Pole piece processing technology, rubberizing equipment and pole piece

Abstract

The invention discloses a pole piece processing technology, rubberizing equipment and a pole piece, and relates to the technical field of batteries, the pole piece processing technology comprises the following steps: cleaning one side of an active substance layer by using laser to form a tab area; and the edge, close to the active material layer, of the tab area is coated with insulating glue. According to the technical scheme provided by the invention, the performance stability and safety of the battery are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and particularly to a pole piece processing technology, a gluing device and a pole piece. Background Art

[0002] In the process of battery manufacturing, slurry coating is one of the key steps. However, after the slurry is roll-pressed, a thinning area with a thinner slurry thickness often forms in the edge area of the current collector. After the pole piece is formed by subsequent die-cutting, the existence of the thinning area seriously affects the consistency and safety of the battery. Summary of the Invention

[0003] The main object of the present invention is to propose a pole piece processing technology, a gluing device and a pole piece, aiming to improve the performance stability and safety of the battery.

[0004] To achieve the above object, a pole piece processing technology proposed by the present invention is used for the processing of a pole piece. The pole piece includes a current collector and an active material layer provided on the current collector. The pole piece processing technology includes the following steps: Using a laser to clean one side of the active material layer to form an ear area; Coating an insulating adhesive on the edge of the ear area close to the active material layer.

[0005] In an embodiment, the insulating adhesive is sprayed on the ear area.

[0006] In an embodiment, the pole piece processing technology further includes: Arranging the insulating adhesive on a tape; Pressing the tape against the edge of the ear area close to the active material layer to coat the insulating adhesive on the ear area.

[0007] In an embodiment, the current collector is conveyed in the X direction, and the tape is continuously or intermittently pressed against the ear area.

[0008] The present invention also proposes a gluing device applicable to the above pole piece processing technology. The gluing device includes: A carrying component for conveying the current collector in the X direction; A tape unwinding component, on which the tape is wound, and the tape unwinding component is used to release the tape with the insulating adhesive; A tape winding component provided on one side of the tape unwinding component, and the tape winding component is used to wind the tape; A roller component provided between the tape unwinding component and the tape winding component, and the tape is wound around the roller component; The pressure-applying assembly is disposed between the unwinding assembly and the winding assembly, and is located on the side of the strip away from the current collector. The pressure-applying assembly extends and retracts toward the current collector to press the strip against the current collector.

[0009] In one embodiment, the tape-applying device further includes a position adjustment assembly. The position adjustment assembly is disposed on one side of the current collector. The unwinding assembly, the winding assembly, the roller assembly, and the pressure-applying assembly are all disposed on the position adjustment assembly. The position adjustment assembly is used to adjust the relative position between the pressure-applying assembly and the bearing assembly.

[0010] In one embodiment, the conveying direction of the current collector is the X direction, and the width direction of the current collector is the Y direction. The position adjustment assembly includes: An X-axis sliding assembly having a first connection end and a first sliding end. The first connection end is fixedly disposed on one side of the bearing assembly, and the first sliding end moves along the X direction. A Y-axis sliding assembly having a second connection end and a second sliding end. The second connection end is connected to the first sliding end, and the second sliding end moves along the Y direction. The unwinding assembly, the winding assembly, the roller assembly, and the pressure-applying assembly are all disposed on the second sliding end.

[0011] In one embodiment, the pressure-applying assembly includes: A telescopic member having a fixed end and a telescopic end. The fixed end is connected to the second sliding end, and the telescopic end extends and retracts in a direction perpendicular to the current collector. A passing roller rotatably disposed at the telescopic end. The strip is wound around the passing roller. A pressing block disposed at the telescopic end. The pressing block abuts against the side of the strip away from the current collector.

[0012] In one embodiment, the bearing assembly includes: A bearing member provided with a bearing plane. The bearing plane is provided with negative pressure generating holes. The current collector is placed on the bearing plane and is adsorbed by the negative pressure generating holes. A sensor assembly disposed on one side of the bearing member. The sensing assembly is used to detect the position of the tab area on the current collector.

[0013] The present invention also provides a pole piece, which is processed by the above-mentioned pole piece processing process.

