Battery cell cutting device

Abstract

The invention relates to the technical field of battery cell cutting, and discloses a battery cell cutting device which comprises a bearing table, a carrying mechanism, a clamping rotating mechanism and a laser cutting device, the bearing table is used for supporting the carrying mechanism, the clamping rotating mechanism and the laser cutting device, the carrying mechanism comprises a first clamping jaw and a position adjusting assembly, and the position adjusting assembly is installed on the bearing table; the first clamping jaw is arranged on the position adjusting assembly, the first clamping jaw is used for clamping a battery cell, and the position adjusting assembly is arranged to be capable of adjusting the position of the first clamping jaw in the horizontal direction and the vertical direction so that the battery cell to be cut can be carried to the cutting station from the storage station or the cut battery cell can be carried to the storage station from the cutting station; the clamping and rotating mechanism is used for clamping and rotating the battery cell located at the cutting station, and the laser cutting device is used for cutting the battery cell on the cutting station. By means of the design, the automation level of the battery cell cutting device can be improved, the labor cost can be reduced, and the battery cell cutting efficiency can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery cell cutting, and in particular, to a battery cell cutting device. Background Art

[0002] With the rapid development of the new energy industry, especially the continuous growth in the demand for power batteries and energy storage batteries, the requirements for the energy density, safety performance, and manufacturing consistency of battery systems are increasing day by day. As the core component of a battery module, the structural integrity, dimensional accuracy, and internal material distribution of a battery cell directly affect its electrochemical performance and thermal management performance. Therefore, during the battery production and integration process, high-precision cutting of battery cells has become a key link in optimizing the performance of battery cells and adapting them to modules.

[0003] In practical applications, different types of battery modules often require battery cells to have specific sizes, shapes, or end structures to meet design requirements such as space layout, connection methods, and heat dissipation paths. For example, in an electric vehicle battery pack, to improve space utilization and energy density, standard-sized battery cells are often cut into smaller units and arranged according to the module structure; in an energy storage system, the consistency of battery cells is crucial for the overall system's cycle life and safety, and error control during the cutting process is particularly critical.

[0004] However, existing battery cell cutting equipment generally has the following deficiencies: (1) Traditional cutting devices mostly adopt fixed clamping structures and lack adaptive compensation capabilities, making it difficult to meet the flexible clamping requirements of battery cells with different sizes and shapes. Especially when dealing with easily deformable materials such as soft-pack battery cells and aluminum-shell battery cells, uneven clamping force is likely to cause damage to the battery cell structure, affecting its subsequent electrochemical performance. (2) Most existing equipment still relies on manual intervention or fixed programs in aspects such as cutting path planning, rotation positioning, and clamping angle adjustment, lacking intelligent control means and making it difficult to meet the requirements of modern automated production lines for efficient, stable, and traceable processing. Summary of the Invention

[0005] The purpose of the present disclosure is to provide a battery cell cutting device to solve the technical problems existing in the related art.

[0006] To achieve the above purpose, the present disclosure provides a battery cell cutting device, including a carrier table, a handling mechanism, a clamping and rotating mechanism, and a laser cutting device.

[0007] The carrier table is used to support the handling mechanism, the clamping and rotating mechanism, and the laser cutting device; The handling mechanism includes a first jaw and a position adjustment component. The position adjustment component is installed on the carrying platform, and the first jaw is arranged on the position adjustment component. The first jaw is used for clamping the battery cell, and the position adjustment component is configured to be able to adjust the position of the first jaw in the horizontal and vertical directions, so as to transport the battery cell to be cut from the storage station to the cutting station or transport the cut battery cell from the cutting station to the storage station; The clamping and rotating mechanism is used for clamping and rotating the battery cell at the cutting station; The laser cutting device is used for cutting the battery cell at the cutting station.

[0008] Optionally, the clamping and rotating mechanism includes a first motor, a transmission component, a first clamping part and a second clamping part; The first clamping part and the second clamping part are arranged opposite to each other in the X-axis direction; The first motor is configured to be able to drive the first clamping part and the second clamping part to move towards or away from each other respectively through the transmission component, so as to clamp the battery cell at the cutting station.

[0009] Optionally, the transmission component includes a base, a first lead screw, a first lead screw nut, a first slider seat, a first guide rail, a second lead screw, a second lead screw nut, a second slider seat and a second guide rail; The base is arranged on the carrying platform; The first guide rail and the second guide rail are arranged at intervals on the top surface of the base in the same horizontal plane. The first clamping part is arranged at the upper end of the first slider seat, the lower end of the first slider seat is slidably connected to the first guide rail, the second clamping part is arranged at the upper end of the second slider seat, and the lower end of the second slider seat is slidably connected to the second guide rail; The driving end of the first motor is connected to one end of the first lead screw, and the other end of the first lead screw is connected to one end of the second lead screw; The first lead screw nut is arranged on the first slider seat, and the first lead screw nut is sleeved on the first lead screw and is in screw fit with the first lead screw; The second lead screw nut is arranged on the second slider seat, and the second lead screw nut is sleeved on the second lead screw and is in screw fit with the second lead screw; Wherein, the first lead screw is configured as a left-handed lead screw, and the second lead screw is configured as a right-handed lead screw.

[0010] Optionally, the first lead screw and the second lead screw are integrally formed.

[0011] Optionally, the first lead screw and the second lead screw are separately formed, and the transmission component further includes a locking component, a first mounting seat group and a second mounting seat group; The first mounting seat group is arranged on the top surface of the base and includes two first mounting seats. The two first mounting seats are arranged at intervals in the same horizontal plane, and the first guide rail is located between the two first mounting seats; The second mounting seat group is arranged on the top surface of the base and includes two second mounting seats. The two second mounting seats are arranged at intervals in the same horizontal plane, and the second guide rail is located between the two second mounting seats; The first end of the first lead screw passes through one of the two first mounting seats and is connected to the driving end of the first motor, and the second end of the first lead screw passes through the other of the two first mounting seats; The first end of the second lead screw passes through one of the two second mounting seats and is connected to the second end of the first lead screw through the locking assembly, and the second end of the first lead screw is rotatably connected to the other of the two second mounting seats.

[0012] Optionally, the locking assembly includes a connecting member, a first fastener, and a second fastener; The connecting member includes a first part, an intermediate part, and a second part. The first part and the second part are respectively connected to both ends of the intermediate part. A first slot is formed on the first part, a second slot is formed on the second part, and external threads are provided on both the first part and the second part; The first lead screw includes a first screw rod and a first connecting convex portion formed on the outer wall of the first screw rod and protruding outward along the radial direction of the first screw rod. One end of the first screw rod close to the second lead screw can be inserted into the first slot, so that the first connecting convex portion abuts against the outer wall of the first part. The first fastener is sleeved on the first screw rod and the first connecting convex portion, and the first fastener is arranged to be threadedly engaged with the first part; The second lead screw includes a second screw rod and a second connecting convex portion formed on the outer wall of the second screw rod and protruding outward along the radial direction of the second screw rod. One end of the second screw rod close to the first lead screw can be inserted into the second slot, so that the second connecting convex portion abuts against the outer wall of the second part. The second fastener is sleeved on the second screw rod and the second connecting convex portion, and the second fastener is arranged to be threadedly engaged with the second part.

