Adhesive tape pasting mechanism and adhesive tape pasting system

Abstract

The invention relates to the technical field of processing, in particular to a rubberizing mechanism and a rubberizing system.The rubberizing mechanism comprises an adsorption assembly, and the adsorption assembly is configured to be capable of adsorbing a film and enabling the film to be attached to a first edge of a battery cell. The adsorption assembly is configured to be capable of adsorbing the film and attaching the film to the first edge of the battery cell, so that insulation protection is performed on the first edge of the battery cell, and the risk of metal exposure of the first edge in the film coating process is reduced. And meanwhile, the first edge of the battery cell is rubberized through the rubberizing mechanism, so that automatic rubber coating of the first edge of the battery cell is realized, automation of the whole film coating process is realized, the automation degree is improved, and improvement of the production line efficiency is facilitated.

Description

Technical Field

[0001] This application relates to the technical field of battery processing, and particularly to a tape sticking mechanism and a tape sticking system. Background Art

[0002] During the battery production process, it is necessary to perform an insulating film wrapping treatment on the outer shell of the battery cell (the outer shell is a metal outer shell) to better protect the battery cell during transportation and circulation, so as to achieve the effects of dust prevention and waterproofing, and at the same time prepare for subsequent hot pressing and encapsulation.

[0003] However, due to differences in the film wrapping process, there may be a risk of metal exposure. Summary of the Invention

[0004] In view of this, this application provides a tape sticking mechanism and a tape sticking system to reduce the risk of metal exposure in the film wrapping process.

[0005] In a first aspect, this application provides a tape sticking mechanism for sticking tape on the surface of a battery cell, where the battery cell has a cuboid structure; the tape sticking mechanism includes an adsorption component configured to be able to adsorb the film and fit the film to the first edge of the battery cell.

[0006] For the tape sticking mechanism of this application, the adsorption component is configured to be able to adsorb the film and fit the film to the first edge of the battery cell, providing insulation protection for the first edge of the battery cell and reducing the risk of metal exposure of the first edge in the film wrapping process. At the same time, by using the tape sticking mechanism to stick tape on the first edge of the battery cell, automatic encapsulation of the first edge of the battery cell is achieved, realizing the automation of the entire film wrapping process, improving the degree of automation, and facilitating the improvement of production line efficiency.

[0007] In one embodiment, it further includes a tape feeding component and a tape cutting component. The tape feeding component is configured to release the tape, and the tape cutting component is configured to cut the tape to form the film. Through the cooperation of the tape feeding component and the tape cutting component, the tape is cut to form the film, which facilitates the adsorption component to adsorb the film for sticking tape on the first edge of the battery cell, realizing insulation protection for the first edge of the battery cell and reducing the risk of metal exposure in the film wrapping process.

[0008] In one embodiment, it further includes a moving component configured to transport the film formed by the tape cutting component to the adsorption component, realizing the automatic transportation of the film formed by the tape cutting component to the adsorption component, improving the degree of automation, and facilitating the improvement of production line efficiency.

[0009] In one embodiment, the moving component is arranged at the bottom of the glue cutting component, and the moving component includes a transverse moving component and a lifting component. The moving component is arranged at the bottom of the glue cutting component, which is convenient for receiving the film formed by the cutting of the glue cutting component. By making the moving component include a transverse moving component and a lifting component that move along two intersecting directions respectively, the moving component has a large moving range when carrying the film cut by the glue cutting component, which can improve the flexibility of the setting position of the adsorption component, facilitate the structural compactness of the glue pasting mechanism, and reduce the space occupied by the glue pasting mechanism.

[0010] In one embodiment, the glue cutting component includes a first positioning and clamping member, a second positioning and clamping member, and a cutting knife. Along the conveying direction of the tape, the first positioning and clamping member and the second positioning and clamping member are arranged at intervals, and the cutting knife is configured to cut off a part of the tape between the first positioning and clamping member and the second positioning and clamping member to form a film, which can realize automatic glue cutting, improve the degree of automation, and facilitate the improvement of the production line efficiency. The first positioning and clamping member and the second positioning and clamping member are used to clamp and fix a part of the tape, so that the cutting knife can cut this part of the tape. By controlling the distance between the first positioning and clamping member and the second positioning and clamping member, the size of the film formed after the cutting by the cutting knife can be controlled.

[0011] In one embodiment, a tension adjusting component is further included. The tension adjusting component is arranged on the transmission path of the tape and is located upstream of the glue cutting component. By arranging the tension adjusting component to adjust the tension of the tape, the tension of the tape during transmission is appropriate, the probability of damage to the tape during transmission is reduced, the performance of the film cut from the tape by the glue cutting component adhering to the first edge of the battery cell is maintained, and the insulation protection of the first edge is realized.

[0012] In one embodiment, a pressing component is further included. The pressing component is arranged on the transmission path of the tape. The pressing component is located upstream of the glue cutting component and downstream of the tension adjusting component, and presses the tape to maintain the fixation of a part of the tape clamped by the glue cutting component, reduce the possibility of sliding of a part of the tape clamped by the glue cutting component, keep the size of the film formed by the cutting of the glue cutting component in line with expectations, and the cut film adhering to the first edge of the battery cell can completely cover the first edge, realizing the insulation protection of the first edge.

