Tab dislocation correction device and winding equipment
By designing a tab misalignment correction device, the position of the tabs is adjusted using pressure rollers and pushers, which solves the problem of tab misalignment during cell winding, thereby improving cell production yield and saving costs.
Patent Information
- Application Number
- CN202423032878.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing technology cannot correct electrode misalignment during the cell winding process, resulting in a high electrode misalignment defect rate and affecting the cell production yield.
A device for correcting electrode misalignment is designed, comprising a first pressure roller, a second pressure roller, a moving component, and a pushing component. The electrode position is corrected by adjusting the gap between the pressure rollers and rotating the component, and the electrode alignment is achieved by using the moving component and the pushing component to press against the arc-shaped corner of the battery cell.
It effectively corrects electrode misalignment, improves cell production yield, reduces product scrap, saves costs, and increases production efficiency.
Smart Images
Figure CN223680148U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of battery cell manufacturing, in particular to a tab misplacement correction device and winding equipment. BACKGROUND
[0002] With the rapid development of lithium ion battery technology, at present, whether it is energy storage battery or power battery, its development direction is towards the direction of large battery. With the increase of the number of battery winding and size, the tab misplacement defect rate of the battery will also increase. For example, when the 18m long pole piece is wound, even if only one misplacement defect battery is produced during the winding, the tab misplacement defect rate is about 1%, which is a great loss to the battery. The existing preparation process cannot correct the battery with tab misplacement in the winding process, and only the misplacement amount of the next battery can be adjusted. SUMMARY
[0003] The utility model aims to provide a tab misplacement correction device and winding equipment, which can correct the battery with tab misplacement, so as to improve the production yield of the battery.
[0004] The embodiment of the utility model can be realized as follows:
[0005] In the first aspect, the utility model provides a tab misplacement correction device, which comprises:
[0006] A first pressure roller;
[0007] A second pressure roller, a gap is formed between the first pressure roller and the second pressure roller, and the gap is used to place a battery with misplacement tab;
[0008] A first moving assembly, the first pressure roller and / or the second pressure roller are connected with the first moving assembly, so as to adjust the gap between the first pressure roller and the second pressure roller;
[0009] A rotating assembly, the rotating assembly is connected with the first pressure roller and the second pressure roller respectively, so as to drive the first pressure roller and the second pressure roller to rotate;
[0010] A pushing piece;
[0011] A second moving assembly, the second moving assembly is connected with the pushing piece, and the pushing piece is used to press the arc corner part of the battery.
[0012] In the optional embodiment, the pushing piece comprises a mounting part and a circular arc part connected with each other, the mounting part is connected with the second moving assembly, and the circular arc part is used to press the arc corner part of the battery.
[0013] In an optional embodiment, the first moving assembly comprises a first vertical column and a first lifting unit arranged on the first vertical column, and the first lifting unit is configured to drive the first pressing wheel and / or the second pressing wheel to move in a first direction.
[0014] In an optional embodiment, the first pressing wheel is arranged on a first pressing plate, and the first pressing plate is connected to the first lifting unit.
[0015] In an optional embodiment, the second pressing plate is arranged opposite to the first pressing plate in the first direction, and a through hole is arranged on the second pressing plate; the second pressing wheel is arranged on a side of the second pressing plate away from the first pressing plate, and a part of the second pressing wheel is exposed from the through hole and protrudes from a surface of the second pressing plate facing the first pressing plate.
[0016] In an optional embodiment, the first pressing wheel comprises two first pressing wheels arranged opposite to each other in a second direction, and the second pressing wheel comprises two second pressing wheels arranged opposite to each other in the second direction; the first pressing wheels and the second pressing wheels are configured to press against two flat surfaces of the battery cell near the arc-shaped corner portions, respectively.
[0017] The pushing member comprises two pushing members arranged opposite to each other in the second direction and configured to press against the two arc-shaped corner portions of the battery cell, respectively; and the first direction and the second direction are arranged at an angle.
[0018] In an optional embodiment, the second moving assembly comprises a second vertical column, a second lifting unit, and a horizontal moving unit extending in a second direction; the second vertical column is connected to the horizontal moving unit, and the second lifting unit is arranged on the second vertical column; and the second lifting unit is connected to the pushing member.
[0019] In an optional embodiment, the second vertical column comprises two second vertical columns connected to the same horizontal moving unit in a sliding manner, and the second lifting unit is arranged on each of the second vertical columns; and the second lifting unit is connected to the pushing member.
