Accurate positioning device for lithium battery protective film

Abstract

The utility model discloses a lithium battery protective film accurate positioning device, which comprises a bottom plate, a support column, a fixed plate, a positioning panel, a reference block, a support plate, a push plate and a connecting block, the bottom plate is connected with the fixed plate through the support column, the connecting block is arranged at the bottom of the fixed plate, the positioning panel is arranged on the fixed plate, the bottom of the positioning panel is connected with the connecting block, and the reference block is arranged on the support plate. A supporting plate is arranged on the positioning panel, reference blocks are arranged on the left side and the front side of the supporting plate, and a push plate connected with an air cylinder is arranged in the middle of the right side and the rear side of the supporting plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the lithium battery production and manufacturing field, specifically relates to a lithium battery protection film accurate positioning device. BACKGROUND

[0002] With the wide application of lithium batteries in consumer electronics, electric vehicles and energy storage fields, the requirement for the safety performance of lithium batteries is also increasing. The lithium battery protection film (also known as the insulation protection film) is usually attached to the battery shell or the battery cell to improve the insulation, protection and safety performance of the battery. In the production process of lithium batteries, the coating process of the protection film is an important link, and the fitting accuracy directly affects the safety and reliability of the subsequent battery.

[0003] In the conventional protection film coating process, the following main steps are usually included:

[0004] 1. Release paper peeling: before coating, the release paper at the bottom of the insulation film needs to be torn off to expose the adhesive layer on the back of the protection film.

[0005] 2. Mechanical hand suction and attachment: the protection film with the release paper torn off is grabbed or sucked by an external mechanical hand or suction cup, and then moved to the surface of the battery or the specified tool position for attachment.

[0006] 3. Multi-station transfer: before and after coating, the protection film often needs to be transferred through multiple processes and multiple stations, including inspection, alignment, turning, etc. This process may cause slight slipping, deviation or deformation of the protection film.

[0007] 4. Precision requirement: the attachment precision of the lithium battery protection film is relatively high. Once the film deviates too much, not only will it affect the effective fitting area of the protection film and the battery shell or the battery cell, but also may cause the protection film to wrinkle or locally lift, thereby increasing the risk of safety failure of the battery.

[0008] However, the common coating device or automatic production line in the prior art often cannot guarantee the position accuracy of the protection film after each process due to insufficient positioning reference or unstable clamping method during multi-station transfer. Especially after tearing off the release paper, the protection film lacks the original support and is easy to deviate during movement or clamping. For lithium batteries, the internal structure and external shell shape may be complex, and once the film deviates greatly, it often leads to coating failure, which not only wastes materials but also increases production cost.

[0009] To address these issues, the protective film needs to be precisely repositioned before removing the release paper and applying the film. By incorporating a specialized alignment structure into the tooling or fixture, the protective film can be corrected before the final application, ensuring accurate alignment with the battery surface or target location. This precise positioning device also needs to meet the requirements of automated production lines, working in conjunction with peripheral equipment such as robotic arms and conveyors to reduce manual intervention and improve production efficiency.

[0010] However, existing film application fixtures or positioning devices still have shortcomings in the following aspects:

[0011] 1. Limited positioning method: Some devices rely solely on simple grippers or fixed supports for positioning, making it impossible to make multi-angle and all-round fine adjustments to the protective film.

[0012] 2. Insufficient adaptability: Due to the diversity of lithium battery dimensions and protective film specifications, it is difficult to meet the positioning requirements of different models of protective films if there is a lack of adjustable or universal structures.

[0013] 3. Difficulty in synchronizing paper tearing and positioning: During the process of tearing off the release paper, the protective film itself may be pulled by external forces. Without a suitable guiding or supporting structure, the film can easily shift or curl.

[0014] 4. Insufficient integration with automation: Currently, some positioning devices require manual intervention or alignment.

[0015] The inability to achieve seamless integration with robotic arms affects overall production efficiency.

[0016] Therefore, in order to effectively improve the bonding accuracy of lithium battery protective film, reduce the scrap rate and save production costs in actual production, there is an urgent need for a device that can accurately position the protective film before and after the release paper is removed, and that is easy for automated robotic arms or suction cups to hold. Utility Model Content

[0017] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a precise positioning device for lithium battery protective film, which can effectively solve the problems of inaccurate positioning, poor adaptability and insufficient automation in the existing technology.

