A laser processing device for battery piece

Abstract

The application provides a battery piece laser processing device, which comprises a bearing device and a laser processing device. The bearing device comprises a rotary drive module, at least two rotary actuators connected to the rotary drive module, and a bearing table connected to each rotary actuator. An unloading station and a processing station are arranged on the rotary path of the rotary drive module. The rotary drive module drives the rotary actuator and the bearing table connected thereto to reciprocatingly rotate between the unloading station and the processing station. The laser processing device comprises two laser processing units, which are arranged on the side of the processing station. The two laser processing units emit laser beams from the side of the bearing table to process the two sides of the battery piece. The device can realize mass production of laser processing of the side of the battery piece, remove the side plating, and solve the problem of the decline of the electrical performance of the battery piece caused by the plating.

Description

Technical Field

[0001] This application belongs to the field of photovoltaic technology, specifically relating to a laser processing device for solar cells. Background Technology

[0002] Currently, conventional laser processing technology for solar cells typically only processes the front and back sides of the cells; mass production solutions for processing the sides are rare. One known method involves stacking the cells, then tilting them so the sides face up. The laser processes multiple stacked cells in one pass. After processing one side, the cells are rotated before processing the next side, and so on, until all sides are processed. Because this method requires stacking the cells, it easily causes frictional damage between them, especially for back-contact solar cells. Furthermore, processing the sides after stacking requires clamping the two surfaces of the cells. Since the cells are brittle, they are easily crushed, and there are currently no suitable clamps available. Utility Model Content

[0003] Based on the problems existing in the prior art, this application proposes a laser processing device for battery cells, including a support device and a laser processing device.

[0004] The support device includes a rotary drive module, at least two rotary actuators connected to the rotary drive module, and support platforms connected to the rotary actuators one by one.

[0005] The rotary drive module has loading / unloading stations and processing stations on its rotation path. The rotary drive module drives the rotary actuator and its connected support platform to reciprocate between the loading / unloading stations and the processing stations. When at least one support platform is located at the loading / unloading station, at least another support platform is located at the processing station.

[0006] The laser processing device includes two laser processing units, both of which are located on the side of the processing station. The processing station is the location of the battery cell when processing the side of the battery cell. When the rotary drive module drives any one of the carriers to move to the processing station, both laser processing units are located on the side of the carrier that has moved to the processing station. The two laser processing units emit laser beams from the side of the carrier to process the two sides of the battery cell.

[0007] As a further example, the bearing device also includes a horizontally arranged and centrally symmetrical linear support, and the drive shaft of the rotary drive module is vertically arranged and connected to the center of the linear support;

[0008] The number of rotary actuators is two, and the two rotary actuators are respectively connected to the two ends of the linear support, and the distances from the two support platforms to the center of the linear support are equal.

[0009] As a further example, the two laser processing units are located above or below the side of the processing station. When the rotary drive module drives any one of the carriers to move to the processing station, both laser processing units are located above or below the side of the carrier that has moved to the processing station.

[0010] As a further example, the two laser processing units are located on opposite sides of the processing station. When the rotary drive module drives any one of the carriers to move to the processing station, the two laser processing units are located on opposite sides of the carrier that has moved to the processing station. After the two laser processing units have processed the opposite sides of the battery cell, the rotary actuator drives the carrier to rotate 90°, and the two laser processing units have processed the remaining opposite sides of the battery cell.

[0011] Alternatively, the two laser processing units are located on two adjacent sides of the processing station. When the rotary drive module drives any one of the carriers to move to the processing station, the two laser processing units are located on two adjacent sides of the carrier that has moved to the processing station. After the two laser processing units have processed the two adjacent sides of the battery cell, the rotary actuator drives the carrier to rotate 180°, and the two laser processing units have processed the remaining two adjacent sides of the battery cell.

[0012] As a further example, the laser processing unit includes a laser that emits a laser beam and a laser scanning mechanism that controls the scanning direction of the laser beam. The laser scanning mechanism includes a galvanometer and a field lens, the field lens being fixedly disposed, and the center of the field lens being located on the side of the processing station.

[0013] As a further example, the laser processing equipment also includes a parallel and separate loading conveyor line and a unloading conveyor line, which transport battery cells in opposite directions along a first direction, and the carrying device is located between the loading conveyor line and the unloading conveyor line;

[0014] The laser processing equipment also includes a loading and unloading conveying module, which is used to pick up the battery cells to be processed on the loading conveyor line and pick up the processed battery cells that have been moved to the carrier platform of the loading and unloading station, or to place the battery cells to be processed on the carrier platform that has been moved to the loading and unloading station and place the processed battery cells on the unloading conveyor line.

[0015] As a further example, the loading and unloading handling module is an L-shaped rotary robotic arm. The L-shaped rotary robotic arm includes a rotary drive actuator and two mutually perpendicular robotic arms connected to the rotary drive actuator. The ends of the two robotic arms are respectively connected to suction cups that adsorb battery cells downwards. The L-shaped rotary robotic arm can rotate 90° at a time.

