CN211507656U

CN211507656U - Photovoltaic module optimizes structure

Info

Publication number: CN211507656U
Application number: CN201921887724.7U
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: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-09-15
Anticipated expiration: 2029-11-05

Abstract

The utility model relates to a photovoltaic module's optimization structure, including a plurality of groups photovoltaic module, every group photovoltaic module comprises the battery piece series connection that the matrix was arranged, and adjacent two sets ofly around distance between the photovoltaic module is X, adjacent two sets ofly around lie in the rear in the photovoltaic module bottom has all to be connected with diode one between the positive negative pole of Y row battery piece, installs the battery piece row number Y of diode one and adjacent two sets of distance X between the photovoltaic module is Y ═ round (-6.36X + 11.09). The utility model discloses according to subassembly design interval, select the row number of best installation diode one, not only the interval reduces and has improved land use rate but also reduced and sheltered from the influence to the subassembly generated energy.

Description

Photovoltaic module optimizes structure

Technical Field

The utility model relates to a solar energy component, in particular to solar module's installation is arranged.

Background

The development of new energy economy is the historical trend and the inevitable choice in the world nowadays, photovoltaic power generation is an important new energy, and a photovoltaic module is a core component of a photovoltaic power generation system. In the operation process of the components, light loss and power loss are accompanied, the two types of loss are reduced, and the power generation amount of a power station can be improved. In order to prevent the photovoltaic module from being damaged due to the hot spot effect, a bypass diode I is connected in parallel after 20 (60-cell series assembly) or 24 (72-cell series assembly) cells of the photovoltaic module are connected in series, and when the hot spot effect occurs in a cell and power cannot be generated, the diodes are in bypass action together, so that current generated by other cell strings flows out of the diode I, and the photovoltaic module can continue to generate power without generating a situation that a power generation circuit is not communicated due to the problem of a certain cell. However, even if the battery string where the shielded battery piece is located is bypassed, the shielded battery piece still generates heat, and the service life of the battery piece is greatly reduced. According to the photovoltaic design standard, the photovoltaic module interval design needs to satisfy that the front row subassembly shadow does not lead to the fact the back row subassembly to shelter from between 9 am to 3 pm in the winter solstice day, nevertheless still can exist early and evening and shelter from, if when the less subassembly interval that needs to reduce in place, then the front row is more to sheltering from of back row, and the back row subassembly can be because of sheltering from and produce hot spot effect, subassembly power decline to influence the subassembly generated energy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a reduce to shelter from the influence to the generated energy, the utility model provides a photovoltaic module's optimization structure, including a plurality of groups photovoltaic module, every group photovoltaic module is established ties by the battery piece that the matrix was arranged and is constituteed, and adjacent two sets of around distance between the photovoltaic module is X, and adjacent two sets of around lie in the rear in the photovoltaic module all be connected with diode one, installation between the positive negative pole that there is Y row battery piece in the photovoltaic module bottom the battery piece row number Y of diode one is adjacent two sets of distance X between the photovoltaic module is Y ═ round (-6.36X + 11.09).

Preferably, the cells arranged in a matrix in each group of the photovoltaic modules are positioned between a plurality of cells in the same column or the same row and are connected in series to form a cell group, and two adjacent cell groups are connected in series. The battery pack may be arranged laterally or vertically.

Furthermore, a second diode is connected between two adjacent groups of the battery packs in parallel.

Has the advantages that: the utility model discloses according to subassembly design interval, select the row number of best installation diode one, not only the interval reduces and has improved land use rate but also reduced and sheltered from the influence to the subassembly generated energy.

