Lithium battery rotary nonwoven cloth pasting mechanism

Abstract

The utility model discloses a kind of lithium battery rotary paste non-woven fabric mechanism, it relates to battery module technical field.The utility model discloses a jacking device, rotating device and material taking device, rotating device is provided on jacking device, rotating device upper portion is provided with material taking device;The rotating device includes rotating motor, rotating motor connecting end, fixed plate and bottom plate, fixed plate bottom is set in the both ends of bottom plate by gasket and rib, the upper end of fixed plate is fixed with rotating motor connecting end, rotating motor connecting end inner side is connected with rotating motor, the inner side of rotating motor is provided with battery monomer fixed clamp.The utility model structure design is reasonable, through double fixed and rotation function, battery monomer double-side non-woven fabric high-efficiency accurate attachment is realized, and adaptability is strong and good stability.

Description

Technical Field

[0001] This utility model relates to the field of battery module technology, specifically to a mechanism for rotating and attaching nonwoven fabric to a lithium battery. Background Technology

[0002] With the rapid development of new energy vehicles and energy storage systems, lithium-ion battery modules and packs are placing higher demands on the integration density, safety performance, and thermal management capabilities of individual cells. In module structures with multiple cells connected in series and parallel, a layer of functional non-woven fabric is typically attached between adjacent cells to ensure safe isolation and reliable operation. This non-woven fabric not only possesses excellent physical cushioning and insulation properties but also enhances the overall thermal balance and anomaly response capabilities of the module, making it an indispensable key auxiliary material in module design.

[0003] Specifically, the role of nonwoven fabric in the module is mainly reflected in the following aspects: Physical isolation and mechanical buffering: Lithium batteries exhibit volume expansion during charging and discharging, especially under fast charging or high-rate discharging conditions, which is particularly pronounced in high-energy-density cells (such as silicon-carbon anodes). Non-woven fabric, with its thickness and elasticity, can effectively buffer this volumetric stress, preventing scratches, dents, or even cell casing damage caused by direct friction between individual cells. Furthermore, during module structure fixing, non-woven fabric helps disperse clamping forces and localized stresses during assembly, preventing safety hazards caused by structural deformation.

[0004] Electrical insulation protection: Non-woven materials generally have high dielectric strength (breakdown voltage > 5kV / mm). Even if there are defects in the insulating coating on the surface of the cell, it can effectively block the electrical path, prevent short circuits between series cells in the high-voltage module, and improve the electrical safety level of the system.

[0005] Thermal management auxiliary function: As battery energy density increases, the issue of module thermal balance becomes increasingly prominent. The porous structure of nonwoven fabrics facilitates the penetration of heat-conducting media (such as thermally conductive adhesives or phase change materials, PCM), promoting heat exchange between cells while maintaining structural isolation, significantly reducing temperature differences (typically controlled within 5°C), and delaying the impact of localized overheating on cell lifespan. Some nonwoven fabrics made with flame-retardant substrates such as aramid can also act as a barrier to delay thermal runaway, providing additional reaction time for downstream protection systems.

[0006] Liquid leak emergency protection: In the event of a micro-leak in the battery cell, the non-woven fabric can absorb the leaked liquid immediately, preventing corrosion of nearby cells or lines, helping to slow the spread of the fault and reduce the risk of fire.

[0007] However, given the diverse structures and rapid assembly cycles of current modules, the traditional manual or semi-automatic methods of attaching non-woven fabrics present the following technical challenges: 1. Insufficient positioning accuracy; misalignment of the patch position can easily affect subsequent assembly. 2. Low efficiency, difficult to adapt to various module production lines with different sizes and structures; 3. Poor consistency: The bonding tightness varies, making it impossible to achieve high standards of consistency and yield control.

[0008] Therefore, there is an urgent need for a rotary nonwoven fabric attaching mechanism that is simple in structure, has high positioning accuracy, fast operating cycle, and is suitable for automated production lines, in order to meet the needs of efficient, safe, and consistent assembly of modern lithium battery modules. Utility Model Content

[0009] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a lithium battery rotating nonwoven fabric attaching mechanism. The mechanism has a reasonable structural design and achieves efficient and precise attachment of double-sided nonwoven fabric to battery cells through dual fixing and rotation functions. It has strong adaptability and good stability.

[0010] To achieve the above objectives, this utility model is implemented through the following technical solution: a lithium battery rotating nonwoven fabric bonding mechanism, comprising a lifting device, a rotating device, and a material picking device. The rotating device is mounted on the lifting device, and the material picking device is mounted above the rotating device. The rotating device includes a rotating motor, a rotating motor connecting end, a fixing plate, and a base plate. The bottom of the fixing plate is mounted on both ends of the base plate via pads and ribs. The upper end of the fixing plate is fixed to the rotating motor connecting end. The rotating motor is connected to the inner side of the rotating motor connecting end, and a battery cell fixing clamp is provided on the inner side of the rotating motor.

[0011] Preferably, the lifting device includes a lifting cylinder and a lifting clamp, wherein the cylinder rod of the lifting cylinder passes through a fixed plate and is connected to the lifting clamp.

[0012] Preferably, the material handling device includes a connecting plate, a gripper cylinder, a material handling gripper, and a battery pressure plate. The gripper cylinder is mounted on the connecting plate, and the lower end of the gripper cylinder is connected to the material handling gripper. The material handling gripper is also mounted on the battery pressure plate.

