Battery tab flattening device

Abstract

The utility model discloses a battery tab flattening device which comprises a detection mechanism and a flattening mechanism which are arranged on a roller press, and the detection mechanism is in communication connection with the flattening mechanism. The detection mechanism comprises a hoisting support and an identification assembly hoisted on the hoisting support, and the identification assembly is used for identifying wrinkles of a tab area of a battery pole piece; the flattening mechanism comprises a flattening gasket and a driving assembly used for driving the flattening gasket to move, and the flattening gasket is used for stretching into the lower part of the battery pole piece so as to underlay and flatten the pole lug area. According to the utility model, the tab area of the battery pole piece can be efficiently flattened in a targeted manner by using the device which is simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of battery tab repair equipment, in particular to a battery tab flattening device. Background Art

[0002] Lithium-ion batteries have high requirements for equipment and processes in production. The pole pieces of lithium-ion batteries need to be transported to the roller press after coating. The pressure of the double rollers will thin the pole pieces to the required thickness, thereby achieving the purpose of enhancing the peel strength and reducing the ion transmission distance. Since the elongation rate of the battery pole piece coating area and the pole ear area (plain foil area) during the rolling process is different, the pole piece may have obvious wrinkles on the pole ear part after rolling, which makes it very easy for the pole piece to break in the subsequent process, seriously affecting the production efficiency and yield rate of lithium-ion battery cells.

[0003] The commonly used method for flattening the tab in the prior art is to apply tension to the entire tab area, so that the elongation rate of the empty foil area is artificially stretched to the same or close to that of the diaphragm area. However, this method has the following shortcomings:

[0004] 1. Since it is necessary to apply a tensile force to the entire tab area for a certain period of time to reduce the rebound of the foil, the flattening efficiency is low;

[0005] 2. During the stretching process, if there are defects on the edge of the foil, it is easy to cause the entire electrode to break;

[0006] 3. The precision of the relevant devices is complex and the manufacturing cost is high.

[0007] In view of this, it is necessary to provide a battery tab flattening device that is efficient, stable and low-cost. Utility Model Content

[0008] The purpose of the utility model is to overcome the shortcomings of the prior art in that the tab flattening method has low efficiency, is easy to damage the pole piece due to stretching, and has high equipment cost, and to provide a battery tab flattening device, which detects wrinkles on the tab area on the battery pole piece by setting a detection mechanism, and then transmits a signal to a flattening mechanism that is communicatively connected to the detection mechanism, so that the flattening mechanism performs targeted flattening on the corresponding tab area on the battery pole piece. The device has a simple structure and low overall cost, and can also achieve efficient targeted flattening. Flattening is performed after detection, which can reduce the probability of damage to the tab area after flattening.

[0009] The technical solution of the utility model provides a battery tab flattening device, comprising a detection mechanism and a flattening mechanism arranged on a roller press, wherein the detection mechanism is communicatively connected with the flattening mechanism;

[0010] The detection mechanism includes a hanging bracket and an identification component hung on the hanging bracket, and the identification component is used to identify wrinkles in the tab area of ​​the battery pole piece;

[0011] The flattening mechanism comprises a flattening gasket and a driving assembly for driving the flattening gasket to move, and the flattening gasket is used to extend under the battery pole piece to cushion and flatten the pole ear area.

[0012] In one of the optional technical solutions, the driving assembly includes a guide rail and a driving element connected to an end of the guide rail, and the flattening gasket is movably connected to the guide rail.

[0013] In one of the optional technical solutions, the flattening gasket includes a connecting end and a flattening end, and the connecting end is movably sleeved on the guide rail to drive the flattening end to move along the guide rail.

[0014] In one of the optional technical solutions, the upper surface of the flattened end is an arc-shaped surface that arches upward.

[0015] In one of the optional technical solutions, the guide rail includes a screw shaft, the connecting end includes a screw nut sleeved on the screw shaft, and the driving element includes a stepper motor connected to the end of the screw shaft.

[0016] In one of the optional technical solutions, a coupling is provided between the driving element and the guide rail, one end of the coupling is connected to the guide rail, and the other end is connected to the driving element.

[0017] In one of the optional technical solutions, the identification component includes an image acquisition element, and the image acquisition element is located above the tab area of ​​the battery pole piece.

