阅读说明：本技术 单车用晶硅太阳能电池板前层封装结构 (Front layer packaging structure of crystalline silicon solar panel for bicycle ) 是由 邱旭东 樊仔欣 桂裕鹏 于 2020-06-04 设计创作，主要内容包括：本发明公开了一种单车用晶硅太阳能电池板前层封装结构,其为贴合在太阳能电池片表面的复合膜,并与电池片一体化封装,它包括由受光面到背光面依次叠放的耐候层、第一粘结层、缓冲支撑层、第二粘结层。所述缓冲支撑层为透明PET薄膜、PEN薄膜、PA薄膜或它们的改性、复合膜中的一种。本发明的优点在于：通过采用上述四层封装结构的晶硅太阳能电池片,使用常见高分子材料,满足单车太阳能电池板较低使用年限要求的同时,质量轻,成本低。在电池板受到砸击、碰撞时对电池芯片具有很好地缓冲、防护效果,避免电池片被损坏；解决了单车板电池芯片易被砸击、碰撞造成发电效率下降的问题。(The invention discloses a front-layer packaging structure of a crystalline silicon solar panel for a bicycle, which is a composite film attached to the surface of a solar cell and integrally packaged with the solar cell. The buffer supporting layer is one of a transparent PET film, a PEN film and a PA film or a modified composite film thereof. The invention has the advantages that: through adopting above-mentioned four layers packaging structure's brilliant silicon solar wafer, use common macromolecular material, when satisfying the lower service life requirement of bicycle solar cell panel, the quality is light, and is with low costs. When the battery panel is hit or collided, the battery chip can be well buffered and protected, and the battery piece can be prevented from being damaged; the problem of the low generating efficiency that single car board battery chip is easily pounded, collided and causes is solved.)

1. The utility model provides a layer packaging structure before crystalline silicon solar cell panel for bicycle, its is the laminating at the surperficial complex film of solar wafer to with the integrated encapsulation of battery piece, its characterized in that: the weather-resistant coating comprises a weather-resistant layer (1), a first bonding layer (2), a buffer supporting layer (3) and a second bonding layer (4) which are sequentially stacked from a light receiving surface to a backlight surface; the buffer supporting layer (3) is one of a transparent PET film, a PEN film, a PA film or a modified composite film thereof.

2. The front-layer packaging structure of the crystalline silicon solar panel for the bicycle according to claim 1, characterized in that: the weather-resistant layer (1) is one of a transparent frosted PET film, a single-sided release PET film, a weather-resistant modified PET film, a transparent photovoltaic back plate or a fluorine-containing film.

3. The front-layer packaging structure of the crystalline silicon solar panel for the bicycle according to claim 1 or 2, characterized in that: the thickness of the weather-resistant layer (1) is 0.02-0.4 mm.

4. The front-layer packaging structure of the crystalline silicon solar panel for the bicycle according to claim 1, characterized in that: the first bonding layer (2) and the second bonding layer (4) are respectively one of a transparent EVA adhesive film, a polyolefin adhesive film, an organic silica gel layer, an acrylic adhesive layer, a polyurethane adhesive layer and a polyester adhesive layer.

5. The front-layer packaging structure of the crystalline silicon solar panel for the bicycle according to claim 1 or 4, wherein: the thickness of the first bonding layer (2) and the thickness of the second bonding layer (4) are both 0.1-0.8 mm.

6. The front-layer packaging structure of the crystalline silicon solar panel for the bicycle according to claim 1, characterized in that: the thickness of the buffer supporting layer (3) is 0.1-2 mm.

7. The front-layer packaging structure of the crystalline silicon solar panel for the bicycle according to claim 1, characterized in that: the visible light transmittance of the composite film is more than 80%.

8. The front-layer packaging structure of the crystalline silicon solar panel for the bicycle according to claim 1, characterized in that: the composite film is a packaging material for the front side of the battery piece.

Technical Field

The invention relates to a solar cell packaging assembly, in particular to a front layer packaging structure of a crystalline silicon solar panel for a bicycle.

Background

With the rapid development of sharing economy and the appearance of sharing bicycles, people can go out more green and convenient, and great convenience is brought to the life of people. The sharing single car is quickly accepted by a large number of consumers in a quick and convenient renting mode, and becomes the most successful sharing economic product. The existing shared bicycle is mainly based on an intelligent lock technology capable of unlocking by scanning codes, rapid unlocking and locking operations are conveniently realized through a mobile terminal, and the intelligent lock is required to have a corresponding communication function and related control devices and driving devices which all need electric power to ensure normal operation of the intelligent lock. Therefore, power supply becomes the essential component part of sharing bicycle, and the solar cell panel that the power supply of present sharing bicycle almost all adopted is as power supply, and solar cell panel mainly installs in the anterior basket bottom of sharing bicycle, and convenience of customers holds article and provides power supply for the intelligence lock. However, the battery plates as the bottom plate of the frame are thrown by heavy objects, hit and collide, so that the battery plates are cracked and broken, and the charging efficiency of the battery plates is greatly reduced.

