Tab pre-folding device and battery cell winding equipment

Abstract

The utility model provides a kind of tab pre-folding device and battery cell winding equipment, it is related to battery manufacturing technical field, and the tab pre-folding device includes pre-folding subassembly, over roller subassembly and adjusting assembly.Pre-folding subassembly is provided with pre-folding roller, over roller subassembly is connected with pre-folding subassembly, over roller subassembly is provided with over roller piece, and over roller piece is oppositely arranged with pre-folding roller.Adjusting assembly is movably connected with the side of over roller subassembly deviating from pre-folding subassembly, and adjusting assembly drives over roller subassembly relative movement along the axis direction of over roller piece.The pre-folding roller of the utility model is used to pre-bend for pole piece, adjusting assembly drives over roller subassembly and pre-folding subassembly relative movement along the axis direction of over roller piece, adjusting assembly is used to adjust the relative position between pre-folding roller and pole piece to correct pole piece, so that pole piece is in suitable position to pre-bend, reduce the deviation or misplacement of pole piece in winding process, and then improve the pre-bending effect of tab pre-folding device to tab.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and more specifically, to a tab pre-folding device and a cell winding device. Background Technology

[0002] In the manufacturing process of lithium batteries, the electrodes (positive or negative) need to be bent to ensure the structural stability of the bent tabs, thereby guaranteeing cell safety and cycle life. Common electrode bending mechanisms use a fixed pre-bending method. During the winding and unwinding process, the electrodes are prone to shifting or misalignment, resulting in deviations in the bent parts and affecting the bending accuracy of the electrode bending mechanism. Utility Model Content

[0003] The purpose of this utility model is to provide a tab pre-folding device and a cell winding equipment. The pre-folding roller is used to pre-bend the electrode sheet. When the movable parts move relative to each other, they drive the roller assembly and the pre-folding assembly to move relative to each other along the axial direction of the roller assembly, so that the electrode sheet is in a suitable position to facilitate pre-folding, thereby improving the pre-folding effect of the tab pre-folding device on the tab.

[0004] The first aspect of this utility model provides a tab pre-folding device, which includes:

[0005] A pre-folding assembly, wherein the pre-folding assembly is provided with a pre-folding roller;

[0006] A roller guide assembly is connected to the pre-folding assembly. The roller guide assembly is provided with a roller guide component, which is disposed opposite to the pre-folding roller so that the electrode sheet is located between the roller guide component and the pre-folding roller.

[0007] An adjusting assembly includes a movable component and a transmission component. One side of the movable component is fixedly connected to the roller guide assembly. The transmission component passes through the movable component and is movably connected to the movable component. The movable component reciprocates relative to the transmission component along the axial direction of the roller guide assembly, so that the movable component drives the roller guide assembly and the pre-folding assembly to move relative to each other. The axial direction of the roller guide assembly is a first direction.

[0008] In one possible embodiment of the present invention, the adjustment component further includes a first driving member, which is connected to the transmission member in a transmission manner.

[0009] In one possible embodiment of this utility model, the transmission component is a transmission rod, the movable component is a movable block, one end of the transmission rod is connected to the first driving component, and the transmission rod passes through the movable block, and the movable block is threadedly connected to the transmission rod.

[0010] In one possible embodiment of the present invention, the adjusting component further includes a slide rail, the movable block is slidably connected to the slide rail, and the sliding direction of the movable block on the slide rail is parallel to the axial direction of the transmission rod.

[0011] In one possible embodiment of the present invention, the adjustment assembly further includes a first mounting bracket, the slide rail includes a first slide rail and a second slide rail, the first slide rail and the second slide rail are respectively disposed on opposite sides of the first mounting bracket, and the opposite sides of the movable block are slidably connected to the first slide rail and the second slide rail respectively.

[0012] In one possible embodiment of this utility model, both the transmission rod and the movable block are housed within the first mounting bracket.

[0013] In one possible embodiment of the present invention, the pre-folding assembly includes a second mounting frame, a second driving member, and a pre-folding roller. The pre-folding roller is connected to the second mounting frame via the second driving member. The second mounting frame is connected to the roller passing assembly. The second driving member drives the pre-folding roller to move closer to or away from the roller passing assembly along a second direction, wherein the second direction is perpendicular to the first direction.

