Lithium battery patch device with deviation correction function

Abstract

The application discloses a lithium battery patch device with a deviation rectifying function, and relates to the technical field of patch devices.The patch device comprises a glue rolling assembly, the glue rolling assembly comprises a glue rolling wheel, the glue rolling wheel comprises a glue rolling shaft, a buffer sleeve and a wear-resistant sleeve, a plurality of first installation cavities are arranged on the glue rolling shaft, a plurality of second installation cavities are arranged on the buffer sleeve, the first installation cavities and the second installation cavities are located in the same plane, a balancing assembly is arranged in the first installation cavities, a detection assembly is arranged in the second installation cavities, and adjacent detection assemblies and balancing assemblies are electrically connected.

Description

Technical Field

[0001] This invention relates to the field of patch assembly technology, specifically a lithium battery patch assembly device with a correction function. Background Technology

[0002] With the rapid development of the new energy industry, lithium batteries, with their advantages of high energy density and long cycle life, are widely used in new energy vehicles, portable electronic devices and other fields. The market has put forward higher requirements for the production efficiency and product quality of lithium batteries. As a key link in the lithium battery packaging process, the precision of the chip mounting process directly affects the structural stability, electrical performance and safety reliability of the battery. Therefore, the performance optimization of lithium battery chip mounting equipment has become an important direction for the industry's technological upgrading.

[0003] First, in the roll bonding and compaction stage, traditional equipment often uses integrated roll bonding rollers, which lack the ability to detect and dynamically adjust the pressure on the cell surface in real time. Due to the potential for slight thickness deviations and insufficient surface flatness in lithium battery cells during production, localized excessive or insufficient pressure can easily occur when the roll bonding roller contacts the cell. This can lead to defects such as cell deformation, patch wrinkling, incomplete tape adhesion, or residual air bubbles, severely affecting product consistency. Second, in terms of anti-static treatment, existing equipment often uses a fixed-direction anti-static structure, which cannot adapt to the differences in side curvature of different lithium battery cell models. If the static charge generated on the cell surface due to friction cannot be neutralized in a timely and comprehensive manner, it will not only attract dust and impurities from the air, affecting patch cleanliness, but may also damage the precision electronic components inside the cell, causing battery performance degradation or even safety hazards.

[0004] In addition, during the adhesive application and positioning process, the traditional adhesive application mechanism has insufficient precision in adjusting the bonding force, and the adhesive pressure on both sides is prone to deviation, causing the battery cell to shift position during the application process and reducing the alignment accuracy. At the same time, some devices lack an effective correction mechanism, making it difficult to correct the slight deviation of the battery cell in real time, which further affects the product qualification rate. Summary of the Invention

[0005] The purpose of this invention is to provide a lithium battery patching device with a correction function to solve the problem of uneven patch bonding caused by varying degrees of depression on the surface of the battery cell in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A lithium battery patching device with a correction function, the patching device includes a roll adhesive assembly; The roll forming assembly includes roll forming rollers; The rubber rolling wheel includes a rubber rolling shaft, a buffer sleeve, and a wear-resistant sleeve, with the wear-resistant sleeve located on the outside of the buffer sleeve; The roller has several first mounting cavities, and the buffer sleeve has several second mounting cavities. The first mounting cavity and the second mounting cavity are located in the same plane. The first mounting cavity is equipped with a balancing component, and the second mounting cavity is equipped with a detection component. Adjacent detection and balancing components are electrically connected; The testing component adjusts the rolling pressure on the battery cell locally and dynamically by balancing the component.