[0014] In the technical solution of the present invention, the active material area is cleaned by using a laser cleaning process to form an ear area, which facilitates subsequent ear welding. At the same time, the thinning area is eliminated, improving the consistency of the battery. Meanwhile, an insulating glue is coated on the edge of the ear area close to the active material layer, which can reduce the reaction between the materials in the ear area and the electrolyte of the battery, improving the stability of the battery. In addition, the charge conduction ability of the positive electrode material is increased, the internal resistance of the electrode is reduced, the specific surface area of the electrode is increased, and the energy density of the battery is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0016] Figure 1 Structural schematic diagrams of two kinds of electrode sheets before and after applying glue in the present invention; Figure 2 Structural schematic diagram of the glue application device provided by the present invention; Figure 3 Another structural schematic diagram of the glue application device provided by the present invention; Figure 4 Structural schematic diagram of the pressure glue component in the glue application device provided by the present invention.

[0017] Explanation of the reference numerals in the drawings: 10. Current collector; 11. Ear area; 20. Insulating glue; 21. Tape; 100. Carrying component; 110. Carrier; 120. Sensor component; 200. Unwinding component; 300. Rewinding component; 400. Roller component; 500. Pressure glue component; 510. Telescopic part; 520. Guide roller; 530. Pressure block; 600. Position adjustment component; 610. X-axis sliding component; 620. Y-axis sliding component.

[0018] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0020] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0022] In order to improve the performance stability and safety of the battery, the present technical solution proposes a pole piece processing process, which includes: Using a laser to clean one side of the active material layer to form an ear area 11; Coating an insulating adhesive 20 on the edge of the ear area 11 close to the active material layer.

[0023] In the technical solution of the present invention, by using a laser cleaning process to clean the active material area to form the ear area 11, it is convenient for subsequent ear welding, eliminates the thinning area at the same time, improves the consistency of the battery. At the same time, coating the insulating adhesive 20 on the edge of the ear area 11 close to the active material layer can reduce the reaction between the material in the ear area 11 and the electrolyte of the battery, improve the stability of the battery. In addition, it increases the charge conduction ability of the material in the ear area 11 and improves the energy density of the battery.

[0024] In the battery processing technology, it is generally necessary to select an appropriate metal material as the current collector 10, such as aluminum foil or copper foil, etc.; then, a positive or negative electrode slurry is uniformly coated on one side of the current collector 10, and the slurry is evenly coated on the current collector 10 through a coater to form an active material layer; this solution is applicable to the processing of the current collector 10 coated with the slurry. Specifically, first, the laser cleaning technology is used to clean the edge area of the active material layer to remove part of the active material layer, so as to form a tab area 11 on the current collector 10 where the active material is not coated. The use of laser cleaning not only has high efficiency but also does not consume consumables, saving costs. In addition, the position of laser cleaning is the edge of the active material layer, that is, the thinning area, so the thinning area is eliminated, improving the consistency of the battery; then, the insulating glue 20 is coated at the place where it intersects with the active material layer within the tab area 11, and the coating method can adopt traditional processes such as dispensing. In this way, not only can the reaction between the positive electrode material and the electrolyte be reduced, enhancing the stability of the battery performance, but also the charge conduction ability of the positive electrode material can be increased, thereby improving the battery energy density, and it can also prevent the degradation and dissolution of the battery positive electrode material, reducing the risks of battery thermal runaway and combustion; then, an oven or the like can be used to dry the insulating glue 20 to improve the adhesion of the insulating glue 20, and the CCD detection system or other appropriate detection means are used to check whether the attached insulating glue 20 meets the expected position and size requirements, ensuring that there is no missed attachment or excess part, and subsequent processing of the electrode sheet is carried out.

[0025] In another embodiment of the present invention, the insulating glue 20 can be coated on the tab area 11 by spraying. Specifically, a nozzle can be set on the rubber tube, a pump is connected to the rubber tube, and the insulating glue 20 is sprayed onto the tab area 11 by means of pressure. Compared with the dispensing method, the spraying method can coat the insulating glue 20 on the tab area 11 more efficiently, reducing problems such as uneven glue amount and discontinuous glue strips that may occur during the dispensing process, thereby improving the coating quality and reliability. On the other hand, the spraying method does not require frequent wiping of the needle head, and can also effectively reduce the use of consumables.

