阅读说明：本技术 一种太阳能电池组件及其制备方法 (Solar cell module and preparation method thereof ) 是由 程晓龙 顾鸿扬 刘磊 于 2018-12-26 设计创作，主要内容包括：本发明涉及太阳能电池制备领域,具体涉及一种太阳能电池组件及其制备方法,太阳能电池组件包括依次排列的前板、阻水膜、太阳能芯片和背板,所述前板、阻水膜、太阳能芯片和背板之间均通过胶膜粘接,所述阻水膜包括PET层以及沉积在所述PET层上的高阻层,所述高阻层位于靠近所述太阳能芯片的一侧。通过将高阻层设置在靠近太阳能芯片的一侧,高阻层与胶膜之间的粘接力比PET层与胶膜之间的粘接力好,故在经过层压之后,阻水层与太阳能芯片之间连接较为紧密,降低了水汽进入到太阳能芯片处导致太阳能芯片发生损坏的情况发生的可能性,扩展了PET层作为衬底的应用,降低了太阳能电池组件的生产成本。(The invention relates to the field of solar cell preparation, in particular to a solar cell module and a preparation method thereof. Through setting up the high resistant layer in the one side that is close to solar module, the adhesion between high resistant layer and the glued membrane is better than the adhesion between PET layer and the glued membrane, so after the lamination, be connected between water-blocking layer and the solar module comparatively inseparably, reduced steam and entered into solar module department and lead to solar module to take place the possibility that the condition of damage takes place for solar module, expanded the application of PET layer as the substrate, reduced solar module's manufacturing cost.)

1. The utility model provides a solar cell module, its characterized in that includes front bezel (1), water-blocking film (2), solar chip (3) and backplate (4) that top-down arranged in proper order, all bond through glued membrane (5) between front bezel (1), water-blocking film (2), solar chip (3) and backplate (4), water-blocking film (2) include substrate (21) and deposit and are in high resistance layer (22) on substrate (21), high resistance layer (22) are located and are close to one side of solar chip (3).

2. The solar cell module according to claim 1, wherein a water-blocking film (2) is also arranged between the solar chip (3) and the back sheet (4), and the high-resistance layer (22) of the water-blocking film (2) is located on the side close to the solar chip (3).

3. Solar cell module according to claim 2, characterized in that the substrate (21) is made of at least one of a PET material, a PE material, a PP material.

4. A method for producing a solar cell module according to any one of claims 1 to 3, comprising the steps of:

and arranging the front plate (1), the water-blocking film (2), the solar chip (3), the back plate (4) and the adhesive film (5) which are sequentially stacked on a mould, and carrying out heating laminating operation on the front plate, the water-blocking film, the solar chip (3), the back plate (4) and the adhesive film (5) to prepare the laminated solar cell module, wherein the heat conductivity coefficient of the mould is less than 1w/m ∙ k.

5. The method of manufacturing according to claim 4, wherein the mold is made of a laminated composite material of glass fiber and resin.

6. The method of manufacturing of claim 4, wherein the heating lamination operation is performed in a lamination press comprising an upper chamber and a lower chamber, the heating lamination operation comprising the steps of:

placing a mold fixed with a solar cell module raw material in a lower cavity of a laminating machine, simultaneously vacuumizing the upper cavity and the lower cavity of the laminating machine for 2-15min until the vacuum degrees of the upper cavity and the lower cavity of the laminating machine are stabilized at negative atmospheric pressure, simultaneously heating the lower cavity until the temperature is raised to a laminating temperature, after maintaining for a period of time, performing vacuum elimination operation on the upper cavity to perform compression molding on the solar cell module raw material, wherein the laminating temperature is 130-180 ℃, and the temperature holding time is 1-15 min.

7. The method of claim 6, wherein the lamination temperature is 135 ℃, 140 ℃, 145 ℃, 150 ℃, 155 ℃, 160 ℃, 165 ℃, or 170 ℃.

8. The method of claim 6, wherein the temperature maintenance time is 2min, 4min, 8min, 9min, or 12 min.

9. The method of claim 6, wherein the de-vacuuming operation comprises the steps of: the vacuum degree of the upper chamber is stabilized within-60 to-80 kpa within 20s-1min, and the vacuum degree of the upper chamber is stabilized within-5 to-15 kpa within 20s-1 min.

10. The method for preparing according to claim 9, wherein the manufacturing of the vacuum environment comprises the steps of: the vacuum in the upper chamber was reduced to-70 kpa in 30s and to-10 kpa in 30 s.

Technical Field

The invention relates to the field of solar cell preparation, in particular to a solar cell module and a preparation method thereof.

Background

The solar cell module (also called solar panel, photovoltaic module) is the core part of the solar power system, and also the most important part of the solar power system, and its function is to convert the solar energy into electric energy, or to send it to the accumulator for storage, or to push the load to work, and the quality and cost of the solar cell module will directly determine the quality and cost of the whole system.

