Solar cell edge covering and glue supplying device and solar cell preparation system

Abstract

The utility model relates to a solar cell edge covering and glue supplying device and a solar cell preparation system. The solar cell edge covering and glue supplying device comprises a first glue pipe, a second glue pipe, a flow meter, glue supplying equipment and a glue receiving disc located below edge covering equipment. The glue receiving disc is provided with a containing cavity, and the containing cavity is used for containing the edge covering glue leaked from the edge covering equipment; an anti-adhesion layer is arranged on the inner wall of the containing cavity, the bottom wall of the containing cavity is a curved surface, and a first through hole communicated with the containing cavity is formed in the glue receiving disc; the first end of the first glue pipe is connected with the glue receiving disc through the first through hole, and the second end of the first glue pipe is connected with glue supply equipment; the flow meter is arranged on the first glue pipe and is used for detecting the flow of glue flowing from the glue receiving disc to the glue supply equipment; and the second rubber pipe is connected between the rubber supply equipment and the edge covering equipment so as to convey the edge covering rubber in the rubber supply equipment to the edge covering equipment. According to the solar cell edge covering and glue supplying device, real-time monitoring on the glue leakage condition is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar cells, in particular to a solar cell edge covering glue supply device and a solar cell preparation system. BACKGROUND

[0002] The role of the edge covering process in the THL (heterojunction copper interconnection technology) process is to chamfer the cell piece and cover the periphery with phenolic resin. When the edge covering glue is blocked by foreign matter, the reflow speed will be less than the glue supply speed, and eventually the edge covering glue will continue to overflow. The existing edge covering device has a glue receiving disc under the edge covering wheel to receive the overflowed edge covering glue from the edge covering wheel. When the glue returning speed is slower than the glue supply speed, if no one checks the glue leakage situation and handles the glue leakage for a long time, the edge covering glue will continue to leak, and even overflow the glue receiving disc, causing the platform guide rail and grating ruler to be contaminated by glue. When the torque of the platform is too large due to the glue, the servo motor is prone to be damaged. The existing edge covering glue supply device does not have a glue leakage detection device, and unless manually checked, the specific situation of glue leakage cannot be known, and real-time monitoring of the glue leakage situation cannot be achieved. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a solar cell edge covering glue supply device and a solar cell preparation system to solve the technical problem that real-time monitoring of glue leakage cannot be achieved in the prior art.

[0004] In a first aspect, the present application provides a solar cell edge covering glue supply device, comprising a first glue pipe, a second glue pipe, a flow meter, a glue supply device, and a glue receiving disc located below an edge covering device;

[0005] The glue receiving disc has a containing cavity for containing the edge covering glue leaked from the edge covering device. An inner wall of the containing cavity is provided with an anti-adhesion layer, and a bottom wall of the containing cavity is a curved surface. The glue receiving disc is provided with a first through hole in communication with the containing cavity.

[0006] A first end of the first glue pipe is connected with the glue receiving disc through the first through hole, and a second end of the first glue pipe is connected with the glue supply device.

[0007] The flow meter is arranged on the first glue pipe to detect the glue flow rate from the glue receiving disc to the glue supply device.

[0008] The second glue pipe is connected between the glue supply device and the edge covering device to transmit the edge covering glue in the glue supply device to the edge covering device.

[0009] Optionally, the glue receiving plate comprises two side portions arranged opposite in a first direction and a bottom portion connecting the two side portions, the first through hole is arranged on one of the side portions, and the thickness of the bottom portion gradually increases from the middle to both sides in a second direction perpendicular to the first direction.

[0010] Optionally, the anti-adhesion layer is formed by coating a polytetrafluoroethylene material.

[0011] Optionally, the solar cell edge sealing glue supply device further comprises a fixing block arranged on the side portion of the glue receiving plate having the first through hole, the fixing block is provided with a second through hole, the second through hole and the first through hole are in communication to form a glue channel, and the glue receiving plate is in communication with the first end of the first glue pipe through the first through hole, the second through hole and the first glue pipe.