[0016] Alternatively, the loading and unloading transport module is a linear robotic arm, which includes a linear drive actuator and two spaced-apart suction cups for adsorbing battery cells connected to the linear drive actuator. The linear drive actuator drives the two suction cups to move along a second direction, which is perpendicular to the first direction.

[0017] As a further example, the laser processing equipment also includes a positioning device for adjusting the position of the battery cells;

[0018] The positioning device is located at the loading and unloading station. After the carrier moves to the loading and unloading station and receives the battery cell, the positioning device clamps and positions the battery cell from the four sides toward the center.

[0019] Alternatively, the laser processing equipment may also include a loading and conveying line, which includes a positioning belt line corresponding to the loading and unloading stations. The positioning device is located at the position of the positioning belt line. After the positioning belt line receives the battery cell, the positioning device clamps and positions the battery cell from four sides toward the center.

[0020] According to another aspect of this application, a laser processing device for battery cells is also proposed, including a support device and a laser processing device. The support device includes a rotary drive module, a horizontally arranged and centrally symmetrical I-shaped support, four rotary actuators connected to the four ends of the I-shaped support, and a support platform connected to each of the rotary actuators. The distance from the support platform to the center of the I-shaped support is equal. The drive shaft of the rotary drive module is vertically arranged and connected to the center of the I-shaped support.

[0021] The rotary drive module has two loading / unloading stations and two processing stations on its rotation path. The rotary drive module drives the rotary actuator and its connected support platform to reciprocate between the loading / unloading stations and the processing stations. The rotary drive module is used to drive two of the support platforms to be located at the two loading / unloading stations, while the other two support platforms are located at the two processing stations.

[0022] The laser processing device includes four laser processing units. Two laser processing units are arranged on the side of each processing station. The processing station is the location of the battery cell when processing the side of the battery cell. When the rotary drive module drives any one of the carriers to move to the processing station, two of the laser processing units are located on the side of the carrier that has moved to the processing station. The two laser processing units emit laser beams from their corresponding carrier side to process the two sides of the battery cell.

[0023] As a further example, the two laser processing units on each processing station side are located on the two adjacent sides of their corresponding processing station. When the rotary drive module drives the two carriers to move to the processing station respectively, the two laser processing units form a group and are located on the two adjacent sides of the carriers that have moved to their corresponding processing station. After the two laser processing units corresponding to each processing station have processed the two adjacent sides of the battery cell, the rotary actuator drives the carrier to rotate 180°, and the two laser processing units have processed the remaining two adjacent sides of the battery cell.

[0024] According to another aspect of this application, a laser processing device for battery cells is also proposed, including a support device and a laser processing device. The support device includes a rotary drive module, a horizontally arranged and centrally symmetrical support frame, four rotary actuators connected to the support frame, and a support platform connected to each rotary actuator. The distance from the support platform to the center of the support frame is equal. The drive shaft of the rotary drive module is vertically arranged and connected to the center of the support frame.

[0025] The rotary drive module has a loading station, a processing station and a unloading station arranged sequentially on its rotation path. The rotary drive module drives the rotary actuator and its connected support platform to rotate sequentially through the loading station, the processing station and the unloading station.

[0026] The laser processing device includes two laser processing units, both of which are located on the side of the processing station. The processing station is the location of the battery cell when processing the side of the battery cell. When the rotary drive module drives any one of the carriers to move to the processing station, both laser processing units are located on the side of the carrier that has moved to the processing station. The two laser processing units emit laser beams from the side of the carrier to process the two sides of the battery cell.

[0027] As a further example, the support frame is cross-shaped, and the laser processing equipment also includes parallel and separate loading and unloading conveyor lines, with the bearing device located between the loading and unloading conveyor lines;

[0028] The laser processing equipment also includes a loading and unloading transport module and an unloading transport module. Both include a transport drive actuator and a suction cup connected to the transport drive actuator. The loading and unloading transport module drives its corresponding suction cup to move back and forth between the loading conveyor line and the loading station. The unloading transport module drives its corresponding suction cup to move back and forth between the unloading station and the unloading conveyor line.

[0029] As a further example, both the loading and unloading transport module and the unloading transport module are linear rotary robotic arms. The linear rotary robotic arm includes a rotary drive actuator and a linear robotic arm connected to the rotary drive actuator. The end of the linear robotic arm is connected to a suction cup that adsorbs the battery cells downwards. The linear rotary robotic arm can rotate 90° at a time.

[0030] The laser processing equipment for solar cells proposed in this application enables mass production of laser processing on the sides of solar cells by employing a rotary drive module in conjunction with a rotary actuator and two laser processing units located on the side of the solar cells. This eliminates the side plating caused by the processing of the front or back of the solar cells, solving the problem of decreased electrical performance of the solar cells due to plating. Furthermore, while ensuring high throughput, this laser processing equipment processes the sides of solar cells one by one, avoiding the technical problem of damage to solar cells that easily occurs when stacking solar cells for side processing in existing technologies.