[0020] In an optional embodiment, the rotating assembly comprises a first driving member and a second driving member; the first driving member is connected to the first pressing wheel; and the second driving member is connected to the second pressing wheel.
[0021] In a second aspect, the utility model provides a winding equipment, including the tab misalignment correction device of any one of preceding embodiments.
[0022] The beneficial effects of the tab misplacement correction device and the winding equipment provided in the embodiments of the present application include:
[0023] The tab misplacement correction device provided in the embodiments of the present application can drive the first compression wheel and / or the second compression wheel to move, so as to adjust the gap between the first compression wheel and the second compression wheel, and facilitate compression holding of the battery cell. The blanking clamp jaw can be separated in the case of compression holding of the battery cell, so as to prevent the wrinkling of the arc corner part of the battery cell and prevent the problems such as core extraction of the diaphragm. The rotating assembly can drive the first compression wheel and the second compression wheel to rotate. The second moving assembly is connected with the pushing piece, and the pushing piece is used for pressing the arc corner part of the battery cell. The pushing piece moves horizontally according to the misplacement direction and misplacement amount of the tab, and at the same time, the first compression wheel and the second compression wheel rotate synchronously, so as to jointly change the position of the arc corner part of the battery cell, thereby correcting the position of the tab and realizing the correction of the misplacement tab. The device is simple to operate and reliable in correction, can effectively adjust the position of the misplacement tab, and improves the alignment rate of the tab.
[0024] The winding equipment provided in the embodiments of the present application includes the above-mentioned tab misplacement correction device, can discover the misplacement of the tab and timely correct the position of the tab, and reduces the risk of tab misplacement. The winding equipment improves the production yield of the battery cell, reduces product scrappage, saves cost, and improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.
[0026] Figure 1 The structure schematic diagram of the tab misplacement correction device in the first view is provided for the embodiments;
[0027] Figure 2 The structure schematic diagram of the tab misplacement correction device in the second view is provided for the embodiments;
[0028] Figure 3 The structure schematic diagram of the battery cell with misplacement tab to be corrected is provided for the embodiments;
[0029] Figure 4 The structure schematic diagram of the tab misplacement correction device when not placing the battery cell is provided for the embodiments;
[0030] Figure 5 The structure schematic diagram of the second compression plate of the tab misplacement correction device is provided for the embodiments;
[0031] Figure 6The first perspective view of the pushing piece of the tab misalignment correction device provided in the embodiment is shown in the structural schematic diagram;
[0032] Figure 7 The second perspective view of the pushing piece of the tab misalignment correction device provided in the embodiment is shown in the structural schematic diagram;
[0033] Figure 8 The first driving piece and the first compression wheel of the tab misalignment correction device provided in the embodiment are connected in the structural schematic diagram.
[0034] Icon: 100-tab misalignment correction device; 111-first compression wheel; 113-second compression wheel; 114-first driving piece; 115-second driving piece; 116-coupling; 120-first moving assembly; 121-first vertical column; 123-first lifting unit; 125-first compression plate; 127-second compression plate; 128-through hole; 129-brace; 130-pushing piece; 131-mounting part; 133-circular arc part; 140-second moving assembly; 141-second vertical column; 142-second lifting unit; 143-cross moving unit; 151-first motor; 152-second motor; 153-third motor; 200-battery cell; 210-tab; 220-arc-shaped corner part; 230-flat surface. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0036] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.
[0037] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0038] In the description of the utility model, it needs to be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the utility model product when it is usually placed, it is only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the utility model.
[0039] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0040] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.
[0041] The tab misalignment correction device 100 provided by the utility model can correct the misaligned tab 210, improve the alignment rate of the tab 210, and improve the production yield of the battery cell 200.
[0042] Please refer to Figures 1 to 3 The tab misalignment correction device 100 provided by the utility model includes a first pressure roller 111, a second pressure roller 113, a first moving assembly 120, a rotating assembly, a pushing piece 130 and a second moving assembly 140. The first pressure roller 111 and the second pressure roller 113 form a gap for placing the battery cell 200 with the misaligned tab 210. The first pressure roller 111 and / or the second pressure roller 113 are connected with the first moving assembly 120 to adjust the gap between the first pressure roller 111 and the second pressure roller 113. The rotating assembly is connected with the first pressure roller 111 and the second pressure roller 113 respectively to drive the first pressure roller 111 and the second pressure roller 113 to rotate. The second moving assembly 140 is connected with the pushing piece 130, and the pushing piece 130 is used to press the arc-shaped corner part 220 of the battery cell 200. The tab misalignment correction device 100 can correct the battery cell 200 with the misaligned tab 210 to improve the production yield of the battery cell 200.
