Laser processing method and laser processing equipment

Abstract

The invention provides a laser processing method and laser processing equipment, the laser processing equipment comprises a first carrying table and a second carrying table which are arranged on a linear motor, the first carrying table and the second carrying table reciprocate between a feeding position and a discharging position and a stopping position of the first carrying table and the second carrying table respectively, and laser processing is completed when the first carrying table and the second carrying table pass through a processing position of the second carrying table. And when one carrying table moves to the stopping position from the machining position or returns to the feeding and discharging position from the stopping position, the other carrying table moves to the stopping position from the feeding and discharging position. Pendulum type laser processing is adopted, sudden stop or reversing of the carrying table is avoided, a stable motion reference is provided for laser processing, and the processing precision is improved; meanwhile, the movement time periods of the carrying tables are overlapped, low-gap connection of the machining process and the feeding and discharging process in the time dimension is achieved, and the machining efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of laser processing technology, and more specifically, to a laser processing method and laser processing equipment. Background Technology

[0002] In the field of photovoltaic processing technology, lasers are increasingly being used to process solar cells. Examples include laser grooving, laser doping, laser printing, laser annealing, and laser welding. Currently, with the further development of high-efficiency solar cell technology, increasingly higher demands are being placed on laser processing speed and precision.

[0003] One type of machining table in the prior art is a rotary table, which includes a rotary motor that drives multiple circumferentially arranged platforms to rotate simultaneously. Each platform sequentially passes through a loading station, a machining station, and a unloading station, or alternately passes through loading / unloading stations or machining stations. However, for some machining scenarios, this rotary table type machining table is subject to significant impact, and its stability needs further improvement, making it unable to meet more stringent machining accuracy requirements. Summary of the Invention

[0004] The purpose of this application is to address the shortcomings of the prior art by providing a laser processing method and laser processing equipment, which can improve the processing accuracy and efficiency of the processing equipment.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows: In a first aspect, the present invention provides a laser processing method applied to a laser processing equipment, the laser processing equipment comprising at least: a linear motor, a first stage, a second stage, and a laser processing module. A first loading / unloading position, a second stop position, a processing position, a first stop position, and a second loading / unloading position are sequentially arranged on the processing transmission line of the linear motor. The laser processing module is disposed above the processing position. The first stage and the second stage are respectively disposed on two moving parts of the linear motor and driven by the linear motor. The method includes: The first platform reciprocates between the first loading / unloading position and the first stop position. The first platform receives battery cells at the first loading / unloading position and moves to the first stop position. When it reaches the processing position, the laser processing module emits a laser to process the battery cells on the first platform. The first platform continues to move to the first stop position, and then the first platform returns from the first stop position to the first loading / unloading position. The second platform reciprocates between the second loading / unloading position and the second stop position. The second platform receives battery cells at the second loading / unloading position and moves to the second stop position. When it reaches the processing position, the laser processing module emits a laser to process the battery cells on the second platform. The second platform continues to move to the second stop position, and then the second platform returns from the second stop position to the second loading / unloading position. During the period when the first platform moves from the processing position to the first stop position, or during the period when the first platform returns from the first stop position to the first loading / unloading position, the second platform moves from the second loading / unloading position to the second stop position; During the period when the second platform moves from the processing position to the second stop position, or during the period when the second platform returns from the second stop position to the second loading / unloading position, the first platform moves from the first loading / unloading position to the second stop position.

[0006] In an optional implementation, during the return of the first platform from the first stop position to the first loading / unloading position, before reaching the processing position, the second platform moves from the second loading / unloading position to the second stop position; During the return of the second platform from the second stop position to the second loading / unloading position, before reaching the processing position, the first platform moves from the first loading / unloading position to the second stop position.

[0007] In an optional implementation, the first time t is when the first stage moves from the processing position to the first stop position. 11 The time t is less than the second time t it takes for the second platform to move from the second loading / unloading position to the processing position. 12 .

[0008] In an optional implementation, the first time t is when the first stage moves from the processing position to the first stop position. 11 The time t is less than the third time t during which the second platform moves from the second loading / unloading position to the first stop position. 13 .

[0009] In an optional implementation, the first time t is when the first stage moves from the processing position to the first stop position. 11 The fourth time t between the first stage returning from the first stop position to the processing position 14 The sum of t 11 +t 14 The time t is less than the second time t it takes for the second platform to move from the second loading / unloading position to the processing position. 12 ; and / or, The sum of the time it takes for the first platform to move from the processing position to the first stop position and the time it takes for the first platform to move from the first stop position to the second stop position is less than the time it takes for the second platform to move from the second loading / unloading position to the second stop position.

[0010] In an optional implementation, the fifth time t during which the first stage moves from the first stop position to the second stop position is... 15 The time t is less than the sixth time t during which the second platform moves from the second loading / unloading position to the second stop position. 16 ; and / or, The time it takes for the first platform to move from the first stop position to the processing position is less than the time it takes for the second platform to move from the second loading / unloading position to the processing position.

[0011] In an optional embodiment, during the movement of the first platform from the processing position to the first stop position, or during the movement of the first platform from the first stop position back to the first loading / unloading position, the second platform moves from the second loading / unloading position to the second stop position, including: The first stage moves from the processing position to the first stop position for a preset time t. 10 Then, the second platform moves from the second loading / unloading position to the second stop position, and the preset time t 10 Less than the target time, where the target time is the second time t it takes for the second platform to move from the second loading / unloading position to the processing position. 12 The fourth time t between the first stage moving from the first stop position to the processing position. 14 The difference t between 12 -t 14 .

[0012] In an optional embodiment, when the first platform moves from the first loading / unloading position to the first stop position, it moves at a constant speed at the processing position; when the second platform moves from the second loading / unloading position to the second stop position, it moves at a constant speed at the processing position.

[0013] In an optional implementation, the distances from the first loading / unloading position and the second loading / unloading position to the processing position are equal, and the distances from the first stop position and the second stop position to the processing position are equal.

[0014] In an optional implementation, the distance from the first loading / unloading position to the processing position is greater than the distance from the first stop position to the processing position.

[0015] In an optional embodiment, after the battery cell on the first platform enters the processing position by more than 1 / 6 of its width from the first loading / unloading position or the battery cell on the second platform enters the processing position from the second loading / unloading position, the laser processing module emits a laser to process the battery cell and completes the processing before the battery cell leaves the processing position by less than 5 / 6 of its width. That is, along the movement direction of the first or second platform, the area where the laser processing module emits laser to process the battery cell is within the middle 2 / 3 width of the processing position.

