CN210575972U

CN210575972U - Slicing and tile-stacking assembly

Info

Publication number: CN210575972U
Application number: CN201921827709.3U
Authority: CN
Inventors: 章天瑜; 刘凤敏; 陈水林; 周胡超; 刘亚锋
Original assignee: Risen Energy Co Ltd
Current assignee: Risen Energy Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-05-19
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a subassembly of tiling of cutting into slices, its characterized in that: including multiunit battery cluster (5) and two busbar (6), the both ends of every group battery cluster (5) are connected respectively and are formed parallel structure on two busbar (6), and every group battery cluster (5) is cut apart into polylith battery piece section (4) along every main grid line (2) including battery piece (1) that is equipped with many main grid line (2) and many thin grid line (3), and polylith battery piece section (4) are established ties with the coincide about the step type along main grid line (2) in proper order and are formed battery cluster (5). The slicing and tiling assembly divides the battery plate into a plurality of battery plate slices, and can effectively reduce the mismatch loss of the assembly end, greatly reduce the internal resistance loss of the battery plate during power generation and increase the economic benefit of enterprises by adopting the conductive adhesive lamination arrangement mode.

Description

Slicing and tile-stacking assembly

Technical Field

The utility model relates to a photovoltaic cell piece equipment technical field specifically says a subassembly of tiling of cutting into slices.

Background

Adopt the busbar connection structure between the traditional subassembly battery piece, the inside loss of subassembly has been increased in the use of a large amount of busbars, has reduced subassembly conversion efficiency, and the difference of monolithic battery piece is under series structure simultaneously, and reverse current can increase to the subassembly influence to produce hot spot effect and damage the subassembly and influence whole photovoltaic system's operation even. When the battery piece generates electricity, the battery piece has internal resistance loss, the internal resistance of the battery piece is set to be R, and the current of the battery piece is set to be I when the battery piece generates electricity_mpAnd the number of the battery slices is n, and the internal resistance loss of the assembly is as follows:

from this formula can see that the more the battery piece section quantity n, the internal resistance loss of subassembly is less, but at present all the battery piece is the monoblock generally to make the internal resistance loss of subassembly great, in case battery piece part defect, the monoblock battery piece can not reuse, does not accord with the reduce cost theory.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a cut into a plurality of battery pieces section with the battery piece segmentation, adopt conducting resin lamination arrangement mode can effectively reduce the mismatch loss of subassembly end, internal resistance loss, increase enterprise economic benefits's section shingle assembly when will greatly reduce the battery piece electricity generation.

The technical scheme of the utility model is, provide a section shingle assembly with following structure, including multiunit battery cluster and two busbar, the both ends of every group battery cluster are connected respectively and are formed side by side structure on two busbars, and the polylith battery piece section is cut apart into along every main grid line to the battery piece that every group battery cluster is including being equipped with many main grid lines and many thin grid lines, and polylith battery piece section is established ties along main grid line with the coincide about the step type in proper order and is formed the battery cluster.

The front surface of one side of the battery piece slice is provided with a main grid line, and the back surface of the other side of the battery piece slice is provided with a main grid line.

And the main grid line on one side of the back of the upper battery piece slice and the main grid line on one side of the front of the lower battery piece slice in the two adjacent battery piece slices are overlapped up and down and are fixed in a conductive manner.

And the superposed part is provided with a conductive adhesive layer for bonding.

The battery slice is sliced by laser to form a plurality of battery slice slices.

The battery piece is divided into twelve battery piece slices along each main grid line.

The conductive adhesive layer is heated, bonded, fixed and conductive.

After the structure more than adopting, the utility model has the advantages of it is following: the arrangement mode of the conductive adhesive lamination is adopted, namely the solderless strip design is adopted, so that the arrangement distance and the internal consumption of the battery pieces are greatly reduced; cutting a battery piece into a plurality of parts to manufacture strings by adopting a multi-slice design; the loss of internal current of the assembly is further reduced by adopting a full parallel arrangement structure, the mismatch loss of the assembly end can be effectively reduced by adopting a conductive adhesive lamination arrangement mode, and meanwhile, the larger the number n of the battery slices is, the more the internal resistance loss of the assembly is reduced, the internal resistance loss of the battery slices during power generation can be greatly reduced, and the economic benefit of an enterprise is increased; and partial defective battery pieces are recycled, so that the concept of cost reduction is met, and the output power of the assembly is greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of a battery cell according to the present invention.

Fig. 2 is a schematic structural diagram of the battery slice of the present invention.

Fig. 3 is a schematic diagram of the connection of two battery slice slices of the present invention.

Fig. 4 is a schematic diagram of a battery plate and a bus bar plate of the present invention.

Fig. 5 is an enlarged view of a portion a of fig. 4.

Fig. 6 is an exploded view of the tile stack assembly according to the present invention.

