Chip cutting device and battery disassembling equipment

Abstract

The utility model discloses a chip cutting device and battery disassembling equipment. The chip cutting device comprises a movable base, a laser generator and a three-dimensional laser positioning mechanism. The laser generator is arranged on the movable base. And the three-dimensional laser positioning mechanism is arranged on a light emitting path of the laser generator. The three-dimensional laser positioning mechanism comprises a galvanometer deflection unit and a dynamic focusing unit. The galvanometer deflection unit is used for driving a laser beam to deflect in the first direction and the second direction. The dynamic focusing unit is used for driving the focus point of the laser beam to move in the third direction, and the first direction, the second direction and the third direction are perpendicular to one another in pairs. And the galvanometer deflection unit and the dynamic focusing unit are configured to cooperatively work so as to guide a laser focus point to move along a preset path and synchronously perform laser cutting. According to the technical scheme, flexible movement can be achieved, and fine cutting of the battery connecting bar is achieved.

Description

Technical Field

[0001] This application relates to the field of batteries, and in particular to a battery cutting device and battery dismantling equipment. Background Technology

[0002] For the power battery industry, the number of retired power battery packs has increased dramatically over time. Although the cells in the battery packs have experienced capacity degradation, they still meet the requirements for secondary use. In some cases, only a few cells in the battery pack fail, while the remaining cells still have high utilization value. These cells with good electrical performance can be disassembled and reused.

[0003] Battery pack disassembly involves multiple processing techniques, with battery module disassembly being one of the most challenging steps in the entire process. Conventional laser cutting equipment is typically a large, fixed, automated machine that is complex in structure, expensive, and lacks flexibility. Such equipment requires moving the battery modules or packs to be cut to a fixed workstation, making it unsuitable for on-site repairs, small-batch production, or flexible manufacturing scenarios that require the equipment to be moved to the workpiece. Utility Model Content

[0004] In view of the above problems, this application provides a battery strip cutting device and a battery disassembly equipment, which can move flexibly and achieve precise cutting of battery connecting strips.

[0005] In a first aspect, this application provides a laser beam cutting device, including a movable base, a laser generator, and a three-dimensional laser positioning mechanism. The laser generator is mounted on the movable base. The three-dimensional laser positioning mechanism is disposed in the output optical path of the laser generator. The three-dimensional laser positioning mechanism includes a galvanometer deflection unit and a dynamic focusing unit. The galvanometer deflection unit is used to drive the laser beam to deflect in a first direction and a second direction. The dynamic focusing unit is used to drive the focal point of the laser beam to move upward in a third direction, wherein the first direction, the second direction, and the third direction are mutually perpendicular. The galvanometer deflection unit and the dynamic focusing unit are configured to work together to guide the laser focal point to move along a preset path and perform laser cutting synchronously.

[0006] In the technical solution of this application embodiment, by setting a movable base, the equipment can be easily moved to the side of a large, fixed battery device to be cut for operation, eliminating the dependence on fixed large-scale automated production lines. By integrating a three-dimensional laser positioning mechanism including a galvanometer deflection unit and a dynamic focusing unit, the laser focal point can be driven to move precisely along any preset trajectory in three-dimensional space and cut synchronously, realizing high-quality, non-contact processing of battery cells. This solution integrates the precise positioning function of the laser into a compact three-dimensional laser positioning mechanism, replacing the complex multi-axis mechanical motion platform in traditional equipment, making the overall structure simpler, lighter, and easier to manufacture and maintain.

[0007] In some embodiments, the galvanometer deflection unit includes two mutually perpendicularly arranged galvanometer drivers. The output end of each galvanometer driver is connected to a reflecting mirror. The two galvanometer drivers independently drive their respective reflecting mirrors to deflect independently, thereby jointly achieving two-dimensional deflection of the laser beam in a first direction and a second direction. This structure, by using two independently controlled galvanometer drivers to drive the reflecting mirrors, can improve the high-speed deflection speed of the laser beam along any trajectory in the plane and the accuracy of scanning.

[0008] In some embodiments, the dynamic focusing unit includes a focusing motor and a focusing lens assembly driven by the output shaft of the focusing motor. The focusing motor can drive the focusing lens assembly to move, thereby adjusting the focal point of the laser beam in the third direction. This structure, by driving the focusing lens assembly to move with a motor, can quickly and accurately adjust the focal point of the laser beam in the normal direction (third direction) of the working plane, automatically adapting to workpiece surfaces of different heights or with three-dimensional contours, ensuring stable focus and concentrated energy throughout the cutting process.

[0009] In some embodiments, the bar sheet cutting device further includes a positioning indicator module. The indicator beam of the positioning indicator module is coaxial with the cutting laser beam output from the laser generator, and is used to pre-position the initial position of the laser focusing point. This structure, by setting the visible indicator light (such as red light) and the invisible cutting laser as coaxial and sharing a common optical path, allows the operator to directly observe the position of the indicator spot on the workpiece, thereby intuitively and accurately aligning the laser's predetermined cutting point with the target bar sheet welding edge, improving the intuitiveness and positioning accuracy of the operation.

[0010] In some embodiments, the positioning indicator module is a red light indicator unit. With the above structure, the red light has extremely high visual recognition in common industrial environments and on workpiece surfaces, enabling operators to clearly and quickly identify the predetermined laser focal point position. At the same time, the red light has low energy, so it will not cause damage or interference to the workpiece or vision, achieving a balance between safety and efficiency.