[0018] To achieve the above objectives, this utility model provides the following technical solution: a precise positioning device for a lithium battery protective film, comprising a base plate, a support column, a fixing plate, a positioning panel, a reference block, a support plate, a push plate, and a connecting block. The base plate and the fixing plate are connected by the support column. A connecting block is provided at the bottom of the fixing plate. The positioning panel is provided on the fixing plate, and its bottom is connected to the connecting block. A support plate is provided on the positioning panel. Reference blocks are provided on the left and front sides of the support plate, and a push plate connected to a cylinder is provided in the middle of the right and rear sides of the support plate.

[0019] Preferably, the tray has a toothed structure.

[0020] Preferably, the pallet is made of polytetrafluoroethylene or silicone rubber.

[0021] Preferably, a protective film is placed inside the cavity of the tray.

[0022] The beneficial effects of this utility model are:

[0023] This invention significantly reduces the risk of film misalignment during multi-station transfer by performing multiple precise positioning operations on the protective film before and after paper tearing and film application. This meets the high-precision film application requirements of automated production lines, greatly improving product yield and production efficiency. In conjunction with peripheral equipment such as robotic arms and sensors, this invention provides lithium battery manufacturers with a more efficient and reliable film application solution, demonstrating promising application prospects and economic benefits. Attached Figure Description

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;

[0025] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0026] Fig. 2 This is an inverted schematic diagram of the present invention. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] Reference Figs. 1-2This specific embodiment adopts the following technical solution: A precise positioning device for lithium battery protective film includes a base plate 1, a support column 2, a fixing plate 3, a positioning panel 4, a reference block 5, a support plate 6, a push plate 7, and a connecting block 8. The base plate 1 and the fixing plate 3 are connected by the support column 2. The bottom of the fixing plate 3 is provided with the connecting block 8. The positioning panel 4 is provided on the fixing plate 3. The bottom of the positioning panel 4 is connected to the connecting block 8. The support plate 6 is provided on the positioning panel 4. The reference block 5 is provided on the left and front sides of the support plate 6. The push plate 7, which is connected to a cylinder, is provided in the middle of the right and rear sides of the support plate 6.

[0029] It is worth noting that the tray 6 has a toothed structure.

[0030] It is worth noting that the pallet 6 is made of polytetrafluoroethylene or silicone rubber.

[0031] In addition, a protective film 9 is placed inside the cavity of the tray 6.

[0032] The working principle of this specific embodiment is as follows: When the external robotic arm places the protective film 9 into the cavity of the tray 6, the toothed design of the tray 6 effectively reduces the contact area between the 3M adhesive on the bottom of the protective film and the tray, thereby reducing adhesion. The tray 6 is made of polytetrafluoroethylene or silicone rubber, which have extremely low surface energy, making it difficult for adhesives to adhere to their surface, facilitating the positioning of the protective film and subsequent operations. The cylinders on both sides drive the push plate 7 to move, and the push plate 7 cooperates with the reference block 5 to achieve precise positioning of the protective film 9. This design ensures the positional accuracy and stability of the protective film during subsequent processing or assembly.

[0033] This specific implementation method has the advantages of high precision, low adhesion, strong stability, automation compatibility and simple operation, and is suitable for the precise positioning and processing of lithium battery protective films.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium battery protection film precise positioning device, characterized in that, It includes bottom plate (1), support column (2), fixed plate (3), positioning panel (4), reference block (5), supporting plate (6), push plate (7) and connecting block (8), bottom plate (1) and fixed plate (3) are connected through support column (2), the bottom of fixed plate (3) is provided with connecting block (8), fixed plate (3) is provided with positioning panel (4), the bottom of positioning panel (4) is connected with connecting block (8), positioning panel (4) is provided with supporting plate (6), the left side and the front side of supporting plate (6) are provided with reference block (5), the right side and the rear side of supporting plate (6) are provided with push plate (7) connected with air cylinder.

2. The device for precise positioning of a protective film for lithium batteries according to claim 1, characterized in that The supporting plate (6) adopts a tooth structure.

3. The device of claim 1, wherein the device is configured to be attached to a lithium battery and to provide a precise location of the device on the lithium battery. The supporting plate (6) adopts a polytetrafluoroethylene or silicone rubber supporting plate.

4. The device of claim 1, wherein the device is configured to be attached to a lithium battery and to provide a precise location of the device on the lithium battery. A protective film (9) is placed in the cavity of the supporting plate (6). A protective film (9) is placed in the cavity of the supporting plate (6).

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