A device for coating and maintaining the pressure of battery cells

Abstract

This utility model provides a battery cell coating and pressure-holding device, including a frame, and a first coating mechanism and a pressure-holding mechanism sequentially arranged on the frame. The first coating mechanism includes a first upper support unit and a first lower support unit. Adjacent to the first upper support unit are first inserts for bending adhesive tape. A first rolling unit and a first air-blowing block are arranged on one side of the first lower support unit. The first rolling unit is located between the first air-blowing block and the battery cell. Air-blowing ports are provided on the first air-blowing block, facing the first rolling unit and the battery cell. The pressure-holding mechanism includes an upper pressure-holding block and a lower pressure-holding block. This coated and pressure-holding battery cell, by adding an air-blowing unit and positioning the rolling unit between the air-blowing unit and the battery cell, ensures that the initially bent adhesive tape remains bent, facilitating subsequent tape lamination, thereby improving the accuracy of the battery cell coating and pressure holding and reducing the defect rate.

Description

Technical Field

[0001] This utility model belongs to the technical field of automated adhesive application for battery cells, specifically relating to an adhesive-coated and pressure-maintaining battery cell device. Background Technology

[0002] Currently, in the field of new energy battery cell manufacturing, the adhesive application process is a crucial step in ensuring the structural stability, insulation performance, and safety of the battery cells. Its applications cover multiple core processes, including fixing the cell tabs, sealing housing seams, and filling module gaps. With the expansion of the battery cell industry and the increasing variety of cell shapes, stringent requirements are placed on the control of the adhesive tape's bending angle and the accuracy of its application position. Especially in automated adhesive application processes, precise application within confined spaces has become one of the core factors restricting the improvement of battery cell manufacturing yield. Currently, the industry uses automated adhesive application equipment. This equipment uses cylinders equipped with suction nozzles or grippers to grasp and initially apply the adhesive tape, and then uses inserts or pressure blocks to bend and press the tape firmly. However, these inserts or pressure blocks have a certain volume, which can easily interfere with the structure of the battery cell itself in a confined space. In particular, it is difficult to stably control the position of the tape after bending, which can lead to problems such as tape wrinkles and misalignment when pressing the tape. This results in a high defect rate for battery cell adhesive application and fails to improve production efficiency.

[0003] Therefore, for practitioners in this technical field, providing a technical solution for achieving precise bending and attachment of adhesive tape in a confined space has become an urgent need in the field of new energy battery cell manufacturing. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this utility model provides a glue-coating and pressure-maintaining battery cell device. This device adds an air blowing unit and positions the glue rolling unit between the air blowing unit and the battery cell to ensure that the glue paper remains bent after initial bending, facilitating subsequent glue paper pressing. This improves the accuracy of glue coating and pressure maintenance of the battery cell and reduces the defect rate.

[0005] The technical effects to be achieved by this utility model are realized through the following technical aspects: This utility model provides a device for coating and maintaining the pressure of battery cells, including... The frame, and the first adhesive coating mechanism and the pressure holding mechanism sequentially disposed on the frame; The first adhesive coating mechanism includes a first upper support unit and a first lower support unit, with a first adhesive coating station for placing the battery cell formed between the first upper support unit and the first lower support unit; a first insert knife for bending adhesive paper is provided adjacent to the first upper support unit; a first rolling adhesive unit and a first air blowing block are provided on one side of the first lower support unit, the first rolling adhesive unit is located between the first air blowing block and the battery cell, and an air blowing port is provided on the first air blowing block, with the air blowing port facing the first rolling adhesive unit and the battery cell; The pressure holding mechanism includes an upper pressure holding block and a lower pressure holding block, and a pressure holding station for placing the battery cell is formed between the upper pressure holding block and the lower pressure holding block.

[0006] In some implementations, the first upper support unit includes two symmetrically arranged first upper support components, with the first insert located between different first upper support components.

[0007] In some implementations, the first lower support unit includes two symmetrically arranged first lower support components, with the first glue rolling unit and the first air blowing unit disposed between different first lower support components.

[0008] In some implementations, two symmetrical first inserts and a first drive structure respectively connected to different first inserts are provided between the first upper support components, and the first inserts move in the vertical direction under the action of the first drive structure; The first roll adhesive unit includes two symmetrically arranged roller assemblies, which are located between different first lower support assemblies to roll the bent adhesive paper; The first air-blowing block is located between two different roller assemblies, and the first air-blowing block has two air-blowing ports symmetrically opened, with the two different air-blowing ports opening towards different roller assemblies respectively.