[0013] Optionally, the first clamping portion includes a second motor, a rotary cylinder, and a second jaw, and the second clamping portion includes a connecting rod and a positioning portion; The second motor is installed at the upper end of the first slider base. The driving end of the second motor passes through the first slider base and is connected to one end of the rotary cylinder. The other end of the rotary cylinder is provided with the second jaw. The positioning portion is configured as a multi-stage sleeve structure. The multi-stage sleeve structure includes a first cylinder, a second cylinder, and a third cylinder. The first end of the first cylinder is an open end. The second end of the first cylinder is connected to the first end of the second cylinder. The second end of the second cylinder is connected to the first end of the third cylinder. The third cylinder is a closed end. One end of the connecting rod is connected to the closed end, and the other end of the connecting rod is connected to the upper end of the second slider base. Wherein, the inner diameter of the second cylinder is larger than the inner diameter of the third cylinder and smaller than the inner diameter of the first cylinder.

[0014] Optionally, the second clamping portion further includes a first elastic member, a second elastic member, and a third elastic member. The first elastic member is located inside the first cylinder and is connected to the wall of the cavity of the first cylinder. The second elastic member is located inside the second cylinder and is connected to the wall of the cavity of the second cylinder. The third elastic member is located inside the third cylinder and is connected to the wall of the cavity of the third cylinder.

[0015] Optionally, the position adjustment mechanism includes an X-axis linear module, a Y-axis linear module, and a Z-axis linear module. The X-axis linear module includes an X-axis frame and an X-axis driving motor. The Y-axis linear module includes a Y-axis frame and a Y-axis driving motor. The Z-axis linear module includes a Z-axis frame and a Z-axis driving motor. The X-axis frame is installed on the bearing table. An X-axis driving motor is installed on one side of the X-axis frame along the negative X-axis direction. The driving end of the X-axis driving motor is connected to the upper Y-axis frame through an X-axis lead screw and an X-axis lead screw nut. The driving end of the Y-axis driving motor is connected to the Z-axis frame through a Y-axis lead screw and a Y-axis lead screw nut. The driving end of the Z-axis driving motor is connected to the first jaw through a Z-axis lead screw and a Z-axis lead screw nut.

[0016] Optionally, the battery cell cutting device further includes a storage mechanism. The storage mechanism includes a loading storage component, an unloading storage component, and an NG storage component. The loading storage component includes a loading drawer and a first slide rail group. The unloading storage component includes an unloading drawer and a second slide rail group. The NG storage component includes an NG drawer and a third slide rail group. The first slide rail group is installed on the carrying platform and includes two first slide rails. The two first slide rails are arranged at intervals in the same horizontal plane. On the opposite sides of the two first slide rails, first slide grooves extending in the Z-axis direction are respectively formed. On the opposite sides of the loading drawer, first sliders are respectively arranged. The first sliders are slidably matched in the first slide grooves. Among them, the loading drawer is used to accommodate the battery cells to be cut. The second slide rail group is installed on the carrying platform and includes two second slide rails. The two second slide rails are arranged at intervals in the same horizontal plane. On the opposite sides of the two second slide rails, second slide grooves extending in the Z-axis direction are respectively formed. On the opposite sides of the unloading drawer, second sliders are respectively arranged. The second sliders are slidably matched in the second slide grooves. Among them, the unloading drawer is used to accommodate the cut battery cells. The third slide rail group is installed on the carrying platform and includes two third slide rails. The two third slide rails are arranged at intervals in the same horizontal plane. On the opposite sides of the two third slide rails, third slide grooves extending in the Z-axis direction are respectively formed. On the opposite sides of the NG drawer, third sliders are respectively arranged. The third sliders are slidably matched in the third slide grooves. Among them, the NG drawer is used to accommodate defective battery cells.

[0017] Through the above technical solutions, by providing the position adjustment component, the positions of the first clamping jaw and the battery cell on the first clamping jaw in the horizontal and vertical directions can be adjusted. On the one hand, it can achieve the purpose of transporting from the storage station to the cutting station or transporting the cut battery cells from the cutting station to the storage station; on the other hand, it can achieve the purpose of avoiding obstacles on the carrying platform (such as clamping and rotating mechanisms or laser cutting devices, etc.), which is beneficial to improving the flexibility and applicability of the handling mechanism in a complex environment (narrow channels formed between various mechanisms or a space with obstacles caused by mechanisms at different heights). Through the cooperation between the provided clamping and rotating mechanism and the laser cutting device, the clamping and rotating mechanism can be used to clamp and rotate the battery cell to be cut during the cutting process, so that the laser cutting device can perform precise cutting according to the preset cutting path. Such a design is beneficial to improving the automation level of the battery cell cutting device in the present disclosure, and at the same time can reduce labor costs and improve the working efficiency of battery cell cutting.

[0018] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. They are used together with the following specific implementation to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings: Figure 1It is a schematic structural diagram of a battery cell cutting device provided by an exemplary embodiment of the present disclosure. Among them, the carrier table is in a state where the cabinet is not installed; Figure 2 It is a schematic structural diagram of a clamping and rotating mechanism of a battery cell cutting device provided by an exemplary embodiment of the present disclosure; Figure 3 It is a sectional view showing the connection between the first lead screw, the second lead screw and the locking assembly of a battery cell cutting device provided by an exemplary embodiment of the present disclosure; Figure 4 It is a schematic structural diagram of a positioning part of a battery cell cutting device provided by an exemplary embodiment of the present disclosure; Figure 5 It is a schematic structural diagram of a battery cell cutting device provided by an exemplary embodiment of the present disclosure. Among them, the carrier table is in a state where the cabinet is installed.