Shown in the figure: 1. the solar cell comprises a cell, 2, main grid lines, 3, fine grid lines, 4, cell slices, 5, cell strings, 6, bus bars, 7 and a conductive adhesive layer.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1-5, the utility model discloses a subassembly of tiling in slices, including multiunit battery cluster 5 and two busbar 6, the both ends of every group battery cluster 5 are connected respectively and are formed side by side structure on two busbar 6, and polylith battery piece section 4 is cut apart into along every main grid line 2 to every group battery cluster 5 including the battery piece 1 that is equipped with many main grid lines 2 and many thin grid lines 3. The plurality of battery slice slices 4 are sequentially overlapped and connected in series in a stepped manner up and down along the main grid line 2 to form a battery string 5.

The front surface of one side of the battery slice 4 is provided with a main grid line 2, and the back surface of the other side is provided with the main grid line 2.

The main grid lines 2 on one side of the back of the upper battery slice 4 and the main grid lines 2 on one side of the front of the lower battery slice 4 in the two adjacent battery slices 4 are vertically overlapped and fixed in an electric conduction mode. The superposition part is provided with a conductive adhesive layer 7 for adhesion, and the conductive adhesive layer 7 is adhered, fixed and conductive after being heated.

The battery piece 1 of the present embodiment is sliced by laser to form a plurality of battery piece slices 4. The battery slice 1 is divided into twelve battery slice slices 4 along each main grid line 2.

When the cell 1 generates electricity, the cell 1 has internal resistance loss, the internal resistance of the cell 1 is set to be R, and the current when the cell 1 generates electricity is set to be I_mpAnd the number of the battery slice slices is 4, and the internal resistance loss of the assembly is as follows:

from this equation, it can be seen that the greater the number n of cell slices 4, the lower the internal resistance loss of the module. Therefore, the utility model discloses the battery piece section of using includes but not limited to 1/2, 1/3, 1/4, 1/5, 1/6, and the section of more quantity, and this embodiment takes 12 sections as an example, adopts neotype many section techniques, cuts into 12 along main grid line 2 directions with a battery piece 1, adopts the conducting resin lamination arrangement mode, can effectively reduce the mismatch loss of subassembly end, and from this formula can be seen at the same time, and here battery piece section quantity n equals 12, and the internal resistance loss of subassembly falls to original 1/144, internal resistance loss when will greatly reduce the battery piece electricity generation, increases enterprise economic benefits. And welding each small piece to manufacture a battery string 5, wherein the conventional assembly is formed by 5-6 battery pieces in a string, the battery pieces are cut into small pieces, 60-72 small-sized pieces are designed for each string to ensure that the overall size of the assembly is not different from that of the conventional assembly, and meanwhile, 10-12 strings are stacked to be arranged together to manufacture the assembly (which is consistent with the conventional assembly), the novel arrangement structure is a full parallel structure, the voltages at two ends of the assembly are the same, and the internal loss generated by current is greatly reduced, so that the line loss of the assembly is reduced, and the output power of the assembly is greatly improved.

As shown in fig. 6, the present invention relates to a method for manufacturing a tile stack assembly:

a. a plurality of battery slice slices 4 are connected in series, and the coated glass 10 is placed on a laminated frame;

b. laying an upper layer of transparent hot-melt adhesive film 11 on coated glass 10, laying a plurality of welded battery piece slices 4 on the upper layer of transparent hot-melt adhesive film 11, and simultaneously connecting the battery pieces at the head end and the tail end by using bus bars 5;

c. laying a bottom hot melt adhesive film 13, covering a back plate 14, and simultaneously enabling the bus bar 5 to penetrate out of an opening 13.1 of the hot melt adhesive film 13 and an opening 14.1 of the back plate 14;

d. putting the stacked semi-finished products into a laminating machine for laminating to finish packaging;

e. after the lamination is completed, the bus bar 5 and the junction box 15 are connected;

f. the junction box 15 is fixed on the back plate 14 by silica gel;

g. an aluminum frame 16 is mounted around the assembly using silica gel.

Claims

1. A slicing and shingle assembly, comprising: including multiunit battery cluster (5) and two busbar (6), the both ends of every group battery cluster (5) are connected respectively and are formed parallel structure on two busbar (6), and every group battery cluster (5) is cut apart into polylith battery piece section (4) along every main grid line (2) including battery piece (1) that is equipped with many main grid line (2) and many thin grid line (3), and polylith battery piece section (4) are established ties with the coincide about the step type along main grid line (2) in proper order and are formed battery cluster (5).

2. A tile stack assembly according to claim 1, wherein: the front surface of one side of the battery piece slice (4) is provided with a main grid line (2), and the back surface of the other side is provided with the main grid line (2).

3. A tile stack assembly according to claim 1 or 2, wherein: the main grid lines (2) on one side of the back of the upper battery piece slice (4) in the two adjacent battery piece slices (4) are vertically overlapped with the main grid lines (2) on one side of the front of the lower battery piece slice (4) and are fixed in an electric conduction mode.

4. A tile stack assembly according to claim 3, wherein: the superposed part is provided with a conductive adhesive layer (7) for adhesion.

5. A tile stack assembly according to claim 1, wherein: the battery slice (1) is sliced by laser to form a plurality of battery slice slices (4).

6. A tile stack assembly according to claim 1 or 5, wherein: the battery piece (1) is divided into twelve battery piece slices (4) along each main grid line (2).

7. The tile stack assembly of claim 4, wherein: the conductive adhesive layer (7) is heated, bonded, fixed and conductive.