[0007] The workbench serves as the primary mounting base for positioning and mounting other components. Two roller bonding assemblies are located on either side of the roller bonding area, providing a mounting base for other components via the first and second mounting cavities. The roller bonding assembly consists of a roller bonding shaft, a buffer sleeve, and a wear-resistant sleeve, arranged from the inside out. After the battery cell is transported to the designated position by the transfer assembly, the bonding process is performed, followed by roller bonding and clamping via the roller bonding shaft. Simultaneously, a detection assembly monitors the pressure at its location and outputs a signal to a balancing assembly. The balancing assembly adjusts the pressure near this location, distributing the pressure of the roller bonding assembly on the battery cell surface. More uniform pressure avoids cell deformation or patch wrinkling caused by excessive local pressure. Specifically, when the roller rolls, the wear-resistant sleeve directly contacts the cell surface, and the buffer sleeve absorbs some of the impact and vibration, reducing hard damage to the cell. The first mounting cavity on the roller shaft and the second mounting cavity on the buffer sleeve are correspondingly distributed to ensure that the detection component can capture the pressure changes in the contact area in real time. When the reaction force on the cell surface of the detection component generates a certain current signal, this current signal will be transmitted to the adjacent balancing component. The balancing component adjusts the pressure at the corresponding position of the roller roll, thereby achieving dynamic correction and ensuring the consistency of pressure during the patching process.

[0008] Furthermore, several first mounting cavities are arranged into ring shaft groups along the rubber rolling shaft, and several ring shaft groups are arranged radially on the rubber rolling shaft; The detection assembly includes a detection magnet, with a reset spring and a detection block at each end of the detection magnet, and a detection coil outside the reset spring.

[0009] The ring shaft assembly is evenly distributed along the axial direction of the rubber roller. When the rubber roller contacts the surface of the battery cell, the detection block will be subjected to the reaction force of the battery cell, pushing the detection magnet to move towards the reset spring. At this time, the reset spring is compressed, and the detection magnet is displaced within the detection coil, causing a change in the magnetic flux within the detection coil. According to the principle of electromagnetic induction, the detection coil will generate an induced current. The magnitude of the induced current is proportional to the displacement of the detection magnet, that is, proportional to the pressure on the detection block. When the rubber roller leaves the surface of the battery cell, the elastic restoring force of the reset spring will push the detection magnet and the detection block back to the initial position, waiting for the next detection.

[0010] Furthermore, several second mounting cavities are arranged into ring cylinder groups along the buffer sleeve, and several ring cylinder groups are arranged radially on the buffer sleeve; The balancing assembly includes a balancing cylinder and a balancing block.

[0011] The ring cylinders are evenly distributed along the axial direction of the buffer sleeve, corresponding one-to-one with the ring shafts on the roller roller. This ensures that each detection component can precisely cooperate with the adjacent balancing component. When the detection component outputs an induced current signal, the signal is directly transmitted to the corresponding balancing cylinder. The balancing cylinder adjusts the output air pressure according to the strength of the current signal, pushing the balancing block to move radially along the first mounting cavity. When a detection component at a certain position detects excessive pressure, its output induced current increases, and the balancing cylinder increases the air pressure, causing the balancing block to move closer to the center of the roller roller, reducing the pressure on the cell surface at that position. If the detected pressure is too low, the balancing cylinder decreases the air pressure, and the balancing block moves away from the center under its own gravity or the action of the reset mechanism, increasing the local pressure. Through this dynamic adjustment, the roller roller can always maintain uniform pressure on the cell surface during rolling, effectively avoiding chip misalignment or cell damage caused by uneven pressure distribution.

[0012] Furthermore, the patch assembly includes an adhesive application component; The adhesive application assembly includes an adhesive application mechanism; The adhesive applicator is equipped with an anti-static device, which adjusts the direction of static elimination according to the curvature of the battery cell side.

[0013] Once the battery cell is transferred to the adhesive application station, the adhesive application mechanism will precisely apply the tape to the surface of the battery cell. At the same time, the anti-static device detects the different curvatures of the side of the lithium battery cell and then adjusts the direction of static elimination.

[0014] Furthermore, the antistatic device includes a mounting plate; The mounting plate has a groove, in which a fixed motor is installed, and an ion nozzle is installed on the output end of the fixed motor.

