Roll core electrode detection and end rubbing equipment for battery cell

Abstract

The invention discloses a roll core electrode detection and end rubbing device of a battery cell, and relates to the technical field of batteries, the roll core electrode detection and end rubbing device comprises a conveying mechanism, the conveying mechanism is used for conveying a roll core; the conveying supporting mechanism is mounted on the inner side of the conveying mechanism and used for supporting the conveying mechanism; the internal defect detection mechanism is mounted on the conveying and supporting mechanism, is positioned above the conveying mechanism, and is used for detecting defects in the roll core and calibrating the position of the roll core; the kneading mechanisms are located on the two sides of the conveying mechanism and located on one side of the internal defect detection mechanism; the clamping mechanism is arranged on one side, far away from the internal defect detection mechanism, of the rubbing mechanism; and the control system is connected with the conveying mechanism, the internal defect detection mechanism, the kneading mechanism and the clamping mechanism. And through the arrangement of the control system, automation of the whole equipment can be realized, the intelligence of the equipment is improved, the investment of labor cost is reduced, and the working efficiency and the product quality are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a device for detecting and flattening the ends of a battery cell's winding electrodes. Background Technology

[0002] In the battery manufacturing industry, the battery cell is a core component, and its quality plays a decisive role in the battery's performance and lifespan. Quality inspection of the cell's winding electrodes and end-flattening treatment are key processes to ensure cell quality.

[0003] Currently, there are many problems in the inspection of battery cell core electrodes. Some manufacturers still rely on manual inspection, with workers using the naked eye and simple tools to identify defects in the electrodes. This method is not only inefficient and unable to meet the needs of large-scale production, but its accuracy is also greatly affected by human factors. Workers are prone to visual fatigue after long hours of work, resulting in a decline in their ability to identify subtle defects. Furthermore, different workers have different standards for judging defects, leading to a lack of consistency and accuracy in the inspection results. Currently, some manufacturers have introduced automated inspection equipment, but these simple optical inspection devices can only detect obvious defects on the electrode surface. They cannot detect internal defects in the electrodes, such as uneven distribution of electrode materials or damage to internal structures.

[0004] Secondly, regarding the flattening of the electrode ends in the battery cell winding process, a common method is simple mechanical extrusion, which applies pressure to the electrode ends using a fixed mold to achieve flattening. However, this method makes it difficult to precisely control the flattening force and position. If the flattening force is too weak, the electrode ends will not achieve the desired flatness, affecting the subsequent assembly and performance of the battery cell; if the force is too strong, it may damage the electrode material, altering the physical and chemical properties of the electrode, and thus affecting the electrical performance of the battery cell. Summary of the Invention

[0005] The purpose of this invention is to provide a device for detecting and flattening the ends of the wound electrodes of a battery cell, in order to solve the above-mentioned technical problems.

[0006] The technical solution adopted in this invention is as follows: A device for detecting and flattening the ends of the wound electrodes of a battery cell, comprising: A conveying mechanism for conveying the winding core; A conveying support mechanism is installed inside the conveying mechanism to support the conveying mechanism; An internal defect detection mechanism is installed on the conveying support mechanism and located above the conveying mechanism. It is used to detect defects inside the core and calibrate the position of the core. A kneading mechanism is located on both sides of the conveying mechanism and on one side of the internal defect detection mechanism; The clamping mechanism is located on the side of the kneading mechanism away from the internal defect detection mechanism; A control system is connected to the conveying mechanism, the internal defect detection mechanism, the kneading mechanism, and the clamping mechanism.

[0007] Preferably, the conveying mechanism includes a mounting base, a conveyor belt, pulleys, and a motor. The two pulleys are mounted on the two mounting bases, and the conveyor belt is sleeved on the outside of the two pulleys. The motor is provided on the side wall of one of the mounting bases, and the output end of the motor is connected to the pulley.

[0008] As a further preferred embodiment, the conveyor belt also includes clamping seats, and a plurality of clamping seats are provided on the outer wall of the conveyor belt, with an X-ray detector embedded in the middle portion of each clamping seat.

[0009] As a further preferred embodiment, the conveying support mechanism includes a support base, an H-shaped support beam, and ball bearings. Two support bases are provided at both ends of the support beam. Several mounting grooves are provided at the upper end of the horizontal plate in the middle of the support beam. Several ball bearings are provided in each mounting groove. The ball bearings extend at least partially out of the mounting groove. The mounting groove is filled with lubricating oil.

[0010] Preferably, the internal defect detection mechanism includes a protective cover, an X-ray source, and a first mounting plate. The two first mounting plates are connected to both sides of the conveying support mechanism. The protective cover is disposed on the upper end of the two first mounting plates. The X-ray source is mounted on the upper inner wall of the protective cover via a bracket. A core calibration mechanism is disposed on the two first mounting plates.

[0011] As a further preferred embodiment, the core calibration mechanism includes a first cylinder, a first fixing plate, and a push block. Each first mounting plate has a first cylinder at its upper end, the first fixing plate is provided at the output end of the first cylinder, the push block is provided on the first fixing plate, and a groove is provided on the side of the push block away from the first fixing plate.