[0009] In some implementations, the first upper support component includes an upper support block and an upper support drive structure connected to the upper support block; The first lower support component includes a lower support block and a lower support drive structure connected to the lower support block.

[0010] In some implementations, the upper pressure holding block is connected to an upper pressure holding drive structure for driving the upper pressure holding block to move in the vertical direction, and the lower pressure holding block is connected to a lower pressure holding drive structure for driving the lower pressure holding block to move in the vertical direction.

[0011] In some implementations, the frame further includes a second adhesive coating mechanism located between the first adhesive coating mechanism and the pressure holding mechanism. The second adhesive coating mechanism includes a second insert at the upper end, the structure of which differs from that of the first insert.

[0012] In some implementations, the second adhesive coating mechanism includes a second upper support unit and a second lower support unit located below the second upper support unit, with a second adhesive coating station for placing the battery cell formed between the second upper support unit and the second lower support unit; a second insert knife for bending adhesive paper is disposed adjacent to the second upper support unit; a second rolling adhesive unit and a second air blowing block are disposed near the second lower support unit, with the second rolling adhesive unit located between the second air blowing block and the battery cell.

[0013] In some implementations, the first adhesive coating mechanism, the second adhesive coating mechanism, and the pressure holding mechanism all include a cell clamping unit. In some implementations, the cell clamping unit includes a clamping block for clamping the battery and a clamping drive structure connected to the clamping block.

[0014] In summary, this utility model has at least the following advantages: This utility model provides a coating and pressure-holding device for battery cells. This device incorporates an air-blowing unit, with a glue-rolling unit positioned between the air-blowing unit and the battery cell. During the operation of the first coating mechanism, the adhesive paper is initially bent close to the battery cell by a first insert. The first air-blowing unit blows air onto the bent portion of the adhesive paper to keep it close to the battery cell. Subsequently, the first glue-rolling unit acts on both the adhesive paper and the battery cell to achieve adhesion between them. The first air-blowing unit ensures that the initially bent adhesive paper remains bent. Because the first glue-rolling unit presses down on the adhesive paper, it reduces wrinkles and misalignment, thereby improving the accuracy of the coating and pressure-holding process and reducing the defect rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a glue-coated and pressure-maintaining battery cell device provided in Example 1; Figure 2 This is a schematic diagram of the first adhesive coating mechanism provided in Example 1; Figure 3 A schematic diagram of the pressure-holding mechanism provided in Example 1; Figure 4 This is a schematic diagram of the structure of the first upper support unit and the first inserter provided in Embodiment 2; Figure 5 This is a schematic diagram of the structure of the first upper support unit provided in Embodiment 2; Figure 6 This is a schematic diagram of the first inserter and the first drive structure provided in Embodiment 2; Figure 7 This is a schematic diagram of the structure of the first lower support unit, the first air blowing block, and the first glue rolling unit provided in Embodiment 2; Figure 8 This is a schematic diagram of the structure of a glue-coated and pressure-maintaining battery cell device provided in Example 3; Figure 9 This is a schematic diagram of the structure of the second inserter provided in Embodiment 3; Figure 10 This is a schematic diagram of the battery cell clamping unit provided in Example 3; Figure 11 This is one of the structural schematic diagrams of the initial state of the adhesive tape provided in Example 3; Figure 12 This is the second structural schematic diagram of the initial state of the adhesive tape provided in Example 3; Figure 13 This is a schematic diagram of the structure of the adhesive tape after bending, as provided in Example 3; Figure 14 This is a schematic diagram of the first adhesive coating mechanism and the battery cell provided in Example 3; Marked in the image: 100. Rack; 200, First adhesive coating mechanism; 210, First upper support unit; 211, First upper support assembly; 2111, Upper support block; 2112, Upper support drive structure; 220, First lower support unit; 221, First lower support assembly; 2211, Lower support block; 2212, Lower support drive structure; 230, First insert knife; 231, First drive structure; 240, First adhesive rolling unit; 241, Roller assembly; 250, First air blowing block; 251, Air blowing port; 300. Pressure holding mechanism; 310. Upper pressure holding block; 311. Upper pressure holding drive structure; 320. Lower pressure holding block; 321. Lower pressure holding drive structure; 400. Second adhesive coating mechanism; 410. Second inserter; 500. Cell clamping unit; 510. Clamping block; 520. Clamping drive structure; 600. Adhesive tape; 700, battery cell. Detailed Implementation

[0016] To facilitate understanding of the present invention, a more comprehensive description will be given below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0017] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0018] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0020] For ease of understanding, it should be noted that the X-axis in the graph represents the horizontal direction, the Y-axis represents the vertical direction, and the Z-axis represents the vertical direction.