[0016] In an optional embodiment, the laser processing module is a galvanometer field lens processing module, and the processing area of ​​the processing position is the processing area of ​​the galvanometer field lens.

[0017] In an optional embodiment, when the laser processing module emits a laser to process the battery cells on the first stage or when the laser processing module emits a laser to process the battery cells on the second stage, it is called in-flight processing.

[0018] In a second aspect, the present invention provides a laser processing device for performing any of the laser processing methods described in the foregoing embodiments. The laser processing device further includes: a first stage and a second stage respectively disposed on two moving parts of a linear motor, wherein the linear motor drives the first stage and the second stage to reciprocate along the length direction of the stator of the linear motor. The first platform and the second platform are single platforms or multiple platforms. When the first platform and the second platform are multiple platforms, the arrangement direction of the multiple platforms in the multiple platforms is perpendicular to the movement direction of the platform. Two laser processing modules are arranged above the processing position to process the battery cells on each platform in the multiple platforms.

[0019] In an optional embodiment, the laser processing equipment further includes: a first feeding conveyor module and a first unloading conveyor module, and a first L-shaped rotating arm suction cup module, wherein the first L-shaped rotating arm suction cup module picks up the battery cell from the first feeding conveyor module to the first unloading position and picks up the battery cell from the first unloading position to the first unloading conveyor module. The second feeding conveyor module and the first unloading conveyor module, and the second L-shaped rotating arm suction cup module, wherein the second L-shaped rotating arm suction cup module picks up the battery cells from the second feeding module to the second unloading position and picks up the battery cells from the second unloading position to the second unloading module.

[0020] In an optional embodiment, the laser processing equipment includes a loading line and a unloading line, which are arranged parallel to each other on both sides of the linear motor. The first L-shaped rotary arm suction cup module and the second L-shaped rotary arm suction cup module are arranged at both ends of the linear motor. The first loading conveyor module and the second loading module are arranged sequentially on the loading line, and the first unloading conveyor module and the second unloading module are arranged sequentially on the unloading line.

[0021] The beneficial effects of this application are that, by using linear motors to drive the first and second platforms, compared to existing rotary indexing mechanisms, it can fundamentally eliminate the overall machine vibration and residual shaking caused by huge changes in angular momentum during high-speed start-up and shutdown, shorten the positioning stabilization time, and provide a more stable base for laser processing, thereby improving processing accuracy and consistency. Furthermore, by setting the first and second loading / unloading positions and the processing position to be located on the processing transmission line, it ensures that the dynamic conditions (such as acceleration and velocity curves) and static support rigidity of each station during the indexing motion are completely identical, thereby achieving uniformity of the processing environment across all stations. The introduction of the first and second stop positions enables pendulum-style laser processing, avoiding abrupt stops or reversals of the first or second stage at the processing position. This allows the linear motor to operate in continuous, smooth, uniform or accelerated / decelerated motion throughout the entire process, significantly reducing high-frequency oscillations caused by start-stop impact. In particular, the uniform motion of the first and second stages at the processing position provides a more stable motion reference for laser processing, improving processing accuracy. Simultaneously, by controlling the overlapping of the movement periods of the first and second stages, a low-gap connection between processing and loading / unloading processes in the time dimension is achieved, which can improve the processing efficiency of the laser processing equipment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a laser processing device provided in an embodiment of this application; Figure 2 This application provides a schematic diagram of another laser processing device. Figure 3 This is a schematic flowchart of a laser processing method provided in an embodiment of the present invention; Figure 4 This application provides a schematic diagram of the motion timing of a laser processing device according to an embodiment of the present application. Figure 5 This is a schematic diagram of the motion timing of another laser processing device provided in an embodiment of this application; Figure 6 This is a schematic diagram of the motion timing of another laser processing device provided in an embodiment of this application; Figure 7 This is a schematic diagram of the motion timing of another laser processing device provided in an embodiment of this application; Figure 8 This is a schematic diagram of the motion timing of another laser processing device provided in an embodiment of this application. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the accompanying drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.

[0025] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that the term "comprising" will be used in the embodiments of this application to indicate the presence of the features declared thereafter, but does not exclude the addition of other features.

[0027] In related technologies, the processing table of laser processing equipment is generally a rotary table type, which includes a rotary motor that drives multiple circumferentially arranged platforms to rotate simultaneously. Each platform sequentially passes through the loading station, processing station, and unloading station, or alternately passes through the loading / unloading station or processing station. For some processing scenarios, this rotary table type processing table is subject to significant impact, and its stability needs further improvement, making it unable to meet more stringent processing precision requirements.

[0028] In view of this, embodiments of this application provide a laser processing method and laser processing equipment. By employing linear motors to drive the first and second stages, compared to existing rotary indexing mechanisms, the overall machine vibration and residual shaking caused by the huge angular momentum changes during high-speed start-up and shutdown can be fundamentally eliminated, shortening the positioning stabilization time and providing a more stable base for laser processing, thereby improving processing accuracy and consistency. Furthermore, by setting the first and second loading / unloading positions and the processing position to be located on the processing transmission line, it is ensured that the dynamic conditions (such as acceleration and velocity curves) and static support rigidity of each station during the indexing motion are completely identical, thereby achieving full-station operation. Uniformity of the processing environment; the introduction of the first and second stop positions enables pendulum-style laser processing, avoiding abrupt stops or reversals of the first or second stage at the processing position. This allows the linear motor to operate in continuous, smooth, uniform or accelerated / decelerated motion throughout the entire process, significantly reducing high-frequency oscillations caused by start-stop impact. In particular, the uniform motion of the first and second stages at the processing position provides a more stable motion reference for laser processing, improving processing accuracy. Simultaneously, by controlling the overlapping of the movement periods of the first and second stages, low-gap connection between processing and loading / unloading processes in the time dimension is achieved, which can improve the processing efficiency of the laser processing equipment.

