Full tab battery, electrical device and tab pre-treatment device

Abstract

The application provides a full-tab battery, an electric device and a tab pretreatment device, and relates to the technical field of batteries. The full-tab battery comprises a full-tab roll core and a current collector disc, the full-tab roll core has a winding axis and tabs, the tabs comprise positive tabs and negative tabs; the positive tabs and / or the negative tabs are arranged to be inclined towards the winding axis of the full-tab roll core; one end of the full-tab roll core, where the tabs arranged to be inclined towards the winding axis of the full-tab roll core are located, is provided with the current collector disc, the current collector disc has a current collector disc axis and a plurality of welding grooves, the plurality of welding grooves are located at one end of the current collector disc away from the full-tab roll core, the plurality of welding grooves are arranged to be spaced apart along the circumference of the current collector disc axis, the welding grooves are arranged to extend in a preset direction, and the bottom of the welding groove is welded with the corresponding tab. The full-tab battery provided by the application can relieve the poor welding condition of the tabs and the current collector or the steel shell when welding, can increase the welding area between the tabs and the current collector disc, and can reduce the internal resistance of the battery.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a full-tab battery, an electric device and a tab pretreatment device. BACKGROUND

[0002] Generally, lithium ion and sodium ion full-tab batteries can be divided into tight full-tab and channel full-tab, and the batteries of the two tab types need to be welded with current collectors or steel shells during production and assembly. However, due to the extension or winding error of the tab after rolling, the end alignment of the full-tab is poor, which may cause poor welding of the tab and the current collector or the steel shell. SUMMARY

[0003] Therefore, the present application aims to overcome the deficiencies in the prior art, and provides a full-tab battery, an electric device and a tab pretreatment device, which can alleviate the poor welding of the tab and the current collector or the steel shell, and can increase the welding area between the tab and the current collector and reduce the internal resistance of the battery.

[0004] The present application provides the following technical solutions:

[0005] In a first aspect, the present application provides a full-tab battery, which comprises:

[0006] a full-tab roll core, the full-tab roll core having a winding axis and a tab, the tab comprising a positive tab and a negative tab; wherein the positive tab and / or the negative tab is arranged to be inclined towards the winding axis of the full-tab roll core;

[0007] a current collector, one end of the tab arranged to be inclined towards the winding axis of the full-tab roll core is provided with the current collector, the current collector has a current collector axis and a plurality of welding grooves, the plurality of welding grooves are located at one end of the current collector away from the full-tab roll core, the plurality of welding grooves are arranged to be spaced apart along the circumferential direction of the current collector axis, the welding grooves are arranged to extend in a preset direction, the bottom of the welding groove and the corresponding tab are welded; in the preset direction, the height of the bottom of the welding groove protruding from one end of the current collector close to the full-tab roll core gradually increases, and the preset direction is away from the current collector axis.

[0008] In some embodiments of the first aspect, the plurality of welding grooves have the same groove bottom thickness.

[0009] In some embodiments of the first aspect, the current collector is provided with a plurality of through holes, the through holes are arranged to extend in the direction away from or close to the full-tab roll core.

[0010] In a second aspect, the present application also provides a use of the full tab cell in an electrical equipment.

[0011] In a third aspect, the present application also provides a tab pre-processing device, comprising a tab flattening assembly, the tab flattening assembly comprising a plurality of scrapers and a first driving member, the plurality of scrapers being arranged along a circular distribution line with equal intervals between the scrapers, the first driving member being connected with the plurality of scrapers, and the first driving member being capable of driving the plurality of scrapers to move along the radial direction of the circular distribution line, so that the plurality of scrapers can move closer to or further away from each other.

[0012] In some embodiments of the third aspect, the first driving member comprises:

[0013] a driving wheel and a wheel seat, the driving wheel and the wheel seat being rotationally connected, the axis of the driving wheel coinciding with the set axis, the driving wheel having a plurality of guide grooves arranged along the circumferential direction of the driving wheel with equal intervals between the guide grooves; wherein the extension direction of the guide grooves intersects with the radial direction of the driving wheel;

[0014] a plurality of guide columns, the guide columns being arranged in the corresponding guide grooves in a sliding fit;

[0015] a plurality of push-pull rods, the plurality of push-pull rods being arranged one-to-one with the plurality of guide columns, and the plurality of push-pull rods being arranged one-to-one with the plurality of scrapers, the push-pull rods extending along the radial direction of the driving wheel, one end of the push-pull rod being connected with the corresponding guide column, the other end of the push-pull rod being connected with the corresponding scraper, and the push-pull rod being in a sliding connection with the wheel seat, so that the push-pull rod can move along the radial direction of the driving wheel;

[0016] a driving part, the driving part being connected with the driving wheel, and the driving part being used to drive the driving wheel to rotate.

[0017] In some embodiments of the third aspect, the driving part comprises a driving motor and a driving gear, the main shaft of the driving motor being in a transmission connection with the driving gear, the driving wheel being a driven gear, and the driving gear and the driven gear being in engagement.

[0018] In some embodiments of the third aspect, the scrapers extend along the circumferential direction of the driving wheel.

[0019] The included angle between the extension direction of the guide grooves and the radial direction of the driving wheel gradually increases in the direction away from the axis of the driving wheel.

[0020] In some embodiments of the third aspect, the tab pre-processing device further comprises a conveying assembly configured to move the full-tab core along a first preset path, the first preset path having a pre-processing station, an axis of the full-tab core at the pre-processing station coinciding with the preset axis;

[0021] The tab folding assembly further comprises a mounting seat and a second driving member, the mounting seat being connected with the first driving member, and the second driving member being connected with the mounting seat, the second driving member being configured to drive the mounting seat to move along the preset axis, so that the tabs of the full-tab core at the pre-processing station can enter or exit the accommodating groove formed by the plurality of scrapers.

[0022] In some embodiments of the third aspect, the preset axis is vertically arranged, the first preset path is located in a horizontal plane, and the conveying assembly comprises a conveying belt and side plates, a conveying direction of the conveying belt being an extension direction of the first preset path, and the conveying belt being provided with the side plates on both sides thereof, the pair of side plates being configured to prevent the full-tab core from being laterally tilted.