[0012] Preferably, the kneading mechanism includes a fixed base, a second cylinder, a rotary motor, a slide rail, a slider, a sliding seat, a second fixed plate, a rotating disk, a first pressure sensor, and a kneading head assembly. The two fixed bases are installed on both sides of the conveying mechanism. The upper end of each fixed base is respectively provided with the second cylinder and the slide rail. The slider is provided on the slide rail. The upper end of the slider is provided with the sliding seat. The rotary motor is provided on one side of the sliding seat. The second fixed plate is provided on the other side of the sliding seat. The rotating disk is provided on one side of the second fixed plate. The kneading head assembly is provided on one side of the rotating disk. The first pressure sensor is provided between the rotating disk and the kneading head assembly. The output end of the second cylinder is connected to the slider. The output end of the rotary motor passes through the second fixed plate and is connected to the rotating disk. A core lifting mechanism is provided between the two fixed seats. The core lifting mechanism includes a third cylinder, a support frame, a clamping block, and a guide block. The third cylinder is provided below the conveying mechanism. The support frame is provided at the output end of the third cylinder. Two clamping blocks are provided at the upper end of the support frame. The two clamping blocks are located on both sides of the conveying mechanism. A guide block is provided on one side of each clamping block. An inclined surface is provided on the side of the guide block near the clamping block.

[0013] As a further preferred embodiment, the kneading head assembly includes a connecting plate, a third fixing plate, an electric cylinder, a kneading head, a kneading block, a top rod, a telescopic rod, and a compression spring. The connecting plate is connected to the rotating disk via the first pressure sensor. A plurality of the third fixing plates are provided on one side of the connecting plate, and a top rod is provided in the middle of one side of the connecting plate. The electric cylinder is provided on one side of the third fixing plate, and the kneading head is provided on the other side of the third fixing plate. One end of the kneading head is connected to the output end of the electric cylinder. A plurality of telescopic rods are also provided on the other side of the third fixing plate. The compression spring is sleeved on the telescopic rods. The kneading block is provided at one end of each of the telescopic rods. The kneading head passes through the kneading block, and the surface of the kneading block away from the telescopic rod is an arc-shaped surface. A CCD probe is installed on one side of the top rod.

[0014] As a further preferred embodiment, the device also includes a conductivity detection mechanism. The conductivity detection mechanism is provided on the other side of the internal defect detection mechanism. The conductivity detection mechanism includes an eddy current sensor and a sensor mounting plate. The two sensor mounting plates are provided on both sides of the conveying support mechanism, and each sensor mounting plate is provided with an eddy current sensor.

[0015] Preferably, the mechanism also includes a flattening mechanism, which is located on the side of the clamping mechanism away from the kneading mechanism. The flattening mechanism includes a cylinder mounting plate, a fourth cylinder, a pressure block, a spring, a second pressure sensor, and a sliding block. The two cylinder mounting plates are located on both sides of the conveying mechanism. Each cylinder mounting plate has a fourth cylinder on one side and a pressure block on the other side. The second pressure sensor and the sliding block are located on the inner wall of the pressure block. The two ends of the spring are connected to the second pressure sensor and the sliding block. The output end of the fourth cylinder is connected to the sliding block.

[0016] The above technical solution has the following advantages or beneficial effects: In this invention, X-ray inspection technology can penetrate deep into the core to accurately detect defects such as uneven distribution of electrode materials and internal structural damage. The X-ray source works closely with the X-ray detector embedded in the clamping seat on the outer wall of the conveyor belt to obtain clear images of the internal structure. Compared with traditional inspection methods, the detection accuracy of internal defects is greatly improved, effectively preventing defective cells from entering the next production stage and improving the overall quality of the cells.

[0017] In this invention, the eddy current sensor of the conductivity detection mechanism can quickly and accurately detect the conductivity of the core electrode, ensuring that only battery cells with conductivity that meet the standards can enter the subsequent processes, thereby further improving the quality stability of the battery cells.

[0018] In this invention, the leveling mechanism precisely controls the position of the leveling head assembly through a second cylinder, slide rail, and slider. Simultaneously, a first pressure sensor monitors the leveling force in real time, ensuring the force remains within a suitable range. This guarantees the leveling effect while preventing damage to the electrodes. After leveling, the flatness of the battery cell's core electrode ends is significantly improved, providing a better foundation for subsequent battery cell assembly and enhancing the consistency and reliability of the battery cell.

[0019] In this invention, the combination of the compression spring, telescopic rod, and flattening block within the flattening head assembly can automatically adjust according to the shape of the electrode end, enhancing the adaptability of the flattening process. The flattening mechanism performs a secondary flattening of the core end, further optimizing the flattening effect. The cooperation between the spring and the second pressure sensor ensures a smooth and moderate flattening process, enabling the battery cell core electrode end to achieve a higher degree of flatness.