[0013] In one embodiment, the adsorption component includes a vacuum suction cup, and the vacuum suction cup includes an adsorption surface, and the adsorption surface is configured to adsorb the film. The film is adsorbed by the vacuum suction cup, which has a simple structure and can reduce the damage to the film during the adsorption process, facilitating a better glue pasting effect.

[0014] In one embodiment, a flattening member is further included. The flattening member is arranged downstream of the adsorption component, and the flattening member is configured to flatten the film adhered to the battery cell, strengthen the tightness of the adhesion between the film and the battery cell, and achieve a better insulation protection effect on the battery cell.

[0015] In a second aspect, the present application provides a glue - sticking system for sticking glue on the surface of a battery cell. The battery cell has a cuboid structure. The battery cell includes an electrode end face, two relatively - arranged first side faces, two relatively - arranged second side faces, and a bottom face. The bottom face is relatively arranged with the electrode end face. The electrode end face includes two relatively - arranged first edges and two relatively - arranged second edges. The glue - sticking system includes a conveying assembly, a first glue - sticking mechanism, and a second glue - sticking mechanism. The conveying assembly is configured to convey the battery cell. The first glue - sticking mechanism is arranged on the conveying path of the conveying assembly. The first glue - sticking mechanism is configured to stick a first film on the first edge of the battery cell. The first glue - sticking mechanism is the glue - sticking mechanism according to any one of the first aspect. The second glue - sticking mechanism is arranged on the conveying path of the conveying assembly. The second glue - sticking mechanism is configured to stick a second film on the bottom face, the second side face, the second edge, and at least part of the first side face of the battery cell.

[0016] By sticking the first film on the first edge of the battery cell through the first glue - sticking mechanism, the insulating protection of the first edge of the battery cell is realized, and the risk of metal exposure on the first edge is reduced. The first glue - sticking mechanism combines with the second glue - sticking mechanism to stick glue on the surface of the battery cell, realizing the insulating protection of the surface of the battery cell. In addition, by sticking glue on the battery cell through the first glue - sticking mechanism and the second glue - sticking mechanism, the automatic encapsulation of the battery cell is realized, the automation of the entire encapsulation process is realized, the degree of automation is improved, and it is beneficial to improve the production line efficiency.

[0017] In one embodiment, along the conveying direction of the conveying assembly, the first glue - sticking mechanism is arranged upstream of the second glue - sticking mechanism. First, the first film is stuck on the first edge of the battery cell, and then the second film is stuck on other surfaces of the battery cell by using a "U" - shaped encapsulation process. The second film can cover part of the first film, strengthening the bonding force between the first film and the battery cell and reducing the possibility of the first film falling off.

[0018] In one embodiment, a detection assembly is further included. The detection assembly is configured to detect whether the first film is stuck on the surface of the battery cell.

[0019] In one embodiment, along the conveying direction of the conveying assembly, the detection assembly is arranged downstream of the first glue - sticking mechanism and upstream of the second glue - sticking mechanism. By setting the detection assembly to detect whether the first film is stuck on the surface of the battery cell, the situation of missing the first film on the surface of the battery cell during the production process is improved, and the control of the safety of the battery cell is strengthened.

[0020] In one embodiment, the first film is blue glue. The detection assembly includes a color sensor, which determines whether the first film is stuck by sensing the color at the first edge of the battery cell. The detection structure is simple and easy to implement, and the cost is relatively low.

[0021] In one embodiment, the adsorption assembly is disposed at one side of the top of the conveying assembly at intervals, facilitating the attachment of the first film adsorbed by the adsorption assembly to the battery cell conveyed by the conveying assembly. Description of the Drawings

[0022] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0023] Figure 1 is a schematic structural diagram of the glue - sticking mechanism provided by the embodiment of the present application;

[0024] Figure 2 is a schematic structural diagram of the glue - sticking system provided by the embodiment of the present application.

[0025] The reference numerals in the specific embodiments are as follows:

[0026] Glue - sticking mechanism 100, adsorption assembly 10, vacuum suction cup 11, adsorption surface 111, feeding assembly 20, feeding reel 21, glue - cutting assembly 30, first positioning and clamping member 31, second positioning and clamping member 32, cutting knife 33, moving assembly 40, lateral moving assembly 41, lifting assembly 42, tension adjusting assembly 50, tension lifting driving member 51, tension adjusting roller 52, glue roller 53, first connecting member 54, second connecting member 55, pressing assembly 60, pressing adjusting roller 61, glue - pressing block 62, pressing lifting driving member 63, guide roller 70, conveying assembly 200, first glue - sticking mechanism 300, second glue - sticking mechanism 400, detection assembly 500, battery cell 900. Specific Embodiments

[0027] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non - exclusive inclusion.

[0029] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is more than two, unless otherwise specifically defined.

[0030] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0032] In the description of the embodiments of the present application, the term "a plurality of" refers to more than two (including two). Similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0033] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the embodiments of the present application.

[0034] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations. During the battery production process, it is necessary to perform an insulating coating process on the outer shell of the battery cell (the outer shell is a metal shell). A commonly used process in the existing coating process is "U" - type coating.

