Hot pressing device and solar cell processing equipment

Abstract

The utility model relates to an ironing device and solar cell processing equipment. The ironing device comprises a bracket, an ironing piece and a driving piece; the ironing piece is connected to the support, and the driving piece is connected with the ironing piece so as to be used for driving the ironing piece to move; the hot-pressing piece is provided with a hot-pressing surface; and the hot-pressing surface is used for hot-pressing an adhesive film. According to the hot-pressing device, under the action of the driving piece, the hot-pressing piece can be driven to move, so that the hot-pressing surface of the hot-pressing piece is in contact with the adhesive film, and then the adhesive film is hot-pressed, so that the light transmittance of the adhesive film at the hot-pressing position can be improved. When the bar code on the glue film needs to be scanned through the scanning probe, the bar code can be arranged at the ironing position, and then the scanning efficiency of the scanning probe can be improved. The solar cell processing equipment comprises a transmission mechanism, a scanning piece and the ironing device.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a hot pressing device and solar cell processing equipment. Background Art

[0002] Setting a barcode in a solar cell can conveniently record the information of the solar cell, and can accurately trace the solar cell according to the barcode information. In a solar cell, the barcode is usually set on the surface of the film. When scanning the barcode, the light needs to pass through the glass and film on one side of the solar cell. Due to the low light transmittance of the film, the scanning efficiency of the scanning probe is low. Utility Model Content

[0003] Based on this, it is necessary to provide a hot pressing device and a solar cell processing device. The hot pressing device can hot press the adhesive film at the barcode setting position to improve the light transmittance of the adhesive film at this position, thereby improving the scanning efficiency of the scanning probe.

[0004] A pressing device comprises a support, a pressing piece and a driving piece; the pressing piece is connected to the support, the driving piece is connected to the pressing piece to drive the pressing piece to move; the pressing piece has a pressing surface, and the pressing surface is used for pressing an adhesive film.

[0005] In some embodiments, the ironing device also includes a protective member connected to the bracket, the protective member has a protective cavity, and one end of the protective member is provided with an opening; the ironing member is arranged in the protective cavity, and the ironing surface can extend from the opening through the action of the driving member.

[0006] In some embodiments, there is a gap between the ironing member and the inner side wall of the protective member.

[0007] In some embodiments, the width of the gap is 5 mm to 15 mm.

[0008] In some embodiments, the maximum distance that the ironing surface can extend out of the opening is 3 mm to 10 mm.

[0009] In some embodiments, the pressing surface is rectangular, the length of the pressing surface is 50 mm to 100 mm, and the width of the pressing surface is 5 mm to 15 mm.

[0010] In some embodiments, the ironing piece is a sleeve-type ironing piece.

[0011] In some embodiments, the ironing device further includes a temperature detector, which is disposed inside the ironing piece to detect the temperature of the ironing piece.

[0012] In some embodiments, the driving member is a telescopic cylinder.

[0013] In the above-mentioned pressing device, the pressing member can be driven to move by the driving member, so that the pressing surface of the pressing member contacts the adhesive film, and then the adhesive film is pressed, which can improve the light transmittance of the adhesive film at the pressing position. When it is necessary to scan the barcode on the adhesive film by the scanning probe, the barcode can be set at the pressing position, thereby improving the scanning efficiency of the scanning probe.

[0014] A solar cell processing device comprises a transmission mechanism, a scanning piece and a hot pressing device; the bracket and the scanning piece of the hot pressing device are respectively connected to the transmission mechanism, the hot pressing piece and the scanning piece are respectively located on two opposite sides of the transmission mechanism, and the scanning piece is used to scan a barcode located on the surface of a film after being hot pressed by the hot pressing piece.

[0015] In the above solar cell processing equipment, the solar cell pre-finished product can be transmitted by the transmission mechanism. When the solar cell pre-finished product is transmitted to the position of the hot pressing device, the hot pressing member is driven to move by the driving member, and the hot pressing surface contacts the adhesive film on the solar cell pre-finished product to hot press the adhesive film. The light transmittance of the adhesive film after hot pressing is improved, which is conducive to promoting the improvement of the barcode scanning efficiency of the scanned piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the ironing device in one embodiment of the present application.

[0017] Figure 2 It is a schematic diagram of the cooperation between the hot pressing device and the glass and adhesive film of the solar cell pre-product in one embodiment of the present application.