[0020] In this invention, the conveying mechanism uses a motor-driven pulley to rotate the conveyor belt, enabling rapid transport of the core. Furthermore, the clamping seat on the outer wall of the conveyor belt works in conjunction with an X-ray detector to simultaneously perform internal defect detection during transport, significantly shortening the inspection time. At the same time, the close collaboration between the various inspection mechanisms and the conveying mechanism reduces the waiting time of the core between processes, improving overall inspection efficiency.

[0021] In this invention, the design of the kneading mechanism and the flattening mechanism can adjust the working parameters of the relevant components through the control system to adapt to battery cores with different outer diameters.

[0022] In this invention, the automation of the entire equipment can be achieved through the setting of the control system, thereby improving the intelligence of the equipment, reducing labor costs, and greatly improving work efficiency and product quality. Attached Figure Description

[0023] Figure 1 This invention relates to a three-dimensional device for detecting the core electrode of a battery cell and flattening its ends. Figure 1 ; Figure 2 This invention relates to a three-dimensional device for detecting the core electrode of a battery cell and flattening its ends. Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of the battery cell winding electrode detection and end flattening device in this invention. Figure 1 ; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 yes Figure 3 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the internal structure of the battery cell winding electrode detection and end flattening device in this invention. Figure 2 ; Figure 7 This is a schematic diagram of the kneading mechanism in this invention. Figure 1 ; Figure 8 yes Figure 7 Enlarged view of point C in the middle; Figure 9 This is a schematic diagram of the kneading mechanism in this invention. Figure 2 ; Figure 10 This is a schematic diagram of the flattening mechanism in this invention; Figure 11 yes Figure 10 Sectional view along the DD direction; Figure 12 This is a perspective view of the internal defect detection mechanism in this invention; Figure 13 This is a cross-sectional schematic diagram of the internal defect detection mechanism in this invention; Figure 14 This is a schematic diagram of the cooperation between the conveying mechanism and the conveying support mechanism in this invention; Figure 15 This is a schematic diagram of the conveying support mechanism in this invention; Figure 16yes Figure 15 Enlarged view of point E in the middle.

[0024] In the diagram: 1. Conveying mechanism; 101. Mounting base; 102. Conveyor belt; 103. Pulley; 104. Motor; 105. Clamping seat; 106. X-ray detector; 2. Conveying support mechanism; 201. Support base; 202. Support beam; 203. Ball bearing; 204. Mounting groove; 205. Horizontal plate; 3. Internal defect detection mechanism; 301. Protective cover; 302. X-ray source; 303. First mounting plate; 304. Bracket 305. Core calibration mechanism; 306. First cylinder; 307. First fixed plate; 308. Push block; 4. Kneading mechanism; 401. Fixed seat; 402. Second cylinder; 403. Rotary motor; 404. Slide rail; 405. Slider; 406. Sliding seat; 407. Second fixed plate; 408. Rotary disk; 409. First pressure sensor; 410. Kneading head assembly; 411. Horizontal plate; 412. Core lifting mechanism 413. Third cylinder; 414. Support frame; 415. Clamping block; 416. Guide block; 417. Connecting plate; 418. Third fixing plate; 419. Electric cylinder; 420. Flattening head; 421. Flattening block; 422. Top rod; 423. Telescopic rod; 424. Compression spring; 425. CCD probe; 5. Clamping mechanism; 501. Frame; 502. Gripper actuator; 503. Gripper; 6. Control system; 601 602. Casing; 603. Touchscreen display; 604. Alarm; 605. Power switch; 7. Conductivity detection mechanism; 706. Eddy current sensor; 707. Sensor mounting plate; 808. Flattening mechanism; 809. Cylinder mounting plate; 8000. Fourth cylinder; 801. Pressure block; 802. Spring; 803. Second pressure sensor; 804. Sliding block; 9. Six-axis robot; 10. Casing; 11. Storage box; 12. Base plate. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0026] In the description of this invention, it should be noted that terms such as "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. They are used only for the convenience of describing this invention and for 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. Therefore, they should not be construed as limitations on this invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Please see Figures 1 to 16 The diagram illustrates a preferred embodiment of a battery cell winding electrode detection and end flattening device, comprising: Conveying mechanism 1 is used to convey the winding core; in this embodiment, see... Figure 1 As shown, it also includes a six-axis robot 9. At the end of the six-axis robot 9, a core clamp and a vision recognition system are connected via a flange. The core clamp is used to hold the core, and the vision recognition system is used to detect the position of the core. When the core is transported, the six-axis robot 9 can use the clamp to hold the core and automatically place the core on the conveying mechanism 1, realizing automated core feeding, eliminating manual operation and improving work efficiency.

[0029] The conveying support mechanism 2 is installed inside the conveying mechanism 1 and is used to support the conveying mechanism 1. The conveying support mechanism 2 is mainly used to support the conveyor belt 102 in the conveying mechanism 1 to prevent the upper side of the conveyor belt 102 from becoming loose, so that the upper side of the conveyor belt 102 can always be kept on the same straight line, which facilitates subsequent fine clamping and pressing of the core.

