Photovoltaic cell laser scribing device
By introducing cold air cooling and suction cup separation technology into the photovoltaic cell cutting device, the problem of thermal expansion at the cutting point of the photovoltaic cell is solved, achieving rapid heat dissipation and efficient separation, thereby improving the quality and efficiency of the photovoltaic cell.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LINENGPAI (FENGSHUN) OPTOELECTRONICS CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-12
AI Technical Summary
Existing laser scribing devices are prone to thermal expansion at the cut point during photovoltaic cell cutting, resulting in poor cooling and affecting cell quality.
A photovoltaic cell laser scribing device was designed. The device uses a fan to introduce cold air to cool the cutting area, and uses a suction cup and fiber laser for rapid separation. Combined with a guide component and push plate structure, it can achieve rapid material unloading.
This technology enables rapid heat dissipation of photovoltaic cells, avoids thermal expansion, improves cooling effect and separation efficiency, and enhances the quality and efficiency of the cells.
Smart Images
Figure CN224222990U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photovoltaic cell laser scribing technology, specifically a photovoltaic cell laser scribing device. Background Technology
[0002] Photovoltaic cells directly convert light energy into electrical energy through the photoelectric effect or photochemical effect. They are part of renewable energy technology. In the process of cutting photovoltaic cells, a laser scribing device is required to cut the photovoltaic cells.
[0003] A Chinese patent with authorization announcement number CN 221817631 U discloses a laser scribing device for photovoltaic cells. This utility model relates to the field of solar cell scribing technology, and includes a base plate. A cutting platform is fixedly mounted on the upper surface of the base plate, and a cutting assembly is slidably disposed on the lower surface of the cutting platform. The cutting assembly includes a connecting shaft, and multiple cutting blades are fixedly connected to the periphery of the connecting shaft. The periphery of the cutting blades penetrates the cutting platform and contacts the solar cell. Clamps for holding and fixing the solar cell are fixedly mounted on both sides of the upper surface of the cutting platform. This photovoltaic cell laser scribing device, by setting the cutting assembly at the bottom of the cutting platform, allows the cutting blades on the cutting assembly to penetrate the cutting platform and contact the solar cell. This enables the laser cutter to create a deep groove in the solar cell, and the sliding cutting assembly allows the cutting blades to cut along the deep groove, thus enabling mechanical cutting of the solar cell without the need for manual breaking.
[0004] In existing laser scribing devices, the cut edges of photovoltaic cells are prone to thermal expansion during the scribing process. Due to the inability to quickly dissipate heat from the cut edges, the cooling effect on the photovoltaic cells is poor, affecting their quality. Therefore, a new laser scribing device for photovoltaic cells is proposed to address the above problems. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology and solve the problems existing in the existing technology, this utility model proposes a photovoltaic cell laser scribing device.
[0006] The technical solution adopted by this utility model to solve its technical problem is a photovoltaic cell laser scribing device, including a base, a control panel installed on the side wall of the base, a fan installed on the side wall of the base, an air guide pipe installed on the fan, a material guide groove opened on the base, a scribing block placed on the inner wall of the material guide groove, the scribing block having a cavity inside, multiple exhaust holes symmetrically opened on the side wall of the scribing block, the scribing block being connected to the air guide pipe, two sets of plate grooves opened on the inner wall of the material guide groove, push plates being assembled in the plate grooves, two first electric telescopic rods opened inside the base, first push rods installed on the first electric telescopic rods, the first push rods being connected to the push plates, and two material outlets opened on the base. A guide hopper is installed on the side wall of the base at the discharge port. A placement platform is placed on the base, and photovoltaic cells are placed on the placement platform. After the photovoltaic cells are diced, two photovoltaic cells slide down the slope of the diced block into the guide trough. The cut part of the photovoltaic cell is directly opposite the exhaust port. A fan guides cold air into the air duct, and then the cold air enters the cavity of the diced block from the air duct and then exits from the exhaust ports on both sides of the diced block. The cold air blows and cools the cut part of the photovoltaic cell, realizing rapid heat dissipation at the cut part of the photovoltaic cell, avoiding thermal expansion at the cut part of the photovoltaic cell, which is conducive to improving the cooling effect of the photovoltaic cell and improving the quality of the photovoltaic cell.
