Laser-induced sintering equipment

Abstract

The utility model relates to the technical field of solar cell processing equipment, in particular to laser-induced sintering equipment which comprises a light-transmitting bearing part, a compensation light source, a voltage loading assembly and a laser. In the thickness direction of the light-transmitting bearing piece, the light-transmitting bearing piece is provided with a bearing face and an illuminated face which are arranged back to back, and the bearing face is configured to be attached to the illuminated face of the solar cell piece. The compensation light source is arranged opposite to the illuminated surface, and the compensation light source is configured to irradiate the illuminated surface of the solar cell piece through the light-transmitting bearing piece. The voltage loading assembly is arranged opposite to the bearing surface, and the voltage loading assembly is configured to be electrically connected with a metal grid line on the backlight surface of the solar cell piece. The laser is arranged opposite to the bearing surface, and the laser is configured to perform laser-induced sintering on the metal grid lines. According to the laser-induced sintering equipment, the laser-induced sintering effect can be improved, and the efficiency of solar cells is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of solar cell processing equipment, and in particular to a laser induced sintering equipment. Background Art

[0002] When current laser induced sintering equipment is used to process certain types of solar cells, such as back-contact solar cells, the sintering effect of the solar cells processed by the laser induced sintering equipment is poor, resulting in no significant efficiency improvement. Utility Model Content

[0003] The embodiment of the present application discloses a laser induced sintering device, which can improve the laser induced sintering effect and effectively improve the efficiency of solar cells.

[0004] In order to achieve the above-mentioned purpose, the embodiment of the present application discloses a laser induced sintering device, comprising:

[0005] A light-transmitting carrier, wherein in the thickness direction of the light-transmitting carrier, the light-transmitting carrier has a carrying surface and an illuminated surface that are disposed opposite to each other, and the carrying surface is configured to be attached to the light-receiving surface of the solar cell sheet;

[0006] A compensation light source, the compensation light source is arranged opposite to the illuminated surface, and the compensation light source is configured to illuminate the light-receiving surface of the solar cell sheet through the light-transmitting carrier;

[0007] A voltage loading component, the voltage loading component is arranged opposite to the bearing surface, and the voltage loading component is configured to electrically connect the metal grid line on the backlight surface of the solar cell sheet; and

[0008] A laser is disposed opposite to the bearing surface, and is configured to perform laser-induced sintering on the metal grid lines.

[0009] As an optional embodiment, the laser induced sintering equipment also includes a plurality of material moving mechanisms, which include a displacement drive device and a suction cup assembly, wherein the suction cup assembly is arranged corresponding to the supporting surface, and the suction cup assembly is configured to adsorb the solar cell sheet, and the suction cup assembly is driven and connected to the displacement drive device, and the displacement drive device is configured to drive the suction cup assembly to move.

[0010] As an optional embodiment, one of the material moving mechanisms is a loading mechanism, and the suction cup assembly includes a first loading suction cup, the first loading suction cup having a first film picking position and a first film placing position, the first loading suction cup located at the first film placing position is arranged opposite to the supporting surface, and the first loading suction cup located at the first film picking position is staggered with the supporting surface.

[0011] As an optional embodiment, the suction cup assembly further includes a second loading suction cup, the displacement drive device is a rotation drive device, the first loading suction cup and the second loading suction cup are both driven and connected to the rotation drive device, the rotation drive device is configured to drive the first loading suction cup and the second loading suction cup to swing synchronously, and the second loading suction cup is relatively fixed in position with the first loading suction cup;

[0012] The loading mechanism also includes a carrying component, which is configured to abut against the solar cell sheet to carry the solar cell sheet; when the first loading suction cup is located at the first sheet picking position, the first loading suction cup and the carrying component are arranged opposite to each other, and the second loading suction cup and the carrying component are staggered; when the first loading suction cup is located at the first sheet placing position, the second loading suction cup and the carrying component are arranged opposite to each other.

[0013] As an optional embodiment, the rotary drive device has an output shaft, the first loading suction cup is drivingly connected to the output shaft through a first swing arm, the second loading suction cup is drivingly connected to the output shaft through a second swing arm, the output shaft is configured to drive the first swing arm and the second swing arm to swing, and the first swing arm and the second swing arm are relatively fixed in position;

[0014] And / or, the rotation drive device is a motor;

[0015] And / or, the second loading suction cup is a first Bernoulli suction cup;

[0016] And / or, the supporting assembly includes a supporting bracket and a cylinder, the supporting bracket is configured to abut against the solar cell sheet to support the solar cell sheet, and is arranged opposite to the camera; the supporting bracket is driven and connected to the cylinder, and the cylinder is configured to drive the supporting bracket to move in a direction perpendicular to the supporting surface; when the first loading suction cup is located at the first film picking position, the first loading suction cup is arranged opposite to the supporting bracket; when the first loading suction cup is located at the first film placing position, the second loading suction cup is arranged opposite to the supporting bracket.

[0017] As an optional embodiment, the first loading suction cup includes:

[0018] A suction cup body, the suction cup body being drivingly connected to the rotation driving device;

[0019] A plurality of vacuum suction cups, each of which comprises a mounting rod and a suction nozzle disposed at the end of the mounting rod, and an end of each mounting rod away from the suction nozzle is mounted on the suction cup body; and

[0020] A plurality of elastic members, each of which is sleeved on the mounting rod, and two ends of each of which are respectively in contact with the suction nozzle and the suction cup body.