[0015] The fixing plate is fixed to the side of the adhesive applicator. The groove on its surface provides a stable installation space for the fixing motor. When the battery cell enters the adhesive applicator station, the anti-static device fixes the motor drive output end of the ion nozzle to rotate around the side of the battery cell. The air outlet angle of the ion nozzle is adjusted so that it always maintains the optimal anti-static distance and direction with the side of the battery cell. When the side of the battery cell is a rounded transition, the ion nozzle will gradually adjust from the top edge of the battery cell to the middle curved surface position as the fixing motor rotates. This ensures that the ion air can evenly cover every area of ​​the side of the battery cell, effectively neutralizing the static charge generated by friction on the surface of the battery cell, preventing static electricity from attracting dust or damaging the internal structure of the battery cell, and ensuring the cleanliness of the patching process and the quality of the battery cell.

[0016] Furthermore, the fixing plate is also equipped with several detection devices; The detection device includes a mounting housing, inside which a laser emitter and a photoresistor are housed; The photosensitive terminal connects to the processor, which is electrically connected to the fixed motor. The mounting housing is fixed to the edge of the mounting plate, maintaining a certain distance from the ion nozzle of the anti-static device to avoid mutual interference. The laser emitter and photoresistor are located on opposite sides of the mounting housing. When the battery cell enters the adhesive application station, the laser beam emitted by the laser emitter passes through the gap between the battery cell and the adhesive application mechanism, illuminating the photoresistor. If the battery cell's position shifts, the laser beam will be partially blocked by the battery cell, resulting in a decrease in the light intensity received by the photoresistor. Consequently, its resistance value changes, causing a reduction in the current output from the photoresistor. The processor then outputs a signal to the fixed motor. The fixed motor adjusts the rotation angle of its output shaft according to changes in the current signal, thereby driving the ion nozzle to rotate in a direction that matches the curvature of the battery cell side. When the area of ​​the laser emitted by the laser emitter that is blocked by the side of the battery cell increases, the light intensity of the photoresistor decreases and the resistance value increases. After receiving this change, the processor determines the direction of curvature change of the battery cell side and then controls the fixed motor to rotate clockwise or counterclockwise, so that the air outlet of the ion nozzle always fits the curved contour of the battery cell side. This ensures that the ion air can be accurately blown to every area of ​​static electricity accumulation on the surface of the battery cell, avoiding static electricity residue in some areas due to deviation in the direction of static elimination, which would affect the chip mounting quality.

[0017] Furthermore, a support assembly is provided on the roller, and a roller cylinder is provided on one side of the support assembly. The roller cylinder is used to drive the support assembly to move.

[0018] The roller has a drive mechanism inside to drive its own rotation. When the transfer component transports the battery cell with the tape applied to it to the roller station, the piston rod of the roller cylinder will drive the support component to move according to the preset stroke, thereby moving the roller to the position where it contacts the surface of the battery cell. At this time, the roller starts to roll under the action of its own drive mechanism, compacting the tape. If there are slight differences in the thickness of the battery cell, the roller cylinder can adjust the extension length of the piston rod to change the initial contact pressure between the roller and the surface of the battery cell. With the help of the balancing component and the detection component inside the roller, dual pressure regulation is achieved to further improve the uniformity of the roller. When the detection component detects that the pressure in a certain area of ​​the battery cell is too low, in addition to the balancing component performing local pressure compensation, the roller cylinder can appropriately increase the thrust of the piston rod to slightly increase the overall pressure of the roller, ensuring that the tape in that area can fully adhere to the surface of the battery cell and avoid air bubbles or incomplete adhesion.

[0019] Furthermore, the adhesive application mechanism includes a rotary cylinder; A rotating bracket is provided on the output end of the rotating cylinder, and two centrally symmetrical adhesive-applying cylinders are provided on the rotating bracket. An adhesive-applying plate is provided on the output end of the adhesive-applying cylinder.

[0020] The output shaft of the rotary cylinder is rigidly connected to the center of the rotary bracket to ensure stability during rotation. After the battery cell is transferred to the adhesive application station and positioned, the rotary cylinder first drives the rotary bracket to rotate to a preset angle, so that the two adhesive application cylinders are aligned with the two opposite sides of the battery cell. At this time, the piston rods of the adhesive application cylinders extend synchronously, pushing the adhesive application plate closer to the surface of the battery cell until the tape on the adhesive application plate is precisely adhered to the surface of the battery cell. Since the two adhesive application cylinders are centrally symmetrically distributed, their extension speed and stroke can be synchronously adjusted by the control system to ensure that the adhesive application force on both sides of the battery cell is consistent, avoiding the battery cell position deviation caused by excessive pressure on one side. At the same time, when the battery cell position is slightly off, it can be corrected by the adhesive application plate.