[0007] Preferably, a first guide assembly is mounted on the base via a support frame. The first guide assembly includes a first guide plate with a first guide groove inside. A first stepper motor is mounted on the side wall of the first guide plate via a base. A first lead screw is mounted on the output shaft of the first stepper motor and rotatably mounted on the inner wall of the first guide groove. A first guide block is assembled in the first guide groove. A first connecting block is mounted on the first guide block. A second electric telescopic rod is mounted on the first connecting block. A second push rod is mounted on the second electric telescopic rod. A fixing plate is mounted on the bottom side of the second push rod. Two suction cups are mounted on the bottom side of the fixing plate. Each suction cup has a cavity inside and multiple suction holes on its bottom side. A vacuum pump is mounted on the first connecting block via a base. The vacuum pump... A gas guide box is connected to the gas guide tube, and the gas guide box is connected to two suction cups respectively through the gas guide tube. An exhaust pipe is installed on the gas guide box, and a solenoid valve is installed on the exhaust pipe. A second guide assembly is installed on the bottom side of the first connecting block. The second guide assembly has the same structure as the first guide assembly. A fiber laser is installed on the second connecting block inside the second guide assembly. The fiber laser moves horizontally and emits a laser beam towards the photovoltaic cell, realizing the dicing of the photovoltaic cell. Then, the two suction cups move the diced photovoltaic cell to the guide trough. Then, the two suction cups release the photovoltaic cell, and the photovoltaic cell falls onto the dicing block. The photovoltaic cell will split into two pieces along the central cutting line, realizing the rapid separation of the photovoltaic cell and improving the efficiency of photovoltaic cell dicing.
[0008] The advantages of this utility model are:
[0009] 1. In this invention, after the photovoltaic cells are diced, two photovoltaic cells slide down the slope of the dicing block into the guide trough. The cut edge of the photovoltaic cell is directly opposite the exhaust port. A fan guides cold air into the air duct, and then the cold air enters the cavity of the dicing block from the air duct and is discharged from the exhaust ports on both sides of the dicing block. The cold air blows and cools the cut edge of the photovoltaic cell, achieving rapid heat dissipation at the cut edge of the photovoltaic cell, avoiding thermal expansion at the cut edge, improving the cooling effect of the photovoltaic cell, and thus improving the quality of the photovoltaic cell.
[0010] 2. This invention uses a horizontally moving fiber laser to simultaneously emit a laser beam onto the photovoltaic cell, thus dicing the photovoltaic cell. Two suction cups then move the diced photovoltaic cell to the guide trough, where they release it onto the dicing block. The photovoltaic cell then splits into two pieces along the central cutting line, achieving rapid separation of the photovoltaic cell and improving the efficiency of photovoltaic cell dicing. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a first-person perspective 3D structural diagram;
[0013] Figure 2 A schematic diagram of the three-dimensional structure at the fractured block;
[0014] Figure 3 This is a schematic diagram of the three-dimensional structure at the first guide plate.
[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the suction cup.
[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the fiber laser.