[0023] In some embodiments of the third aspect, the tab pre-processing device further comprises a clamping assembly, the clamping assembly comprising a pair of clamping members and a third driving member, the pair of clamping members being respectively located on both sides of the pre-processing station, the pair of clamping members being oppositely arranged, the pair of clamping members having an opposite direction therebetween, the opposite direction being arranged perpendicularly to the preset axis and intersecting the first preset path, the third driving member being connected with the pair of clamping members, and the third driving member being configured to drive the pair of clamping members to move towards or away from each other along the opposite direction, so as to clamp or release the bottom and / or middle part of the full-tab core.

[0024] In some embodiments of the third aspect, the mounting seat penetrates a limiting hole, the limiting hole being coaxially arranged with the preset axis, wherein the movement of the mounting seat is configured to enable part of the full-tab core to enter or exit the limiting hole, and the full-tab core and the limiting hole are in clearance fit.

[0025] In some embodiments of the third aspect, the clamping assembly further comprises a position sensor and a controller, the position sensor being electrically connected with the controller, the controller being electrically connected with the third driving member and / or the second driving member, the position sensor being configured to detect whether the pre-processing station has the full-tab core, and the controller being configured to receive a signal of the position sensor and control actions of the third driving member and / or the second driving member.

[0026] Embodiments of the present application have the following advantages:

[0027] The present application provides a full tab battery, by setting the positive and / or negative tab towards the winding axis, it can better adapt to the extension or winding error after the rolling of the pole piece, so that the tab is more uniform when welding, reducing the situation of poor welding. This design can significantly improve the success rate and stability of welding. The welding groove on the current collector plate is designed to gradually increase in height away from the axis of the current collector plate, which not only better matches the slanting of the tab, but also increases the actual contact area between the tab and the current collector plate. Larger welding area means stronger mechanical connection and lower contact resistance, thereby improving the electrical conductivity performance and overall reliability of the battery. Due to the increase in welding area and the reduction in contact resistance, the internal resistance of the battery will also decrease accordingly. Lower internal resistance helps to improve the charge and discharge efficiency of the battery, prolong the service life of the battery, and perform better in high-power applications.

[0028] Furthermore, overall, this design can improve the electrochemical performance of the battery, including higher energy density, better cycle stability and longer life. This is particularly important for electric vehicles, energy storage systems and other high-performance applications.

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions 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 therefore 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.

[0031] Figure 1 A perspective view of the structure of a full tab winding core of a full tab battery is shown, which is provided by the embodiments of the present application;

[0032] Figure 2 Another perspective view of the structure of a full tab winding core of a full tab battery is shown, which is provided by the embodiments of the present application;

[0033] Figure 3 A structure diagram of a current collector plate of a full tab battery is shown, which is provided by the embodiments of the present application;

[0034] Figure 4 A perspective view of the structure of a tab pretreatment device is shown, which is provided by the embodiments of the present application;

[0035] Figure 5A perspective view of a structure of a tab folding assembly of a full-tab pretreatment device is shown.

[0036] Figure 6 A perspective view of a structure of a tab folding assembly of a full-tab pretreatment device is shown.

[0037] Figure 7 A perspective view of a structure of a tab folding assembly of a full-tab pretreatment device is shown.

[0038] Figure 8 A perspective view of a structure of a tab folding assembly of a full-tab pretreatment device is shown.

[0039] Figure 9 A perspective view of a structure of a clamping assembly of a full-tab pretreatment device is shown.

[0040] Main element symbol explanation:

[0041] 100-full-tab winding core; 110-tab; 120-winding axis;

[0042] 200-current collecting disc; 210-welding groove; 220-through hole;

[0043] 300-tab folding assembly; 310-second driving member; 320-driving part; 330-mounting seat; 340-driving wheel; 341-guiding groove; 350-driving gear; 360-wheel seat; 370-push-pull rod; 380-guiding column; 390-scraping plate; 331-limiting hole;

[0044] 400-clamping assembly; 410-clamping member; 420-position sensor;

[0045] 500-conveying assembly; 510-side plate; 520-conveying belt. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0047] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it should be noted that when an element is referred to as being "connected", "coupled", or "fixed" to another element, it can be directly connected, coupled, or fixed to the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are for purposes of illustration only and are not intended to limit the scope of the present application.

[0048] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and the like are to be construed broadly and are not limited to the meaning of the terms "fixed" and "connected" in a strict mechanical sense, for example, can be fixed connection, can also be detachable connection, or can be integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically defined.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the template in the specification is only for the purpose of describing the specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0051] In the related art, with the rapid development of the new energy industry, lithium ion batteries and sodium ion batteries are widely used in various industries. Lithium ion batteries and sodium ion batteries are divided into full tab batteries and non-full tab batteries.

[0052] Lithium ion and sodium ion full tab batteries can be divided into tight full tab and channel full tab. The batteries of the two tab types need to be welded with current collectors or steel shells during production and assembly. However, due to the extension or winding error of the tab after rolling, the end alignment of the full tab is poor, which may cause poor welding of the tab and the current collector or the steel shell.

[0053] As shown in FIG. 1, FIG. 2, and Figure 3As shown, in order to solve the above technical problems, the embodiment of the present application provides a full tab battery, the full tab battery comprises a full tab roll core 100 and a current collecting disc 200, the full tab roll core 100 has a winding axis 120 and a tab 110, the tab 110 comprises a positive tab 110 and a negative tab 110; wherein the positive tab 110 and / or the negative tab 110 is arranged to be inclined towards the winding axis 120 of the full tab roll core 100; the end of the full tab roll core 100, where the tab 110 arranged to be inclined towards the winding axis 120 of the full tab roll core 100, is provided with the current collecting disc 200, the current collecting disc 200 has a current collecting disc 200 axis and a plurality of welding grooves 210, the plurality of welding grooves 210 are located at the end of the current collecting disc 200 away from the full tab roll core 100, the plurality of welding grooves 210 are arranged to be spaced along the circumference of the current collecting disc 200 axis, the welding grooves 210 are arranged to extend in a preset direction, and the bottom of the welding groove 210 and the corresponding tab 110 are welded; in the preset direction, the height of the bottom of the welding groove 210 protruding from the end of the current collecting disc 200 close to the full tab roll core 100 gradually increases, and the preset direction is a direction away from the current collecting disc 200 axis.