[0014] In one possible embodiment of the present invention, the roller assembly further includes a third mounting frame, the third mounting frame being provided with a connecting block, one end of the second mounting frame extending to form an adjustment portion, the adjustment portion of the second mounting frame passing through the connecting block, and the adjustment portion being movably connected to the connecting block, so that the second mounting frame moves relative to the roller assembly along the second direction.

[0015] In one possible embodiment of this utility model, the third mounting bracket is provided with a limiting groove, the limiting groove is located close to the connecting block, the second mounting bracket is engaged with the groove wall of the limiting groove, and the second mounting bracket moves relative to the limiting groove along the second direction.

[0016] A second aspect of this utility model provides a battery cell winding device, including the tab pre-folding device described in any of the above embodiments.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides an electrode tab pre-folding device and a battery cell winding equipment. The pre-folding roller and the guide roller are arranged opposite to each other, so that the electrode sheet is placed between the pre-folding roller and the guide roller. During the battery cell winding process, the electrode sheet will pass through the gap between the pre-folding roller and the guide roller. The pre-folding roller is used to pre-bend the electrode sheet. The adjusting component is used to adjust the relative position between the guide roller, the pre-folding roller and the electrode sheet. The transmission component can drive the moving component to reciprocate. When the moving component moves relative to each other, it drives the guide roller component and the pre-folding component to move relative to each other along the axial direction of the guide roller component, so that the electrode sheet is in a suitable position to facilitate pre-bending, reducing the situation of electrode sheet shifting or misalignment during winding, thereby improving the pre-bending effect of the electrode tab pre-folding device on the electrode tab. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the tab pre-folding device provided in some embodiments of the present invention. Figure 1 ;

[0020] Figure 2 This is a three-dimensional structural diagram of the tab pre-folding device provided in some embodiments of the present invention. Figure 2 ;

[0021] Figure 3 This is a cross-sectional view of the electrode pre-folding device provided in some embodiments of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the tab pre-folding device provided in some embodiments of the present invention. Figure 3 .

[0023] Explanation of key component symbols;

[0024] 100 - Electrode pre-folding device; 110 - Pre-folding assembly; 111 - Pre-folding roller; 112 - Second mounting bracket; 1121 - Adjustment part; 113 - Second driving component; 120 - Roller assembly; 121 - Roller component; 122 - Third mounting bracket; 1221 - Limiting groove; 1222 - Connecting block; 130 - Adjustment assembly; 131 - Transmission component; 1311 - Transmission rod; 1312 - Slide rail; 1312a - First slide rail; 1312b - Second slide rail; 1313 - First mounting bracket; 132 - Movable part; 133 - First driving component; 200 - Electrode sheet; X - First direction; Y - Second direction; Z - Third direction. Detailed Implementation

[0025] 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. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] 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.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] 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.

[0029] 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.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] refer to Figure 1 As shown, an embodiment of this application provides a tab pre-folding device 100, which includes a pre-folding component 110, a roller component 120, and an adjusting component 130.

[0033] Specifically, in combination Figure 1 and Figure 2As shown, the pre-folding assembly 110 is provided with a pre-folding roller 111, which can pre-bend the electrode sheet 200. The roller passing assembly 120 is connected to the pre-folding assembly 110. The roller passing assembly 120 is provided with a roller passing component 121, which is disposed opposite to the pre-folding roller 111, so that the electrode sheet 200 is disposed between the roller passing component 121 and the pre-folding roller 111. The adjusting assembly 130 includes a movable member 132 and a transmission member 131. One side of the movable member 132 is fixedly connected to the roller passing assembly 120. The transmission member 131 passes through the movable member 132 and is movably connected to the movable member 132. The movable member 132 reciprocates relative to the transmission member 131 along the axial direction of the roller passing assembly 121, so that the movable member 132 drives the roller passing assembly 120 and the pre-folding assembly 110 to move relative to each other. The axial direction of the roller passing assembly 121 is a first direction X. The pre-folding roller 111 and the roller passing assembly 121 are arranged opposite each other, so that the electrode 200 is placed between the pre-folding roller 111 and the roller passing assembly 121. The pre-folding roller 111 and the roller passing assembly 121 are used to clamp the electrode 200 during the cell winding and unfolding process. The intermediate electrode sheet 200 passes through the gap between the pre-folding roller 111 and the guide roller 121. The pre-folding roller 111 is used to pre-bend the electrode sheet 200. The adjusting component 130 is used to adjust the relative position between the pre-folding roller 111 and the electrode sheet 200 to correct the deviation of the electrode sheet 200. The adjusting component 130 is used to adjust the relative position between the guide roller 121, the pre-folding roller 111 and the electrode sheet 200. The transmission component 131 can drive the movable component 132 to reciprocate. When the movable component 132 moves relative to the electrode sheet, it drives the guide roller component 120 and the pre-folding component 110 to move relative to each other along the axial direction of the guide roller component 121, so that the electrode sheet 200 is in a suitable position to facilitate pre-folding, reducing the deviation or misalignment of the electrode sheet 200 during the winding process, thereby improving the pre-folding effect of the electrode tab pre-folding device 100 on the electrode tab.

