CN213916628U

CN213916628U - Laser processing equipment

Info

Publication number: CN213916628U
Application number: CN202022467916.1U
Authority: CN
Inventors: 卫哲; 王佳辉; 黄海; 徐贵阳
Original assignee: Wuhan DR Llaser Technology Corp Ltd
Current assignee: Wuhan DR Llaser Technology Corp Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-08-10
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses a laser processing device, which comprises a conveying device, a heating module, a laser module and a cooling device, wherein the conveying channel of the conveying device is used for conveying solar battery pieces along the left and right directions, the heating module is arranged near the conveying device and is used for heating the solar battery pieces, the laser module is arranged above the conveying device and is used for emitting laser to irradiate the solar battery pieces preheated by the heating module, the cooling device is close to the tail end of the conveying channel of the conveying device and is used for cooling the solar battery pieces irradiated by the laser module, thus the assembly line type processing treatment of the solar battery pieces can be realized by the conveying device, wherein the heating module is used for preheating the solar battery pieces, the laser module is used for irradiating and processing the preheated solar battery pieces, the cooling device is used for cooling the solar battery pieces after laser processing, and finishing the processing of the solar cell after cooling.

Description

Laser processing equipment

Technical Field

The utility model belongs to the technical field of solar wafer processing equipment, concretely relates to laser processing equipment.

Background

In recent years, the photovoltaic industry is rapidly developed, the solar cell becomes the vitality of the photovoltaic industry, but the solar cell sheet has the light decay phenomenon. The solar cell can resist light decay by adopting the modes of annealing, charging or illumination and the like, the traditional annealing, charging and illumination needs long processing time, and the processing time can be greatly saved by adopting laser illumination to perform light decay resistance processing.

At present, when laser anti-light-decay treatment is carried out on solar cell laser processing equipment, a solar cell piece is generally transferred to a special processing platform through a transfer and transmission module, and the solar cell piece is transferred out through the transfer and transmission module after processing is finished.

The general battery piece conveying and processing mode comprises the following steps: the intermittent stepping conveying mode and the continuous belt conveying mode have the problem that the processing time is long, while the processing time of the continuous belt conveying mode can be shortened, a long production line is needed to be arranged for ensuring the laser irradiation light intensity and irradiation time, and ensuring the preheating effect before laser irradiation and the cooling effect after laser irradiation, and the equipment is huge.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the novel practical purpose aims to provide a laser processing device which is simple in structure and high in integration degree.

In order to achieve the above purpose, the technical solution of the present invention is as follows: the utility model provides a laser processing equipment, its characterized in that, includes conveying equipment, heating module, laser module and cooling arrangement, conveying equipment's transfer passage is used for carrying the solar wafer along left right direction, the heating module sets up near conveying equipment, it is used for right the solar wafer heats, the laser module sets up conveying equipment's top, it is used for transmitting laser irradiation warp the heating module preheats the back solar wafer, cooling arrangement is close to conveying equipment transfer passage's end, it is used for to the solar wafer after the laser module shines cools off.

The beneficial effects of the above technical scheme are that: therefore, the solar cell can be processed in a production line mode through the conveying equipment, the heating module is used for preheating the solar cell, the laser module is used for irradiating and processing the preheated solar cell, the cooling equipment is used for cooling the laser-processed solar cell, and the solar cell is processed after cooling.

In the technical scheme, the laser module comprises a plurality of laser emitting heads, the plurality of laser emitting heads are arranged above the conveying equipment, and laser beams emitted by the plurality of laser emitting heads irradiate on the solar cell piece, so that light spots are overlapped or distributed adjacently.

The beneficial effects of the above technical scheme are that: so can ensure through setting up a plurality of laser emission heads that the irradiation intensity and the irradiation time that solar wafer received can be satisfied, more preferred can also guarantee that solar wafer can be covered by laser light source when the transmission completely, so ensure that each position homoenergetic of solar wafer's upper surface can receive laser irradiation.

Still include the box that the level set up among the above-mentioned technical scheme, the left and right sides of box is equipped with the confession respectively conveying equipment transfer passage passes through's first opening, the heating module sets up in the box.

The beneficial effects of the above technical scheme are that: the heat loss of the heating module can be reduced by arranging the box body.

In the technical scheme, the number of the heating modules is two, the two heating modules are distributed in the box body at intervals from top to bottom, and the conveying channel of the conveying equipment passes through the space between the two heating modules.

The beneficial effects of the above technical scheme are that: therefore, the solar cell can be fully preheated, the upper surface and the lower surface are relatively uniformly heated, and the preheating speed is higher; and when the device is applied to an anti-light-decay process, rapid preheating can prevent the surface temperature of the solar cell from being sharply increased due to laser irradiation to damage the cell structure.

