Tab bending device

Abstract

The utility model relates to the technical field of pole lug bending, and discloses a pole lug bending device which comprises a bending mechanism used for bending a pole lug. The fixing mechanism is arranged below the bending mechanism and is used for fixing the battery cell; and the rotating mechanism is connected with the bending mechanism, is arranged corresponding to the upper part of the fixing mechanism and is used for rotating the battery cell, so that the tab corresponds to the bending mechanism. According to the utility model, through the design of the bending mechanism and the fixing mechanism, the fixing mechanism is used for fixing the battery cell, the rotating mechanism is used for rotating the tab to a proper position, and the bending mechanism is used for bending the tab, so that the tab is parallel to the battery cell, the battery cell is convenient to feed, and the quality of the tab can be effectively ensured; and the automation degree of tab bending operation is improved, and the tab bending efficiency is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of electrode bending technology, specifically relating to an electrode bending device. Background Technology

[0002] Tab bending involves bending the excess portion of the battery tabs to facilitate subsequent processing and transportation, and also to better accommodate the space inside the battery casing, avoiding short circuits and other safety issues.

[0003] In existing technologies, the tabs are perpendicular to the battery cell immediately after winding, which is not conducive to subsequent processing and transportation, and the tabs are easily damaged during processing. Some manufacturers manually bend the tabs directly during production to avoid the tabs being perpendicular to the battery cell, but this method is too labor-intensive and time-consuming. Others use a tab-pressing device to bend the tabs. While this method greatly saves labor, because the tabs are perpendicular to the battery cell, damage to the tabs often occurs during the pressing process, making it difficult to ensure the quality of the tabs. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a tab bending device. A fixing mechanism secures the battery cell, a rotating mechanism rotates the tab to a suitable position, and a bending mechanism bends the tab to make it parallel to the battery cell. This battery cell shape not only facilitates feeding but also minimizes the risk of damage to the tab during subsequent processing, effectively ensuring the quality of the tab. Furthermore, the tab bending operation is highly automated, reducing manual intervention, saving time, and effectively improving the tab bending efficiency.

[0005] The technical effects to be achieved by this utility model are realized through the following aspects:

[0006] This utility model provides a tab bending device, including a bending mechanism, comprising a pressure head, a horizontal moving component, and a vertical moving component. The horizontal moving component is used to drive the pressure head to horizontally bend the tab on the battery cell; the vertical moving component is used to drive the pressure head to vertically flatten the horizontally bent tab on the battery cell.

[0007] A fixing mechanism, disposed below the bending mechanism, is used to fix the battery cell; and

[0008] A rotating mechanism, connected to the bending mechanism and positioned above the fixing mechanism, is used to rotate the battery cell so that the electrode tabs align with the bending mechanism.

[0009] In some implementations, the pressure head includes an adjacent pressure surface and a bending surface; the bending surface is used to horizontally bend the tabs on the battery cell; the pressure surface is used to vertically flatten the horizontally bent tabs on the battery cell.

[0010] In some implementations, the horizontal moving component includes:

[0011] The first cylinder, the pushing end of the first cylinder is connected to the vertical moving component;

[0012] A first mounting plate is fixedly connected to the first cylinder; and

[0013] The slider is connected to the lower end of the first mounting plate and is movably connected to the vertical moving component.

[0014] In some implementations, the vertical moving component includes:

[0015] A second mounting plate is connected to the drive end of the horizontally moving component; and

[0016] The lifting assembly is connected between the second mounting plate and the pressure head.

[0017] In some implementations, the lifting assembly includes a first slide cylinder, a connecting plate, and a second slide cylinder. The first slide cylinder is connected to the second mounting plate. One end of the connecting plate is connected to the drive end of the first slide cylinder, and the other end of the connecting plate is connected to the second slide cylinder. The drive end of the second slide cylinder is connected to the pressure head.

