New energy lithium battery rubber coating device

Abstract

The utility model discloses a new energy lithium cell rubber coating device, including first pressure glue module, second pressure glue module and pressure glue station, the pressure glue station is located between first pressure glue module with second pressure glue module, first pressure glue module with second pressure glue module all are equipped with mounting seat, air cylinder, first slide rail subassembly, second slide rail subassembly, drive frame, first roller frame, second roller frame, first pressure roller and second pressure roller, air cylinder first slide rail subassembly with second slide rail subassembly all install in the top of mounting seat. The utility model discloses a new energy lithium cell rubber coating device, overcome the deficiency of existing lithium battery cell rubber coating equipment, it has the advantage of adapting different size electric core, pressure glue compact and high efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of new energy lithium battery manufacturing equipment, specifically relating to a new energy lithium battery coating device. Background Technology

[0002] In the production process of new energy lithium batteries, cell coating is one of the key steps to ensure battery safety. The core purpose of cell coating is to prevent short circuits between the cell and external components during subsequent assembly (such as casing and welding) and use by attaching an insulating film to the side of the cell, while also avoiding safety hazards caused by the misalignment of the internal electrode plates of the cell.

[0003] Currently, the encapsulation process for lithium battery cells mainly relies on two methods: 1. Manual Glue Coating: Operators manually apply the adhesive film to the side of the battery cell and then press it together using simple tools (such as rubber mallets and rollers). This method is extremely inefficient and has uneven pressing force, which can easily lead to the adhesive film not adhering tightly and the edges lifting up. This results in a high risk of the adhesive film falling off during subsequent use, seriously affecting the safety of the battery cell. In addition, the consistency of manual operation is poor, making it difficult to meet the needs of large-scale production.

[0004] 2. Semi-automatic / fully automatic coating equipment: Existing equipment mostly uses a fixed-gap pressure roller structure, with a cylinder driving the roller to move towards the battery cell to achieve coating. However, the gap between the pressure rollers in this type of equipment cannot be flexibly adjusted, and it can only adapt to a single size of battery cell. If the battery cell size is too large, the pressure roller may squeeze the cell, causing damage to the electrode sheet; if the battery cell size is too small, the coating force will be insufficient, and the adhesive film will not adhere firmly. In addition, some equipment only coats one side, requiring a second flipping of the battery cell to complete the coating on the other side, which is cumbersome and further reduces production efficiency. Utility Model Content

[0005] The main purpose of this utility model is to provide a new energy lithium battery coating device, which overcomes the shortcomings of existing lithium battery cell coating equipment. It has the advantages of adapting to cells of different sizes, pressing the coating tightly, and high efficiency.

[0006] To achieve the above objectives, this utility model provides a new energy lithium battery encapsulation device, including a first pressing module, a second pressing module, and a pressing station, wherein the pressing station is located between the first pressing module and the second pressing module, wherein: Both the first and second adhesive pressing modules are equipped with a mounting base, a cylinder, a first slide rail assembly, a second slide rail assembly, a drive frame, a first roller frame, a second roller frame, a first pressure roller, and a second pressure roller. The cylinder, the first slide rail assembly, and the second slide rail assembly are all mounted on the top of the mounting base. The drive frame includes a front plate, a bottom plate, a top plate, a first side plate, and a second side plate. The bottom plate is installed between the first slide rail assembly and the second slide rail assembly. The front plate is installed between the front end of the bottom plate and the front end of the top plate and is connected to the drive end of the cylinder. The first side plate is installed between the first side end of the bottom plate and the first side end of the top plate. The second side plate is installed between the second side end of the bottom plate and the second side end of the top plate. The bottom plate is provided with a first spring hanger and the top plate is provided with a second spring hanger. Both the first roller frame and the second roller frame are located between the bottom plate and the top plate and are movably installed between the first side plate and the second side plate. The first roller frame is provided with a third spring hanger and the second roller frame is provided with a fourth spring hanger. Springs are provided between the third spring hanger and the second spring hanger, and between the fourth spring hanger and the first spring hanger. The first pressure roller is installed on the first roller frame and the second pressure roller is installed on the second roller frame.

[0007] As a further preferred embodiment of the above technical solution, the mounting base is provided with a first support frame and a second support frame.

[0008] As a further preferred embodiment of the above technical solution, the first roller frame is located above the second roller frame.

[0009] As a further preferred embodiment of the above technical solution, the adhesive pressing station is used to place the battery cell.

[0010] As a further preferred embodiment of the above technical solution, the first and second pressure rollers of the first pressing module are aligned with one side of the battery cell, and the first and second pressure rollers of the second pressing module are aligned with the other side of the battery cell.

[0011] The beneficial effects of this utility model are as follows: 1. High adaptability and compatibility with multiple battery cell sizes: The roller frame and drive frame are connected by a spring, and the pressure roller can adaptively adjust the gap within the elastic range of the spring. There is no need to replace the pressure roller or adjust the equipment parameters, which solves the problem of "fixed gap and poor adaptability" of existing equipment, reduces equipment replacement costs, and improves the flexibility of the production line.