[0026] In another embodiment of the present invention, the electrode sheet processing technology includes: Arrange the insulating glue 20 on the tape 21; Press the tape 21 against the edge of the tab area 11 close to the active material layer to transfer the insulating glue 20 to the tab area 11.

[0027] Such as Figure 1, in this process, active materials such as positive and negative electrode slurries are coated on the current collector 10. There is a tab area 11 adjacent to the area coated with the active material at the edge of the current collector 10. First, the insulating adhesive 20 is pre-arranged on the adhesive tape 21. The adhesive tape 21 can be made of a material similar to a release film or the backing film of ordinary double-sided tape. The insulating adhesive 20 can be designed in a form similar to double-sided tape or the correction fluid on a correction tape. For convenient storage, the adhesive tape 21 can be wound into a roll. When gluing is needed, a certain length of the adhesive tape 21 is pulled out, and the tape 21 is aligned with the edge position of the tab area 11 on the current collector 10. Among them, the edge position of the above tab area 11 is the area where the tab area 11 and the active material layer meet. Then, the tape 21 is pressed against the edge position of the tab area 11. At this time, the insulating adhesive 20 on the tape 21 can adhere to the surface of the tab area 11. Then, the tape is moved away from the tab area 11, which can cause the insulating adhesive 20 to be adsorbed on the surface of the tab area 11, and the tape 21 can be separated from the insulating adhesive 20 to complete the gluing; in this process, arranging the insulating adhesive 20 on the tape 21 can make the thickness of the insulating adhesive 20 more consistent, thereby ensuring the consistency of the thickness of the insulating adhesive 20 after gluing and improving the quality of the coating of the insulating adhesive 20. Since the insulating adhesive 20 is designed in a form similar to double-sided tape or the correction fluid on a correction tape, its moisture content is low (higher viscosity), which can shorten or even eliminate the drying time, greatly reducing the process steps and equipment requirements, and reducing the energy consumption and environmental burden.

[0028] In an embodiment of the present invention, the current collector 10 is conveyed along the X direction, and the tape 21 is continuously or intermittently pressed against the tab area 11. When pressing, the tape 21 moves in the same direction as the current collector 10 at the same speed. If the entire tab area 11 needs to be continuously covered with the insulating adhesive 20, the tape 21 is continuously pressed on the current collector 10 through the pressing component 500. At this time, the tape 21 flows synchronously with the current collector 10, and the insulating adhesive 20 can be continuously attached to the current collector 10; for the case where local gluing needs to be performed at specific positions in the tab area 11, intermittent pressing actions can be performed on the tape 21 by the pressing component 500 to intermittently glue on the current collector 10, so as to meet the insulating adhesive 20 coating requirements of different types of electrode sheets.

[0029] As Figures 1 to 4 , the present invention also proposes a gluing device suitable for the above-mentioned electrode sheet processing process. The gluing device includes: A carrying component 100 for conveying the current collector 10 along the X direction; A tape unwinding component 200, on which the tape 21 is wound. The tape unwinding component 200 is used to release the tape 21 with the insulating adhesive 20; A winding component 300, arranged on one side of the tape unwinding component 200. The winding component 300 is used to wind the tape 21; The roller assembly 400 is disposed between the unwinding assembly 200 and the winding assembly 300, and the strip 21 is wound around the roller assembly 400; The rubber pressing assembly 500 is disposed between the unwinding assembly 200 and the winding assembly 300, and is located on the side of the strip 21 away from the current collector 10. The rubber pressing assembly 500 expands and contracts toward the current collector 10 to press the strip 21 against the current collector 10.