[0018] In some implementations, the fixing mechanism includes a first limiting component and a second limiting component disposed opposite to each other, both of which are movable to cooperate for placing the battery cell.

[0019] In some implementations, the first limiting component includes a second cylinder and a push rod, with the second cylinder being drivenly connected to the push rod.

[0020] In some implementations, the second limiting component includes a third cylinder and a pressure block, the third cylinder being drivenly connected to the pressure block; the pressure block is disposed opposite to the top rod to cooperate in placing the battery cell.

[0021] In some implementations, the rotating mechanism includes a third slide cylinder, a motor, and rollers. The third slide cylinder is driven by the motor to move the motor, and the motor is driven by the rollers to rotate the rollers. The rollers are arranged corresponding to the fixing mechanism.

[0022] In some implementations, the rotating mechanism also includes a sensor for sensing the position of the tabs.

[0023] In summary, this utility model has at least the following advantages:

[0024] 1. The electrode tab bending device provided by this utility model uses a fixing mechanism to fix the battery cell, and a rotating mechanism to rotate the battery cell to a suitable position, that is, to rotate the electrode tab to a suitable position where the bending mechanism can bend it. Then, the bending mechanism performs a bending operation on the electrode tab, bending it to be parallel to the battery cell. The shape of the battery cell after the electrode tab is bent not only facilitates feeding, but also makes it less likely to be damaged during subsequent processing, effectively ensuring the quality of the electrode tab; moreover, the electrode tab bending operation has a high degree of automation, reducing manual intervention, saving time, and effectively improving the electrode tab bending efficiency.

[0025] 2. The electrode bending device provided by this utility model has a compact structure, small overall size, small space occupation, and strong operation cycle. Attached Figure Description

[0026] Figure 1 This is a schematic diagram showing the state of the electrode lug before and after bending in this utility model.

[0027] Figure 2 This is a schematic diagram of the tab bending device in Example 1.

[0028] Figure 3 The diagram shows the main view of the electrode bending device in Example 1 before the electrode is bent (excluding the rotating mechanism).

[0029] Figure 4 The diagram shows the main view of the electrode bending device in Example 1 after the electrode tabs are bent (excluding the rotating mechanism).

[0030] Figure 5 This is a schematic diagram of the bending mechanism in Example 1.

[0031] Figure 6 This is a schematic diagram of the pressure head in Example 2.

[0032] Figure 7 This is a schematic diagram of the bending mechanism shown in Example 2.

[0033] Figure 8 This is a schematic diagram of the fixing mechanism in Example 2.

[0034] Figure 9 This is a schematic diagram of the rotating mechanism in Example 2.

[0035] Figure 10 This is a schematic diagram of the lifting assembly shown in Example 3.

[0036] Marked in the image:

[0037] 1. Bending mechanism; 11. Horizontal moving component; 111. First mounting plate; 112. First cylinder; 113. Slider; 12. Vertical moving component; 121. Second mounting plate; 122. Slide rail; 123. Lifting assembly; 1231. First slide cylinder; 1232. Connecting plate; 1233. Second slide cylinder; 13. Press head; 131. Pressing plane; 132. Bending surface; 2. Fixing mechanism; 21. First limiting component; 211. Second cylinder; 212. Top rod; 22. Second limiting component; 221. Pressing block; 222. Third cylinder; 3. Rotating mechanism; 31. Third slide cylinder; 32. Motor; 33. Roller; 34. Sensor; 35. Third mounting plate; 4. Battery cell; 5. Electrode. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] Example 1:

[0041] Please see the appendix Figure 1 -Appendix Figure 5 ,in Figure 1 Figure 1A shows the state of the battery cell before the tabs are bent, and Figure 1B shows the state of the battery cell after the tabs are bent. The tab bending device of this invention includes a bending mechanism 1, a fixing mechanism 2, and a rotating mechanism 3. The bending mechanism 1 includes a pressure head 13, a horizontal moving component 11, and a vertical moving component 12. The horizontal moving component 11 drives the pressure head 13 to horizontally bend the tabs 5 on the battery cell 4; the vertical moving component 12 drives the pressure head 13 to vertically flatten the horizontally bent tabs 5 on the battery cell 4; the fixing mechanism 2 is located below the bending mechanism 1 and is used to fix the battery cell 4; the rotating mechanism 3 is connected to the bending mechanism 1 and is located above the fixing mechanism 2, used to rotate the battery cell 4 so that the tabs 5 correspond to the bending mechanism 1.