[0011] In some embodiments, the laser generator includes a beam modulation module capable of modulating the laser beam generated by the laser generator into at least two types: a Gaussian beam, a flat-top beam, and a time-domain tunable pulsed laser, and selectively outputting one of these types. This structure integrates multiple laser processing capabilities into a single portable device, avoiding the cost and space requirements of equipping different processes with dedicated equipment. This allows a single device to meet the requirements of most laser processing steps in the dismantling of retired battery packs, significantly improving the overall utilization rate and return on investment of the equipment.

[0012] In some embodiments, the laser generator includes a laser body and a heat dissipation assembly, the heat dissipation assembly being used to regulate the temperature of the laser body. The above structure, through active heat dissipation assembly to regulate the temperature of the laser body, can effectively control the operating temperature of the laser diode or gain medium, preventing beam quality degradation, power fluctuations, or wavelength drift caused by excessive temperature rise, thereby ensuring cutting accuracy and process consistency during long-term continuous operation.

[0013] In some embodiments, the blade cutting device further includes a robotic arm assembly, comprising a first robotic arm and a second robotic arm. One end of the first robotic arm is fixedly connected to a movable base. One end of the second robotic arm is rotatably connected to the end of the first robotic arm away from the movable base via a rotating structure, and the other end is fixedly connected to a laser generator. The rotating structure's axis extends along a third direction, and the second robotic arm rotates around this axis. This adjusts the spatial position of the laser generator within a two-dimensional plane defined by the first and second directions. This structure, through the fixed support of the first robotic arm and the rotational cooperation of the second robotic arm around a vertical axis, allows for horizontal adjustment of the laser generator's output end, enabling the device to cover a wider working area from a fixed position. The swing-arm design allows for retraction when not in use, reducing the space occupied by the device. Position adjustment is achieved through rotation after deployment, resulting in a relatively simple structure that helps control overall size and weight while maintaining a certain working range. The robotic arm assembly's movements are intuitive and easy to operate, making it suitable for use in environments requiring flexible adjustment of the working position, thus improving alignment efficiency and human-machine collaboration.

[0014] In some embodiments, a robotic arm support is also connected between the mobile base and the robotic arm assembly. The end of the first robotic arm furthest from the second robotic arm is fixedly connected to the robotic arm support. The robotic arm support is equipped with a lifting and adjusting structure, which drives the robotic arm support to move along a third direction, thereby causing the robotic arm assembly and laser generator to rise and fall synchronously. This structure, by driving the robotic arm support to move vertically through the lifting and adjusting structure, allows for overall height adjustment of the entire robotic arm assembly and laser generator, enabling the equipment to adapt to battery packs of different thicknesses or placement heights, thus expanding the equipment's operational compatibility. Integrating the lifting function into the support structure allows the robotic arm assembly to maintain a relatively fixed posture and connection relationship during height adjustment, which helps reduce end-effector positioning deviations caused by height changes and ensures the repeatability accuracy of laser cutting. The lifting and adjusting mechanism, integrated into the support, has a clear operating position, allowing for coarse height adjustments before or simultaneously with horizontal position adjustments, making the equipment alignment process smoother and improving the efficiency of on-site debugging and work preparation.

[0015] In some embodiments, the bottom of the movable base is provided with movable rollers. The above-described structure, by providing movable rollers at the bottom of the movable base, allows the entire sheet cutting device to be easily moved between different working positions, adapting to scenarios requiring mobile operations next to large or fixed workpieces.

[0016] In some embodiments, a control panel is mounted on the mobile base. The control panel is used to configure laser cutting parameters and control the movement of the three-dimensional laser positioning mechanism. This structure, by integrating the control panel onto the mobile base, allows operators to directly set parameters such as laser power, speed, and cutting path next to the equipment, and control the start, stop, and movement of the three-dimensional laser positioning mechanism, improving the convenience and response speed of work adjustments.

[0017] Secondly, this application provides a battery dismantling device, which includes the battery cutting device in the above embodiments.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of a slab cutting device according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of a three-dimensional laser positioning mechanism according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a laser generator according to one embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the structure of a robotic arm assembly according to an embodiment of this application.

[0024] Detailed Explanation of Reference Numerals

[0025] 1. Cutting device; 2. Movable base; 201. Movable roller; 3. Laser generator; 301. Laser body; 302. Heat dissipation assembly; 4. Three-dimensional laser positioning mechanism; 401. Galvanometer deflection unit; 402. Dynamic focusing unit; 5. Robotic arm assembly; 501. First robotic arm; 502. Second robotic arm; 503. Robotic arm support; 6. Control panel; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0026] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0031] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0032] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to 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 the embodiments of this application.

[0033] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0034] In this application, "multiple" means two or more (including two).

[0035] In the embodiments of this application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0036] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0037] In some embodiments, the battery cell may include a casing. The casing may be a steel casing, an aluminum casing, a plastic casing (such as a polypropylene casing), a composite metal casing (such as a copper-aluminum composite casing), or an aluminum-plastic film, etc. In some embodiments, the casing may be a sealed structure or a non-sealed structure. As an example, when the casing is a non-sealed structure, the casing serves to protect the electrode assembly, and a sealing bag is included between the casing and the electrode assembly to encapsulate the electrode assembly and electrolyte. Specifically, the sealing bag may be a bag-shaped insulating component or an aluminum-plastic film. When the casing is a sealed structure, it is used to encapsulate components such as the electrode assembly and electrolyte.

[0038] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This application does not have any particular limitations.

[0039] In some embodiments, the housing includes an end cap and a casing, the casing having an opening, and the end cap covering the opening. Optionally, the end cap has an injection hole for injecting electrolyte into the casing. The casing may have one or more openings. The end cap may also be provided with one or more.

[0040] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab. The electrode terminal can be directly connected to the tab, or it can be indirectly connected to the tab through a current collector. The electrode terminal can be provided on the end cap or on the housing.

