Lithium battery rubberizing device

Abstract

The utility model discloses a kind of lithium battery gumming devices, it is related to battery processing technical field, including the clamping table for placing battery cell, gumming subassembly and smoothing subassembly;Gumming subassembly includes fixed negative pressure plate, mobile negative pressure plate and roller, adhesive tape one end is located between fixed negative pressure plate and battery cell negative pole, mobile negative pressure plate and roller are synchronous along the length direction of battery cell movement, adhesive tape is attracted by mobile negative pressure plate and passes through roller.This device is automatically pasted by gumming subassembly, and the compactness of adhesive tape is improved by smoothing subassembly, and full-automatic process improves the qualified rate of product and solves the problem that current manual frequent shutdown leads to re-pasting waste a lot of physical strength and time.

Description

Technical Field

[0001] This utility model belongs to the field of battery processing technology, and specifically relates to a lithium battery adhesive bonding device. Background Technology

[0002] Currently, the coating and adhesive application process for cylindrical batteries mainly involves heat-pressing the Mylar film on the surface of the cell and closing and applying the Mylar film on the bottom and sides. However, in actual use, the adhesive may fall off due to insufficient adhesive tape or poor closure of the Mylar film on the side of the cell. This can cause the Mylar film or the cell to rub against each other when the battery is installed, resulting in a large number of scrapped cores and seriously affecting costs.

[0003] Therefore, in order to improve the adhesive application efficiency and product qualification rate, an adhesive application device for lithium batteries is provided, which is simple in structure, quick and accurate in operation, and assists in adhesive application. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a lithium battery adhesive applicator to solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A lithium battery adhesive applicator includes a clamping platform for placing battery cells, an adhesive applicator assembly, and a smoothing assembly. The adhesive applicator assembly includes a fixed negative pressure plate, a movable negative pressure plate, and a roller. One end of the adhesive tape is located between the fixed negative pressure plate and the negative electrode of the battery cell. The movable negative pressure plate and the roller move synchronously along the length of the battery cell, and the adhesive tape passes around the roller and is adsorbed by the movable negative pressure plate.

[0007] The clamping platform is used to fix the battery cell. The fixing negative pressure plate of the adhesive application assembly adsorbs the end of the adhesive tape and attaches the end of the tape to the bottom of the battery cell. The moving negative pressure plate adsorbs the tape and moves the negative pressure plate along the length of the battery cell to pull the tape. The tape loses its suction along the direction of movement and is then pushed by the rollers to adhere to the side wall of the battery cell.

[0008] Preferably, both the fixed negative pressure plate and the movable negative pressure plate are provided with air intake holes that extend through the length of the clamping platform, and a negative pressure generating device is connected to the end of the fixed negative pressure plate and the movable negative pressure plate away from the battery cell.

[0009] The negative pressure generating device produces negative pressure, requiring less suction force from the tape. Multiple suction holes, through extended channels and multi-hole design, make the negative pressure more uniform and controllable.

[0010] Preferably, the roller is rotatably mounted on the side of the movable negative pressure plate close to the fixed negative pressure plate, and the shortest distance between the roller and the battery cell is equal to the thickness of the tape.

[0011] The rollers are mounted on the movable negative pressure plate and roll on the tape, pushing the tape to adhere more tightly to the surface of the battery cell, thus completing the initial fixation.

[0012] Preferably, the roller has a single-leaf hyperboloid shape, and the inner radius of the outer wall of the roller is the same as the radius of the side wall of the battery cell.

[0013] The roller has a single-leaf hyperboloid shape that is concave inward, and the curvature of the concavity is the same as that of the side wall of the battery cell. This makes the surface of the roller fit the surface of the battery cell, resulting in a more consistent pressing of the tape without leaving any dead corners.

[0014] Preferably, the outer wall arc length of the roller is greater than the width of the tape.

[0015] The rollers roll fully on the tape, avoiding dead corners and improving the quality of tape application.

[0016] Preferably, the inner wall of the top of the clamping platform is in contact with the outer wall of the battery cell, and the top of the clamping platform is lower than the bottom of the roller.

[0017] The inner wall of the clamping platform is attached to the outer wall of the battery cell to keep the battery cell relatively fixed, and the top of the clamping platform is lower than the bottom of the roller to avoid affecting the movement of the roller.

[0018] Preferably, the smoothing component includes a pressure plate located on the side of the battery cell closer to the tape, and the pressure plate moves toward the battery cell to push the tape to adhere tightly to the battery cell.

[0019] After the adhesive application assembly is completed and reset, the pressure plate approaches the battery cell until it is close to the tape, pressing the tape firmly onto the side wall of the battery cell. This further strengthens the adhesive application effect and prevents the tape from loosening and causing the Mylar membrane to separate when the battery cell is installed, which would further affect the quality of the battery cell.

[0020] Preferably, the pressure plate has an inwardly concave arc surface on the side closest to the battery cell, and the radius of the arc surface is equal to the radius of the battery cell.