[0018] In one of the optional technical solutions, the identification component also includes a distance sensor, one side of the distance sensor is connected to the hanging bracket, and the other opposite side of the distance sensor is connected to the image acquisition element.

[0019] In one of the optional technical solutions, the lifting bracket includes a bracket column and a bracket beam, one end of the bracket beam is connected to the upper end of the bracket column, and the identification component is movably connected to the bracket beam.

[0020] In one of the optional technical solutions, a slide groove is provided on the support crossbeam, and the distance sensor includes a sliding block sleeved on the slide groove, and the distance sensor can drive the image acquisition element to move along the slide groove.

[0021] The above technical solution has the following beneficial effects:

[0022] The utility model provides a battery tab flattening device, which includes a detection mechanism and a flattening mechanism. The detection mechanism detects whether there are wrinkles in the tab area of ​​the battery pole piece, and then transmits a signal to the flattening mechanism which is communicatively connected with the detection mechanism when wrinkles in the tab area are detected, so that the flattening mechanism performs a flattening action on the wrinkled tab area on the battery pole piece.

[0023] Since the battery tab flattening device provided by the utility model only includes a detection mechanism and a flattening mechanism, the overall structure of the device is relatively simple, resulting in a low manufacturing cost. In addition, due to the use of a detection mechanism, it is not necessary to continuously maintain tension on the entire tab area, and the wrinkled tab area can be flattened, thereby achieving high efficiency in tab flattening, and the targeted flattening of the tab area does not basically affect the normal production of the battery pole piece. In addition, after being detected by the detection mechanism, targeted flattening is performed, which can significantly reduce the probability of damage to the tab area after flattening, thereby improving the yield rate of the battery pole piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0025] Figure 1 A three-dimensional diagram of a battery tab flattening device provided in one embodiment of the utility model;

[0026] Figure 2 An exploded view of a battery tab flattening device provided in one embodiment of the utility model

[0027] Figure 3 A side view of a battery tab flattening device provided in one embodiment of the utility model;

[0028] Figure 4 A top view of a battery tab flattening device provided in one embodiment of the utility model.

[0029] Reference numerals in the figures:

[0030] 1. Detection mechanism; 11. Lifting bracket; 111. Bracket column; 112. Bracket crossbeam; 1121. Slide; 12. Identification component; 121. Image acquisition component; 122. Distance sensor; 1221. Slider;

[0031] 2. Flattening mechanism; 21. Flattening gasket; 211. Connecting end; 212. Flattening end; 22. Driving assembly; 221. Guide rail; 222. Driving element; 223. Coupling. DETAILED DESCRIPTION

[0032] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0033] In the production process of lithium-ion batteries, the battery pole pieces that make up the battery cells in lithium-ion batteries may be wrinkled after being flattened by a roller press. There are several types of wrinkles on the battery pole pieces, including wavy edges of the pole ears, wrinkles on the pole ears, wrinkles in the coating area, etc., and the severity of these wrinkles varies. Wrinkles in the coating area of ​​the pole piece will cause the surface of the bare battery cell to be uneven, and stress concentration may cause damage to the diaphragm, causing micro-short circuits or short circuits in the battery cells. Wrinkles in the pole ear area will affect the welding strength of the pole ear, resulting in poor welding or increasing the negative charge of the lithium-ion battery. The lithium-ion battery will heat up quickly during charging and discharging, and the cycle life will decay faster. Pole ear wrinkles may also cause diaphragm puncture, causing a short circuit. Active substances are more likely to fall off at the wrinkled edge of the pole piece, and exposed foil is a more serious quality problem for the pole piece.

[0034] The purpose of the utility model is to provide a battery tab flattening device for the situation where wrinkles appear in the tab area on the battery pole piece, so as to flatten the wrinkles in the tab area in a targeted manner, so as to avoid the influence of the welding strength of the tab due to the wrinkles in the tab area, thereby avoiding the heat generation and life attenuation of the lithium-ion battery due to the low welding strength.