[0035] The battery cell is in a cuboid structure. The battery cell includes an electrode end face, two relatively arranged first side faces, two relatively arranged second side faces, and a bottom face, and the bottom face is relatively arranged with the electrode end face. The electrode end face includes two relatively arranged first edges and two relatively arranged second edges, and the length of the first edge is less than or equal to the length of the second edge. The first side face is connected to the electrode end face through the first edge, and the second side face is connected to the electrode end face through the second edge.

[0036] The process of coating the battery cell with "U" - type coating is as follows: The adhesive film first contacts the bottom face of the battery cell, and then covers from the bottom face of the battery cell along the second side face of the battery cell to the electrode end face of the battery cell. At this time, the bottom face of the battery cell and the two second side faces of the battery cell are covered; since the width of the adhesive film is greater than the width of the second side face of the battery cell, there will be excess adhesive film protruding from the edge of the second side face. The excess adhesive film is divided into bendable sheets, and then these sheets are used to cover the two first side faces of the battery cell to complete the coating process. Here, the width refers to the dimension in the direction parallel to the second edge.

[0037] The applicant's research found that during the "U" - type coating process, when using the excess adhesive film after covering the bottom face and the two second side faces of the battery cell to cover the two first side faces of the battery cell, there is a risk of metal exposure at the connection between the first side face of the battery cell and the top face of the electrode (i.e., at the first edge), which affects the use of the battery.

[0038] In view of this, the present application provides an adhesive - sticking mechanism and an adhesive - sticking system to reduce the risk of metal exposure in the coating process.

[0039] The glue - sticking mechanism and glue - sticking system disclosed in the embodiments of the present application are used for sticking glue to the battery cell, and the formed battery can be used in electrical devices that use the battery as a power source or various energy storage systems that use the battery as an energy storage element. The electrical devices can be, but are not limited to, mobile phones, tablets, laptop computers, electric toys, power tools, battery cars, electric vehicles, ships, spacecraft, etc. Among them, the electric toys can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric aircraft toys, etc., and the spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.

[0040] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of the glue - sticking mechanism provided by the embodiments of the present application.

[0041] The glue - sticking mechanism 100 provided by the embodiments of the present application is configured to stick glue to the battery cell 900. Specifically, in this embodiment, the battery cell 900 has a cuboid structure; the battery cell 900 includes an electrode end face, two relatively - arranged first side faces, two relatively - arranged second side faces, and a bottom face, and the bottom face is relatively arranged with the electrode end face; the electrode end face includes two relatively - arranged first edges and two relatively - arranged second edges, the length of the first edge is less than or equal to the length of the second edge, the first side face is connected to the electrode end face through the first edge, and the second side face is connected to the electrode end face through the second edge. The glue - sticking mechanism is configured to stick glue to the first edge of the battery cell 900, and cooperate with the "U" - shaped film - wrapping process to reduce the risk of metal exposure of the first edge in the film - wrapping process. At the same time, by using the glue - sticking mechanism 100 to stick glue to the first edge of the battery cell 900, automatic encapsulation of the first edge of the battery cell 900 is realized, the automation of the entire film - wrapping process is realized, the degree of automation is improved, and it is beneficial to improve the production line efficiency.

[0042] The battery cell 900 of the present application is a component in the battery where electrochemical reactions occur. The battery cell 900 is mainly formed by winding or laminating a positive electrode sheet and a negative electrode sheet, and usually a separator is provided between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active substances constitute the main body part of the battery cell 900, and the parts of the positive electrode sheet and the negative electrode sheet without active substances respectively constitute the electrode tabs. The positive electrode tab and the negative electrode tab can be located at one end of the main body part together or at both ends of the main body part respectively. During the charge and discharge process of the battery, the positive active substance and the negative active substance react with the electrolyte, and the electrode tabs are connected to the electrode terminals to form a current loop.

[0043] The glue - sticking mechanism 100 sticks glue to the two first edges of the battery cell 900, which can be that the glue - sticking mechanism 100 sticks glue to the two first edges separately in two times.

[0044] The glue - sticking mechanism 100 includes an adsorption component 10. The adsorption component 10 is configured to be able to adsorb the film and bond the film to the battery cell 900. The adsorption component 10 in this application refers to a mechanism that can adsorb and release the film, which can be a vacuum adsorption mechanism, an electrostatic adsorption mechanism, etc. The film refers to an independent, sheet - shaped adhesive. Specifically, the adsorption component 10 is configured to be able to adsorb the film and bond the film to the first edge of the battery cell 900, providing insulation protection for the first edge of the battery cell 900 and reducing the risk of metal exposure on the first edge during the encapsulation process.