[0018] Description of the markings in the figure:

[0019] 10. Hot pressing device; 101. Bracket; 1011. Mounting groove; 102. Hot pressing member; 103. Driving member; 104. Protective member; 1041. Opening; 20. Adhesive film; 30. Glass. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] See also Figure 1 In one embodiment of the present application, a pressing device 10 is provided. The pressing device 10 comprises a support 101, a pressing member 102 and a driving member 103. The pressing member 102 is connected to the support 101, and the driving member 103 is connected to the pressing member 102 to drive the pressing member 102 to move; the pressing member 102 has a pressing surface, and the pressing surface is used for pressing the adhesive film.

[0025] In solar cells, when the adhesive film is heated to the decomposition temperature of the crosslinker, the peroxide bonds in the crosslinker break to form peroxyl free radicals RO. ﹣, which is easy to combine with the H of the alkyl group on the side chain of EVA (ethylene-vinyl acetate copolymer). After the two groups combine, a cross-linked EVA is formed, which can achieve optical coupling between the film and the glass, and make the solar radiation transmittance exceed 90%. In the above-mentioned hot pressing device 10, the hot pressing member 102 can be driven to move through the action of the driving member 103, so that the hot pressing surface of the hot pressing member 102 contacts the film, and then the film is hot pressed, which can improve the light transmittance of the film at the hot pressing position. When it is necessary to scan the barcode on the film through a scanner, the barcode can be set at the hot pressing position, thereby improving the scanning efficiency of the scanner. It can be understood that when the scanning efficiency of the scanner for the barcode is improved, the passing efficiency of the solar cell pre-finished product in the scanning process during the solar cell processing process can be improved, thereby improving the preparation efficiency of solar cells.

[0026] It is understandable that the temperature of the hot pressing piece 102 can be adjusted by electric heating. Optionally, the temperature of the hot pressing piece 102 can be adjusted according to actual needs. Further optionally, the temperature of the hot pressing piece 102 is 260°C to 450°C. For example, the temperature of the hot pressing piece 102 can be, but is not limited to, 260°C, 280°C, 300°C, 320°C, 350°C, 380°C, 400°C, 420°C, 450°C, etc.

[0027] In some embodiments, the bracket 101 is a metal bracket. Optionally, the bracket 101 is a stainless steel bracket, a cast iron bracket or an aluminum alloy bracket.

[0028] Optionally, the bracket 101 is provided with a mounting groove 1011. When installing the ironing device 10, the bracket 101 can be installed on other equipment through the mounting groove 1011, thereby completing the installation of the ironing device 10. Optionally, the mounting groove 1011 is arranged at the bottom of the bracket 101. Further optionally, there are multiple mounting grooves 1011. Further optionally, multiple mounting grooves 1011 are arranged in parallel.

[0029] See also Figure 1 In the ironing device 10 shown therein, there are two mounting grooves 1011 , and the two mounting grooves 1011 are arranged in parallel at the bottom of the bracket 101 .

[0030] In some embodiments, the ironing device 10 further includes a protective member 104 connected to the bracket 101, the protective member 104 having a protective cavity, and an opening 1041 is provided at one end of the protective member 104. The ironing member 102 is provided in the protective cavity, and the ironing surface can extend from the opening 1041 through the action of the driving member 103. The provision of the protective member 104 can protect the ironing member 102 on the one hand, and reduce the risk of workers being burned by the ironing member 102 on the other hand.

[0031] Optionally, the protective member 104 is formed by a plurality of protective plates, a protective cavity is formed by the protective plates, and the hot pressing member 102 is disposed in the protective cavity. Figure 1 In the hot pressing device 10 shown, the protective member 104 is formed by four protective plates surrounding each other, and the four protective plates surround each other to form a rectangular protective cavity, and the hot pressing member 102 is arranged in the rectangular protective cavity.

[0032] In some embodiments, the protective member 104 is a metal protective member. Optionally, the protective member 104 is a stainless steel protective member, a cast iron protective member or an aluminum alloy protective member.

[0033] In some embodiments, there is a gap between the hot pressing piece 102 and the inner side wall of the protective piece 104. When there is a gap between the hot pressing piece 102 and the inner side wall of the protective piece 104, it can play a certain role in heat insulation, further improve the safety of the hot pressing device 10 during use, and reduce the risk of workers being burned by the hot pressing piece 102.