[0054] In these embodiments, the present application provides an improved full tab battery design and its related components, which mainly solves the problem that the end of the tab 110 is not neat and there are metal scraps leading to short circuit due to the extension or winding error of the pole piece after rolling in the production process of the traditional full tab battery, thereby affecting the welding quality of the tab 110 and the current collector or the steel shell. Obviously, by arranging the positive tab 110 and / or the negative tab 110 to be inclined towards the winding axis 120, and arranging the welding grooves 210 with a specific structure on the current collecting disc 200, this design not only improves the welding quality, but also increases the contact area between the tab 110 and the current collecting disc 200, which helps to reduce the internal resistance of the battery and improve the performance of the battery.

[0055] It should be noted that the full tab roll core 100 comprises a positive pole piece, a separator, a negative pole piece, a positive current collecting disc 200, and a negative current collecting disc 200. The positive pole piece, the separator, and the negative pole piece are wound in a sandwich structure, and the upper and lower sides of the full tab roll core 100 are respectively provided with the positive tab 110 and the negative tab 110. The center of the roll core is a center hole, the negative tab 110 is connected to the steel shell through the negative current collecting disc 200, the steel shell is negatively charged, the positive tab 110 is connected to the positive pole through the positive current collecting disc 200, and the positive pole is positively charged. The positive current collecting disc 200 is welded on the positive tab 110 at the top of the roll core, and the negative current collecting disc 200 is welded on the negative tab 110 at the bottom of the full tab roll core 100.

[0056] Specifically, the key point of this design is that the skew setting of the tab 110, that is, the tab 110 and / or the negative tab 110 is not directly perpendicular to the winding core, but has a certain inclination angle, the tab 110 is inclined to the axis of the full tab winding core 100, which helps to compensate for the position deviation of the tab 110 due to errors in the manufacturing process, improve the contact rate of the tab 110 and the current collector or the steel shell, and ensure better alignment and welding effect.

[0057] In other words, the present application adopts the pretreatment of the tab 110 before welding the current collecting disc 200, and applies a force to the tab 110 along the radial direction of the full tab winding core 100, so that the tab 110 is slightly inclined inward along the radial direction of the full tab winding core 100. When the tab 110 of the full tab winding core 100 is welded to the current collecting disc 200, the welding of the individual collapsed tab 110 can be avoided, and the welding area of the tab 110 and the current collecting disc 200 can be increased, and the internal resistance of the battery can be reduced.

[0058] For the design of the current collecting disc 200, the welding groove 210 on the current collecting disc 200 mainly gradually increases in height along the direction away from the axis of the current collecting disc 200. This design can better adapt to the skew setting of the tab 110, and ensure good welding even when there is a slight position deviation. In addition, such a design can also increase the effective contact area between the tab 110 and the current collecting disc 200, thereby reducing the contact resistance and improving the overall performance of the battery. Simply put, the tab 110 is inclined to the axis of the full tab winding core 100, and by setting the height of the groove bottom of the welding groove 210, that is, the bottom of the welding groove 210 on the current collecting disc 200 gradually decreases in the direction close to the full tab winding core 100, and then the bottom of the tab 110 and the welding groove 210 form an inclined surface, which is beneficial to maintain the inclined state of the tab 110, and can increase the contact area between the current collecting disc 200 and the corresponding tab 110.

[0059] For example, in the present embodiment, the inclination angle of the bottom of the welding groove 210 is the same as the inclination angle of the tab 110. Of course, in other embodiments, the inclination angle of the bottom of the welding groove 210 is smaller than the inclination angle of the tab 110.

[0060] For example, the included angle between the tab 110 and the axis of the full tab winding core 100 is 10°. Of course, in other embodiments, the included angle between the tab 110 and the axis of the full tab winding core 100 is 20°, 30°, 40°, etc. Alternatively, the included angle between the tab 110 and the axis of the full tab winding core 100 is less than 90°.

[0061] Therefore, this innovative design is of great significance for improving the manufacturing quality and performance of all-tab batteries, especially in modern battery applications that pursue higher energy density and longer lifespan. Furthermore, this design has a wide range of applications, suitable for various devices using lithium-ion or sodium-ion batteries, such as electric vehicles and energy storage systems.

[0062] like Figure 2 As shown, in some embodiments, both the positive electrode tab 110 and the negative electrode tab 110 are obliquely positioned toward the winding axis 120 of the full electrode core 100.

[0063] In these embodiments, when both the positive electrode tab 110 and the negative electrode tab 110 are obliquely positioned toward the winding axis 120 of the full-tab core 100, that is, when both the positive electrode tab 110 and the negative electrode tab 110 are obliquely positioned toward the axis of the full-tab core 100, this design can bring the following specific beneficial effects:

[0064] The skewed arrangement of the positive and negative electrode tabs 110 better compensates for the stretching or errors generated during the rolling and winding of the electrode sheets, resulting in neater tabs 110 during welding and higher alignment accuracy. Welding uniformity: Due to the improved neatness of the tabs 110, they can be more evenly distributed in the welding groove 210 during welding, reducing the risk of localized welding defects and improving welding consistency and reliability. The skewed arrangement of the tabs 110 better matches the shape of the welding groove 210 on the current collector 200, allowing welding at more contact points and increasing the welding area. A larger welding area means a stronger mechanical connection, enhancing the bonding force between the tabs 110 and the current collector 200 and reducing connection failures caused by mechanical stress. The increased welding area and more uniform welding distribution can significantly reduce contact resistance and improve current conduction efficiency. Low contact resistance helps reduce heat generation at the welding point, improves the thermal stability of the battery in high-power applications, and extends battery life.

[0065] The tilt angle of the tab 110 and the design of the welding groove 210 can be adjusted according to different battery capacities and application requirements to achieve optimal performance and reliability. In summary, both the positive and negative tabs 110 are tilted towards the winding axis 120 of the full-tab core 100, which can significantly improve the welding quality, mechanical connection strength, and electrochemical performance of the battery, while simplifying the production process, increasing the yield, and providing strong support for the efficient production and widespread application of batteries.