[0030] The internal defect detection mechanism 3 is installed on the conveying support mechanism 2 and located above the conveying mechanism 1. It is used to detect defects inside the core and calibrate the position of the core. The internal defect detection mechanism 3 is mainly used to detect hidden defects such as the distribution of materials and structural damage inside the core.

[0031] The smoothing mechanism 4 is located on both sides of the conveying mechanism 1 and on one side of the internal defect detection mechanism 3; the smoothing mechanism 4 is used to smooth the surfaces of both ends of the core.

[0032] The clamping mechanism 5 is located on the side of the flattening mechanism 4 away from the internal defect detection mechanism 3; it is used to clamp the core lifting and lowering, so that the flattening mechanism 4 can flatten the surfaces of both ends of the core.

[0033] Control system 6 is connected to conveying mechanism 1, internal defect detection mechanism 3, kneading mechanism 4, and clamping mechanism 5. Control system 6 is used to control the automated operation of each component.

[0034] Furthermore, as a preferred embodiment, the conveying mechanism 1 includes a mounting base 101, a conveyor belt 102, pulleys 103, and a motor 104. Two pulleys 103 are mounted on two mounting bases 101, and the conveyor belt 102 is sleeved on the outside of the two pulleys 103. A motor 104 is mounted on the side wall of one mounting base 101, and the output end of the motor 104 is connected to the pulley 103. Several clamping seats 105 are provided on the outer wall of the conveyor belt 102, and an X-ray detector 106 is embedded in the middle of each clamping seat 105. The X-ray detectors 106, in conjunction with the X-ray source 302, perform internal defect detection, improving detection efficiency.

[0035] In this embodiment, see Figure 1 As shown, it also includes a housing 601 and a base plate 12. The base plate 12 is provided inside the housing 601. The lower ends of the conveying mechanism 1, the conveying support mechanism 2, the kneading mechanism 4 and the clamping mechanism 5 are respectively connected to the base plate 12. The control system 6 is located on the side wall of the housing 601.

[0036] The control system 6 includes a controller housing 601. An alarm 603 and a power switch 604 can be installed on the side wall of the housing 601. A controller is installed inside the housing 601, and a touch screen display 602 is installed on the side wall of the housing 601. The touch screen display 602 is connected to the controller and is used to input working parameters and display the images detected by the internal defect detection mechanism 3. The six-axis robot 9 is located on one side of the housing 601, at the loading end of the conveyor mechanism 1. A storage box 11 is located on the other side of the housing 601 to store the processed cores. The storage box 11 is located at the bottom of the discharge end of the conveyor mechanism 1. The loading and discharge ends of the conveyor mechanism 1 are located on the outside of the housing 601.

[0037] In this embodiment, the lower end of the mounting base 101 is connected to the upper end of the base plate 12 by bolts.

[0038] Furthermore, as a preferred embodiment, the conveying support mechanism 2 includes a support base 201, an H-shaped support beam 202, and ball bearings 203. Two support bases 201 are provided at both ends of the support beam 202. A plurality of mounting grooves 204 are formed at the upper end of the horizontal plate 205 in the middle of the support beam 202. A plurality of ball bearings 203 are respectively disposed in each mounting groove 204, with at least a portion of the ball bearings 203 extending out of the mounting groove 204. The mounting groove 204 is filled with lubricating oil. In this embodiment, the ball bearings 203 can roll within the mounting groove 204 without detaching from it. The mounting groove 204 contains lubricating oil for lubricating the ball bearings 203 and the inner wall of the mounting groove 204, which reduces the friction between the conveyor belt 102 and the support beam 202, ensuring smooth operation of the conveyor belt 102 and providing stable support for the inspection and flattening processes. The lower end of the support base 201 is connected to the upper end of the base plate 12 by bolts. The support beam 202 is connected to the support base 201 by bolts. The middle part of the support beam 202 is a horizontal plate 205, and the two sides of the horizontal plate 205 are side plates. The side plates can limit the movement of the conveyor belt 102.

[0039] Furthermore, as a preferred embodiment, the internal defect detection mechanism 3 includes a protective cover 301, an X-ray source 302, and a first mounting plate 303. The two first mounting plates 303 are connected to both sides of the conveying support mechanism 2. The protective cover 301 is positioned on the upper end of the two first mounting plates 303. An X-ray source 302 is mounted on the upper inner wall of the protective cover 301 via a bracket 304. A core calibration mechanism 305 is mounted on the two first mounting plates 303. Through the cooperation of the X-ray source 302 (X-ray tube) and the X-ray detector 106, a clear image of the internal structure of the core can be obtained, effectively detecting hidden defects such as uneven distribution of electrode materials and internal structural damage, solving the problem that traditional detection methods cannot detect internal problems. In this embodiment, the protective cover 301 is used to shield X-ray radiation, reducing X-ray radiation to a safe range to avoid affecting the health of workers. During operation, workers can also wear radiation-proof protective clothing and maintain a safe distance from the protective cover 301. The first mounting plate 303 is connected to the support beam 202; see details below. Figure 1 As shown, the first mounting plate 303 and the support beam 202 can be welded or bolted together. The first mounting plate 303 is L-shaped, and the protective cover 301 can be bolted to the first mounting plate 303. The first mounting plate 303 is also made of radiation-resistant material.