[0041] As batteries complete their service life, the number of retired battery devices continues to grow. The individual battery cells within a battery pack often exhibit uneven performance degradation: some cells, while experiencing capacity reduction, can still meet the requirements for secondary use; in other cases, only a few cells fail, while the remaining cells still possess significant residual value. Disassembling and reusing these intact battery cells is a crucial step in achieving efficient battery resource recycling.

[0042] Battery cells and battery cell modules are electrically connected via connectors (electrical connectors). In the battery pack disassembly process, connectors are typically welded to the electrode terminals of the battery cells, resulting in a strong and secure connection. Therefore, the non-destructive and precise disassembly of connectors is a crucial step in ensuring the reusability of battery cells and is also one of the key challenges in the process. Currently, most common connector disassembly devices are fixed, large-scale, and automated designs. These devices are bulky, have fixed locations, and cannot be flexibly deployed to battery pack storage sites. Furthermore, such equipment is usually designed for specific cell and connector layouts, making it difficult to adapt to battery packs of different sizes and arrangements. This results in poor equipment versatility, limited application scope, and high purchase and maintenance costs.

[0043] Based on the above, this application provides a battery chip cutting device. By setting a movable base, the device can be easily moved to a large, fixed battery device to be cut, eliminating the reliance on fixed large-scale automated production lines. By integrating a three-dimensional laser positioning mechanism including a galvanometer deflection unit and a dynamic focusing unit, the laser focal point can be driven to move precisely along any preset trajectory in three-dimensional space and cut synchronously, achieving high-quality, non-contact processing of battery chips. This solution integrates the precise positioning function of the laser into a compact three-dimensional laser positioning mechanism, replacing the complex multi-axis mechanical motion platform in traditional equipment, making the overall structure simpler, lighter, and easier to manufacture and maintain.

[0044] The following is a detailed description of the metal sheet cutting device of this application with reference to the accompanying drawings. Figures 1 to 4 , Figure 1 This is a schematic diagram of the structure of a slab cutting device according to an embodiment of this application. Figure 2 This is a schematic diagram of the structure of a three-dimensional laser positioning mechanism according to an embodiment of this application. Figure 3 This is a schematic diagram of the structure of a laser generator according to one embodiment of this application. Figure 4 This is a schematic diagram of the structure of a robotic arm assembly according to an embodiment of this application.

[0045] As shown in the figure, an embodiment of this application provides a slab cutting device 1, including a movable base 2, a laser generator 3, and a three-dimensional laser positioning mechanism 4. The laser generator 3 is disposed on the movable base 2. The three-dimensional laser positioning mechanism 4 is disposed on the output optical path of the laser generator 3. The three-dimensional laser positioning mechanism 4 includes a galvanometer deflection unit 401 and a dynamic focusing unit 402. The galvanometer deflection unit 401 is used to drive the laser beam to deflect in a first direction X and a second direction Y. The dynamic focusing unit 402 is used to drive the focal point of the laser beam to move in a third direction Z, wherein the first direction X, the second direction Y, and the third direction Z are mutually perpendicular. The galvanometer deflection unit 401 and the dynamic focusing unit 402 are configured to work together to guide the laser focal point to move along a preset path and perform laser cutting synchronously.

[0046] The mobile base 2 serves as the support and moving platform for the entire device, enabling the equipment to have basic displacement capabilities and facilitating deployment to different work locations. For example, it can be a trolley-type structure with wheels and handles, making it easy to push and position manually, and move it next to a large battery device.

[0047] Laser generator 3 generates the high-energy laser beam required for cutting. For example, it can be a fiber laser or a solid-state laser, with output wavelength, power, and pulse characteristics suitable for cutting metal sheets. Three-dimensional laser positioning mechanism 4 receives the beam output from laser generator 3 and performs precise and rapid three-dimensional control of its focal point. Galvanometer deflection unit 401 controls the deflection angle of the laser beam in two mutually perpendicular horizontal directions (such as the X-axis and Y-axis) using two high-speed deflectable mirrors, thereby achieving two-dimensional positioning and trajectory scanning within the working plane. Dynamic focusing unit 402 drives the lens group along the optical axis via a motor, changing the focusing state of the beam and thus precisely controlling the position of the focal point in a direction perpendicular to the working plane (such as the Z-axis).

[0048] Optionally, the laser cutting device 1 may also include a control system electrically connected to the three-dimensional technician positioning mechanism and the laser generator 3. The control system is used to coordinate the movement of the galvanometer deflection unit 401 and the dynamic focusing unit 402, so that the laser focal point can move along a preset three-dimensional spatial trajectory and simultaneously emit light to complete the cutting during the movement.

[0049] In one example, the operator pushes the device next to the battery pack to be disassembled via the movable base 2, and roughly aligns the output of the 3D laser positioning mechanism 4 with the plate area using mechanical means (such as an adjustable support or robotic arm). The control system instructs the dynamic focusing unit 402 to operate, adjusting the laser focus to the reference working plane where the plate surface is located. The control system generates a corresponding cutting trajectory program based on the shape and position of the plate welding points. The galvanometer deflection unit 401 drives the laser focus at high speed to move along the weld edge contour of the plate in the XY plane. For example, if the plate surface is uneven (such as with weld protrusions), the dynamic focusing unit 402 fine-tunes the position of the focus in the Z direction in real time to ensure that the focus always falls on the plate surface, maintaining the optimal cutting energy density. Throughout the focus movement, the laser continues to emit light, completing the continuous and precise cutting of the plate. After the cutting of this area is completed, the movable base 2 can be pushed to move the device to the next position of the battery pack, and the above process can be repeated.

