CN211507658U

CN211507658U - Novel photovoltaic module

Info

Publication number: CN211507658U
Application number: CN201922453018.8U
Authority: CN
Inventors: 陈燕平; 林俊良; 林金锡; 林金汉
Original assignee: Changzhou Almaden Co Ltd
Current assignee: Changzhou Almaden Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-15
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a novel photovoltaic module, photovoltaic module comprises a plurality of battery pieces series connection of matrix arrangement, the photovoltaic module both ends are equipped with the busbar that is used for interconnecting link, the busbar surface all is equipped with the diffuse reflection structure. The utility model discloses a draw big battery piece apart from + collocation reflecting structure, make full use of the diffuse reflection of light, increase the current output of battery piece, through the diffuse reflection on the busbar at both ends, under the current version of subassembly, can effectually compensate the current low problem on the low side of head and the tail battery piece to promote the electric current of monoblock subassembly, increase the generating efficiency of subassembly.

Description

Novel photovoltaic module

Technical Field

The utility model relates to a solar energy component technical field especially relates to a novel photovoltaic module.

Background

The traditional photovoltaic module sequentially comprises a back plate, a lower packaging adhesive film, a battery piece, an upper packaging adhesive film and a glass plate from the back side to the front side; the gaps of 1mm-4mm are arranged between the cells and between the strings of the cells, the gaps account for 3% -10% of the area of the photovoltaic module, and light energy irradiated to the gaps is difficult to directly absorb or utilize.

At present, the photovoltaic industry covers the reflective sticking films at the gaps of the battery pieces, light energy irradiated to the gaps of the battery pieces is reflected to the glass plate and then reflected to the battery pieces through the glass plate, so that the light energy at the gaps of the battery pieces is fully utilized, but the process is complex, the alignment and lamination process control in the manufacturing process is difficult, and the current assembly factory is difficult to produce in quantity.

At present, the photovoltaic industry adopts a light-reflecting back plate to replace a back plate or adopts light-reflecting white EVA to replace a packaging adhesive film, so that the light energy of the gaps is utilized, and the light energy utilization rate is improved. However, the number of available light sources between the battery pieces is limited, and in addition, the current is limited by the welding positions of the battery pieces at the head and the tail of the assembly and the bus bars, so that the generating efficiency of the assembly cannot be maximized. Current subassembly all is single "cluster" circuit design, when adopting to draw big battery piece apart from + collocation diffuse reflection structure, the reuse of middle battery piece and battery piece clearance light, the electric current grow, but because the busbar is specular reflection structure, the light of head and the tail battery reutilization is less, and the final battery cluster head and tail electric current is the minimum restriction that becomes, influences the generating efficiency of whole subassembly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that current photovoltaic module both ends electric current is low, the utility model provides a novel photovoltaic module, photovoltaic module comprises a plurality of battery pieces series connection that the matrix was arranged, the photovoltaic module both ends are equipped with the busbar that is used for interconnecting link, the busbar surface all is equipped with the diffuse reflection structure.

Preferably, the distance between the battery pieces is 4-9mm, and the diffuse reflection structure is also arranged between the battery pieces. The sun irradiates on the diffuse reflection structure, and then reflects sunlight onto the cell through the diffuse reflection structure, so that the light utilization rate is improved.

Further, the diffuse reflection structure is a reflective film layer. The reflection of light rete can paste on the busbar, utilizes the reflection of light rete, will shine on the solar energy reflection on the reflection of light rete to the battery piece, improves light utilization ratio.

Preferably, the diffuse reflection structure is a tooth-shaped or arc-shaped protrusion, and the protrusions are arranged in an array. The solar light is reflected through the protrusions and reflected to the battery piece, and the light utilization rate is improved.

Further, the cell sheets at two ends of the photovoltaic component are 5mm away from the bus bar.

Has the advantages that: the utility model discloses a draw big battery piece apart from + collocation reflecting structure, make full use of the diffuse reflection of light, increase the current output of battery piece, through the diffuse reflection on the busbar at both ends, under the current version of subassembly, can effectually compensate the current low problem on the low side of head and the tail battery piece to promote the electric current of monoblock subassembly, increase the generating efficiency of subassembly.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view of the tooth-like protrusions of the present invention;

FIG. 3 is a cross-sectional view of the arc-shaped protrusion of the present invention;

1. a battery piece; 2. a bus bar; 3. a photovoltaic module; 4. and (4) protruding.

Detailed Description

Example one

The utility model provides a novel photovoltaic module, photovoltaic module 3 comprises a plurality of battery pieces 1 of matrix arrangement in series, 3 both ends of photovoltaic module are equipped with the busbar 2 that is used for interconnecting link, 2 surfaces of busbar all are equipped with the diffuse reflection structure.

The distance between the battery piece 1 and the battery piece 1 is 4-9mm, and the diffuse reflection structure is also arranged between the battery piece 1 and the battery piece 1. The diffuse reflection structure is a reflective film layer. The cell sheets 1 at the two ends of the photovoltaic module 3 are 25mm away from the bus bar.

Example two

The difference from the above embodiment is that: the diffuse reflection structure is a tooth-shaped or arc-shaped bulge 4, and the bulges 4 are arranged in an array.

The experimental results are as follows:

comparative experiments were performed using two assemblies placed in the same place:

standard assembly the same assembly was used with cell 1 pitch set to 3mm and bus bars 2 without diffuse reflection.

Comparative assembly the same assembly was used, with the cell 1 pitch set to 6mm and the bus bar 2 using a diffuse reflective structure.

The test results are shown in the following chart:

the chart is each scheme contrastive analysis, and the subassembly of equal interval, has the busbar 2 of diffuse reflection performance and compares no busbar 2 of diffuse reflection performance, and power gain 0.23% -0.42%, the utility model discloses the single photovoltaic module 3 power gain 2.22% -2.38% of prior art is compared to the technique.

Claims

1. A novel photovoltaic module is characterized in that: photovoltaic module (3) are established ties by a plurality of battery pieces (1) of matrix arrangement and are constituteed, photovoltaic module (3) both ends are equipped with busbar (2) that are used for interconnecting link, busbar (2) surface all is equipped with diffuse reflection structure.

2. The novel photovoltaic module of claim 1, wherein: the distance between the battery piece (1) and the battery piece (1) is 4-9mm, and the diffuse reflection structure is also arranged between the battery piece (1) and the battery piece (1).

3. A new photovoltaic module according to claim 1 or 2, characterized in that: the diffuse reflection structure is a reflective film layer.

4. A new photovoltaic module according to claim 1 or 2, characterized in that: the diffuse reflection structure is a tooth-shaped or arc-shaped bulge (4), and the bulges (4) are arranged in an array.

5. The novel photovoltaic module according to claim 1, characterized in that the cell plates (1) at both ends of the photovoltaic module (3) are 5mm away from the bus bar (2).