[0045] In one embodiment, the adsorption component 10 is a vacuum adsorption mechanism, specifically including a vacuum chuck 11. The vacuum chuck 11 includes an adsorption surface 111, and the adsorption surface 111 is configured to adsorb the film. Adsorbing the film through the vacuum chuck 11 has a simple structure and can reduce damage to the film during the adsorption process, facilitating a better glue - sticking effect. Optionally, the adsorption surface 111 is a flat surface. Optionally, the structure of the adsorption surface 111 is arranged in cooperation with the first edge of the battery cell 900. Specifically, the adsorption surface 111 includes a first surface and a second surface that are connected to each other. Both the first surface and the second surface are flat surfaces, and the plane where the first surface is located and the plane where the second surface is located form an angle, which is the same as the angle formed between the electrode top surface and the first side surface of the battery cell 900. When the adsorption surface 111 is aligned and glued to the first edge of the battery cell 900, the film wraps the first edge of the battery cell 900. In other embodiments, the adsorption component 10 can adsorb the film through electrostatic force. This application is not limited to using vacuum or electrostatic adsorption, as long as it can adsorb the film, and it can be designed according to specific needs.

[0046] In one embodiment, the length of the film is greater than or equal to the length of the first edge of the battery cell 900, achieving complete wrapping of the length direction of the first edge of the battery cell 900 and reducing the risk of metal exposure during the encapsulation process. Wherein, the length of the film is the dimension of the film parallel to the first edge direction.

[0047] In one embodiment, the width of the film is designed such that after the film adheres to the first edge of the battery cell 900, the width of the film covering the electrode end face of the battery cell 900 is 5 mm - 10 mm, and the width of the film covering the first side surface of the battery cell 900 is 5 mm - 10 mm, achieving complete wrapping of the length direction of the first edge of the battery cell 900 and reducing the risk of metal exposure during the encapsulation process. Wherein, the width of the film covering the electrode end face of the battery cell 900 is the dimension of the film perpendicular to the first edge direction; the width of the film covering the first side surface of the battery cell 900 is the dimension of the film perpendicular to the first edge direction.

[0048] In one embodiment, the tape pasting mechanism 100 further includes a tape feeding component 20 and a tape cutting component 30. The tape feeding component 20 is configured to release the tape, and the tape cutting component 30 is configured to cut the tape to form a film. The tape feeding component 20 refers to a component that can accommodate and release the tape. The tape cutting component 30 refers to a component that can fix the tape and cut a part of the fixed tape to form a film. Through the cooperation of the tape feeding component 20 and the tape cutting component 30, the tape is cut to form a film, which is convenient for the adsorption component 10 to adsorb the film and paste it on the first edge of the battery cell 900, realizing the insulation protection of the first edge of the battery cell 900 and reducing the risk of metal exposure in the film wrapping process. Among them, the size of the film formed by the tape cutting component 30 matches the size of the first edge of the battery cell 900 to completely wrap the first edge.

[0049] The tape feeding component 20 includes a tape reel 21, and the tape reel 21 is configured to wind multiple turns of the tape around the tape reel 21, and the tape reel 21 rotates to release the tape. By winding the tape around the tape reel 21, it is convenient for the storage of the tape and occupies a small space; the tape reel 21 releases the tape by rotating, and the tape feeding method is simple and easy to implement.

[0050] The tape cutting component 30 includes a first positioning and clamping member 31, a second positioning and clamping member 32, and a cutter 33. The first positioning and clamping member 31 refers to a component that can clamp and fix the tape. The second positioning and clamping member 32 refers to a component that can clamp and fix the tape. The cutter 33 refers to a component that can cut off the tape. The structure of the first positioning and clamping member 31 may be the same as or different from the structure of the second positioning and clamping member 32. Along the conveying direction of the tape, the first positioning and clamping member 31 and the second positioning and clamping member 32 are arranged at intervals. The cutter 33 is configured to cut off a part of the tape between the first positioning and clamping member 31 and the second positioning and clamping member 32 to form a film. By the first positioning and clamping member 31 and the second positioning and clamping member 32, the clamping and fixing of a part of the tape are realized, which is convenient for the cutter 33 to cut this part of the tape. By controlling the distance between the first positioning and clamping member 31 and the second positioning and clamping member 32, the size of the film formed after the cutter 33 cuts is controlled. Optionally, the first positioning and clamping member 31 and / or the second positioning and clamping member 32 is a finger cylinder, and the finger cylinder can achieve a good fixing effect on the tape, can reduce the damage to the tape, and has a low cost. Optionally, the first positioning and clamping member 31 and / or the second positioning and clamping member 32 is a servo pressing block.

[0051] It should be noted that, in other embodiments, the gluing mechanism 100 includes a feeding component, and the feeding component releases and delivers films directly, omitting the step of cutting to form films, simplifying the structure of the gluing mechanism 100, and reducing the complexity of the gluing mechanism 100. During the operation of the gluing mechanism 100, the adsorption component 10 may be movable, and the adsorption component 10 may move to the feeding component to adsorb the films; or the films released by the feeding component may move to the adsorption component 10 through a transport component (e.g., a conveyor belt), and the adsorption component 10 adsorbs the films.

[0052] In one embodiment, the glue sticking mechanism 100 further includes a moving component 40, which is configured to transport the film cut by the glue cutting component 30 to the adsorption component 10. The moving component 40 refers to a component that can transport the film from one position to another. By providing the moving component 40, the film cut by the glue cutting component 30 is automatically transported to the adsorption component 10, thereby improving the degree of automation and facilitating the improvement of production line efficiency.

[0053] Optionally, the moving component 40 is disposed at the bottom of the rubber cutting component 30 , that is, the moving component 40 is disposed on a side of the rubber cutting component 30 close to the ground, so as to receive the rubber sheets cut by the rubber cutting component 30 .