[0035] like Figure 1-4 As shown, a battery tab flattening device provided by an embodiment of the utility model comprises a detection mechanism 1 and a flattening mechanism 2 arranged on a roller press, wherein the detection mechanism 1 is in communication connection with the flattening mechanism 2. The detection mechanism 1 comprises a hanging bracket 11 and an identification component 12 hung on the hanging bracket 11, wherein the identification component 12 is used to identify wrinkles in the tab area of ​​the battery tab. The flattening mechanism 2 comprises a flattening pad 21 and a driving component 22 for driving the flattening pad 21 to move, wherein the flattening pad 21 is used to extend under the battery tab to pad and flatten the tab area.

[0036] like Figure 1 and Figure 2As shown, the battery tab flattening device provided by the technical solution of the utility model is mainly used for the tab flattening process of the pole piece of the lithium-ion battery after the pole piece passes through the roller. The roller on the roller press flattens the pole piece including the coating area and the tab area to a preset thickness. Therefore, the battery pole piece on the roller press is continuously advanced at a certain rate, and the positions of the detection mechanism 1 and the flattening mechanism 2 are fixed relative to the roller press. The roller on the roller press is divided into the input end and the output end of the roller press according to the entry and output of the pole piece. The battery tab flattening device is installed on the output end of the roller press, specifically on both sides of the output end of the roller press. The communication-connected detection mechanism 1 and the flattening mechanism 2 are arranged on the same side of the roller press. Preferably, in order to respectively detect and flatten the tab areas on both sides of the battery pole piece, the detection mechanism 1 and the flattening mechanism 2 can be respectively arranged on both sides of the roller press. Although the technical solution of the utility model is mainly used for flattening the tab area of ​​lithium-ion battery pole pieces after rolling, other types of battery pole pieces that need to be rolled, or membrane products that need to be wrinkled and flattened on the transportation line are also suitable for the battery tab flattening device provided by the utility model, which will not be repeated here.

[0037] The detection mechanism 1 at least needs to be provided with a component capable of detecting the surface flatness of the tab area on the pole piece, such as a camera component that collects images of the tab area at intervals, a camera component that continuously obtains videos of the tab area, a component that detects the tab area by sound wave reflection, etc., so as to identify whether there are wrinkles on the surface of the tab area that is constantly moving forward. Other detection components that can perform real-time detection of the surface flatness of the tab area can also be used, which will not be described in detail here.

[0038] The flattening mechanism 2 needs to be able to move to the lug area in a controllable manner in accordance with the results of the detection structure detection, and flatten the wrinkles on the lug area in a targeted manner, rather than performing unnecessary flattening operations on the lug area throughout the entire process. To this end, the flattening mechanism 2 needs to at least include a flattening gasket 21 for supporting the lower surface of the lug area to provide tension for flattening the lug area, and a driving assembly 22 for driving the flattening gasket 21 to move. The flattening gasket 21 needs to be easily embedded under the battery pole piece, and needs to have a certain thickness or a structure with an upwardly arched upper surface, so that the flattening gasket 21 can be easily extended and smoothly embedded in the lower surface of the battery lug, and smoothly pad the lug area of ​​the battery lug from bottom to top. The driving component 22 can be manually started by the operator based on the detection result of the detection mechanism 1, or it can be automatically started based on the electrical signal emitted after the detection mechanism 1 detects the wrinkles in the ear area. The main function of the driving component 22 is to adjust the position of the flattening gasket 21. Therefore, the driving mechanism generally includes a driving element 222 and a guide rail 221. The guide rail 221 can also be other guide transmission structures suitable for driving the flattening gasket 21, such as a ball screw mechanism, a slide groove 1121 slider 1221 mechanism, a cylinder telescopic mechanism, a gear rack mechanism, etc., or other telescopic structures or guide structures that drive the flattening gasket 21 to move, which will not be repeated here.

[0039] The detection mechanism 1 and the flattening mechanism 2 are connected in communication, or the detection mechanism 1 and the flattening mechanism 2 are connected in communication to an external industrial computer, a mobile phone or other control terminal. The technical solution of the utility model is mainly that the detection mechanism 1 hoisted on the hoisting bracket 11 continuously detects the tab area of ​​the battery pole piece. When wrinkles appear in the tab area, the flattening mechanism 2 receives the corresponding electrical signal, and the driving mechanism is started to drive the flattening gasket 21 to extend to the working position below the tab area. The flattening gasket 21 pads the tab area from the bottom to the top, and provides additional upward tension for the tab area of ​​the battery pole piece that is subjected to tension at both ends and moves forward all the time. With the help of this tension and the tension at both ends, the wrinkles in the tab area are flattened. When there are no wrinkles in the tab area, the driving mechanism retracts the flattening gasket 21 to the ready position that is not in contact with the battery pole piece.