[0031] Furthermore, since two laser processing units are used to process both sides of a single solar cell simultaneously, production capacity is further increased. The laser processing equipment also occupies little space and has a rational layout. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0034] Figure 1 This is a schematic diagram of the structure of a laser processing equipment for battery cells according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the arrangement of the support device and the laser processing device according to an embodiment of this application;

[0036] Figure 3 This is a schematic diagram of the arrangement of a positioning device according to an embodiment of this application;

[0037] Figure 4 This is a schematic diagram of the structure of a laser processing apparatus for a battery cell according to another embodiment of this application;

[0038] Figure 5 This is a schematic diagram of the structure of a laser processing apparatus for a battery cell according to another embodiment of this application. Detailed Implementation

[0039] The embodiments of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0040] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] like Figure 1 As shown, this application proposes a laser processing equipment for battery cells, including a support device 100 and a laser processing device 200. The support device 100 includes a rotary drive module, at least two rotary actuators connected to the rotary drive module, and a support platform 110 connected to the rotary actuators respectively. The support platform 110 is used to support the battery cells.

[0042] The rotary drive module includes a loading / unloading station A and a processing station B along its rotation path. The rotary drive module drives a rotary actuator and its connected support platform 110 to reciprocate between loading / unloading station A and processing station B. When at least one support platform 110 is located at loading / unloading station A, at least another support platform 110 is located at processing station B. In other words, the rotary drive module can drive each support platform 110 to rotate through loading / unloading station A and processing station B. Loading / unloading is performed at loading / unloading station A, and processing is performed at processing station B to laser-process the sides of the battery cells.

[0043] More specifically, both the rotary drive module and the rotary actuator are, for example, DD motors. The rotary drive module is a larger DD motor, which can rotate all the rotary actuators and their connected carrier platform 110 through the loading / unloading station A and the processing station B and stop to perform the corresponding operations. The rotary actuator is a smaller DD motor, which can drive the carrier platform 110 connected to it to rotate, so that the battery cell carried by the carrier platform 110 can rotate, thereby allowing the sides of the battery cell to be processed.

[0044] The number of rotary actuators may be, for example, two, three, four, five, etc. Each rotary actuator is connected to a support platform 110. Preferably, all rotary actuators are connected to the rotary drive module at equal intervals. In order to facilitate the installation of the rotary actuators, as described below, the support device 100 also includes a bracket. The bracket is connected to the rotary drive module, and the rotary actuators are connected to the bracket at equal intervals. The shape of the bracket can be designed according to the number of rotary actuators or the number of support platforms 110.

[0045] The laser processing device 200 includes two laser processing units 210. Both laser processing units 210 are located on the side of the processing station B, which is the location of the battery cell when processing the side of the battery cell. When the rotary drive module drives any one of the carrier platforms 110 to move to the processing station B, both laser processing units 210 are located on the side of the carrier platform 110 that has moved to the processing station B. The two laser processing units 210 emit laser beams from the side of the carrier platform 110 to process the two sides of the battery cell.

[0046] When one of the carrier stages 110 moves to the processing station B, preferably two laser processing units 210 simultaneously process the two sides first, and then the rotary actuator drives the carrier stage 110 to rotate, which is to drive the battery cell to rotate. Then the two laser processing units 210 simultaneously complete the laser processing of the remaining two sides, which is to remove the coating.

[0047] The laser processing unit 210 includes a laser that emits a laser beam and a laser scanning mechanism that controls the scanning direction of the laser beam. The laser scanning mechanism includes, for example, a galvanometer and a field lens. Both laser processing units 210 described above are located on the side of the support stage that moves to processing station B. It can be assumed that when the support stage 110 moves to processing station B, the center of the field lens is located on the side of the support stage 110. This arrangement allows the galvanometer to control the laser beam to irradiate the side of the solar cell after passing through the field lens.

[0048] The laser processing equipment for solar cells proposed in this application achieves mass production of laser processing on the sides of solar cells by employing a rotary drive module in conjunction with a rotary actuator and a laser processing unit located on the side of the solar cell. This eliminates the side plating caused by the processing of the front or back of the solar cell, solving the problem of decreased electrical performance of the solar cell due to plating. Furthermore, while ensuring high throughput, the equipment processes the sides of the solar cells one by one, avoiding the technical problem of damage to the solar cells that easily occurs when stacking solar cells for side processing in existing technologies. Moreover, since the loading and unloading stations are combined into one station, solar cell loading and unloading can be performed simultaneously, further increasing throughput.

[0049] Furthermore, since two laser processing units simultaneously process both sides of a single solar cell, production capacity can be further increased. Moreover, this laser processing equipment requires minimal space and has a rational layout.

[0050] Assuming the carrier device 100 has two rotary actuators, i.e., two carrier platforms 110, during operation, when the rotary drive module drives one of the two carrier platforms 110 to the loading / unloading station A, that carrier platform 110 performs battery cell unloading and loading, while the battery cells on the other carrier platform 110 at the processing station B undergo side processing. After all four sides have been processed, the carrier platform 110 at the processing station B rotates to the loading / unloading station A to unload the processed battery cells and load the battery cells to be processed. At the same time, the battery cells previously held by the carrier platform 110 at the loading / unloading station A rotate to the processing station B for side processing, and this process is repeated.