[0054] Optionally, the moving component 40 includes a transverse moving component 41 and a lifting component 42. The transverse moving component 41 refers to a component capable of transporting a film from one position to another position along a straight line, and the direction of movement is defined as a first direction. The lifting component 42 refers to a component capable of transporting a film from one position to another position along a straight line, and the direction of movement is defined as a second direction, which intersects with the first direction. For example, the second direction is perpendicular to the first direction. By making the moving component 40 include a transverse moving component 41 and a lifting component 42 that move along two intersecting directions respectively, the moving component 40 carries the film cut by the glue cutting component 30 with a larger range of movement, which can improve the flexibility of the setting position of the adsorption component 10, facilitate the compactness of the structure of the glue sticking mechanism 100, and reduce the space occupied by the glue sticking mechanism 100. Exemplarily, the transverse moving component 41 includes a transverse moving cylinder, which is conducive to the automation of the transverse moving component 41 and has a low cost. Exemplarily, the lifting component 42 includes a lifting cylinder, which is conducive to the automation of the lifting component 42 and has a low cost.

[0055] In one embodiment, the tape sticking mechanism 100 further includes a tension adjusting assembly 50. The tension adjusting assembly 50 is disposed on the transmission path of the tape and is located upstream of the tape cutting assembly 30. The tension adjusting assembly 50 refers to an assembly for adjusting the tension of the tape. By providing the tension adjusting assembly 50, the tension of the tape is adjusted so that the tension during the tape transmission is appropriate, reducing the probability of damage to the tape during transmission, maintaining the performance of the film cut from the tape by the tape cutting assembly 30 adhering to the first edge of the battery cell 900, and achieving insulation protection for the first edge.

[0056] The tension adjusting assembly 50 includes a tension lifting driving member 51 and a tension adjusting roller 52. The tension lifting driving member 51 refers to a driving member for driving the tension adjusting roller 52 to move. The tape passes through the tension adjusting roller 52. The tension lifting driving member 51 is configured to drive the tension adjusting roller 52 to move in a direction perpendicular to the transmission path of the tape, thereby driving a part of the tape on the tension adjusting roller 52 to move in a direction perpendicular to the transmission path of the tape, achieving the adjustment of the tape tension. It should be noted that the tension adjusting roller 52 also has the functions of guiding and flattening the tape, providing a buffer between the tape feeding assembly 20 and the tape cutting assembly 30. Optionally, the tension lifting driving member 51 includes a lifting cylinder, which is beneficial for realizing automation and has a low cost. Optionally, the material of the tension adjusting roller 52 is polyurethane, which reduces damage to the tape during the sliding process of the tape on the surface of the tension adjusting roller 52.

[0057] Exemplarily, the tension adjusting assembly 50 includes one tension adjusting roller 52. The tension lifting driving member 51 is connected to the tension adjusting roller 52 to drive the movement of this one tension adjusting roller 52 to achieve the adjustment of the tape tension.

[0058] Exemplarily, the tension adjusting assembly 50 includes two tension adjusting rollers 52. Between the two tension adjusting rollers 52, the tape also passes through a rubber roller 53, that is, the tape first passes through one tension adjusting roller 52 and the rubber roller 53, and then passes through the other tension adjusting roller 52. The center connection lines of the two tension adjusting rollers 52 and the center of the rubber roller 53 form a triangle. The tension adjusting assembly 50 further includes a first connecting member 54 and a second connecting member 55 connected to each other. The two tension adjusting rollers 52 are connected to the first connecting member 54, and the positions of the two tension adjusting rollers 52 and the first connecting member 54 are relatively fixed. The tension lifting driving member 51 is connected to the second connecting member 55. The tension lifting driving member 51 drives the first connecting member 54 to move through the second connecting member 55, thereby driving the movement of the two tension adjusting rollers 52 connected to the first connecting member 54 to achieve the adjustment of the tape tension.

[0059] In one embodiment, the tape sticking mechanism 100 further includes a pressing assembly 60. The pressing assembly 60 is disposed on the transmission path of the tape. The pressing assembly 60 is located upstream of the tape cutting assembly 30 and downstream of the tension adjusting assembly 50. The pressing assembly 60 refers to an assembly that presses the tape at a certain position before the tape cutting assembly 30 to keep the position of the tape fixed. The pressing assembly 60 is configured to press the tape when the tape cutting assembly 30 cuts the tape, maintain the fixation of the part of the tape held by the tape cutting assembly 30, reduce the possibility of the part of the tape held by the tape cutting assembly 30 from sliding, keep the size of the film cut by the tape cutting assembly 30 in line with expectations, and the cut film can completely cover the first edge of the battery cell 900 when attached to the first edge of the battery cell 900, achieving insulation protection for the first edge.