[0029] Figure 1 This is a schematic diagram of a laser processing device provided in an embodiment of this application. This laser processing device can perform the laser processing method provided in this embodiment of the application, and can be used for processing photovoltaic cells. Wherein, as... Figure 1 As shown, the laser processing equipment includes: a linear motor 100, a first stage 110, a second stage 130, and a laser processing module. In some embodiments, the first stage 110 and the second stage 130 are respectively mounted on two moving parts of the linear motor 100, driving the first stage 110 and the second stage 130 to reciprocate along the length of the stator of the linear motor 100. Battery cells can be placed on the first stage 110 or the second stage 130 at a first loading / unloading position A or a second loading / unloading position C. The linear motor drives the first stage 110 or the second stage 130 to move to processing position B. The laser emitted from the laser processing module processes the battery cells on the first stage 110 or the second stage 130. The linear motor's ability to accelerate and decelerate at high speed significantly shortens the movement time between workstations and improves the production cycle time.

[0030] The first loading / unloading position A, the second loading / unloading position C, and the processing position B are all located on the processing transmission line. The first loading / unloading position A and the second loading / unloading position C are located at opposite ends of the processing transmission line, and the processing position B is located between the first loading / unloading position A and the second loading / unloading position C. A laser processing module is installed above the processing position B, and the laser emitted by the laser processing module can process the battery cells on the first platform 110 or the second platform 130. In other words, the first loading / unloading position A, the processing position B, and the second loading / unloading position C are arranged sequentially along the length of the stator of the linear motor 100.

[0031] The laser processing equipment of the present invention further includes a first transmission line module for conveying battery cells to a first loading / unloading position A and a second transmission line module for conveying battery cells to a second loading / unloading position C.

[0032] Optionally, a robotic arm can be used to obtain battery cells from the first transmission line module or the second transmission line module and place them at the first loading / unloading position A or the second loading / unloading position C. The robotic arm then places the processed battery cells from the first loading / unloading position A or the second loading / unloading position C into the first transmission line module or the second transmission line module.

[0033] Optionally, the robotic arm is an L-shaped rotary arm suction cup module. The L-shaped rotary arm suction cup module is used to obtain the battery cells from the first transmission line module or the second transmission line module to the first loading / unloading position A or the second loading / unloading position C. After the position of the battery cells is corrected at the first loading / unloading position A or the second loading / unloading position C, they are sent to the processing position B through the first platform 110 or the second platform 130. The robotic arm then obtains the battery cells that have been processed at the first loading / unloading position A or the second loading / unloading position C and places them into the first transmission line module or the second transmission line module.

[0034] In this embodiment, the first loading / unloading position A and the second loading / unloading position C each correspond to an L-shaped rotary suction cup module. The working range of the first L-shaped rotary suction cup module 310 corresponding to the first loading / unloading position A covers the first transmission line module and the first loading / unloading position A. The working range of the second L-shaped rotary suction cup module 320 corresponding to the second loading / unloading position C covers the second transmission line module and the second loading / unloading position C. In some embodiments, each L-shaped rotary suction cup module has suction cup assemblies at both ends. In some embodiments, the L-shaped rotary suction cup module can use the suction cup assemblies to pick up battery cells from the first transmission line module or the second transmission line module and transfer them to the first loading / unloading position A or the second loading / unloading position C, and then adsorb and place the processed battery cells from the first loading / unloading position A or the second loading / unloading position C onto the first transmission line module or the second transmission line module.

[0035] In some embodiments, a first visual positioning module and a second visual positioning module can be respectively set above the first loading / unloading position A and the second loading / unloading position C. Taking the first visual positioning module as an example, the field of view of the first visual positioning module is fixedly covered over the battery cell bearing position on the first loading / unloading position A. The first visual positioning module is used to identify the position of the battery cell and then correct it through mechanical positioning; or the position information of the battery cell is transmitted to the laser processing module, and the laser processing module processes the battery cell at the processing position according to the actual position of the battery cell, thereby ensuring the accuracy of laser processing.

[0036] The first loading platform 110 at the first loading / unloading position A can be a single platform or multiple platforms. Taking a double platform as an example, see [link to relevant documentation]. Figure 1 and Figure 2 These represent the single-stage and dual-stage scenarios, respectively. See also... Figure 1 The first platform 110 at the first loading and unloading position A is a single platform. The linear motor 100 drives the single platform to move to the processing position B. The laser emitted by the laser processing module processes the battery cells on the single platform. See Figure 2 The first platform 110 at the first loading and unloading position A is a dual platform. The two platforms in the dual platform are set perpendicular to the movement direction of the platform. The linear motor 100 drives the dual platform to move to the processing position B. At this time, each platform is equipped with a laser processing module. The emitted laser processes the battery cells of each platform. Of course, a laser beam splitting method can also be used. Each platform is equipped with a galvanometer and a field mirror to process the battery cells of each platform. This is also considered as each platform being equipped with a laser processing module.

[0037] In some implementations, a single platform is used as an example. A single platform can carry a whole solar cell or multiple segmented solar cells, for example... Figure 1 and Figure 2 In this system, each single platform has two support areas, each supporting two half-cells of solar cells. These two support areas are positioned along the direction of platform movement.

[0038] It should be noted that the support platform is a negative pressure adsorption support platform, which can adsorb and fix the battery cells on the support platform.

[0039] In some embodiments, it should be noted that the laser processing equipment may further include a loading line 410 and an unloading line 420, wherein the loading line 410 is used to continuously input unprocessed battery cells, and the unloading line 420 is used to output processed batteries. Optionally, the first transmission line module and the second transmission line module may each include a loading conveyor module and an unloading conveyor module. Taking the first transmission line module as an example, the first loading conveyor module 210 of the first transmission line module can be set in the loading line 410. A robotic arm is used to pick up battery cells from the first loading conveyor module 210 and place them at the first loading / unloading position A. After the battery cells are processed, the processed battery cells at the first loading / unloading position A are picked up and placed into the first unloading conveyor module 230. The second transmission module is similarly configured.

[0040] See Figure 1 and Figure 2 The loading and unloading lines 410 and 420 are arranged in parallel on both sides of the linear motor 100, and the first L-shaped rotating arm suction cup module 310 and the second L-shaped rotating arm suction cup module 320 are respectively arranged at both ends of the linear motor. In this way, the above-mentioned loading and unloading are realized.

[0041] In some implementations, the laser galvanometer processing module may include a laser, a galvanometer, a field lens, and other accessories that can optimize the optical path. Laser scanning and laser switching are both achieved through the galvanometer. The laser galvanometer processing module can perform static processing or on-flight (dynamic) processing.