[0021] As an optional embodiment, one of the material moving mechanisms is a material unloading mechanism, the suction cup assembly includes a material unloading suction cup, the displacement drive device is a linear drive device, and the linear drive device is configured to drive the material unloading suction cup to displace in a direction parallel to the supporting surface, the material unloading suction cup has a second film picking position and a second film placing position, the material unloading suction cup at the second film picking position is opposite to the supporting surface, and the material unloading suction cup at the second film placing position is staggered with the supporting surface.

[0022] As an optional embodiment, the suction cup assembly further includes a connecting arm, the connecting arm includes a first extension section and a second extension section, the first extension section extends in a direction perpendicular to the bearing surface, and one end of the first extension section is drivingly connected to the linear drive device, the second extension section is fixedly connected to an end of the first extension section away from the linear drive device, the second extension section extends in a direction parallel to the bearing surface, and the unloading suction cup is arranged at an end of the second extension section away from the first extension section;

[0023] And / or, the linear drive device is an electric cylinder;

[0024] And / or, the material unloading suction cup is a second Bernoulli suction cup.

[0025] As an optional implementation, the laser induced sintering equipment further includes:

[0026] A displacement mechanism is arranged on the outside of the light-transmitting carrier in a direction parallel to the carrying surface, the light-transmitting carrier is driven and connected to the displacement mechanism, and the displacement mechanism is configured to drive the light-transmitting carrier to displace in a direction perpendicular to the carrying surface.

[0027] As an optional implementation, the voltage applying component is drivingly connected to the displacement mechanism, and the displacement mechanism is further configured to drive the voltage applying component to displace in a direction perpendicular to the bearing surface and in a direction parallel to the bearing surface.

[0028] As an optional implementation, the displacement mechanism includes a first mounting bracket, a first displacement assembly, a second displacement assembly, a second mounting bracket and a third displacement assembly;

[0029] The first displacement assembly and the second displacement assembly are arranged on the first mounting bracket; the light-transmitting bearing member is drivingly connected to the first displacement assembly, and the first displacement assembly is configured to drive the light-transmitting bearing member to displace in a direction perpendicular to the bearing surface;

[0030] The second mounting bracket is drivingly connected to the second displacement assembly, and the second displacement assembly is configured to drive the second mounting bracket to displace in a direction perpendicular to the bearing surface;

[0031] The third displacement assembly is disposed on the second mounting bracket, the voltage loading assembly is drivingly connected to the third displacement assembly, and the third displacement assembly is configured to drive the voltage loading assembly to displace in a direction parallel to the bearing surface.

[0032] As an optional implementation, the first displacement assembly includes a first motor, a first screw rod and a first nut, the first motor and the first screw rod are arranged on the first mounting bracket, the first motor is driven to connect the first screw rod, the first nut is threadedly connected to the first screw rod, and the light-transmitting bearing member is connected to the first nut;

[0033] The second displacement assembly includes a second motor, a second screw rod and a second nut, the second motor and the second screw rod are arranged on the first mounting bracket, the second screw rod and the first screw rod are arranged in parallel, the second motor is driven to connect the second screw rod, the second nut is threadedly connected to the second screw rod, and the second mounting bracket is connected to the second nut;

[0034] And / or, the third displacement assembly includes a third motor, a third screw rod and a third nut, the third motor and the third screw rod are arranged on the second mounting bracket, the third motor drives the third screw rod, the third nut is threadedly connected to the third screw rod, and the voltage loading assembly is connected to the third nut.

[0035] As an optional implementation, the light-transmitting carrier is provided with a plurality of air holes, and the air holes are exposed on the carrier surface; the air holes are configured to selectively connect the vacuum source and the air source;

[0036] And / or, the thickness direction of the light-transmitting bearing member is parallel to the vertical direction, the bearing surface is parallel to the horizontal plane, the bearing surface is located below the illuminated surface, the compensation light source is located below the illuminated surface, and the voltage loading component and the laser are both located above the bearing surface;

[0037] And / or, the light-transmitting carrier is a glass plate;

[0038] And / or, the voltage loading component is a probe row;

[0039] And / or, the compensating light source is a light box;

[0040] And / or, the laser is a laser galvanometer;

[0041] And / or, the solar cell sheet is a back-contact solar cell sheet.

[0042] Compared with the prior art, the beneficial effect of the present application is that the laser of the laser induced sintering equipment performs laser induced sintering on the metal grid lines on the backlight surface of the solar cell. In order to avoid the metal grid lines on the backlight surface being too dense and making it difficult for the laser to pass through the metal grid lines to generate sufficient carriers, the laser induced sintering equipment uses a compensation light source to illuminate the light-receiving surface of the solar cell through a light-transmitting carrier to make the solar cell generate more carriers. The voltage loading component electrically connects the metal grid lines on the backlight surface of the solar cell to apply voltage to the solar cell. Sufficient carriers are separated under the action of the voltage, sufficient heat is generated at the contact position of the metal grid lines, and contact contacts are formed after cooling, thereby improving the laser induced sintering effect and effectively improving the efficiency of the solar cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A schematic diagram of the structure of a laser induced sintering device disclosed in an embodiment of the present application;

[0045] Figure 2 for Figure 1 Schematic diagram of the bonding between the bearing surface and the light-receiving surface of the solar cell sheet;