[0066] In some embodiments, the bottom thickness of the multiple welding grooves 210 is the same.

[0067] In these embodiments, it is noted that the welding grooves 210 are formed by the recessed areas of the current collector plate 200, and the groove bottoms of the plurality of welding grooves 210 are of the same thickness. This design can bring the following specific benefits:

[0068] The same thickness of the groove bottoms means that the depths of each welding groove 210 are consistent, which helps to form uniform welds during welding and ensures the consistency of welding quality. Uniform welding depth can reduce defects such as incomplete welding and welding through caused by inconsistent welding depth, and improve the reliability and stability of welding.

[0069] The design of the same thickness of the groove bottoms can simplify the welding process, and the same welding parameters (such as current, time and temperature) can be used to complete the welding of all welding grooves 210, reducing the complexity of process adjustment.

[0070] Standardized welding process can improve production efficiency, shorten production cycle and reduce production cost. Moreover, the same thickness of the groove bottoms of the welding grooves 210 can ensure uniform stress distribution of the welding points, avoid local stress concentration, and improve the mechanical strength of the welding points. Uniform welding points can better withstand mechanical vibration and thermal cycling, improving the durability and reliability of the battery under various working conditions.

[0071] Furthermore, the same thickness of the groove bottoms of the welding grooves 210 can ensure uniform heat distribution during welding, avoid local overheating, and reduce thermal damage in the welding area. Uniform heat distribution helps to improve the thermal stability of the battery and reduce performance degradation and safety hazards caused by local overheating.

[0072] In addition, uniform welding points can reduce contact resistance and improve the efficiency of current conduction, thereby improving the electrochemical performance of the battery.

[0073] As shown in FIG. 1, Figure 3 In some embodiments, the current collector plate 200 is provided with a plurality of through holes 220, which are arranged in a direction away from or close to the full tab roll core 100.

[0074] In these embodiments, the current collector plate 200 is provided with a plurality of through holes 220, which are arranged in a direction away from or close to the full tab roll core 100 to achieve liquid injection.

[0075] Moreover, the through holes 220 can serve as heat conduction paths to help quickly conduct heat generated inside the battery, improving the heat dissipation performance of the battery. This is particularly important in high-power applications, which can prevent the battery from overheating and improve the thermal stability and safety of the battery.

[0076] The through holes 220 help to form a more uniform temperature field, reduce local overheating phenomena, and prolong the service life of the battery. The design of the through holes 220 can reduce the material usage of the current collector 200, thereby reducing the weight of the entire battery. This is particularly important for applications such as portable devices and electric vehicles, which can improve energy efficiency and endurance.

[0077] It should be noted that the number, position, and size of the through holes 220 can be adjusted according to different battery capacities and application requirements to achieve optimal performance and reliability.

[0078] As shown in Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , in some embodiments, the present application also provides a tab 110 pretreatment device, which includes a tab flattening assembly 300. The tab flattening assembly 300 includes a plurality of scrapers 390 and a first driving member. The plurality of scrapers 390 are evenly distributed along a circular distribution line with a certain axial spacing. The first driving member is connected to the plurality of scrapers 390 and can drive the plurality of scrapers 390 to move radially along the circular distribution line, so that the plurality of scrapers 390 can move closer to or away from each other. This design allows the tab 110 to be tilted towards the axis of the full-tab jelly roll 100 by moving the scrapers 390 radially along the circular distribution line.

[0079] In these embodiments, the design of the tab 110 pretreatment device provides an effective solution for ensuring the alignment and correct skew of the tabs 110 during the production of full-tab batteries, thereby improving the welding quality and battery performance.

[0080] By moving the plurality of scrapers 390 radially, the skew angle of the tabs 110 can be precisely controlled to ensure that all tabs 110 are tilted towards the axis of the full-tab jelly roll 100, improving the alignment of the tabs 110. This mechanical control method can reduce errors caused by manual operation and ensure that each tab 110 reaches the desired skew angle.

[0081] That is, the improved alignment of the tabs 110 can significantly improve the alignment accuracy during welding, reduce the risk of poor welding, and improve the success rate and quality of welding. The aligned tabs 110 can be more evenly distributed in the welding groove 210, reducing the risk of local poor welding and ensuring the uniformity and reliability of the welding points.

[0082] The first driving member can automatically control the movement of the plurality of scrapers 390, realize the automatic laying of the tab 110, reduce manual intervention, and improve production efficiency. Through the pretreatment device, a standardized tab 110 processing process can be realized, the complexity of process adjustment is reduced, and the consistency and stability of production are improved.

[0083] Of course, in other embodiments, each scraper 390 is respectively connected with a first driving member, which can also drive the radial movement of the scraper 390 along the circular distribution line. For example, the first driving member is a telescopic rod, such as an electric telescopic rod, a hydraulic cylinder, or an air cylinder, etc.

[0084] It should be noted that the plurality of scrapers 390 are located on the same circular distribution line, and the plurality of scrapers 390 form an accommodation groove therebetween. In the initial state, the plurality of scrapers 390 are away from each other, and at this time, the opening area of the slot of the accommodation groove is larger than the outer diameter of the full-tab roll core 100, so that the full-tab roll core 100 can enter and exit the accommodation groove.

[0085] In the working state, the first driving member drives the radial movement of the plurality of scrapers 390, which in turn can drive the tab 110 located in the accommodation groove to bend and deflect towards the axis of the full-tab roll core 100. After the bending is completed, the first driving member drives the scraper 390 to reset, so that the full-tab roll core 100 can be easily taken out.

[0086] Obviously, in this working process, the full-tab roll core 100 can be taken in and out of the accommodation groove by the mechanical arm, and the full-tab roll core 100 can also be manually taken out for operation.