[0034] refer to Figure 1 and Figure 2 As shown, the tab pre-folding device 100 has a first direction X, a second direction Y, and a third direction Z, wherein the first direction X, the second direction Y, and the third direction Z are arranged perpendicularly to each other. For example, the first direction X is taken as the length direction of the tab pre-folding device 100, the second direction Y is taken as the height direction of the tab pre-folding device 100, and the third direction Z is taken as the width direction of the tab pre-folding device 100. It is understood that the above definitions are only for the purpose of understanding the relative positional relationships of the various parts in the tab pre-folding device 100 and should not be construed as limiting this application.

[0035] It is understandable that one end of the electrode sheet 200 protrudes to form an electrode tab. During the conveying process of the electrode sheet 200, the electrode tab on the electrode sheet 200 is pre-bent by the electrode tab pre-folding device 100. For example, the pre-folding roller 111 is provided with a bending part. The bending part interacts with the electrode tab on the electrode sheet 200 to bend the position of the electrode tab on the electrode sheet 200. The pre-folding roller 111 and the roller 121 are aligned with the electrode tab on the electrode sheet 200 to improve the pre-folding quality of the electrode tab and the flattening quality of the subsequent process. For example, the electrode sheet 200 is stretched and conveyed along the third direction Z by traction. The electrode sheet 200 is prone to displacement or misalignment during the movement and conveying process, but the position of the bending part of the pre-folding roller 111 remains unchanged, which will affect the accuracy of the pre-folding position of the electrode sheet 200 and cause the non-electrode part of the electrode sheet 200 to be bent.

[0036] In one embodiment, optionally, combining Figure 1 and Figure 2 As shown, the adjustment component 130 also includes a first driving member 133, which is connected to the transmission member 131. The first driving member 133 drives the movable member 132 to move relative to each other through the transmission member 131, so that the movable member 132 drives the roller assembly 120 and the pre-folding assembly 110 to change position, so as to adjust the position of the roller assembly 120 and the pre-folding assembly 110 relative to the electrode sheet 200 and improve the pre-bending effect of the electrode tab during the conveying process of the electrode sheet 200.

[0037] In one embodiment, alternatively, referencing Figure 1 As shown, the transmission component 131 is a transmission rod 1311, and the movable component 132 is a movable block. The movable component 132 is movably connected to the transmission component 131. One end of the transmission rod 1311 is connected to the first driving component 133, and the transmission rod 1311 passes through the movable block. The movable block is threadedly connected to the transmission rod 1311. Correspondingly, the movable component 132 is movable relative to the transmission rod 1311. Under the action of external force, the transmission component 131 drives the movable component 132 to move relative to each other along the first direction X, so as to achieve the purpose of the movable component 132 driving the roller assembly 120 and the pre-folding assembly 110 to move, so as to adjust the position of the roller assembly 120 and the pre-folding assembly 110 relative to the electrode 200, so that the electrode tab of the electrode 200 can be aligned with the roller component 121 of the roller assembly 120 and the pre-folding roller 111 of the pre-folding assembly 110.

[0038] Optionally, combined Figure 2 and Figure 3As shown, the adjustment component 130 also includes a slide rail 1312. The movable block is slidably connected to the slide rail 1312. The sliding direction of the movable block on the slide rail 1312 is parallel to the axial direction of the transmission rod 1311. The first driving member 133 drives the transmission rod 1311 to rotate relative to each other, so that the transmission rod 1311 drives the movable block to move relative to each other along the rod body of the transmission rod 1311. At this time, the movable block still moves along the slide rail 1312. The slide rail 1312 is used to regulate and limit the movement of the movable block to avoid the movable block from deviating during the movement and to ensure the accuracy of the movement of the movable block.