[0042] The vertical moving component 12 is connected between the horizontal moving component 11 and the pressure head 13. The connection is compact, resulting in a fast process cycle.

[0043] In addition, bearings are provided at both ends of the fixing mechanism 2 that are in contact with the battery cell 4. By providing bearings, the fixing mechanism 2 will not affect the rotation of the battery cell 4 when the rotating mechanism 3 drives the battery cell 4 to rotate, thereby ensuring that the battery cell 4 rotates in a limited position, so that the tab 5 rotates to the corresponding position and ensures the accuracy of the tab 5 bending.

[0044] In this embodiment, the tab bending device uses a fixing mechanism 2 to limit and fix the battery cell 4. Then, a rotating mechanism 3 drives the battery cell 4 to rotate, causing the tab 5 to rotate to a suitable bending position. Next, the horizontal moving component 11 of the bending mechanism 1 moves the pressure head 13 in the X direction to one side of the tab 5. Then, the vertical moving component 12 lowers the pressure head 13 in the Z direction to a suitable position. Subsequently, the horizontal moving component moves the pressure head in the Y direction, causing the pressure head 13 to bend the tab 5. Finally, the vertical moving component 12 moves the pressure head 13 in the Z direction, flattening the tab 5 so that it is parallel to the battery cell 4. After completing the tab 5 bending process, the vertical moving component 12 and the horizontal moving component 11 drive the pressure head 13 back to its initial state. Finally, the fixing mechanism 2 releases the battery cell 4, allowing the bent battery cell 4 to enter the next workstation. Other mechanisms return to their initial positions, and the operation is repeated, continuously bending the tab 5 until it is parallel to the battery cell 4. This method not only facilitates cell feeding after the tabs are bent, but also prevents damage to the tabs during subsequent processing, effectively ensuring tab quality. It also reduces the difficulty of subsequent processing and inspection, improving efficiency. Furthermore, it effectively increases the automation level of the tab bending operation, reducing manual intervention, saving time, and improving the efficiency of tab bending.

[0045] Understandably, the bending mechanism 1 divides the bending of the tab 5 into two actions: first, the bending face of the pressure head 13 bends the tab in the Y direction; second, the pressure plane 131 of the pressure head 13 presses the tab downward in the Z direction. This structure ensures that the bending process of the tab 5 is gradual, effectively avoiding damage to the tab 5 caused by direct bending and pressing, ensuring a high-quality bending effect of the tab 5, effectively improving the consistency of the bent tab 5, and guaranteeing the bending quality of the tab 5.

[0046] Furthermore, the bending mechanism 1 has a compact structure and short stroke of each component, resulting in a strong cycle time and thus improving the bending efficiency of the tab 5.

[0047] In addition, this device integrates multiple functions such as rotating and fixing the battery cell and bending the electrode tabs into one unit, achieving a compact structural design and small overall size. Therefore, the device occupies less space, the operation process is relatively simplified, and the operation cycle is fast.

[0048] Example 2:

[0049] The difference between this embodiment and Embodiment 1 is that this embodiment further elaborates on the structure of the bending mechanism 1, the fixing mechanism 2, and the rotating mechanism 3.

[0050] Please see Figure 6 The pressure head 13 includes an adjacent pressure surface 131 and a bending surface 132; the bending surface 132 is used to horizontally bend the tabs 5 on the battery cell 4; the pressure surface 131 is used to vertically flatten the tabs 5 on the battery cell 4 after they have been horizontally bent.