[0087] For example, Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, in some embodiments, the first driving member includes a driving wheel 340, a wheel seat 360, a plurality of guide columns 380, a plurality of push-pull rods 370, and a driving part 320. The driving wheel 340 and the wheel seat 360 are rotationally connected, the axis of the driving wheel 340 coincides with the setting axis, and the driving wheel 340 has a plurality of guide grooves 341 which are uniformly distributed along the circumference of the driving wheel 340. The extension direction of the guide grooves 341 intersects the radial direction of the driving wheel 340. The guide columns 380 are arranged in the corresponding guide grooves 341 and are in sliding fit with the guide grooves 341. The plurality of push-pull rods 370 and the plurality of guide columns 380 are one-to-one corresponding, the plurality of push-pull rods 370 and the plurality of scrapers 390 are one-to-one corresponding, the push-pull rod 370 extends along the radial direction of the driving wheel 340, one end of the push-pull rod 370 is connected with the corresponding guide column 380, the other end of the push-pull rod 370 is connected with the corresponding scraper 390, and the push-pull rod 370 is in sliding connection with the wheel seat 360, so that the push-pull rod 370 can move along the radial direction of the driving wheel 340. The driving part 320 is connected with the driving wheel 340, and the driving part 320 is used to drive the driving wheel 340 to rotate.

[0088] In these embodiments, the design of such tab 110 pre-processing device realizes the automatic lodging of the tab 110 through precise mechanical structure, and ensures that the tab 110 can be accurately inclined towards the axis of the full-tab core 100.

[0089] The driving wheel 340 and the wheel seat 360 are connected through a bearing or other rotationally connecting mode, so that the driving wheel 340 can freely rotate around its axis. The axis of the driving wheel 340 coincides with the setting axis, so that the rotation of the driving wheel 340 can accurately control the radial movement of the plurality of scrapers 390.

[0090] The driving wheel 340 is provided with a plurality of guide grooves 341 which are uniformly distributed along the circumference of the driving wheel 340, and the extension direction of the guide grooves 341 intersects the radial direction of the driving wheel 340. Each guide column 380 is arranged in the corresponding guide groove 341 and is in sliding fit with the guide groove 341. When the driving wheel 340 rotates, the guide column 380 will slide in the guide groove 341, thereby realizing the radial movement.

[0091] Each push-pull rod 370 is correspondingly arranged with a guide column 380 and a scraper 390, and the push-pull rod 370 extends along the radial direction of the driving wheel 340. One end of the push-pull rod 370 is connected with the corresponding guide column 380, and the other end is connected with the corresponding scraper 390. The push-pull rod 370 is in sliding connection with the wheel seat 360, so that the push-pull rod 370 can freely move along the radial direction of the driving wheel 340. For example, the push-pull rod is in sliding connection with the wheel seat 360 through a sliding rail which extends along the radial direction of the rotating wheel.

[0092] The driving part 320 is connected with the driving wheel 340 and is used to drive the rotation of the driving wheel 340. The driving part 320 can be a motor, a pneumatic cylinder or other driving device, and by precisely controlling the rotation angle of the driving wheel 340, the precise control of the radial movement of the scraper 390 can be realized.

[0093] Obviously, by the rotation of the driving wheel 340, the sliding distance of the guide column 380 in the guide groove 341 can be precisely controlled, so as to precisely control the radial movement distance of the scraper 390, and ensure that the tab 110 can be accurately inclined towards the axis of the full-tab jelly roll 100. The movement distance and direction of all the scrapers 390 are consistent, which ensures that the inclination angles of all the tabs 110 are consistent, and improves the neatness of the tabs 110. Through the control of the driving part 320, the automatic lodging of the tabs 110 can be realized, the manual intervention is reduced, and the production efficiency is improved. The automatic operation can realize continuous production, and improve the automation level and production speed of the production line.

[0094] The tab 110 pretreatment device realizes the automatic lodging of the tabs 110 through precise mechanical structure and automatic control, significantly improves the neatness and welding quality of the tabs 110, simplifies the production process, optimizes the battery performance, and provides strong support for the efficient production and wide application of full-tab batteries.

[0095] As shown in Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , in some embodiments, the driving part 320 includes a driving gear 350 and a driving motor, the main shaft of the driving motor is drivingly connected with the driving gear 350, the driving wheel 340 is a driven gear, and the driving gear 350 and the driven gear are engaged.

[0096] In these embodiments, the design of the tab 110 pretreatment device realizes the precise control of the driving wheel 340 by using a gear transmission system, and ensures that the tab 110 can be accurately inclined towards the axis of the full-tab jelly roll 100.

[0097] The main shaft of the driving motor is connected with the driving gear 350 through a shaft coupling or other transmission component, so as to ensure that the rotation of the motor can be directly transmitted to the driving gear 350. The driving motor can be precisely controlled by a control system, and by adjusting the rotation speed and rotation angle of the motor, the precise control of the driving gear 350 can be realized.

[0098] The driving gear 350 is in transmission connection with the main shaft of the driving motor, ensuring that the rotation of the motor can be transmitted to the driving gear 350. The driving gear 350 is in meshing transmission with the driven gear (i.e., the driving wheel 340), and the rotational motion is transmitted to the driving wheel 340 through the meshing transmission between the gears. The driven gear is in rotational connection with the wheel seat 360, ensuring that the driven gear can freely rotate around its axis. A plurality of guide grooves 341 are provided on the driven gear, which are uniformly distributed along the circumferential direction of the driven gear and the extension direction of the guide grooves 341 intersects the radial direction of the driven gear. Each guide post 380 is arranged in the corresponding guide groove 341 and is in sliding fit with the guide groove 341. When the driven gear rotates, the guide post 380 will slide in the guide groove 341, thereby realizing radial movement. Each push-pull rod 370 is correspondingly arranged with a guide post 380 and a scraper 390, and the push-pull rod 370 extends along the radial direction of the driven gear. One end of the push-pull rod 370 is connected with the corresponding guide post 380, and the other end is connected with the corresponding scraper 390. The push-pull rod 370 is in sliding connection with the wheel seat 360, ensuring that the push-pull rod 370 can freely move along the radial direction of the driven gear.

[0099] Obviously, through the precise control of the driving motor, the precise rotation of the driving gear 350 can be realized, thereby precisely controlling the rotation angle of the driven gear. This ensures that the sliding distance and direction of the guide post 380 in the guide groove 341 are consistent, thereby precisely controlling the radial movement of the scraper 390. Moreover, the movement distance and direction of all the scrapers 390 are consistent, ensuring that the deflection angles of all the tabs 110 are consistent, thereby improving the neatness of the tabs 110.