In the above technical scheme, the heating module comprises a plurality of infrared light tubes.

The beneficial effects of the above technical scheme are that: the infrared lamp tube has high heating efficiency and good preheating effect.

Still include among the above-mentioned technical scheme accuse temperature module, accuse temperature module sets up in the box, and be located heating module right-hand, and be located conveying equipment transfer passage's below, the laser module sets up in the box and be located accuse temperature module and conveying equipment transfer passage's top, or the box upper end corresponds the position department of accuse temperature module top is equipped with the second opening, just the laser module sets up outside the box, and be located the top of second opening part.

The beneficial effects of the above technical scheme are that: wherein, the temperature control module can make the temperature that corresponds the laser module below region in the box keep comparatively balanced relatively, prevents that solar wafer temperature fluctuation is too big, can improve the stability of the anti light decay technology effect.

In the technical scheme, the temperature control module comprises a heating sheet and/or a plurality of infrared lamp tubes.

In the technical scheme, the cooling device comprises air cooling equipment, the air cooling equipment is arranged above the tail end of the conveying channel of the conveying device, the air blowing port of the air cooling equipment faces downwards, and the air cooling equipment is used for blowing air to the solar cell on the conveying channel to cool.

The beneficial effects of the above technical scheme are that: therefore, the solar cell can be cooled by the airflow blown out by the air cooling equipment, and the cooling effect is good.

In the technical scheme, the cooling device comprises a water cooling device, the water cooling device is arranged at the tail end of the conveying device conveying channel and is used for cooling the solar cell pieces sent out by the conveying device.

The beneficial effects of the above technical scheme are that: therefore, the solar cell can be further cooled.

According to the technical scheme, the water cooling equipment comprises a belt conveyor and a water cooling plate, the belt conveyor is arranged on the right side of a conveying channel of the conveying equipment along the left-right direction, a feeding end of the belt conveyor is used for receiving solar cells sent out by the conveying equipment, the water cooling plate is arranged in a ring of a conveying belt of the belt conveyor, and a plurality of through holes are formed in the conveying belt of the belt conveyor; just be equipped with cooling channel in the water-cooling board, just cooling channel has water inlet and delivery port, water inlet on the water-cooling board is used for the delivery port intercommunication with coolant liquid supply apparatus, water-cooling board upper end still equipartition has a plurality of adsorption holes, and is a plurality of the other end in adsorption hole collects for the negative pressure interface, the negative pressure interface is used for the air inlet intercommunication with negative pressure equipment, and it is used for the negative pressure to adsorb the conveyer belt of belt conveyor and the solar wafer of the higher authority transport, and right the solar wafer cools off.

The beneficial effects of the above technical scheme are that: the adsorption holes are formed in the water cooling plate, so that the solar cell can be tightly attached to the conveying belt, and the conveying belt is closer to the water cooling plate, so that the solar cell is closer to the water cooling plate, and the cooling effect is better; in addition, to some unevenness can have the solar wafer of perk, can let solar wafer and conveyer belt area of contact bigger through the absorption hole, promote the cooling effect, its simple structure carries out heat transfer through the conveyer belt of belt conveyor to the realization is cooled down to the solar wafer.

Compared with the prior art, when the laser processing equipment provided by the utility model carries out the laser anti-light decay treatment of the solar cell, the processing efficiency of continuous processing can be ensured because a plurality of laser emitting heads are provided; meanwhile, the upper surface and the lower surface of the solar cell sheet can be preheated by the infrared lamp tube, so that the preheating effect is good and the preheating speed is high; meanwhile, the cooling equipment also comprises adsorption type water cooling equipment, so that the cooling speed is high and the cooling effect is good; the equipment ensures high processing speed and small size; it should be noted that the laser processing apparatus is also applicable to other laser processing scenarios.

Drawings

Fig. 1 is a schematic structural diagram of a laser processing apparatus according to embodiment 1 of the present invention;

fig. 2 is one of schematic structural diagrams of a laser processing apparatus according to embodiment 2 of the present invention;

fig. 3 is a second schematic structural view of a laser processing apparatus according to embodiment 2 of the present invention;

fig. 4 is a third schematic view of a laser processing apparatus according to embodiment 2 of the present invention;

FIG. 5 is a schematic view of the structure of the case according to embodiment 2 of the present invention;

fig. 6 is a schematic structural diagram of a laser processing apparatus according to embodiment 3 of the present invention;

fig. 7 is a schematic structural diagram of the water-cooling plate according to embodiment 3 of the present invention.