[0060] The pressing assembly 60 includes a pressing adjustment roller 61, a tape pressing block 62, and a pressing lifting driving member 63. The tape passes through the pressing adjustment roller 61. The pressing lifting driving member 63 refers to a driving member that drives the tape pressing block 62 to move. The tape pressing block 62 refers to a structure that presses the tape on the pressing adjustment roller 61. The tape pressing block 62 is correspondingly arranged with the pressing adjustment roller 61. When the tape cutting assembly 30 cuts the tape, the pressing lifting driving member 63 drives the tape pressing block 62 to tightly press the tape on the surface of the pressing adjustment roller 61, maintaining the fixation of the part of the tape held by the tape cutting assembly 30; when the tape cutting assembly 30 needs to fix another part of the tape after cutting the film, the pressing lifting driving member 63 drives the tape pressing block 62 to separate from the tape on the surface of the pressing adjustment roller 61, so that the tape can slide along its transmission path, and the tape cutting assembly 30 can hold and fix another part of the tape. It should be noted that the pressing adjustment roller 61 also has the functions of guiding and flattening the tape, providing a buffer between the feeding assembly 20 and the tape cutting assembly 30. Optionally, the pressing lifting driving member 63 includes a lifting cylinder, which is beneficial for realizing automation and has a low cost. Optionally, the material of the pressing adjustment roller 61 and / or the tape pressing block 62 is polyurethane. During the process of the tape pressing block 62 tightly pressing the tape on the surface of the pressing adjustment roller 61, damage to the tape is reduced.

[0061] In one embodiment, the tape sticking mechanism 100 further includes a flattening member (not shown in the figure), and the flattening member is disposed downstream of the adsorption assembly 10; the flattening member is configured to flatten the film stuck on the battery cell 900, strengthen the tightness of the film adhered to the battery cell 900, and achieve a better insulation protection effect on the battery cell 900. When the adsorption surface 111 of the adsorption assembly 10 is a flat surface, after the adsorption assembly 10 makes the film contact the first edge of the battery cell 900, the flattening member makes the film closely adhere to the electrode top surface and the first side surface of the battery cell 900, so as to achieve the insulation protection of the first edge of the battery cell 900. When the structure of the adsorption surface 111 of the adsorption assembly 10 is arranged in cooperation with the first edge of the battery cell 900, the adsorption assembly 10 can make the film adhere to the first edge, the electrode top surface and the first side surface of the battery cell 900, and the flattening member makes the film more closely adhere to the electrode top surface and the first side surface of the battery cell 900, so as to have a better insulation protection effect on the first edge of the battery cell 900.

[0062] In one embodiment, the tape sticking mechanism 100 further includes a plurality of guide rollers 70, and the plurality of guide rollers 70 are located on the transmission path of the tape. The tape passes through the guide rollers 70, and the tape contacts the surface of the guide rollers 70. A plurality of guide rollers 70 may be provided upstream of the tension adjusting assembly 50. A plurality of guide rollers 70 may be provided downstream of the tension adjusting assembly 50 and upstream of the pressing assembly 60. A plurality of guide rollers 70 may be provided downstream of the pressing assembly 60 and upstream of the tape cutting assembly 30. The guide rollers 70 have the functions of guiding and flattening the tape, so as to provide a buffer between the tape feeding assembly 20 and the tape cutting assembly 30. The installation position and the number of the guide rollers 70 are designed according to needs, and it is only necessary to enable the tape cutting assembly 30 to cut the tape released by the tape feeding assembly 20 to form a film. The material of the guide rollers 70 is polyurethane, which can reduce the damage to the tape during the sliding process of the tape on the surface of the guide rollers 70.

[0063] In one embodiment, the tape sticking mechanism 100 further includes a separating assembly (not shown in the figure), and the separating assembly is disposed downstream of the tape feeding assembly 20 and is configured to tear off the release paper on the tape. The separating assembly may be provided upstream of the tension adjusting assembly 50. It should be noted that the separating assembly is an optional component. If there is release paper on the tape, it is necessary to set up the separating assembly to tear off the release paper. If there is no release paper on the tape, the separating assembly can be omitted. Among them, the release paper refers to a film layer structure for protecting the tape and is easily torn off from the surface of the tape.

[0064] In a specific embodiment, the tape pasting mechanism 100 includes an adsorption component 10, a feeding component 20, a tape cutting component 30, a moving component 40, a tension adjusting component 50, a pressing component 60, and a plurality of guide rollers 70. Among them, the feeding component 20 feeds out the tape. Along the transmission path of the tape, the tension adjusting component 50 is located upstream of the pressing component 60, and the pressing component 60 is located upstream of the tape cutting component 30; the moving component 40 transports the film cut by the tape cutting component 30 to the adsorption component 10; there are two guide rollers 70 arranged between the feeding component 20 and the tension adjusting component 50, one guide roller 70 is arranged between the tension adjusting component 50 and the pressing component 60, and one guide roller 70 is arranged between the pressing component 60 and the tape cutting component 30. Using the tape pasting mechanism 100 arranged as above to paste the tape on the first edge of the battery cell 900 can achieve a good pasting effect and realize the insulation protection of the first edge of the battery cell 900.

[0065] The embodiment of the present application also provides a tape pasting system. Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of the tape pasting system provided by the embodiment of the present application.

[0066] The tape pasting system is used to paste the tape on the surface of the battery cell 900 of the battery. The battery cell 900 of the battery is in a cuboid structure. The battery cell includes an electrode end face, two relatively arranged first side faces, two relatively arranged second side faces, and a bottom face, and the bottom face is relatively arranged with the electrode end face. The electrode end face includes two relatively arranged first edges and two relatively arranged second edges, and the length of the first edge is less than or equal to the length of the second edge. The first side face is connected to the electrode end face through the first edge, and the second side face is connected to the electrode end face through the second edge.