[0013] The external robotic arm of this invention places the battery cell to be covered with non-woven fabric into the lifting device clamp. The lifting device moves upward and fixes the battery cell through the clamps at both ends of the rotating device. With the help of the external robotic arm, the battery cell is covered with non-woven fabric on both sides. Finally, the non-woven fabric-covered battery cell is transferred to the next work station by the gripping robotic arm.

[0014] The beneficial effects of this utility model are: 1. It integrates lifting, rotating and material picking functions. The rotating device realizes the automatic flipping of battery cells and completes the double-sided non-woven fabric bonding with the external robotic arm. No manual flipping or multiple positioning is required, which greatly improves the bonding efficiency.

[0015] 2. The lifting clamp initially positions the battery cell, and the fixing clamp of the rotating device clamps it from both ends. The picking claw and the battery pressure plate form a double fixation of "side clamp + top pressure" to ensure that the battery cell does not shift during rotation and transfer, and to ensure the accurate bonding position of the non-woven fabric.

[0016] 3. The rotating device enhances the connection rigidity between the fixed plate and the base plate through ribs and pads. The rotating motor provides stable power and can be adapted to battery cells of different sizes (by adjusting the spacing of the fixing clamps), making it widely applicable.

[0017] 4. The entire process is carried out through the collaboration of mechanical structures and external robotic arms, reducing manual operation and minimizing problems such as wrinkles and misalignments in non-woven fabrics caused by human error, thereby improving product consistency. Attached Figure Description

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments; Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0019] 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.

[0020] Reference Figure 1 The specific embodiment adopts the following technical solution: a lithium battery rotating non-woven fabric bonding mechanism, including a lifting device, a rotating device and a material picking device. The rotating device is provided on the lifting device, and the material picking device is provided above the rotating device. The rotating device includes a rotating motor 1, a rotating motor connecting end 2, a fixing plate 3 and a base plate 4. The bottom of the fixing plate 3 is provided at both ends of the base plate 4 through a pad 5 and a rib 6. The upper end of the fixing plate 3 is fixed to the rotating motor connecting end 2. The rotating motor 1 is connected to the inner side of the rotating motor connecting end 2. A battery cell fixing clamp 7 is provided on the inner side of the rotating motor 1.

[0021] It is worth noting that the lifting device includes a lifting cylinder 8 and a lifting clamp 9, and the cylinder rod of the lifting cylinder 8 passes through the fixed plate 3 and is connected to the lifting clamp 9.

[0022] In addition, the material handling device includes a connecting plate 10, a gripper cylinder 11, a material handling gripper 12, and a battery pressure plate 13. The gripper cylinder 11 is mounted on the connecting plate 10, and the lower end of the gripper cylinder 11 is connected to the material handling gripper 12. The material handling gripper 12 is also mounted on the battery pressure plate 13.

[0023] The working principle of this specific implementation method is as follows: The external robotic arm places the battery cell to be covered with non-woven fabric into the lifting clamp 9 of the lifting device. The lifting cylinder 8 is activated, which pushes the lifting clamp 9 to move the battery cell upward until the battery cell is clamped by the battery cell fixing clamps 7 at both ends of the rotating device, thereby fixing the battery cell in the horizontal direction.

[0024] The rotary motor 1 drives the battery cell fixing clamp 7 to rotate via the rotary motor connection end 2, causing the battery cells to rotate synchronously (the rotation angle can be adjusted as needed, such as 180° rotation). An external robotic arm cooperates with the rotation to complete the non-woven fabric bonding operation on the front and back of the battery cells in sequence. The fixing plate 3 and the base plate 4 of the rotating device provide structural support through the pad 5 and the ribs 6 to ensure the stability of the rotation process.

[0025] After the non-woven fabric is applied, the gripper cylinder 11 of the material handling device drives the gripper 12 to close, clamping the battery cell from both sides. At the same time, the battery pressure plate 13 presses the battery cell from above to prevent it from shifting or falling off during the transfer process. Subsequently, the material handling device is connected to an external drive mechanism (such as a robotic arm) through the connecting plate 10 to transfer the battery cell with the non-woven fabric applied to the next station.

[0026] 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 mechanism for rotating and attaching nonwoven fabric to a lithium battery, characterized in that, It includes a lifting device, a rotating device and a material picking device. The lifting device is equipped with a rotating device, and the rotating device is equipped with a material picking device above the rotating device. The rotating device includes a rotating motor (1), a rotating motor connecting end (2), a fixing plate (3) and a base plate (4). The bottom of the fixing plate (3) is set at both ends of the base plate (4) through a pad (5) and a rib (6). The upper end of the fixing plate (3) is fixed to the rotating motor connecting end (2). The rotating motor (1) is connected to the inner side of the rotating motor connecting end (2). A battery cell fixing clamp (7) is provided on the inner side of the rotating motor (1).

2. The mechanism for rotating and attaching nonwoven fabric to a lithium battery according to claim 1, wherein The lifting device includes a lifting cylinder (8) and a lifting clamp (9). The cylinder rod of the lifting cylinder (8) passes through the fixed plate (3) and is connected to the lifting clamp (9).

3. The mechanism for rotating and attaching nonwoven fabric to a lithium battery according to claim 1, wherein The material handling device includes a connecting plate (10), a gripper cylinder (11), a material handling gripper (12), and a battery pressure plate (13). The gripper cylinder (11) is mounted on the connecting plate (10), and the lower end of the gripper cylinder (11) is connected to the material handling gripper (12). The material handling gripper (12) is also mounted on the battery pressure plate (13).

Images