Label and photovoltaic module

Abstract

The utility model belongs to the field of photovoltaic technology, and discloses a label and a photovoltaic assembly. The label comprises a surface base material, an adhesive layer and a protective film. The first surface of the surface base material is provided with an information identifier, the information identifier is flush with the first surface of the surface base material, and the color of the information identifier is different from that of the surface base material; one side of the adhesive layer is in adhesive connection with a second surface of the surface base material, and the second surface and the first surface are arranged oppositely; the protective film is arranged on the surface of the other opposite side of the adhesive layer in a peelable mode. The photovoltaic module comprises a photovoltaic module body, the photovoltaic module body comprises a frame and a laminated piece packaged in the frame, the photovoltaic module further comprises the label, and after the protective film of the label is peeled off, the adhesive layer can be adhered to the frame. The information identification is flush with the surface base material, so that the information identification cannot fall off from the surface base material after the edges are in contact and friction with other objects.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a label and a photovoltaic component. Background Art

[0002] Since the output voltage of a single solar cell is relatively low, and the electrodes of an unpackaged cell are easily detached due to environmental influences, a certain number of single cells must be sealed into a laminate in series or parallel, and the laminate is packaged in a frame to form a photovoltaic module.

[0003] Generally, nameplates and barcodes are provided on the frames of photovoltaic modules to identify the manufacturer or other information of the photovoltaic modules to ensure the traceability of the products.

[0004] In the prior art, nameplates and barcodes are printed on labels by thermal transfer.

[0005] However, when thermal transfer is used to print nameplates and barcodes, the thermal print head of the thermal transfer printer heats the ribbon, and the ink melts to form a pattern, barcode, character and other printing media on the label material, which together with the label form the nameplate and barcode. From a microscopic structural point of view, the nameplate and barcode printed by thermal transfer are protruding relative to the surface of the label, so that the barcode and nameplate are easily detached due to the collision and friction between the edges of the protruding part and other objects. Utility Model Content

[0006] The utility model aims to provide a label and a photovoltaic module, which can solve the technical problem in the prior art that information labels such as bar codes and nameplates of photovoltaic modules are easy to fall off.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] Tags, including:

[0009] A surface substrate, wherein an information mark is disposed on a first surface of the surface substrate, the information mark is flush with the first surface of the surface substrate, and the color of the information mark is different from the color of the surface substrate;

[0010] An adhesive layer, one side of which is adhesively connected to a second surface of the surface substrate, the second surface being disposed opposite to the first surface;

[0011] The protective film is peelably disposed on the other side surface of the adhesive layer that is disposed opposite to the adhesive layer.

[0012] In one embodiment, the surface substrate is made of thermoplastic polyester.

[0013] In one embodiment, the surface substrate is made of PET.

[0014] In one embodiment, the information label is integrally formed on the surface substrate.

[0015] In one embodiment, the information mark is integrally formed on the surface substrate by laser engraving.

[0016] In one embodiment, the information identification includes a barcode, a nameplate, a QR code, a graphic or a number.

[0017] In one embodiment, the protective film is a release film.

[0018] In one embodiment, the thickness of the surface substrate is 0.03 mm-0.04 mm.

[0019] In one embodiment, the color of the surface substrate is white, and the color of the information mark is black.

[0020] A photovoltaic module comprises a photovoltaic module body, wherein the photovoltaic module body comprises a frame and a laminate encapsulated in the frame. The photovoltaic module also comprises the above-mentioned label, and after the protective film of the label is peeled off, the adhesive layer can be adhered to the frame.

[0021] Beneficial effects of the utility model:

[0022] When using the label provided by the utility model, the protective film is torn off, and then the adhesive layer is pasted on the corresponding position of the product. Compared with the prior art in which the barcode and nameplate are protruding relative to the label surface, the first surface information mark set on the surface substrate is flush with the first surface of the surface substrate, and the information mark will not fall off from the surface substrate due to the contact and friction between the edges and other objects.

[0023] The photovoltaic assembly proposed by the utility model adopts the above-mentioned label to ensure the traceability of the photovoltaic assembly.