A general solar cell module structure includes: the solar cell module comprises a front plate, an adhesive film, a water-blocking film, an adhesive film, a solar chip, an adhesive film and a back plate, wherein in the manufacturing process, the structures are generally arranged in sequence and then packaged, and then laminated to obtain the solar cell module. The water-blocking film is used for preventing water vapor from entering the solar chip to damage the solar chip and comprises a substrate and a high-resistance layer deposited on the substrate, wherein the high-resistance layer plays a water-blocking role, the high-resistance layer is usually arranged on one side far away from the solar chip when the water-blocking film is arranged, the substrate is usually made of a PET (polyethylene terephthalate) material, a PE (polyethylene terephthalate) material, a PP (polypropylene) material or an EVA (ethylene vinyl acetate) material, and the high-resistance layer is made of silicon nitride or aluminum oxide.

The cost of using PET, PE, PP and other materials as the substrate is lower, but the bonding performance between the materials and the adhesive film is not good enough, and when the water-resistant film is arranged, because the substrate is arranged at one side close to the solar chip, the water-resistant layer and the solar chip are layered, so that water vapor can enter the solar chip from the gap between the water-resistant layer and the solar chip to damage the solar chip, and the service life of the solar cell module is shorter.

Disclosure of Invention

Therefore, the invention aims to overcome the defects that the solar cell module is layered due to poor bonding force between the substrate and the adhesive film, water vapor enters the solar cell chip to damage the solar cell chip, and the service life of the solar cell panel is short in the prior art, and provides the solar cell panel and the preparation method thereof.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a solar cell module, includes front bezel, water-blocking film, solar chip and backplate that top-down arranged in proper order, all bond through the glued membrane between front bezel, water-blocking film, solar chip and the backplate, the water-blocking film includes the substrate and deposits and is in high resistance layer on the substrate, high resistance layer is located and is close to one side of solar chip.

Furthermore, a water-blocking film is also arranged between the solar chip and the back plate, and the high-resistance layer of the water-blocking film is positioned at one side close to the solar chip.

Further, the substrate is made of at least one of a PET material, a PE material and a PP material.

The invention also provides a preparation method of the solar cell module, which is characterized by comprising the following steps:

and placing the front plate, the water-blocking film, the solar chip, the back plate and the adhesive film which are sequentially stacked on a mold, and carrying out heating laminating operation on the front plate, the water-blocking film, the solar chip, the back plate and the adhesive film to prepare the laminated solar cell module, wherein the heat conductivity coefficient of the mold is less than 1w/m ∙ k.

Further, the mold is made of a glass fiber and resin laminate composite material.

Further, the heating laminating operation is performed in a laminating machine, the laminating machine includes an upper chamber and a lower chamber, and the heating laminating operation includes the steps of:

placing a mold fixed with a solar cell module raw material in a lower cavity of a laminating machine, simultaneously vacuumizing the upper cavity and the lower cavity of the laminating machine for 2-15min until the vacuum degrees of the upper cavity and the lower cavity of the laminating machine are stabilized at negative atmospheric pressure, simultaneously heating the lower cavity until the temperature is raised to a laminating temperature, after maintaining for a period of time, performing vacuum elimination operation on the upper cavity to perform compression molding on the solar cell module raw material, wherein the laminating temperature is 130-180 ℃, and the temperature holding time is 1-15 min.

Further, the lamination temperature is 135 ℃, 140 ℃, 145 ℃, 150 ℃, 155 ℃, 160 ℃, 165 ℃ or 170 ℃.

Further, the temperature maintaining time is 2min, 4min, 8min, 9min or 12 min.

Further, the vacuum eliminating operation comprises the following steps: the vacuum degree of the upper chamber is stabilized within-60 to-80 kpa within 20s-1min, and the vacuum degree of the upper chamber is stabilized within-5 to-15 kpa within 20s-1 min.

Further, the manufacturing of the vacuum environment comprises the following steps: the vacuum in the upper chamber was reduced to-70 kpa in 30s and to-10 kpa in 30 s.

The technical scheme of the invention has the following advantages:

1. according to the solar cell module provided by the invention, the high-resistance layer is arranged on one side close to the solar cell chip, and the adhesive force between the high-resistance layer and the adhesive film is better than that between the substrate and the adhesive film, so that after lamination, the water-resistant layer and the solar cell chip are connected tightly, the possibility of damage of the solar cell chip caused by water vapor entering the solar cell chip is reduced, the selection of the substrate material can be free from the restriction of the adhesive force, and the reduction of the production cost of the solar cell module is promoted.

2. According to the solar cell module provided by the invention, the water-blocking layer is also arranged between the back plate and the solar chip, so that the water-blocking performance of the whole solar cell module is better, and the service life of the solar cell module is further prolonged.

3. According to the preparation method of the solar cell module, the mold with the heat conductivity coefficient smaller than 1w/m ∙ k is selected, so that the phenomenon that the glue film overflows due to too fast melting caused by too fast temperature rise is prevented, and the finished product qualification rate of the solar cell module is improved.

Drawings

Fig. 1 is a schematic structural view of a solar cell module according to embodiment 1 of the present invention;

fig. 2 is a flowchart of a method for manufacturing a solar cell module according to embodiment 2 of the present invention.

1. A front plate; 2. a water-resistant film; 21. a substrate; 22. a high resistance layer; 3. a solar chip; 4. a back plate; 5. and (5) coating the film.

Detailed Description

The following examples are provided to further understand the present invention, not to limit the scope of the present invention, but to provide the best mode, not to limit the content and the protection scope of the present invention, and any product similar or similar to the present invention, which is obtained by combining the present invention with other prior art features, falls within the protection scope of the present invention.