[0030] Among them, the bearing component 100 can be a roller, etc. The bearing component 100 can transport the collector 10 along the X direction. A reeling component 200 is arranged on one side of the bearing component 100. The reeling component 200 can be used to store a material strip 21 wound into a roll. The material strip 21 is pre-arranged with insulating glue 20 and adopts a material similar to a release film or a common double-sided adhesive backing film to ensure its flexibility and facilitate the separation of the insulating glue 20. The reeling component 200 is responsible for releasing the glue-coated material strip 21 when glue is required to ensure that the material strip 21 can be smoothly unfolded. A damper can be connected to the reeling component 200 to provide a damping force during unwinding to ensure that the material strip 21 can be smoothly released. A reeling component 300 is arranged on one side of the reeling component 200. The reeling component 300 has a similar structure to the reeling component 200 and can reel up the material strip 21 after glue is applied. A motor or other driving device can be set on the reeling component 300 to drive the rotation of the reeling component 300 to achieve For the winding of the material strip 21, similarly, the winding assembly 300 is also provided with a damper to cooperate with the unwinding assembly 200 to jointly tension the material strip 21. In addition, the winding assembly 300 is connected to the unwinding assembly 200 through a gear transmission or a belt transmission structure, and the winding assembly 300 and the unwinding assembly 200 can rotate synchronously to prevent the material strip 21 from being too tight or too loose; in addition, the roller assembly 400 is arranged between the unwinding assembly 200 and the winding assembly 300, and is composed of a plurality of rollers. The material strip 21 is wound on these rollers, and each roller can rotate freely to reduce the friction resistance of the material strip 21 during the transmission process; the roller assembly 400 plays a role in guiding and supporting the glue-coated material strip 21 to ensure that the material strip 21 will not be offset or twisted during the transmission process, thereby ensuring the accuracy of the glue application. In addition; the glue pressing assembly 500 is arranged between the unwinding assembly 200 and the winding assembly 300, and is located on the side of the material strip 21 away from the collector 10. It includes a telescopic member 510, a roller 520 and a pressing block 530. The telescopic member 510 can be a device such as a cylinder or an electric push rod that can realize the telescopic function. The telescopic member 510 has a fixed end and a telescopic end. The fixed end can be fixed to one side of the bearing assembly 100 through a structure such as a frame, and the telescopic end is telescopic toward the current collector 10 in a direction perpendicular to the current collector 10; the roller 520 is rotatably arranged at the telescopic end, the material belt 21 is wound around the roller 520, and the pressing block 530 is arranged at the telescopic end. The pressing block 530 abuts against the side of the material belt 21 away from the current collector 10. The main function of the glue pressing assembly 500 is to press the material belt 21 to the edge of the tab area 11 of the current collector 10.The operation process of the device will be described as follows: The current collector 10 is first placed on the bearing plane of the bearing component 100 and fixed by negative pressure adsorption; then the unwinding component 200 and the winding component 300 rotate synchronously to start releasing the coated tape 21. The tape 21 reaches the glue pressing component 500 after being supported and guided by the roller component 400. The glue pressing component 500 presses the tape 21 against the edge of the tab area 11 at an appropriate position according to the preset program or the detection result of the sensor. At this time, the tape 21 and the current collector 10 move synchronously, and the insulating glue 20 is transferred to the surface of the tab area 11. After the pressing is completed, the winding component 300 automatically winds up the used coated tape 21. The whole process can be monitored in real time through the CCD detection system or other detection means to ensure the accurate glue sticking position. In the above structure, the winding component 300 and the unwinding component 200 may not be provided with a mechanism for driving rotation. Through the frictional force of the tape 21 abutted against the current collector 10, the current collector 10 drives the tape 21 to unwind and wind up, and thus the glue sticking can also be realized. Through the above structure, the glue sticking device not only improves the sticking accuracy of the insulating glue 20, but also improves the production efficiency, and is suitable for the automated production line operation of large-scale lithium battery production.

[0031] As Figure 2In one embodiment of the present invention, the glue sticking device further includes a position adjustment component 600, which is arranged on one side of the current collector 10, and the unwinding component 200, the winding component 300, the roller component 400 and the glue pressing component 500 are all arranged on the position adjustment component 600. The position adjustment component 600 is used to adjust the relative position of the glue pressing component 500 and the supporting component 100. A sensor can be arranged on the supporting component 100 to detect the position of the current collector 10. Before and during the glue sticking process, the position adjustment component 600 can adjust the position of the glue pressing component 500 in real time according to the data of the sensor, and then adjust the relative position of the insulating glue 20 attached to the current collector 10, so as to ensure the position accuracy of the insulating glue 20 coating. In one embodiment of the present invention, the position adjustment component 600 includes an X-axis sliding component 610 and a Y-axis sliding component 620, which are respectively used to adjust the position of the glue pressing component 500 along the X direction (the length direction of the current collector 10) and the Y direction (the width direction of the current collector 10). In addition, the Z-axis adjustment is achieved through the telescopic member 510 of the glue pressing assembly 500 to ensure that the pressing force is uniform and controllable; wherein, the X-axis sliding assembly 610 may include a mounting plate, the mounting plate is fixed in position through the frame, the first connecting end is arranged on the mounting plate, a first slide rail extending along the X direction may be arranged on the mounting plate, a first sliding slider sliding on the first slide rail constitutes the first sliding end, the first slider is connected to a connecting plate, and the connecting plate constitutes the second connecting end; a second slide rail extending along the Y direction is arranged on the connecting plate, a second slider slidingly arranged on the second slide rail, the second slider constitutes the second sliding end, and the unwinding assembly 200, the winding assembly 300, the roller assembly 400 and the glue pressing assembly 500 are all arranged on the second slider. In actual production, a sensor such as a CCD may be arranged on the travel path of the current collector 10 to detect the position of the current collector 10, and the sensor may transmit the position of the current collector 10 to the host computer in the background, and the host computer controls the position adjustment assembly 600 to adjust the position, so that the position of the material belt 21 is sufficiently accurate when the glue is applied.