[0040] From the above, it can be seen that the purpose of the technical solution of the utility model is to provide a battery tab flattening device, which includes a detection mechanism 1 and a flattening mechanism 2. The detection mechanism 1 detects whether there are wrinkles in the tab area of ​​the battery pole piece, and then when the wrinkles in the tab area are detected, the signal is transmitted to the flattening mechanism 2 which is communicatively connected with the detection mechanism 1, so that the flattening mechanism 2 performs a flattening action on the wrinkled tab area on the battery pole piece.

[0041] Since the core mechanisms of the battery tab flattening device provided by the technical solution to maintain the basic functions are only the detection mechanism 1 and the flattening mechanism 2, the overall structure of the device is relatively simple, resulting in a low manufacturing cost. In addition, due to the use of the detection mechanism 1, there is no need to continuously maintain tension on the entire tab area, and the wrinkled tab area can be flattened, thereby achieving high efficiency in tab flattening, and the targeted flattening of the tab area basically does not affect the normal production of battery poles. In addition, targeted flattening after detection by the detection mechanism 1 can significantly reduce the probability of damage to the tab area after flattening, thereby improving the yield rate of battery poles.

[0042] In one embodiment, Figure 1 and Figure 2 As shown, the driving assembly 22 includes a guide rail 221 and a driving element 222 connected to the end of the guide rail 221 , and the flattening gasket 21 is movably connected to the guide rail 221 .

[0043] In this embodiment, the driving element 222 drives the flattening gasket 21 on the guide rail 221, or the driving element 222 rotates the guide rail 221 to control the movement of the flattening gasket 21. By controlling the working state of the driving element 222, the flattening gasket 21 can be effectively controlled to move a corresponding distance along the guide rail 221 to accurately reach the lower surface where the wrinkles appear in the pole ear area, so that the flattening gasket 21 can achieve precise and controllable targeted flattening operation on the wrinkles in the pole ear area. The driving component 22 can also be a telescopic component such as a cylinder, and the guide rail 221 is connected to the end of the guide rod of the telescopic component, and the flattening gasket 21 is driven by the telescopic guide rod of the telescopic component to achieve controllable telescopic movement.

[0044] In one embodiment, Figure 4 As shown, the flattening gasket 21 includes a connecting end 211 and a flattening end 212 , and the connecting end 211 is movably sleeved on the guide rail 221 to drive the flattening end 212 to move along the guide rail 221 .

[0045] In this embodiment, the flattening gasket 21 has at least a connecting end 211 for movably connecting to the guide rail 221, and a flattening end 212 for padding the tab area from bottom to top so as to cooperate with the pulling force at both ends of the tab area to flatten the tab area. The connecting end 211 can be movably sleeved on the outer periphery of the guide rail 221, and can move along the guide rail 221, and drive the flattening end 212 to move along the track, thereby realizing a precise flattening operation for the tab area.

[0046] In one embodiment, Figure 1 and Figure 2 As shown, the upper surface of the flattened end 212 is an arc-shaped surface that arches upward.

[0047] In this embodiment, the upper surface of the flattened end 212 needs to directly contact the lower surface of the tab area to pad the lower surface of the tab area. Since both ends of the battery pole piece on the roller press are affected by the tension and move forward at a uniform speed, the flattened end 212 pads the lower surface of the tab area to apply an upward force to the tab area. At this time, the tension received at both ends of the tab area is significantly increased. In order to cope with the tension at both ends, the surface area of ​​the tab area also needs to be increased. At this time, the wrinkles in the tab area will be flattened first. In order to gently and effectively flatten the tab area, it is also necessary to avoid the upper surface of the flattened end 212 from tearing the tab area. The upper surface of the flattened end 212 is preferably an arc-shaped surface that arches upward, and the horizontal height of the arc-shaped surface gradually increases from the side to the middle, so that the flattened end 212 can be gently embedded in the lower surface of the tab area and gradually pad the lower surface of the tab area upward. Of course, the upper surface of the flattened end 212 can also be a bending surface structure or other curved surface structure suitable for gently padding the tab area, which will not be repeated here.