[0051] Specifically, the bending surface 132 is used to switch the tab 5 from a state perpendicular to the cell 4 to a state not perpendicular to the cell 4, so that the tab 5 tilts and bends, effectively ensuring the smoothness of the bending process and avoiding the problem of wrinkles and adhesion during the bending of the tab 5. The pressing surface 131 is used to flatten the tab 5, so that the tab 5 is parallel to the cell 4.

[0052] Additionally, please see the appendix. Figure 6 An obtuse angle α is formed between the bending surface 132 and the pressing surface 131. Preferably, the obtuse angle α is any value between 100° and 110°.

[0053] By setting an obtuse angle α between the bending surface 132 and the pressing surface 131, the bending surface 132 first contacts the end of the tab 5 furthest from the battery cell 4 and applies a horizontal force to it. This ensures that the initial bending action of the tab 5 is a rotational motion from the end closest to the battery cell 4 until the tab 5 is fully in contact with the bending surface 132. The bending surface 132 then applies force to the entire contact surface of the tab 5, ensuring balanced force on the tab 5 and preventing wrinkles or overlaps, thus guaranteeing high-quality bending. Furthermore, the pressing surface 131 presses down on the tab 5 until it is in contact with the fixing mechanism 2, effectively achieving a parallel state between the tab 5 and the battery cell 4, thereby ensuring high consistency in the bending of the tab 5.

[0054] In some other embodiments, the pressure head 13 may also be a cylindrical pressure head, which flattens the tab 5 by rolling.

[0055] In some embodiments, please refer to the appendix. Figure 7The horizontal moving component 11 includes a first cylinder 112, a first mounting plate 111, and a slider 113. The first mounting plate 111 is fixedly connected to the first cylinder 112. The pushing end of the first cylinder 112 is connected to the vertical moving component 12. The slider 113 is connected to the lower end of the first mounting plate 111 and is movably connected to the vertical moving component 12. In this manner, the operation of the horizontal moving component 11 is as follows: activating the first cylinder 112 pushes the vertical moving component 12 to move in the X or Y direction via the slider 113, thereby achieving the horizontal movement of the pressure head 13. The operation process is compact, with strong cycle time, and the action structure is simple, making manufacturing easy and facilitating later maintenance.

[0056] The vertical moving component 12 includes a second mounting plate 121 and a lifting assembly 123. The second mounting plate 121 is connected to the drive end of the horizontal moving component 11, and the lifting assembly 123 is connected between the second mounting plate 121 and the pressure head 13. In this manner, the operation of the vertical moving component 12 is as follows: The lifting assembly 123 is activated, which in turn drives the pressure head 13 to perform a lifting action, thereby pressing the tab 5 downwards and ensuring that the tab 5 is parallel to the cell 4. This design is simple, and the operation is highly responsive. It is beneficial for manufacturing and also facilitates later maintenance.

[0057] In addition, the vertical moving component 12 is provided with a slide rail 122 that is adapted to the slider 113. Through the movable connection between the slide rail 122 and the slider 113, the second mounting plate 121 can be easily moved after being pushed by the first cylinder 112, reducing the friction between the second mounting plate 121 and the slider 113 and improving the flexibility of horizontal movement.

[0058] In some embodiments, please refer to the appendix. Figure 8 The fixing mechanism 2 includes a first limiting component 21 and a second limiting component 22 arranged opposite to each other. Both the first limiting component 21 and the second limiting component 22 are movable to accommodate the placement of the battery cell 4. This arrangement secures both ends of the battery cell 4, and both components can move flexibly according to the length of the battery cell 4. This ensures the stability of the battery cell 4 while preventing it from colliding with either the first limiting component 21 or the second limiting component 22 during circulation, effectively protecting the battery cell 4 and ensuring smooth circulation.

[0059] Specifically, the first limiting component 21 includes a second cylinder 211 and a push rod 212, with the second cylinder 211 and the push rod 212 being drivenly connected.