Drawings

Fig. 1 is a schematic view of the vertical arrangement of the battery pack of the present invention;

fig. 2 is a schematic view of the horizontal row installation of the battery pack of the present invention;

fig. 3 is a schematic view of the space installation of the photovoltaic module of the present invention;

fig. 4 is a schematic view of the transverse installation of the battery pack of the present invention;

fig. 5 is a schematic view of the vertical installation of the battery pack of the present invention;

1. a battery piece; 2. a first diode; 3. a second diode; 4. photovoltaic module

Detailed Description

Example one

As shown in the figure, the optimized structure of the photovoltaic module comprises a plurality of groups of photovoltaic modules 4, each group of photovoltaic modules 4 is formed by connecting cell pieces 1 which are arranged in a matrix in series, the distance between two adjacent groups of photovoltaic modules 4 is X, diodes 2 are connected between the positive and negative electrodes of Y rows of cell pieces 1 at the bottom of the photovoltaic module 4 positioned at the rear in the two adjacent groups of photovoltaic modules 4, and the relation between the row number Y of the cell pieces 1 for mounting the diodes 2 and the distance X between the two adjacent groups of photovoltaic modules 4 is Y-round (-6.36X + 11.09). As shown in fig. 1, in this embodiment, the cells 1 are vertically arranged, for example, the number of the cells 1 in the same row is 6, the number of the cells 1 in the same row is 8, and two rows of the cells 1 are connected in parallel with a diode i 2 at the bottom.

The cell pieces 1 arranged in a matrix in each group of the photovoltaic modules 4 are positioned among a plurality of cell pieces 1 in the same column and connected in series to form a cell group, and two adjacent cell groups are connected in series. And a second diode 3 is connected in parallel between the two adjacent groups of battery packs.

Example two

The difference from the embodiment is that: as shown in fig. 2, in the present embodiment, the battery pieces 1 are arranged in the transverse direction as an example, the number of the battery pieces 1 in the same row is 6, the number of the battery pieces 1 in the same row is 9, and two rows of the battery pieces 1 are connected in parallel to each other by the diodes one 2. The cell pieces 1 arranged in a matrix in each group of the photovoltaic modules 4 are positioned among the plurality of cell pieces 1 in the same row and are connected in series to form a cell group.

Effect verification: the conventional assembly and the optimized assembly are both SEAC60-310W, the generated energy of the two types of assemblies is compared through experiments, 20 groups of conventional assemblies and optimized assemblies are respectively connected with inverters and electric meters of the same type, the assemblies are installed in a south direction, the inclination angle is 23 degrees, a grid-connected system is built, and the generated energy is recorded by the electric meters. The distance between the two groups of photovoltaic modules 4 is 1.5m, the floor area is about 31 square meters, the calculation is carried out according to a formula, Y is 1.5 x-6.36 +11.09 is 1.55, the whole is 2, as shown in fig. 1, so that the number of the rows for mounting the diodes one 2 is two, the diodes are mounted from the bottom, and the diodes one 2 in the two rows at the bottom are connected in parallel.

The results of the experiments are shown in the following table:

loading amount: the power of each component is 310W, the whole system has 20 groups of components, and the loading amount is 310 × 20/1000 ═ 6.2 KWp.

As can be seen from the table above, the power generation amount of the optimized component at the same interval is higher than that of the conventional component, and the gain is 12.4%, which shows that the influence of shielding on the power generation amount can be reduced when the optimized component is applied to the array. Experiments fully show that the optimization assembly can improve the land utilization rate and the power generation capacity of the array.

Claims

1. An optimized structure of a photovoltaic module is characterized in that: the photovoltaic module comprises a plurality of groups of photovoltaic modules (4), each group of photovoltaic modules (4) is formed by connecting cell pieces (1) which are arranged in a matrix in series, the distance between the two groups of photovoltaic modules (4) which are adjacent in the front and back is X, diodes (2) are connected between the positive and negative electrodes of Y rows of cell pieces (1) at the bottom of the photovoltaic modules (4) which are adjacent in the front and back, and the relation between the row number Y of the cell pieces (1) of the diodes (2) and the distance X between the two groups of photovoltaic modules (4) is Y-round (-6.36X + 11.09).

2. The optimized structure of photovoltaic modules according to claim 1, wherein: the cell pieces (1) arranged in a matrix in each group of photovoltaic modules (4) are positioned among a plurality of cell pieces (1) in the same column or the same row and are connected in series to form a cell group, and two adjacent cell groups are connected in series.

3. The optimized structure of photovoltaic modules according to claim 2, wherein: and a second diode (3) is connected in parallel between the two adjacent groups of battery packs.