[0050] In the technical solution of this application embodiment, by setting a movable base 2, the equipment can be easily moved to the side of a large, fixed battery device to be cut for operation, eliminating the dependence on fixed large-scale automated production lines. By integrating a three-dimensional laser positioning mechanism 4 including a galvanometer deflection unit 401 and a dynamic focusing unit 402, the laser focal point can be driven to move precisely along any preset trajectory in three-dimensional space and cut synchronously, realizing high-quality, non-contact processing of battery cells. This solution integrates the precise positioning function of the laser into a compact three-dimensional laser positioning mechanism 4, replacing the complex multi-axis mechanical motion platform in traditional equipment, making the overall structure simpler, lighter, and easier to manufacture and maintain.

[0051] In some embodiments of this application, the galvanometer deflection unit 401 includes two galvanometer drivers arranged perpendicularly to each other. The output end of each galvanometer driver is connected to a reflective mirror. The two galvanometer drivers drive the corresponding reflective mirrors to deflect independently, so as to jointly realize the two-dimensional deflection of the laser beam in the first direction X and the second direction Y.

[0052] Two galvanometer drivers receive electrical signals from the control system and convert them into precise mechanical angular displacement outputs. Each driver independently controls the beam deflection in one direction. Examples typically include high-precision galvanometer motors or digital galvanometer motors, characterized by fast response, high positioning accuracy, and programmable control.

[0053] Two reflective mirrors, fixed to the output shafts of their respective galvanometer drivers, are used to reflect the laser beam. The deflection angle of the mirrors directly changes the exit direction of the laser beam. For example, a high-reflectivity dielectric film reflector optimized for the laser wavelength (e.g., 1064nm) can be used to withstand high-power lasers and ensure beam quality.

[0054] The rotation axes of the two galvanometer drivers (along with their reflecting mirrors) are arranged perpendicularly at 90 degrees in space, thereby decomposing the laser deflection onto two mutually perpendicular coordinate axes, achieving full coverage scanning of a two-dimensional plane. For example, the rotation axis of the first galvanometer (such as the X-galvanometer) is responsible for the left-right deflection of the beam; the rotation axis of the second galvanometer (such as the Y-galvanometer) is responsible for the front-back deflection of the beam.

[0055] The control system decomposes the four sides of the rectangle into a series of coordinate points in the X and Y directions. Based on these coordinate points, the control system calculates the required rotation angles of the two galvanometer drivers and generates corresponding drive voltage signals. When the laser focus needs to move in the first direction X, the X-mirror driver drives its reflector to deflect accordingly. When the laser focus needs to move in the second direction Y, the Y-mirror driver drives its reflector to deflect accordingly. When the laser focus needs to move along an oblique line, the two galvanometer drivers deflect synchronously and proportionally, achieving vector synthesis motion of the laser beam. After the laser beam is reflected by the X and Y mirrors, its exit direction is precisely controlled, thus ensuring that the light spot focused on the working plane moves strictly along a preset path.

[0056] The rotating components (reflecting mirrors) of the galvanometer drive are lightweight and have low inertia, enabling start-stop and angle changes within milliseconds, achieving high-speed movement of the laser focus on the working plane. Compared to mechanical motion systems that require moving the entire laser head or worktable, this system offers faster scanning speeds and better dynamic response. Beam deflection is controlled solely by minute angle changes in the reflecting mirrors; the system has no mechanical transmission chain, avoiding positioning errors caused by gear backlash and lead screw hysteresis. This unit integrates two-dimensional planar motion functions into a compact optical module, replacing traditional XY cross slides or gantry structures, reducing the mechanical complexity, space occupation, and motion mass of the equipment, laying the foundation for lightweight and portable design. Through the coordinated control of two independent axes, the laser focus can achieve linear, circular, and arbitrarily complex curved trajectory movements. By simply changing the control program, it can adapt to the cutting requirements of different shaped blades, improving the equipment's process adaptability.

[0057] The above structure, which drives the reflecting mirrors through two independently controlled galvanometer drivers, can improve the high-speed deflection speed of the laser beam along any trajectory in the plane and the scanning accuracy.

[0058] In some embodiments of this application, the dynamic focusing unit 402 includes a focusing motor and a focusing lens group that is driven to the output shaft of the focusing motor. The focusing motor can drive the focusing lens group to move in order to adjust the position of the focal point of the laser beam in the third direction Z.

[0059] The focusing motor, acting as the drive source, receives commands from the control system and provides precise linear or curvilinear motion output to drive the focusing lens assembly to move along the optical axis. For example, a stepper motor or servo motor can be used. The focusing lens assembly, composed of one or more optical lenses, is located in the laser optical path. Its position change along the optical axis alters the convergence state of the laser beam, thereby adjusting the focal point's position in the beam transmission direction (the third direction Z, vertical). Exemplarily, the focusing lens assembly is typically a positive lens assembly, possibly containing a combination of beam expanders, collimators, and focusing lenses, designed to maintain excellent spot quality within a specific working distance range.

[0060] Optionally, the dynamic focusing unit 402 also includes a transmission connection mechanism that precisely transmits the rotational or linear output motion of the focusing motor to the focusing lens group, and may include a guide structure to ensure the straightness and stability of the lens group's movement. Common examples include lead screw and nut pairs, gear and rack mechanisms, linear guide slider combinations, or directly using an integrated linear motor structure.

[0061] Through a preset program (using a known 3D model of the plaster) or real-time measurement (e.g., using a rangefinder sensor), the system identifies that the working surface height at the current cutting point has risen by ΔZ relative to the reference surface. Based on the ΔZ value, the control system calculates the distance ΔL that the focusing lens group needs to move along the optical axis to ensure the laser focus falls back on the raised surface. The focusing motor, acting on instructions, drives the focusing lens group to precisely move ΔL via a transmission mechanism. Throughout the cutting process of the raised area, the dynamic focusing unit 402 continuously fine-tunes the lens group position based on the height information (or real-time feedback) of each point on the preset trajectory, ensuring the laser focus always closely follows the undulations of the plaster surface. After completing the cutting of the raised area, the lens group returns to the reference position, ready for the cutting of the next flat area.