[0040] Furthermore, as a preferred embodiment, the core calibration mechanism 305 includes a first cylinder 306, a first fixing plate 307, and a pusher block 308. Each first mounting plate 303 has a first cylinder 306 at its upper end, and the output end of the first cylinder 306 is connected to the first fixing plate 307. The pusher block 308 is mounted on the first fixing plate 307, and a groove is formed on the side of the pusher block 308 away from the first fixing plate 307. The first cylinder 306 can drive the pusher block 308 to move. The groove of the pusher block 308 can engage with the end of the core, automatically calibrating the position of the core so that both ends of the core extend equidistantly from the clamping seat 105, and allowing the core to be placed horizontally within the clamping seat 105. A first position sensor can be installed at the upper end of the first mounting plate 303 near the clamping seat 105 to detect the position of the core. The first cylinder 306 is fixed to the upper end of the first mounting plate 303, the first fixing plate 307 is welded to the output end of the first cylinder 306, and the push block 308 is connected to the first fixing plate 307 by bolts for easy replacement.

[0041] Furthermore, as a preferred embodiment, the kneading mechanism 4 includes a fixed base 401, a second cylinder 402, a rotary motor 403, a slide rail 404, a slider 405, a sliding seat 406, a second fixed plate 407, a rotating disk 408, a first pressure sensor 409, and a kneading head 420 assembly 410. Two fixed bases 401 are installed on both sides of the conveying mechanism 1. The upper end of each fixed base 401 is respectively provided with a second cylinder 402 and a slide rail 404. A slider 405 is provided on the slide rail 404, and a sliding seat 406 is provided at the upper end of the slider 405. A rotary motor 403 is provided on one side of the sliding seat 406, and a second fixed plate 407 is provided on the other side of the sliding seat 406. One side of the second fixed plate 407... A rotating disk 408 is provided, and a kneading head 420 assembly 410 is provided on one side of the rotating disk 408. A first pressure sensor 409 is provided between the rotating disk 408 and the kneading head 420 assembly 410. The output end of the second cylinder 402 is connected to the slider 405, and the output end of the rotary motor 403 passes through the second fixed plate 407 and is connected to the rotating disk 408. In this embodiment, the second cylinder 402 can drive the slider 405 to move, thereby driving the sliding seat 406 and its structure to move, ultimately adjusting the position of the kneading head 420 assembly 410. The rotary motor 403 is used to drive the kneading head 420 assembly 410 to rotate, thereby performing kneading head 420 treatment on the surfaces of both ends of the battery cell. The lower end of the fixed seat 401 has a horizontal plate 411, and the horizontal plate 411 is bolted to the upper end of the base plate 12. The slide rail 404 is fixed to the upper end of the fixed seat 401, and the second cylinder 402 is bolted to the fixed seat 401.

[0042] In this embodiment, a second position sensor is provided on the upper end of the fixing base 401 near the clamping base 105 to detect the position of the winding core. The clamping mechanism 5 includes a frame 501, a gripper driver 502, and grippers 503. The lower end of the frame 501 is connected to the upper end of the horizontal plate 411. The gripper driver 502 is provided on one side of the upper end of the frame 501, and two grippers 503 are provided at the lower end of the gripper driver 502. The gripper driver 502 controls the two grippers 503 to move closer or further apart, thereby achieving the gripping and releasing action of the winding core. Since the gripper driver 502 is an existing structure, it will not be described further here.

[0043] A core lifting mechanism 412 is provided between the two fixed seats 401. The core lifting mechanism 412 includes a third cylinder 413, a support frame 414, clamping blocks 415, and guide blocks 416. The third cylinder 413 is located below the conveying mechanism 1. The output end of the third cylinder 413 is provided with the support frame 414. Two clamping blocks 415 are provided on the upper end of the support frame 414. The two clamping blocks 415 are located on both sides of the conveying mechanism 1. Each clamping block 415 has a guide block 416 on one side. The guide block 416 has an inclined surface on the side near the clamping block 415. The third cylinder 413 is used to drive the support frame 414 and the clamping blocks 415 on it to move up and down, so that both ends of the core can enter the clamping blocks 415. The inclined surface on the guide block 416 is designed to guide the core, making it easier for the core to automatically enter the clamping blocks 415. When the second position sensor detects the position of the core, the third cylinder 413 drives the support frame 414 and the clamping block 415 on it to move upward, thereby lifting the core upward.