[0020] Explanation of reference numerals 10. Carrier table; 20. Handling mechanism; 21. First jaw; 22. Position adjustment component; 221. X-axis linear module; 2211. X-axis frame; 2212. X-axis drive motor; 222. Y-axis linear module; 2221. Y-axis frame; 2222. Y-axis drive motor; 223. Z-axis linear module; 2231. Z-axis frame; 2232. Z-axis drive motor; 30. Clamping and rotating mechanism; 31. First motor; 32. Transmission component; 321. Base; 322. First lead screw; 3221. First screw; 3222. First connecting protrusion; 323. First lead screw nut; 324. First slider seat; 325. First guide rail; 326. Second lead screw; 3261. Second screw; 3262. Second connecting protrusion; 327. Second lead screw nut; 328. Second slider seat; 329. Second guide rail; 33. First clamping part; 331. Second motor; 332. Rotary cylinder; 333. Second jaw; 34. Second clamping part; 341. Connecting rod; 342. Positioning part; 3421. First cylinder; 3422. Second cylinder; 3423. Third cylinder; 343. First elastic part; 344. Second elastic part; 345. Third elastic part; 35. Locking component; 351. Connecting piece; 3511. First part; 3512. Middle part; 3513. Second part; 3514. First slot; 3515. Second slot; 352. First fastener; 353. Second fastener; 36. First mounting seat; 37. Second mounting seat; 40. Laser cutting device; 50. Storage mechanism; 51. Loading storage component; 511. Loading drawer; 512. First slide rail; 513. First slider; 52. Unloading storage component; 521. Unloading drawer; 522. Second slide rail; 523. Second chute; 524. Second slider; 53. NG storage component; 531. NG drawer; 532. Third slide rail; 533. Third chute; 534. Third slider; 60. Cabinet; 61. Observation window; 62. Drawer opening; 70. Protective cover. Detailed implementation manners

[0021] The following will describe the detailed implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the detailed implementation manners described herein are only for explaining and illustrating the present disclosure, and are not used to limit the present disclosure.

[0022] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for facilitating the description of the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, specific orientation structure and operation, and thus should not be construed as a limitation of the present disclosure. For example, see Figure 1 , Figure 1The upper side of the drawing direction of Figure 1 The upper side of the drawing direction of

[0023] In the description of the present disclosure, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "connected", "coupled", "installed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0024] As Figures 1 to 5 As shown, the present disclosure provides a battery cell cutting device, including a carrier table 10, a handling mechanism 20, a clamping and rotating mechanism 30, and a laser cutting device 40. The carrier table 10 is used to support the handling mechanism 20, the clamping and rotating mechanism 30, and the laser cutting device 40. The handling mechanism 20 includes a first jaw 21 and a position adjustment assembly 22. The position adjustment assembly 22 is installed on the carrier table 10, and the first jaw 21 is arranged on the position adjustment assembly 22. The first jaw 21 is used to clamp the battery cell. The position adjustment assembly 22 is configured to be able to adjust the position of the first jaw 21 in the horizontal and vertical directions to transfer the battery cell to be cut from the storage station to the cutting station or transfer the cut battery cell from the cutting station to the storage station. The clamping and rotating mechanism 30 is used to clamp and rotate the battery cell at the cutting station, and the laser cutting device 40 is used to cut the battery cell at the cutting station.

[0025] It should be noted that the battery cell in the present disclosure is a cylindrical battery cell, and the battery cell is always in a horizontal and transverse state during storage, handling, or cutting.

[0026] Through the above technical solution, by means of the position adjustment component 22 provided, the positions of the first clamping jaw 21 and the battery cell on the first clamping jaw 21 in the horizontal and vertical directions can be adjusted. On the one hand, it can achieve the purpose of transporting from the storage station to the cutting station or transporting the cut battery cells from the cutting station to the storage station; on the other hand, it can achieve the purpose of avoiding obstacles (such as the clamping and rotating mechanism 30 or the laser cutting device 40, etc.) on the carrier 10, which is beneficial to improving the flexibility and applicability of the handling mechanism 20 in a complex environment (the narrow channels formed between various mechanisms or the obstacle-filled space caused by mechanisms at different heights). Through the cooperation between the clamping and rotating mechanism 30 and the laser cutting device 40 provided, the clamping and rotating mechanism 30 can be used to clamp and rotate the battery cell to be cut during the cutting process, so that the laser cutting device 40 can perform precise cutting according to the preset cutting path. Such a design is beneficial to improving the automation level of the battery cell cutting device in the present disclosure, and at the same time can reduce labor costs and improve the working efficiency of battery cell cutting.

[0027] Optionally, the battery cell cutting device may further include a control system and a light sensor. The light sensor is arranged on the position adjustment component 22, and the control system is electrically connected to the light sensor.

[0028] Among them, through the provided light sensor, on the one hand, the light sensor can detect the positions of the battery cells (the battery cells on the storage station and the battery cells on the cutting station), so that the first clamping jaw 21 can accurately clamp the battery cells; on the other hand, when the position adjustment component 22 drives the first clamping jaw 21 to move, the light sensor can real-time monitor whether there are obstacles on the moving path of the first clamping jaw 21, prevent the occurrence of collision accidents, and protect the safety of the equipment.

[0029] As an implementation manner, as Figures 1 to 2 shown, the clamping and rotating mechanism 30 includes a first motor 31, a transmission component 32, a first clamping part 33 and a second clamping part 34. The first clamping part 33 and the second clamping part 34 are arranged opposite to each other in the X-axis direction. The first motor 31 is arranged to be able to drive the first clamping part 33 and the second clamping part 34 to move towards or away from each other respectively through the transmission component 32 for clamping the battery cells on the cutting station.

[0030] Among them, by controlling the forward and reverse rotation of the first motor 31, the approach or separation of the first clamping part 33 and the second clamping part 34 can be achieved.

[0031] Among them, the transmission component 32 can convert the rotational motion of the motor into the linear motion of the clamping part, so as to realize the clamping or release of the battery cells.

[0032] Among them, through the provided first clamping portion 33 and second clamping portion 34, the first clamping portion 33 and the second clamping portion 34 are respectively located on opposite sides in the X-axis direction. When it is necessary to clamp the battery cell to be cut, under the action of the first motor 31 and the transmission assembly 32, the first clamping portion 33 and the second clamping portion 34 can move towards each other until they firmly clamp the battery cell to be cut; conversely, when it is necessary to release the cut battery cell, the first clamping portion 33 and the second clamping portion 34 move away from each other and separate from the cut battery cell.

[0033] Specifically, when it is necessary to cut the battery cell to be cut at the cutting station, the handling mechanism 20 can first be used to transport the battery cell to be cut from the storage station to the cutting station, and under the action of the first motor 31 and the transmission assembly 32, the first clamping portion 33 and the second clamping portion 34 can move towards each other until they firmly clamp the battery cell to be cut. Then, the first jaw 21 of the handling mechanism 20 is used to release the battery cell to be cut and move away from the cutting station, so that the laser cutting device 40 can cut the battery cell to be cut at the cutting station; conversely, when it is necessary to store the cut battery cell (i.e., release the cut battery cell), the first jaw 21 of the handling mechanism 20 can first be used to clamp the cut battery cell, and under the action of the first motor 31 and the transmission assembly 32, the first clamping portion 33 and the second clamping portion 34 can move away from each other until they separate from the cut battery cell. Then, the handling mechanism 20 is used to transport the cut battery cell from the cutting station to the storage station.