[0048] In one embodiment, Figure 1 and Figure 2 As shown, the guide rail 221 includes a screw shaft, the connecting end 211 includes a screw nut sleeved on the screw shaft, and the driving element 222 includes a stepping motor connected to the end of the screw shaft.

[0049] In this embodiment, the driving element 222 includes a stepper motor connected to the guide rail 221, and the connection structure between the guide rail 221 and the flattening gasket 21 is preferably a ball screw transmission mechanism, so as to achieve high-precision and smooth movement of the flattening gasket 21. Specifically, the guide rail 221 includes a screw shaft, and the connecting end 211 includes a screw nut sleeved on the screw shaft. Further preferably, the screw used is a high-precision screw, and the transmission accuracy of the high-precision screw is higher, which can adapt to the precise flattening operation of the pole ear area. The rotary motion of the stepper motor is converted into linear motion through the ball screw transmission mechanism, thereby driving the flattening gasket 21 to move along the guide rail 221, thereby achieving targeted flattening of the wrinkled pole ear area. The transmission structure between the driving element 222, the guide rail 221 and the flattening gasket 21 can also adopt a cylinder transmission mechanism, a rack and pinion transmission mechanism, a screw and nut transmission mechanism, etc., which can control the movement of the flattening gasket 21 along the guide rail 221. At this time, according to the different transmission mechanisms, it is necessary to select a suitable driving element 222.

[0050] In one embodiment, Figure 3 As shown, a coupling 223 is provided between the driving element 222 and the guide rail 221 , one end of the coupling 223 is connected to the guide rail 221 , and the other end is connected to the driving element 222 .

[0051] In this embodiment, the driving shaft and the driven shaft in different mechanisms are firmly connected by setting a coupling 223. Therefore, one end of the coupling 223 is connected to the end of the guide rail 221, and the other end of the coupling 223 is connected to the output end of the driving element 222. The function of the coupling 223 is specifically to connect the rotating shaft of the driving element 222 and the guide rail 221 to achieve rotation together, and absorb the axial deviation between the driving element 222 and the guide rail 221 to reduce the difficulty of adjustment, so that the movement and torque of the driving element 222 can be reliably transmitted to the guide rail 221, thereby the electric flattening gasket 21 moves.

[0052] In one embodiment, Figure 1 and Figure 2 As shown, the identification component 12 includes an image acquisition element 121, and the image acquisition element 121 is located above the tab area of ​​the battery electrode.

[0053] In this embodiment, the acquisition end of the image acquisition element 121 faces the upper surface of the tab region, and the image acquisition unit continuously acquires the image of the upper surface of the tab region, and detects the wrinkle condition of the tab region currently passing under the image acquisition unit based on the image of the upper surface of the tab region. The acquisition end of the image acquisition unit can be a camera lens, which acquires the image of the tab region by continuously recording or taking pictures at intervals, and after performing relevant analysis on the image, it is known whether there are wrinkles in the tab region.

[0054] In one embodiment, Figure 1 and Figure 2 As shown, the identification component 12 further includes a distance sensor 122, which is disposed between the image acquisition element 121 and the hanging bracket 11. One side of the distance sensor 122 is connected to the hanging bracket 11, and the other opposite side of the distance sensor 122 is connected to the image acquisition element 121.

[0055] In this embodiment, the distance sensor 122 is used to determine the position of the tab area on the battery pole piece, specifically, to measure the distance between the tab area and the flattening gasket 21 before it is extended, so that the flattening gasket 21 can be accurately extended to the position below the tab area, and the distance sensor 122 assists the flattening gasket 21 to accurately flatten the tab area with wrinkles. The distance sensor 122 can also move the corresponding distance according to the specific position where the wrinkles appear in the tab area, accurately place the flattening gasket 21 at the wrinkles in the tab area, and achieve precise targeted flattening.

[0056] In one embodiment, Figure 1 and Figure 2 As shown, the hanging bracket 11 includes a bracket column 111 and a bracket beam 112 , one end of the bracket beam 112 is connected to the upper end of the bracket column 111 , and the identification component 12 is movably connected to the bracket beam 112 .