[0100] Furthermore, the gear transmission has the characteristics of high precision and high efficiency, which can ensure that the rotation angle and speed of the driven gear are completely synchronized with the driving gear 350, thereby reducing the transmission error.

[0101] As shown in FIGS. Figure 7 and Figure 8 In some embodiments, the scraper 390 extends along the circumferential direction of the driving wheel 340.

[0102] The included angle between the extension direction of the guide groove 341 and the radial direction of the driving wheel 340 gradually increases in the direction away from the axis of the driving wheel 340.

[0103] This design further improves the performance and reliability of the tab 110 pretreatment device by optimizing the structure of the guide groove 341 and the scraper 390.

[0104] The scraper 390 extends along the circumferential direction of the driving wheel 340, which means that the scraper 390 occupies a certain arc length in the circumferential direction of the driving wheel 340. The circumferential extension design of the scraper 390 can provide a larger contact area.

[0105] Exemplarily, the scraper 390 is arranged as an arc-shaped plate. Of course, in other embodiments, the scraper 390 can also be arranged as a trapezoidal plate or the like.

[0106] The included angle between the extension direction of the guide groove 341 and the radial direction of the driving wheel 340 gradually increases in the direction away from the axis of the driving wheel 340. This design can make the sliding path of the guide column 380 in the guide groove 341 present a gradual change, thereby realizing the smooth radial movement of the push-pull rod 370.

[0107] Exemplarily, the guide groove 341 is arranged as an arc-shaped groove. Of course, in other embodiments, the guide groove 341 can also be arranged as a slope groove.

[0108] Obviously, the included angle of the guide groove 341 gradually increases in the direction away from the axis of the driving wheel 340, so that the sliding path of the guide column 380 in the guide groove 341 presents a gradual change. This design can ensure that the radial movement of the push-pull rod 370 is more smooth, and sudden displacement and impact are reduced. The smooth radial movement can reduce the shaking of the push-pull rod 370 and the scraper 390 during movement, and improve the stability and reliability of the entire system. The circumferential extension design of the scraper 390 and the gradual change design of the guide groove 341 can ensure that the movement distance and direction of all the scrapers 390 are consistent, thereby realizing the uniform laying of the tabs 110. The neatness of the tabs 110 is further improved, which ensures that all the tabs 110 can be accurately inclined towards the axis of the full-tab roll core 100, and improves the alignment accuracy during welding.

[0109] As shown in FIG. 1, Figure 4 In some embodiments, the tab 110 pretreatment device further comprises a conveying assembly 500 for conveying the full-tab roll core 100 to move along a first preset path, the first preset path having a pretreatment station, and the axis of the full-tab roll core 100 located at the pretreatment station coincides with the set axis;

[0110] The tab laying assembly 300 further comprises a mounting seat 330 and a second driving member 310, the mounting seat 330 and the first driving member are connected, and the second driving member 310 and the mounting seat 330 are connected, the second driving member 310 being used for driving the mounting seat 330 to move along the set axis, so that the tabs 110 of the full-tab roll core 100 located at the pretreatment station can enter and exit the containing groove formed by the plurality of scrapers 390.

[0111] In these embodiments, the tab 110 pretreatment device realizes the accurate conveying of the full-tab roll core 100 and the automatic laying of the tabs 110 by adding the conveying assembly 500 and improving the design of the tab laying assembly 300.

[0112] The conveying assembly 500 is used to convey the full-tab core 100 along a first preset path. The first preset path has a pre-processing station, where the axis of the full-tab core 100 located at the pre-processing station coincides with the set axis. This ensures that the axis of the full-tab core 100 is precisely aligned with the set axis when it enters the pre-processing station, providing conditions for the subsequent tab 110 bending operation.

[0113] The mounting base 330 is connected to the first driving member and is used to fix and support multiple scrapers 390. The second driving member 310 is connected to the mounting base 330 and is used to drive the mounting base 330 to move along a set axis. The receiving groove formed by the multiple scrapers 390 is used to receive the tabs 110 of the full-tab core 100. The second driving member 310 drives the mounting base 330 to move along the set axis, so that the tabs 110 of the full-tab core 100 located in the pre-processing station can enter and exit the receiving groove, realizing the automatic flattening of the tabs 110.

[0114] Clearly, the conveying assembly 500 ensures that the axis of the full-tab core 100 is precisely aligned with the set axis when it enters the pre-processing station, providing an accurate position for the subsequent tab 110 bending operation. Each full-tab core 100 entering the pre-processing station maintains a consistent alignment, ensuring that each tab 110 is bent accurately. The conveying assembly 500 can automatically transport the full-tab core 100 along a first preset path, reducing manual intervention and improving production efficiency. The second drive unit 310 drives the mounting base 330 to move along the set axis, enabling the tab 110 to automatically enter and exit the receiving slot, achieving automatic tab bending.

[0115] like Figure 4 As shown, in some embodiments, the set axis is set vertically, the first preset path is located in the horizontal plane, the conveying assembly 500 includes a conveyor belt 520 and side plates 510, the conveying direction of the conveyor belt 520 is the extension direction of the first preset path, and side plates 510 are respectively provided on both sides of the conveyor belt 520. A pair of side plates 510 are used to prevent the all-pole lug core 100 from tilting to the side.

[0116] In these embodiments, the design of this tab 110 pretreatment device ensures that the full tab core 100 maintains a precise position and orientation during transport and processing by optimizing the conveying assembly 500 and the tab collapsing assembly 300.

[0117] The axis is set vertically to ensure that the axis of the full-ear core 100 is precisely aligned with the set axis when it enters the pretreatment station, i.e., the full-ear core 100 is placed vertically. The first preset path is located in the horizontal plane, and the full-ear core 100 is conveyed to the pretreatment station along this path. The conveyor belt 520 is in the extension direction of the first preset path and is responsible for conveying the full-ear core 100 from the entrance to the pretreatment station. Side plates 510 are respectively provided on both sides of the conveyor belt 520. The function of the side plates 510 is to prevent the full-ear core 100 from tilting laterally during the conveying process and to ensure that it moves stably along the first preset path.