[0034] As an implementation manner, such as Figure 2As shown in the figure, the transmission assembly 32 includes a base 321, a first lead screw 322, a first lead screw nut 323, a first slider seat 324, a first guide rail 325, a second lead screw 326, a second lead screw nut 327, a second slider seat 328, and a second guide rail 329. The base 321 is disposed on the carrier 10. The first guide rail 325 and the second guide rail 329 are horizontally arranged at intervals on the top surface of the base 321. The upper end of the first slider seat 324 is provided with a first clamping portion 33, and the lower end of the first slider seat 324 is slidably connected to the first guide rail 325. The upper end of the second slider seat 328 is provided with a second clamping portion 34, and the lower end of the second slider seat 328 is slidably connected to the second guide rail 329. The driving end of the first motor 31 is connected to one end of the first lead screw 322, and the other end of the first lead screw 322 is connected to one end of the second lead screw 326. The first lead screw nut 323 is disposed on the first slider seat 324. The first lead screw nut 323 is sleeved on the first lead screw 322 and is in screw fit with the first lead screw 322. The second lead screw nut 327 is disposed on the second slider seat 328. The second lead screw nut 327 is sleeved on the second lead screw 326 and is in screw fit with the second lead screw 326. Among them, the first lead screw 322 is configured as a left-handed lead screw (with a left-handed thread), and the second lead screw 326 is configured as a right-handed lead screw (with a right-handed thread).

[0035] Since one end of the first lead screw 322 is connected to the output shaft of the first motor 31, the other end of the first lead screw 322 is connected to one end of the second lead screw 326, and the first lead screw nut 323 is disposed on the first slider seat 324 and is engaged with the first lead screw 322 to drive the first slider seat 324 and the first clamping portion 33 on the first slider seat 324 to reciprocate on the first guide rail 325. The second lead screw nut 327 is disposed on the second slider seat 328 and is engaged with the second lead screw 326 to drive the second slider seat 328 and the second clamping portion 34 on the second slider seat 328 to reciprocate on the second guide rail 329. Therefore, when the motor rotates, the first lead screw 322 and the second lead screw 326 can rotate simultaneously and drive the first slider seat 324 and the second slider seat 328 to move towards or away from each other along the corresponding guide rails respectively. Such a design can achieve the synchronous two-way (symmetric) movement of the first clamping portion 33 and the second clamping portion 34, which is beneficial to maintaining the high synchrony and symmetry of the clamping action, so that the battery cell to be cut can be stably and evenly clamped or released.

[0036] Among them, the first lead screw 322 has a left-handed thread (hypothetical) and is used to cooperate with the first lead screw nut 323 on the first slider seat 324 to achieve the linear movement of the first slider seat 324.

[0037] Among them, the second lead screw 326 has a right-handed thread (hypothetical) and is used to cooperate with the second lead screw nut 327 on the second slider seat 328 to achieve the linear movement of the second slider seat 328.

[0038] As an implementation manner, the first lead screw 322 and the second lead screw 326 are integrally formed.

[0039] Since the first lead screw 322 and the second lead screw 326 are integrally formed, they can be configured as an integral lead screw. With such a design, the integral lead screw can be beneficial to enhancing the mechanical rigidity and vibration resistance of the connection between the first lead screw 322 and the second lead screw 326, reducing the transmission error, reducing the installation difficulty, and thus improving the working efficiency.

[0040] Optionally, the integral lead screw can be installed on the base 321 through two bearing seats. One end of the integral lead screw passes through one of the bearing seats and is connected to the driving end of the first motor 31.

[0041] As another implementation manner, as Figure 2 shown, the first lead screw 322 and the second lead screw 326 are separately formed. The transmission assembly 32 further includes a locking assembly 35, a first mounting seat group and a second mounting seat group. The first mounting seat group is arranged on the top surface of the base 321 and includes two first mounting seats 36. The two first mounting seats 36 are arranged at intervals in the same horizontal plane. The first guide rail 325 is located between the two first mounting seats 36. The second mounting seat group is arranged on the top surface of the base 321 and includes two second mounting seats 37. The two second mounting seats 37 are arranged at intervals in the same horizontal plane. The second guide rail 329 is located between the two second mounting seats 37. The first end of the first lead screw 322 passes through one of the two first mounting seats 36 and is connected to the driving end of the first motor 31. The second end of the first lead screw 322 passes through the other of the two first mounting seats 36. The first end of the second lead screw 326 passes through one of the two second mounting seats 37 and is connected to the second end of the first lead screw 322 through the locking assembly 35. The second end of the first lead screw 322 is rotatably connected to the other of the two second mounting seats 37.

[0042] Among them, through the provided locking assembly 35, on the one hand, the first lead screw 322 and the second lead screw 326 can be connected so that the two (the first lead screw 322 and the second lead screw 326) can rotate synchronously; on the other hand, it can support quick disassembly and assembly, facilitating the replacement or repair of a certain lead screw (the first lead screw 322 or the second lead screw 326).

[0043] Since the first lead screw 322 and the second lead screw 326 are separately formed, they can be jointly configured as a split lead screw with the locking assembly 35. The first lead screw 322 and the second lead screw 326 can be independently processed and manufactured, facilitating standardized production and inventory management. Moreover, if a certain lead screw is worn or damaged, only the corresponding component needs to be replaced without replacing the whole. In addition, after the split lead screw is disassembled, it is easier to clean, lubricate or calibrate the accuracy of the guide rail, slider and lead screw.

[0044] Among them, the locking assembly 35 can be a coupling, a tapered expansion sleeve, or a quick-locking flange, and the present disclosure does not limit this.

[0045] As an implementation manner of the locking assembly 35, as Figure 3 shown, the locking assembly 35 includes a connecting member 351, a first fastener 352, and a second fastener 353. The connecting member 351 includes a first part 3511, a middle part 3512, and a second part 3513. The first part 3511 and the second part 3513 are respectively connected to both ends of the middle part 3512. A first slot 3514 is formed on the first part 3511, and a second slot 3515 is formed on the second part 3513. External threads are provided on both the first part 3511 and the second part 3513. The first lead screw 322 includes a first screw rod 3221 and a first connecting convex portion 3222 formed on the outer wall of the first screw rod 3221 and protruding outward along the radial direction of the first screw rod 3221. One end of the first screw rod 3221 close to the second lead screw 326 can be inserted into the first slot 3514, so that the first connecting convex portion 3222 abuts against the outer wall of the first part 3511. The first fastener 352 is sleeved on the first screw rod 3221 and the first connecting convex portion 3222, and the first fastener 352 is arranged to be threadedly engaged with the first part 3511. The second lead screw 326 includes a second screw rod 3261 and a second connecting convex portion 3262 formed on the outer wall of the second screw rod 3261 and protruding outward along the radial direction of the second screw rod 3261. One end of the second screw rod 3261 close to the first lead screw 322 can be inserted into the second slot 3515, so that the second connecting convex portion 3262 abuts against the outer wall of the second part 3513. The second fastener 353 is sleeved on the second screw rod 3261 and the second connecting convex portion 3262, and the second fastener 353 is arranged to be threadedly engaged with the second part 3513.