[0012] 2. Tight adhesive bonding enhances battery cell safety: The spring tension ensures that the pressure roller always applies stable pressure to the side of the battery cell, ensuring that the adhesive film adheres tightly to the battery cell without bubbles or peeling. This effectively avoids the risk of short circuits caused by the adhesive film falling off during subsequent use, thus improving the safety performance of the battery cell.

[0013] 3. High efficiency with simultaneous double-sided adhesive application: The first and second adhesive application modules are symmetrically distributed on both sides of the adhesive application station, which can simultaneously apply adhesive to both sides of the battery cell without the need for secondary flipping of the battery cell. Compared with single-sided adhesive application equipment, the adhesive application efficiency is increased by more than 100%, meeting the needs of large-scale production.

[0014] 4. Stable structure and reliable operation: The drive frame adopts a "rectangular frame" structure, combined with a linear slide rail assembly, to ensure accurate movement of the pressure roller without deviation; the mounting base is equipped with a support frame, which improves the overall rigidity of the equipment, avoids structural deformation after long-term use, and extends the service life of the equipment. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0016] Fig. 2 This is a structural schematic diagram of the first / second pressure bonding module of this utility model.

[0017] Fig. 3 This is a structural schematic diagram of the first / second pressure bonding module of this utility model.

[0018] The reference numerals in the attached drawings include: 100, first pressure bonding module; 110, mounting base; 111, first support frame; 112, second support frame; 120, cylinder; 130, first slide rail assembly; 140, second slide rail assembly; 150, drive frame; 151, front plate; 152, bottom plate; 153, top plate; 154, first side plate; 155, second side plate; 156, first spring hanging rod; 157, second spring hanging rod; 158, spring; 160, first roller frame; 161, third spring hanging rod; 170, second roller frame; 171, fourth spring hanging rod; 180, first pressure roller; 190, second pressure roller; 200, second pressure bonding module; 300, pressure bonding station; 400, battery cell. Detailed Implementation

[0019] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0020] This utility model discloses a new energy lithium battery coating device. The specific embodiments of the utility model are further described below with reference to preferred embodiments.

[0021] In the embodiments of this utility model, those skilled in the art will note that the battery cells and the like involved in this utility model can be considered as prior art.

[0022] Preferred embodiment.

[0023] like Figs. 1-3 As shown, this utility model discloses a new energy lithium battery encapsulation device, including a first pressing module 100, a second pressing module 200, and a pressing station 300, wherein the pressing station 300 is located between the first pressing module 100 and the second pressing module 200, wherein: Both the first pressure bonding module 100 and the second pressure bonding module 200 are provided with a mounting base 110, a cylinder 120, a first slide rail assembly 130, a second slide rail assembly 140, a drive frame 150, a first roller frame 160, a second roller frame 170, a first pressure roller 180, and a second pressure roller 190. The cylinder 120, the first slide rail assembly 130, and the second slide rail assembly 140 are all mounted on the top of the mounting base 110, wherein: The drive frame 150 includes a front plate 151, a bottom plate 152, a top plate 153, a first side plate 154, and a second side plate 155. The bottom plate 152 is installed between the first slide rail assembly 130 and the second slide rail assembly 140. The front plate 151 is installed between the front end of the bottom plate 152 and the front end of the top plate 153, and the front plate 151 is connected to the drive end of the cylinder 120. The first side plate 154 is installed between the first side end of the bottom plate 152 and the first side end of the top plate 153. The second side plate 155 is installed between the second side end of the bottom plate 152 and the second side end of the top plate 153. The bottom plate 152 is provided with a first spring hanger 156, and the top plate 153 is provided with a second spring hanger 157. The first roller frame 160 and the second roller frame 170 are both located between the bottom plate 152 and the top plate 153 and are movably mounted (via bearings) between the first side plate 154 and the second side plate 155. The first roller frame 160 is provided with a third spring hanger 161 and the second roller frame 170 is provided with a fourth spring hanger 171. Springs 158 are provided between the third spring hanger 161 and the second spring hanger 157, and between the fourth spring hanger 171 and the first spring hanger 156. The first pressure roller 180 is mounted on the first roller frame 160 and the second pressure roller 190 is mounted on the second roller frame 170. (When it is necessary to apply adhesive to the battery cell, adhesive film is applied to both sides of the battery cell (this can be done by a robotic arm or manually).) Then, the first and second pressing modules are activated respectively, so that the first and second pressing rollers of the first / second pressing modules move closer to the battery cell until the side of the battery cell enters between the first and second pressing rollers, thereby completing the rolling of the adhesive film and achieving complete encapsulation of the side of the battery cell, improving the safety of the side. Due to the tension of the spring, the first roller frame tilts towards the top plate and the second roller frame tilts towards the bottom plate, so the first pressing roller tilts towards the second pressing roller and the second pressing roller tilts towards the first pressing roller. Therefore, the gap between the first and second pressing rollers is usually small. When the side of the battery cell enters between the first and second pressing rollers, the gap between the first and second pressing rollers is widened until it matches the size of the side of the battery cell. The function of the spring is to make the pressing more compact and to match the battery cells of different sizes.