[0021] Furthermore, the patch assembly includes a worktable, on which a transfer assembly and an adhesive application assembly are provided. On both sides of the transfer assembly are a loading line and an unloading line, respectively.

[0022] The loading line is used to continuously transport lithium battery cells to be plated to the designated loading position on the workbench. Its surface is equipped with several positioning grooves that match the size of the cells to ensure that the cells maintain a stable posture during transportation and will not tip over or shift. After the loading line receives the cells that have completed the plate-mounting operation, it will transport them to the next process via a conveyor belt.

[0023] Compared with the prior art, the beneficial effects of the present invention are: The detection component in the roll coating assembly can detect the contact pressure in real time. Combined with the balancing component, it can dynamically adjust the local pressure. With the assistance of the roll coating cylinder, the roll coating pressure is always uniform, effectively avoiding cell deformation and chip wrinkling. The anti-static device can adjust the direction of the ion nozzle according to the curvature of the side of the battery cell, so as to remove static electricity more thoroughly and reduce the impact of static electricity residue on the cleanliness of the patch and the quality of the battery cell. The symmetrical adhesive applicator cylinders of the adhesive applicator mechanism can ensure consistent adhesion on both sides and can also correct slightly misaligned battery cells, improving the accuracy of the applicator placement. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the workbench of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the adhesive application assembly structure of the present invention; Figure 4 for Figure 3 A magnified view of part A; Figure 5 for Figure 3 A magnified view of part B; Figure 6This is a schematic diagram of the roller structure of the present invention; Figure 7 for Figure 6 A magnified view of a portion of C; Figure 8 This is a schematic diagram of the detection device of the present invention; Figure 9 for Figure 8 A partial D-magnified view.

[0025] In the diagram: 1. Workbench; 2. Transfer assembly; 3. Glue application assembly; 4. Adhesive application assembly; 41. Adhesive application mechanism; 411. Rotary cylinder; 412. Rotating bracket; 413. Adhesive application cylinder; 414. Adhesive application plate; 42. Anti-static device; 421. Fixing plate; 4211. Groove; 422. Fixing motor; 423. Ionizing nozzle; 43. Detection device; 431. Mounting housing; 432. Laser emitter; 433. Photoresistor; 5. Rolling glue assembly. Components; 51. Rolling roller; 511. Rolling shaft; 512. Buffer sleeve; 513. Wear-resistant sleeve; 5111. First mounting cavity; 5121. Second mounting cavity; 52. Balancing assembly; 521. Balancing cylinder; 522. Balancing block; 53. Detection assembly; 531. Detection magnet; 532. Return spring; 533. Detection block; 534. Detection coil; 54. Support assembly; 55. Rolling cylinder; 6. Feeding assembly line; 7. Unloading assembly line. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example: Figures 1-9 As shown, the present invention provides a technical solution: a lithium battery patching device with a correction function, the patching device including a roller adhesive assembly 5; The roller assembly 5 includes a roller 51; The rubber roller 51 includes a rubber roller shaft 511, a buffer sleeve 512 and a wear-resistant sleeve 513, with the wear-resistant sleeve 513 located outside the buffer sleeve 512. The roller 511 is provided with a plurality of first mounting cavities 5111, and the buffer sleeve 512 is provided with a plurality of second mounting cavities 5121; The first mounting cavity 5111 and the second mounting cavity 5121 are located in the same plane. The first mounting cavity 5111 is provided with a balancing component 52 and the second mounting cavity 5121 is provided with a detection component 53. The adjacent detection component 53 and balancing component 52 are electrically connected; The detection component 52 dynamically adjusts the rolling pressure on the battery cell locally through the balancing component 52.