[0046] Figure 3 for Figure 2 A partial enlarged view of area A shown in FIG;

[0047] Figure 4 It is a schematic diagram of the structure of the feeding mechanism and the light-transmitting bearing member disclosed in the embodiment of the present application;

[0048] Figure 5 It is a top view of the feeding mechanism and the light-transmitting bearing member disclosed in the embodiment of the present application (the first feeding suction cup is in the first film placing position);

[0049] Figure 6 for Figure 5 A schematic diagram of the first feeding suction cup being switched to the first sheet picking position;

[0050] Figure 7 It is a structural schematic diagram of the unloading mechanism and the light-transmitting bearing member disclosed in the embodiment of the present application (the unloading suction cup is in the second film placing position);

[0051] Figure 8 for Figure 7 Schematic diagram of the unloading suction cup being switched to the second sheet picking position;

[0052] Fig. 9 It is a schematic structural diagram of the displacement mechanism, the light-transmitting carrier and the voltage loading assembly disclosed in the embodiment of the present application.

[0053] Description of reference numerals:

[0054] 100, light-transmitting bearing member; 110, bearing surface; 120, illuminated surface; 130, air hole; 140, second connecting plate; 200, compensation light source; 300, voltage loading assembly; 310, first connecting plate; 400, laser; 500, solar cell sheet; 510, backlight surface; 520, light-receiving surface; 600, feeding mechanism; 610, first feeding suction cup; 611, suction cup body; 612, vacuum suction cup; 6121, mounting rod; 6122, suction nozzle; 613, elastic member; 620, second feeding suction cup; 630, rotation drive device; 631, output shaft; 640, bearing assembly; 641, bearing bracket; 642, cylinder; 650, first pendulum arm; 660, second swing arm; 700, unloading mechanism; 710, unloading suction cup; 720, linear drive device; 730, connecting arm; 731, first extension section; 732, second extension section; 800, displacement mechanism; 810, first mounting bracket; 820, first displacement assembly; 821, first motor; 822, first screw rod; 823, first nut; 830, second displacement assembly; 831, second motor; 832, second screw rod; 833, second nut; 840, second mounting bracket; 850, third displacement assembly; 851, third motor; 852, third screw rod; 853, third nut; 900a, loading station; 900b, unloading station. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0057] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0058] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0060] The sintering effect of the back-contact solar cell after being processed by the laser-induced sintering equipment is not good, resulting in no obvious improvement in efficiency. The inventors have found that when the laser-induced sintering equipment processes the metal grid lines of the back-contact solar cell, since the metal grid lines of the back-contact solar cell are all arranged on the backlight surface, the metal grid lines on the backlight surface are relatively dense, and only a small amount of laser light can avoid the shielding of the metal grid lines and reach the PN junction, which results in insufficient carriers generated by the laser. In the case of insufficient carriers, the heat generated by the carriers at the contact position of the metal grid lines and silicon is insufficient, which results in poor sintering effect.

[0061] Based on the above analysis, the laser of the laser induced sintering equipment performs laser induced sintering on the metal grid lines on the backlight surface of the solar cell. At the same time, the laser induced sintering equipment uses a compensation light source to irradiate the light-receiving surface of the solar cell through the light-transmitting carrier to make the solar cell generate more carriers. Sufficient carriers are separated under the action of voltage, generating sufficient heat at the contact position of the metal grid lines, and forming contact points after cooling, thereby improving the laser induced sintering effect and effectively improving the efficiency of the solar cell.

[0062] The technical solution of the utility model will be described below in conjunction with embodiments and drawings.

[0063] Reference Figures 1 to 3 The embodiment of the present application discloses a laser induced sintering device, including a light-transmitting carrier 100, a compensation light source 200, a voltage loading component 300 and a laser 400.

[0064] The thickness direction of the light-transmitting carrier 100 is as follows Figure 1 In the X-axis direction shown in FIG. 1 , in the thickness direction of the light-transmitting carrier 100, the light-transmitting carrier 100 has a carrier surface 110 and an illuminated surface 120 disposed opposite to each other, and the carrier surface 110 is configured to be attached to the light-receiving surface 520 of the solar cell sheet 500. Optionally, the solar cell sheet 500 is a back-contact solar cell sheet.

[0065] The compensation light source 200 is disposed opposite to the illuminated surface 120 , and is configured to illuminate the light receiving surface 520 of the solar cell sheet 500 through the light-transmitting carrier 100 .

[0066] The voltage loading component 300 is disposed opposite to the carrying surface 110, and the voltage loading component 300 is configured to be electrically connected to the metal grid lines on the backlight surface 510 of the solar cell sheet 500. The metal grid lines may be silver grid lines.

[0067] The laser 400 is disposed opposite to the carrying surface 110 , and the laser 400 is configured to perform laser induced sintering on the metal grid lines.

[0068] The laser 400 of the laser induced sintering equipment performs laser induced sintering on the metal grid lines on the backlight surface 510 of the solar cell panel 500. In order to prevent the metal grid lines on the backlight surface 510 from being too dense and making it difficult for the laser to pass through the metal grid lines to generate enough carriers, the laser induced sintering equipment uses a compensation light source 200 to irradiate the light receiving surface 520 of the solar cell panel 500 through the light-transmitting carrier 100 to make the solar cell panel 500 generate more carriers. The voltage loading component 300 is electrically connected to the metal grid lines on the backlight surface 510 of the solar cell panel 500 to apply voltage to the solar cell panel 500. Sufficient carriers are separated under the action of the voltage, sufficient heat is generated at the contact position of the metal grid lines, and contact contacts are formed after cooling, thereby improving the laser induced sintering effect and effectively improving the efficiency of the solar cell panel 500.