[0039] In summary, the pre-folding roller 111 and the guide roller 121 of the electrode pre-folding device 100 are arranged opposite each other, so that the electrode 200 is placed between the pre-folding roller 111 and the guide roller 121. During the winding of the battery cell, the electrode 200 will pass through the gap between the pre-folding roller 111 and the guide roller 121. The pre-folding roller 111 is used to pre-bend the electrode 200. The adjusting component 130 is used to adjust the relative position between the guide roller 121, the pre-folding roller 111 and the electrode 200. The transmission component 131 can drive the movable component 132 to reciprocate. When the movable component 132 moves relative to each other, it drives the guide roller component 120 and the pre-folding component 110 to move relative to each other along the axial direction of the guide roller 121, so that the electrode 200 is in a suitable position to facilitate pre-folding, reducing the possibility of the electrode 200 shifting or misaligning during the winding process, thereby improving the pre-folding effect of the electrode pre-folding device 100 on the electrode.

[0040] refer to Figures 1 to 3 As shown, an embodiment of this application provides another tab pre-folding device 100, which includes a pre-folding component 110, a roller passing component 120, and an adjusting component 130.

[0041] Specifically, in combination Figure 1 and Figure 2 As shown, the pre-folding assembly 110 is provided with a pre-folding roller 111, which can pre-bend the electrode sheet 200. The roller passing assembly 120 is connected to the pre-folding assembly 110. The roller passing assembly 120 is provided with a roller passing component 121, which is arranged opposite to the pre-folding roller 111 so that the electrode sheet 200 is placed between the roller passing component 121 and the pre-folding roller 111. The electrode sheet 200 is placed between the pre-folding roller 111 and the roller passing component 121. The pre-folding roller 111 and the roller passing component 121 are used to clamp the electrode sheet 200. During the winding and unfolding of the battery cell, the electrode sheet 200 will pass through the gap between the pre-folding roller 111 and the roller passing component 121. The pre-folding roller 111 is used to pre-bend the electrode sheet 200.

[0042] In this embodiment, the adjusting component 130 includes a movable member 132 and a transmission member 131. One side of the movable member 132 is fixedly connected to the roller guide assembly 120. The transmission member 131 passes through the movable member 132 and is movably connected to the movable member 132. The movable member 132 reciprocates relative to the transmission member 131 along the axial direction of the roller guide assembly 121, so that the movable member 132 drives the roller guide assembly 120 and the pre-folding assembly 110 to move relative to each other. The roller guide assembly 121... The axis direction is the first direction X. The pre-folding roller 111 and the guide roller 121 are arranged opposite to each other. The adjusting component 130 drives the guide roller 120 and the pre-folding component 110 to move relative to each other along the axis direction of the guide roller 121. The adjusting component 130 is used to adjust the relative position between the pre-folding roller 111 and the electrode 200 to correct the electrode 200, so that the electrode 200 is in a suitable position to facilitate pre-folding, reduce the offset or misalignment of the electrode 200 during the winding process, and thus improve the pre-folding effect of the electrode tab pre-folding device 100 on the electrode tab.

[0043] In one embodiment, optionally, combining Figure 1 and Figure 2 As shown, the adjustment component 130 further includes a first driving member 133, which is connected to the transmission member 131. The first driving member 133 drives the movable member 132 to move relative to the transmission member 131, causing the movable member 132 to move the roller assembly 120 and the pre-folding assembly 110 to adjust their positions relative to the electrode sheet 200, thereby improving the pre-bending effect of the electrode tabs during the electrode sheet 200 conveying process. For example, the first driving member 133 can be a servo motor. A servo motor controls the operation of mechanical components in a servo system, converting voltage signals into torque and speed to drive the controlled object. It can precisely control position, speed, and acceleration, and has a fast response capability. It can convert electrical signals into angular displacement or angular velocity output on the motor shaft. Of course, the first driving member 133 can also be other types of drive motors.