[0017] In the diagram: 1. Base; 2. Control panel; 3. Fan; 4. Air duct; 5. Material guide trough; 6. Fragment block; 7. Exhaust port; 8. Push plate; 9. Material guide hopper; 10. Placement platform; 11. Photovoltaic cell; 12. First guide plate; 13. First guide trough; 14. First stepper motor; 15. First lead screw; 16. First guide block; 17. First connecting block; 18. Second electric telescopic rod; 19. Second push rod; 20. Suction cup; 21. Vacuum pump; 22. Air guide box; 23. Exhaust pipe; 24. Solenoid valve; 25. Second guide assembly; 26. Fiber laser. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0019] Please see Figure 1-2As shown, a photovoltaic cell laser scribing device includes a base 1, a control panel 2 mounted on the side wall of the base 1, a fan 3 mounted on the side wall of the base 1, an air duct 4 mounted on the fan 3, a material guide trough 5 on the base 1, a scribing block 6 placed on the inner wall of the material guide trough 5, the scribing block 6 having a cavity inside, and multiple exhaust holes 7 symmetrically opened on the side wall of the scribing block 6. The scribing block 6 is connected to the air duct 4. Two sets of plate grooves are opened on the inner wall of the material guide trough 5, and push plates 8 are assembled in the plate grooves. Two first electric telescopic rods are opened inside the base 1, and first push rods are mounted on the first electric telescopic rods. A push rod is connected to a push plate 8. Two discharge ports are provided on the base 1. A guide hopper 9 is installed on the side wall of the base 1 at the discharge ports. A placement platform 10 is placed on the base 1, and photovoltaic cells 11 are placed on the placement platform 10. During operation, in the existing laser scribing device, the cut area of the photovoltaic cell 11 is prone to thermal expansion due to heat. Because it is impossible to quickly dissipate heat from the cut area, the cooling effect of the photovoltaic cell 11 is poor, affecting the quality of the photovoltaic cell 11. This is addressed by completing the scribing process of the photovoltaic cell 11. After completion, the two suction cups 20 release the photovoltaic cell 11, which falls onto the splitting block 6. The photovoltaic cell 11 splits into two pieces along the central cutting line. The two pieces of photovoltaic cell 11 slide down the slope of the splitting block 6 into the guide trough 5. The cut edge of the photovoltaic cell 11 is directly opposite the exhaust port 7. The fan 3 operates, guiding cold air into the air duct 4. The cold air then enters the cavity of the splitting block 6 from the air duct 4 and exits from the exhaust ports 7 on both sides of the splitting block 6. The cold air blows and cools the cut edge of the photovoltaic cell 11, thus achieving the desired cooling effect. The rapid heat dissipation at the cut point of the photovoltaic cell 11 prevents thermal expansion at the cut point. Then, through the operation of two first electric telescopic rods, the two first electric telescopic rods drive two push plates 8 to move horizontally. The two push plates 8 push the two photovoltaic cells 11 horizontally and push them into the guide hopper 9, realizing the rapid unloading of the two photovoltaic cells. This structure can quickly dissipate heat at the cut point of the photovoltaic cell 11, which is beneficial to improving the cooling effect of the photovoltaic cell 11 and improving the quality of the photovoltaic cell 11.
[0020] Please see Figure 3-5As shown, a first guide assembly is mounted on the base 1 via a support frame. The first guide assembly includes a first guide plate 12, within which a first guide groove 13 is formed. A first stepper motor 14 is mounted on the side wall of the first guide plate 12 via a base. A first lead screw 15 is mounted on the output shaft of the first stepper motor 14. The first lead screw 15 is rotatably mounted on the inner wall of the first guide groove 13. A first guide block 16 is assembled within the first guide groove 13. A first connecting block 17 is mounted on the first guide block 16. A second electric telescopic rod 18 is installed on block 17, and a second push rod 19 is installed on the second electric telescopic rod 18. A fixing plate is installed on the bottom side of the second push rod 19, and two suction cups 20 are installed on the bottom side of the fixing plate. The suction cups 20 have cavities inside and multiple suction holes on their bottom sides. A vacuum pump 21 is installed on the first connecting block 17 via a base. The vacuum pump 21 is connected to a gas guide box 22 via a gas guide pipe. The gas guide box 22 is connected to the two suction cups 20 via gas guide pipes. An exhaust pipe 23 is installed on the gas guide box 22. A solenoid valve 24 is installed on the air pipe 23, and a second guide component 25 is installed on the bottom side of the first connecting block 17. The second guide component 25 has the same structure as the first guide component. A fiber laser 26 is installed on the second connecting block inside the second guide component 25. During operation, the existing laser scribing device is difficult to quickly separate the photovoltaic cell 11 after scribing, resulting in poor efficiency in slicing the photovoltaic cell 11. By placing the photovoltaic cell 11 on the placement platform 10, the second electric telescopic rod 18 is operated by the control panel 2, and the second push rod 19 drives the two suction cups 20 to move vertically downward, so that the two suction cups 20 are in contact with the photovoltaic cell 11. Then, the vacuum pump 21 is operated to extract the air inside the two suction cups 20, so that a vacuum state is formed inside the two suction cups 20. The air pressure inside the two suction cups 20 is lower than the external atmospheric pressure. Under the action of the air pressure difference, the two suction cups 20 generate an adsorption force on the photovoltaic cell 11, thus realizing the adsorption of the photovoltaic cell 11 by the two suction cups 20.