[0012] Optionally, the solar cell edge sealing glue supply device further comprises an adapter, and the fixing block and the first glue pipe are connected through the adapter.

[0013] Optionally, the solar cell edge sealing glue supply device further comprises a screen mesh arranged corresponding to the first through hole.

[0014] Optionally, the bottom wall of the accommodating cavity is a cylindrical surface.

[0015] Optionally, the solar cell edge sealing glue supply device further comprises a third glue pipe, a fourth glue pipe and a peristaltic pump, the first end of the third glue pipe is used for receiving the edge sealing glue flowing back from the edge sealing device, the second end of the third glue pipe is connected with the peristaltic pump, the peristaltic pump is further connected with the first end of the fourth glue pipe, and the second end of the fourth glue pipe is connected with the glue supply device.

[0016] Optionally, the diameters of the first glue pipe, the second glue pipe, the third glue pipe and the fourth glue pipe are the same.

[0017] In a second aspect, the application provides a solar cell preparation system comprising the solar cell edge sealing glue supply device according to any one of the above technical solutions.

[0018] The solar cell edge covering glue supply device and the solar cell preparation system, comprising a first glue pipe, a second glue pipe, a flow meter, a glue supply device and a glue receiving disc below the edge covering device; the glue receiving disc has a containing cavity for containing the edge covering glue leaked from the edge covering device; the inner wall of the containing cavity is provided with an anti-adhesion layer, the bottom wall of the containing cavity is a curved surface, and the glue receiving disc is provided with a first through hole in communication with the containing cavity; the first end of the first glue pipe is connected with the glue receiving disc through the first through hole, and the second end of the first glue pipe is connected with the glue supply device; the flow meter is arranged on the first glue pipe to detect the glue flow from the glue receiving disc to the glue supply device; the second glue pipe is connected between the glue supply device and the edge covering device to transmit the edge covering glue in the glue supply device to the edge covering device; in this way, when glue leakage occurs, the edge covering glue will drip into the containing cavity of the glue receiving disc, and due to the anti-adhesion layer on the inner wall of the containing cavity and the curved surface of the bottom wall of the containing cavity, the edge covering glue will flow to the first through hole and slide into the first glue pipe through the first through hole, and the flow meter arranged on the first glue pipe will measure the liquid flowing through the first glue pipe, thereby issuing a prompt signal, and real-time monitoring of glue leakage can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure schematic diagram of the solar cell edge covering glue supply device provided by the embodiment of the application is shown.

[0020] Figure 2 The structure schematic diagram of the glue receiving disc provided by the embodiment of the application is shown.

[0021] The meanings of the reference numbers in the drawings are as follows:

[0022] 1-first glue pipe; 2-second glue pipe; 3-flow meter; 4-glue supply device; 5-glue receiving disc; 6-side part; 7-bottom part; 8-fixing block; 9-adaptor; 10-sieve; 11-third glue pipe; 12-fourth glue pipe; 13-peristaltic pump; 14-edge covering device; 15-second through hole. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. Where, when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can also be present.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0026] Figure 1 is a structural schematic diagram of a solar cell edge covering glue supply device according to an embodiment of the application. It should be noted that the solar cell edge covering glue supply device according to the application is not limited to the structure shown in Figure 1 , and as shown in Figure 1 , the solar cell edge covering glue supply device comprises a first glue pipe 1, a second glue pipe 2, a flow meter 3, a glue supply device 4, and a glue receiving disc 5 located below an edge covering device 14;

[0027] The glue receiving disc 5 has a containing cavity for containing the edge covering glue leaked from the edge covering device 14; the inner wall of the containing cavity is provided with an anti-adhesion layer, and the bottom wall of the containing cavity is curved; the glue receiving disc 5 is provided with a first through hole in communication with the containing cavity;

[0028] The first end of the first glue pipe 1 is connected with the glue receiving disc 5 through the first through hole, and the second end of the first glue pipe 1 is connected with the glue supply device 4;

[0029] The flow meter 3 is arranged on the first glue pipe 1 to detect the glue flow from the glue receiving disc 5 to the glue supply device 4;

[0030] The second glue pipe 2 is connected between the glue supply device 4 and the edge covering device 14 to transmit the edge covering glue in the glue supply device 4 to the edge covering device 14.