Chinese patents CN201821567649.1, CN201821567650.4, CN201821567646.8, and the like all disclose solar cell panel packaging front panels, which are mainly used for packaging thin film solar cells, such as CIGS cells, amorphous silicon cells, and the like, wherein a continuous transparent conductive layer is usually used as a transparent surface electrode to collect current, and the thin film solar cell has the characteristics of flexibility and bending, and has little influence on the power generation characteristics of the cell after being impacted, so the requirement on the impact resistance is not high, but the requirement on the water vapor barrier property is usually lower than 5 × 10-4g/(m2 × d) because the characteristic of the transparent conductive layer has a high requirement on the water vapor barrier property, so the requirement on the packaging material is extremely high, and a high-water vapor barrier membrane with high price is required for packaging, and in addition, the power generation efficiency of the thin film solar cell per unit area is low, and the unit power generation cost is high.

Compared with the prior art, the crystalline silicon solar cell has high generating efficiency per unit area and low price, so most of the current single-vehicle solar panels adopt the crystalline silicon solar cell, but the crystalline silicon solar cell takes a single crystal or polycrystalline silicon wafer as a substrate, and hidden cracks and fragments are easily generated after the crystalline silicon solar cell is impacted, so that the power of the cell is rapidly reduced.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a front-layer packaging structure of a crystalline silicon solar panel for a bicycle, which has low cost and strong impact resistance.

In order to achieve the purpose, the front layer packaging structure of the crystalline silicon solar panel for the bicycle, which is designed by the invention, is a composite film attached to the surface of a solar cell and integrally packaged with the cell, and is characterized in that: the weather-resistant layer, the first bonding layer, the buffer supporting layer and the second bonding layer are sequentially stacked from the light receiving surface to the backlight surface; the buffer supporting layer is one of a transparent PET film, a PEN film and a PA film or a modified composite film thereof.

Preferably, the weather-resistant layer is one of a transparent frosted PET film, a single-sided release PET film, a weather-resistant modified PET film, a transparent photovoltaic back plate or a fluorine-containing film.

Further, the thickness of the weather-resistant layer is 0.02-0.4 mm.

Preferably, the first bonding layer and the second bonding layer are respectively one of a transparent EVA adhesive film, a polyolefin adhesive film, an organic silica gel layer, an acrylic adhesive layer, a polyurethane adhesive layer, and a polyester adhesive layer.

Furthermore, the thickness of the first bonding layer and the thickness of the second bonding layer are both 0.1-0.8 mm.

Furthermore, the thickness of the buffer supporting layer is 0.1-2 mm.

Preferably, the visible light transmittance of the composite film is more than 80%.

Preferably, the composite film is a battery piece front side packaging material.

The invention has the advantages that: through adopting above-mentioned four layers packaging structure's brilliant silicon solar wafer, use common macromolecular material, when satisfying the lower service life requirement of bicycle solar cell panel, the quality is light, and is with low costs. When the battery panel is hit or collided, the battery chip can be well buffered and protected, and the battery piece can be prevented from being damaged; the problem of the low generating efficiency that single car board battery chip is easily pounded, collided and causes is solved.

Drawings

Fig. 1 is a schematic structural diagram of a front-layer packaging structure of a crystalline silicon solar panel for a bicycle.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

The front-layer packaging structure of the crystalline silicon solar panel for the bicycle shown in fig. 1 is a composite film attached to the surface of a solar cell, and integrally packaged with the solar cell, and comprises a weather-resistant layer 1, a first bonding layer 2, a buffer supporting layer 3 and a second bonding layer 4 which are sequentially stacked from a light receiving surface to a backlight surface. The buffer supporting layer 3 is one of transparent PET film, PEN film, PA film or their modified and composite films. The thickness of the buffer supporting layer 3 is 0.1-2 mm.

The weather-resistant layer 1 is one of a transparent frosted PET film, a single-sided release PET film, a weather-resistant modified PET film, a transparent photovoltaic back plate or a fluorine-containing film. The thickness of the weather-resistant layer 1 is 0.02-0.4 mm.

The first bonding layer 2 and the second bonding layer 4 are respectively one of a transparent EVA adhesive film, a polyolefin adhesive film, an organic silica gel layer, an acrylic adhesive layer, a polyurethane adhesive layer and a polyester adhesive layer. The thickness of the first bonding layer 2 and the second bonding layer 4 is 0.1-0.8 mm.

The visible light transmittance of the composite film is more than 80%. The composite film is a packaging material for the front side of the battery piece.

When the shared single-vehicle solar panel adopting the front-layer packaging structure of the single-vehicle crystalline silicon solar panel is packaged, due to the fact that the number of layers is large and multiple layers of high molecular materials are provided, the conditions that heat transfer is slow, the temperature rise of upper layer materials is delayed and the like exist, and therefore the vacuum-pumping step-by-step pressurization mode is adopted for lamination:

firstly, sequentially laying materials of each layer of a front plate, a battery piece and a rear plate from top to bottom, placing the front plate, the battery piece and the rear plate in a laminating machine, heating to 130-150 ℃ in a vacuum-pumping state, and keeping for 3-7 min;

then, step-by-step pressurization is carried out: vacuumizing the lower chamber, pressurizing the upper chamber to 10-40 kpa, keeping for 1-3 min, pressurizing the upper chamber to 40-70 kpa again, keeping for 1-3 min, pressurizing the upper chamber to 70-90 kpa for the third time, and keeping for 6-15 min to finish the laminating processing of the cell panel;

and finally, cutting the battery panel, and mounting the junction box to obtain a corresponding product.