[0024] When the label is used, the protective film is torn off, and then the adhesive layer is pasted to the corresponding position of the frame. Compared with the prior art in which the barcode and nameplate are protruding relative to the label surface, the information mark is flush with the first surface of the surface substrate, and the information mark will not fall off from the surface substrate due to the contact and friction between the edges and other objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the structure of the label provided in the first embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of the structure of the photovoltaic assembly provided in the second embodiment of the present utility model.

[0028] In the figure:

[0029] 10. Border;

[0030] 1. Surface substrate; 2. Adhesive layer; 3. Protective film; 4. Information label. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] Embodiment 1

[0039] See also Figure 1 and Figure 2 , this embodiment provides a label that can be attached to the frame 10 of the photovoltaic module to ensure the traceability of the product.

[0040] Specifically, see Figure 1 In this embodiment, the label includes a surface substrate 1, an adhesive layer 2 and a protective film 3.

[0041] The first surface of the surface substrate 1 is provided with an information mark 4 , the information mark 4 is flush with the first surface of the surface substrate 1 , and the color of the information mark 4 is different from the color of the surface substrate 1 .

[0042] Furthermore, in this embodiment, the color of the surface substrate 1 is white, and the color of the information mark 4 is black.

[0043] Optionally, the information identification 4 includes a barcode, a nameplate, a QR code, a graphic or a number.

[0044] Specifically, in this embodiment, the information identification 4 includes a nameplate and a barcode.

[0045] Barcode is a graphic identifier that expresses a group of information by arranging multiple black bars and blanks of different widths according to certain coding rules. Common barcodes are parallel line patterns composed of black bars (referred to as bars) and white bars (referred to as blanks) with very different reflectivity. Barcodes can mark a lot of information such as the country of production, manufacturer, product name, production date, etc. In this embodiment, only the black bars of the barcode need to be printed, and the blank part between two adjacent black bars is the blank part of the barcode.

[0046] The nameplate is a mark fixed on the product after it is put on the market to provide users with information such as manufacturer trademark identification, brand differentiation, and product parameter recording. The nameplate is also called a sign. The nameplate is mainly used to record some technical data of the manufacturer and rated working conditions so that it can be used correctly without damaging the equipment.

[0047] In this embodiment, one side of the adhesive layer 2 is adhesively connected to the second surface of the surface substrate 1, and the second surface is arranged opposite to the first surface.

[0048] The protective film 3 is peelably disposed on the other side surface of the adhesive layer 2 that is disposed opposite thereto.

[0049] Specifically, in this embodiment, the protective film 3 is a release film. The release film refers to a film with a differentiated surface, and the release film is not sticky after contacting the adhesive layer 2. After the release film is torn off, the adhesive layer 2 maintains its adhesive properties and can be attached to the product.

[0050] When the label provided in this embodiment is used, the protective film 3 is torn off, and then the adhesive layer 2 is pasted on the corresponding position of the product. Compared with the prior art in which the barcode and nameplate are protruding relative to the label surface, the information mark 4 is arranged on the first surface of the surface substrate 1, and the information mark 4 is flush with the first surface of the surface substrate 1, and the information mark 4 will not fall off from the surface substrate 1 due to the contact and friction between the edges and other objects.

[0051] Optionally, in this embodiment, the material of the surface substrate 1 includes thermoplastic polyester material.

[0052] Thermoplastic polyester is a saturated polyester with thermoplastic properties. It is mostly used as high-performance films and fibers. In this embodiment, thermoplastic polyester is used to form a thinner film, that is, the surface substrate 1.

[0053] Further optionally, the surface substrate 1 is made of PET material. Polyethylene terephthalate (PET) is the main type of thermoplastic polyester.

[0054] PET is a thermoplastic polymer, also known as polyester resin. It is a condensation product of terephthalic acid and ethylene glycol. PET material is milky white or light yellow, is a highly crystalline polymer, has a smooth and shiny surface, is non-toxic, weather-resistant, and has good chemical resistance. In this embodiment, the PET material is milky white.