In the figure: the solar cell module comprises conveying equipment 1, a heating module 2, a laser module 3, a laser emitting head 31, cooling equipment 4, air cooling equipment 41, water cooling equipment 42, a belt conveyor 421, a water cooling plate 422, a 4221 cooling channel, a 4222 adsorption hole, a box body 5, a first opening 51, a second opening 52, an upper box body 53, a lower box body 54, a partition plate 55, a temperature control module 6 and a solar cell piece 7.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example 1

As shown in fig. 1, the embodiment provides a laser processing apparatus, which includes a conveying apparatus 1, a heating module 2, a laser module 3, and a cooling apparatus 4, wherein a conveying channel of the conveying apparatus 1 is used for conveying solar cells 7 along left and right directions, the heating module 2 is disposed near the conveying apparatus 1 and is used for heating the solar cells 7, the laser module 3 is disposed above the conveying apparatus 1 and is used for emitting laser to irradiate the solar cells 7 preheated by the heating module 2, the cooling apparatus 4 is close to the end of the conveying channel of the conveying apparatus 1 and is used for cooling the solar cells 7 irradiated by the laser module 3, so that the conveying apparatus can be used for realizing pipelined processing of the solar cells, wherein the heating module is used for preheating the solar cells, the laser module is used for irradiating and processing the preheated solar cell, the cooling equipment is used for cooling the laser-processed solar cell, and the solar cell is processed after cooling. Preferably, the conveying equipment is a chain net type conveyor, the chain net is a metal net, and the metal net can bear high temperature and laser irradiation, so that the solar cell is prevented from being polluted by the material of the conveying belt during high temperature and laser processing.

Wherein, it is preferred, laser module 3 includes a plurality of laser emission heads 31, and is a plurality of laser emission head 31 sets up conveying equipment 1's top, and be located heating module's right-hand side, and is a plurality of laser beam that laser emission head 31 sent shines facula coincidence and/or adjacent direction distribution when solar wafer 7 is last, can ensure through setting up a plurality of laser emission heads like this that the intensity of illumination and the irradiation time that solar wafer received can be satisfied, more preferably can also guarantee that solar wafer can be covered by laser source completely when transmitting, so ensure that each position of solar wafer's upper surface all can receive laser irradiation, more importantly can guarantee continuous processing's machining efficiency.

Preferably, the laser module 3 includes a laser emitting head 31, a laser shaping device, a focusing device, etc. arranged according to a laser irradiation sequence, and the laser emitting head 31 can select a continuous or pulse laser; the laser shaping device is used for shaping the laser beam into a required shape, such as a fiber laser homogenizer and the like; the focusing device is used for focusing the light beam and is completed by adopting a focusing lens. Specifically, after being collimated, the light beam of the laser emitting head 31 enters the laser shaping device to shape the light beam, and is focused by the focusing lens, so that the expected spot shape and size are obtained on the solar cell.

Example 2

The difference from embodiment 1 is that, as shown in fig. 2, it further includes a horizontally disposed box 5, the left and right sides of the box 5 are respectively provided with a first opening 51 for the conveying channel of the conveying equipment 1 to pass through, and the heating module 2 is disposed in the box 5, so that the heat dissipation of the heating module can be reduced by disposing the box.

Wherein, preferentially, heating module 2 is equipped with two, two heating module 2 is in interval distribution about in the box 5, just conveying equipment 1's transfer passage passes through two between the heating module 2, so make the abundant obtaining of solar wafer preheating, the upper and lower surface be heated comparatively balancedly relatively.

Wherein, it is further preferable that, as shown in fig. 5, the box body 5 includes an upper box body 53 and a lower box body 54, the upper box body 53 and the lower box body 54 are both in a trough shape, the upper box body 53 is located above the lower box body 54, the notches of the upper box body 53 and the lower box body 54 are close to each other, the left and right sides of the notch of the upper box body 53 and/or the lower box body 54 are both provided with a notch, and when the upper box body 53 and the lower box body 54 are both covered, the notches on the left and right sides are respectively enclosed to form the first opening 51, so that the opening or closing of the box body 5 is convenient, and the maintenance of the parts in the box body 5 can be facilitated, in addition, the conveying channel of the conveying device 1 can pass through the inside of the box body 5, it is further preferable that the front side or the rear side of the upper box body 53 and the lower box body 54 are rotatably connected, and the two can be rotated to be opened or closed under the external force, so make upper box 53 and lower box 54 rotate to be connected, but both inside electronic component electricity connection makes the integrated degree of whole equipment higher simultaneously. Wherein, two in the heating module 2 a heating module 2 sets up in last box 53, and another heating module 2 sets up in box 54 down, wherein, heating module 2 includes the infrared fluorescent tube that many intervals set up, and infrared fluorescent tube heating material rate is high, so make the abundant obtaining of solar wafer ability preheat, and preheat fastly more.