[0118] For example, the distance between a pair of side plates 510 is slightly larger than the outer diameter of the omnipolar lug 100, so as to provide support when the omnipolar lug 100 is tilted.

[0119] like Figure 4 and Figure 9 As shown, in some embodiments, the tab 110 pretreatment device further includes a clamping assembly 400, which includes a pair of clamping members 410 and a third driving member. The pair of clamping members 410 are located on both sides of the pretreatment station, and are arranged opposite to each other. The pair of clamping members 410 have an opposing direction between them, which is perpendicular to a set axis and intersects with a first preset path. The third driving member is connected to the pair of clamping members 410, and is used to drive the pair of clamping members 410 to move closer or further away from each other along the opposing direction to clamp or release the bottom and / or middle of the full tab core 100.

[0120] In these embodiments, this tab 110 pretreatment device further improves the stability and control precision of the full tab core 100 by adding clamping components 400, ensuring the smooth progress of the tab 110 falling over process.

[0121] A pair of clamping members 410 are located on both sides of the pretreatment station and are arranged opposite each other. The opposing direction is perpendicular to the set axis and intersects with the first preset path. A third driving member is connected to the pair of clamping members 410 and is used to drive the clamping members 410 to move closer or further away from each other along the opposing direction to clamp or release the bottom and / or middle of the full-pole ear core 100.

[0122] Obviously, when the full-tab core 100 reaches the pre-processing station, the third drive unit drives the clamping member 410 to approach and clamp the full-tab core 100, ensuring its stability during the tab 110's collapse and preventing positional displacement due to vibration or external force. The clamping member 410 is perpendicular to the set axis, ensuring that the full-tab core 100 maintains precise alignment with the set axis while clamped.

[0123] Specifically, by setting the opposing direction and the set axis perpendicularly, and the opposing direction intersecting with the first preset path, it is possible to move the pair of clamping members 410 away from the first preset path, thereby avoiding interference with the movement of the full-pole ear core 100.

[0124] For example, the opposing direction and the first preset path are partially perpendicular to each other at the preprocessing station.

[0125] In some embodiments, the first preset path is set to a U-shape, thereby reducing the space occupied by the entire device.

[0126] like Figure 6 As shown, in some embodiments, the mounting base 330 is arranged with a through-hole 331, the through-hole 331 and the set axis are coaxially arranged, wherein the movable arrangement of the mounting base 330 allows a portion of the omnipolar lug core 100 to enter and exit the through-hole 331, and the omnipolar lug core 100 and the through-hole 331 are in clearance fit.

[0127] In these embodiments, the electrode tab 110 pretreatment device further improves the positioning accuracy and stability of the full electrode tab core 100 by adding a limiting hole 331, ensuring the smooth progress of the electrode tab 110 falling over process.

[0128] The limiting hole 331 is coaxially arranged with the setting axis. The design of the limiting hole 331 ensures that the axis of the full-pole lug core 100 is precisely aligned with the setting axis when it enters the pre-processing station. The limiting hole 331 and the full-pole lug core 100 are clearance fit, which allows the full-pole lug core 100 to move freely axially within the limiting hole 331, while ensuring the precise alignment of its axis.

[0129] Clearly, the design of the limiting hole 331 ensures that the axis of the full-tab core 100 is precisely aligned with the set axis when it enters the pre-processing station, providing an accurate position for the subsequent tab 110 bending operation. The clearance fit between the limiting hole 331 and the full-tab core 100 allows for free movement while ensuring precise alignment of the axis. This provides lateral support for the full-tab core 100, improving positioning accuracy, and also allows the tab 110 to enter the receiving groove. Furthermore, the design of the limiting hole 331 prevents the full-tab core 100 from shifting laterally or longitudinally when entering the pre-processing station, ensuring the stability of its position and posture.

[0130] like Figure 9As shown, in some embodiments, the clamping assembly 400 further comprises a position sensor 420 and a controller, the position sensor 420 and the controller are electrically connected, the controller is electrically connected with the third driving member and / or the second driving member 310, the position sensor 420 is used to detect whether the full tab roll core 100 is in the pretreatment station, and the controller is used to receive the signal of the position sensor 420 and control the action of the third driving member and / or the second driving member 310.

[0131] For example, cylindrical lithium ion batteries can be divided into tight full tab and channel full tab.

[0132] After the cylindrical channel full tab winding is completed, the full tab roll core 100 is placed in the pretreatment station, the position sensor 420 detects the full tab roll core 100, the clamping assembly 400 tightens and fixes the full tab roll core 100, and the mounting seat 330 descends. When the scraper 390 coincides with the tab 110 by 0.1-0.5 mm, the scraper 390 starts to rotate, and applies a force along the radial direction of the full tab roll core 100 to the tab 110. The tab 110 deforms along the radial direction of the roll core under the action of the force, and the tab 110 slightly tilts along the radial direction. After the scraper 390 rotates, it rebounds. At this time, the mounting seat 330 moves upward, the clamping assembly 400 opens, the full tab roll core 100 is transported to the next process, and the tab 110 pretreatment process is completed.

[0133] For the cylindrical tight full tab winding, the difference from the above is that, after the scraper 390 coincides with the tab 110 of the full tab roll core 100 by 0.5-3 mm, the scraper 390 starts to rotate, and applies a force along the radial direction of the roll core to the tab 110. The tab 110 deforms along the radial direction of the roll core under the action of the force, and the tab 110 collapses along the radial direction.

[0134] In addition, square lithium ion batteries can be divided into tight full tab and channel full tab.

[0135] For the square channel full tab winding, the difference from the above is that, after the scraper 390 coincides with the tab 110 of the full tab roll core 100 by 0.1-0.5 mm, the scraper 390 starts to rotate, and applies a force along the radial direction of the roll core to the tab 110. The tab 110 deforms along the radial direction of the roll core under the action of the force, and the tab 110 collapses along the radial direction.

[0136] For the square tight full tab winding, the difference from the above is that, after the scraper 390 coincides with the tab 110 of the full tab roll core 100 by 0.5-3 mm, the scraper 390 starts to rotate, and applies a force along the radial direction of the roll core to the tab 110. The tab 110 deforms along the radial direction of the roll core under the action of the force, and the tab 110 collapses along the radial direction.