[0021] Example 1: Please refer to Figures 1 to 3 This embodiment provides a coating and pressure-holding battery cell device, which helps to improve the accuracy of coating and pressure holding and reduce the defect rate.

[0022] Specifically, the glue-coating and pressure-holding battery cell equipment includes a frame 100, on which a first glue-coating mechanism 200 and a pressure-holding mechanism 300 are sequentially arranged along the working direction.

[0023] Please refer to this carefully. Figure 2The first coating mechanism 200 includes a first upper support unit 210 and a first lower support unit 220 arranged vertically opposite each other, forming a first coating station for placing the battery cell between the first upper support unit 210 and the first lower support unit 220. During operation, the clamp holding the battery cell is located at the first coating station, and the first upper support unit 210 and the first lower support unit 220 abut against the upper and lower sides of the battery cell respectively to limit the battery cell.

[0024] The first upper support unit 210 is adjacent to a first insert 230, which is used to bend adhesive tape. Specifically, the upper surface of the battery cell on the fixture is usually pre-adheded with adhesive tape arranged along a single plane, with a portion of the adhesive tape extending beyond the upper surface of the battery cell. During operation, the first insert 230 moves downward, bending the portion of the adhesive tape extending beyond the surface of the battery cell by 90°, thereby bringing the bent portion of the adhesive tape closer to the inner side of the battery cell.

[0025] A first glue-rolling unit 240 and a first air-blowing block 250 are arranged in a region adjacent to the first lower support unit 220. The first glue-rolling unit 240 is located between the first air-blowing block 250 and the battery cell. The first air-blowing block 250 has an air-blowing port 251, which faces the first glue-rolling unit 240 and the battery cell. When the adhesive tape is bent and approaches the inner side of the battery cell, the first air-blowing block 250 sprays high-pressure gas onto the bent portion of the adhesive tape, keeping the bent portion close to the inner side of the battery cell. Then, the first glue-rolling unit 240 abuts against the adhesive tape position bent at 90° by the first insert 230, and continues to bend the portion extending outward at another 90°, thereby completing the initial glue coating of the battery cell.

[0026] After the initial coating is completed, the fixture is moved to position 300 of the pressure holding mechanism, which is the key reference. Figure 3 The pressure holding mechanism 300 includes an upper pressure holding block 310 and a lower pressure holding block 320, forming a pressure holding station for placing the battery cell. The upper pressure holding block 310 is connected to an upper pressure holding drive structure 311 for driving the upper pressure holding block 310 to move vertically, and the lower pressure holding block 320 is connected to a lower pressure holding drive structure 321 for driving the lower pressure holding block 320 to move vertically. When the battery cell enters the pressure holding mechanism 300, the upper pressure holding block 310 and the lower pressure holding block 320 move toward the battery cell and clamp the adhesive paper on the upper and lower sides of the battery cell respectively. After pressing and holding for a period of time, the adhesive is activated.

[0027] In this embodiment, the battery cell has a cell groove, and initially, adhesive tape is adhered to the upper surface of the cell groove. During the coating process, the adhesive tape is bent from the upper surface of the cell groove towards the inside of the cell groove, ultimately adhering to the inside of the cell groove. During operation, the first upper support unit 210 can act on the upper surface of the cell groove to fix the position of the battery cell. The first insert 230 is located inside the action area of ​​the first support unit to bend the portion of the adhesive tape protruding from the battery cell. Preferably, the first upper support unit 210 can also press the adhesive tape on the upper surface of the cell groove, fixing the battery cell while preventing the adhesive tape from easily falling off during bending.

[0028] Furthermore, in order to facilitate operations inside the cell groove, the first rolling unit 240 and the first air blowing block 250 are preferably located inside the first lower support unit 220, which acts below the cell.

[0029] Example 2: This embodiment makes further structural optimizations based on Embodiment 1. Please refer to... Figures 1-3 Based on the above, refer to Figures 4 to 7 .

[0030] To ensure the stability of the battery position during the coating process, the first upper support unit 210 preferably has two symmetrically arranged first upper support components 211, with the first insert 230 located between the different first upper support components 211. Similarly, the first lower support unit 220 includes two symmetrically arranged first lower support components 221, with the first rolling glue unit 240 and the first air blowing block 250 disposed between the different first lower support components 221.

[0031] In this embodiment, the left and right sides of the cell groove need to be bent and fixed with adhesive tape. Therefore, two first inserts 230 are symmetrically arranged between the first upper support components 211. Each first insert 230 is connected to a first drive structure 231, and the first inserts 230 move vertically under the action of the first drive structure 231.