[0067] The tape pasting system includes a conveying component 200, a first tape pasting mechanism 300, and a second tape pasting mechanism 400. The conveying component 200 is configured to convey the battery cell 900. The first tape pasting mechanism 300 is arranged on the conveying path of the conveying component 200, and the first tape pasting mechanism 300 is configured to attach a first film to the first edge of the battery cell 900; for the specific structural settings of the first tape pasting mechanism 300, reference can be made to the detailed introduction of the tape pasting mechanism 100 provided in the above embodiment, which will not be elaborated here. The second tape pasting mechanism 400 is arranged on the conveying path of the conveying component 200, and the second tape pasting mechanism 400 is configured to attach a second film to the bottom face, the second side face, the second edge, and at least part of the first side face of the battery cell 900; for the specific structural settings of the second tape pasting mechanism 400, reference can be made to the structural settings of the tape pasting mechanism adopted in the "U" - shaped film wrapping process in the prior art, which will not be elaborated here.

[0068] The first edge of the battery cell 900 is attached with a first film by the first film attaching mechanism 300, so as to achieve the insulation protection of the first edge of the battery cell 900 and reduce the risk of metal exposure on the first edge. The first film attaching mechanism 300 and the second film attaching mechanism 400 are combined to attach a film to the surface of the battery cell 900, so as to achieve the insulation protection of the surface of the battery cell 900. In addition, the first film attaching mechanism 300 and the second film attaching mechanism 400 are used to attach a film to the battery cell 900, so as to achieve the automatic encapsulation of the battery cell 900, realize the automation of the whole encapsulation process, improve the degree of automation, and facilitate the improvement of the production line efficiency.

[0069] In an embodiment, along the conveying direction of the conveying assembly 200, the first film attaching mechanism 300 is arranged upstream of the second film attaching mechanism 400. That is to say, the first edge of the battery cell 900 is first attached with a first film, and then the second film is attached to other surfaces of the battery cell 900 by using a "U"-shaped encapsulation process. The second film can cover part of the first film to strengthen the bonding force between the first film and the battery cell 900 and reduce the possibility of the first film falling off. Optionally, the second film covers the remaining surfaces of the first side of the battery cell 900 except those covered by the first film and covers at least part of the first film.

[0070] In an embodiment, the film attaching system further includes a detection assembly 500, which is configured to detect whether the first film is attached to the surface of the battery cell 900. Along the conveying direction of the conveying assembly 200, the detection assembly 500 is located downstream of the first film attaching mechanism 300. By arranging the detection assembly 500 to detect whether the first film is attached to the surface of the battery cell 900, the situation of missing attachment of the first film on the surface of the battery cell 900 during the production process is improved, and the safety control of the battery cell 900 is strengthened. The detection assembly 500 can be linked with the PLC to improve the automation of the film attaching system and the production line efficiency.

[0071] Optionally, when the first film attaching mechanism 300 is located upstream of the second film attaching mechanism 400 along the conveying direction of the conveying assembly 200, the detection assembly 500 can be arranged downstream of the first film attaching mechanism 300 and upstream of the second film attaching mechanism 400 to detect whether the first film is attached to the surface of the battery cell 900 before entering the second film attaching mechanism 400. If so, it enters the second film attaching mechanism 400; if not, it re-enters the first film attaching mechanism 300. With the above arrangement, after the battery cell 900 passes through the first film attaching mechanism 300 and the second film attaching mechanism 400, the second film on the surface of the battery cell 900 can cover part of the first film, strengthen the bonding force between the first film and the battery cell 900, and reduce the possibility of the first film falling off.

[0072] Optionally, when the first taping mechanism 300 is located upstream of the second taping mechanism 400 along the conveying direction of the conveying assembly 200, the detection assembly 500 can be arranged downstream of the second taping mechanism 400. If the detection assembly 500 detects that the first film is not attached to the surface of the battery cell 900, the battery cell 900 re-enters the first taping mechanism 300 for re-taping of the first film.

[0073] Optionally, the first film is a blue film; the detection assembly 500 includes a color sensor, which determines whether the first film is attached by sensing the color at the first edge of the battery cell 900. The detection structure is simple and easy to implement, and the cost is relatively low. Exemplarily, the detection assembly 500 includes a Keyence LR-W sensor.

[0074] In one embodiment, the taping system further includes an alarm assembly (not shown in the figure). The alarm assembly is configured to emit a warning signal according to the detection result of the detection assembly 500. Specifically, the alarm assembly is configured to emit a warning signal when the detection assembly 500 detects that the first film is not attached to the surface of the battery cell 900, which can improve the situation of the first film being missed on the surface of the battery cell 900 during the production process and strengthen the control of the safety of the battery cell 900. Among them, the warning signal includes but is not limited to a sound warning and / or a light warning.