[0021] Then the second guide assembly 25 operates, driving the second lead screw to rotate via the second stepper motor. The second lead screw drives the second guide block on it to move horizontally, which in turn drives the second connecting block to move horizontally. The second connecting block then drives the fiber laser 26 to move horizontally. The fiber laser 26 is a CorePower-1200-CW-1080-SM. Simultaneously, the fiber laser 26 emits a laser beam towards the photovoltaic cell 11, thus dicing and cutting the photovoltaic cell 11.
[0022] Then, the second electric telescopic rod 18 operates again, and the second push rod 19 drives the two suction cups 20 to move vertically upward. The two suction cups 20 drive the photovoltaic cell 11 that has been divided to move vertically upward.
[0023] Then the first guide component operates, and the first step motor 14 operates to drive the first lead screw 15 to rotate. The first lead screw 15 drives the first guide block 16 on it to move horizontally. The first guide block 16 drives the first connecting block 17 to move horizontally. The first connecting block 17 drives the two suction cups 20 to move horizontally. The two suction cups 20 drive the photovoltaic cell 11 that has been divided to move horizontally, so that the photovoltaic cell 11 moves to the material guide trough 5.
[0024] Then, the second push rod 19 drives the two suction cups 20 to move vertically downwards. The two suction cups 20 drive the diced photovoltaic cell 11 to move vertically downwards. Then, the control panel 2 controls the solenoid valve 24 on the exhaust pipe 23 to open, the vacuum state inside the suction cups 20 disappears, and the two suction cups 20 release the photovoltaic cell 11. The photovoltaic cell 11 falls onto the dicing block 6 and splits into two pieces along the central cutting line, realizing the rapid separation of the photovoltaic cell 11, which is beneficial to improving the efficiency of dicing the photovoltaic cell 11.
[0025] Working principle: Existing laser scribing devices struggle to quickly separate photovoltaic cells 11 after scribing, resulting in poor efficiency in dicing. To address this, the photovoltaic cell 11 is placed on the placement platform 10. The control panel 2 operates the second electric telescopic rod 18, and the second push rod 19 moves the two suction cups 20 vertically downwards, bringing them into contact with the photovoltaic cell 11. Then, the vacuum pump 21 extracts air from the suction cups 20, creating a vacuum inside them. The air pressure inside the disk 20 is lower than the external atmospheric pressure. Under the action of the pressure difference, the two suction cups 20 generate an adsorption force on the photovoltaic cell 11, realizing the adsorption of the photovoltaic cell 11 by the two suction cups 20. Then, the second guide component 25 operates, driving the second lead screw to rotate through the second stepper motor. The second lead screw drives the second guide block on it to move horizontally. The second guide block drives the second connecting block to move horizontally. The second connecting block drives the fiber laser 26 to move horizontally. At the same time, the fiber laser 26 emits a laser beam towards the photovoltaic cell 11, realizing the dicing of the photovoltaic cell 11, thus realizing the dicing of the photovoltaic cell 11. The solar cell 11 is cut; then, the second electric telescopic rod 18 operates again, and the second push rod 19 drives the two suction cups 20 to move vertically upward. The two suction cups 20 drive the diced photovoltaic cell 11 to move vertically upward. Then, the first guide assembly operates, and the first stepper motor 14 operates, driving the first lead screw 15 to rotate. The first lead screw 15 drives the first guide block 16 on it to move horizontally. The first guide block 16 drives the first connecting block 17 to move horizontally. The first connecting block 17 drives the two suction cups 20 to move horizontally. The two suction cups 20 drive the diced photovoltaic cell 11 to move horizontally. This causes the photovoltaic cell 11 to move to the guide trough 5; then the second push rod 19 drives the two suction cups 20 to move vertically downwards, and the two suction cups 20 drive the diced photovoltaic cell 11 to move vertically downwards. Then the control panel 2 controls the solenoid valve 24 on the exhaust pipe 23 to open, the vacuum state inside the suction cups 20 disappears, the two suction cups 20 release the photovoltaic cell 11, and the photovoltaic cell 11 falls onto the dicing block 6. The photovoltaic cell 11 will split into two pieces along the central cutting line, realizing the rapid separation of the photovoltaic cell 11, which is beneficial to improving the efficiency of dicing the photovoltaic cell 11.In existing laser scribing