CN206259363U - A kind of many efficient components of main grid of low string resistance - Google Patents

Abstract

The utility model relates to a low-series-resistance multi-busbar high-efficiency component, which comprises a battery layer component and an aluminum frame arranged around the battery layer component. film, solar cells, the second layer of hot-melt adhesive film and the back plate, the surrounding edges of the solar cells are respectively bonded with insulating strips by EVA, and the insulating strips are located on the first layer of hot-melt adhesive film between solar cells. The solar cell assembly of the present utility model is provided with five busbar solar cells, the first layer of hot melt adhesive film is EVA with high light transmittance, the overall series resistance of the assembly is reduced, and the sunlight irradiated on the surface of the solar cell is increased. The output power and photoelectric conversion efficiency of the module are improved. According to tests, increasing the number of grid lines in the present application can significantly increase the conversion efficiency of the battery sheet by more than 0.2%.

Description

A low-series-resistance multi-busbar high-efficiency component

technical field

The utility model relates to a solar module, in particular to a low serial resistance multi-busbar high-efficiency module, which belongs to the technical field of solar cells.

Background technique

With the depletion of fossil energy and the serious pollution of the earth's environment, more and more attention has been paid to renewable energy and various green energy. Solar energy is abundant and widely distributed, and it is the renewable energy with the greatest development potential. With the increasingly prominent problems of global energy shortage and environmental pollution, solar photovoltaic power generation has become an emerging industry that is widely concerned and focused on development because of its cleanness, safety, convenience, and high efficiency. After extensive research, it is found that reducing the series resistance plays an important role in improving the power of the module.

It is generally believed that the power loss due to series resistance is very small in the whole module. Therefore, for a long time, the series resistance of crystalline silicon solar cell modules has not attracted enough attention. However, with the continuous improvement of solar cell efficiency and the development of solar cell module production technology, it is of great significance to reduce the loss of series resistance.

Utility model content

The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a low-series resistance multi-busbar high-efficiency component to improve the current relatively high series resistance of solar cell components and improve the output power and photoelectric conversion of the components. efficiency.

In order to solve the above technical problems, the utility model provides a low-series-resistance multi-busbar high-efficiency component, including a battery layer component and an aluminum frame arranged around the battery layer component. The battery layer component is tempered glass, The first layer of hot-melt adhesive film, the solar battery sheet, the second layer of hot-melt adhesive film and the back plate, the surrounding edges of the solar battery sheet are respectively bonded with insulating strips by EVA, and the insulating strips are located on the first layer of the solar cell sheet. between a layer of hot melt adhesive film and the solar cells; the aluminum frame includes a battery layer component clamping part, a bottom support part and a supporting connection part, the side of the battery layer component clamping part is provided with a rectangular opening, the The support connection part is a hollow structure, and the battery layer assembly clamping part and the bottom support part are connected as a whole through the support connection part of the hollow structure, and the periphery of the battery layer assembly is plugged into the rectangular opening provided on the side of the aluminum frame.

The utility model further defines the technical solution, the aforementioned low-series-resistance multi-busbar high-efficiency component, the solar cells are formed by connecting several five-busbar battery cells in a matrix.

In the aforementioned high-efficiency low-series-resistance multi-busbar module, the backplane is a resin plate or toughened glass; the toughened glass is low-iron ultra-clear coated toughened glass.

In the low-series-resistance multi-busbar high-efficiency component mentioned above, the insulating strip is made of polyimide film; the connection between the battery layer component and the aluminum frame is provided with a single-component silica gel buffer layer.

Beneficial effects of the utility model: the solar cell module of the utility model is provided with five busbar solar cells, the first layer of hot-melt adhesive film is EVA with high light transmittance, the overall series resistance of the module is reduced, and the sun is irradiated The increase of sunlight on the surface of the cell increases the output power and photoelectric conversion efficiency of the module. According to tests, increasing the number of grid lines in this application can significantly increase the conversion efficiency of the cell by more than 0.2%.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic cross-sectional view of the utility model.

detailed description

Example 1

A low-series-resistance multi-busbar high-efficiency assembly provided in this embodiment has a structure as shown in Figure 1, including a battery layer assembly 1, an aluminum frame 2 arranged around the battery layer assembly, and a battery box 4, the battery layer assembly and the aluminum frame There is a single-component silica gel buffer layer 3 at the connection, and the battery layer components are low-iron ultra-white coated tempered glass 5, the first layer of hot-melt adhesive film 6, solar cells 7, and the second layer of hot-melt adhesive. film 8 and resin flat back plate 9, the solar cells are formed by connecting several five-busbar battery cells in a matrix; the surrounding edges of the solar cells are made of polyimide films bonded with EVA respectively Insulation strip, the insulation strip is located between the first layer of hot melt adhesive film and the solar cells; the aluminum frame includes the battery layer component clamping part, the bottom support part and the supporting connection part, and the side of the battery layer component clamping part is provided with a rectangular The opening, the support connection part is a hollow structure, the battery layer assembly clamping part and the bottom support part are connected as a whole through the support connection part of the hollow structure, and the battery layer assembly is inserted around the rectangular opening on the side of the aluminum frame.

The manufacturing method of the five-busbar solar cell module in this embodiment: front-side welding of five-busbar solar cells-serial welding-stacking-vacuum lamination packaging and curing-framing-junction box assembly-power testing-final inspection-packaging. The overall series resistance of the module is reduced, and the sunlight irradiated on the surface of the solar cell increases, which improves the output power and photoelectric transfer efficiency of the module.

In addition to the above embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (5)

1. A low-series-resistance multi-busbar high-efficiency assembly, comprising a battery layer assembly and an aluminum frame arranged around the battery layer assembly, characterized in that: the battery layer assembly is sequentially composed of tempered glass, the first layer of thermal Melt adhesive film, solar cell sheet, second layer of hot melt adhesive film and back plate, the surrounding edges of the solar cell sheet are respectively bonded with insulating strips by EVA, and the insulating strips are located on the first layer of hot-melt adhesive film. Between the adhesive film and the solar cells; the aluminum frame includes a battery layer component clamping part, a bottom support part and a supporting connection part, the side of the battery layer component clamping part is provided with a rectangular opening, and the supporting connecting part is The hollow structure connects the clamping part of the battery layer assembly and the bottom support part as a whole through the supporting connection part of the hollow structure, and the four sides of the battery layer assembly are plugged into the rectangular opening provided on the side of the aluminum frame. 2. The low-series-resistance multi-busbar high-efficiency module according to claim 1, wherein the solar cells are formed by connecting several five-busbar battery cells in a matrix. 3. The high-efficiency low-series-resistance multi-busbar module according to claim 1, characterized in that: the backplane is a resin plate or tempered glass; the tempered glass is low-iron ultra-white coated tempered glass. 4. The high-efficiency low-series-resistance multi-busbar component according to claim 1, wherein the insulating strip is made of polyimide film. 5. The low-series-resistance multi-busbar high-efficiency module according to claim 1, wherein a single-component silica gel buffer layer is provided at the connection between the battery layer module and the aluminum frame.