[0032] like Figure 4 In one embodiment of the present invention, the glue pressing assembly 500 includes: The telescopic member 510 has a fixed end and a telescopic end, the fixed end is connected to the second sliding end, and the telescopic end is telescopic in a direction perpendicular to the current collector 10; A roller 520 is rotatably disposed at the telescopic end, and the material belt 21 is wound around the roller 520; The pressing block 530 is disposed at the telescopic end, and the pressing block 530 abuts against a side of the material strip 21 away from the current collector 10 .

[0033] Among them, the telescopic member 510 has a fixed end and a telescopic end. The fixed end is connected to the second sliding end of the Y-axis sliding assembly 620, and the telescopic end extends and contracts in a direction perpendicular to the current collector 10 (i.e., the Z-axis direction). The telescopic member 510 can be a cylinder, an electric push rod or other similar actuators; the passing roller 520 is rotatably arranged at the telescopic end, and the glue-coated tape 21 is wound around the passing roller 520. The passing roller 520 supports the glue-coated tape 21 and rotates under the drive of the glue-coated tape 21. The passing roller 520 plays a role in guiding the traveling path of the tape 21 and supporting the tape 21; the pressing block 530 is arranged at the telescopic end and abuts against the side of the tape 21 away from the current collector 10. The pressing block 530 is designed with a material having a certain flexibility, such as rubber or silica gel, etc. Driven by the telescopic member 510, the pressing block 530 presses the tape 21 onto the surface of the tab area 11, so that the insulating glue 20 can quickly adhere to the surface of the tab area 11 after pressing; the working principle will be described below: Before gluing, the glue pressing assembly 500 is adjusted to the initial position where the tape 21 is spaced from the current collector 10. When gluing is required, the telescopic member 510 extends, driving the pressing block 530 to move toward the current collector 10 side, so that the glue-coated tape 21 on the pressing block 530 contacts the edge of the tab area 11 and applies an appropriate pressing force; at this time, the current collector 10 is conveyed in the X direction, the tape 21 moves synchronously in the X direction, and the insulating glue 20 will be transferred from the tape 21 to the surface of the tab area 11. Among them, the part of the pressing block 530 abutting against the tape 21 can be designed as a cone, so that the contact area between the tape 21 and the current collector 10 is reduced, which is convenient for the ceramic glue to be peeled off from the tape 21, and also enables the tape 21 to be more accurately aligned with the tab area 11, avoiding covering unnecessary areas.

[0034] Such as Figure 2 , in another embodiment of the present invention, the carrier assembly 100 includes: A carrier 110, provided with a carrier plane, and the carrier plane is provided with negative pressure generating holes. The current collector 10 is placed on the carrier plane and adsorbed by the negative pressure generating holes; A sensor assembly 120, arranged on one side of the carrier 110, and the sensing assembly is used to detect the position of the tab area 11 on the current collector 10.