[0060] The second limiting component 22 includes a third cylinder 222 and a pressure block 221. The third cylinder 222 is drivenly connected to the pressure block 221. The pressure block 221 is arranged opposite to the push rod 212 to cooperate in placing the battery cell.

[0061] With the aforementioned structure of the first limiting component 21 and the second limiting component 22, the operation process is as follows: the battery cell 4 is placed between the pressure block 221 and the push rod 212, and the second cylinder 211 and the third cylinder 222 are activated. The second cylinder 211 pushes the push rod 212 towards one end of the battery cell 4, and the third cylinder 222 pushes the pressure block 221 towards the other end of the battery cell 4, until both the pressure block 221 and the push rod 212 contact both ends of the battery cell 4, thereby limiting and positioning the battery cell 4. This ensures the stable placement of the battery cell 4 and facilitates the accuracy of subsequent bending of the tab 5. Furthermore, this structure is applicable to battery cells 4 of various lengths.

[0062] In some embodiments, please refer to the appendix. Figure 9 The rotating mechanism 3 includes a third slide cylinder 31, a motor 32, and a roller 33. The third slide cylinder 31 is driven to the motor 32 to move the motor 32. The motor 32 is driven to the roller 33 to rotate the roller 33. The roller 33 is set in relation to the fixing mechanism 2.

[0063] In this manner, the rotation process of the battery cell 4 is as follows: The third slide cylinder 31 is activated, driving the roller 33 to press down until it contacts the battery cell 4. Then, the motor 32 is activated, driving the roller 33 to rotate, which in turn drives the battery cell 4 to rotate at a certain angle, so that the tab 5 is positioned opposite the pressure head 13. This allows for direct contact with the wound battery cell 4, improving the automation of the operation and ensuring good operational continuity. Additionally, a driven wheel is provided at the opposite end of the roller 33, positioning the battery cell 4 between the roller 33 and the driven wheel, improving the rotational flexibility of the battery cell. The rotating mechanism 3 further drives the battery cell 4 to rotate until the tab 5 is rotated to the position corresponding to the pressure head 13, improving the automation level of the tab 5's rotation.

[0064] Bearings are provided on the side of the pressure block 221 and the top rod 212 that are in contact with the battery cell 4. By setting the bearings, when the rotating mechanism 3 drives the battery cell 4 to rotate, the fixing mechanism 2 will not affect the rotation of the battery cell 4, thereby ensuring that the battery cell 4 rotates in a limited position.

[0065] Additionally, please see Figure 9 A motor base can be provided between the motor 32 and the third slide cylinder 31. The rotating mechanism also includes a third mounting plate 35, which is connected between the first mounting plate 111 of the bending mechanism 1 and the third slide cylinder 31. Through this structural design, the overall layout is compact and occupies little space.

[0066] In some embodiments, the rotating mechanism 3 further includes a sensor 34 for sensing the position of the tab 5. In this way, during the rotation of the battery cell 4, the sensor 34 can detect the position of the tab 5. When the tab 5 is detected, the sensor 34 transmits a signal indicating that the tab 5 has been detected to the control center. The control center then sends a stop signal to the motor 32, causing the roller 33 to stop rotating, thereby stopping the battery cell 4 and causing the tab 5 to remain in the corresponding position. The entire process eliminates the need to input the rotation angle at the control center or to uniformly specify the placement state of the battery cell 4. This effectively simplifies the operation process and ensures the accuracy of the tab 5 bending.

[0067] Example 3:

[0068] The difference between this embodiment and Embodiment 2 is as follows, please refer to the appendix. Figure 10 In this embodiment, the lifting assembly 123 includes a first slide cylinder 1231, a connecting plate 1232, and a second slide cylinder 1233. The first slide cylinder 1231 is connected to the second mounting plate 121. One end of the connecting plate 1232 is connected to the driving end of the first slide cylinder 1231, and the other end of the connecting plate 1232 is connected to the second slide cylinder 1233. The driving end of the second slide cylinder 1233 is connected to the pressure head 13. Preferably, the connecting plate 1232 is a reverse Z-shaped connecting plate 1232.