[0057] In this embodiment, the widths of different battery pole pieces and the positions of the tab areas are all different, and the mounting position of the hanging bracket 11 is generally no longer changed after installation. In order to adapt to the tab areas of different positions on different types of battery pole pieces, the identification component 12 hung on the hanging bracket 11 should be able to move relative to the hanging bracket 11, that is, the identification component 12 is movably connected to the hanging bracket 11, so as to adjust the position to accurately collect image information on the upper surface of the tab area.

[0058] In one embodiment, Figure 1 and Figure 2 As shown, a slide groove 1121 is provided on the support beam 112 , and the distance sensor 122 includes a slider 1221 sleeved on the slide groove 1121 . The distance sensor 122 can drive the image acquisition element 121 to move along the slide groove 1121 .

[0059] In this embodiment, the identification component 12 is connected to the lifting bracket 11 through a movable connection structure of a slide groove 1121 and a slider 1221. Specifically, a slide groove 1121 with a middle portion protruding outward is provided on the side of the bracket beam 112, and a slider 1221 is provided on the side of the distance sensor 122. The slider 1221 is sleeved on the slide groove 1121 of the bracket beam 112, so that the image acquisition element 121 fixedly connected to the distance sensor 122 can be movably connected relative to the bracket beam 112, so that the image acquisition element 121 can be adjusted in position according to the pole ear areas at different positions.

[0060] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0061] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A battery tab flattening device, characterized in that: It comprises a detection mechanism (1) and a flattening mechanism (2) arranged on a roller press, wherein the detection mechanism (1) is communicatively connected with the flattening mechanism (2); The detection mechanism (1) comprises a hanging bracket (11) and an identification component (12) hung on the hanging bracket (11), wherein the identification component (12) is used to identify wrinkles in the tab area of ​​the battery pole piece; The flattening mechanism (2) comprises a flattening gasket (21) and a driving assembly (22) for driving the flattening gasket (21) to move, and the flattening gasket (21) is used to extend under the battery pole piece to cushion and flatten the pole ear area.

2. The battery tab flattening device according to claim 1, characterized in that: The driving assembly (22) comprises a guide rail (221) and a driving element (222) connected to the end of the guide rail (221), and the flattening gasket (21) is movably connected to the guide rail (221).

3. The battery tab flattening device according to claim 2, characterized in that: The flattening gasket (21) comprises a connecting end (211) and a flattening end (212); the connecting end (211) is movably sleeved on the guide rail (221) to drive the flattening end (212) to move along the guide rail (221).

4. The battery tab flattening device according to claim 3, characterized in that: The upper surface of the flattened end (212) is an arc-shaped surface that arches upward.

5. The battery tab flattening device according to claim 4, characterized in that: The guide rail (221) comprises a lead screw shaft, the connecting end (211) comprises a lead screw nut sleeved on the lead screw shaft, and the driving element (222) comprises a stepping motor connected to the end of the lead screw shaft.

6. The battery tab flattening device according to claim 5, characterized in that: A coupling (223) is provided between the driving element (222) and the guide rail (221); one end of the coupling (223) is connected to the guide rail (221), and the other end is connected to the driving element (222).

7. The battery tab flattening device according to claim 1, characterized in that: The identification component (12) comprises an image acquisition element (121), and the image acquisition element (121) is located above the tab area of ​​the battery pole piece.

8. The battery tab flattening device according to claim 7, characterized in that: The identification component (12) further comprises a distance sensor (122), one side of the distance sensor (122) being connected to the hanging bracket (11), and the other opposite side of the distance sensor (122) being connected to the image acquisition element (121).

9. The battery tab flattening device according to claim 8, characterized in that: The hanging bracket (11) comprises a bracket column (111) and a bracket crossbeam (112), one end of the bracket crossbeam (112) is connected to the upper end of the bracket column (111), and the identification component (12) is movably connected to the bracket crossbeam (112).

10. The battery tab flattening device according to claim 9, characterized in that: The support crossbeam (112) is provided with a slide groove (1121), the distance sensor (122) comprises a slider (1221) sleeved on the slide groove (1121), and the distance sensor (122) can drive the image acquisition element (121) to move along the slide groove (1121).

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