[0035] Among them, a negative pressure cavity is arranged inside the carrier 110. The negative pressure cavity is communicated with a negative pressure generating component (such as a negative pressure fan). A bearing plane is provided on the carrier 110. A plurality of negative pressure generating holes are distributed on the bearing plane. The negative pressure generating holes are communicated with the negative pressure cavity and are used to generate uniform negative pressure. The current collector 10 is placed on the bearing plane and is firmly adsorbed by the negative pressure generated by the negative pressure generating holes, ensuring that it remains flat during the entire glue pasting process without shifting or deforming, thereby preventing the current collector 10 from wrinkling and ensuring the glue pasting quality. The sensor assembly 120 is arranged on one side of the carrier 110 and includes detection devices such as an optical sensor or a CCD camera, which is used to detect the position of the tab area 11 and feedback the information to the host computer. The host computer adjusts the position of the position adjustment assembly 600 according to the data provided by the sensor to ensure that the glue can be aligned with the tab area 11 each time, improving the accuracy and consistency of the glue pasting.

[0036] The present invention also proposes a pole piece, which is processed by using the above-mentioned pole piece processing technology. The pole piece processing technology refers to the above-mentioned embodiment. Since this pole piece adopts the technical solution of the above-mentioned pole piece processing technology, it has at least all the beneficial effects brought by the technical solution of the above-mentioned embodiment, which will not be elaborated one by one here.

[0037] The above is only an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the technical concept of the present invention, or direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A pole piece processing process, used for processing a pole piece, the pole piece comprising a current collector and an active material layer provided on the current collector, characterized in that: The pole piece processing process comprises the following steps: Using laser to clean one side of the active material layer to form a tab area; Insulating glue is coated on the tab area near the edge of the active material layer.

2. The pole piece processing process according to claim 1, characterized in that: The insulating glue is sprayed on the tab area.

3. The pole piece processing process according to claim 1, characterized in that: The pole piece processing process also includes: Arranging the insulating adhesive on the material tape; The material strip is pressed onto the edge of the tab region close to the active material layer to apply the insulating glue to the tab region.

4. The pole piece processing process according to claim 3, characterized in that: The current collector is transported along the X direction, and the material strip is pressed against the tab region continuously or intermittently.

5. A glue sticking device, suitable for the pole piece processing process described in claim 3, characterized in that: The glue sticking equipment comprises: A carrying assembly, used for transporting the current collector along the X direction; An unwinding assembly, on which the material tape is wound, and the unwinding assembly is used to release the material tape with the insulating adhesive; A winding assembly, disposed on one side of the unwinding assembly, and used for winding the material strip; A roller assembly is provided between the unwinding assembly and the rewinding assembly, and the material belt is wound around the roller assembly; The glue pressing assembly is arranged between the unwinding assembly and the winding assembly and is located on the side of the material strip away from the current collector. The glue pressing assembly is extended and retracted toward the current collector to press the material strip toward the current collector.

6. The glue sticking device according to claim 5, characterized in that: The glue laminating equipment also includes a position adjustment component, which is arranged on one side of the current collector. The unwinding component, the winding component, the roller component and the glue pressing component are all arranged on the position adjustment component. The position adjustment component is used to adjust the relative position of the glue pressing component and the supporting component.

7. The glue sticking device according to claim 6, characterized in that: The conveying direction of the current collector is the X direction, the width direction of the current collector is the Y direction, and the position adjustment component includes: An X-axis sliding component, comprising a first connecting end and a first sliding end, wherein the first connecting end is fixedly arranged at one side of the bearing component, and the first sliding end moves along the X direction; The Y-axis sliding component has a second connecting end and a second sliding end, the second connecting end is connected to the first sliding end, the second sliding end moves along the Y direction, and the unwinding component, the winding component, the roller component and the glue pressing component are all arranged at the second sliding end.

8. The glue sticking device according to claim 7, characterized in that: The glue pressing component comprises: A telescopic member, comprising a fixed end and a telescopic end, wherein the fixed end is connected to the second sliding end, and the telescopic end is telescopic in a direction perpendicular to the current collector; A passing roller, rotatably arranged at the telescopic end, and the material belt is wound around the passing roller; A pressing block is arranged at the telescopic end, and the pressing block abuts against a side of the material strip away from the current collector.

9. The glue sticking device according to claim 5, characterized in that: The bearing assembly comprises: A carrier, provided with a carrier plane, the carrier plane is provided with negative pressure generating holes, the current collector is placed on the carrier plane and adsorbed by the negative pressure generating holes; A sensor component is arranged on one side of the carrier, and the sensor component is used to detect the position of the pole ear area on the current collector.

10. A pole piece, characterized in that: The pole piece is processed using the pole piece processing process described in any one of claims 1 to 4.

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