devices, the cut edges of photovoltaic cells 11 are prone to thermal expansion during the scribing process. Because rapid heat dissipation is not possible at the cut edges, the cooling effect on the photovoltaic cells 11 is poor, affecting their quality. After scribing, two suction cups 20 release the photovoltaic cells 11, which fall onto the dicing block 6. The photovoltaic cells 11 split into two pieces along the central cut line. The two pieces slide down the slope of the dicing block 6 into the guide trough 5. The cut edges of the photovoltaic cells 11 are directly opposite the exhaust port 7. A fan 3 guides cold air into the air duct 4, and then the cold air exits through the air duct... 4. The material enters the cavity of the splitting block 6 and then exits through the exhaust holes 7 on both sides of the splitting block 6. The cold air blows and cools the cut area of the photovoltaic cell 11, achieving rapid heat dissipation at the cut area and preventing thermal expansion. Then, through the operation of two first electric telescopic rods, the two first electric telescopic rods drive two push plates 8 to move horizontally. The two push plates 8 push the two photovoltaic cells 11 horizontally and into the guide hopper 9, achieving rapid unloading of the two photovoltaic cells. This structure can quickly dissipate heat from the cut area of the photovoltaic cell 11, which is beneficial to improving the cooling effect of the photovoltaic cell 11 and improving its quality.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A photovoltaic cell laser scribing device, characterized in that: Includes a base (1), a control panel (2) mounted on the side wall of the base (1), a fan (3) mounted on the side wall of the base (1), a duct (4) mounted on the fan (3), a material guide groove (5) opened on the base (1), a shard block (6) placed on the inner wall of the material guide groove (5), a cavity provided inside the shard block (6), multiple exhaust holes (7) symmetrically opened on the side wall of the shard block (6), and the shard block (6) connected to the duct (4). The inner wall of the guide trough (5) is provided with two sets of plate grooves, and the plate grooves are equipped with push plates (8). The base (1) has two first electric telescopic rods inside, and the first electric telescopic rods are equipped with first push rods. The first push rods are connected to the push plates (8). The base (1) has two discharge ports. The side wall of the base (1) is equipped with guide hoppers (9) located at the discharge ports. The base (1) is placed on a placement platform (10), and photovoltaic cells (11) are placed on the placement platform (10).
2. The photovoltaic cell laser scribing device according to claim 1, characterized in that: A first guide assembly is mounted on the base (1) via a support frame. The first guide assembly includes a first guide plate (12). A first guide groove (13) is provided in the first guide plate (12). A first stepper motor (14) is mounted on the side wall of the first guide plate (12) via a base. A first lead screw (15) is mounted on the output shaft of the first stepper motor (14). The first lead screw (15) is rotatably mounted on the inner wall of the first guide groove (13). A first guide block (16) is assembled in the first guide groove (13). A first connecting block (17) is mounted on the first guide block (16).
3. The photovoltaic cell laser scribing device according to claim 2, characterized in that: A second electric telescopic rod (18) is installed on the first connecting block (17), a second push rod (19) is installed on the second electric telescopic rod (18), a fixing plate is installed on the bottom side of the second push rod (19), and two suction cups (20) are installed on the bottom side of the fixing plate. The suction cups (20) have cavities inside and multiple suction holes are opened on the bottom side of the suction cups (20).
4. The photovoltaic cell laser scribing device according to claim 2, characterized in that: A vacuum pump (21) is mounted on the first connecting block (17) via a base. The vacuum pump (21) is connected to a gas guide box (22) via a gas guide pipe. The gas guide box (22) is connected to two suction cups (20) via gas guide pipes.
5. The photovoltaic cell laser scribing device according to claim 4, characterized in that: An exhaust pipe (23) is installed on the air guide box (22), and a solenoid valve (24) is installed on the exhaust pipe (23).
6. The photovoltaic cell laser scribing device according to claim 2, characterized in that: A second guide assembly (25) is installed on the bottom side of the first connecting block (17). The second guide assembly (25) has the same structure as the first guide assembly. A fiber laser (26) is installed on the second connecting block inside the second guide assembly (25).