[0042] In summary, the embodiments of this application provide a laser processing equipment. By employing a highly reliable, long-life linear motor to drive the first and second platforms, compared to existing rotary indexing mechanisms, it can fundamentally eliminate the overall machine vibration and residual shaking caused by the huge angular momentum changes during high-speed start-up and shutdown, shorten the positioning stabilization time, provide a more stable base for laser processing, improve processing accuracy and consistency, reduce the maintenance cost of the laser processing equipment throughout its entire life cycle, and ensure the accuracy and stability of long-term operation. In addition, by setting the first loading and unloading positions, the second loading and unloading positions, and the processing position to be located on the processing transmission line, it is ensured that the dynamic conditions (such as acceleration and velocity curves) and static support rigidity of each station during the indexing motion are completely identical, thereby achieving uniformity of the processing environment across all stations.

[0043] Figure 3 This is a schematic flowchart of a laser processing method provided in an embodiment of the present invention, wherein the method can be applied to... Figure 1 and Figure 2 The laser processing equipment shown can process solar cells; in some embodiments, the solar cells are specifically photovoltaic cells. For example... Figure 1As shown, the laser processing equipment includes at least: a first loading / unloading position A, a second stop position S2, a processing position B, a first stop position S1, and a second loading / unloading position C arranged sequentially. A laser processing module is arranged above the processing position B. The first stage 110 and the second stage 130 are driven to reciprocate by a linear motor 100. Specifically, the first stage 110 and the second stage 130 are respectively arranged on the two moving parts of the linear motor 100, and reciprocate along the length of the stator. Optionally, as... Figure 3 As shown, the method includes: S101, the second platform at the second loading / unloading position receives the battery cells, and the linear motor drives the second platform to move to the processing position. During the period when the first platform moves from the processing position to the first stop position, or during the period when the first platform returns from the first stop position to the first loading / unloading position, the linear motor starts to drive the second platform to move from the second loading / unloading position to the processing position.

[0044] S102, The laser emitted from the laser processing module processes the battery cells on the second stage.

[0045] Preferably, the second stage passes through the processing position at a constant speed, during which the laser processing module performs flight processing on the battery cells of the second stage.

[0046] S103. After the battery cells on the second stage are processed, the second stage continues to move to the second stop position.

[0047] S104, the second platform returns from the second stop position to the second loading / unloading position.

[0048] During the period when the first platform returns from the first stop position to the first loading / unloading position, the linear motor starts to drive the second platform to move from the second loading / unloading position to the processing position. Preferably, the linear motor starts to drive the second platform to move from the second loading / unloading position to the processing position before reaching the processing position.

[0049] Referring to the equipment structure of the laser processing equipment described above, the movement of the first stage and the second stage is similar. A linear motor can drive the first stage and the second stage to move back and forth alternately, and the first stage and the second stage alternately occupy the processing position to perform processing.

[0050] Specifically, for the second platform, an L-shaped rotary arm suction cup module is used to pick up battery cells from the loading and conveying module of the second transmission line module and place them on the second platform at the second loading / unloading position. During the movement of the first platform from the processing position to the first stop position, or during the movement of the first platform from the first stop position back to the first loading / unloading position, preferably before reaching the processing position, a linear motor can start driving the second platform to move from the second loading / unloading position to the second stop position. When it reaches the processing position, the laser emitted by the laser processing module set above the processing position can process the battery cells on the second platform. The linear motor can continue to drive the second platform to move to the second stop position. After the second platform moves to the second stop position, the linear motor can drive the second platform to return from the second stop position to the second loading / unloading position. The L-shaped rotary arm suction cup module picks up the processed battery cells from the second loading / unloading position and places them on the unloading and conveying module of the second transmission line module. At the same time, the L-shaped rotary arm suction cup module picks up the battery cells from the loading and conveying module of the second transmission line module and places them on the second platform. This allows for alternating loading and unloading of materials and alternating processing between the first and second loading platforms.

[0051] If, during the movement of the first platform from the processing position to the first stop position, the linear motor drives the second platform to move from the second loading / unloading position to the second stop position, collisions between the first and second platforms can be avoided by controlling the movement speed and start-up time. Similarly, if, during the return movement of the first platform from the first stop position to the first loading / unloading position, before reaching the processing position, the linear motor drives the second platform to move to the second stop position, collisions can be avoided by controlling the movement speed and start-up time. In other words, when the second platform moves from the second loading / unloading position to the second stop position, it is always behind the first platform in the direction of movement; and when the first platform moves from the first loading / unloading position to the first stop position, it is always behind the second platform in the direction of movement.

[0052] It is understood that by applying the embodiments of this application, pendulum-style laser processing can be achieved through the introduction of the first and second stop positions, avoiding abrupt stops or reversals of the first or second platform at the processing position. This allows the linear motor to operate in continuous, smooth uniform or acceleration / deceleration motion throughout the entire process, significantly reducing high-frequency oscillations caused by start-stop impact forces. In particular, the first and second platforms are in uniform motion at the processing position, providing a more stable motion reference for laser processing and improving processing accuracy. At the same time, by controlling the overlapping of the movement periods of the first and second platforms, a low-gap connection between processing and loading / unloading processes in the time dimension is achieved, which can improve the processing efficiency of the laser processing equipment.

[0053] It should be noted that the above-mentioned methods for processing the solar cells on the second platform may include laser grooving, laser doping, laser modification, laser printing, laser sintering, etc.