[0069] In this manner, the lifting assembly 123 operates as follows: The first slide cylinder 1231 is activated, causing the connecting plate 1232 to move downwards, which in turn causes the second slide cylinder 1233 to descend a certain distance; subsequently, the second slide cylinder 1233 is activated, causing the pressure head 13 to press down, thereby achieving the pressing action of the pressure head 13 against the tab 5. Specifically, the connection between the second slide cylinder 1233 and the pressure head 13 also adopts a reverse Z-shaped connector. The arrangement of the first slide cylinder 1231, the second slide cylinder 1233, and the connecting plate 1232 minimizes the space occupied during descent, allows for a certain degree of increase in the descent stroke, ensures minimal shift in the center of gravity, and improves the stability of the lifting assembly 123. The overall structure is compact, facilitating large-stroke pressing and ensuring stable and smooth pressing action.

[0070] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0071] In the description of this utility model, 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, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0072] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0073] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0074] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A tab bending device, characterized in that, include: The bending mechanism includes a pressure head, a horizontal moving component, and a vertical moving component. The horizontal moving component is used to drive the pressure head to horizontally bend the tabs on the battery cell; the vertical moving component is used to drive the pressure head to vertically flatten the horizontally bent tabs on the battery cell. A fixing mechanism is provided below the bending mechanism for fixing the battery cell; as well as A rotating mechanism, connected to the bending mechanism and positioned above the fixing mechanism, is used to rotate the battery cell so that the electrode tabs align with the bending mechanism.

2. The electrode bending device according to claim 1, characterized in that, The pressure head includes adjacent pressure surfaces and bending surfaces; The bending surface is used to horizontally bend the tabs on the battery cell; the pressing surface is used to vertically flatten the horizontally bent tabs on the battery cell.

3. The electrode bending device according to claim 2, characterized in that, The horizontal moving component includes: The first cylinder has its drive end connected to the vertically moving component; A first mounting plate is fixedly connected to the first cylinder; and The slider is connected to the lower end of the first mounting plate and is movably connected to the vertical moving component.

4. The electrode bending device according to claim 2, characterized in that, The vertical moving component includes: A second mounting plate is connected to the drive end of the horizontally moving component; and The lifting assembly is connected between the second mounting plate and the pressure head.

5. The electrode bending device according to claim 4, characterized in that, The lifting assembly includes a first slide cylinder, a connecting plate, and a second slide cylinder; The first slide cylinder is connected to the second mounting plate. One end of the connecting plate is connected to the drive end of the first slide cylinder, and the other end of the connecting plate is connected to the second slide cylinder. The drive end of the second slide cylinder is connected to the pressure head.

6. The tab bending device according to any one of claims 1-5, characterized in that, The fixing mechanism includes a first limiting component and a second limiting component arranged opposite to each other. Both the first limiting component and the second limiting component are movable to cooperate in placing the battery cell.

7. The electrode tab bending device according to claim 6, characterized in that, The first limiting component includes a second cylinder and a push rod, with the second cylinder being drivenly connected to the push rod.

8. The electrode bending device according to claim 7, characterized in that, The second limiting component includes a third cylinder and a pressure block, wherein the third cylinder is drivenly connected to the pressure block; the pressure block is arranged opposite to the top rod to cooperate in placing the battery cell.

9. The electrode bending device according to claim 6, characterized in that, The rotating mechanism includes a third slide cylinder, a motor, and rollers. The third slide cylinder is driven by the motor to move the motor. The motor is driven by the rollers to rotate the rollers. The rollers are arranged corresponding to the fixed mechanism.

10. The electrode tab bending device according to claim 9, characterized in that, The rotating mechanism also includes a sensor for sensing the position of the tabs.

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