[0046] It should be noted that both the middle parts of the first screw rod 3221 and the second screw rod 3261 have threads, and both ends are smooth.

[0047] Among them, the first fastener 352 is used to fix the connection between the first lead screw 322 and the first part 3511 of the connecting member 351.

[0048] Among them, the second fastener 353 is used to fix the connection between the second lead screw 326 and the second part 3513 of the connecting member 351.

[0049] Specifically, insert one end (the smooth part) of the first screw rod 3221 into the first card slot of the connecting piece 351, so that the first connecting convex part 3222 is in close contact with the outer wall of the first part 3511. Then, use the first fastener 352 (for example, a sleeve with internal threads) to sleeved on the smooth end of the first screw rod 3221 and the first connecting convex part 3222, and tighten it to the external threads of the first part 3511 through thread fitting, thereby pressing the first connecting convex part 3222 to complete the fixation. Similarly, insert one end (the smooth part) of the second screw rod 3261 into the second card slot of the connecting piece 351, so that the second connecting convex part 3262 is in close contact with the outer wall of the second part 3513. Then, use the second fastener 353 (also a sleeve with internal threads) to sleeved on the smooth end of the second screw rod 3261 and the second connecting convex part 3262, and tighten it to the external threads of the second part 3513 through thread fitting, thereby pressing the second connecting convex part 3262 to complete the fixation.

[0050] When the first motor 31 drives the first lead screw 322 to rotate, due to the existence of the connecting piece 351, the second lead screw 326 can also rotate synchronously. The middle threads of the first lead screw 322 and the second lead screw 326 can respectively drive their corresponding slider seats to move along the guide rail, realizing the clamping or releasing operation of the battery cell by the first clamping part 33 and the second clamping part 34. In addition, the smooth two ends can not only reduce the friction force, but also simplify the assembly process.

[0051] As an implementation manner, as Figure 1 、 Figure 2 and Figure 4 shown, the first clamping part 33 includes a second motor 331, a rotary cylinder 332 and a second jaw 333. The second clamping part 34 includes a connecting rod 341 and a positioning part 342. The second motor 331 is installed at the upper end of the first slider seat 324. The driving end of the second motor 331 passes through the first slider seat 324 and is connected to one end of the rotary cylinder 332. A second jaw 333 is arranged at the other end of the rotary cylinder 332. The positioning part 342 is constructed as a multi-stage sleeve structure. The multi-stage sleeve structure includes a first cylinder body 3421, a second cylinder body 3422 and a third cylinder body 3423. The first end of the first cylinder body 3421 is set as an open end. The second end of the first cylinder body 3421 is connected to the first end of the second cylinder body 3422. The second end of the second cylinder body 3422 is connected to the first end of the third cylinder body 3423. The third cylinder body 3423 is set as a closed end. One end of the connecting rod 341 is connected to the closed end. The other end of the connecting rod 341 is connected to the upper end of the second slider seat 328. Among them, the inner diameter of the second cylinder body 3422 is larger than the inner diameter of the third cylinder body 3423 and smaller than the inner diameter of the first cylinder body 3421.

[0052] Among them, since the inner diameters of the first cylinder 3421, the second cylinder 3422, and the third cylinder 3423 show a decreasing trend, that is, the sleeve structure is, from outside to inside, the first cylinder 3421 (large), the second cylinder 3422 (medium), and the third cylinder 3423 (small), an adaptive positioning cavity can be formed. Therefore, the cell to be cut can be inserted into an appropriate cylinder according to its own size and remain stationary, achieving precise clamping. If the diameter of the cell is large, it is inserted into the first cylinder 3421. If the diameter of the cell is medium, it is inserted into the second cylinder 3422. If the diameter of the cell is small, it is inserted into the third cylinder 3423. By setting the multi-stage sleeve structure, the adaptive positioning of the cell can be realized, and it can also be applicable to cells of different sizes. Such a design is beneficial to improving the flexibility and applicability of the cell cutting device of the present disclosure.

[0053] It should be noted that the number of cylinders of the multi-stage sleeve structure can be determined according to actual requirements (such as how many different sizes of cells need to be cut) for production.

[0054] Specifically, in the initial state, the handling mechanism 20 transports the cell to be cut from the storage station to the cutting station. At this time, the first jaw 21 of the handling mechanism 20 is in a state of clamping the cell to be cut, while the first clamping portion 33 and the second clamping portion 34 are in a separated state (that is, the distance between the first clamping portion 33 and the second clamping portion 34 is convenient for the movement of the handling mechanism 20 and the cell to be cut) to prepare for receiving the cell to be cut.

[0055] During the clamping process, the first motor 31 drives the first lead screw 322 and the second lead screw 326 to rotate synchronously, causing the first clamping portion 33 and the second clamping portion 34 to move relative to each other. During the movement of the first clamping portion 33, the second motor 331 can drive the rotary cylinder 332 to rotate, so that the second jaw 333 aligns with one end of the cell to be cut and performs preliminary clamping. At the same time, as the first clamping portion 33 and the second clamping portion 34 move relative to each other, the other end of the cell to be cut gradually inserts into the positioning portion 342 (multi-stage sleeve structure). Then, the second jaw 333 can firmly clamp one end of the cell to be cut, and the other end of the cell to be cut can be automatically positioned in a suitable cylinder according to its own size. Finally, the first jaw 21 of the handling mechanism 20 releases the cell to be cut and moves out of the cutting area to avoid interfering with the laser cutting process. In this way, the first clamping portion 33 and the second clamping portion 34 can clamp the cell to be cut (i.e., the flexible positioning on the passive side). At this time, the first clamping portion 33 and the second clamping portion 34 can restrict the movement of the cell to be cut in the horizontal and vertical directions.

[0056] During the cutting process, the laser cutting head of the laser cutting device 40 can be moved to the cutting station. At this time, the second motor 331 can be used to control the rotating cylinder 332, driving the second jaw 333 and the entire battery cell to rotate around the axis (wherein, one end of the battery cell to be cut away from the second jaw 333 rotates within the multi-stage sleeve structure), so that different cut surfaces of the battery cell to be cut can face the laser cutting head, thereby performing multi-angle cutting.