[0028] The workbench 1 serves as the main mounting base for positioning and mounting other components. Two roller bonding assemblies 5 are located on either side of the roller bonding area, providing mounting bases for other components via the first mounting cavity 5111 and the second mounting cavity 5121. The roller bonding wheel 51 consists of a roller bonding shaft 511, a buffer sleeve 512, and a wear-resistant sleeve 513, arranged from the inside out. After the battery cell is transported to the designated position by the transfer assembly 2, the bonding process is performed, followed by roller bonding and pressing using the roller bonding shaft 511. Simultaneously, the pressure at the location of the detection assembly 53 is detected by the detection assembly 53, and a signal is output to the balancing assembly 52. ​​The balancing assembly 52 adjusts the pressure near this location, distributing the pressure of the roller bonding wheel 51 on the surface of the battery cell. The fabric is more evenly distributed, avoiding cell deformation or patch wrinkling caused by excessive local pressure. Specifically, when the roller 51 rolls, the wear-resistant sleeve 513 directly contacts the cell surface, and the buffer sleeve 512 absorbs some of the impact and vibration, reducing hard damage to the cell. The first mounting cavity 5111 on the roller shaft 511 and the second mounting cavity 5121 on the buffer sleeve 512 are correspondingly distributed, ensuring that the detection component 53 can capture the pressure changes in the contact area in real time. When the reaction force on the cell surface of the detection component 53 is applied, a certain current signal is generated. This current signal is transmitted to the adjacent balancing component 52. The balancing component 52 adjusts the pressure at the corresponding position of the roller 51, thereby achieving dynamic correction and ensuring the consistency of pressure during the patching process.

[0029] like Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown, several first mounting cavities 5111 are arranged into ring shaft groups along the rubber roller 511, and several ring shaft groups are arranged radially on the rubber roller 511. The detection component 53 includes a detection magnet 531. A reset spring 532 and a detection block 533 are respectively provided at both ends of the detection magnet 531. A detection coil 534 is provided outside the reset spring 532.

[0030] The ring shaft assembly is evenly distributed along the axial direction of the rubber roller 511. When the rubber roller 51 contacts the surface of the battery cell, the detection block 533 will be subjected to the reaction force of the battery cell, pushing the detection magnet 531 to move towards the reset spring 532. At this time, the reset spring 532 is compressed, and the detection magnet 531 is displaced within the detection coil 534, causing a change in the magnetic flux within the detection coil 534. According to the principle of electromagnetic induction, the detection coil 534 will generate an induced current. The magnitude of the induced current is proportional to the displacement of the detection magnet 531, that is, proportional to the pressure on the detection block 533. When the rubber roller 51 leaves the surface of the battery cell, the elastic restoring force of the reset spring 532 will push the detection magnet 531 and the detection block 533 back to the initial position, waiting for the next detection.

[0031] like Figure 6 and Figure 7 As shown, several second mounting cavities 5121 are arranged into annular groups along the buffer sleeve 512, and several annular groups are arranged radially on the buffer sleeve 512. The balancing assembly 52 includes a balancing cylinder 521 and a balancing block 522.

[0032] The ring cylinders are evenly distributed along the axial direction of the buffer sleeve 512, corresponding one-to-one with the ring shafts on the roller shaft 511, ensuring that each detection component 53 can precisely cooperate with the adjacent balancing component 52. When the detection component 53 outputs an induced current signal, the signal is directly transmitted to the corresponding balancing cylinder 521. The balancing cylinder 521 adjusts the output air pressure according to the intensity of the current signal, pushing the balancing block 522 to move radially along the first mounting cavity 5111. When a detection component 53 at a certain position detects excessive pressure, its output induced current... The balancing cylinder 521 increases the air pressure, causing the balancing block 522 to move closer to the center of the roller 51, reducing the pressure on the cell surface at that position. If the pressure is detected to be too low, the balancing cylinder 521 reduces the air pressure, and the balancing block 522 moves away from the center under its own weight or the action of the reset mechanism, increasing the local pressure. Through this dynamic adjustment, the roller 51 can always maintain uniform pressure on the cell surface during rolling, effectively avoiding chip misalignment or cell damage caused by uneven pressure distribution.