[0034] In some embodiments, the width of the gap is 5 mm to 15 mm. Optionally, the width of the gap between the hot pressing piece 102 and the inner side wall of the protective piece 104 can be, but is not limited to, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, etc. It is understandable that the width of the gap between the hot pressing piece 102 and the inner side wall of the protective piece 104 can also be selected in other suitable ranges within the range of 5 mm to 15 mm.

[0035] In some embodiments, the maximum distance that the hot pressing surface can extend out of the opening 1041 is 3 mm to 10 mm. It is understandable that the distance that the hot pressing surface can extend out of the opening 1041 represents the distance between the hot pressing surface and the opening 1041 after the hot pressing part 102 is extended under the action of the driving part 103. The distance that the hot pressing surface extends out of the opening 1041 within this range can better meet the distance conditions for hot pressing the film. At the same time, the distance that the hot pressing surface extends out of the opening 1041 is small, which can further reduce the risk of the staff being burned by the hot pressing part 102. Optionally, the maximum distance that the hot pressing surface can extend out of the opening 1041 can be but is not limited to 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc. It is understandable that the maximum distance that the hot pressing surface can extend out of the opening 1041 can also be other suitable choices within the range of 3 mm to 10 mm.

[0036] In some embodiments, the hot pressing surface is rectangular, the length of the hot pressing surface is 50mm~100mm, and the width of the hot pressing surface is 5mm~15mm. The hot pressing surface is rectangular, which can have good adaptability with the shape of the barcode. When the barcode is placed in the hot pressing position on the film, the barcode can be completely exposed, which is convenient for accurately scanning the barcode information. Optionally, the length of the hot pressing surface can be but not limited to 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, 100mm, etc. It is understandable that the length of the hot pressing surface can also be other suitable choices within the range of 50mm~100mm. Further optionally, the width of the hot pressing surface can be but not limited to 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, etc. It is understandable that the width of the hot pressing surface can also be other suitable choices within the range of 5mm~15mm.

[0037] In some embodiments, the pressing piece 102 is a sleeve-type pressing piece. Further, the pressing device 10 further includes a temperature detector (not shown in the figure), which is arranged inside the pressing piece 102 to detect the temperature of the pressing piece 102. The temperature of the pressing piece 102 can be detected in real time by setting the temperature detector, and then the temperature of the pressing piece 102 can be adjusted as needed according to the detected temperature information. Optionally, the temperature detector is a thermocouple.

[0038] In some embodiments, the hot pressing piece 102 is a copper hot pressing piece. The copper hot pressing piece has good thermal conductivity and can improve the uniformity of hot pressing of the adhesive film.

[0039] In some embodiments, the driving member 103 is a telescopic cylinder. It is understandable that when the hot pressing member 102 is required to hot press the adhesive film, the hot pressing member 102 can be driven to move by the telescopic cylinder, so that the hot pressing surface of the hot pressing member 102 extends from the opening 1041 of the protective member 104, so that the hot pressing surface contacts the adhesive film 20, and then the hot pressing of the adhesive film is completed. Optionally, the driving member 103 is a vertical telescopic cylinder. The movement of the hot pressing member 102 can be adjusted in the vertical direction by the vertical telescopic cylinder, so that the hot pressing member 102 can be more convenient to hot press the adhesive film. Further optionally, the driving member 103 is a finger cylinder.

[0040] Another embodiment of the present application provides a solar cell processing device. The solar cell processing device includes a transmission mechanism, a scanning unit and the above-mentioned pressing device 10. The support 101 and the scanning unit of the pressing device 10 are respectively connected to the transmission mechanism, the pressing unit 102 and the scanning unit are respectively located on opposite sides of the transmission mechanism, and the scanning unit is used to scan the barcode located on the surface of the adhesive film 20 after being pressed by the pressing unit 102.

[0041] Optionally, the pressing piece 102 and the scanning piece are located above and below the transmission mechanism, respectively. For example, when the pressing piece 102 and the scanning piece are located above and below the transmission mechanism, respectively, the transmission channel of the transmission mechanism is located between the pressing piece 102 and the scanning piece. When the solar cell pre-finished product is transmitted on the transmission mechanism, the pressing piece 102 located above the transmission mechanism can press the adhesive film in the solar cell pre-finished product. After the pressing, the light transmittance of the adhesive film increases, and then a barcode is placed at the pressing position of the adhesive film, and the scanning piece located below the transmission mechanism can efficiently scan the barcode on the adhesive film.

