CN201259893Y - Solar cell component - Google Patents

Abstract

The utility model discloses a solar cell assembly, which comprises a frame, a panel, a bottom plate, and a solar cell array arranged in the frame and clamped by the panel and the bottom plate. The solar cell array has 6 columns and 10 rows, and adjacent cells The sheets are electrically connected by welding strips, and the two outermost battery pieces are respectively provided with positive electrode lead-out welding strips and negative electrode lead-out welding strips. The solar cells are metallurgical silicon solar cells. In the solar cell array, continuous A group of 12 pieces is divided into 5 groups. Each group of adjacent connections is provided with bypass lead-out solder strips, and 4 bypass lead-out solder strips are connected to the junction box together with the positive lead-out solder strips and the negative electrode lead-out solder strips. A bypass diode is respectively connected between adjacent lead-out solder strips, thereby forming a structure in which one bypass diode is connected in parallel on each of the five groups of solar cells. The utility model greatly increases the hot spot stability of the components; and can adopt low-cost metallurgical silicon solar cells.

Description

solar cell module

technical field

The utility model relates to a device for converting solar energy into electric energy, in particular to a solar cell assembly.

Background technique

A solar cell is a semiconductor device (or physical battery) that can directly convert sunlight's light energy into electrical energy. Because it does not need water, oil, gas, or fuel when it works, it only needs light energy to generate electricity. It can be called a contemporary clean and pollution-free renewable energy source. It is easy to install and maintain, and has a long service life. It can be unattended. , much favored by people, is a leader in new energy. In recent years, the application of solar energy has become more and more extensive all over the world, especially in the field of communication. Solar power supply systems are gradually replacing some traditional power supply equipment and are becoming more and more widely used.

The solar cell module is composed of multiple solar cells. Usually, the cells are arranged in 10 rows and 6 columns. Connected in series, the lead-out ribbons at both ends are connected to the junction box. During use, due to the projection of flying birds and leaves, etc., shadows will be produced on the surface of the solar cell. At this time, the corresponding cell will not only fail to emit electric energy, but will turn into a resistance, consume the electric energy in the circuit and generate heat. This is the so-called hot spot effect. The hot spot effect will lead to a decrease in the power generation efficiency of the loop, which in turn will cause damage to the cells. In order to solve this problem, Schottky diodes that are bypassed are usually connected in parallel in the series circuit of the battery slices. In the prior art, the conventional connection method is to set 3 bypass diodes in a junction box. One end of the junction box leads two intermediate electrodes into the junction box, and the bypass diodes are connected between them and between the lead-out solder strips of the batteries at both ends. In this way, in the case of hot spots, the bypass diodes are turned on, and a string (20) of cells is short-circuited to reduce its impact on the solar cell module. This structure can avoid damage to the battery sheet in the case of hot spots, but its stability in the case of hot spots is average, especially when low-cost metallurgical silicon chips are used as solar cells, the stability of the hot spots is even worse. This limits the application of metallurgical silicon solar cell chips.

Contents of the invention

The purpose of the utility model is to provide a solar cell assembly, which can improve the stability of the solar cell assembly in the case of hot spot through the improvement of the structure.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a solar cell assembly, including a frame, a panel, a bottom plate, and a solar cell array arranged in the frame and clamped by the panel and the bottom plate, the solar cell array There are 6 columns and 10 rows, and the adjacent cells are electrically connected by welding strips. The two outermost cells are respectively provided with positive and negative lead-out welding strips. The solar cells are metallurgical silicon solar cells. In the above-mentioned solar cell array, 12 consecutive pieces are divided into 5 groups, and each group of adjacent joints is provided with bypass lead-out solder strips, and 4 bypass lead-out solder strips are connected with the positive lead-out solder strips and the negative electrode lead-out ribbons. The solder strips are connected together into the junction box, and a bypass diode is respectively connected between adjacent lead-out solder strips, thereby forming a structure in which one of the bypass diodes is connected in parallel on each of the five groups of solar cells.

Due to the use of the above technical solutions, the utility model has the following advantages compared with the prior art:

1. Because the utility model divides the solar cells into 5 groups, sets 6 lead-out soldering strips, and connects 5 bypass diodes, so that the bypass cells of each diode are reduced from 20 to 12, greatly Increased hot spot stability of components.

2. The utility model can adopt low-cost metallurgical silicon solar cells, and the module size, appearance and installation method are the same as the existing ordinary solar cell components, thus greatly reducing the application cost of the solar cell components.

Description of drawings

Fig. 1 is a schematic diagram of the connection structure of the cell assembly of the first embodiment of the utility model;

Fig. 2 is a schematic diagram of the electrical connection of the first embodiment.

Among them: 1. Frame; 2. Solar cell array; 3. Ribbon; 4. Ribbon leading out of positive electrode; 5. Ribbon leading out of negative pole; 6. Ribbon leading out of bypass.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment 1: Referring to the accompanying drawings 1 and 2, a solar cell assembly includes a frame 1, a panel, a bottom plate, and a solar cell array 2 disposed in the frame and sandwiched by the panel and the bottom plate. The array is 6 columns and 10 rows, and the adjacent cells are electrically connected by ribbons 3. The two outermost cells are respectively equipped with positive electrode lead-out solder ribbons 4 and negative electrode lead-out solder ribbons 5. The solar cells are metallurgical silicon solar cells. In the solar cell array 2, 12 consecutive pieces are divided into 5 groups, each group of adjacent joints is provided with bypass lead-out soldering strips 6, and 4 bypass-leading soldering strips 6 are connected to all the solar cells. The positive lead-out soldering strips 4 and the negative-electrode lead-out soldering strips 5 are connected together to the junction box (not shown in the figure), and a bypass diode is respectively connected between adjacent lead-out soldering strips, thereby forming a parallel connection on five groups of solar cells. One of the bypass diode structures.

Claims (1)

1. A solar cell assembly, comprising a frame (1), a panel, a base plate, and a solar cell array (2) that is clamped by the panel and the base plate within the frame, and the solar cell array (2) is 6 rows 10 rows, adjacent cells are electrically connected by ribbons (3), and the two outermost cells are respectively provided with positive electrode lead-out solder ribbons (4) and negative electrode lead-out solder ribbons (5), characterized in that: the solar energy The cells are metallurgical silicon solar cells. In the solar cell array (2), 12 consecutive cells are divided into 5 groups, and each group of adjacent connections is provided with a bypass lead-out solder strip (6), 4 bypass lead-out ribbons (6) are connected to the junction box together with the positive electrode lead-out ribbons (4) and negative electrode lead-out ribbons (5), and a bypass diode is respectively connected between adjacent lead-out solder ribbons, thus A structure in which one bypass diode is connected in parallel on five groups of solar cells is formed.

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