[0031] The solar cell edge covering glue supply device according to the embodiment of the application can realize real-time monitoring of the glue leakage when the glue leakage occurs, because the edge covering glue will drip into the containing cavity of the glue receiving disc 5, flow to the first through hole, and slide into the first glue pipe 1 through the first through hole, and the flow meter 3 arranged on the first glue pipe 1 can measure the liquid flowing through the first glue pipe 1 to send a prompt signal.

[0032] It should be noted that the arrow in Figure 1 indicates the flow direction of the edge covering glue.

[0033] As an example, the flow meter 3 can be a clamp-type flow sensor, such as the Keyence FD-X flow meter 3, which uses a clamp-type installation, requires no pipe cutting, and can be directly measured outside the first hose 1 without interfering with the fluid inside the pipe. The second end of the first hose 1 is connected to the glue supply device 4, which can be a glue supply cabinet, which may include a receiving cavity to hold the edge-sealing glue. The glue supply device 4 has a reserved interface for connecting to the second end of the first hose 1.

[0034] In some embodiments, the adhesive receiving tray 5 includes two side portions 6 disposed opposite each other in a first direction and a bottom 7 connecting the two side portions 6, the first through hole being disposed on one of the side portions 6, and the thickness of the bottom 7 gradually increasing from the middle to both sides in a second direction, the second direction being perpendicular to the first direction.

[0035] In one specific embodiment, the structural schematic diagram of the above-mentioned adhesive receiving tray 5 is as follows: Figure 2 As shown, the adhesive receiving tray 5 includes two side portions 6 arranged opposite each other in a first direction and a bottom portion 7 connecting the two side portions 6. The bottom wall of the adhesive receiving tray 5 is curved. Specifically, the thickness of the bottom portion 7 gradually increases from the middle to both sides in the second direction.

[0036] In this embodiment, the glue receiving tray 5 includes two side portions 6 arranged opposite each other in a first direction and a bottom 7 connecting the two side portions 6. A first through hole is provided on one of the side portions 6. The thickness of the bottom 7 gradually increases from the middle to both sides in a second direction. The second direction is perpendicular to the first direction, which facilitates the collection of leaked glue and allows the leaked glue to be easily collected into the first through hole and the first glue tube 1, thereby enabling timely monitoring of glue leakage.

[0037] In some embodiments, the bottom wall of the receiving cavity is cylindrical.

[0038] In this embodiment, by making the bottom wall of the receiving cavity cylindrical, it is convenient to collect the leaked glue and to collect the leaked glue into the first through hole and the first glue tube 1, thereby realizing timely monitoring of the leaked glue.

[0039] In some embodiments, the anti-adhesion layer is formed by coating with polytetrafluoroethylene material.

[0040] In one specific embodiment, the anti-adhesion layer can be formed by coating with polytetrafluoroethylene (PTFE) material or by coating with other anti-adhesion materials. PTFE material, also known as Teflon, is a high molecular polymer obtained by polymerization of tetrafluoroethylene as a monomer. It has an extremely low coefficient of friction and strong anti-adhesion properties.

[0041] In some embodiments, the solar cell edge sealing glue supply device further comprises a fixing block 8, the fixing block 8 is arranged on the side 6 of the glue receiving disc 5 with the first through hole, the fixing block 8 is provided with a second through hole 15, the second through hole 15 is communicated with the first through hole to form a glue passing channel, and the glue receiving disc 5 is communicated with the first end of the first glue pipe 1 through the first through hole and the second through hole 15.