[0044] Furthermore, as a preferred embodiment, the kneading head 420 assembly 410 includes a connecting plate 417, a third fixing plate 418, an electric cylinder 419, a kneading head 420, a kneading block 421, a top rod 422, a telescopic rod 423, and a compression spring 424. The connecting plate 417 is connected to the rotating disk 408 via a first pressure sensor 409. Several third fixing plates 418 are provided on one side of the connecting plate 417. A top rod 422 is provided in the middle of one side of the connecting plate 417. An electric cylinder 419 is provided on one side of the third fixing plate 418. The kneading head 420 is provided on the other side of the third fixing plate 418. One end is connected to the output end of the electric cylinder 419. On the other side of the third fixing plate 418, several telescopic rods 423 are also provided. Compression springs 424 are fitted onto the telescopic rods 423. A flattening block 421 is provided at one end of each telescopic rod 423. A flattening head 420 passes through the flattening block 421. The surface of the flattening block 421 away from the telescopic rods 423 is arc-shaped. The electric cylinder 419 controls the extension length of the flattening head 420. The telescopic rods 423 and compression springs 424 act as a buffer, facilitating stable movement of the flattening block 421 on the flattening head 420 and preventing wobbling. The first pressure sensor 409 monitors the flattening force in real time to ensure appropriate force and avoid damage to the electrodes. During use, the flattening head 420 gradually moves from the outermost part of the core towards the middle of the core, achieving layered flattening of the core. The curved surface on the flattening block 421 can press the outermost layer of the core end surface inward, preventing outward wrinkles. Since the flattening head 420 starts flattening from the outermost layer of the core, this can easily lead to outward wrinkles in the outermost part of the core. The curved surface on the flattening block 421 can press the outermost layer of the core to prevent outward wrinkles, ensuring that the flattening direction of each layer of the core is consistent, making the end face of the core smoother. At the same time, the design of structures such as the telescopic rod 423 and the compression spring 424 allows the flattening head 420 to move stably and can adapt to cores with different outer diameters. The elastic force provided by the compression spring 424 to the flattening block 421 can be set as needed to prevent excessive elasticity from deforming the core.

[0045] A CCD probe 425 is provided on one side of the top rod 422. The CCD probe 425 is used to automatically identify the outer diameter dimension parameters of the end surface of the core, so as to facilitate the control system 6 to control the working parameters of the kneading mechanism 4.

[0046] Furthermore, as a preferred embodiment, a conductivity detection mechanism 7 is also included. The conductivity detection mechanism 7 is located on the other side of the internal defect detection mechanism 3. The conductivity detection mechanism 7 includes an eddy current sensor 701 and a sensor mounting plate 702. Two sensor mounting plates 702 are located on both sides of the conveying support mechanism 2, and each sensor mounting plate is equipped with an eddy current sensor 701. The conductivity performance of the core electrode is detected using the eddy current sensor 701. The eddy current sensor 701 is mounted on the sensor mounting plates 702 on both sides of the conveying support mechanism 2, enabling rapid and accurate detection of whether the electrode conductivity meets the standards, further improving the detection system and ensuring the overall quality of the battery cell. A third position sensor is located on the side of the sensor mounting plate 702 near the clamping seat 105. The third position sensor is used to detect the position of the core. When the core is detected, the two eddy current sensors 701 are activated. The sensor mounting plate 702 is arranged in a Z-shape, and the sensor mounting plate 702 is connected to the support beam 202 by bolts.

[0047] Furthermore, as a preferred embodiment, it also includes a flattening mechanism 8, which is located on the side of the clamping mechanism 5 away from the flattening mechanism 4. The flattening mechanism 8 includes a cylinder mounting plate 801, a fourth cylinder 802, a pressing block 803, a spring 804, a second pressure sensor 805, and a sliding block 806. The two cylinder mounting plates 801 are located on both sides of the conveying mechanism 1. A fourth cylinder 802 is respectively provided on one side of each cylinder mounting plate 801, and a pressing block 803 is respectively provided on the other side of each cylinder mounting plate 801. The second pressure sensor 805 and the sliding block 806 are provided on the inner wall of the pressing block 803. The two ends of the spring 804 are connected to the second pressure sensor 805 and the sliding block 806. The output end of the fourth cylinder 802 is connected to the sliding block 806. The flattening mechanism 8, through the cooperation of the fourth cylinder 802, the pressing block 803, the spring 804, the second pressure sensor 805, and the sliding block 806, can perform secondary flattening on the end of the core. The second pressure sensor 805 monitors the pressure in real time, and the spring 804 acts as a buffer to ensure a smooth flattening process and achieve a higher degree of flatness at the end of the core. The flattening mechanism 8 is located on the side of the clamping mechanism 5 away from the kneading mechanism 4. The lower end of the cylinder mounting plate 801 is connected to the upper end of the base plate 12 by bolts. When the fourth cylinder 802 operates, it pushes the pressure block 803 to press the surface of the core end, achieving flattening. When the pressure block 803 contacts the surface of the core end, the sliding block 806 pushes the spring 804, causing it to compress. The spring 804 applies force to the second pressure sensor 805, which detects the pressure data to prevent excessive pressure. This ensures that the pressure applied by the pressure block 803 is within a reasonable range, guaranteeing a higher degree of flatness at the core end without causing collapse due to excessive pressure.

[0048] In this embodiment, a fourth position sensor is provided on the side of the cylinder mounting plate 801 near the clamping seat 105 to detect the position of the core, so that the pressure block 803 can accurately press on the end surface of the core.