[0051] As a specific embodiment, such as Figure 1 As shown, the supporting device 100 also includes a horizontally arranged and centrally symmetrical linear support 120. The drive shaft of the rotary drive module is vertically arranged and connected to the center of the linear support 120. There are two rotary actuators, which are respectively connected to the two ends of the linear support 120, and the distances from the two support platforms 110 to the center of the linear support 120 are equal. This embodiment has only two support platforms 110, resulting in a small load and a fast rotation speed.

[0052] Furthermore, when the support platform 110 moves to processing station B, the two laser processing units 210 can be located either on the front side of the support platform 110 (where the laser beam directly and perpendicularly irradiates the side of the battery cell), or above or below the side of the support platform 110 (where the irradiation range of the laser beam covers the side of the battery cell). When the laser processing unit 210 is located above or below the side of the support platform 110 moved to processing station B, both laser processing units 210 can be located above or below the side simultaneously, or one can be located above the side and the other below the side.

[0053] To minimize damage to the edges of the solar cell during laser processing, preferably, the two laser processing units 210 are located above or below the side of the processing station B. Specifically, both laser processing units 210 are simultaneously located above or below the side of the support platform 110 that has moved to the processing station B. When the two laser processing units 210 are above the side of the support platform 110, the arrangement of the rotary drive module and the support platform 110 is more flexible, with the surface with the coating facing the support platform 110 and the other surface facing the laser. When the two laser processing units 210 are below the side of the support platform 110, damage to the edges of the upper surface of the solar cell can be avoided when the laser irradiates the side of the solar cell. In this case, the surface with the coating faces away from the support platform 110 and towards the laser. This is particularly beneficial for back-contact solar cells, where the side of the solar cell with electrodes is typically placed upwards on the support platform, thus preventing damage to the edges of the upper surface.

[0054] Furthermore, the two laser processing units 210 are located on opposite sides of the processing station B. When the rotary drive module drives any one of the support platforms 110 to move to the processing station B, both laser processing units 210 are located on opposite sides of the support platform 110 that has moved to the processing station B. After the two laser processing units 210 have processed the opposite sides of the battery cell, the rotary actuator drives the support platform 110 to rotate 90°, and the two laser processing units 210 process the remaining opposite sides of the battery cell, for example... Figure 1 , Figure 3 As shown; or, two laser processing units 210 are located on adjacent sides of processing station B. When the rotary drive module drives any one of the carrier platforms 110 to move to processing station B, both laser processing units 210 are located on adjacent sides of the carrier platform 110 that has moved to processing station B. After the two laser processing units have processed the adjacent sides of the battery cell, the rotary actuator drives the carrier platform to rotate 180°. After the two laser processing units 210 have processed the remaining adjacent sides of the battery cell, the two laser processing units 210 are located on the same side of the rotary drive module, for example, as shown. Figure 2 As shown.

[0055] As another embodiment, such as Figure 1 As shown, the laser processing equipment also includes a parallel and separate loading conveyor line 300 and a unloading conveyor line 400, which transport battery cells in opposite directions along the first direction. The carrying device 100 is located between the loading conveyor line 300 and the unloading conveyor line 400.

[0056] The laser processing equipment also includes a loading and unloading conveying module 500, which is used to pick up the battery cells to be processed on the loading conveyor line 300 and pick up the processed battery cells that have been moved to the carrier platform 110 of the loading and unloading station A, or to place the battery cells to be processed on the carrier platform 110 that has been moved to the loading and unloading station A and place the processed battery cells on the unloading conveyor line 400.

[0057] Specifically, both the loading conveyor line 300 and the unloading conveyor line 400 are belt conveyor lines. To facilitate loading and unloading, both the loading conveyor line 300 and the unloading conveyor line 400 include multiple sections of belt conveyor lines. Preferably, the loading conveyor line 300 and the unloading conveyor line 400 have opposite conveying directions. For example, the loading conveyor line 300 conveys battery cells along the positive X-axis, and the unloading conveyor line 400 conveys battery cells along the negative X-axis, which facilitates loading and unloading and equipment layout.

[0058] Furthermore, the loading and unloading handling module 500 is an L-shaped rotary robotic arm, such as... Figure 1 As shown, the L-shaped rotary robotic arm includes a rotary drive actuator and two mutually perpendicular robotic arms connected to the rotary drive actuator. The ends of the two robotic arms are respectively connected to suction cups that adsorb battery cells downwards. The L-shaped rotary robotic arm can rotate 90° at a time. The rotary drive actuator is, for example, a motor or a cylinder.

[0059] Alternatively, the loading / unloading transfer module 500 can be a linear robotic arm (not shown in the figure). The linear robotic arm includes a linear drive actuator and two spaced-apart, downward-facing suction cups connected to the linear drive actuator to attract battery cells. The linear drive actuator drives the two suction cups to move in a second direction, that is, along a conveying direction perpendicular to the belt conveyor line. The second direction is perpendicular to the first direction. The linear drive actuator can be, for example, a motor or a cylinder. It should be noted that when the loading / unloading transfer module 500 is a linear robotic arm… Figure 1 The loading conveyor line 300 and unloading conveyor line 400 are slightly longer than shown in the diagram to facilitate loading and unloading by the linear robotic arm.