[0055] The advantages of PET material include:

[0056] 1. Wear-resistant, scratch-resistant, acid-resistant, alkali-resistant, corrosion-resistant, and yellowing-resistant;

[0057] 2. Excellent mechanical properties, high strength and high rigidity;

[0058] 3. Easy to process, it can be processed by injection molding, blow molding, extrusion and other methods.

[0059] In this embodiment, the information label 4 is integrally formed on the surface substrate 1 .

[0060] Optionally, in this embodiment, the information mark 4 is integrally formed on the surface substrate 1 by laser engraving.

[0061] Specifically, in this embodiment, the thickness of the surface substrate 1 is 0.03mm-0.04mm. Exemplarily, the thickness of the surface substrate 1 is 0.03mm, 0.031mm, 0.032mm, 0.033mm, 0.034mm, 0.035mm, 0.036mm, 0.037mm, 0.038mm, 0.039mm or 0.04mm. Further specifically, in this embodiment, the thickness of the surface substrate 1 is 0.036mm.

[0062] If the thickness of the surface substrate 1 is too small, the surface substrate 1 may be penetrated during the laser engraving process, and even the adhesive layer 2 may be damaged; if the thickness of the surface substrate 1 is too large, unnecessary waste of raw materials will be caused. Therefore, in this embodiment, the thickness of the surface substrate 1 is 0.036 mm, which can ensure that the adhesive layer 2 will not be wasted during the process of forming the information mark 4 during the laser engraving process, and can also avoid waste of raw materials.

[0063] Optionally, an infrared picosecond laser is used to print the information mark 4 on the upper surface of the surface substrate 1. Specifically, the wavelength of the infrared picosecond laser is 1064nm and the power is 10W.

[0064] Optionally, in other embodiments, an ultraviolet picosecond laser is used to print the information mark 4 on the upper surface of the surface substrate 1. Specifically, the wavelength of the ultraviolet picosecond laser is 355nm and the power is 5W.

[0065] When thermal transfer printing in the prior art forms information labels such as barcodes or nameplates, the thermal print head heats the ribbon, and the ink of the ribbon melts and adheres to the label material to form information labels such as patterns, barcodes, characters, etc., which together with the label form the nameplate and barcode; thermal transfer printing consumables include ribbons, such as carbon ribbons, etc. The shortest storage time of the media printed by thermal transfer is about two years.

[0066] During the thermal transfer printing process, problems such as broken print needles, missing characters, and blurring often occur due to ribbon problems. In addition, the media printed by thermal transfer has an unstable storage time and will fade over time.

[0067] From the perspective of microstructure, the information label 4 formed by thermal transfer printing is protruding relative to the label surface, and the protruding edges are easily knocked against other objects, causing the information label 4 to fall off.

[0068] In the label provided in this embodiment, the information mark 4 is integrally formed on the surface substrate 1 by laser engraving. The information mark 4 is directly formed on the surface of the surface substrate, and the information mark 4 is flush with the surface substrate 1 and does not protrude relative to the surface substrate 1. The information mark 4 will not fall off due to collision with other objects due to edges.

[0069] The laser engraving method eliminates the need to consume ribbons, saving costs. At the same time, it eliminates printing quality problems caused by ribbons, reduces user complaints, increases the storage time of information labels 4, and improves product traceability.

[0070] Optionally, when laser engraving is performed to form the information mark 4, the surface PET material of the surface substrate 1 is laser modified using a picosecond or femtosecond laser. Nanoscale substances are generated in the laser modified area to enhance the light absorption of the area, which appears as black or nearly black patterns, barcodes, characters, etc. when observed by the naked eye. The black or nearly black patterns, barcodes, characters, etc. are the directly generated information mark 4.

[0071] Exemplarily, the principle of laser engraving to form the information mark 4 is: using high-energy-density picosecond and femtosecond lasers to quickly irradiate the surface of the surface substrate 1, ablating and vaporizing the top layer of the surface substrate 1 to form a nano effect. The particle size of the product is processed to the nano level, and the light absorption of the material is increased, so that the visible light irradiating the material is absorbed, and very little visible light is reflected, which appears black or close to black when observed by the naked eye.