[0042] In the embodiments, the fixing block 8 is arranged on the side 6 of the glue receiving disc 5 with the first through hole, the fixing block 8 is provided with the second through hole 15, the second through hole 15 is communicated with the first through hole to form the glue passing channel, and the glue receiving disc 5 is communicated with the first end of the first glue pipe 1 through the first through hole and the second through hole 15, so that the first glue pipe 1 is fixed, and the glue overflow is conveniently flowed into the first glue pipe 1.

[0043] In one specific embodiment, the fixing block 8 is arranged on the side 6 of the glue receiving disc 5 with the first through hole, and specifically can be located at the center position of the side 6, because the center position of the side 6 corresponds to a smaller thickness of the bottom 7, so that the first through hole can conveniently collect the edge sealing glue. As an example, a fixing block 8 with a width of 20 cm and a thickness of 6 cm can be welded at the center position of the side 6 of the glue receiving disc 5 with the first through hole, and a 2 mm chamfer can be formed at the connection between the fixing block 8 and the glue receiving disc 5, so as to better fix the fixing block 8 on the glue receiving disc 5.

[0044] In some embodiments, the solar cell edge sealing glue supply device further comprises an adapter 9, and the fixing block 8 and the first glue pipe 1 are connected through the adapter 9.

[0045] In the embodiments, the fixing block 8 and the first glue pipe 1 are connected through the adapter 9, so that the fixing block 8 is connected with the first glue pipe 1, and the glue overflow is conveniently flowed into the first glue pipe 1.

[0046] In one specific embodiment, the second through hole 15 has an internal thread, the second through hole 15 can be an M6 straight thread hole, the first end of the adapter 9 has an external thread matched with the internal thread, the first end of the adapter 9 is connected in the second through hole 15, the first end of the first glue pipe 1 is inserted into the second end of the adapter 9, the adapter 9 also has a containing space, and the edge sealing glue falling in the glue receiving disc 5 can flow into the first glue pipe 1 through the first through hole and the adapter 9. As an example, the flow meter 3 can be arranged on the first glue pipe 1 at a position with a preset length (for example, 3 cm) from the adapter 9.

[0047] In some embodiments, the solar cell edge sealing glue supply device further comprises a screen 10 arranged corresponding to the first through hole.

[0048] As an example, the screen 10 can be a 300-mesh 8cm*10cm screen, which can be fixed in the corresponding position of the first through hole of the glue receiving tray 5 by glue, and is used to filter impurities in the edge coating glue.

[0049] In some embodiments, the solar cell edge coating glue supply device further comprises a third glue pipe 11, a fourth glue pipe 12 and a peristaltic pump 13, the first end of the third glue pipe 11 is used to receive the edge coating glue flowing back from the edge coating device 14, the second end of the third glue pipe 11 is connected with the peristaltic pump 13, the peristaltic pump 13 is further connected with the first end of the fourth glue pipe 12, and the second end of the fourth glue pipe 12 is connected with the glue supply device 4.

[0050] In a specific embodiment, the edge coating glue flowing back from the edge coating device 14 can be received by the third glue pipe 11, the fourth glue pipe 12 and the peristaltic pump 13, and then the flowing back edge coating glue is sent to the glue supply device 4.

[0051] In the embodiment, the third glue pipe 11, the fourth glue pipe 12 and the peristaltic pump 13 are arranged, the first end of the third glue pipe 11 receives the edge coating glue flowing back from the edge coating device 14, the second end of the third glue pipe 11 is connected with the peristaltic pump 13, the peristaltic pump 13 is further connected with the first end of the fourth glue pipe 12, and the second end of the fourth glue pipe 12 is connected with the glue supply device 4, so as to facilitate receiving the edge coating glue flowing back from the edge coating device 14, and then sending the flowing back edge coating glue to the glue supply device 4, thereby avoiding the waste of the edge coating glue.