Wherein, it is preferred, as shown in fig. 3, still include among the above-mentioned technical scheme accuse temperature module 6, accuse temperature module 6 sets up in the box 5, and be located heating module 2 is right-hand, and is located conveying equipment 1 transfer passage's below, laser module 3 sets up in the box 5 and be located accuse temperature module 6 and conveying equipment 1 transfer passage's top, or as shown in fig. 4, box 5 upper end corresponds the position department above accuse temperature module 6 is equipped with second opening 52, just laser module 3 sets up outside the box 5, and be located the top of second opening 52 department, wherein, accuse temperature module 6 can be so that the regional temperature in the box below that corresponds laser module keeps comparatively balanced, prevents that solar wafer temperature from undulant too big, can improve the stability of light decay technology effect.

As shown in fig. 5, it is further preferable that partition plates 55 for dividing the inside of the upper box 53 and the lower box 54 into two chambers, i.e., a left chamber and a right chamber, are respectively disposed in the upper box 53 and the lower box 54 along the front-back direction, and when the upper box and the lower box are closed, an interval is formed at one end of the upper partition plate close to the lower partition plate, and the interval is aligned with the two first openings 51 (that is, the interval satisfies that a conveying passage of the conveying equipment passes between the two partition plates 55), wherein the heating module 2 is located in the left chamber, the temperature control module 6 is located in the right chamber, and at this time, the second opening 52 is located at a position corresponding to the right chamber at the upper end of the upper box.

Wherein, the temperature control module 6 comprises a heating sheet and/or a plurality of infrared lamp tubes.

Example 3

The difference between the embodiment 1 and the embodiment 2 is that, as shown in fig. 6, in the above technical solution, the cooling device 4 includes an air cooling device 41, the air cooling device 41 is above the end of the conveying channel of the conveying device 1, and an air blowing opening of the air cooling device faces downward, and is used for blowing air to the solar cell 7 on the conveying channel to cool the solar cell, so that the solar cell can be cooled by air flow blown by the air cooling device, and the cooling effect is good, wherein the air cooling device may be an air cooler (which belongs to the prior art and is not described herein again).

In the above technical solution, the cooling device 4 further includes a water cooling device 42, where the water cooling device 42 is disposed at the end of the conveying channel of the conveying device 1, and is used to cool the solar cell 7 sent out by the conveying device 1 again, so that the solar cell can be further cooled. Of course, the cooling device 4 may only include one of the air cooling device 41 and the water cooling device 42.

As shown in fig. 7, in the above technical solution, the water cooling device 42 includes a belt conveyor 421 and a water cooling plate 422, the belt conveyor 421 is disposed on the right side of the conveying channel of the conveying device 1 along the left-right direction, the feeding end of the belt conveyor 421 is used to receive the solar cell 7 sent out by the conveying device 1, the water cooling plate 422 is disposed in a ring of a conveying belt of the belt conveyor 421, and a plurality of through holes or full through holes are uniformly distributed on the conveying belt of the belt conveyor 421; just be equipped with cooling channel 4221 in the water-cooling board 422, just cooling channel 4221 has a water inlet and a delivery port, water inlet on the water-cooling board 422 is used for the delivery port intercommunication with coolant liquid supply apparatus, water-cooling board 422 upper end still equipartition has a plurality of adsorption holes 4222, and is a plurality of the other end of adsorption holes 4222 collects for the negative pressure interface, the negative pressure interface is used for the air inlet intercommunication with negative pressure equipment, and water-cooling board 422 is used for the negative pressure to adsorb the conveyer belt of belt conveyor 421 and the solar wafer of carrying above it, and right solar wafer 7 cools off, and its simple structure brings through belt conveyor's conveying and carries out the heat transfer to the realization is cooled down solar wafer. Preferably, a cavity is arranged below the cooling channel in the water cooling plate, and the plurality of adsorption holes and the negative pressure interface are communicated with the cavity, so that the lower ends of the plurality of adsorption holes can be collected. The adsorption holes arranged on the water cooling plate can enable the solar cell to be tightly attached to the conveying belt, so that the solar cell is closer to the cooling liquid, and the cooling effect is better; in addition, to some solar wafer that unevenness may have the perk, can let solar wafer and conveyer belt area of contact bigger through the adsorption hole, promote the cooling effect. When the solar cell cooling device works, the solar cell is tightly attached to the conveying belt under the adsorption effect when passing through the water cooling device 42, and is closer to cooling water to play a cooling effect.