[0043] In this embodiment, the first pressing wheel 111 is connected with the first moving assembly 120, and the first moving assembly 120 drives the first pressing wheel 111 to move along the vertical direction. The position of the second pressing wheel 113 in the vertical direction is fixed. The distance between the first pressing wheel 111 and the second pressing wheel 113 in the vertical direction, i.e., the gap height in the vertical direction, is adjusted by the movement of the first pressing wheel 111 in the vertical direction. Of course, in other embodiments, the first moving assembly 120 can also be connected with the second pressing wheel 113 to drive the second pressing wheel 113 to move, and the position of the first pressing wheel 111 is fixed, so that the gap height in the vertical direction between the first pressing wheel 111 and the second pressing wheel 113 can also be achieved. Alternatively, the first moving assembly 120 is connected with the first pressing wheel 111 and the second pressing wheel 113 respectively to drive the first pressing wheel 111 and the second pressing wheel 113 to move respectively, so as to adjust the gap height in the vertical direction between the first pressing wheel 111 and the second pressing wheel 113. Here, no specific limitation is made.
[0044] Optionally, the first moving assembly 120 comprises a first vertical column 121 and a first lifting unit 123 arranged on the first vertical column 121, and the first lifting unit 123 is used to drive the first pressing wheel 111 and / or the second pressing wheel 113 to move along the first direction. In this embodiment, the first lifting unit 123 is connected with the first pressing wheel 111 to drive the first pressing wheel 111 to move up and down in the vertical direction, i.e., the first direction is the vertical direction.
[0045] Optionally, the first moving assembly 120 further comprises a first pressing plate 125, and the first pressing wheel 111 is arranged on the first pressing plate 125; the first pressing plate 125 is connected with the first lifting unit 123. The first pressing plate 125 is used to mount the first pressing wheel 111. A first motor 151 is arranged on the first vertical column 121, and the first motor 151 drives the first lifting unit 123 to move, so as to drive the first pressing plate 125 and the first pressing wheel 111 to move up and down.
[0046] In combination with Figure 4 and Figure 5 , optionally, the first moving assembly 120 further comprises a second pressing plate 127. The second pressing plate 127 and the first pressing plate 125 are oppositely arranged along the first direction. The first direction is the vertical direction shown in Figure 1 , which is also the moving direction of the first pressing wheel 111 driven by the first lifting unit 123. The second pressing plate 127 is used to mount the second pressing wheel 113. A through hole 128 is arranged on the second pressing plate 127; the second pressing wheel 113 is arranged on the side of the second pressing plate 127 away from the first pressing plate 125, and part of the second pressing wheel 113 is exposed from the through hole 128, and the exposed part protrudes from the surface of the second pressing plate 127 towards the first pressing plate 125. In this embodiment, the second pressing plate 127 is fixedly connected with the four supporting columns 129 and is fixedly mounted on the four supporting columns 129, so that the position of the second pressing wheel 113 in the vertical direction is relatively fixed.
[0047] It can be understood that the first pressing wheel 111 is arranged on one side of the first pressing plate 125 facing the second pressing plate 127. The battery cell 200 is placed between the first pressing plate 125 and the second pressing plate 127 and is in contact with the first pressing wheel 111 and the second pressing wheel 113 respectively. By adjusting the gap between the first pressing wheel 111 and the second pressing wheel 113, the gap is approximately equal to the thickness of the battery cell 200. It should be understood that, in the state of modifying the tab 210, the first pressing wheel 111 and the second pressing wheel 113 are in contact with the two flat surfaces 230 of the battery cell 200 respectively, and a certain pressure is applied to the flat surfaces 230 of the battery cell 200.
[0048] Optionally, the first pressing wheel 111 includes two, and the second pressing wheel 113 includes two. The two first pressing wheels 111 are oppositely arranged along the second direction, and the two second pressing wheels 113 are oppositely arranged along the second direction. The first pressing wheel 111 and the second pressing wheel 113 are respectively used for pressing the two flat surfaces 230 of the battery cell 200 close to the arc-shaped corner portions 220. The arc-shaped corner portions 220 are used for transitionally connecting the two flat surfaces 230. The two arc-shaped corner portions 220 are arranged at intervals in the second direction. The first direction and the second direction are arranged at an angle. The second direction is the left-right direction shown in Figure 2 .