[0057] After the cutting is completed, the handling mechanism 20 moves to the cutting station and clamps the cut battery cell. At this time, the first motor 31 is controlled to reverse to drive the separation of the first clamping portion 33 and the second clamping portion 34. In this way, the second jaw 333 releases one end of the cut battery cell, and the other end of the cut battery cell disengages from the sleeve structure. Finally, the handling mechanism 20 transports the cut battery cell from the cutting station to the storage station for storage.

[0058] The clamping and rotating mechanism 30 in the present disclosure, in cooperation with the handling mechanism 20 and the laser cutting device 40, can realize the full-process automatic operation of the battery cell from feeding, positioning and clamping, rotating, cutting, releasing, to discharging, so that the battery cell cutting device of the present disclosure has the characteristics of high intelligence, flexibility, and high precision.

[0059] It should be noted that at the cutting station, the axis of the multi-stage sleeve structure, the axis of the battery cell, and the rotation axis of the second jaw 333 are in a coincident state.

[0060] As an implementation manner, as Figure 4 shown, the second clamping portion 34 further includes a first elastic member 343, a second elastic member 344, and a third elastic member 345. The first elastic member 343 is located within the first cylinder 3421 and is connected to the wall of the cavity of the first cylinder 3421. The second elastic member 344 is located within the second cylinder 3422 and is connected to the wall of the cavity of the second cylinder 3422. The third elastic member 345 is located within the third cylinder 3423 and is connected to the wall of the cavity of the third cylinder 3423.

[0061] All the elastic members (the first elastic member 343, the second elastic member 344, and the third elastic member 345) are connected to the inner walls of their respective cylinders to form a deformable support. In this way, even if the battery cell has slight dimensional deviations, the second clamping portion 34 can reliably clamp the other end of the battery cell.

[0062] Among them, the introduction of the elastic member enables the clamping and rotating mechanism 30 to have a certain tolerance ability, which can adapt to different sizes or even slightly bent battery cells. Moreover, the elastic member can absorb the impact force during the clamping process, which can prevent the battery cell from deforming or breaking due to rigid contact. In addition, battery cells of different sizes can automatically enter the corresponding-level cylinders and obtain appropriate clamping force without manual intervention or fixture replacement. Additionally, the elastic member can reduce mechanical shock and can reduce the wear of key components such as the clamping and rotating mechanism 30 (clamping part, guide rail, lead screw, slider seat).

[0063] Optionally, the materials of the first elastic member 343, the second elastic member 344, and the third elastic member 345 can all be silicone, can be rubber, or can also be polyurethane (PU), and the present disclosure does not impose any restrictions thereon.

[0064] As an implementation manner of the elastic member, as Figure 4 shown, the first elastic member 343 can be a first elastic ring extending circumferentially along the inner wall of the cylinder cavity of the first cylinder 3421, the second elastic member 344 can be a second elastic ring extending circumferentially along the inner wall of the cylinder cavity of the second cylinder 3422, and the third elastic member 345 can be a third elastic ring extending circumferentially along the inner wall of the cylinder cavity of the third cylinder 3423.

[0065] Among them, the elastic ring in each cylinder can make the pressure more evenly distributed on the surface of the battery cell, and the uniform pressure distribution can prevent the damage or deformation of the battery cell caused by local stress concentration. Moreover, the elastic ring can provide a larger contact area, thereby enhancing the stability and reliability of the clamping.

[0066] As another implementation manner of the elastic member, the first elastic member 343 includes a plurality of first elastic protrusions, and the plurality of first elastic protrusions are circumferentially spaced along the inner wall of the cylinder cavity of the first cylinder 3421. The second elastic member 344 includes a plurality of second elastic protrusions, and the plurality of second elastic protrusions are circumferentially spaced along the inner wall of the cylinder cavity of the second cylinder 3422. The third elastic member 345 includes a plurality of third elastic protrusions, and the plurality of third elastic protrusions are circumferentially spaced along the inner wall of the cylinder cavity of the third cylinder 3423.

[0067] Among them, the outer wall of the battery cell can come into contact with the plurality of elastic protrusions on the inner wall of the corresponding cylinder. When the elastic protrusions are deformed under pressure, they can generate a reaction force, thereby forming a positioning support or clamping force for the battery cell. Moreover, the plurality of elastic protrusions in a single cylinder are circumferentially distributed, which can make the clamping force be discretely distributed in a point-like manner. When the battery cell has a slight eccentricity or tilt, the elastic protrusions can also play a certain role in self-centering and guiding.

[0068] Optionally, as Figure 2As shown, a protective sleeve 70 can be sleeved on the open end of the first cylinder 3421. With this arrangement, during the insertion of the battery cell, the protective sleeve 70 can effectively absorb the impact force and prevent scratches or damage on the surface of the battery cell caused by hard contact.

[0069] Among them, the material of the protective sleeve 70 can be silicone, can be rubber, or can also be polyurethane (PU), and the present disclosure does not make any restrictions thereon.

[0070] As an implementation manner of the position adjustment mechanism, as Figure 1 shown, the position adjustment mechanism includes an X-axis linear module 221, a Y-axis linear module 222, and a Z-axis linear module 223. The X-axis linear module 221 includes an X-axis frame 2211 and an X-axis driving motor 2212. The Y-axis linear module 222 includes a Y-axis frame 2221 and a Y-axis driving motor 2222. The Z-axis linear module 223 includes a Z-axis frame 2231 and a Z-axis driving motor 2232. The X-axis frame 2211 is installed on the carrying platform 10. An X-axis driving motor 2212 is installed on one side of the X-axis frame 2211 along the negative X-axis direction. The driving end of the X-axis driving motor 2212 is connected to the upper Y-axis frame 2221 through an X-axis lead screw and an X-axis lead screw nut. The driving end of the Y-axis driving motor 2222 is connected to the Z-axis frame 2231 through a Y-axis lead screw and a Y-axis lead screw nut. The driving end of the Z-axis driving motor 2232 is connected to the first jaw 21 through a Z-axis lead screw and a Z-axis lead screw nut.

[0071] Through the mutual cooperation among the provided X-axis linear module 221, Y-axis linear module 222, and Z-axis linear module 223, precise position control can be achieved. With this arrangement, precise movement of the battery cell in three orthogonal directions can be realized, enabling the position adjustment mechanism in the present disclosure to have the advantages of high precision, strong flexibility, and good stability, and being applicable to high-precision operations in an automated production line, such as tasks like handling, cutting, and welding.

