entire drive system can be compactly arranged on the lower side of the base 200 to prevent interference with other auxiliary mechanisms.

[0062] Reference Figures 1 to 3 The specific structure of the substrate 200 is described below. In some embodiments, the substrate 200 includes a connecting portion 210 and a pressure-bearing portion 220, which are arranged opposite to each other along the transverse direction X. The connecting portion 210 is used to connect the battery cell 20, and the pressure-bearing portion 220, together with the pressing portion 100, is used to press the battery cell 20 together. (Refer to...) Figure 1 In terms of orientation, the connecting part 210 can be located on the left side of the base 200, and the pressure-bearing part 220 can be located on the right side of the base 200.

[0063] The pre-compression assembly 10 includes a third drive unit 820, which drives the battery cell 20 to move laterally X from the connector 210 to the pressure bearing unit 220. In some embodiments, the third drive unit 820 can be a belt, meaning the battery cell 20 can be transported from the connector 210 to the pressure bearing unit 220 via the belt. In other embodiments, the third drive unit 820 can be a drive element such as a motor or cylinder to meet different drive requirements. In other embodiments, a sensor can be provided between the third drive unit 820 and the battery cell 20 to monitor the position of the battery cell 20 in real time and ensure movement accuracy.

[0064] Reference Figure 3 In some embodiments, the pre-pressure assembly 10 includes a pressure sensor 900 connected to the pressure-retaining part 100 to detect the pressure applied by the pressure-retaining part 100 to the battery cell 20, thereby preventing excessive pressure from the pressure-retaining part 100 from damaging the battery cell 20 and ensuring the processing quality of the battery cell 20.

[0065] A second aspect of this invention provides a winding device, comprising a pre-pressing assembly 10 and a winding assembly as described in the previous embodiment. The winding assembly is used to wind a battery cell 20. In this design, a base 200 is disposed below a pressing portion 100, and a first driving portion 300 is located below the base 200 and connected to the pressing portion 100. The first driving portion 300 is configured to drive the pressing portion 100 to move vertically Y-oriented toward the base 200, so as to press the battery cell 20 together with the base 200. Therefore, this design can effectively reduce interference between the auxiliary mechanism and the first driving portion 300, allowing the battery cell 20 to be properly connected. This means the winding assembly can omit various avoidance actions, thereby effectively reducing the overall manufacturing cost of the winding device.

[0066] The operation process of a winding device according to a specific embodiment of this application is described below. When the winding assembly completes winding the battery cell 20, the second drive unit 810 can drive the base 200 to move laterally (X) so that the connecting part 210 of the base 200 connects to the battery cell 20. The third drive unit 820 can drive the battery cell 20 from the connecting part 210 to the pressure bearing part 220. Then, the first drive unit 300 can drive the pressing part 100 to move vertically (Y) toward the base 200 to press the battery cell 20 together with the base 200 to achieve pre-pressing. It should be noted that during the pre-pressing process, the guide sleeve 620 can provide guidance and bear radial loads. After pre-pressing is completed, the battery cell 20 can be transported to the next process by a belt driven by a motor.

[0067] A third aspect of this utility model provides a production line for processing battery cells 20. The production line includes the winding equipment described above and a conveyor line. The conveyor line is used to transport the battery cells 20. This solution can ensure the processing efficiency of the battery cells 20 and reduce processing costs.

[0068] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0069] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0070] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A pre-press assembly (10) for pressing a cell (20), characterized in that, The pre-pressing assembly (10) comprises: a pressing part (100); a base body (200) arranged at the lower side of the pressing part (100), the base body (200) being adapted to connect the battery cell (20) in the transverse direction; a first driving part (300) arranged at the lower side of the base body (200) and connected to the pressing part (100), the first driving part (300) being configured to drive the pressing part (100) to move in the vertical direction towards the base body (200) so as to press the battery cell (20) together with the base body (200).

2. The pre-pressing assembly (10) according to claim 1, wherein the base body (200) has a connecting part (210) for connecting the battery cell (20), the connecting part (210) being arranged at least partially protruding from the pressing part (100) in the transverse direction.

3. The pre-pressing assembly (10) according to claim 2, wherein the first driving part (300) comprises a driving member (310) and a driven member (320) arranged oppositely in the transverse direction, the driving member (310) being movably connected to the driven member (320), the driving member (310) being arranged at the side of the driven member (320) away from the connecting part (210) in the transverse direction, and the driven member (320) being connected to the pressing part (100) to drive the pressing part (100) to move in the vertical direction towards the base body (200).

4. The pre-pressing assembly (10) according to claim 3, wherein the pre-pressing assembly (10) comprises a mounting seat (400) and a first connecting member (500), one end of the first connecting member (500) being connected to the pressing part (100) and the other end being connected to the driven member (320), and the driven member (320) being arranged through the mounting seat (400); the mounting seat (400) has a rotating axis (410) extending in the vertical direction, and the driven member (320) is capable of rotating around the rotating axis (410) to drive the pressing part (100) to move in the vertical direction towards the base body (200).

5. The pre-pressing assembly (10) according to claim 4, wherein the pre-pressing assembly (10) comprises a guide shaft (610) and a guide sleeve (620), the guide sleeve (620) being connected to the first connecting member (500), the guide shaft (610) being arranged through the guide sleeve (620) in the vertical direction, and two ends of the guide shaft (610) being respectively connected to the first connecting member (500) and the pressing part (100).

6. The pre-pressing assembly (10) according to claim 1, wherein The base body (200) has a connecting portion (210) for connecting the battery cell (20), the pre-pressing assembly (10) comprises a first sliding block (710) and a first sliding rail (720), the first sliding block (710) is connected to the base body (200), and the first sliding block (710) is configured to be capable of moving along the transverse direction of the first sliding rail (720) so as to connect the connecting portion (210) to the battery cell (20).

7. The pre-pressing assembly (10) according to claim 6, characterized in that, The pre-pressing assembly (10) comprises a second driving portion (810), the second driving portion (810) is connected to the first sliding block (710) to drive the first sliding block (710) to move along the transverse direction of the first sliding rail (720), and the second driving portion (810) is arranged opposite to the first driving portion (300) along the transverse direction.

8. The pre-pressing assembly (10) according to claim 1, characterized in that, The base body (200) comprises a connecting portion (210) and a pressing portion (220) arranged opposite along the transverse direction, the connecting portion (210) is used for connecting the battery cell (20), and the pressing portion (220) is used for pressing the battery cell (20) together with the pressing portion (100); The pre-pressing assembly (10) comprises a third driving portion (820), the third driving portion (820) is adapted to drive the battery cell (20) to move from the connecting portion (210) to the pressing portion (220) along the transverse direction.

9. Winding apparatus, characterized in that Comprise: The pre-pressing assembly (10) according to any one of claims 1-8; And A winding assembly for winding the battery cell (20).

10. Production line for processing an electric cell (20), characterized in that, The production line comprises: The winding device according to claim 9; and A conveying line for conveying the battery cell (20). The production line comprises: The winding device according to claim 9; and A conveying line for conveying the battery cell (20). The production line comprises: The winding device according to claim 9; and A conveying line for conveying the battery cell (20).

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