[0062] Position control via a motor-driven lens assembly allows for proactive and rapid alteration of the laser beam's focusing plane, making the focal point's position in the third direction (Z, depth) a programmable variable, rather than relying solely on fixed optical settings. When cutting workpieces with three-dimensional shapes (such as uneven welded plates or battery packs with assembly tolerances), this unit can adjust the focal depth in real time, ensuring it remains on the workpiece surface. This avoids problems like decreased laser energy density, wider kerf, or incomplete cuts caused by defocusing, resulting in uniform, high-quality cutting along the entire cutting path. Working in conjunction with the galvanometer deflection unit 401 responsible for two-dimensional planar scanning, this unit provides third-dimensional control capabilities. The combination of these three elements enables the laser focal point to move along any preset trajectory in three-dimensional space, achieving complete and precise machining of three-dimensional contour workpieces (such as plates with curves or steps).

[0063] The aforementioned structure, through the movement of the focusing lens group driven by the motor, can quickly and accurately adjust the position of the laser beam's focal point in the normal direction (third direction Z) of the working plane, automatically adapting to workpiece surfaces of different heights or with three-dimensional contours, ensuring stable focal point and concentrated energy throughout the cutting process.

[0064] In some embodiments of this application, the film cutting device 1 further includes a positioning indicator module, wherein the indicator beam of the positioning indicator module is coaxial with the cutting laser light path output by the laser generator 3, and is used to pre-position the initial position of the laser focusing point.

[0065] An indicator light source generates a beam of visible light to indicate the position of the laser's focal point. This light source typically has a different wavelength than the cutting laser and lower power, making it safe for the human eye. Commonly used are red semiconductor laser diodes (red light indicators) with wavelengths of 635nm or 650nm, due to their high brightness, low cost, and sensitivity to the human eye. Other visible light lasers or LEDs combined with collimating optical systems can also be used.

[0066] Optionally, the positioning indicator module also includes a beam-combining optical element. This element combines the indicator beam and the invisible cutting laser beam into the same optical path, ensuring that both beams exit from the same output port and their optical axes are strictly aligned. A dichroic mirror is typically used. This mirror has high transmittance (or high reflectivity) to the cutting laser wavelength and high reflectivity (or high transmittance) to the indicator light wavelength, thus achieving spatial beam combining of the two beams. A fiber optic combiner can also be used.

[0067] Optionally, the positioning indicator module also includes a control and drive circuit to power the indicator light source and control its switching, enabling brightness adjustment and linkage control logic with the main laser. A simple constant current drive circuit or a control channel integrated on the device's main control board can be used.

[0068] When cutting the wafer, the operator activates the positioning indicator module via the control panel or buttons, putting the cutting laser in standby mode. The visible indicator light (e.g., red light) shares the same optical path as the cutting laser, forming a visible spot on the working surface after passing through the 3D laser positioning mechanism 4. The operator observes this spot and, through control (possibly manual adjustment or automatic focusing), makes it the smallest and clearest on the working surface, ensuring both the indicator light and the cutting laser are focused on the working plane. The operator controls the galvanometer system to move the visible spot across the wafer surface, previewing the preset cutting path and ultimately moving the spot to the cutting start point. This process helps confirm the correctness of the cutting path and whether obstacles have been avoided. After confirming the position is correct, the operator triggers the "cutting start" command. The control system may automatically turn off the indicator light (or dim it) and simultaneously activate the cutting laser, starting the laser cutting along the preset path. After cutting is complete, the indicator light can be turned back on to check the cutting result using the spot.

[0069] With coaxial visible light indication, operators can directly and clearly see the precise location where the laser will strike, achieving a "what you see is what you get" effect. This avoids misalignment that can occur when relying on invisible infrared lasers, improving operational safety and intuitiveness. The clarity of the visible light spot assists in manual or visual focusing. Driving the light spot movement allows for a preview of the entire cutting trajectory, enabling operators to confirm the rationality of the path planning before actual processing, and promptly identify and avoid cutting errors caused by program mistakes or workpiece placement deviations. This module transforms the high-precision laser positioning process into an intuitive "spot alignment" operation, reducing reliance on operators reading complex coordinates or relying on other indirect alignment tools (such as camera image analysis), making the equipment easier and faster to use on-site. During non-processing periods such as debugging and alignment, a low-power indicator light is used instead of a high-power cutting laser for scanning and positioning, reducing unnecessary wear and tear on the cutting laser and its optical components, and lowering safety risks.

[0070] The above structure, by setting the visible indicator light (such as red light) and the invisible cutting laser as a coaxial common optical path, allows the operator to directly observe the position of the indicator light spot on the workpiece, thereby intuitively and accurately aligning the laser's predetermined cutting point with the target plate welding edge, improving the intuitiveness and positioning accuracy of the operation.

[0071] In some embodiments of this application, the positioning indicator module is a red light indicator unit.

[0072] When the operator cuts the wafer, they activate the "red light indicator" function, illuminating the red laser diode and emitting a red laser beam. After collimation, the red light is reflected by a dichroic mirror and enters the main optical path, becoming perfectly coaxial with the transmitted infrared cutting laser. This composite beam then passes through a galvanometer and focusing system, presenting a distinct red spot on the work surface. The operator uses this red spot for focusing (observing the smallest and roundest spot) and alignment. Red provides strong contrast against most industrial backgrounds (metal, dark workpieces), making it easily identifiable. The red spot is then used to preview the cutting path. Once ready, the processing command is triggered; the control system typically shuts off the red diode and simultaneously activates the infrared cutting laser.