[0021] The side of the pressure plate closest to the battery cell has an arc surface that cooperates with the battery cell, which makes the pressure plate press the tape more closely to the battery cell.

[0022] Preferably, the arc length of the pressure plate is greater than the width of the tape, the length of the pressure plate is not less than the length of the battery cell, and the top of the clamping platform is lower than the bottom of the pressure plate.

[0023] The pressure plate completely covers the tape on the sides, leaving no dead corners, so that the tape adheres tightly to the surface of the battery cell. The clamping platform is lower than the bottom of the pressure plate to prevent the pressure plate from not being able to adhere tightly to the battery cell.

[0024] This utility model proposes a lithium battery adhesive applicator that automatically applies adhesive through an adhesive applicator component and improves the tightness of the adhesive tape through a smoothing component. The fully automated process improves the product qualification rate and solves the problem of frequent manual downtime leading to a waste of a lot of physical labor and time in reapplying adhesive.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of a lithium battery adhesive applicator at the start of adhesive application according to the present invention.

[0027] Figure 2 This is a three-dimensional structural diagram of the lithium battery adhesive application device proposed in this utility model when the adhesive application is completed.

[0028] Figure 3 This is a three-dimensional structural diagram of the lithium battery adhesive applicator during smoothing.

[0029] Reference numerals: 1. Operating table; 2. Clamping table; 3. Battery cell; 4. Adhesive tape; 5. Adhesive application assembly; 51. Fixed negative pressure plate; 52. Moving negative pressure plate; 53. Suction hole; 54. Roller; 55. Linear module; 56. Guide rail; 6. Smoothing assembly; 61. Pressure plate; 62. Cylinder. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] Example 1

[0032] refer to Figures 1 to 3 The lithium battery adhesive applicator described in this embodiment includes an operating table 1, on which a clamping platform 2 for placing battery cells 3, an adhesive applicator 5, and a smoothing component 6 are installed.

[0033] The adhesive application assembly 5 includes a fixed negative pressure plate 51, a movable negative pressure plate 52, and a roller 54. Both the fixed negative pressure plate 51 and the movable negative pressure plate 52 have suction holes 53 that extend along the length of the clamping platform 2. The fixed negative pressure plate 51 and the movable negative pressure plate 52 are connected to a negative pressure generating device at the ends away from the battery cell 3. One end of the adhesive tape 4 is located between the fixed negative pressure plate 51 and the negative electrode of the battery cell 3. The movable negative pressure plate 52 and the roller 54 move synchronously along the length of the battery cell 3. The adhesive tape 4 passes around the roller 54 and is adsorbed by the movable negative pressure plate 52.

[0034] Negative pressure generating devices can include vacuum generators or negative pressure machines.

[0035] The fixed negative pressure plate 51 attaches one end of the tape 4 to the negative electrode of the battery cell 3. The moving negative pressure plate 52 moves along the traction tape 4 towards the positive electrode of the battery cell 3. The roller 54 pushes the tape 4, which has lost its adhesion, to stick tightly to the side wall of the battery cell 3.

[0036] Specifically, a linear module 55 is installed on the operating table 1. The linear module 55 is located on one side of the battery cell 3 and extends along the length of the battery cell 3. A movable negative plate 52 is installed at the movable end of the linear module 55. Guide rails 56 are installed at both ends of the linear module 55. The movable negative pressure plate 52 is slidably connected to the guide rails 56. A roller 54 is rotatably installed on the side of the movable negative pressure plate 52 close to the fixed negative pressure plate 51. The shortest distance between the roller 54 and the battery cell 3 is equal to the thickness of the tape 4. The roller 54 attaches the tape 4 to the battery cell 3.

[0037] Preferably, the roller 54 has a single-leaf hyperboloid shape, that is, the outer wall of the roller 54 is concave inward, and the inward radius of the roller 54 is the same as the radius of the side wall of the battery cell 3. This makes the surface of the roller 54 fit closely to the surface of the battery cell 3, resulting in a more secure pressing of the tape 4 without leaving any dead corners.

[0038] The outer arc length of roller 54 is greater than the width of tape 4. Roller 54 rolls fully on tape 4, avoiding dead corners and improving the quality of adhesive application.

[0039] The inner wall of the top of the clamping platform 2 is attached to the outer wall of the battery cell 3, so that the battery cell 3 remains relatively fixed.

[0040] The top of the clamping platform 2 is lower than the bottom of the roller 54 to avoid affecting the movement of the roller 54.

[0041] The smoothing component 6 includes a pressure plate 61, which is located on the side of the battery cell 3 near the tape 4. The pressure plate 61 moves toward the battery cell 3 to push the tape 4 to stick tightly to the battery cell 3.

[0042] Specifically, a cylinder 62 is installed on the operating table 1, and the pressure plate 61 is fixedly connected to the output end of the cylinder 62. The pushing direction of the output end of the cylinder 62 is perpendicular to the length direction of the battery cell 3. After the adhesive application component 5 finishes applying the adhesive, the negative pressure plate 52 and the roller 54 are moved to the outer sides of both ends of the battery cell 3, that is, they are misaligned in the moving direction of the pressure plate 61 to avoid blocking the cylinder 62 from pushing the pressure plate 61 closer to the battery cell 3.