[0049] In this embodiment, the pushing member 130 includes two, and the two pushing members 130 are oppositely arranged along the second direction and are respectively used for pressing the two arc-shaped corner portions 220 of the battery cell 200.
[0050] In combination with Figure 6 and Figure 7 , the pushing member 130 includes a mounting portion 131 and a circular arc portion 133 connected with each other. The mounting portion 131 is connected with the second moving assembly 140, and the circular arc portion 133 is used for pressing the arc-shaped corner portion 220 of the battery cell 200. The pushing member 130 can be a pushing wheel, a pushing plate or a pushing rod, etc., as long as it has the circular arc portion 133 for pressing the arc-shaped corner portion 220 of the battery cell 200, and the structure form is not limited.
[0051] Optionally, the second moving assembly 140 includes a second stand column 141, a second lifting unit 142 and a horizontal moving unit 143 extending along the second direction. The second stand column 141 is connected with the horizontal moving unit 143, and the second lifting unit 142 is arranged on the second stand column 141. The second lifting unit 142 is connected with the pushing member 130 and is used for driving the pushing member 130 to move up and down along the vertical direction, so that the circular arc portion 133 of the pushing member 130 can better press the arc-shaped corner portion 220 of the battery cell 200.
[0052] Optionally, the second column 141 includes two, and the two second columns 141 are slidingly connected to the same horizontal moving unit 143. In this way, the structure is more compact, and the moving precision is higher. The two second columns 141 are respectively provided with second lifting units 142, and each second lifting unit 142 is connected with a pushing piece 130. The two pushing pieces 130 are used to correspondingly abut on the two arc-shaped corner portions 220 of the battery cell 200.
[0053] One of the second columns 141 is provided with a second motor 152, and the second motor 152 drives the movement of one of the second lifting units 142 to drive the lifting movement of one of the pushing pieces 130. The other second column 141 is provided with another second motor 152, and the second motor 152 drives the movement of the other second lifting unit 142 to drive the lifting movement of the other pushing piece 130.
[0054] In combination Figure 8 Optionally, the rotating assembly includes a first driving piece 114 and a second driving piece 115, the first driving piece 114 is connected with the first pressing wheel 111, and the second driving piece 115 is connected with the second pressing wheel 113. The first driving piece 114 and the second driving piece 115 respectively adopt a driving motor for driving the rotation of the first pressing wheel 111 and the second pressing wheel 113. It can be understood that the driving motor is connected with a shaft coupling 116 for driving the rotation of the first pressing wheel 111 and the second pressing wheel 113.
[0055] The correction method of the tab misalignment correction device 100 is as follows:
[0056] It should be noted that the winding needle of each winding machine is provided with a pair of photoelectric sensors, and the actual position of the tab 210 and the winding degree of the winding needle can be sensed and detected by the photoelectric sensors. Therefore, the winding machine can know in advance whether the tab 210 of the current battery cell 200 is misaligned.
[0057] In the case of tab 210 misalignment, the blanking clamp jaw takes down the battery cell 200 and pulls it apart, as shown in Figure 3 Then the blanking clamp jaw places the battery cell 200 on the second pressing plate 127 and contacts the second pressing wheel 113, at which time the tab misalignment correction device 100 intervenes to start working.
[0058] The first motor 151 drives the first pressing plate 125 to move downward through the first lifting unit 123, reduces the gap between the first pressing wheel 111 and the second pressing wheel 113, and makes the first pressing wheel 111 and the second pressing wheel 113 press the battery cell 200. As shown in Figure 2As shown, the two first pressing wheels 111 and the two second pressing wheels 113 press the flat surface 230 of the battery cell 200 near the arc-shaped corner portion 220. In the case that the first pressing wheels 111 and the second pressing wheels 113 hold the battery cell 200, the blanking gripper is extracted. Since the battery cell 200 has been held and fixed by the first pressing wheels 111 and the second pressing wheels 113, and at this time the arc-shaped corner portion 220 of the battery cell 200 has not been formed, when the blanking gripper is extracted, the problems such as the corner portion of the battery cell 200 being wrinkled, the diaphragm being extracted, and the like, will not occur.