In order to improve the automation degree of the whole device in the above embodiments, a feeding module and a discharging module may be further added, wherein the feeding module is configured to transfer a solar cell to be processed to the feeding end of the conveying device, and the discharging module is configured to transfer the cooled solar cell from the discharging end of the conveying device (embodiments 1 and 2) or the discharging end of the belt conveyor (embodiment 3), wherein the feeding module and the discharging module may respectively employ a negative pressure chuck manipulator with a downward adsorption surface, which is a prior art and is not described herein again.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a laser processing equipment, its characterized in that, includes conveying equipment (1), heating module (2), laser module (3) and cooling arrangement (4), the transfer passage of conveying equipment (1) is used for carrying solar wafer (7) along left right direction, heating module (2) set up near conveying equipment (1), it is used for right solar wafer (7) heat, laser module (3) set up the top of conveying equipment (1), it is used for the transmission laser beam to shine the warp heating module (2) preheat back solar wafer (7), cooling arrangement (4) are close to conveying equipment (1) transfer passage's end, it is used for to cool off solar wafer (7) after laser module (3) shine.

2. The laser processing apparatus according to claim 1, wherein the laser module (3) comprises a plurality of laser emitting heads (31), the plurality of laser emitting heads (31) are arranged above the conveying apparatus (1), and spots of laser beams emitted by the plurality of laser emitting heads (31) when the laser beams irradiate on the solar cell (7) are overlapped or adjacently distributed.

3. The laser processing equipment according to claim 1, further comprising a horizontally arranged box body (5), wherein the left side and the right side of the box body (5) are respectively provided with a first opening (51) for the conveying channel of the conveying equipment (1) to pass through, and the heating module (2) is arranged in the box body (5).

4. The laser processing apparatus according to claim 3, wherein two heating modules (2) are provided, two heating modules (2) are arranged in the box body (5) at intervals up and down, and a conveying channel of the conveying apparatus (1) passes between the two heating modules (2).

5. Laser processing apparatus according to claim 4, characterized in that the heating module (2) comprises a plurality of infrared light tubes.

6. The laser processing equipment according to any one of claims 3 to 5, further comprising a temperature control module (6), wherein the temperature control module (6) is arranged in the box body (5) and is positioned at the right side of the heating module (2) and is positioned below the conveying channel of the conveying equipment (1); laser module (3) set up and be located in box (5) accuse temperature module (6) and conveying equipment (1) transfer passage's top, or box (5) upper end corresponds the position department of accuse temperature module (6) top is equipped with second opening (52), just laser module (3) set up outside box (5), and be located the top of second opening (52) department.

7. Laser processing apparatus according to claim 6, characterized in that the temperature control module (6) comprises heating plates and/or a plurality of infrared lamps.

8. The laser processing apparatus according to claim 1, wherein the cooling apparatus (4) comprises an air cooling apparatus (41), the air cooling apparatus (41) is arranged above the end of the conveying channel of the conveying apparatus (1) with its air blowing port facing downwards, and is used for blowing air to the solar cell (7) on the conveying channel to cool.

9. The laser processing device according to claim 1 or 8, characterized in that the cooling device (4) comprises a water cooling device (42), and the water cooling device (42) is arranged at the end of the conveying channel of the conveying device (1) and used for cooling the solar cell (7) sent out by the conveying device (1).

10. The laser processing equipment according to claim 9, wherein the water cooling equipment (42) comprises a belt conveyor (421) and a water cooling plate (422), the belt conveyor (421) is arranged on the right side of a conveying channel of the conveying equipment (1) along the left-right direction, a feeding end of the belt conveyor (421) is used for receiving the solar cell sheets (7) sent out by the conveying equipment (1), the water cooling plate (422) is arranged in a ring of a conveying belt of the belt conveyor (421), and a plurality of through holes are arranged on the conveying belt of the belt conveyor (421); and a cooling channel (4221) is arranged in the water cooling plate (422), the cooling channel (4221) is provided with a water inlet and a water outlet, the water inlet in the water cooling plate (422) is communicated with the water outlet of a cooling liquid supply device, a plurality of adsorption holes (4222) are uniformly distributed at the upper end of the water cooling plate (422), the other ends of the adsorption holes (4222) are collected to form a negative pressure interface, the negative pressure interface is communicated with an air inlet of a negative pressure device and used for adsorbing the conveying belt of the belt conveyor (421) and the solar cells conveyed on the conveying belt in a negative pressure mode so as to cool the solar cells (7).