[0072] As an implementation manner, as Figure 1As shown, the battery cell cutting device further includes a storage mechanism 50, which includes a loading storage component 51, an unloading storage component 52, and an NG storage component 53. The loading storage component 51 includes a loading drawer 511 and a first slide rail group. The unloading storage component 52 includes an unloading drawer 521 and a second slide rail group. The NG storage component 53 includes an NG drawer 531 and a third slide rail group. The first slide rail group is installed on the bearing platform 10 and includes two first slide rails 512. The two first slide rails 512 are arranged at the same horizontal interval. First chutes extending in the Z-axis direction are respectively formed on the opposite sides of the two first slide rails 512. First sliders 513 are respectively arranged on the opposite sides of the loading drawer 511. The first sliders 513 are slidably engaged in the first chutes (not shown). Among them, the loading drawer 511 is used to accommodate the battery cells to be cut. The second slide rail group is installed on the bearing platform 10 and includes two second slide rails 522. The two second slide rails 522 are arranged at the same horizontal interval. Second chutes 523 extending in the Z-axis direction are respectively formed on the opposite sides of the two second slide rails 522. Second sliders 524 are respectively arranged on the opposite sides of the unloading drawer 521. The second sliders 524 are slidably engaged in the second chutes 523. Among them, the unloading drawer 521 is used to accommodate the cut battery cells. The third slide rail group is installed on the bearing platform 10 and includes two third slide rails 532. The two third slide rails 532 are arranged at the same horizontal interval. Third chutes 533 extending in the Z-axis direction are respectively formed on the opposite sides of the two third slide rails 532. Third sliders 534 are respectively arranged on the opposite sides of the NG drawer 531. The third sliders 534 are slidably engaged in the third chutes 533. Among them, the NG drawer 531 is used to accommodate defective battery cells.

[0073] At the storage station, a loading storage component 51, an unloading storage component 52, and an NG storage component 53 are provided. Among them, the NG storage component 53 is used for isolating and storing defective products, which helps subsequent analysis and processing, thereby improving the quality control ability during the production process.

[0074] It should be noted that the defective battery cells can be in two situations. The first situation can be that the battery cells themselves do not meet the cutting requirements (such as defects like deformation and depression of the battery cells). Therefore, in order to avoid combustion and explosion during the cutting process, the image acquisition component of the control system can cooperate with the clamping and rotating mechanism 30 to perform comprehensive image acquisition and recognition on the battery cells to be cut at the cutting station in advance.

[0075] The second situation can be battery cells with a position deviation, that is, during the transportation process by the transportation mechanism 20, the battery cells change from a horizontally placed state to a slightly inclined state, resulting in the two ends of the battery cells being unable to be accurately aligned with the first clamping portion 33 and the second clamping portion 34 at the cutting station all the time.

[0076] In view of the above two situations, the control system instructs the transfer mechanism 20 to transfer the defective battery cells into the NG drawer 531 to wait for subsequent analysis and processing.

[0077] Optionally, as Figure 5 shown, in order to prevent the leakage of dust, debris or harmful gases generated during the cutting process, the battery cell cutting device may further include a cabinet 60. The cabinet 60 has a receiving cavity for receiving the carrier 10 and various components on the carrier 10. In this way, the battery cell cutting work can be carried out inside the cabinet 60.

[0078] An observation window 61 may be provided on the cabinet 60 to facilitate the staff to inspect the internal work of the cabinet 60 at any time.

[0079] Drawer openings 62 respectively adapted to the loading drawer 511, the unloading drawer 521 and the NG drawer 531 may be formed on the cabinet 60. With this setting, without opening the cabinet 60, the battery cells to be cut, the cut battery cells and the defective battery cells can be quickly taken and placed by pulling out and pushing in the loading drawer 511, the unloading drawer 521 and the NG drawer 531.

[0080] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0081] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination manners.

[0082] In addition, any combination can be made between different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A battery cell cutting device, characterized in that, It includes a carrier table (10), a handling mechanism (20), a clamping and rotating mechanism (30), and a laser cutting device (40); The carrier table (10) is used to support the handling mechanism (20), the clamping and rotating mechanism (30), and the laser cutting device (40); The handling mechanism (20) includes a first jaw (21) and a position adjustment component (22). The position adjustment component (22) is installed on the carrier table (10), and the first jaw (21) is arranged on the position adjustment component (22). The first jaw (21) is used to clamp the battery cell, and the position adjustment component (22) is configured to be able to adjust the position of the first jaw (21) in the horizontal and vertical directions to transport the battery cell to be cut from the storage station to the cutting station or transport the cut battery cell from the cutting station to the storage station; The clamping and rotating mechanism (30) is used to clamp and rotate the battery cell at the cutting station; The laser cutting device (40) is used to cut the battery cell at the cutting station.

2. The cell cutting device according to claim 1, characterized in that, The clamping and rotating mechanism (30) includes a first motor (31), a transmission component (32), a first clamping part (33), and a second clamping part (34); The first clamping part (33) and the second clamping part (34) are arranged opposite to each other along the X-axis direction; The first motor (31) is configured to be able to drive the first clamping part (33) and the second clamping part (34) to move towards or away from each other respectively through the transmission component (32) for clamping the battery cell at the cutting station.

3. The cell cutting device according to claim 2, wherein, The transmission component (32) includes a base (321), a first lead screw (322), a first lead screw nut (323), a first slider seat (324), a first guide rail (325), a second lead screw (326), a second lead screw nut (327), a second slider seat (328), and a second guide rail (329); The base (321) is arranged on the carrier table (10); The first guide rail (325) and the second guide rail (329) are arranged at the same horizontal interval on the top surface of the base (321). The upper end of the first slider seat (324) is provided with the first clamping part (33), the lower end of the first slider seat (324) is slidably connected to the first guide rail (325), the upper end of the second slider seat (328) is provided with the second clamping part (34), and the lower end of the second slider seat (328) is slidably connected to the second guide rail (329); The driving end of the first motor (31) is connected to one end of the first lead screw (322), and the other end of the first lead screw (322) is connected to one end of the second lead screw (326); The first lead screw nut (323) is arranged on the first slider seat (324), and the first lead screw nut (323) is sleeved on the first lead screw (322) and is in screw fit with the first lead screw (322); The second lead screw nut (327) is arranged on the second slider seat (328), and the second lead screw nut (327) is sleeved on the second lead screw (326) and is in screw fit with the second lead screw (326); Wherein, the first lead screw (322) is configured as a left-handed lead screw, and the second lead screw (326) is configured as a right-handed lead screw.

4. The cell cutting device according to claim 3, wherein, The first lead screw (322) and the second lead screw (326) are integrally formed.