[0052] In some embodiments, the diameters of the first glue pipe 1, the second glue pipe 2, the third glue pipe 11 and the fourth glue pipe 12 are the same.

[0053] In a specific embodiment, the diameters of the first glue pipe 1, the second glue pipe 2, the third glue pipe 11 and the fourth glue pipe 12 are the same, and the diameter here can refer to the outer diameter and / or the inner diameter, for example, the outer diameter or the inner diameter is 6cm.

[0054] In a specific embodiment, when glue leakage occurs, the edge coating glue will drop on the inner wall of the containing cavity of the glue receiving tray 5, and since the inner wall of the containing cavity is provided with an anti-adhesion layer, the edge coating glue will slide into the first glue pipe 1 through the first through hole. The flow meter 3 measures that there is liquid flowing through the first glue pipe 1, and can send a prompt signal (such as a PLC signal) to prompt that glue leakage is detected. If the flow of the edge coating glue measured by the flow meter 3 is greater than or equal to a preset flow value (for example, 3ml / min) and lasts for a preset time (for example, 15s), an alarm signal can be sent to alert the on-site personnel to handle, for example, to stop glue supply, to speed up the glue returning speed of the peristaltic pump 13, and to make the solar cell edge coating glue supply device pause. After the handling is completed, the reset can be clicked on the human-machine interface, and the flow meter 3 can be monitored again.

[0055] The existing glue receiving tray has a size of 28*30*8cm, a wall thickness of 0.5cm, and can accommodate 6.2L of glue. When the glue supply speed is 3L / h, the edge sealing glue will overflow to the machine table after more than 2 hours, and the guide rail will be attached with the edge sealing glue after another half hour. If the glue leakage is found in time, a lot of loss can be avoided.

[0056] The solar cell edge sealing glue supply device provided by the embodiment of the application comprises a first glue pipe 1, a second glue pipe 2, a flow meter 3, a glue supply device 4 and a glue receiving tray 5 located below an edge sealing device 14. The glue receiving tray 5 has an accommodating cavity for accommodating the edge sealing glue leaked from the edge sealing device 14. An inner wall of the accommodating cavity is provided with an anti-adhesion layer, and a bottom wall of the accommodating cavity is curved. The glue receiving tray 5 is provided with a first through hole in communication with the accommodating cavity. A first end of the first glue pipe 1 is connected with the glue receiving tray 5 through the first through hole, and a second end of the first glue pipe 1 is connected with the glue supply device 4. The flow meter 3 is arranged on the first glue pipe 1 to detect the glue flow from the glue receiving tray 5 to the glue supply device 4. The second glue pipe 2 is connected between the glue supply device 4 and the edge sealing device 14 to transmit the edge sealing glue in the glue supply device 4 to the edge sealing device 14. When glue leakage occurs, the edge sealing glue will drip into the accommodating cavity of the glue receiving tray 5. Since the inner wall of the accommodating cavity is provided with the anti-adhesion layer and the bottom wall of the accommodating cavity is curved, the edge sealing glue will flow to the first through hole and slide into the first glue pipe 1 through the first through hole. The flow meter 3 arranged on the first glue pipe 1 can measure the liquid flowing through the first glue pipe 1, thereby sending a prompt signal to realize real-time monitoring of the glue leakage. The solar cell edge sealing glue supply device provided by the embodiment of the application has a simple structure and can realize mastering of the glue leakage condition. The abnormality in production can be promptly prompted according to the fluid flow size, and the device has a small volume and can cope with recycling of different fluids in many industrial and commercial scenes. The device is easy and fast to install.