[0043] Preferably, the pressure plate 61 has an inwardly concave arc surface on the side near the battery cell 3, with the radius of the arc surface being equal to the radius of the battery cell 3. This allows the pressure plate 61 to press the tape 4 more closely to the battery cell 3. The arc length of the pressure plate 61 is greater than the width of the tape 4, and the length of the pressure plate 61 is not less than the length of the battery cell 3. The pressure plate 61 completely covers the side of the tape 4 without leaving any dead corners, ensuring that the tape 4 is fully and tightly attached to the surface of the battery cell 3. The tops of the clamping platform 2 and the guide rail 56 are both lower than the bottom of the pressure plate 61 to avoid obstructing the travel of the pressure plate 61.

[0044] In conclusion: Figure 1 As shown, before applying the adhesive, the movable negative pressure plate 52 is flush with the adsorption end of the fixed negative pressure plate 51 and is located outside the negative electrode along the length of the battery cell 3. First, one end of the adhesive tape 4 is adsorbed onto the fixed negative pressure plate 51, and the other end is adsorbed onto the movable negative pressure plate 52 after passing around the roller 54; as shown Figure 2 As shown, the linear module 55 is then activated, driving the moving negative pressure plate 52 to move towards the positive electrode of the battery cell 3. The moving negative pressure plate 52 pulls the tape 4 towards the positive electrode of the battery cell 3. Following the direction of movement, the tape 4 loses its adhesive force and, under the rolling of the roller 54, initially adheres to the side wall of the battery cell 3. Figure 3 As shown, after the adhesive is applied, the negative pressure plate 52 is moved back to its initial position. During the reset process, the roller 54 rolls and presses the adhesive tape 4 again. After the reset, the cylinder 62 pushes the pressure plate 61 close to the battery cell 3. The pressure plate 61 pushes the adhesive tape 4 to stick tightly to the side wall of the battery cell 3.

[0045] This device automatically applies adhesive through the adhesive application component 5 and improves the tightness of the tape 4 through the smoothing component 6. The fully automated process improves the product qualification rate and solves the problem of frequent manual downtime leading to a waste of a lot of physical labor and time in reapplying adhesive.

[0046] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lithium battery adhesive applicator, characterized in that: It includes a clamping platform (2) for placing the battery cell (3), an adhesive application assembly (5) and a smoothing assembly (6); the adhesive application assembly (5) includes a fixed negative pressure plate (51), a movable negative pressure plate (52) and a roller (54), one end of the adhesive tape (4) is located between the fixed negative pressure plate (51) and the negative electrode of the battery cell (3), the movable negative pressure plate (52) and the roller (54) move synchronously along the length of the battery cell (3), and the adhesive tape (4) passes around the roller (54) and is adsorbed by the movable negative pressure plate (52).

2. The lithium battery adhesive applicator according to claim 1, characterized in that: Both the fixed negative pressure plate (51) and the movable negative pressure plate (52) are provided with air intake holes (53) that run through the length of the clamping platform (2). The fixed negative pressure plate (51) and the movable negative pressure plate (52) are connected to a negative pressure generating device at the end away from the battery cell (3).

3. The lithium battery adhesive applicator according to claim 1, characterized in that: The roller (54) is rotatably mounted on the side of the movable negative pressure plate (52) close to the fixed negative pressure plate (51), and the shortest distance between the roller (54) and the battery cell (3) is equal to the thickness of the tape (4).

4. The lithium battery adhesive applicator according to claim 2, characterized in that: The roller (54) has a single-leaf hyperboloid shape, and the radius of the outer wall of the roller (54) facing inward is the same as the radius of the side wall of the battery cell (3).

5. The lithium battery adhesive applicator according to claim 4, characterized in that: The outer arc length of the roller (54) is greater than the width of the tape (4).

6. The lithium battery adhesive applicator according to claim 5, characterized in that: The inner wall of the top of the clamping platform (2) is in contact with the outer wall of the battery cell (3), and the top of the clamping platform (2) is lower than the bottom of the roller (54).

7. The lithium battery adhesive applicator according to claim 1, characterized in that: The smoothing component (6) includes a pressure plate (61) located on the side of the cell (3) close to the tape (4). The pressure plate (61) moves toward the cell (3) to push the tape (4) to adhere to the cell (3).

8. The lithium battery adhesive applicator according to claim 7, characterized in that: The pressure plate (61) has an inwardly concave arc surface on the side near the battery cell (3), and the radius of the arc surface is equal to the radius of the battery cell (3).

9. The lithium battery adhesive applicator according to claim 8, characterized in that: The arc length of the pressure plate (61) is greater than the width of the tape (4), the length of the pressure plate (61) is not less than the length of the battery cell (3), and the top of the clamping platform (2) is lower than the bottom of the pressure plate (61).

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