[0054] In summary, this application provides a laser processing method applied to a laser processing equipment. The laser processing equipment includes at least a linear motor, a first stage, a second stage, and a laser processing module. A first loading / unloading position, a second stop position, a processing position, a first stop position, and a second loading / unloading position are sequentially arranged on the processing transmission line of the linear motor (i.e., along the stator length direction of the linear motor). The laser processing module is positioned above the processing position. The first stage and the second stage are respectively mounted on two moving parts of the linear motor and are driven by the linear motor. The method includes: the first stage reciprocating between the first loading / unloading position and the first stop position; the first stage receiving battery cells at the first loading / unloading position and moving towards the first stop position; upon reaching the processing position, the laser processing module emitting a laser to process the battery cells on the first stage; and the first stage continuing to move to the first stop position. Then, the first platform returns from the first stop position to the first loading / unloading position; the second platform reciprocates between the second loading / unloading position and the second stop position. The first platform receives the battery cells at the second loading / unloading position and moves to the second stop position. When it reaches the processing position, the laser processing module emits a laser to process the battery cells on the second platform. The second platform continues to move to the second stop position, and then returns from the second stop position to the second loading / unloading position. During the period when the first platform moves from the processing position to the first stop position, or during the period when the first platform returns from the first stop position to the first loading / unloading position, before reaching the processing position, the second platform moves from the second loading / unloading position to the second stop position. During the period when the second platform moves from the processing position to the second stop position, or during the period when the second platform returns from the second stop position to the second loading / unloading position, before reaching the processing position, the first platform moves from the first loading / unloading position to the second stop position. By employing linear motors to drive the first and second platforms, compared to existing rotary indexing mechanisms, the vibration and residual shaking caused by large changes in angular momentum during high-speed start-up and shutdown can be fundamentally eliminated, shortening the positioning stabilization time and providing a more stable base for laser processing, thereby improving processing accuracy and consistency. Furthermore, by setting the first and second loading / unloading positions and the processing position to be located on the processing transmission line, the dynamic conditions (such as acceleration and velocity curves) and static support rigidity of each station during the indexing motion are ensured to be completely identical, thus achieving uniformity of the processing environment across all stations; through the first... The introduction of a first and second stop position enables pendulum-style laser processing, avoiding abrupt stops or reversals of the first or second stage at the processing position. This allows the linear motor to operate in continuous, smooth, uniform or accelerated / decelerated motion throughout the entire process, significantly reducing high-frequency oscillations caused by start-stop impact. In particular, the uniform motion of the first and second stages at the processing position provides a more stable motion reference for laser processing, improving processing accuracy. Simultaneously, by controlling the overlapping of the movement periods of the first and second stages, a low-gap connection between processing and loading / unloading processes in the time dimension is achieved, which can improve the processing efficiency of the laser processing equipment.

[0055] Optionally, for the first platform, an L-shaped rotary arm suction cup module can be used to pick up battery cells from the loading and conveying module of the first transmission line module and place them on the first platform at the first loading / unloading position. During the movement of the second platform from the processing position to the second stop position, or during the movement of the second platform from the second stop position back to the second loading / unloading position, before reaching the processing position, a linear motor can start driving the first platform to move from the first loading / unloading position to the first stop position. When it moves to the processing position, the laser emitted by the laser processing module set above the processing position can process the battery cells on the first platform. The linear motor can drive the first platform to continue moving to the first stop position. After the first platform moves to the first stop position, the linear motor can drive the first platform to return from the first stop position to the first loading / unloading position. The L-shaped rotary arm suction cup module picks up the battery cells that have been processed at the first loading / unloading position and places them on the unloading and conveying module of the first transmission line module. At the same time, the L-shaped rotary arm suction cup module picks up the battery cells picked up by the loading and conveying module of the first transmission line module and places them on the first platform.

[0056] Understandably, if the linear motor drives the first platform from the first loading / unloading position to the processing position while the second platform is moving from the processing position to the second stop position, collisions between the first and second platforms can be avoided by controlling the movement speed and start-up time. Similarly, if the linear motor drives the first platform from the first loading / unloading position to the processing position while the second platform is returning from the second stop position to the second loading / unloading position, before reaching the processing position, collisions between the first and second platforms can be avoided by controlling the movement speed and start-up time. This allows for the introduction of the first and second stop positions to achieve [the desired effect]. To achieve pendulum-style laser processing, abrupt stops or reversals of the first or second stage at the processing position are avoided. This allows the linear motor to operate in continuous, smooth, uniform or accelerated / decelerated motion throughout the entire process, significantly reducing high-frequency oscillations caused by start-stop impact. In particular, the uniform motion of the first and second stages at the processing position provides a more stable motion reference for laser processing, improving processing accuracy. At the same time, by controlling the overlapping of the movement periods of the first and second stages, low-gap connection between processing and loading / unloading processes in the time dimension is achieved, which can improve the processing efficiency of the laser processing equipment.

[0057] Based on the above description, the movement mode of the first platform is similar to that of the second platform.

[0058] Optionally, the above method may include: The first platform at the first loading and unloading position receives the battery cells. The linear motor drives the first platform to move to the processing position. The laser emitted by the laser processing module processes the battery cells on the first platform. After the battery cells on the first platform are processed, the first platform continues to move to the first stop position. During the period when the second platform moves to the second stop position after the battery cells have been processed, or during the period when the second platform returns from the second stop position to the second loading / unloading position, before reaching the processing position, the linear motor drives the first platform to move from the first loading / unloading position to the processing position.

[0059] During the period after the first platform finishes processing the battery cells and moves to the first stop position, or during the period when the first platform returns from the first stop position to the first loading / unloading position, before reaching the processing position, the linear motor drives the second platform to move from the second loading / unloading position to the processing position.

[0060] The relevant motion processes of the first and second platforms can be referred to each other, and will not be repeated here.

[0061] Figure 4 This is a schematic diagram of the motion timing of a laser processing device provided in an embodiment of this application. In optional embodiments, such as... Figure 4 As shown, the horizontal direction to the right is the feeding direction of the feeding line, and the horizontal direction to the left is the unloading direction of the unloading line. The feeding and unloading directions are opposite. Of course, it should be noted that the feeding and unloading directions are not limited to the diagram. The initial position of the first platform P1 is the first loading / unloading position A, and the initial position of the second platform P2 is the second loading / unloading position C. P1 is horizontal. The linear motor drives the first platform P1 and the second platform P2 to reciprocate along the stator length of the linear motor. The first stop position S1 is located between the processing position B and the second loading / unloading position C, and the second stop position S2 is located between the processing position B and the first loading / unloading position A.

[0062] Optionally, the first time t when the first stage P1 moves from processing position B to the first stop position S1 11 The second time t is less than the second time t it takes for the second platform P2 to move from the second loading / unloading position C to the processing position B. 12 .

[0063] During the period when the battery cells on the first platform have been processed and moved to the first stop position, and the linear motor drives the second platform to move from the second loading / unloading position to the processing position, the movement time corresponding to the linear motor driving the first platform P1 to move from the processing position B to the first stop position S1 is denoted as the first time t. 11 The second time t corresponds to the linear motor driving the second platform P2 to move from the second loading / unloading position C to the processing position B. 12 The relationship between the two is: t 11 <t 12 This embodiment is applicable where, after the first platform completes processing, the linear motor immediately drives the second platform to move from the second loading / unloading position.

