A mesh component with interlocking borders

Abstract

This utility model provides a grid assembly with a ring-shaped frame, belonging to the field of photovoltaic module technology. It solves the problems of inconvenient connection and insufficient compactness in existing ring-shaped frame grid assemblies. This ring-shaped frame grid assembly includes an EVA board, with solar cells laid on the front side of the EVA board in three rows and nine columns. The top row's left-side solar cells are connected to busbar one; the top two solar cells in the eighth and ninth columns are connected to busbar three; a 20±1mm gap is left between the solar cells in the eighth and ninth columns, and busbar four is installed in this gap to connect the solar cells in the eighth and ninth columns; adjacent solar cells in the top row are connected to busbar two; solar cells in the middle row are connected to interconnecting strip three; and adjacent solar cells in the bottom row are connected to busbar five. This utility model offers convenient connection and a compact structure.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic module technology, and specifically relates to a grid module with a ring-shaped frame. Background Technology

[0002] Photovoltaics is short for solar photovoltaic power generation system. It is a new type of power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy. It can be operated independently or connected to the grid.

[0003] There are many types of photovoltaic modules, including the ring-frame grid module. The existing ring-frame grid module has two sets of busbars. The first set of busbars connects a group of cells on one side of the grid, and the second set connects the other cells. Then the first set of busbars goes around the outer edge of the cells and connects again. The second set of busbars connects the two sides of the cells to the connection point of the first set of busbars. This connection is not convenient and the structure is not compact enough. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a mesh assembly for a ring-shaped frame in which the end battery cell and the second group of battery cells are directly connected together.

[0005] The objective of this utility model can be achieved through the following technical solution: A mesh component with a ring-shaped frame includes an EVA board. The front side of the EVA board is covered with battery cells, which are arranged in three rows and nine columns. A busbar 1 is connected to the battery cells on the left side of the top row. Two battery cells in the top row of the eighth and ninth columns are connected to a busbar 3. A gap of 20±1mm is left between the battery cells in the eighth and ninth columns, and a busbar 4 is installed in this gap to connect the battery cells in the eighth and ninth columns. A busbar 2 is installed on two adjacent battery cells in the other top row. An interconnecting strip 3 is installed on the battery cells in the middle row. A busbar 5 is connected to two adjacent battery cells in the bottom row.

[0006] The mesh assembly of this ring-shaped frame, through the cooperation of a 20±1mm gap and busbar four, can directly connect the end battery cell and the second group of battery cells together, and then extend the outer edge to the connection point, making the connection convenient and the structure compact.

[0007] In the aforementioned mesh assembly with a snap-fit ​​frame, busbar 1, busbar 2, and busbar 3 are connected to the battery cells via interconnecting strip 1, and busbar 5 is connected to the battery cells via interconnecting strip 2. Interconnecting strip 1 facilitates the connection of busbar 1, busbar 2, and busbar 3 to the battery cells; interconnecting strip 2 facilitates the connection of busbar 5 to the battery cells.

[0008] In the aforementioned mesh assembly with a ring-shaped frame, high-temperature tape is used to cover the space between two adjacent battery cells in the top and bottom rows. The high-temperature tape measures 8*25mm. A nameplate is mounted on the busbar four. The nameplate provides convenient information about the mesh assembly.

[0009] In the aforementioned mesh assembly with a ring-shaped frame, the distance between columns of battery cells is 1.5 ± 0.3 mm, and the distance between rows of battery cells is 3 ± 1 mm. These distances between the battery cells prevent collisions.

[0010] In the aforementioned mesh assembly with an interlocking frame, the solar cell comprises a coated glass layer, a first adhesive film layer, a solar cell substrate, a second adhesive film layer, and a semi-tempered glass layer, which are sequentially stacked from front to back. The coated glass layer, the first adhesive film layer, the solar cell substrate, the second adhesive film layer, and the semi-tempered glass layer can be assembled through the cooperation of the first and second adhesive film layers.

[0011] In the aforementioned mesh assembly with a ring-shaped frame, the EVA board includes a lower EVA board, a middle EVA board, and an upper EVA board. The lower EVA board, middle EVA board, and upper EVA board are stacked sequentially from back to front. Titanium dioxide filler is added inside the upper EVA board. The density of the upper EVA board is 60-80 kg / m³, the density of the middle EVA board is 30-50 kg / m³, and the density of the lower EVA board is 50-70 kg / m³. By adopting a three-layer density gradient design, the EVA board can absorb external impact forces. The titanium dioxide makes the upper EVA board white, improving the light absorption rate between the solar cells, and the power gain of the single-sided module is 1-3W.

[0012] Compared with existing technologies, the mesh assembly of this ring-shaped frame, through the use of a gap of 20±1mm and the cooperation of busbar four, can directly connect the end battery cell and the second group of battery cells together, and then the outer edge to the connection point, which is convenient and compact. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a utility model Figure 1 A magnified view of A in the middle.

[0015] Figure 3 This is a utility model Figure 1 A magnified view of B in the middle.

[0016] Figure 4 This is a schematic diagram of the battery cell structure of this utility model.