[0060] Both of the above embodiments of the loading and unloading conveying module 500 can realize the loading of battery cells from the loading conveyor 300 to the carrier 110 and the unloading of battery cells from the carrier 110 to the unloading conveyor 400. Furthermore, since the loading and unloading conveying module 500 also has two suction cups, the two suction cups can work simultaneously to unload finished battery cells and load cells to be processed, thereby increasing production capacity. The difference between the two embodiments is that the L-shaped rotary robotic arm switches its working state by rotational motion, while the linear robotic arm switches its working state by linear motion along a second direction.

[0061] As another embodiment, the laser processing equipment also includes a positioning device for adjusting the position of the battery cells. This application provides at least two embodiments.

[0062] In the first case, the positioning device is set at the loading and unloading station A. After the carrier platform 110 moves to the loading and unloading station A and receives the battery cells, the positioning device clamps and positions the battery cells from the four sides toward the center.

[0063] More specifically, as one example, the positioning device includes a motor and four clamping components. The motor drives the clamping components located around the battery cell, or two motors each drive two clamping components to clamp the battery cell. Each clamping component is equipped with alignment wheels. The alignment wheels move from the four sides of the battery cell towards the center to complete the clamping and positioning of the battery cell. The clamping components can be mechanically connected to the motor. When the clamping components clamp inward, the alignment wheels move upward synchronously, so that the height of the alignment wheels is higher than the platform surface of the support table to position the battery cell. When the alignment wheels are driven outward by the motor, they move downward synchronously to avoid the suction cups that transport the battery cell. After the battery cell is clamped and positioned at the loading / unloading station A, it is moved to the processing station B for processing. The specific structure of the positioning device is not limited, as long as it can complete the clamping and positioning function and does not interfere with other components.

[0064] Or, the second one, such as Figure 3 As shown, the laser processing equipment also includes a loading and conveying line 300, which includes a positioning belt 310 corresponding to the loading and unloading station A. The positioning belt 310 is located at the end of the loading and conveying line 300, and a positioning device is set at the location of the positioning belt 310. After the positioning belt 310 receives the battery cell, the positioning device clamps and positions the battery cell from four sides toward the center. The specific structure of the positioning device can be referred to the above embodiment. It should be noted that the height of the alignment wheel on the clamping component is higher than the belt height in the positioning belt 310 but lower than the height of the suction cup used to transport the battery cell. When other belts in the loading and conveying line 310 transport the battery cell to the positioning belt 310, the motor drives the alignment wheel to move toward the center of the battery cell, thereby completing the clamping and positioning of the battery cell. The suction cup used to transport the battery cell then picks up the positioned battery cell and moves it to the support platform 110 above the loading and unloading station A for battery cell loading.

[0065] The positioning device of this application is not limited to the above example; it can be used as long as it can achieve the positioning of the battery cell before processing.

[0066] To further increase production capacity, a support device with two processing stations can also be installed. According to another aspect of this application, a laser processing device for battery cells is also proposed, such as… Figure 4As shown, the system includes a support device 100 and a laser processing module 200. The support device 100 includes a rotary drive module, a horizontally arranged and centrally symmetrical I-shaped support 130, four rotary actuators connected to the four ends of the I-shaped support 130, and support platforms 110 connected to the rotary actuators one by one. The distance from the support platform 110 to the center of the I-shaped support 130 is equal. The drive shaft of the rotary drive module is vertically arranged and connected to the center of the I-shaped support 130.

[0067] The rotary drive module has two loading / unloading stations A and two processing stations B on its rotation path. The rotary drive module drives the rotary actuator and its connected support platform 110 to reciprocate between the loading / unloading stations A and the processing stations B. The rotary drive module is used to drive two of the support platforms 110 to be located at the two loading / unloading stations A, while the other two support platforms 110 are located at the two processing stations B.

[0068] The laser processing device includes four laser processing units 210. Two laser processing units 210 are provided on the side of each processing station B. Processing station B is the location of the battery cell when processing the side of the battery cell. When the rotary drive module drives any one of the carrier platforms 110 to move to processing station B, two laser processing units 210 are located on the side of the carrier platform 110 that has moved to processing station B. The two laser processing units 210 emit laser beams from their corresponding carrier platform 110 sides to process the two sides of the battery cell.

[0069] The specific structures of the rotary drive module, rotary actuator, and laser processing unit 210 can all refer to the description in the above embodiment. In this embodiment, two battery cells can be simultaneously loaded onto the two carrier platforms 110 that move to the loading / unloading station A, and then simultaneously rotated to the two processing stations B, where the two battery cells are simultaneously subjected to side decoating, thereby further increasing production capacity.