[0137] In all of the examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus other examples of the exemplary embodiments can have different values.

[0138] It should be noted that like reference numerals and letters refer to like items throughout the several views, and once an item is defined in one view, it is not necessary to further define and explain it in the subsequent views.

[0139] The above-described embodiments are merely illustrative for the present application and do not restrict the scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these should be within the scope of the present application.

Claims

1. A full tab cell, characterized by, The full-tab battery comprises: a full-tab winding core, the full-tab winding core having a winding axis and tabs, the tabs comprising positive tabs and negative tabs; wherein the positive tabs and / or the negative tabs are arranged to be skewed towards the winding axis of the full-tab winding core; a current collector disc, the current collector disc being arranged at one end of the full-tab winding core where the tabs arranged to be skewed towards the winding axis of the full-tab winding core, the current collector disc having a current collector disc axis and a plurality of welding grooves, the plurality of welding grooves being arranged at the end of the current collector disc away from the full-tab winding core, the plurality of welding grooves being arranged to be spaced apart along the circumference of the current collector disc axis, the welding grooves being arranged to extend in a preset direction, the bottom of the welding grooves and the corresponding tabs being welded; in the preset direction, the height of the bottom of the welding grooves gradually increases from the end of the current collector disc close to the full-tab winding core, and the preset direction is away from the current collector disc axis.

2. The full tab cell of claim 1, wherein, The plurality of welding grooves have the same groove bottom thickness.

3. The full-ledge cell of claim 1, wherein, The current collector disc is provided with a plurality of through holes, the through holes being arranged to extend in the direction away from or close to the full-tab winding core.

4. An electric device, characterized by The electric device comprises the full-tab battery according to any one of claims 1 to 3.

5. A tab pre-treatment device for manufacturing a full-tab jelly-roll of the full-tab battery of any one of claims 1 to 3, characterized by, The tab pretreatment device comprises: a conveying assembly for conveying the full-tab winding core to move along a first preset path, the first preset path having a pretreatment station, the axis of the full-tab winding core located at the pretreatment station coinciding with the set axis; a tab flattening assembly, the tab flattening assembly comprising a plurality of scrapers, a first driving member, a mounting seat and a second driving member, the plurality of scrapers being arranged to be spaced apart along the set axis, the first driving member being connected with the plurality of scrapers, the first driving member being capable of driving the plurality of scrapers to move along the radial direction of the circular distribution line where the plurality of scrapers are located, so that the plurality of scrapers can move close to or away from each other; the mounting seat being connected with the first driving member, the second driving member being connected with the mounting seat, the second driving member being used to drive the mounting seat to move along the set axis, so that the tabs of the full-tab winding core located at the pretreatment station can enter or exit the accommodating groove formed by the plurality of scrapers.

6. The tab pre-treatment apparatus according to claim 5, characterized by The first driving member comprises: a driving wheel and a wheel seat, the driving wheel and the wheel seat being rotationally connected, the axis of the driving wheel coinciding with the set axis, the driving wheel having a plurality of guide grooves, the plurality of guide grooves being arranged to be spaced apart along the circumference of the driving wheel; wherein the extension direction of the guide grooves intersects with the radial direction of the driving wheel; a plurality of guide columns, the guide columns being arranged to pass through the corresponding guide grooves, and the guide columns and the guide grooves being slidingly fitted; A plurality of push-pull rods, a plurality of the push-pull rods and a plurality of the guide columns are arranged one-to-one, a plurality of the push-pull rods and a plurality of the scrapers are arranged one-to-one, the push-pull rod extends along the radial direction of the driving wheel, one end of the push-pull rod is connected with the corresponding guide column, the other end of the push-pull rod is connected with the corresponding scraper, and the push-pull rod and the wheel seat are slidingly connected, so that the push-pull rod can move along the radial direction of the driving wheel; A driving part is connected with the driving wheel, and the driving part is used to drive the driving wheel to rotate.

7. The tab pretreatment apparatus according to claim 6, characterized by The driving part comprises a driving gear and a driving motor, the main shaft of the driving motor is drivingly connected with the driving gear, the driving wheel is a driven gear, and the driving gear and the driven gear are engaged; The scraper extends along the circumferential direction of the driving wheel; The included angle between the extension direction of the guide groove and the radial direction of the driving wheel gradually increases in the direction away from the axis of the driving wheel.

8. The tab pretreatment apparatus according to claim 7, characterized by The setting axis is vertically arranged, the first preset path is located in a horizontal plane, the conveying assembly comprises a conveying belt and side plates, the conveying direction of the conveying belt is the extension direction of the first preset path, and the conveying belt is provided with side plates on both sides respectively, and a pair of the side plates are used to prevent the full-tab roll core from being laterally tilted.

9. The tab pretreatment apparatus according to claim 8, characterized by The tab pretreatment device further comprises a clamping assembly, the clamping assembly comprises a pair of clamping pieces and a third driving piece, the pair of clamping pieces are respectively located on both sides of the pretreatment station, the pair of clamping pieces are oppositely arranged, the pair of clamping pieces have an opposite direction therebetween, the opposite direction is perpendicular to the setting axis, the opposite direction intersects with the first preset path, the third driving piece is connected with the pair of clamping pieces, and the third driving piece is used to drive the pair of clamping pieces to move close to or away from each other along the opposite direction, so as to clamp or release the bottom and / or middle part of the full-tab roll core.

10. The tab pretreatment apparatus according to claim 9, characterized by The mounting seat penetrates through a limiting hole, the limiting hole is coaxially arranged with the setting axis, wherein the movement of the mounting seat can make part of the full-tab roll core enter or exit the limiting hole, and the full-tab roll core and the limiting hole are in clearance fit; The clamping assembly further comprises a position sensor and a controller, the position sensor and the controller are electrically connected, the controller is electrically connected with the third driving piece and / or the second driving piece, the position sensor is used to detect whether the pretreatment station has the full-tab roll core, and the controller is used to receive the signal of the position sensor and control the action of the third driving piece and / or the second driving piece.

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