5. The cell cutting device according to claim 3, characterized in that, The first lead screw (322) and the second lead screw (326) are separately formed, and the transmission assembly (32) further includes a locking assembly (35), a first mounting seat group and a second mounting seat group; The first mounting seat group is arranged on the top surface of the base (321), and includes two first mounting seats (36). The two first mounting seats (36) are arranged at intervals in the same horizontal plane, and the first guide rail (325) is located between the two first mounting seats (36); The second mounting seat group is arranged on the top surface of the base (321), and includes two second mounting seats (37). The two second mounting seats (37) are arranged at intervals in the same horizontal plane, and the second guide rail (329) is located between the two second mounting seats (37); The first end of the first lead screw (322) passes through one of the two first mounting seats (36) and is connected to the driving end of the first motor (31), and the second end of the first lead screw (322) passes through the other of the two first mounting seats (36); The first end of the second lead screw (326) passes through one of the two second mounting seats (37) and is connected to the second end of the first lead screw (322) through the locking assembly (35), and the second end of the first lead screw (322) is rotatably connected to the other of the two second mounting seats (37).

6. The cell cutting device according to claim 5, wherein, The locking assembly (35) includes a connecting piece (351), a first fastener (352) and a second fastener (353); The connecting piece (351) includes a first part (3511), a middle part (3512) and a second part (3513). The first part (3511) and the second part (3513) are respectively connected to both ends of the middle part (3512). A first slot (3514) is formed on the first part (3511), a second slot (3515) is formed on the second part (3513), and external threads are provided on both the first part (3511) and the second part (3513); The first lead screw (322) includes a first screw rod (3221) and a first connecting convex portion (3222) formed on the outer wall of the first screw rod (3221) and protruding outward along the radial direction of the first screw rod (3221). One end of the first screw rod (3221) close to the second lead screw (326) can be inserted into the first slot (3514) such that the first connecting convex portion (3222) abuts against the outer wall of the first portion (3511). The first fastener (352) is sleeved on the first screw rod (3221) and the first connecting convex portion (3222), and the first fastener (352) is arranged to be threadedly engaged with the first portion (3511). The second lead screw (326) includes a second screw rod (3261) and a second connecting convex portion (3262) formed on the outer wall of the second screw rod (3261) and protruding outward along the radial direction of the second screw rod (3261). One end of the second screw rod (3261) close to the first lead screw (322) can be inserted into the second slot (3515) such that the second connecting convex portion (3262) abuts against the outer wall of the second portion (3513). The second fastener (353) is sleeved on the second screw rod (3261) and the second connecting convex portion (3262), and the second fastener (353) is arranged to be threadedly engaged with the second portion (3513).

7. The core cutting device according to any one of claims 3-6, characterized in that, The first clamping portion (33) includes a second motor (331), a rotary cylinder (332), and a second jaw (333). The second clamping portion (34) includes a connecting rod (341) and a positioning portion (342). The second motor (331) is installed at the upper end of the first slider seat (324). The driving end of the second motor (331) passes through the first slider seat (324) and is connected to one end of the rotary cylinder (332). The second jaw (333) is provided at the other end of the rotary cylinder (332). The positioning portion (342) is configured as a multi-stage sleeve structure. The multi-stage sleeve structure includes a first cylinder body (3421), a second cylinder body (3422), and a third cylinder body (3423). The first end of the first cylinder body (3421) is an open end. The second end of the first cylinder body (3421) is connected to the first end of the second cylinder body (3422). The second end of the second cylinder body (3422) is connected to the first end of the third cylinder body (3423). The third cylinder body (3423) is a closed end. One end of the connecting rod (341) is connected to the closed end, and the other end of the connecting rod (341) is connected to the upper end of the second slider seat (328). Wherein, the inner diameter of the second cylinder body (3422) is greater than the inner diameter of the third cylinder body (3423) and less than the inner diameter of the first cylinder body (3421).

8. The cell cutting device according to claim 7, characterized in that, The second clamping portion (34) further includes a first elastic member (343), a second elastic member (344), and a third elastic member (345). The first elastic member (343) is located inside the first cylinder (3421) and is connected to the wall of the cavity of the first cylinder (3421); The second elastic member (344) is located inside the second cylinder (3422) and is connected to the wall of the cavity of the second cylinder (3422); The third elastic member (345) is located inside the third cylinder (3423) and is connected to the wall of the cavity of the third cylinder (3423).

9. The cell cutting device according to claim 1, characterized in that, The position adjustment mechanism includes an X-axis linear module (221), a Y-axis linear module (222) and a Z-axis linear module (223). The X-axis linear module (221) includes an X-axis frame (2211) and an X-axis driving motor (2212). The Y-axis linear module (222) includes a Y-axis frame (2221) and a Y-axis driving motor (2222). The Z-axis linear module (223) includes a Z-axis frame (2231) and a Z-axis driving motor (2232); The X-axis frame (2211) is mounted on the carrier table (10). An X-axis driving motor (2212) is mounted on one side of the X-axis frame (2211) along the negative X-axis direction. The driving end of the X-axis driving motor (2212) is connected to the upper Y-axis frame (2221) through an X-axis lead screw and an X-axis lead screw nut. The driving end of the Y-axis driving motor (2222) is connected to the Z-axis frame (2231) through a Y-axis lead screw and a Y-axis lead screw nut. The driving end of the Z-axis driving motor (2232) is connected to the first jaw (21) through a Z-axis lead screw and a Z-axis lead screw nut.

10. The cell cutting device according to claim 1, wherein, The battery cell cutting device further includes a storage mechanism (50); The storage mechanism (50) includes a loading storage component (51), an unloading storage component (52) and an NG storage component (53). The loading storage component (51) includes a loading drawer (511) and a first slide rail group. The unloading storage component (52) includes an unloading drawer (521) and a second slide rail group. The NG storage component (53) includes an NG drawer (531) and a third slide rail group; The first slide rail group is mounted on the carrier table (10) and includes two first slide rails (512). The two first slide rails (512) are arranged at intervals on the same horizontal plane. First chutes extending in the Z-axis direction are respectively formed on the opposite sides of the two first slide rails (512). First sliders (513) are respectively arranged on the opposite sides of the loading drawer (511). The first sliders (513) are slidably engaged in the first chutes. Among them, the loading drawer (511) is used to accommodate the battery cells to be cut; The second slide rail group is installed on the carrier table (10) and includes two second slide rails (522). The two second slide rails (522) are arranged at the same horizontal interval. Second chutes (523) extending in the Z-axis direction are respectively formed on one side of the two second slide rails (522) facing each other. Second sliders (524) are respectively arranged on the opposite sides of the blanking drawer (521). The second sliders (524) are slidably engaged in the second chutes (523). Among them, the blanking drawer (521) is used to accommodate the cut battery cells. The third slide rail group is installed on the carrier table (10) and includes two third slide rails (532). The two third slide rails (532) are arranged at the same horizontal interval. Third chutes (533) extending in the Z-axis direction are respectively formed on one side of the two third slide rails (532) facing each other. Third sliders (534) are respectively arranged on the opposite sides of the NG drawer (531). The third sliders (534) are slidably engaged in the third chutes (533). Among them, the NG drawer (531) is used to accommodate defective battery cells.

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