[0017] Figure 5 This is an exploded view of the battery cell structure of this utility model.

[0018] Figure 6 This is an exploded view of the EVA board structure of this utility model.

[0019] In the diagram: 1. EVA board; 101. EVA lower board; 102. EVA middle board; 103. EVA upper board; 2. Busbar 1; 3. Busbar 2; 4. Interconnect strip 1; 5. Battery cell; 51. Coated glass layer; 52. Battery cell substrate; 53. Semi-tempered glass layer; 54. Adhesive film layer 1; 55. Adhesive film layer 2; 6. Busbar 3; 7. Busbar 4; 8. Nameplate; 9. Busbar 5; 10. Interconnect strip 2; 11. Interconnect strip 3; 12. High-temperature tape. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the mesh assembly of this ring-shaped frame includes an EVA board 1. Battery cells 5 are laid on the front side of the EVA board 1. The number of battery cells 5 is three rows and nine columns. A busbar 1 2 is connected to the battery cell 5 on the left side of the top row. The two battery cells 5 in the top row of the eighth and ninth columns are connected to a busbar 3 6. A gap of 20±1mm is left between the battery cells 5 in the eighth and ninth columns, and a busbar 4 7 is installed in this gap. The busbar 4 7 is used to connect the battery cells 5 in the eighth and ninth columns. A busbar 2 3 is installed on the two adjacent battery cells 5 in the top row. An interconnecting strip 3 11 is installed on the battery cells 5 in the middle row. A busbar 5 9 is connected to the two adjacent battery cells 5 in the bottom row.

[0022] In actual manufacturing, busbar 1 2, busbar 2 3 and busbar 3 6 are connected to the battery cell 5 via interconnecting strip 1 4, and busbar 5 9 is connected to the battery cell 5 via interconnecting strip 2 10.

[0023] High-temperature tape 12, measuring 8*25mm, is used to cover two adjacent battery cells 5 in the top and bottom rows. A nameplate 8 is installed on the busbar 4 7. The distance between columns of battery cells 5 is 1.5±0.3mm, and the distance between rows of battery cells 5 is 3±1mm.

[0024] The solar cell 5 includes a coated glass layer 51, an encapsulant layer 54, a solar cell substrate 52, an encapsulant layer 55, and a semi-tempered glass layer 53, which are stacked sequentially from front to back. The EVA board 1 includes a lower EVA board 101, a middle EVA board 102, and an upper EVA board 103, which are stacked sequentially from back to front. The upper EVA board 103 contains titanium dioxide filler. The semi-tempered glass filler 53 is installed on the upper EVA board filler 103.

[0025] In use, by using a gap of 20±1mm and the busbar 4 7, the end battery cell 5 and the second group of battery cells 5 can be directly connected together, and then the outer edge extends to the connection point, making the connection convenient and the structure compact.

[0026] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A mesh assembly for a ring-shaped frame, comprising an EVA board (1), characterized in that: The front side of the EVA board (1) is covered with battery cells (5). The number of battery cells (5) is three rows and nine columns. The battery cell (5) on the left side of the top row is connected to bus bar one (2). The two battery cells (5) in the top row of the eighth and ninth columns are connected to bus bar three (6). There is a gap of 20±1mm between the battery cells (5) in the eighth and ninth columns, and bus bar four (7) is installed in the gap. Bus bar four (7) is used to connect the battery cells (5) in the eighth and ninth columns. The two adjacent battery cells (5) in the other top row are connected to bus bar two (3). The battery cells (5) in the middle row are connected to interconnection bar three (11). The two adjacent battery cells (5) in the bottom row are connected to bus bar five (9).

2. The mesh component for a ring-shaped frame according to claim 1, characterized in that: Busbar 1 (2), busbar 2 (3) and busbar 3 (6) are connected to the battery cell (5) via interconnecting bar 1 (4), and busbar 5 (9) is connected to the battery cell (5) via interconnecting bar 2 (10).

3. The mesh component for a ring-shaped frame according to claim 1, characterized in that: High-temperature tape (12) is used to cover the two adjacent battery cells (5) in the top row and bottom row. The high-temperature tape (12) is 8*25mm in size. A nameplate (8) is installed on the busbar four (7).

4. The mesh component for a ring-shaped frame according to claim 1, characterized in that: The distance between columns of the battery cells (5) is 1.5±0.3mm, and the distance between rows of the battery cells (5) is 3±1mm.

5. A mesh component for a ring-shaped frame according to claim 1, characterized in that: The battery cell (5) includes a coated glass layer (51), a first adhesive film layer (54), a battery cell substrate (52), a second adhesive film layer (55), and a semi-tempered glass layer (53), which are stacked sequentially from front to back.

6. A mesh component for a ring-shaped frame according to claim 1, characterized in that: The EVA board (1) includes an EVA lower board (101), an EVA middle board (102) and an EVA upper board (103). The EVA lower board (101), EVA middle board (102) and EVA upper board (103) are laid in layers from back to front. Titanium dioxide filler is added inside the EVA upper board (103).

Images