[0024] Specifically, the mounting base 110 is provided with a first support frame 111 and a second support frame 112.

[0025] More specifically, the first roller frame 160 is located above the second roller frame 170.

[0026] Furthermore, the adhesive bonding station 300 is used to place the battery cell 400.

[0027] Furthermore, the first pressure roller and the second pressure roller 190 of the first pressure bonding module 100 are aligned with one side of the battery cell 400, and the first pressure roller 180 and the second pressure roller 190 of the second pressure bonding module 200 are aligned with the other side of the battery cell 400.

[0028] The working process of this utility model is as follows: 1. Cell positioning and adhesive film bonding: Place the lithium battery cell to be coated in the positioning block of the adhesive pressing station (to prevent the cell from moving), and apply insulating adhesive film (such as PET insulating film) to both sides of the cell by robotic arm or manual labor. 2. Pressing module start-up: The cylinders of the first pressing module and the second pressing module are started synchronously through the control system (such as PLC). The cylinder drive end extends and drives the drive frame to move along the first and second slide rail assemblies to the pressing station. 3. Adaptive adjustment of pressure rollers: When the drive frame moves the first and second pressure rollers close to the battery cell, the side of the battery cell will first contact the two pressure rollers; as the drive frame continues to move, the battery cell will push the first pressure roller upward and the second pressure roller downward, causing the first roller frame to rotate around the bearing toward the top plate (stretching the spring between the third spring rod and the second spring rod), and the second roller frame to rotate around the bearing toward the bottom plate (stretching the spring between the fourth spring rod and the first spring rod). The gap between the two pressure rollers gradually widens until it completely matches the thickness of the side of the battery cell; 4. Roller coating: The cylinder continues to maintain driving force, and the drive frame drives the two pressure rollers to move along the length of the side of the battery cell. Under the action of spring tension, the pressure rollers are always in close contact with the side of the battery cell, and the adhesive film is rolled evenly so that the adhesive film is completely attached to the side of the battery cell without bubbles or lifting. 5. Reset and Material Retrieval: After the adhesive bonding is completed, the cylinder drive end retracts, driving the drive frame and pressure roller away from the battery cell. The spring returns to its natural state, and the gap between the two pressure rollers is reset. Finally, the coated battery cell is removed by a robot or manually and enters the next process.

[0029] It is worth mentioning that the technical features such as the battery cell involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be conventionally selected in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0030] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A new energy lithium battery coating device, characterized in that, It includes a first adhesive bonding module, a second adhesive bonding module, and an adhesive bonding station, wherein the adhesive bonding station is located between the first adhesive bonding module and the second adhesive bonding module, wherein: Both the first and second adhesive pressing modules are equipped with a mounting base, a cylinder, a first slide rail assembly, a second slide rail assembly, a drive frame, a first roller frame, a second roller frame, a first pressure roller, and a second pressure roller. The cylinder, the first slide rail assembly, and the second slide rail assembly are all mounted on the top of the mounting base. The drive frame includes a front plate, a bottom plate, a top plate, a first side plate, and a second side plate. The bottom plate is installed between the first slide rail assembly and the second slide rail assembly. The front plate is installed between the front end of the bottom plate and the front end of the top plate and is connected to the drive end of the cylinder. The first side plate is installed between the first side end of the bottom plate and the first side end of the top plate. The second side plate is installed between the second side end of the bottom plate and the second side end of the top plate. The bottom plate is provided with a first spring hanger and the top plate is provided with a second spring hanger. Both the first roller frame and the second roller frame are located between the bottom plate and the top plate and are movably installed between the first side plate and the second side plate. The first roller frame is provided with a third spring hanger and the second roller frame is provided with a fourth spring hanger. Springs are provided between the third spring hanger and the second spring hanger, and between the fourth spring hanger and the first spring hanger. The first pressure roller is installed on the first roller frame and the second pressure roller is installed on the second roller frame.

2. The new energy lithium battery coating device according to claim 1, characterized in that, The mounting base is provided with a first support frame and a second support frame.

3. The new energy lithium battery coating device according to claim 1, characterized in that, The first roller frame is located above the second roller frame.

4. The new energy lithium battery coating device according to claim 1, characterized in that, The adhesive bonding station is used to place the battery cells.

5. The new energy lithium battery coating device according to claim 1, characterized in that, The first and second pressure rollers of the first pressing module are aligned with one side of the battery cell, and the first and second pressure rollers of the second pressing module are aligned with the other side of the battery cell.

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