[0064] By applying the embodiments of this application, not only can abrupt stops or reversals of the first stage at the processing position be avoided, allowing the linear motor to operate in continuous, smooth uniform or acceleration / deceleration motion throughout the entire process, significantly reducing high-frequency oscillations caused by start-stop impact forces, but also, in particular, the first and second stages are in uniform motion at the processing position, providing a more stable motion reference for laser processing and improving processing accuracy. Furthermore, by limiting the relationship between the first and second times, a time margin can be provided for the first stage to return from the first stop position to the processing position, avoiding collisions between the first and second stages and improving the reliability of the laser processing equipment.

[0065] Figure 5 This is a schematic diagram of the motion timing of another laser processing device provided in an embodiment of this application. In optional embodiments, such as... Figure 5 As shown, the first time t when the first stage P1 moves from the processing position B to the first stop position S1 is... 11 The third time t is less than the time it takes for the second platform P2 to move from the second loading / unloading position C to the first stop position S1. 13 .

[0066] During the period when the battery cell on the first platform P1 moves from processing position B to the first stop position S1 after processing, while the linear motor drives the second platform P2 to move from the second loading / unloading position C to processing position B, the movement time corresponding to the linear motor driving the first platform P1 to move from processing position B to the first stop position S1 is denoted as the first time t. 11 The linear motor drives the second platform P2 to move from the second loading / unloading position C to the first stop position S1. The corresponding third time is t. 13 Then the relationship between the two is: t 11 <t 13 This embodiment is applicable where, after the first platform completes processing, the linear motor immediately drives the second platform to move from the second loading / unloading position.

[0067] By applying the embodiments of this application, a time margin can be provided for the first stage to return from the first stop position to the processing position, avoiding collisions between the first stage and the second stage, and improving the reliability of the laser processing equipment.

[0068] Figure 6 This is a schematic diagram of the motion timing of a laser processing device provided in an embodiment of this application. In optional embodiments, such as... Figure 6 As shown, the first time t when the first stage P1 moves from the processing position B to the first stop position S1 is... 11 The fourth time t when the first stage P1 returns from the first stop position S1 to the processing position B 14 The sum of t 11 +t 14 The second time t is less than the time it takes for the second platform P2 to move from the second loading / unloading position C to the processing position B.12 .

[0069] During the period when the battery cell on the first platform P1 has been processed and moved to the first stop position S1, while the linear motor drives the second platform P2 to move from the second loading / unloading position C to the processing position B, the movement time of the first platform P1 from the processing position B to the first stop position S1 is recorded as the first time t. 11 The time taken for the first stage P1 to return from the first stop position S1 to the processing position B is the fourth time t. 14 The time taken for the second platform P2 to move from the second loading / unloading position C to the processing position B is the second time t. 12 , then t 11 +t 14 <t 12 .

[0070] Furthermore, the sum of the first time the first platform moves from the processing position to the first stop position and the time the first platform moves from the first stop position to the second stop position is less than the time the second platform moves from the second loading / unloading position to the second stop position.

[0071] This embodiment can be applied to a situation where, after the first platform has completed processing, the linear motor starts driving the second platform to move from the second loading / unloading position.

[0072] By applying the embodiments of this application, by limiting the relationship between the sum of the first time and the fourth time and the second time, a time margin can be provided for the subsequent return of the first stage from the processing position to the second stop position, thereby avoiding collisions between the first stage and the second stage and improving the reliability of the laser processing equipment.

[0073] Figure 7 This is a schematic diagram of the motion timing of a laser processing device provided in an embodiment of this application. In optional embodiments, such as... Figure 7 As shown, the fifth time t during which the first platform P1 moves from the first stop position S1 to the second stop position S2 is... 15 The time t is less than the sixth time t during which the second platform P2 moves from the second loading / unloading position C to the second stop position S2. 16 .

[0074] During the period when the first platform P1 returns from the first stop position S1 to the first loading / unloading position A, and the linear motor drives the second platform P2 to move from the second loading / unloading position C to the processing position, the movement time of the first platform P1 from the first stop position S1 to the second stop position S2 is denoted as the fifth time t. 15 The time taken for the second platform to move from the second loading / unloading position to the second stop position is the sixth time t. 16 Then both should satisfy: t 15 <t 16 .

[0075] Furthermore, the time it takes for the first platform to move from the first stop position to the processing position is less than the time it takes for the second platform to move from the second loading / unloading position to the processing position.

[0076] This embodiment can be applied when the first platform returns from the first stop position, and the linear motor starts to drive the second platform to move from the second loading / unloading position.

[0077] By applying the embodiments of this application and limiting the relationship between the fifth and sixth times, collisions between the first and second stages can be avoided, thereby improving the reliability of the laser processing equipment.

[0078] Figure 8 This is a schematic diagram of the motion timing of a laser processing device provided in an embodiment of this application. In optional embodiments, such as... Figure 8 As shown, during the process of the first loading / unloading position A after the first loading / unloading position P1 completes processing, the linear motor drives the second loading / unloading position P2 to move from the second loading / unloading position C to the processing position B, including: The first platform P1 moves from processing position B to the first stop position S1 for a preset time t. 10 Then, the linear motor drives the second platform P2 to move from the second loading / unloading position C to the processing position B, for a preset time t. 10 Less than the target time, where the target time is the second time t it takes for the second platform P2 to move from the second loading / unloading position C to the processing position B. 12 The fourth time t when the first stage P1 moves from the first stop position S1 to the processing position B. 14 The difference t between 12 -t 14 .

[0079] In some embodiments, when the first platform returns to the first loading / unloading position after completing processing, and the linear motor drives the second platform to move from the second loading / unloading position to the processing position, the first platform can move from the processing position to the first stop position first, followed by the second platform. The first platform can be controlled to move first for a preset time t. 10 Then, the second platform is controlled to move from the second loading / unloading position to the processing position, wherein the preset time t 10 Less than the target time.

[0080] In some implementations, the time taken for the second platform to move from the second loading / unloading position to the processing position is denoted as the second time t. 12 The time taken for the first stage to move from the first stop position to the processing position is the fourth time t. 14 Then the target time is equal to the second time t. 12 and the fourth time t 14 The time difference between them.

[0081] By applying the embodiments of this application, if the first platform moves from the processing position to the first stop position first, and the second platform moves later, by limiting the relationship between the preset time and the target time, collisions can be avoided during the process of the first platform returning to the first loading / unloading position and the process of the second platform moving from the second loading / unloading position to the processing position and from the second loading / unloading position to the second stop position, thereby improving the reliability of the laser processing equipment.