[0069] Preferably, the light-transmitting carrier 100 is a glass plate, which has the advantages of good light transmittance and good heat resistance. The voltage loading component 300 is a probe row, which includes a plurality of probes, each of which can contact each electrical connection point on the solar cell sheet 500. The probe row can also include a bracket, and a plurality of probes are arranged and installed on the bracket. The compensation light source 200 is a light box, which can protect the light-emitting element inside it. The light-emitting element in the light box can be a fluorescent light tube or an LED light-emitting device. The laser 400 is a laser galvanometer, which can emit a patterned laser to process the patterned metal grid line.

[0070] Further, refer back to Figure 1 , a plurality of air holes 130 are provided on the light-transmitting carrier 100, and the number of the air holes 130 may be one or more. When the number of the air holes 130 is multiple, the multiple air holes 130 may be arranged in a uniformly distributed manner. The air holes 130 are exposed on the carrier surface 110. The air holes 130 are configured to selectively connect the vacuum source and the gas source, and the vacuum source is, for example, a vacuum pump, and the gas source is, for example, an air pump or a high-pressure gas tank. When there are multiple air holes 130, the multiple air holes 130 can be collected to an interface through an air flow channel, and then the vacuum source and the gas source are connected through the interface. When the solar cell 500 needs to be adsorbed on the carrier surface 110, the air holes 130 are connected to the vacuum source, and the vacuum is drawn through the air holes 130 so that the solar cell 500 is adsorbed on the carrier surface 110. When the solar cell 500 needs to leave the carrier surface 110, the air holes 130 are connected to the gas source, and the gas source outputs gas to the air holes 130, so that the solar cell 500 is easier to separate from the carrier surface 110. The air hole 130 selectively connects the vacuum source and the air source and can be controlled by a valve. For example, the air hole 130 connects the vacuum source and the air source through two pipes respectively. The two pipes are respectively provided with valves, and the two valves respectively control the opening and closing of the two pipes.

[0071] Preferably, the vertical direction is Figure 1 In the Z-axis direction shown in FIG, the thickness direction of the light-transmitting carrier 100 is parallel to the vertical direction, the carrier surface 110 is parallel to the horizontal plane, and the horizontal direction is as shown in FIG. Figure 1 In other words, the solar cell sheet 500 is placed horizontally on the carrying surface 110, and the solar cell sheet 500 is placed on the carrying surface 110 by gravity. The carrying surface 110 is located below the illuminated surface 120, the compensation light source 200 is located below the illuminated surface 120, the voltage loading component 300 and the laser 400 are both located above the carrying surface 110, and the laser 400 irradiates downward, which is beneficial to improve the safety of the processing process.

[0072] In some embodiments, reference Figure 1 , the laser induced sintering equipment also includes a number of material moving mechanisms, which can be a loading mechanism 600 or an unloading mechanism 700. The material moving mechanism includes a displacement drive device and a suction cup assembly. The displacement drive device can be arranged on one side of the light-transmitting carrier 100, and the suction cup assembly is arranged corresponding to the bearing surface 110. The suction cup assembly is configured to adsorb the solar cell sheet 500. Preferably, the suction cup assembly adsorbs the backlight surface of the solar cell sheet 500. Compared with other material moving methods, the suction cup assembly can reduce damage to the solar cell sheet 500 and has a simpler structure. The suction cup assembly is driven by the displacement drive device, and the displacement drive device is configured to drive the displacement of the suction cup assembly, and then drive the displacement of the solar cell sheet 500 on the suction cup assembly to complete the loading or unloading process. The displacement direction of the suction cup assembly is, for example, a direction parallel to the bearing surface 110, and the direction parallel to the bearing surface 110 is such as Figure 1 The Y-axis direction shown in .

[0073] Optionally, refer to Figures 4 to 6 , one of the material transfer mechanisms is a loading mechanism 600, the suction cup assembly of the loading mechanism 600 includes a first loading suction cup 610, and the first loading suction cup 610 has a first film taking position and a first film placing position. Figure 5 The first loading suction cup 610 located at the first sheet placement position is arranged opposite to the carrying surface 110, and then the solar cell sheet 500 is transferred to the carrying surface 110. Figure 6 The first loading suction cup 610 located at the first film picking position is staggered with the carrying surface 110, thereby avoiding blocking the laser emitted by the laser 400 and avoiding blocking the voltage loading component 300 from moving.

[0074] Further, refer to Figures 4 to 6The suction cup assembly of the loading mechanism 600 also includes a second loading suction cup 620. The displacement driving device of the loading mechanism 600 is a rotation driving device 630. The first loading suction cup 610 and the second loading suction cup 620 are both driven and connected to the rotation driving device 630. The rotation driving device 630 is configured to drive the first loading suction cup 610 and the second loading suction cup 620 to swing synchronously. The positions of the second loading suction cup 620 and the first loading suction cup 610 are relatively fixed.