[0049] In this embodiment, two six-axis robots 9 can be set up to realize alternating feeding of the core and improve feeding efficiency.

[0050] In this embodiment, the controller in the control system 6 can be connected to the six-axis robot 9, motor 104, touch screen 602, X-ray source 302, X-ray detector 106, first cylinder 306, second cylinder 402, third cylinder 413, fourth cylinder 802, first position sensor, second position sensor, third position sensor, fourth position sensor, rotary motor 403, first pressure sensor 409, second pressure sensor 805, gripper driver 502, electric cylinder 419, CCD probe 425, and eddy current sensor 701. This facilitates the automatic operation of each device, realizes intelligent control at each stage, eliminates manual operation, improves the automation of the equipment, and makes the equipment more intelligent.

[0051] In operation, after inputting the operating parameters of each component via the touchscreen display 602, the outer core is transported to the loading end of the conveyor mechanism 1. The controller then controls the gripper at the end of the six-axis robot 9 to clamp the core, and in conjunction with the vision recognition system, places the core onto the clamping seat 105. Simultaneously, the motor 104 drives the pulley 103 to rotate the conveyor belt 102, thus transporting the core. When the third position sensor detects the core, the motor 104 stops working, and the eddy current sensor 701 detects the conductivity of the core. If the detection fails, the alarm 603 in the control system 6 will sound an alarm, allowing for timely intervention by the operator. If the detection passes, the motor 104 continues to operate. When the first position sensor detects the roll core, the first cylinder 306 operates, driving the first fixing plate 307 and the pusher block 308 to move. The pusher block 308 then pushes the roll core to calibrate its position. The X-ray source 302 then operates, emitting X-rays that penetrate the roll core and are received by the X-ray detector 106, converted into electrical signals, and uploaded to the controller. These signals are then converted into an image and displayed on the touchscreen display 602. If a defect is detected inside the roll core, the alarm 603 built into the control system 6 will sound an alarm. If no defect is detected inside the roll core, the motor 104 automatically operates to continue feeding the roll core. When the second position sensor detects the roll core, the third cylinder 413 operates, driving the support frame 414 and the clamping block 415 to move upwards, lifting the roll core to a certain height. Then, the gripper driver 502 drives the grippers 503 to move closer together, thus clamping the core. The CCD probe 425 then detects the outer diameter of the core's end surface and transmits the data to the controller. The controller controls the electric cylinder 419 to drive the flattening head 420 to move, automatically adapting to the core's outer diameter. Next, the second cylinder 402 pushes the slider 405 to move, causing the sliding seat 406 and its onboard rotary motor 403 to move horizontally. Simultaneously, the rotary motor 403 drives the connecting plate 417, causing the electric cylinder 419, flattening head 420, flattening block 421, top rod 422, telescopic rod 423, and compression spring 424 on it to rotate, achieving the flattening process on the core's end surface. During the flattening process, the electric cylinder 419 drives the flattening head 420 to gradually move closer to the top rod 422, achieving gradual flattening of the core from the outer layer to the inner layer. After the end surface of the core is flattened, the third cylinder 413 drives the support frame 414 and clamping block 415 to move upward to catch the core. Then, the jaw driver 502 drives the two jaws 503 to move away from each other and release the core. Then, the third cylinder 413 drives the support frame 414 and clamping block 415 to move downward, so that the core enters the clamping seat 105. Then the motor 104 continues to work and continues to feed the core.When the fourth position sensor detects the core, the fourth cylinder 802 drives the pressure block 803 to move, causing the pressure block 803 to press against the end surface of the core. At the same time, the second pressure sensor 805 detects the pressure and precisely controls the pressure of the pressure block 803 on the core to avoid damaging it. Then, the motor 104 continues to work, conveying the core to the unloading end. Under its own weight, the core falls into the storage box 11 for easy centralized recycling.

[0052] In this embodiment, automatic feeding, conductivity detection, internal defect detection, position calibration, end flattening, pressing, lifting and clamping of the core can be realized, thereby achieving intelligent equipment, greatly reducing labor costs, saving labor, and greatly improving work efficiency and product quality.

[0053] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for detecting and flattening the ends of the wound electrodes of a battery cell, characterized in that, include: A conveying mechanism for conveying the winding core; A conveying support mechanism is installed inside the conveying mechanism to support the conveying mechanism; An internal defect detection mechanism is installed on the conveying support mechanism and located above the conveying mechanism. It is used to detect defects inside the core and calibrate the position of the core. A kneading mechanism is located on both sides of the conveying mechanism and on one side of the internal defect detection mechanism; The clamping mechanism is located on the side of the kneading mechanism away from the internal defect detection mechanism; A control system is connected to the conveying mechanism, the internal defect detection mechanism, the kneading mechanism, and the clamping mechanism.

2. The battery cell winding electrode detection and end flattening equipment as described in claim 1, characterized in that, The conveying mechanism includes a mounting base, a conveyor belt, pulleys, and a motor. Two pulleys are mounted on two mounting bases, and the conveyor belt is sleeved on the outside of the two pulleys. The motor is provided on the side wall of one of the mounting bases, and the output end of the motor is connected to the pulley.