[0082] Of course, it should be noted that this application does not limit the speed and acceleration of the first and second platforms in each embodiment. As long as the time constraints in the above embodiments are met, it is sufficient to ensure that the first and second platforms do not collide. In addition, the above embodiments also have the following technical effects: avoiding sudden stops or reversals of the first platform at the processing position, allowing the linear motor to run in continuous, smooth, uniform acceleration and deceleration motion throughout the entire process, significantly reducing the high-frequency oscillations generated by the start-stop impact force. In particular, the first and second platforms are in a uniform motion state at the processing position, providing a more stable motion reference for laser processing and improving processing accuracy.

[0083] In a laser processing device of the present invention, the distance from the first loading / unloading position to the processing position is generally equal to the distance from the second loading / unloading position to the processing position, and the distance from the first stop position to the processing position is equal to the distance from the second stop position to the processing position. The reciprocating motion of the first stage and the second stage is the same but in opposite directions.

[0084] In some preferred embodiments, the distance from the first loading / unloading position to the processing position is greater than the distance from the first stop position to the processing position, and the distance from the second loading / unloading position to the processing position is greater than the distance from the second stop position to the processing position. On the one hand, providing sufficient distance or time for the platform to accelerate to a uniform speed at the loading / unloading position and pass through the processing position at a uniform speed ensures that both the first and second platforms are in a uniform motion state at the processing position, providing a more stable motion reference for laser processing and improving processing accuracy. Simultaneously, after processing is completed, deceleration occurs within a shorter distance, and the platform returns to the loading / unloading position at the stop position, reducing the equipment's footprint and improving the processing efficiency of the laser processing equipment.

[0085] Laser-assisted machining can be performed as follows. Taking a parallel line as an example, the machining process is as follows: A first or second stage moves at a constant speed at the machining position, with its direction of movement being the first direction. The speed of the stage movement is denoted as V. t The laser scans along the second direction at a speed of V. s Its velocity component along the length of the parallel line is the actual machining speed, and its velocity component in the first direction and V t Equal to compensate for the platform's moving speed.

[0086] Laser scanning speed Vs Platform moving speed V t The angle θ between the second direction and the first direction has the following relationship: Cosθ = V t / V s .

[0087] When the processed pattern consists of multiple parallel lines, after scanning one pattern (one line), the laser jumps forward or backward along the movement direction to reach another line and then scans again; alternatively, the laser beam can be turned off and wait for the next processed line to reach the laser beam's position before resuming beam scanning. When scanning any line, scanning can begin from either end.

[0088] The graphic to be processed can also be a sheet-like area. In fact, this processing area can be decomposed into multiple parallel lines, with adjacent parallel lines connected together. During actual processing, the size of the laser spot can be controlled to control the width of the processing lines, and the position of the laser jump can be adjusted to ensure that adjacent processing lines connect.

[0089] When the laser switches from one processing line to the next, it can switch to an adjacent processing line or a non-adjacent processing line, as long as the processing can be completed at the processing station.

[0090] This invention is not limited to this. For the processing of other graphics, other flying processing methods can be used. The stage can also accelerate or decelerate as it passes through the processing position. It is only necessary to ensure that the scanning rate of the laser beam in the direction of motion is equal to the speed of the stage in the direction of motion to fully compensate for the positional deviation caused by the movement of the stage.

[0091] In an optional implementation, after the battery cell on the first platform enters the processing position by more than 1 / 6 of its width from the first loading / unloading position or the battery cell on the second platform enters the processing position from the second loading / unloading position, the laser processing module emits a laser to process the battery cell and completes the processing before the battery cell leaves the processing position by less than 5 / 6 of its width; that is, in the direction of movement of the first platform or the second platform, the area where the laser processing module emits a laser to process the battery cell is within the middle 2 / 3 width of the processing position.

[0092] Optionally, taking the first platform as an example, the processing timing of the laser processing module can be limited according to the relationship between the battery cells on the first platform and the processing position. That is, when the battery cells on the first platform enter the processing position from the first loading / unloading position, the laser processing module does not emit laser light to process the battery cells. After the battery cells on the first platform have entered more than 1 / 6 of the width of the processing position, the laser processing module emits laser light to perform fly-through processing on the battery cells, and the laser processing module completes the processing of the battery cells before the battery cells leave less than 5 / 6 of the width of the processing position. Here, the laser processing module is a galvanometer field lens processing module, and the processing area of ​​the processing position is the processing area of ​​the galvanometer field lens. In this way, the laser processing module only processes within 2 / 3 of the width of the galvanometer field lens processing area, avoiding the problem of insufficient processing accuracy caused by laser distortion when processing the edges. At the same time, the narrow processing area is also more conducive to the clean removal of dust, solving the problem that traditional dust removal is not easy to remove from the edges, resulting in the dust being raised or adhering to the surface of the battery cell to be processed, which leads to a decrease in processing quality.

[0093] Of course, it should be noted that this application does not limit the scanning path, jump path, etc. of the laser processing head in the laser processing module, and can be flexibly set according to the actual application scenario.

[0094] In summary, this application provides a laser processing method that, through the introduction of a first and second stop position, enables pendulum-style laser processing, avoiding abrupt stops or reversals of the first or second stage at the processing position. This allows the linear motor to operate continuously and smoothly in uniform speed and acceleration / deceleration motion throughout the process, significantly reducing high-frequency oscillations caused by start-stop impact. In particular, the first and second stages are in uniform speed motion at the processing position, providing a more stable motion reference for laser processing and improving processing accuracy. By controlling the overlapping of the movement periods of the first and second stages, a low-gap connection between processing and loading / unloading processes in the time dimension is achieved, improving the processing efficiency of the laser processing equipment. By setting the area for processing the battery cells to the middle two-thirds of the processing position, not only is the problem of insufficient processing accuracy caused by laser distortion at the edges avoided, but the narrow processing area also facilitates thorough dust removal, solving the problem of poor dust adhesion at the edges during traditional dust extraction methods, which leads to decreased processing quality.