[0073] With the above-described structure, the red light has extremely high visual recognition in common industrial environments and on workpiece surfaces, enabling operators to clearly and quickly identify the laser's predetermined focal point. At the same time, the red light has low energy and will not cause damage or interference to the workpiece or vision, thus achieving a balance between safety and efficiency.

[0074] In some embodiments of this application, the laser generator 3 includes a beam modulation module, which can modulate the laser beam generated by the laser generator 3 into at least two types, namely a Gaussian beam, a flat-top beam, and a time-domain tunable pulsed laser, and can selectively output one of them.

[0075] For example, suppose we need to process two different types of sheets: one is a thin aluminum strip, which requires minimal heat-affected zone; the other is a thick copper-nickel composite sheet, which requires efficient cutting.

[0076] When cutting thin aluminum strips, the operator selects the "flat-top beam + short pulse" mode on the control panel. The beam modulation module is configured to activate the flat-top beam shaping unit and set the laser to a short-pulse, high-repetition-rate MOPA pulse mode. The laser outputs a flat-top short-pulse laser with uniform energy distribution. The flat-top beam ensures a uniform cutting edge, while the short pulse reduces heat conduction, achieving high-quality, low-thermal-affected zone cutting of thin aluminum strips.

[0077] For example, when cutting thick copper-nickel composite sheets, the operator switches to "Gaussian beam + long pulse / continuous" mode. The beam modulation module shuts down or removes the flat-top shaping element, maintaining the original Gaussian laser distribution, and switches the laser to long pulse or quasi-continuous mode. The laser outputs high-energy-density Gaussian long pulse / continuous laser light. The Gaussian beam has concentrated energy at the center, which is beneficial for penetrating thicker materials; the long pulse or continuous mode provides higher average power and greater single-pulse energy, enabling efficient cutting of thick materials.

[0078] The aforementioned structure integrates multiple laser output modes, including Gaussian beam, flat-top beam, and tunable pulsed beam, into a single device. This allows for flexible selection of the most suitable laser beam for cutting or cleaning based on the material, thickness, and connection status of the battery pack, effectively addressing the complexities of battery packs with varying specifications and diverse process requirements. The Gaussian beam boasts the highest energy density at its center, suitable for deep-penetration cutting and efficient penetration of thicker or highly reflective materials (such as copper). The flat-top beam offers uniform energy distribution, reducing the thermal gradient at the cutting edge, resulting in a more perpendicular and smooth cut surface with a smaller heat-affected zone, making it suitable for precision cutting of thin sheets or applications requiring high edge quality. The time-domain tunable pulsed laser allows for precise control of the energy input rate by adjusting the pulse width and frequency. Short pulses help reduce the heat effect, while long pulses improve material removal rates. Flexible time-domain control helps address the differences in thermophysical properties between different metals. This module integrates multiple laser processing capabilities into a single portable device, avoiding the cost and space requirements of equipping different processes with dedicated equipment. This allows a single device to meet the requirements of most laser processing steps in the dismantling of retired battery packs, significantly improving the overall utilization rate and return on investment of the equipment.

[0079] In some embodiments of this application, the laser generator 3 includes a laser body 301 and a heat dissipation component 302, the heat dissipation component 302 being used to regulate the temperature of the laser body 301. Exemplarily, the heat dissipation component 302 includes an air-cooled heat dissipation device, a liquid-cooled system, or a thermoelectric cooler, etc.

[0080] The above-described structure, through the active heat dissipation component 302, regulates the temperature of the laser body 301, which can effectively control the operating temperature of the laser diode or gain medium, prevent beam quality degradation, power fluctuation or wavelength drift caused by excessive temperature rise, thereby ensuring cutting accuracy and process consistency under long-term continuous operation.

[0081] In some embodiments of this application, the film cutting device 1 further includes a robotic arm assembly 5, which includes a first robotic arm 501 and a second robotic arm 502. One end of the first robotic arm 501 is fixedly connected to the movable base 2. One end of the second robotic arm 502 is rotatably connected to the end of the first robotic arm 501 away from the movable base 2 via a rotating structure, and the other end is fixedly connected to the laser generator 3. The rotating structure's axis extends along a third direction Z, and the rotation of the second robotic arm 502 around this axis adjusts the spatial position of the laser generator 3 within a two-dimensional plane defined by the first direction X and the second direction Y.

[0082] The first robotic arm 501 serves as the base arm of the entire robotic arm assembly 5, providing basic length extension and rigid support. One end is fixed to the movable base 2, establishing the rotation center and radius of the entire arm assembly's working range. For example, the first robotic arm 501 can be a rigid arm of fixed length, with internal wiring (laser fiber, control cables), typically made of lightweight, high-strength aluminum alloy or carbon fiber composite material. The second robotic arm 502 is the actuator arm, its end bearing the three-dimensional laser positioning mechanism 4. It rotates around a fixed axis, responsible for angle adjustment in the plane. The second robotic arm 502 is another rigid arm, similar to the first robotic arm 501, but possibly different in length. Its end is designed with an interface for mounting loads such as a laser scanning head.

[0083] The rotating structure is used to enable the rotational movement of the second robotic arm 502 relative to the first robotic arm 501, ensuring that the axis of rotation is strictly parallel to the third direction Z (vertical direction). It needs to provide sufficient rotational freedom, precision, and locking capability. The rotating structure can be a rotary joint with precision bearings, coupled with a manual locking knob or an electric braking device.