[0059] After the blanking gripper is extracted, the two second motors 152 drive the two pushers 130 to move up and down, so that the arc-shaped portions 133 of the two pushers 130 respectively move to contact the arc-shaped corner portion 220 of the battery cell 200. Optionally, the contact points of the arc-shaped portions 133 of the pushers 130 with the battery cell 200 are located in the direction of the 45° angle between the arc-shaped corner portion 220 of the battery cell 200 and the horizontal plane, and the contact points are located at the upper half of the arc-shaped corner portion 220. In this embodiment, the arc-shaped portion 133 of the left pusher 130 abuts against the upper left corner of the arc-shaped corner portion 220 of the battery cell 200, and the arc-shaped portion 133 of the right pusher 130 abuts against the upper right corner of the arc-shaped corner portion 220 of the battery cell 200.
[0060] According to the displacement amount and the displacement direction of the tab 210 measured by the laser sensor on the winding needle of the winding machine, the moving direction of the pusher 130, such as moving left or moving right, is controlled, and the moving amount of the pusher 130 is controlled, and at the same time, the rotating direction and the rotating amount of the first pressing wheel 111 and the second pressing wheel 113 are controlled.
[0061] Optionally, as shown in FIG. 6, the pusher 130 is provided with a plurality of arc-shaped portions 133, and the arc-shaped portions 133 are arranged in the same direction as the arc-shaped corner portion 220 of the battery cell 200. Figure 2If the tab 210 of the battery cell 200 is offset to the right, the pushing member 130 needs to move to the left. The third motor 153 controls the positions of the left and right pushing members 130 pressing against the arc-shaped corner portion 220 of the battery cell 200, and the first and second pressing wheels 111 and 113 are controlled to rotate, at this time, the first pressing wheel 111 located at the upper side rotates clockwise, and the second pressing wheel 113 located at the lower side rotates counterclockwise. While the first and second pressing wheels 111 and 113 rotate relative to each other, the left and right pushing members 130 are driven by the third motor 153 to move to the left side, so that the upper half and the lower half of the battery cell 200 are relatively moved, and the position of the arc-shaped corner portion 220 of the battery cell 200 is changed, so as to adjust the position of the tab 210 and improve the alignment rate of the tab 210. It should be noted that the left and right pushing members 130 move to the left or to the right by a distance, and the first and second pressing wheels 111 and 113 also synchronously rotate to the left or to the right by a distance. The first and second pressing wheels 111 and 113 and the two pushing members 130 jointly act to change the position of the arc-shaped corner portion 220 of the battery cell 200, so as to achieve the purpose of correcting the tab 210 offset.
[0062] The winding equipment can timely correct the position of the tab 210 after finding that the tab 210 is offset during the winding process, so as to reduce the risk of tab 210 offset. In addition, the winding equipment can reduce the phenomenon of wrinkling of the arc-shaped corner portion 220 of the battery cell 200, reduce the risk of diaphragm core extraction, improve the production yield of the battery cell 200, reduce product scrapping, save costs, and improve production efficiency.
[0063] In summary, the tab offset correction device 100 and the winding equipment provided by the embodiments of the present application have the following beneficial effects, including:
[0064] The first moving assembly 120 can drive the first compression wheel 111 and / or the second compression wheel 113 to move, so that the gap between the first compression wheel 111 and the second compression wheel 113 is adjusted, and the electric core 200 is conveniently held. In the case of holding the electric core 200, the blanking clamping jaw is separated, so that the problems such as wrinkling of the arc corner part 220 of the electric core 200 and preventing the diaphragm from being drawn out are prevented. The rotating assembly can drive the first compression wheel 111 and the second compression wheel 113 to rotate. The second moving assembly 140 is connected with the pushing piece 130, and the pushing piece 130 is used for pressing the arc corner part 220 of the electric core 200. The pushing piece 130 is horizontally moved according to the dislocation direction and the dislocation amount of the tab 210, and meanwhile, the first compression wheel 111 and the second compression wheel 113 are synchronously rotated, so that the position of the arc corner part 220 of the electric core 200 is changed, the position of the tab 210 is corrected, and the dislocation tab 210 is corrected. The device is simple in operation, reliable in correction, can effectively adjust the position of the dislocation tab 210, improve the alignment rate of the tab 210, and improve the quality of the electric core 200.