[0057] The solar cell edge sealing glue supply device provided by the embodiment of the application comprises a first glue pipe 1, a second glue pipe 2, a flow meter 3, a glue supply device 4 and a glue receiving tray 5 located below an edge sealing device 14. The glue receiving tray 5 has an accommodating cavity for accommodating the edge sealing glue leaked from the edge sealing device 14. An inner wall of the accommodating cavity is provided with an anti-adhesion layer, and a bottom wall of the accommodating cavity is curved. The glue receiving tray 5 is provided with a first through hole in communication with the accommodating cavity. A first end of the first glue pipe 1 is connected with the glue receiving tray 5 through the first through hole, and a second end of the first glue pipe 1 is connected with the glue supply device 4. The flow meter 3 is arranged on the first glue pipe 1 to detect the glue flow from the glue receiving tray 5 to the glue supply device 4. The second glue pipe 2 is connected between the glue supply device 4 and the edge sealing device 14 to transmit the edge sealing glue in the glue supply device 4 to the edge sealing device 14. When glue leakage occurs, the edge sealing glue will drip into the accommodating cavity of the glue receiving tray 5. Since the inner wall of the accommodating cavity is provided with the anti-adhesion layer and the bottom wall of the accommodating cavity is curved, the edge sealing glue will flow to the first through hole and slide into the first glue pipe 1 through the first through hole. The flow meter 3 arranged on the first glue pipe 1 can measure the liquid flowing through the first glue pipe 1, thereby sending a prompt signal to realize real-time monitoring of the glue leakage. The solar cell edge sealing glue supply device provided by the embodiment of the application has a simple structure and can realize mastering of the glue leakage condition. The abnormality in production can be promptly prompted according to the fluid flow size, and the device has a small volume and can cope with recycling of different fluids in many industrial and commercial scenes. The device is easy and fast to install.

[0058] The above technical features of the embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the description.

[0059] The above embodiments only express the preferred embodiments of the present application, which are described in a more specific and detailed manner, but should not be construed as limiting the scope of the patent application. It should be noted that for ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A solar cell edge-wrapping adhesive supply device, characterized in that, The first rubber tube, the second rubber tube, the flow meter, the rubber supplying device and the glue receiving tray are arranged in sequence. The glue receiving tray has a containing cavity for containing the edge coating glue leaked from the edge coating device. The first end of the first rubber tube is connected with the glue receiving tray through the first through hole. The flow meter is arranged on the first rubber tube to detect the glue flow from the glue receiving tray to the rubber supplying device. The second rubber tube is connected between the rubber supplying device and the edge coating device to transmit the edge coating glue in the rubber supplying device to the edge coating device.

2. The solar cell edge coating apparatus according to claim 1, wherein The glue receiving tray includes two side portions arranged oppositely in a first direction and a bottom portion connecting the two side portions.

3. The solar cell edge bead application apparatus of claim 1, wherein The thickness of the bottom portion gradually increases from the middle to both sides in a second direction perpendicular to the first direction.

4. The solar cell edge coating apparatus according to claim 2, wherein The anti-adhesion layer is formed by coating polytetrafluoroethylene material.

5. The solar cell edging apparatus of claim 4, wherein The solar cell edge coating rubber supplying device further includes a fixing block arranged on the side portion of the glue receiving tray having the first through hole.

6. The solar cell edging apparatus of claim 4, wherein The solar cell edge coating rubber supplying device further includes an adapter.

7. The solar cell edging apparatus of claim 1, wherein The solar cell edge coating rubber supplying device further includes a screen mesh arranged corresponding to the first through hole.

8. The solar cell edging apparatus of claim 1, wherein The bottom wall of the containing cavity is a cylindrical surface.

9. The solar cell edging apparatus of claim 8, wherein The solar cell edge coating rubber supplying device further includes a third rubber tube, a fourth rubber tube and a peristaltic pump.

10. A solar cell production system characterized by comprising: a substrate cleaning device; a substrate drying device; a substrate coating device; a substrate annealing device; and a substrate inspection device. The diameters of the first rubber tube, the second rubber tube, the third rubber tube and the fourth rubber tube are the same. The solar cell edge coating rubber supplying device as claimed in any one of claims 1 to 9.

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