[0084] Optionally, the robotic arm assembly 5 also includes a base connection structure for securely fixing the first robotic arm 501 to the movable base 2 and for withstanding the torque generated by the second robotic arm 502 and the end-effector load. For example, the base connection structure may include a robust flange or a mounting base with reinforcing ribs.

[0085] When it is necessary to cut the plates at different positions on the battery device, the operator first pushes the movable base 2 to a general position next to the battery pack, and then unfolds the first robotic arm 501 and the second robotic arm 502 from the storage state.

[0086] Subsequently, the operator manually or via a motor-driven rotating mechanism rotates the second robotic arm 502 around its vertical axis. When the angle between the second robotic arm 502 and the first robotic arm 501 is 0° (fully folded), the laser head is closest to the base. As the angle increases, the laser head moves along an arc trajectory with the connection point between the first robotic arm 501 and the base as the center and the length of the second robotic arm 502 as the radius. Combined with the possible extension or swing of the first robotic arm 501 (if designed), the reach of the laser head covers a fan-shaped or partially annular area centered on the base. By rotating the second robotic arm 502, the laser output port is roughly aligned above the first area to be cut on the battery pack. Then, the three-dimensional laser positioning mechanism 4 (galvanometer and dynamic focusing) takes over, performing micron-level precise positioning and trajectory scanning of the laser focus to complete the cutting of the battery pack. Rotating the second robotic arm 502 quickly moves the laser head to the vicinity of the next battery pack area, repeating the precision cutting process.

[0087] The aforementioned structure, through the fixed support of the first robotic arm 501 and the rotational cooperation of the second robotic arm 502 around the vertical axis, allows for horizontal adjustment of the position of the light-emitting end of the laser generator 3, enabling the equipment to cover a wider working area from a fixed position. The swing-arm design allows for retraction when not in use, reducing the space occupied by the equipment; when extended, position adjustment is achieved through rotation. The structure is relatively simple, facilitating control of overall size and weight while maintaining a certain working range. The robotic arm assembly 5 is intuitive and easy to operate, suitable for use in on-site environments requiring flexible adjustment of working positions, contributing to improved alignment efficiency and human-machine collaboration convenience.

[0088] In some embodiments of this application, a robotic arm support 503 is also connected between the mobile base 2 and the robotic arm assembly 5. The end of the first robotic arm 501 away from the second robotic arm 502 is fixedly connected to the robotic arm support 503. The robotic arm support 503 is provided with a lifting adjustment structure, which is used to drive the robotic arm support 503 to move along the third direction Z, thereby driving the robotic arm assembly 5 and the laser generator 3 to lift synchronously.

[0089] The robotic arm support 503 serves as an intermediate structure connecting the movable base 2 and the robotic arm assembly 5. It transmits the weight and torque of the robotic arm assembly 5 and its load (laser generator 3 / emitting head) to the base and provides a mounting foundation and guide for lifting and adjustment. Exemplarily, the robotic arm can be constructed as a robust column or box structure, potentially integrating lifting mechanism components internally, with external mounting interfaces for the base and robotic arm. The lifting and adjustment structure provides the driving force, enabling the robotic arm support 503 to move smoothly and precisely relative to the movable base 2 in the vertical direction (third direction Z), thereby achieving overall height adjustment of the entire upper mechanism. Examples of lifting and adjustment mechanisms include ball screw pairs driven by servo motors or stepper motors, rack and pinion mechanisms, or scissor lift mechanisms. Alternatively, it can be a worm gear lift with a handle, a hand crank, or a gas spring-assisted locking adjustment lever.

[0090] When disassembling battery devices at different heights or placed on pads, the operator first observes the average working plane height of the plate on the battery pack to be disassembled. The operator can input the target height on the control panel or continuously press and hold the up / down button. The lifting adjustment mechanism (such as a motor-driven lead screw) is activated, driving the entire robotic arm support 503 and the first and second robotic arms 502 fixed thereon, laser generator 3, etc., to rise or fall synchronously and smoothly. When the laser output port is adjusted to a height approximately suitable for the working plane of the battery pack (for example, slightly higher than the plate, leaving room for subsequent dynamic focusing), the coarse height adjustment stops. Then, coarse planar positioning is performed by the horizontal rotation of the robotic arm group 5, and finally, the dynamic focusing unit 402 in the three-dimensional laser positioning mechanism 4 completes the final micron-level precise focusing of the working distance and begins scanning and cutting.

[0091] The aforementioned structure, through a lifting and adjusting mechanism driving the robotic arm support 503 to move vertically, allows for overall height adjustment of the entire robotic arm assembly 5 and laser generator 3. This enables the equipment to adapt to battery packs of different thicknesses or placement heights, expanding its operational compatibility. Integrating the lifting function into the support structure ensures that the robotic arm assembly 5 maintains a relatively fixed posture and connection relationship during height adjustment, reducing end-effector positioning deviations caused by height changes and guaranteeing the repeatability accuracy of laser cutting. The lifting and adjusting mechanism, integrated into the support, provides a clear operating position, allowing for coarse height adjustments before or simultaneously with horizontal adjustments. This facilitates a smoother equipment alignment process and improves the efficiency of on-site commissioning and preparation.

[0092] In some embodiments of this application, the bottom of the movable base 2 is provided with movable rollers 201. The above-described structure, by providing movable rollers 201 at the bottom of the movable base 2, allows the entire sheet cutting device 1 to be easily moved between different working positions, adapting to scenarios where mobile operations are required next to large or fixed workpieces.

[0093] In some embodiments of this application, a control panel 6 is mounted on the mobile base 2. The control panel 6 is used to configure laser cutting parameters and control the movement of the three-dimensional laser positioning mechanism 4. With the above structure, by integrating the control panel 6 onto the mobile base 2, operators can directly set parameters such as laser power, speed, and cutting path next to the equipment, and control the start, stop, and movement of the three-dimensional laser positioning mechanism 4, improving the convenience and response speed of work adjustments.