[0075] The loading mechanism 600 further includes a bearing assembly 640, which is configured to abut against the solar cell sheet 500 and bear the solar cell sheet 500; when the first loading suction cup 610 is located at the first sheet picking position, the first loading suction cup 610 and the bearing assembly 640 are arranged opposite to each other, and the second loading suction cup 620 and the bearing assembly 640 are arranged staggered. When the first loading suction cup 610 is located at the first sheet placing position, the second loading suction cup 620 and the bearing assembly 640 are arranged opposite to each other.

[0076] For more details, see Figure 6 When the first loading suction cup 610 switches to the first sheet picking position, the first loading suction cup 610 absorbs the solar cell sheet 500 on the supporting component 640. At the same time, the second loading suction cup 620 is staggered with the supporting component 640. The second loading suction cup 620 can correspond to the loading station 900a and absorb the solar cell sheet 500 on the loading station 900a.

[0077] Reference Figure 5 and Figure 6 , the first loading suction cup 610 switches to the first sheet placement position, the first loading suction cup 610 places the solar cell sheet 500 on the carrying surface 110, and at the same time, the second loading suction cup 620 places the solar cell sheet 500 on the carrying assembly 640. Then, the first loading suction cup 610 switches back to the first sheet taking position again, and the cycle repeats. In other words, the function of the second loading suction cup 620 is to transfer the solar cell sheet 500 from the loading station 900a to the carrying assembly 640, and the function of the first loading suction cup 610 is to transfer the solar cell sheet 500 from the carrying assembly 640 to the carrying surface 110. Through the cooperation of the first loading suction cup 610 and the second loading suction cup 620, the solar cell sheet 500 is efficiently transferred between the loading station 900a, the carrying assembly 640 and the carrying.

[0078] Specifically, refer back to Figure 4The rotary drive device 630 has an output shaft 631. The first loading suction cup 610 is connected to the output shaft 631 through the first swing arm 650. The second loading suction cup 620 is connected to the output shaft 631 through the second swing arm 660. The output shaft 631 is configured to drive the first swing arm 650 and the second swing arm 660 to swing. The first swing arm 650 and the second swing arm 660 are relatively fixed. The first loading suction cup 610 and the second loading suction cup 620 are driven to rotate synchronously by a rotary drive device 630 to reduce equipment costs.

[0079] Preferably, the rotation driving device 630 is a motor. Preferably, the second loading suction cup 620 is a first Bernoulli suction cup, which has a lower contact pressure and can avoid damaging the surface of the object.

[0080] Further, refer to Figure 4 The bearing assembly 640 includes a bearing bracket 641 and a cylinder 642. The bearing bracket 641 is configured to abut against the solar cell sheet 500 to carry the solar cell sheet 500, and is arranged opposite to the camera. When the solar cell sheet 500 is placed on the bearing bracket 641, the camera takes a picture of the solar cell sheet 500 to control the work of other parts. For example, the position of the solar cell sheet 500 placed on the light-transmitting bearing member 100 is determined based on the solar cell sheet 500 taken by the camera, and then the laser of the laser 400 is controlled to hit the corresponding position.

[0081] The supporting bracket 641 is driven to connect to the cylinder 642, and the cylinder 642 is configured to drive the supporting bracket 641 to move in a direction perpendicular to the supporting surface 110. Figure 4 When the first loading suction cup 610 is located at the first sheet picking position, the first loading suction cup 610 is arranged opposite to the supporting bracket 641. When the first loading suction cup 610 is located at the first sheet placing position, the second loading suction cup 620 is arranged opposite to the supporting bracket 641, and the cylinder 642 drives the supporting bracket 641 to approach the first loading suction cup 610, thereby transferring the solar cell 500 on the supporting bracket 641 to the first loading suction cup 610.

[0082] As an optional implementation, refer to Figure 4The first loading suction cup 610 includes a suction cup body 611, a plurality of vacuum suction cups 612 and a plurality of elastic members 613. The suction cup body 611 is driven to connect the rotation driving device 630. Each vacuum suction cup 612 includes a mounting rod 6121 and a suction nozzle 6122 arranged at the end of the mounting rod 6121, and one end of each mounting rod 6121 away from the suction nozzle 6122 is mounted on the suction cup body 611. Each elastic member 613 is sleeved on the mounting rod 6121, and the two ends of each elastic member 613 abut against the suction nozzle 6122 and the suction cup body 611 respectively. Preferably, the elastic member 613 is a spring. When the suction nozzle 6122 abuts against the solar cell 500 on the bearing bracket 641, or when the light-transmitting bearing member 100 abuts against the solar cell 500 on the suction nozzle 6122, the elastic member 613 plays an elastic buffering role, reduces rigid contact, and thereby reduces the probability of the solar cell 500 being crushed.

[0083] As an optional implementation, refer to Figure 7 and Figure 8 , one of the material moving mechanisms is a material unloading mechanism 700, the suction cup assembly of the material unloading mechanism 700 includes a material unloading suction cup 710, the displacement driving device of the material unloading mechanism 700 is a linear driving device 720, and the linear driving device 720 is configured to drive the material unloading suction cup 710 to move in a direction parallel to the bearing surface 110, and the material unloading suction cup 710 has a second film taking position and a second film placing position, and the material unloading suction cup 710 located at the second film taking position is opposite to the bearing surface 110 to absorb the solar cell 500 on the bearing surface 110, and the material unloading suction cup 710 located at the second film placing position is staggered with the bearing surface 110 to avoid blocking the laser emitted by the laser 400, and also to avoid hindering the displacement of the voltage loading component 300. Exemplarily, the material unloading suction cup 710 located at the second film placing position is opposite to the material unloading station 900b, so as to place the solar cell 500 on the material unloading station 900b.