[0044] Optionally, refer to Figure 1As shown, the transmission component 131 is a transmission rod 1311, and the movable component 132 is a movable block. The movable component 132 is movably connected to the transmission component 131. One end of the transmission rod 1311 is connected to the first driving component 133, and the transmission rod 1311 passes through the movable block. The movable block is threadedly connected to the transmission rod 1311. Correspondingly, the movable component 132 is movable relative to the transmission rod 1311. Under the action of external force, the transmission component 131 drives the movable component 132 to move relative to each other along the first direction X, so as to achieve the purpose of the movable component 132 driving the roller assembly 120 and the pre-folding assembly 110 to move, so as to adjust the position of the roller assembly 120 and the pre-folding assembly 110 relative to the electrode 200, so that the electrode tab of the electrode 200 can be aligned with the roller component 121 of the roller assembly 120 and the pre-folding roller 111 of the pre-folding assembly 110.

[0045] Optionally, combined Figure 2 and Figure 3 As shown, the adjustment assembly 130 further includes a slide rail 1312. The movable block is slidably connected to the slide rail 1312. The sliding direction of the movable block on the slide rail 1312 is parallel to the axial direction of the transmission rod 1311. The first driving member 133 drives the transmission rod 1311 to rotate relative to it, causing the transmission rod 1311 to drive the movable block to move relative to it along the rod body of the transmission rod 1311. At this time, the movable block still moves along the slide rail 1312. The slide rail 1312 is used to regulate and limit the movement of the movable block, preventing the movable block from deviating during movement and ensuring the accuracy of the movement of the movable block. For example, the transmission rod 1311 is a transmission screw, and the movable block is provided with a through hole. The transmission screw passes through the through hole and is threadedly connected to the hole wall of the movable block.

[0046] Optionally, refer to Figure 2 As shown, the adjustment component 130 includes a first mounting bracket 1313, and the slide rail 1312 includes a first slide rail 1312a and a second slide rail 1312b. The first slide rail 1312a and the second slide rail 1312b are respectively disposed on opposite sides of the first mounting bracket 1313. The opposite sides of the movable block are slidably connected to the first slide rail 1312a and the second slide rail 1312b, respectively. The first mounting bracket 1313 is used to place the first slide rail 1312a and the second slide rail 1312b, that is, one side of the movable block moves on the first slide rail 1312a, and the side of the movable block away from the first slide rail 1312a moves on the second slide rail 1312b. The first slide rail 1312a and the second slide rail 1312b respectively regulate and limit the opposite sides of the movable block to ensure the movement path of the movable block.

[0047] Optionally, such as Figure 3As shown, the transmission rod 1311 and the movable block are both housed within the first mounting frame 1313, so that the transmission rod 1311 and the movable block are respectively mounted within the first mounting frame 1313. The first mounting frame 1313 defines a receiving space, and the transmission rod 1311 and the movable block are both disposed within the receiving space. The movable block moves relative to the transmission rod 1311 within the receiving space. The first mounting frame 1313 is connected to the first driving member 133.

[0048] Based on any of the above embodiments, optionally, refer to Figure 2 As shown, the pre-folding assembly 110 includes a second mounting frame 112, a second driving member 113, and a pre-folding roller 111. The pre-folding roller 111 is connected to the second mounting frame 112 via the second driving member 113. The second mounting frame 112 is connected to the roller passing assembly 120. The second driving member 113 drives the pre-folding roller 111 to move closer to or away from the roller passing assembly 121 along a second direction Y. The second direction Y is perpendicular to the first direction X. In other words, the second driving member 113 can drive the pre-folding roller 111 to move along the second direction Y, so that the pre-folding roller 111 moves closer to the roller passing assembly 121 to jointly clamp and bend the electrode 200, or move along the second direction Y in a direction away from the roller passing assembly 121 to release the clamping of the electrode 200, which facilitates the adjustment of the setting position of the pre-folding roller 111 and improves the adjustment flexibility of the pre-folding roller 111. For example, the second driving component 113 can be a driving cylinder. Of course, the second driving component 113 can also be a driving motor, and no specific limitation is made here.

[0049] Optionally, combined Figure 2 and Figure 4 As shown, the roller assembly 120 further includes a third mounting bracket 122, which is provided with a connecting block 1222. One end of the second mounting bracket 112 extends to form an adjustment portion 1121. The adjustment portion 1121 of the second mounting bracket 112 passes through the connecting block 1222 and is movably connected to the connecting block 1222, so that the second mounting bracket 112 can move relative to the roller assembly 120 along the second direction Y. The adjustment portion 1121 passes through the connecting block 1222 and is fixed by an adjusting bolt. The adjustment portion 1121 and the connecting block 1222 cooperate to adjust the relative position between the second mounting bracket 112 and the third mounting bracket 122, further adjusting the installation height of the second mounting bracket 112 and the pre-folding roller 111, and improving the adaptability of the pre-folding assembly 110.