3. The battery cell winding electrode detection and end flattening equipment as described in claim 2, characterized in that, It also includes clamping seats, and a plurality of clamping seats are provided on the outer wall of the conveyor belt, and an X-ray detector is embedded in the middle part of each clamping seat.

4. The battery cell winding electrode detection and end flattening equipment as described in claim 2, characterized in that, The conveying support mechanism includes a support base, an H-shaped support beam, and ball bearings. Two support bases are provided at both ends of the support beam. Several mounting grooves are opened at the upper end of the horizontal plate in the middle of the support beam. Several ball bearings are respectively provided in each mounting groove. The ball bearings extend at least partially out of the mounting groove. The mounting groove is filled with lubricating oil.

5. The battery cell winding electrode detection and end flattening device as described in claim 1, characterized in that, The internal defect detection mechanism includes a protective cover, an X-ray source, and a first mounting plate. The two first mounting plates are connected to both sides of the conveying support mechanism. The protective cover is disposed on the upper end of the two first mounting plates. The X-ray source is mounted on the upper inner wall of the protective cover via a bracket. A core calibration mechanism is disposed on the two first mounting plates.

6. The battery cell winding electrode detection and end flattening device as described in claim 5, characterized in that, The core calibration mechanism includes a first cylinder, a first fixing plate, and a push block. Each first mounting plate has a first cylinder at its upper end, and the first fixing plate is provided at the output end of the first cylinder. The push block is provided on the first fixing plate, and a groove is provided on the side of the push block away from the first fixing plate.

7. The battery cell winding electrode detection and end flattening device as described in claim 1, characterized in that, The kneading mechanism includes a fixed base, a second cylinder, a rotary motor, a slide rail, a slider, a sliding seat, a second fixed plate, a rotating disk, a first pressure sensor, and a kneading head assembly. The two fixed bases are installed on both sides of the conveying mechanism. The upper end of each fixed base is respectively provided with the second cylinder and the slide rail. The slider is provided on the slide rail. The upper end of the slider is provided with the sliding seat. The rotary motor is provided on one side of the sliding seat. The second fixed plate is provided on the other side of the sliding seat. The rotating disk is provided on one side of the second fixed plate. The kneading head assembly is provided on one side of the rotating disk. The first pressure sensor is provided between the rotating disk and the kneading head assembly. The output end of the second cylinder is connected to the slider. The output end of the rotary motor passes through the second fixed plate and is connected to the rotating disk. A core lifting mechanism is provided between the two fixed seats. The core lifting mechanism includes a third cylinder, a support frame, a clamping block, and a guide block. The third cylinder is provided below the conveying mechanism. The support frame is provided at the output end of the third cylinder. Two clamping blocks are provided at the upper end of the support frame. The two clamping blocks are located on both sides of the conveying mechanism. A guide block is provided on one side of each clamping block. An inclined surface is provided on the side of the guide block near the clamping block.

8. The battery cell winding electrode detection and end flattening device as described in claim 7, characterized in that, The kneading head assembly includes a connecting plate, a third fixing plate, an electric cylinder, a kneading head, a kneading block, a top rod, a telescopic rod, and a compression spring. The connecting plate is connected to the rotating disk via the first pressure sensor. A plurality of the third fixing plates are provided on one side of the connecting plate. A top rod is provided in the middle of one side of the connecting plate. The electric cylinder is provided on one side of the third fixing plate. The kneading head is provided on the other side of the third fixing plate. One end of the kneading head is connected to the output end of the electric cylinder. A plurality of telescopic rods are also provided on the other side of the third fixing plate. The compression spring is sleeved on the telescopic rod. The kneading block is provided at one end of the plurality of telescopic rods. The kneading head passes through the kneading block. The surface of the kneading block away from the telescopic rod is an arc-shaped surface. A CCD probe is installed on one side of the top rod.

9. The battery cell winding electrode detection and end flattening device as described in claim 8, characterized in that, It also includes a conductivity detection mechanism. The conductivity detection mechanism is provided on the other side of the internal defect detection mechanism. The conductivity detection mechanism includes an eddy current sensor and a sensor mounting plate. The two sensor mounting plates are provided on both sides of the conveying support mechanism. Each sensor mounting plate is provided with an eddy current sensor.

10. The battery cell winding electrode detection and end flattening device as described in claim 1, characterized in that, It also includes a flattening mechanism, which is located on the side of the clamping mechanism away from the kneading mechanism. The flattening mechanism includes a cylinder mounting plate, a fourth cylinder, a pressure block, a spring, a second pressure sensor, and a sliding block. The two cylinder mounting plates are located on both sides of the conveying mechanism. Each cylinder mounting plate has a fourth cylinder on one side and a pressure block on the other side. The second pressure sensor and the sliding block are located on the inner wall of the pressure block. The two ends of the spring are connected to the second pressure sensor and the sliding block. The output end of the fourth cylinder is connected to the sliding block.

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