[0032] The first roll adhesive unit 240 includes two symmetrically arranged roller assemblies 241, which are located between different first lower support assemblies 221 to roll adhesive paper on the left and right sides of the cell groove respectively.

[0033] The first air-blowing block 250 is located between two different roller assemblies 241, and the first air-blowing block 250 has two air-blowing ports 251 symmetrically opened. The two different air-blowing ports 251 are opened towards different roller assemblies 241 respectively, so that the different adhesive papers on the left and right sides are respectively bent at the inner side of the adjacent battery cell groove.

[0034] It should be further noted that the first upper support component 211 includes an upper support block 2111 and an upper support drive structure 2112 connected to the upper support block 2111; the first lower support component 221 includes a lower support block 2211 and a lower support drive structure 2212 connected to the lower support block 2211.

[0035] During operation, the battery cell with the pre-applied adhesive tape facing upwards enters the adhesive-coating and pressure-holding battery cell device. The lower support block 2211, under the action of the lower support drive structure 2212, pushes the battery cell upwards, while the upper support block 2111 moves downwards and, together with the lower support block 2211, clamps and positions the battery. The first inserter 230, under the action of the first drive structure 231, moves downwards to bend the adhesive tape by 90°. Subsequently, the lower support block 2211 resets and moves downwards, and the upper support block 2111 follows suit. Simultaneously, the first air blowing block 250 sprays high-pressure gas onto the bent portion of the adhesive tape, maintaining the bent state. After moving to a certain position, the roller assembly 241 abuts against the 90° bent adhesive tape position of the first inserter 230 and further bends the portion extending from the battery outwards by another 90°, thus completing the initial adhesive coating work on the inner side of the battery.

[0036] The battery cell, after initial coating, is moved to the pressure holding mechanism 300. The upper pressure holding block 310 and the lower pressure holding block 320 move toward the battery cell and clamp the adhesive paper on the upper and lower sides of the battery respectively. After pressing and holding for a period of time, the adhesive is activated.

[0037] Example 3: This embodiment makes further structural optimizations based on embodiment 2. Please refer to... Figures 1-7 Based on the above, refer to Figures 8 to 14 .

[0038] In this embodiment, the frame 100 also includes a second adhesive coating mechanism 400, which is located between the first adhesive coating mechanism 200 and the pressure holding mechanism 300. The second adhesive coating mechanism 400 includes a second insert 410 located at the upper end, and the structure of the second insert 410 is different from that of the first insert 230.

[0039] In this embodiment, the structural diagram of the adhesive tape 600 before bending is shown below. Figure 11 and Figure 12 As shown in the diagram, the structure after bending is as follows: Figure 13 As shown. Combined with Figures 11 to 13As can be seen, in order to adapt to the battery cell 700, the bending reference lines of different parts of the adhesive tape 600 in this embodiment are not the same, so step-by-step bending is required. In this embodiment, the first insert 230 and the second insert 410 have different structures so that the parts of the adhesive tape 600 can be bent and attached separately. Among them, the first adhesive wrapping mechanism 200 is used to bend areas a, b, and c of the adhesive tape 600, and the second adhesive wrapping mechanism 400 is used to bend area d of the adhesive tape 600. It is understood that this embodiment is not the only limitation on the adhesive wrapping and pressure-holding battery cell 700 device, and the number of adhesive wrapping mechanisms and the shape of the inserts can be adjusted in other embodiments as needed.

[0040] Specifically, the second adhesive coating mechanism 400 includes a second upper support unit and a second lower support unit located below the second upper support unit. A second adhesive coating station for placing the battery cell 700 is formed between the second upper support unit and the second lower support unit. A second insert 410 for bending the adhesive tape 600 is disposed adjacent to the second upper support unit. A second rolling unit and a second air blowing block are disposed near the second lower support unit, with the second rolling unit located between the second air blowing block and the battery cell 700. The second adhesive coating mechanism 400 is identical to the first adhesive coating mechanism 200 except for the shape of the insert; therefore, the structure of the second adhesive coating mechanism 400 can be referenced from the structural description of the first adhesive coating mechanism 200.

[0041] Furthermore, the first coating mechanism 200, the second coating mechanism 400, and the pressure holding mechanism 300 all include a cell clamping unit 500. The cell clamping unit 500 includes a clamping block 510 and a clamping drive structure 520 connected to the clamping block 510. The cell clamping unit 500 is mainly used for the initial positioning of the cell 700. During operation, the cell clamping unit 500 abuts against the top of the cell 700 through the clamping block 510, thus positioning the cell 700. In the first coating mechanism 200, the first upper support assembly 211 and the cell clamping unit 500 move downwards simultaneously, clamping and positioning the battery together with the first lower support assembly 221. In the pressure holding mechanism 300, after the cell 700 is positioned by the cell clamping unit 500, it is pressure-held by the pressure holding mechanism 300.