[0065] The winding equipment provided by the embodiment of the utility model, the position of the tab 210 can be corrected in time after the tab 210 is dislocated, and the risk of dislocation of the tab 210 is reduced. The production yield of the electric core 200 is improved, the product is reduced, the cost is saved, and the production efficiency is improved.
[0066] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.
Claims
1. A tab misalignment correction device, characterized by, The application relates to a battery cell positioning device, which comprises: a first pressing wheel (111); a second pressing wheel (113), a gap being formed between the first pressing wheel (111) and the second pressing wheel (113) for placing a battery cell (200) with misaligned tabs (210); a first moving assembly (120), the first pressing wheel (111) and / or the second pressing wheel (113) being connected with the first moving assembly (120) to adjust the gap between the first pressing wheel (111) and the second pressing wheel (113); a rotating assembly, the rotating assembly being connected with the first pressing wheel (111) and the second pressing wheel (113) respectively to drive the first pressing wheel (111) and the second pressing wheel (113) to rotate; a pushing piece (130); a second moving assembly (140), the second moving assembly (140) being connected with the pushing piece (130), and the pushing piece (130) being used for pressing against an arc-shaped corner portion (220) of the battery cell (200).
2. The tab misalignment correction apparatus according to claim 1, characterized by, The pushing piece (130) comprises a mounting portion (131) and a circular arc portion (133) connected with each other, the mounting portion (131) is connected with the second moving assembly (140), and the circular arc portion (133) is used for pressing against the arc-shaped corner portion (220) of the battery cell (200).
3. The tab misalignment correction apparatus according to claim 1, characterized by, The first moving assembly (120) comprises a first vertical column (121) and a first lifting unit (123) arranged on the first vertical column (121), and the first lifting unit (123) is used for driving the first pressing wheel (111) and / or the second pressing wheel (113) to move along a first direction.
4. The tab misalignment correction apparatus according to claim 3, characterized by The first pressing wheel (111) is arranged on a first pressing plate (125), and the first pressing plate (125) is connected with the first lifting unit (123).
5. The tab misalignment correction apparatus according to claim 4, characterized by A second pressing plate (127) is arranged opposite to the first pressing plate (125) along the first direction, a through hole (128) is arranged on the second pressing plate (127), the second pressing wheel (113) is arranged on a side of the second pressing plate (127) away from the first pressing plate (125), and part of the second pressing wheel (113) is exposed from the through hole (128) and protrudes from a surface of the second pressing plate (127) towards the first pressing plate (125).
6. The tab misalignment correction apparatus according to claim 3, wherein The first pressing wheel (111) comprises two first pressing wheels (111), the second pressing wheel (113) comprises two second pressing wheels (113), the two first pressing wheels (111) are arranged opposite to each other along a second direction, the two second pressing wheels (113) are arranged opposite to each other along the second direction, and the first pressing wheel (111) and the second pressing wheel (113) are respectively used for pressing against two flat surfaces (230) of the battery cell (200) and close to the arc-shaped corner portion (220). The pushing piece (130) comprises two pushing pieces (130), the two pushing pieces (130) are arranged opposite to each other along the second direction and are respectively used for pressing against two arc-shaped corner portions (220) of the battery cell (200), and the first direction and the second direction are arranged at an angle.
7. The tab misalignment correction apparatus according to claim 6, wherein The second moving assembly (140) comprises a second column (141), a second lifting unit (142) and a transverse moving unit (143) extending in a second direction; the second column (141) is connected with the transverse moving unit (143), and the second lifting unit (142) is arranged on the second column (141); the second lifting unit (142) is connected with the pushing piece (130).
8. The tab misalignment correction apparatus according to claim 7, wherein The second column (141) comprises two second columns (141) which are slidingly connected on the same transverse moving unit (143), and each of the two second columns (141) is provided with the second lifting unit (142), and each second lifting unit (142) is connected with the pushing piece (130); the two pushing pieces (130) are used for corresponding pressing on two arc-shaped corner portions (220) of the battery cell (200).
9. The tab misalignment correction apparatus according to any one of claims 1 to 8, characterized by, The rotating assembly comprises a first driving piece (114) and a second driving piece (115), the first driving piece (114) is connected with the first pressing wheel (111), and the second driving piece (115) is connected with the second pressing wheel (113).
10. A winding apparatus characterized by comprising: The tab misalignment correction device of any one of claims 1 to 9 is included.