[0070] The laser processing equipment for the solar cells in this embodiment can also achieve mass production of laser processing on the sides of solar cells to remove the side plating caused by the processing of the front or back of the solar cells, thus solving the problem of decreased electrical performance of the solar cells caused by plating.

[0071] Considering the convenience of structural design, such as Figure 4As shown, more preferably, the two laser processing units 210 on each side of processing station B are located on the two adjacent sides of their corresponding processing station B. When the rotary drive module drives the two carrier platforms 110 to move to processing station B respectively, the two laser processing units 210 form a group and are located on the two adjacent sides of the carrier platform 110 that has moved to their corresponding processing station B. After the two laser processing units 210 corresponding to each processing station B have finished processing the two adjacent sides of the battery cell, the rotary actuator drives the carrier platform 110 to rotate 180°, and all laser processing units 210 have finished processing the remaining two adjacent sides of their respective battery cells.

[0072] Specifically, when the support platform 110 moves to the processing station B, the laser processing unit 210 can be located on the front side of the support platform 110, or above or below the side of the support platform 110. When the laser processing unit 210 is located above or below the side of the support platform 110 moved to the processing station B, it can be that two laser processing units 210 are simultaneously located above or below the side, or one is located above the side and the other is located below the side.

[0073] To minimize damage to the edges of the solar cells during laser processing, preferably, the two laser processing units 210 are located above or below the side of the processing station B, that is, the two laser processing units 210 are simultaneously located above the side of the support platform 110 that has been moved to the processing station B, or simultaneously located below the side of the support platform 110 that has been moved to the processing station B.

[0074] For the loading and unloading method in this embodiment, the laser processing equipment also includes a parallel and separately arranged loading conveyor line 300 and an unloading conveyor line 400, which transport battery cells in opposite directions along the first direction. The carrying device 100 is located between the loading conveyor line 300 and the unloading conveyor line 400. To load and unload multiple battery cells simultaneously more quickly, an L-shaped rotary conveyor arm can be used. Each end of the L-shaped rotary conveyor arm has two suction cups, allowing for the simultaneous loading and unloading of two battery cells. Of course, other forms of conveyor arms are also possible, as long as they achieve the corresponding function; these will not be elaborated upon here.

[0075] Other specific structures of the laser processing equipment, such as the positioning device, can be found in the description of the laser processing equipment in the above embodiments. The difference may be that the number of embodiments in this application is two.

[0076] According to another aspect of this application, a laser processing apparatus for battery cells of another embodiment is also proposed, such as... Figure 5As shown, the device includes a support device 100 and a laser processing device 200. The support device 100 includes a rotary drive module, a horizontally arranged and centrally symmetrical support frame 140, four rotary actuators connected to the support frame 140, and a support platform 110 connected to each rotary actuator. The distance from the support platform 110 to the center of the support frame 140 is equal. The drive shaft of the rotary drive module is vertically arranged and connected to the center of the support frame 140.

[0077] The rotary drive module has a loading station D, a processing station B and a unloading station C arranged sequentially on its rotation path. The rotary drive module drives the rotary actuator and its connected support platform 110 to rotate sequentially through the loading station D, the processing station B and the unloading station C.

[0078] The laser processing device 200 includes two laser processing units 210. Both laser processing units 210 are located on the side of the processing station B, which is the location of the battery cell when processing the side of the battery cell. When the rotary drive module drives any one of the carrier platforms 110 to move to the processing station B, both laser processing units 210 are located on the side of the carrier platform 110 that has moved to the processing station B.

[0079] The specific structures of the rotary drive module, rotary actuator, and laser processing unit 210 can all refer to the description in the above embodiment. In this embodiment, since the loading station D and unloading station C are set separately, loading and unloading can be carried out simultaneously, which can also improve production capacity. In addition, it can adapt to more application scenarios.

[0080] This embodiment provides another embodiment of laser processing equipment for solar cells, which can also realize mass production of laser processing of the side of solar cells to remove the side plating caused by the processing of the front or back of the solar cells, and solve the problem of the decline in the electrical performance of the solar cells caused by plating.

[0081] Specifically, when the support platform 110 moves to the processing station B, the laser processing unit 210 can be located on the front side of the support platform 110, or above or below the side of the support platform 110. When the laser processing unit 210 is located above or below the side of the support platform 110 moved to the processing station B, it can be that two laser processing units 210 are simultaneously located above or below the side, or one is located above the side and the other is located below the side.

[0082] To minimize damage to the edges of the solar cells during laser processing, preferably, the two laser processing units 210 are located above or below the side of the processing station B, that is, the two laser processing units 210 are simultaneously located above the side of the support platform 110 that has been moved to the processing station B, or simultaneously located below the side of the support platform 110 that has been moved to the processing station B.

[0083] in, Figure 5 In the example, the two laser processing units 210 located at processing station B are arranged adjacently, but they can also be arranged opposite each other. Furthermore, the advantages of having the two laser processing units 210 located above or below the side of the support stage 110 that moves to processing station B can be found in the description above.