[0042] Optionally, the scanning component is a scanning probe.

[0043] In the solar cell processing equipment of this embodiment, the solar cell pre-finished product can be transported by the transmission mechanism. When the solar cell pre-finished product is transported to the position of the hot pressing device 10, the hot pressing member 102 is driven to move by the driving member 103, and the hot pressing surface contacts the adhesive film on the solar cell pre-finished product to hot press the adhesive film. The light transmittance of the adhesive film after hot pressing is improved, which is conducive to improving the efficiency of barcode scanning of the scanned piece.

[0044] Understandably, see Figure 2 The solar cell pre-finished product includes a glass 30 and an adhesive film 20 which are stacked. When the solar cell pre-finished product is transported to the position of the hot pressing device 10 by a transport mechanism (not shown in the figure), the adhesive film 20 can be hot pressed by the hot pressing member 102. After the hot pressing is completed, the light transmittance of the adhesive film 20 at the hot pressing position is improved, which is conducive to promoting the efficient scanning of the barcode by the scanner (not shown in the figure). Specifically, after the adhesive film 20 is hot pressed by the hot pressing member 102, a barcode is placed at the hot pressing position, and then the barcode is scanned by the scanner. Since the light transmittance of the adhesive film 20 below the barcode is improved at this time, the scanning efficiency of the scanner for the barcode is also effectively improved.

[0045] It is also understandable that, after the solar cell pre-finished product is hot-pressed, the hot-pressing member 102 can be driven to move by the driving member 103, so that the hot-pressing member 102 retracts into the protective cavity of the protective member 104. When the next solar cell pre-finished product is transferred to the hot-pressing device 10, the hot-pressing member 102 is driven to move by the driving member 103, so that the hot-pressing member 102 extends out of the opening 1041 of the protective member 104, and then the adhesive film 20 on the solar cell pre-finished product is hot-pressed.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims, and the specification and drawings may be used to interpret the contents of the claims.

Claims

1. A hot pressing device (10), characterized in that: The invention comprises a support (101), a pressing piece (102) and a driving piece (103); the pressing piece (102) is connected to the support (101), and the driving piece (103) is connected to the pressing piece (102) to drive the pressing piece (102) to move; the pressing piece (102) has a pressing surface, and the pressing surface is used for pressing an adhesive film (20).

2. The ironing device (10) according to claim 1, characterized in that: The ironing device (10) further comprises a protective member (104) connected to the bracket (101), the protective member (104) having a protective cavity, and an opening (1041) being provided at one end of the protective member (104); the ironing member (102) is arranged in the protective cavity, and the ironing surface can extend from the opening (1041) through the action of the driving member (103).

3. The ironing device (10) according to claim 2, characterized in that: There is a gap between the ironing piece (102) and the inner side wall of the protective piece (104).

4. The ironing device (10) according to claim 3, characterized in that: The width of the gap is 5 mm to 15 mm.

5. The ironing device (10) according to claim 2, characterized in that: The maximum distance that the hot pressing surface can extend out of the opening (1041) is 3 mm to 10 mm.

6. The ironing device (10) according to any one of claims 1 to 5, characterized in that: The pressing surface is rectangular, the length of the pressing surface is 50 mm to 100 mm, and the width of the pressing surface is 5 mm to 15 mm.

7. The ironing device (10) according to any one of claims 1 to 5, characterized in that: The hot pressing piece (102) is a sleeve-type hot pressing piece.

8. The ironing device (10) according to claim 7, characterized in that: The ironing device (10) further comprises a temperature detector, which is arranged inside the ironing piece (102) and is used to detect the temperature of the ironing piece (102).

9. The ironing device (10) according to any one of claims 1 to 5, characterized in that: The driving member (103) is a telescopic cylinder.

10. A solar cell processing device, characterized in that: It comprises a transmission mechanism, a scanning piece and a hot pressing device (10) according to any one of claims 1 to 9; the support (101) and the scanning piece of the hot pressing device (10) are respectively connected to the transmission mechanism, the hot pressing piece (102) and the scanning piece are respectively located on two opposite sides of the transmission mechanism, and the scanning piece is used to scan a bar code located on the surface of the adhesive film (20) after being hot pressed by the hot pressing piece (102).

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