[0094] In some optional embodiments, the blister cutting device 1 includes a movable base 2, a laser generator 3, and a three-dimensional laser positioning mechanism 4. The laser generator 3 is mounted on the movable base 2. A control panel 6 is mounted on the movable base 2, which is used to configure laser cutting parameters and control the operation of the three-dimensional laser positioning mechanism 4. A moving roller 201 is provided at the bottom of the movable base 2. The three-dimensional laser positioning mechanism 4 is located in the light output path of the laser generator 3. The three-dimensional laser positioning mechanism 4 includes a galvanometer deflection unit 401 and a dynamic focusing unit 402. The galvanometer deflection unit 401 is used to drive the laser beam to deflect in a first direction X and a second direction Y. The dynamic focusing unit 402 is used to drive the focal point of the laser beam to move in a third direction Z, where the first direction X, the second direction Y, and the third direction Z are mutually perpendicular. The galvanometer deflection unit 401 and the dynamic focusing unit 402 are configured to work together to guide the laser focal point to move along a preset path and perform laser cutting synchronously. The laser generator 3 includes a laser body 301 and a heat dissipation assembly 302, which is used to regulate the temperature of the laser body 301. The slab cutting device 1 also includes a robotic arm assembly 5, which includes a first robotic arm 501 and a second robotic arm 502. One end of the first robotic arm 501 is fixedly connected to the movable base 2. One end of the second robotic arm 502 is rotatably connected to the end of the first robotic arm 501 away from the movable base 2 via a rotating structure, and the other end is fixedly connected to the laser generator 3. The rotating structure's axis extends along a third direction Z, and the rotation of the second robotic arm 502 around this axis adjusts the spatial position of the laser generator 3 within a two-dimensional plane defined by the first direction X and the second direction Y. A robotic arm support 503 is also connected between the mobile base 2 and the robotic arm assembly 5. The end of the first robotic arm 501 away from the second robotic arm 502 is fixedly connected to the robotic arm support 503. The robotic arm support 503 is provided with a lifting and adjusting structure. The lifting and adjusting structure is used to drive the robotic arm support 503 to move along the third direction Z, thereby driving the robotic arm assembly 5 and the laser generator 3 to lift and lower synchronously.

[0095] Embodiments of this application also provide a battery dismantling device, which includes the battery cell cutting device 1 described in the above embodiments. Exemplarily, the battery dismantling device further includes a battery pack dismantling unit, a module dismantling unit, a battery cell processing unit, and a central control system. The battery pack dismantling unit is responsible for removing the battery pack's top cover, side panels, wiring harnesses, cooling pipes, and other external structures. The module dismantling unit separates the modules within the battery pack. The battery cell processing unit detects, sorts, and stores the cut-off cells. The central control system coordinates the actions of the battery cell cutting device 1 and other units, managing the entire dismantling process.

[0096] In an example of battery pack dismantling, a retired battery pack is transported to the equipment, where other units remove the casing, wiring harnesses, etc., exposing the internal modules and cells. The battery modules are fixed or positioned within the working area of ​​the cell cutting device 1. The operator or the central control system instructs the cell cutting device 1 to begin operation. The device's mobile base 2 is driven (or manually pushed) to the target module. Following the aforementioned process, the cell cutting device 1 uses its robotic arm for coarse positioning and 3D laser precision positioning to laser-cut all the cells on the module, either individually or in groups, breaking the electrical connections between the cells. After the cell cutting is complete, other units remove the separated cells for further inspection or recycling. The device can then move to the next module for repeated operation. The central control system manages the entire process from battery pack loading to cell removal, ensuring that the cell cutting device 1 operates at the correct time and in the correct location.

[0097] The aforementioned technical solution integrates the battery cell cutting device 1 into the dismantling equipment, directly solving the most critical and difficult problem of battery cell separation in the battery dismantling process. Its non-contact, high-precision laser cutting method maximizes the protection of the electrode terminals of the battery cells, creating favorable conditions for the secondary use or recycling of battery cells. Compared to purely manual or semi-automatic mechanical cutting and grinding methods, the introduction of an automated and intelligent laser cutting module significantly improves the accuracy, consistency, and safety of the battery cell dismantling process. Because the battery cell cutting device 1 itself is portable, adjustable, and highly compatible, its integration as a module allows the entire dismantling equipment to more easily adapt to battery packs of different models, sizes, and layouts, reducing the difficulty and cost of equipment replacement.

[0098] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tablet cutting device, characterized in that, The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device.

2. The bar cutter apparatus of claim 1, wherein, The application relates to a battery disassembling device.

3. The bar cutter apparatus of claim 1, wherein, The application relates to a battery disassembling device.

4. The bar cutting apparatus according to any one of claims 1 to 3, wherein The application relates to a battery disassembling device.

5. The bar cutter apparatus of claim 4, wherein, The application relates to a battery disassembling device.

6. The bar cutter apparatus of claim 5, wherein, The application relates to a battery disassembling device.

7. The bar cutter apparatus of claim 6, wherein, The application relates to a battery disassembling device.

8. The bar cutting apparatus of any one of claims 1-3, wherein, The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device.

9. The bar cutter apparatus of claim 8, wherein, The application relates to a battery disassembling device.

10. The bar cutting apparatus according to any one of claims 5-7, wherein, The application relates to a battery disassembling device.

11. The bar cutter apparatus of claim 10, wherein, The application relates to a battery disassembling device.

12. A battery disassembly apparatus, comprising: The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. The application relates to a battery disassembling device. 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