[0084] This embodiment provides a laser processing device for solar cells with an alternative layout. It also utilizes a rotary drive module in conjunction with a laser processing unit positioned on the side of the solar cell to achieve mass production of laser processing on the side of the solar cell. This eliminates side plating caused by processing the front or back of the solar cell, solving the problem of decreased electrical performance due to plating. Furthermore, while ensuring high production capacity, processing the side of each solar cell individually avoids the technical problem of damage to the solar cells caused by stacking and processing them in existing technologies.

[0085] Among them, such as Figure 5 As shown, the support frame 140 is cross-shaped.

[0086] For the loading and unloading method of this embodiment, the laser processing equipment also includes a parallel and separately arranged loading conveyor line 300 and unloading conveyor line 400, which can transport battery cells in opposite directions along the first direction. The carrier device 100 is located between the loading conveyor line 300 and the unloading conveyor line 400.

[0087] The laser processing equipment also includes a loading and unloading transport module 610 and an unloading transport module 620. Both the loading and unloading transport module 610 and the unloading transport module 620 include a transport drive actuator and a suction cup connected to the transport drive actuator. The loading and unloading transport module 610 drives its corresponding suction cup to move back and forth between the loading conveyor line 300 and the loading station D. The unloading transport module 620 drives its corresponding suction cup to move back and forth between the unloading station C and the unloading conveyor line 400.

[0088] Considering that this embodiment separates the loading station D and the unloading station C, to further improve production capacity, both the loading and unloading handling module 610 and the unloading handling module 620 are linear rotary robotic arms. Each linear rotary robotic arm includes a rotary drive actuator and a linear robotic arm connected to the rotary drive actuator. The ends of the linear robotic arm are respectively connected to suction cups that adsorb battery cells downwards. The linear rotary robotic arm can rotate 90° at a time. This linear rotary robotic arm has a fast movement speed, which can further improve production capacity. The rotary drive actuator can be, for example, a motor or a cylinder. Of course, other forms of handling arms are also possible, as long as they can achieve the corresponding functions, and will not be elaborated further here.

[0089] The various embodiments in this specification are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. For the apparatuses disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0090] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser processing device for battery cells, comprising a support device and a laser processing device, characterized in that, The support device includes a rotary drive module, at least two rotary actuators connected to the rotary drive module, and support platforms connected to the rotary actuators one by one. The rotary drive module has loading / unloading stations and processing stations on its rotation path. The rotary drive module drives the rotary actuator and its connected support platform to reciprocate between the loading / unloading stations and the processing stations. When at least one support platform is located at the loading / unloading station, at least another support platform is located at the processing station. The laser processing device includes two laser processing units, both of which are located on the side of the processing station. The processing station is the location of the battery cell when processing the side of the battery cell. When the rotary drive module drives any one of the carriers to move to the processing station, both laser processing units are located on the side of the carrier that has moved to the processing station. The two laser processing units emit laser beams from the side of the carrier to process the two sides of the battery cell.

2. The laser processing equipment for battery cells according to claim 1, characterized in that, The bearing device also includes a horizontally arranged and centrally symmetrical linear support, and the drive shaft of the rotary drive module is vertically arranged and connected to the center of the linear support; The number of rotary actuators is two, and the two rotary actuators are respectively connected to the two ends of the linear support, and the distances from the two support platforms to the center of the linear support are equal.

3. The laser processing equipment for battery cells according to claim 1 or 2, characterized in that, The two laser processing units are located above or below the side of the processing station. When the rotary drive module drives any one of the carriers to move to the processing station, both laser processing units are located above or below the side of the carrier that has moved to the processing station.

4. The laser processing equipment for battery cells according to claim 1 or 2, characterized in that, The two laser processing units are located on opposite sides of the processing station. When the rotary drive module drives any one of the carriers to move to the processing station, the two laser processing units are located on opposite sides of the carrier that has moved to the processing station. After the two laser processing units have processed the opposite sides of the battery cell, the rotary actuator drives the carrier to rotate 90°, and the two laser processing units have processed the remaining opposite sides of the battery cell. Alternatively, the two laser processing units are located on two adjacent sides of the processing station. When the rotary drive module drives any one of the carriers to move to the processing station, the two laser processing units are located on two adjacent sides of the carrier that has moved to the processing station. After the two laser processing units have processed the two adjacent sides of the battery cell, the rotary actuator drives the carrier to rotate 180°, and the two laser processing units have processed the remaining two adjacent sides of the battery cell.

5. The laser processing equipment for battery cells according to claim 1, characterized in that, The laser processing unit includes a laser that emits a laser beam and a laser scanning mechanism that controls the scanning direction of the laser beam. The laser scanning mechanism includes a galvanometer and a field lens. The field lens is fixedly installed, and its center is located on the side of the processing station.

6. The laser processing equipment for battery cells according to claim 1, characterized in that, The laser processing equipment also includes a parallel and separate loading conveyor line and a unloading conveyor line, which transport battery cells in opposite directions along a first direction. The carrying device is located between the loading conveyor line and the unloading conveyor line. The laser processing equipment also includes a loading and unloading conveying module, which is used to pick up the battery cells to be processed on the loading conveyor line and pick up the processed battery cells that have been moved to the carrier platform of the loading and unloading station, or to place the battery cells to be processed on the carrier platform that has been moved to the loading and unloading station and place the processed battery cells on the unloading conveyor line.