[0050] Furthermore, such as Figure 4As shown, the third mounting bracket 122 is provided with a limiting groove 1221. The limiting groove 1221 is located near the connecting block 1222. The second mounting bracket 112 is engaged with the groove wall of the limiting groove 1221, and the second mounting bracket 112 moves relative to the limiting groove 1221 along the second direction Y. When the second mounting bracket 112 moves relative to the third mounting bracket 122, the limiting groove 1221 is used to limit and regulate the movement path of the second mounting bracket 112. The second mounting bracket 112 abuts against the groove wall of the limiting groove 1221 and moves relative to the groove wall of the limiting groove 1221, so that the second mounting bracket 112 has a certain adjustment space and ensures the connection stability of the second mounting bracket 112 and the third mounting bracket 122.

[0051] An embodiment of this utility model also provides a battery cell winding device, which includes the tab pre-bending device 100 in the above embodiment. The tab pre-bending device 100 is used to pre-bend the tab. The battery cell winding device including the tab pre-bending device 100 has all the beneficial effects of the tab pre-bending device 100, which will not be described in detail here.

[0052] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0053] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A pre-folding device for electrode tabs, characterized in that, include: A pre-folding assembly, wherein the pre-folding assembly is provided with a pre-folding roller; A roller guide assembly is connected to the pre-folding assembly. The roller guide assembly is provided with a roller guide component, which is disposed opposite to the pre-folding roller so that the electrode sheet is located between the roller guide component and the pre-folding roller. An adjusting assembly includes a movable component and a transmission component. One side of the movable component is fixedly connected to the roller guide assembly. The transmission component passes through the movable component and is movably connected to the movable component. The movable component reciprocates relative to the transmission component along the axial direction of the roller guide assembly, so that the movable component drives the roller guide assembly and the pre-folding assembly to move relative to each other. The axial direction of the roller guide assembly is a first direction.

2. The electrode pre-folding device according to claim 1, characterized in that, The adjustment assembly further includes a first driving member, which is connected to the transmission member in a transmission manner.

3. The electrode pre-folding device according to claim 2, characterized in that, The transmission component is a transmission rod, the movable component is a movable block, one end of the transmission rod is connected to the first driving component, and the transmission rod passes through the movable block, and the movable block is threadedly connected to the transmission rod.

4. The electrode pre-folding device according to claim 3, characterized in that, The adjustment assembly also includes a slide rail, and the movable block is slidably connected to the slide rail. The sliding direction of the movable block on the slide rail is parallel to the axial direction of the transmission rod.

5. The electrode pre-folding device according to claim 4, characterized in that, The adjustment assembly further includes a first mounting bracket, and the slide rail includes a first slide rail and a second slide rail. The first slide rail and the second slide rail are respectively disposed on opposite sides of the first mounting bracket, and the opposite sides of the movable block are slidably connected to the first slide rail and the second slide rail respectively.

6. The electrode pre-folding device according to claim 5, characterized in that, Both the transmission rod and the movable block are housed within the first mounting frame.

7. The electrode pre-folding device according to any one of claims 1 to 6, characterized in that, The pre-folding assembly includes a second mounting frame, a second driving member, and a pre-folding roller. The pre-folding roller is connected to the second mounting frame via the second driving member. The second mounting frame is connected to the roller guide assembly. The second driving member drives the pre-folding roller to move closer to or away from the roller guide assembly along a second direction, which is perpendicular to the first direction.

8. The electrode pre-folding device according to claim 7, characterized in that, The roller assembly further includes a third mounting frame, which is provided with a connecting block. One end of the second mounting frame extends to form an adjustment portion. The adjustment portion of the second mounting frame passes through the connecting block and is movably connected to the connecting block, so that the second mounting frame can move relative to the roller assembly along the second direction.

9. The electrode pre-folding device according to claim 8, characterized in that, The third mounting bracket is provided with a limiting groove, which is located close to the connecting block. The second mounting bracket is engaged with the groove wall of the limiting groove, and the second mounting bracket moves relative to the limiting groove along the second direction.

10. A battery cell winding device, characterized in that, Includes the tab pre-folding device according to any one of claims 1 to 9.

Images