[0095] The laser processing method and laser processing equipment provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. However, the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A laser processing method, applied to laser processing equipment, characterized in that, The laser processing equipment includes at least: a linear motor, a first stage, a second stage, and a laser processing module. The processing transmission line of the linear motor is sequentially provided with a first loading / unloading position, a second stop position, a processing position, a first stop position, and a second loading / unloading position. The laser processing module is positioned above the processing position. The first stage and the second stage are respectively mounted on two moving parts of the linear motor and are driven by the linear motor. The method includes: The first platform reciprocates between the first loading / unloading position and the first stop position. The first platform receives battery cells at the first loading / unloading position and moves to the first stop position. When it reaches the processing position, the laser processing module emits a laser to process the battery cells on the first platform. The first platform continues to move to the first stop position, and then the first platform returns from the first stop position to the first loading / unloading position. The second platform reciprocates between the second loading / unloading position and the second stop position. The second platform receives battery cells at the second loading / unloading position and moves to the second stop position. When it reaches the processing position, the laser processing module emits a laser to process the battery cells on the second platform. The second platform continues to move to the second stop position, and then the second platform returns from the second stop position to the second loading / unloading position. During the period when the first platform moves from the processing position to the first stop position, or during the period when the first platform returns from the first stop position to the first loading / unloading position, the second platform moves from the second loading / unloading position to the second stop position; During the period when the second platform moves from the processing position to the second stop position, or during the period when the second platform returns from the second stop position to the second loading / unloading position, the first platform moves from the first loading / unloading position to the second stop position.

2. The laser processing method according to claim 1, characterized in that, During the period when the first platform returns from the first stop position to the first loading / unloading position, before reaching the processing position, the second platform moves from the second loading / unloading position to the second stop position; During the return of the second platform from the second stop position to the second loading / unloading position, before reaching the processing position, the first platform moves from the first loading / unloading position to the second stop position.

3. The laser processing method according to claim 1, characterized in that, The first time t when the first stage moves from the processing position to the first stop position 11 The time t is less than the second time t it takes for the second platform to move from the second loading / unloading position to the processing position. 12 .

4. The laser processing method according to claim 1, characterized in that, The first time t when the first stage moves from the processing position to the first stop position 11 The time t is less than the third time t during which the second platform moves from the second loading / unloading position to the first stop position. 13 .

5. The laser processing method according to claim 1, characterized in that, The first time t when the first stage moves from the processing position to the first stop position 11 The fourth time t between the first stage returning from the first stop position to the processing position 14 The sum of t 11 +t 14 The time t is less than the second time t it takes for the second platform to move from the second loading / unloading position to the processing position. 12 ; and / or, The sum of the time it takes for the first platform to move from the processing position to the first stop position and the time it takes for the first platform to move from the first stop position to the second stop position is less than the time it takes for the second platform to move from the second loading / unloading position to the second stop position.

6. The laser processing method according to claim 1, characterized in that, The fifth time t during which the first stage moves from the first stop position to the second stop position 15 The time t is less than the sixth time t during which the second platform moves from the second loading / unloading position to the second stop position. 16 ; and / or, The time it takes for the first platform to move from the first stop position to the processing position is less than the time it takes for the second platform to move from the second loading / unloading position to the processing position.

7. The laser processing method according to claim 1, characterized in that, During the period when the first platform moves from the processing position to the first stop position, or during the period when the first platform returns from the first stop position to the first loading / unloading position, the second platform moves from the second loading / unloading position to the second stop position, including: The first stage moves from the processing position to the first stop position for a preset time t. 10 Then, the second platform moves from the second loading / unloading position to the second stop position, and the preset time t 10 Less than the target time, where the target time is the second time t it takes for the second platform to move from the second loading / unloading position to the processing position. 12 The fourth time t between the first stage moving from the first stop position to the processing position. 14 The difference t between 12 -t 14 .

8. The laser processing method according to claim 1, characterized in that: When the first platform moves from the first loading / unloading position to the first stop position, it moves at a constant speed at the processing position; when the second platform moves from the second loading / unloading position to the second stop position, it moves at a constant speed at the processing position.

9. The laser processing method according to claim 1, characterized in that: The distances from the first loading / unloading position and the second loading / unloading position to the processing position are equal, and the distances from the first stop position and the second stop position to the processing position are equal.

10. The laser processing method according to claim 9, characterized in that: The distance from the first loading / unloading position to the processing position is greater than the distance from the first stop position to the processing position.

11. The laser processing method according to claim 1, characterized in that: After the battery cell on the first loading / unloading position or the battery cell on the second loading / unloading position enters the processing position by more than 1 / 6 of its width, the laser processing module emits a laser to process the battery cell and completes the processing before the battery cell leaves the processing position by less than 5 / 6 of its width. That is, along the movement direction of the first or second platform, the area where the laser processing module emits laser to process the battery cell is within the middle 2 / 3 width of the processing position.

12. The laser processing method according to claim 11, characterized in that: The laser processing module is a galvanometer field lens processing module, and the processing area of ​​the processing position is the processing area of ​​the galvanometer field lens.

13. The laser processing method according to claim 1, characterized in that: When the laser processing module emits a laser to process the battery cells on the first platform or when the laser processing module emits a laser to process the battery cells on the second platform, it is called in-flight processing.

14. A laser processing device, characterized in that, The laser processing equipment is used to perform the laser processing method according to any one of claims 1 to 13. The laser processing equipment further includes: the first stage and the second stage are respectively disposed on the two moving parts of the linear motor, and the linear motor drives the first stage and the second stage to reciprocate along the stator length direction of the linear motor. The first platform and the second platform can be a single platform or multiple platforms; When the first platform and the second platform are multiple platforms, the arrangement direction of the multiple platforms in the multiple platforms is perpendicular to the movement direction of the platform. Multiple laser processing modules are arranged above the processing position to process the battery cells on each platform in the multiple platforms.

15. The laser processing equipment according to claim 14, characterized in that: The laser processing equipment further includes: a first feeding conveyor module and a first unloading conveyor module, and a first L-shaped rotating arm suction cup module. The first L-shaped rotating arm suction cup module picks up the battery cell from the first feeding conveyor module to the first unloading position and picks up the battery cell from the first unloading position to the first unloading conveyor module. The second feeding conveyor module and the first unloading conveyor module, and the second L-shaped rotating arm suction cup module, wherein the second L-shaped rotating arm suction cup module picks up the battery cells from the second feeding module to the second unloading position and picks up the battery cells from the second unloading position to the second unloading module.

16. The laser processing equipment according to claim 15, characterized in that, The laser processing equipment includes a loading line and a unloading line, which are arranged parallel to each other on both sides of the linear motor. The first L-shaped rotary arm suction cup module and the second L-shaped rotary arm suction cup module are arranged at both ends of the linear motor. The first loading conveyor module and the second loading module are arranged sequentially on the loading line, and the first unloading conveyor module and the second unloading module are arranged sequentially on the unloading line.

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