[0075] In one embodiment, the adsorption assemblies 10 of the first taping mechanism 300 are arranged at intervals on one side of the top of the conveying assembly 200, that is, the adsorption assemblies 10 are arranged at intervals on the side of the conveying assembly 200 away from the ground. By setting the positional relationship between the adsorption assemblies 10 and the conveying assembly 200 as described above, it is convenient for the first film adsorbed by the adsorption assemblies 10 to be attached to the battery cell 900 conveyed by the conveying assembly 200.

[0076] In one embodiment, the second film is a blue film.

[0077] In a specific embodiment, the tape is unrolled at the unwinding assembly 20 of the first taping mechanism 300. The tape passes through the roller 70, and a part of the tape is clamped and fixed by the first positioning clamp 31 and the second positioning clamp 32 at the cutting assembly 30. The cutter 33 cuts off this part of the tape to form a film. The film is transported to the adsorption assembly 10 through the transverse movement assembly 41 and the lifting assembly 42 of the movement assembly 40. The adsorption assembly 10 is located at the taping station, and the conveying assembly 200 transports the battery cell 900 to the taping station. The first film adsorbed on the adsorption assembly 10 is attached to the battery cell 900. The detection assembly 500 detects the battery cell 900 after taping by the first taping mechanism 300. If the detection result is that the first film is attached to the battery cell 900, the conveying assembly 200 transports the battery cell 900 to the second taping mechanism 400.

[0078] The embodiments of the present application further provide a battery, and the coating on the surface of the battery cell housing (metal housing) of the battery is insulated and protected by using the adhesive system provided in the above embodiments. The battery disclosed in the embodiments of the present application can be used in electrical equipment that uses the battery as a power source or various energy storage systems that use the battery as an energy storage element. The electrical equipment can be, but is not limited to, mobile phones, tablets, laptop computers, electric toys, power tools, battery cars, electric vehicles, ships, spacecraft, and the like. Among them, the electric toys can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric aircraft toys, etc., and the spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.

[0079] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A gluing mechanism for gluing on the surface of the battery cell, where the battery cell is a cuboid structure. Characterized in that, It includes: An adsorption component configured to be able to adsorb the film and bond the film to the first edge of the battery cell.

2. The gluing mechanism according to claim 1, Characterized in that, It further includes a tape feeding component and a film cutting component. The tape feeding component is configured to release the tape, and the film cutting component is configured to cut the tape to form the film.

3. The gluing mechanism according to claim 2, Characterized in that, It further includes a moving component configured to transport the film formed by cutting by the film cutting component to the adsorption component.

4. The gluing mechanism according to claim 3, Characterized in that, The moving component is arranged at the bottom of the film cutting component, and the moving component includes a transverse moving component and a lifting component.

5. The gluing mechanism according to claim 2, Characterized in that, The film cutting component includes a first positioning and clamping member, a second positioning and clamping member and a cutting knife; along the conveying direction of the tape, the first positioning and clamping member and the second positioning and clamping member are arranged at intervals, and the cutting knife is configured to cut off a part of the tape between the first positioning and clamping member and the second positioning and clamping member to form the film.

6. The gluing mechanism according to claim 2, Characterized in that, It further includes a tension adjusting component arranged on the transmission path of the tape and located upstream of the film cutting component.

7. The gluing mechanism according to claim 6, Characterized in that, It further includes a pressing component arranged on the transmission path of the tape. The pressing component is located upstream of the film cutting component and downstream of the tension adjusting component.

8. The gluing mechanism according to claim 1, Characterized in that, The adsorption component includes a vacuum chuck, and the vacuum chuck includes an adsorption surface configured to adsorb the film.

9. The gluing mechanism according to claim 1, Characterized in that, It further includes a smoothing member arranged downstream of the adsorption component, and the smoothing member is configured to smooth the film attached to the battery cell.

10. A gluing system for gluing on the surface of the battery cell, where the battery cell is a cuboid structure; the battery cell includes an electrode end face, two relatively arranged first side faces, two relatively arranged second side faces and a bottom surface, and the bottom surface is arranged opposite to the electrode end face; the electrode end face includes two relatively arranged first edges and two relatively arranged second edges. Characterized in that, It includes: A conveying component configured to convey the battery cell; A first gluing mechanism arranged on the conveying path of the conveying component; The first gluing mechanism is configured to attach a first film to the first edge of the battery cell; the first gluing mechanism is the gluing mechanism according to any one of claims 1-9; A second gluing mechanism arranged on the conveying path of the conveying component; the second gluing mechanism is configured to attach a second film to the bottom surface, the second side face, the second edge and at least part of the first side face of the battery cell.

11. The gluing system according to claim 10, characterized in that, along the conveying direction of the conveying component, the first gluing mechanism is arranged upstream of the second gluing mechanism.

12. The gluing system according to claim 10 or 11, characterized in that, it further comprises a detection component configured to detect whether the first film is attached to the surface of the battery cell.

13. The gluing system according to claim 12, characterized in that, along the conveying direction of the conveying component, the detection component is arranged downstream of the first gluing mechanism and upstream of the second gluing mechanism.

14. The gluing system according to claim 12, characterized in that, the first film is a blue film, and the detection component comprises a color sensor.

15. The gluing system according to claim 10, characterized in that, the adsorption component is arranged at intervals on one side of the top of the conveying component.

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