[0033] like Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, the patch assembly includes an adhesive application component 4; The adhesive application assembly 4 includes an adhesive application mechanism 41; The adhesive applicator 41 is equipped with an anti-static device 42, which adjusts the anti-static direction according to the curvature of the side of the battery cell.

[0034] After the battery cell is transferred to the adhesive application station, the adhesive application mechanism 41 will accurately apply the adhesive tape to the surface of the battery cell. At the same time, the anti-static device 42 detects the different curvature of the side of the lithium battery cell and then adjusts the direction of static elimination.

[0035] like Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, the antistatic device 42 includes a fixing plate 421; The fixed plate 421 has a groove 4211, the groove 4211 has a fixed motor 422, and the output end of the fixed motor 422 has an ion nozzle 423.

[0036] The fixing plate 421 is fixed to the side of the adhesive applicator 41. The groove 4211 on its surface provides a stable installation space for the fixing motor 422. When the battery cell enters the adhesive applicator station, the anti-static device 42 fixes the motor 422 to drive the ion nozzle 423 at the output end to rotate around the side of the battery cell. The air outlet angle of the ion nozzle 423 is adjusted so that it always maintains the best anti-static distance and direction with the side of the battery cell. When the side of the battery cell is a rounded transition, the ion nozzle 423 will gradually adjust from the top edge of the battery cell to the middle curved surface position as the fixing motor 422 rotates, ensuring that the ion air can evenly cover every area of ​​the side of the battery cell, effectively neutralizing the static charge generated by friction on the surface of the battery cell, preventing static electricity from attracting dust or damaging the internal structure of the battery cell, and ensuring the cleanliness of the patching process and the quality of the battery cell.

[0037] like Figure 8 and Figure 9 As shown, the fixing plate 421 is also equipped with several detection devices 43; The detection device 43 includes a mounting housing 431, and a laser emitter 432 and a photoresistor 433 are disposed inside the mounting housing 431; The photosensitive terminal 433 is connected to the processor, which is electrically connected to the fixed motor 422. The mounting housing 431 is fixed to the edge of the fixed plate 421, maintaining a certain distance from the ion nozzle 423 of the anti-static device 42 to avoid mutual interference. The laser emitter 432 and the photoresistor 433 are located on opposite sides of the mounting housing 431. When the battery cell enters the adhesive application station, the laser beam emitted by the laser emitter 432 passes through the gap between the battery cell and the adhesive application mechanism 41 and irradiates the photoresistor 433. If the battery cell's position shifts, the laser beam will be partially blocked by the battery cell, resulting in a decrease in the light intensity received by the photoresistor 433. Its resistance value changes accordingly, causing a reduction in the current output from the photoresistor 433. Then the processor... The output signal is sent to the fixed motor 422. The fixed motor 422 adjusts the rotation angle of the output shaft according to the change of the current signal, thereby driving the ion nozzle 423 to rotate to a direction that matches the curvature of the side of the battery cell. When the area of ​​the laser emitted by the laser emitter 432 that is blocked by the side of the battery cell increases, the light intensity of the photoresistor 433 decreases and the resistance value increases. After receiving this change, the processor determines the direction of the curvature change of the side of the battery cell and then controls the fixed motor 422 to rotate clockwise or counterclockwise, so that the air outlet of the ion nozzle 423 always fits the curved contour of the side of the battery cell. This ensures that the ion air can be accurately blown to every static electricity accumulation area on the surface of the battery cell, avoiding static electricity residue in some areas due to deviation in the direction of static elimination, which would affect the chip mounting quality.

[0038] like Figures 5-7 As shown, a support assembly 54 is also provided on the roller 511, and a roller cylinder 55 is provided on one side of the support assembly 54. The roller cylinder 55 is used to drive the support assembly 54 to move.