[0072] It should be noted that picoseconds and femtoseconds refer to the time control units in the laser processing process. Usually, laser processing is a single pulse of energy acting on the surface of the material in a very short time, and through high-frequency repetitive work, it forms applications such as drilling, cutting, marking, and welding. 1 second = 109 nanoseconds = 1012 picoseconds = 1015 femtoseconds. The shorter the time, the shorter the time the laser acts on the surface of the material, the smaller the impact on the surface of the material, and the better the processing effect. Several laser pulses in the order of picoseconds to femtoseconds can achieve "cold processing" of the material, that is, the temperature of the lattice is always kept relatively low, and there will be no "hot zone" in the molten state. The material in the area irradiated by the laser is directly separated by vaporization, forming a neat and precise processing morphology.

[0073] Exemplarily, in this embodiment, the label making process is as follows:

[0074] Cut the label paper, and use vacuum adsorption to adsorb the back of the protective film 3 onto the working platform of the laser to ensure that the protective film 3 is adsorbed flat; then start the laser to modify the label and take it out. The processing time is about 13 seconds.

[0075] Embodiment 2

[0076] See also Figure 2 This embodiment provides a photovoltaic module, which includes a photovoltaic module body. The photovoltaic module body includes a frame 10 and a laminate encapsulated in the frame 10.

[0077] The photovoltaic assembly also includes the label of the first embodiment. After the protective film 3 of the label is peeled off, the adhesive layer 2 can be adhered to the frame 10 .

[0078] The photovoltaic assembly provided in this embodiment uses the above-mentioned label to ensure the traceability of the photovoltaic assembly.

[0079] When the label is used, the protective film 3 is torn off, and then the adhesive layer 2 is pasted to the corresponding position of the frame 10. Compared with the prior art in which the barcode and nameplate are protruding relative to the label surface, the information mark 4 is flush with the first surface of the surface substrate 1, and the information mark 4 will not fall off from the surface substrate 1 due to the contact and friction between the edges and other objects.

[0080] Preferably, a label sticking position is provided on the frame 10. Specifically, the label sticking position is a groove provided on the surface of the frame 10; preferably, the depth of the groove is equal to the sum of the thickness of the surface substrate 1 and the adhesive layer 2, so as to prevent the label from protruding relative to the surface of the frame 10 and being easily fallen off.

[0081] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A label, characterized in that include: A surface substrate (1), wherein an information mark (4) is provided on a first surface of the surface substrate (1), the information mark (4) is flush with the first surface of the surface substrate (1), and the color of the information mark (4) is different from the color of the surface substrate (1); An adhesive layer (2), one side of which is adhesively connected to a second surface of the surface substrate (1), the second surface being arranged opposite to the first surface; The protective film (3) is peelably arranged on the other side surface of the adhesive layer (2) that is arranged opposite to the adhesive layer (2).

2. The label according to claim 1, characterized in that: The material of the surface substrate (1) includes thermoplastic polyester material.

3. The label according to claim 2, characterized in that: The surface substrate (1) is made of PET.

4. The label according to claim 1, characterized in that: The information label (4) is integrally formed on the surface substrate (1).

5. The label according to claim 4, characterized in that: The information mark (4) is integrally formed on the surface substrate (1) by laser engraving.

6. The label according to claim 1, characterized in that: The information identification (4) includes a barcode, a nameplate, a QR code, a graphic or a number.

7. The label according to claim 1, characterized in that: The protective film (3) is a release film.

8. The label according to any one of claims 1 to 7, characterized in that: The thickness of the surface substrate (1) is 0.03 mm-0.04 mm.

9. The label according to any one of claims 1 to 7, characterized in that: The color of the surface substrate (1) is white, and the color of the information mark (4) is black.

10. A photovoltaic module, comprising a photovoltaic module body, wherein the photovoltaic module body comprises a frame (10) and a laminate encapsulated in the frame (10), characterized in that: The photovoltaic module further comprises a label as claimed in any one of claims 1 to 9, and after the protective film (3) of the label is peeled off, the adhesive layer (2) can be glued to the frame (10).

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