[0042] The above description is merely an example and illustration of the structure of this invention, and while the description is specific and detailed, it should not be construed as limiting the scope of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these obvious substitutions all fall within the protection scope of this invention.

Claims

1. A gummied pressure-maintained battery cell apparatus, characterized by, It includes a frame (100) and a first adhesive coating mechanism (200) and a pressure holding mechanism (300) sequentially disposed on the frame (100); The first adhesive coating mechanism (200) includes a first upper support unit (210) and a first lower support unit (220), and a first adhesive coating station for placing the battery cell is formed between the first upper support unit (210) and the first lower support unit (220). The first upper support unit (210) is adjacent to a first insert (230) for bending adhesive tape (600); the first lower support unit (220) is provided with a first rolling glue unit (240) and a first air blowing block (250) on one side. The first rolling glue unit (240) is located between the first air blowing block (250) and the battery cell. An air blowing port (251) is opened on the first air blowing block (250), and the air blowing port (251) faces the first rolling glue unit (240) and the battery cell. The pressure holding mechanism (300) includes an upper pressure holding block (310) and a lower pressure holding block (320), and a pressure holding station for placing the battery cell is formed between the upper pressure holding block (310) and the lower pressure holding block (320).

2. The jelly-wrapped pressure-maintained battery cell apparatus according to claim 1, characterized by, The first upper support unit (210) includes two symmetrically arranged first upper support components (211), and the first insert (230) is located between different first upper support components (211).

3. The jelly-wrapped pressure-maintained battery cell apparatus according to claim 2, characterized by, The first lower support unit (220) includes two symmetrically arranged first lower support components (221), and the first roller unit (240) and the first air blowing block (250) are disposed between different first lower support components (221).

4. The adhesive-coated and pressure-maintaining battery cell equipment according to claim 3, characterized in that, The first upper support assembly (211) is provided with two symmetrical first inserts (230) and a first drive structure (231) connected to different first inserts (230) respectively. The first inserts (230) move in the vertical direction under the action of the first drive structure (231). The first roller unit (240) includes two symmetrically arranged roller assemblies (241), which are located between different first lower support assemblies (221) to roll the bent adhesive paper (600); The first air-blowing block (250) is located between two different roller assemblies (241), and the first air-blowing block (250) has two air-blowing ports (251) symmetrically opened, with the two different air-blowing ports (251) opening toward different roller assemblies (241) respectively.

5. The adhesive-coated and pressure-maintaining battery cell equipment according to claim 3, characterized in that, The first upper support assembly (211) includes an upper support block (2111) and an upper support drive structure (2112) connected to the upper support block (2111); The first lower support assembly (221) includes a lower support block (2211) and a lower support drive structure (2212) connected to the lower support block (2211).

6. The adhesive-coated and pressure-maintaining battery cell equipment according to claim 1, characterized in that, The upper pressure block (310) is connected to an upper pressure driving structure (311) for driving the upper pressure block (310) to move in the vertical direction, and the lower pressure block (320) is connected to a lower pressure driving structure (321) for driving the lower pressure block (320) to move in the vertical direction.

7. The adhesive-coated and pressure-maintaining battery cell device according to any one of claims 1-6, characterized in that, The frame (100) also includes a second adhesive coating mechanism (400), which is located between the first adhesive coating mechanism (200) and the pressure holding mechanism (300); The second adhesive coating mechanism (400) includes a second insert (410) located at the upper end, the structure of which is different from that of the first insert (230).

8. The adhesive-coated and pressure-maintaining battery cell equipment according to claim 7, characterized in that, The second adhesive coating mechanism (400) includes a second upper support unit and a second lower support unit located below the second upper support unit, and a second adhesive coating station for placing the battery cell is formed between the second upper support unit and the second lower support unit. The second upper support unit is adjacent to the second insert knife (410) for bending the adhesive tape (600); the second lower support unit is near the second roller glue unit and the second air blowing block, the second roller glue unit being located between the second air blowing block and the battery cell.

9. The adhesive-coated and pressure-maintaining battery cell equipment according to claim 7, characterized in that, The first coating mechanism (200), the second coating mechanism (400), and the pressure holding mechanism (300) all include a cell pressing unit (500).

10. The adhesive-coated and pressure-maintaining battery cell equipment according to claim 9, characterized in that, The cell clamping unit (500) includes a clamping block (510) for clamping the battery and a clamping drive structure (520) connected to the clamping block (510).

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