[0039] The roller 511 has a drive mechanism inside for driving its own rotation. When the transfer assembly 2 transports the battery cell with the tape applied to the roller 511 station, the piston rod of the roller cylinder 55 will drive the support assembly 54 to move according to the preset stroke, thereby driving the roller 51 to move to the position of contact with the surface of the battery cell. At this time, the roller 51 starts to roll under the action of its own drive mechanism to compact the tape. If there is a slight difference in the thickness of the battery cell, the roller cylinder 55 can change the initial contact pressure between the roller 51 and the surface of the battery cell by adjusting the extension length of the piston rod. With the help of the balance assembly 52 and the detection assembly 53 inside the roller 51, dual pressure regulation is achieved to further improve the uniformity of the roller 51. When the detection assembly 53 detects that the pressure in a certain area of ​​the battery cell is too low, in addition to the local pressure compensation by the balance assembly 52, the roller cylinder 55 can appropriately increase the thrust of the piston rod to slightly increase the overall pressure of the roller 51, ensuring that the tape in that area can fully adhere to the surface of the battery cell and avoid air bubbles or loose adhesion.

[0040] like Figure 4 As shown, the adhesive applicator 41 includes a rotary cylinder 411; A rotating bracket 412 is provided on the output end of the rotating cylinder 411. Two centrally symmetrical adhesive-applying cylinders 413 are provided on the rotating bracket 412. An adhesive-applying plate 414 is provided on the output end of the adhesive-applying cylinder 413.

[0041] The output shaft of the rotary cylinder 411 is rigidly connected to the center position of the rotary bracket 412 to ensure stability during rotation. After the battery cell is transferred to the adhesive application station and positioned, the rotary cylinder 411 first drives the rotary bracket 412 to rotate to a preset angle, so that the two adhesive application cylinders 413 are respectively aligned with the two opposite sides of the battery cell. At this time, the piston rod of the adhesive application cylinder 413 extends synchronously, pushing the adhesive application plate 414 closer to the surface of the battery cell until the tape on the adhesive application plate 414 is precisely adhered to the surface of the battery cell. Since the two adhesive application cylinders 413 are centrally symmetrically distributed, their extension speed and stroke can be synchronously adjusted by the control system to ensure that the adhesive application force on both sides of the battery cell is consistent, avoiding the battery cell position shift due to excessive pressure on one side. At the same time, when the battery cell position is slightly off, it can be corrected by the adhesive application plate 414.

[0042] like Figure 1 As shown, the patch assembly includes a worktable 1, on which a transfer assembly 2 and an adhesive application assembly 3 are provided. On both sides of the transfer assembly 2, there are a loading line 6 and an unloading line 7, respectively.

[0043] The feeding line 6 is used to continuously transport the lithium battery cells to be patched to the designated feeding position of the workbench 1. Its surface is provided with several positioning grooves that match the size of the cells to ensure that the cells maintain a stable posture during the transport process and will not tip over or shift. After the feeding line 7 receives the cells that have completed the patching operation, it will transport them to the next process via a conveyor belt.