[0084] Further, refer to Figure 7 and Figure 8 The suction cup assembly of the unloading mechanism 700 further includes a connecting arm 730, the connecting arm 730 includes a first extension section 731 and a second extension section 732, the first extension section 731 extends in a direction perpendicular to the bearing surface 110, and the direction perpendicular to the bearing surface 110 is as shown in FIG. Figure 7 and Figure 8 The Z-axis direction is shown in FIG. One end of the first extension section 731 is drivingly connected to the linear drive device 720, and the second extension section 732 is fixedly connected to the end of the first extension section 731 away from the linear drive device 720. The second extension section 732 extends in a direction parallel to the bearing surface 110. The direction parallel to the bearing surface 110 is as shown in FIG. Figure 7 and Figure 8In the Y-axis direction shown in . For example, the connecting arm 730 is an L-shaped connecting arm. The unloading suction cup 710 is arranged at one end of the second extension section 732 away from the first extension section 731. By setting the connecting arm 730, the linear drive device 720 can be staggered with the light-transmitting carrier 100 to facilitate the arrangement of components such as the voltage loading component 300 and the laser 400, and the structural layout is more reasonable.

[0085] Preferably, the linear drive device 720 is an electric cylinder, which has the advantages of precise position control and precise thrust control, and is conducive to the precise transportation of the solar cell panel 500.

[0086] Preferably, the unloading suction cup 710 is a second Bernoulli suction cup. The second Bernoulli suction cup has a lower contact pressure, which can avoid damage to the surface of the object.

[0087] In some embodiments, reference Fig. 9 The laser induced sintering device further includes a displacement mechanism 800. The displacement mechanism 800 is arranged on the outer side of the light-transmitting carrier 100 in a direction parallel to the carrier surface 110. The light-transmitting carrier 100 is connected to the displacement mechanism 800. The displacement mechanism 800 is configured to drive the light-transmitting carrier 100 to move in a direction perpendicular to the carrier surface 110. The direction perpendicular to the carrier surface 110 is as follows: Fig. 9 The Z-axis direction shown in .

[0088] In one embodiment, when the first loading suction cup 610 is switched to the first film placing position, the displacement mechanism 800 drives the transparent support member 100 to approach the first loading suction cup 610 to receive the solar cell 500 on the first loading suction cup 610. In another embodiment, when the unloading suction cup 710 is switched to the second film taking position, the displacement mechanism 800 drives the transparent support member 100 to approach the unloading suction cup 710 to deliver the solar cell 500 to the working area of ​​the unloading suction cup 710, so that the unloading suction cup 710 sucks up the solar cell 500 on the transparent support member 100.

[0089] Furthermore, the voltage loading component 300 drives the displacement mechanism 800, and the displacement mechanism 800 is further configured to drive the voltage loading component 300 to move in a direction perpendicular to the bearing surface 110 and in a direction parallel to the bearing surface 110. Fig. 9 The Y-axis direction shown in .

[0090] Before laser induced sintering, the displacement mechanism 800 drives the voltage loading component 300 to move to a position corresponding to the electrical connection point on the solar cell sheet 500, and then the voltage loading component 300 docks with the electrical connection point to achieve electrical connection with the solar cell sheet 500, thereby applying voltage to the solar cell sheet 500. Since the positions of the electrical connection points on different solar cell sheets 500 are different, the voltage loading component 300 can be displaced and different solar cell sheets 500 can be processed.

[0091] Furthermore, the displacement mechanism 800 includes a first mounting bracket 810 , a first displacement assembly 820 , a second displacement assembly 830 , a second mounting bracket 840 and a third displacement assembly 850 .

[0092] The first displacement assembly 820 and the second displacement assembly 830 are disposed on the first mounting bracket 810. The first displacement assembly 820 and the second displacement assembly 830 share a first mounting bracket 810 to make the structure more compact and further reduce the equipment cost. The light-transmitting bearing member 100 is driven to connect to the first displacement assembly 820. The first displacement assembly 820 is configured to drive the light-transmitting bearing member 100 to move in a direction perpendicular to the bearing surface 110.

[0093] The second mounting bracket 840 is drivingly connected to the second displacement assembly 830 , and the second displacement assembly 830 is configured to drive the second mounting bracket 840 to displace along a direction perpendicular to the bearing surface 110 .

[0094] The third displacement assembly 850 is disposed on the second mounting bracket 840 , and the voltage loading assembly 300 is driven to connect to the third displacement assembly 850 . The third displacement assembly 850 is configured to drive the voltage loading assembly 300 to displace in a direction parallel to the bearing surface 110 .

[0095] Optionally, the first displacement assembly 820 includes a first motor 821, a first screw rod 822 and a first nut 823. The first motor 821 and the first screw rod 822 are arranged on the first mounting bracket 810. The first motor 821 drives and connects the first screw rod 822. The first nut 823 is screwed to the first screw rod 822. The light-transmitting bearing member 100 is connected to the first nut 823. During the displacement of the light-transmitting bearing member 100, the first motor 821 drives the first screw rod 822 to rotate, and the first nut 823 moves on the first screw rod 822, thereby driving the light-transmitting bearing member 100 to displace in a direction perpendicular to the bearing surface 110.