7. The laser processing equipment for battery cells according to claim 6, characterized in that, The loading and unloading handling module is an L-shaped rotary robotic arm. The L-shaped rotary robotic arm includes a rotary drive actuator and two mutually perpendicular robotic arms connected to the rotary drive actuator. The ends of the two robotic arms are respectively connected to suction cups that adsorb battery cells downwards. The L-shaped rotary robotic arm can rotate 90° at a time. Alternatively, the loading and unloading transport module is a linear robotic arm, which includes a linear drive actuator and two spaced-apart suction cups for adsorbing battery cells connected to the linear drive actuator. The linear drive actuator drives the two suction cups to move along a second direction, which is perpendicular to the first direction.

8. The laser processing equipment for battery cells according to claim 1, characterized in that, The laser processing equipment also includes a positioning device for adjusting the position of the battery cells; The positioning device is located at the loading and unloading station. After the carrier moves to the loading and unloading station and receives the battery cell, the positioning device clamps and positions the battery cell from the four sides toward the center. Alternatively, the laser processing equipment may also include a loading and conveying line, which includes a positioning belt line corresponding to the loading and unloading stations. The positioning device is located at the position of the positioning belt line. After the positioning belt line receives the battery cell, the positioning device clamps and positions the battery cell from four sides toward the center.

9. A laser processing device for battery cells, comprising a support device and a laser processing device, characterized in that, The supporting device includes a rotary drive module, a horizontally arranged and centrally symmetrical I-shaped support, four rotary actuators connected to the four ends of the I-shaped support, and a support platform connected to each rotary actuator. The distance from the support platform to the center of the I-shaped support is equal. The drive shaft of the rotary drive module is vertically arranged and connected to the center of the I-shaped support. The rotary drive module has two loading / unloading stations and two processing stations on its rotation path. The rotary drive module drives the rotary actuator and its connected support platform to reciprocate between the loading / unloading stations and the processing stations. The rotary drive module is used to drive two of the support platforms to be located at the two loading / unloading stations, while the other two support platforms are located at the two processing stations. The laser processing device includes four laser processing units. Two laser processing units are arranged on the side of each processing station. The processing station is the location of the battery cell when processing the side of the battery cell. When the rotary drive module drives any one of the carriers to move to the processing station, two of the laser processing units are located on the side of the carrier that has moved to the processing station. The two laser processing units emit laser beams from their corresponding carrier side to process the two sides of the battery cell.

10. The laser processing equipment for battery cells according to claim 9, characterized in that, The two laser processing units on each processing station side are located on the two sides adjacent to their corresponding processing station. When the rotary drive module drives the two carriers to move to the processing station, the two laser processing units form a group and are located on the two sides adjacent to the carriers that have moved to their corresponding processing station. After the two laser processing units corresponding to each processing station have processed the two sides adjacent to the battery cell, the rotary actuator drives the carrier to rotate 180°, and the two laser processing units have processed the remaining two sides adjacent to the battery cell.

11. A laser processing device for battery cells, comprising a support device and a laser processing device, characterized in that, The supporting device includes a rotary drive module, a horizontally arranged and centrally symmetrical support frame, four rotary actuators connected to the support frame, and a support platform connected to each rotary actuator. The distance from the support platform to the center of the support frame is equal. The drive shaft of the rotary drive module is vertically arranged and connected to the center of the support frame. The rotary drive module has a loading station, a processing station and a unloading station arranged sequentially on its rotation path. The rotary drive module drives the rotary actuator and its connected support platform to rotate sequentially through the loading station, the processing station and the unloading station. The laser processing device includes two laser processing units, both of which are located on the side of the processing station. The processing station is the location of the battery cell when processing the side of the battery cell. When the rotary drive module drives any one of the carriers to move to the processing station, both laser processing units are located on the side of the carrier that has moved to the processing station. The two laser processing units emit laser beams from the side of the carrier to process the two sides of the battery cell.

12. The laser processing equipment for battery cells according to claim 11, characterized in that, The support frame is cross-shaped, and the laser processing equipment also includes parallel and separate loading and unloading conveyor lines, with the bearing device located between the loading and unloading conveyor lines. The laser processing equipment also includes a loading and unloading transport module and an unloading transport module. Both include a transport drive actuator and a suction cup connected to the transport drive actuator. The loading and unloading transport module drives its corresponding suction cup to move back and forth between the loading conveyor line and the loading station. The unloading transport module drives its corresponding suction cup to move back and forth between the unloading station and the unloading conveyor line.

13. The laser processing equipment for battery cells according to claim 12, characterized in that, Both the loading and unloading transport modules are linear rotary robotic arms. The linear rotary robotic arm includes a rotary drive actuator and a linear robotic arm connected to the rotary drive actuator. The end of the linear robotic arm is connected to a suction cup that adsorbs the battery cells downwards. The linear rotary robotic arm can rotate 90° at a time.

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