[0044] Working principle of the invention: First, the feeding line 6 transports the lithium battery cells to be bonded to the feeding area of ​​the workbench 1. The transfer component 2 accurately picks up the cells and transports them to the bonding station. At this time, the positioning mechanism of the bonding station performs preliminary positioning of the cells. Then, the rotating cylinder 411 of the bonding component 4 drives the rotating bracket 412 to rotate to a preset angle, so that the two centrally symmetrical bonding cylinders 413 are aligned with the opposite sides of the cells. The bonding cylinders 413 extend and push the bonding plate 414 to apply the tape to the surface of the cells. During this process, the detection device 43 of the anti-static device 42 detects the curvature of the side of the cells in real time through the laser emitter 432 and the photoresistor 433. The fixed motor 422 adjusts the direction of the ion air nozzle 423 according to the detection signal to ensure that the ion air evenly covers the surface of the cells and neutralizes static electricity. After the bonding is completed, the transfer component 2 transfers the cells to the rolling station, and the rolling cylinder 55 drives the rolling roller 5. 1. Move to the position in contact with the cell surface. The roller 511 drives the roller 51 to rotate for compaction. When the roller 51 rolls, the wear-resistant sleeve 513 contacts the cell surface, the buffer sleeve 512 absorbs the impact, and the detection block 533 of the detection component 53 is pushed by the reaction force of the cell to move the detection magnet 531. The detection coil 534 generates an induced current and transmits it to the adjacent balancing component 52. The balancing cylinder 521 adjusts the position of the balancing block 522 according to the current signal and dynamically adjusts the local pressure to make the pressure of the roller 51 on the cell surface evenly distributed. After the roller is rolled, the transfer component 2 transfers the cell to the unloading line 7 and is transported to the next process. Throughout the process, the components work together to achieve accurate correction and uniform compaction of the lithium battery cell patch through real-time detection and dynamic adjustment, effectively ensuring the patch quality and avoiding cell damage or patch defects.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lithium battery patching device with a correction function, characterized in that: The patching device includes a roller adhesive assembly (5); The roller assembly (5) includes a roller (51); The roller (51) includes a roller shaft (511), a buffer sleeve (512) and a wear-resistant sleeve (513), with the wear-resistant sleeve (513) located outside the buffer sleeve (512). The roller (511) is provided with a plurality of first mounting cavities (5111), and the buffer sleeve (512) is provided with a plurality of second mounting cavities (5121). The first mounting cavity (5111) and the second mounting cavity (5121) are located in the same plane. The first mounting cavity (5111) is provided with a balancing component (52), and the second mounting cavity (5121) is provided with a detection component (53). The adjacent detection component (53) and balancing component (52) are electrically connected; The detection component (52) dynamically adjusts the rolling pressure on the battery cell locally through the balancing component (52).

2. The lithium battery patching device with correction function according to claim 1, characterized in that: A plurality of the first mounting cavities (5111) are arranged in a ring shaft group along the roller shaft (511), and the roller shaft (511) has a plurality of ring shaft groups arranged radially; The detection component (53) includes a detection magnet (531), and a reset spring (532) and a detection block (533) are respectively provided at both ends of the detection magnet (531). A detection coil (534) is provided outside the reset spring (532).

3. A lithium battery patching device with correction function according to claim 1, characterized in that: Several second mounting cavities (5121) are arranged in annular groups along the buffer sleeve (512), and several annular groups are arranged radially in the buffer sleeve (512); The balancing assembly (52) includes a balancing cylinder (521) and a balancing block (522).

4. A lithium battery patching device with correction function according to claim 1, characterized in that: The patching device includes an adhesive application assembly (4); The adhesive application assembly (4) includes an adhesive application mechanism (41), and the adhesive application mechanism (41) is provided with an anti-static device (42). The anti-static device (42) adjusts the anti-static direction according to the curvature of the side of the battery cell.

5. A lithium battery patching device with correction function according to claim 4, characterized in that: The antistatic device (42) includes a fixing plate (421); The fixed plate (421) is provided with a groove (4211), a fixed motor (422) is provided in the groove (4211), and an ion nozzle (423) is provided on the output end of the fixed motor (422).

6. A lithium battery patching device with correction function according to claim 5, characterized in that: The fixing plate (421) is also provided with several detection devices (43); The detection device (43) includes a mounting housing (431), inside which a laser emitter (432) and a photoresistor (433) are provided.

7. A lithium battery patching device with correction function according to claim 1, characterized in that: The roller (511) is also provided with a support assembly (54), and a roller cylinder (55) is provided on one side of the support assembly (54). The roller cylinder (55) is used to drive the support assembly (54) to move.

8. A lithium battery patching device with correction function according to claim 4, characterized in that: The adhesive applicator (41) includes a rotary cylinder (411), a rotary bracket (412) is provided on the output end of the rotary cylinder (411), two centrally symmetrical adhesive applicators (413) are provided on the rotary bracket (412), and an adhesive applicator plate (414) is provided on the output end of the adhesive applicator (413).

9. A lithium battery patching device with correction function according to claim 1, characterized in that: The patch assembly includes a workbench (1), on which a transfer assembly (2) and an adhesive application assembly (3) are provided. On both sides of the transfer assembly (2) are a loading line (6) and a unloading line (7).

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