[0096] Optionally, the second displacement assembly 830 includes a second motor 831, a second screw rod 832, and a second nut 833. The second motor 831 and the second screw rod 832 are arranged on the first mounting bracket 810. The second screw rod 832 and the first screw rod 822 are arranged in parallel. The second motor 831 drives and connects the second screw rod 832. The second nut 833 is screwed to the second screw rod 832. The second mounting bracket 840 is connected to the second nut 833. During the displacement of the second mounting bracket 840, the second motor 831 drives the second screw rod 832 to rotate, and the second nut 833 moves on the second screw rod 832, thereby driving the second mounting bracket 840 to displace in a direction perpendicular to the bearing surface 110.

[0097] The third displacement assembly 850 includes a third motor 851, a third screw rod 852 and a third nut 853. The third motor 851 and the third screw rod 852 are arranged on the second mounting bracket 840. The third motor 851 drives and connects the third screw rod 852. The third nut 853 is screwed to the third screw rod 852. The voltage loading assembly 300 is connected to the third nut 853. During the displacement process of the voltage loading assembly 300, the third motor 851 drives the third screw rod 852 to rotate, and the third nut 853 moves with the third screw rod 852, thereby driving the voltage loading assembly 300 to displace in a direction parallel to the bearing surface 110. The second mounting bracket 840 where the third displacement assembly 850 is located displaces in a direction perpendicular to the bearing surface 110. In other words, the voltage loading assembly 300 can be displaced in a direction perpendicular to the bearing surface 110 and in a direction parallel to the bearing surface 110, and can be docked with the electrical connection point after aligning with the electrical connection point of the solar cell sheet 500.

[0098] In addition to the above methods, the first displacement assembly 820 , the second displacement assembly 830 , and the third displacement assembly 850 may also be a gear rack assembly or a linear motor assembly.

[0099] Preferably, there are two displacement mechanisms 800, and both ends of the voltage loading assembly 300 are connected to the third nuts 853 in the two displacement mechanisms 800 through two first connection plates 310. Both side ends of the light-transmitting carrier 100 are connected to the first nuts 823 in the two displacement mechanisms 800 through two second connection plates 140. By providing two displacement mechanisms 800, the displacement of the voltage loading assembly 300 and the light-transmitting carrier 100 can be more balanced.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A laser induced sintering device, characterized in that: include: A light-transmitting carrier, wherein in the thickness direction of the light-transmitting carrier, the light-transmitting carrier has a carrying surface and an illuminated surface that are disposed opposite to each other, and the carrying surface is configured to be attached to the light-receiving surface of the solar cell sheet; A compensation light source, the compensation light source is arranged opposite to the illuminated surface, and the compensation light source is configured to illuminate the light-receiving surface of the solar cell sheet through the light-transmitting carrier; A voltage loading component, the voltage loading component is arranged opposite to the bearing surface, and the voltage loading component is configured to electrically connect the metal grid line on the backlight surface of the solar cell sheet; and A laser is disposed opposite to the bearing surface, and is configured to perform laser-induced sintering on the metal grid lines.

2. The laser induced sintering equipment according to claim 1, characterized in that: The laser induced sintering equipment also includes a plurality of material moving mechanisms, which include a displacement drive device and a suction cup assembly. The suction cup assembly is arranged corresponding to the supporting surface, and the suction cup assembly is configured to adsorb the solar cell sheet. The suction cup assembly is driven and connected to the displacement drive device, and the displacement drive device is configured to drive the suction cup assembly to move.

3. The laser induced sintering equipment according to claim 2, characterized in that: One of the material moving mechanisms is a loading mechanism, and the suction cup assembly includes a first loading suction cup, which has a first film picking position and a first film placing position. The first loading suction cup located at the first film placing position is arranged opposite to the supporting surface, and the first loading suction cup located at the first film picking position is staggered with the supporting surface.

4. The laser induced sintering equipment according to claim 3, characterized in that: The suction cup assembly also includes a second loading suction cup, the displacement drive device is a rotation drive device, the first loading suction cup and the second loading suction cup are both driven and connected to the rotation drive device, the rotation drive device is configured to drive the first loading suction cup and the second loading suction cup to swing synchronously, and the second loading suction cup is relatively fixed in position with the first loading suction cup; The loading mechanism further includes a bearing assembly, and the bearing assembly is configured to abut against the solar cell sheet to bear the solar cell sheet; When the first loading suction cup is located at the first film picking position, the first loading suction cup is arranged opposite to the supporting assembly, and the second loading suction cup is staggered with the supporting assembly; when the first loading suction cup is located at the first film placing position, the second loading suction cup is arranged opposite to the supporting assembly.

5. The laser induced sintering equipment according to claim 4, characterized in that: The rotary drive device has an output shaft, the first loading suction cup is drivingly connected to the output shaft through a first swing arm, the second loading suction cup is drivingly connected to the output shaft through a second swing arm, the output shaft is configured to drive the first swing arm and the second swing arm to swing, and the first swing arm and the second swing arm are relatively fixed in position; And / or, the rotation drive device is a motor; And / or, the second loading suction cup is a first Bernoulli suction cup; And / or, the supporting assembly includes a supporting bracket and a cylinder, the supporting bracket is configured to abut against the solar cell sheet to support the solar cell sheet, and is arranged opposite to the camera; the supporting bracket is driven and connected to the cylinder, and the cylinder is configured to drive the supporting bracket to move in a direction perpendicular to the supporting surface; when the first loading suction cup is located at the first film picking position, the first loading suction cup is arranged opposite to the supporting bracket; when the first loading suction cup is located at the first film placing position, the second loading suction cup is arranged opposite to the supporting bracket.

6. The laser induced sintering equipment according to claim 4, characterized in that: The first loading suction cup comprises: A suction cup body, the suction cup body being drivingly connected to the rotation driving device; A plurality of vacuum suction cups, each of which comprises a mounting rod and a suction nozzle disposed at the end of the mounting rod, and an end of each mounting rod away from the suction nozzle is mounted on the suction cup body; and A plurality of elastic members, each of which is sleeved on the mounting rod, and two ends of each of which are respectively in contact with the suction nozzle and the suction cup body.

7. The laser induced sintering equipment according to claim 2, characterized in that: One of the material moving mechanisms is a material unloading mechanism, the suction cup assembly includes a material unloading suction cup, the displacement drive device is a linear drive device, and the linear drive device is configured to drive the material unloading suction cup to displace in a direction parallel to the supporting surface. The material unloading suction cup has a second film picking position and a second film placing position. The material unloading suction cup at the second film picking position is opposite to the supporting surface, and the material unloading suction cup at the second film placing position is staggered with the supporting surface.

8. The laser induced sintering equipment according to claim 7, characterized in that: The suction cup assembly also includes a connecting arm, the connecting arm includes a first extension section and a second extension section, the first extension section extends in a direction perpendicular to the bearing surface, and one end of the first extension section is drivingly connected to the linear drive device, the second extension section is fixedly connected to an end of the first extension section away from the linear drive device, the second extension section extends in a direction parallel to the bearing surface, and the unloading suction cup is arranged at an end of the second extension section away from the first extension section; And / or, the linear drive device is an electric cylinder; And / or, the material unloading suction cup is a second Bernoulli suction cup.

9. The laser induced sintering device according to any one of claims 1 to 8, characterized in that: The laser induced sintering equipment also includes: A displacement mechanism is arranged on the outside of the light-transmitting carrier in a direction parallel to the carrying surface, the light-transmitting carrier is driven and connected to the displacement mechanism, and the displacement mechanism is configured to drive the light-transmitting carrier to displace in a direction perpendicular to the carrying surface.

10. The laser induced sintering equipment according to claim 9, characterized in that: The voltage applying component is drivingly connected to the displacement mechanism, and the displacement mechanism is further configured to drive the voltage applying component to displace in a direction perpendicular to the bearing surface and in a direction parallel to the bearing surface.

11. The laser induced sintering equipment according to claim 10, characterized in that: The displacement mechanism includes a first mounting bracket, a first displacement assembly, a second displacement assembly, a second mounting bracket and a third displacement assembly; The first displacement assembly and the second displacement assembly are arranged on the first mounting bracket; The light-transmitting bearing member is drivingly connected to the first displacement assembly, and the first displacement assembly is configured to drive the light-transmitting bearing member to displace along a direction perpendicular to the bearing surface; The second mounting bracket is drivingly connected to the second displacement assembly, and the second displacement assembly is configured to drive the second mounting bracket to displace in a direction perpendicular to the bearing surface; The third displacement assembly is disposed on the second mounting bracket, the voltage loading assembly is drivingly connected to the third displacement assembly, and the third displacement assembly is configured to drive the voltage loading assembly to displace in a direction parallel to the bearing surface.

12. The laser induced sintering equipment according to claim 11, characterized in that: The first displacement assembly includes a first motor, a first screw rod and a first nut, wherein the first motor and the first screw rod are arranged on the first mounting bracket, the first motor is driven to connect with the first screw rod, the first nut is threadedly connected with the first screw rod, and the light-transmitting bearing member is connected with the first nut; The second displacement assembly includes a second motor, a second screw rod and a second nut, the second motor and the second screw rod are arranged on the first mounting bracket, the second screw rod and the first screw rod are arranged in parallel, the second motor is driven to connect the second screw rod, the second nut is threadedly connected to the second screw rod, and the second mounting bracket is connected to the second nut; And / or, the third displacement assembly includes a third motor, a third screw rod and a third nut, the third motor and the third screw rod are arranged on the second mounting bracket, the third motor drives the third screw rod, the third nut is threadedly connected to the third screw rod, and the voltage loading assembly is connected to the third nut.

13. The laser induced sintering device according to any one of claims 1 to 8, characterized in that: The light-transmitting carrier is provided with a plurality of air holes, the air holes being exposed on the carrier surface; the air holes are configured to selectively connect a vacuum source and an air source; And / or, the thickness direction of the light-transmitting bearing member is parallel to the vertical direction, the bearing surface is parallel to the horizontal plane, the bearing surface is located below the illuminated surface, the compensation light source is located below the illuminated surface, and the voltage loading component and the laser are both located above the bearing surface; And / or, the light-transmitting carrier is a glass plate; And / or, the voltage loading component is a probe row; And / or, the compensating light source is a light box; And / or, the laser is a laser galvanometer; And / or, the solar cell sheet is a back-contact solar cell sheet.

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