CN210110811U - Novel high-efficient lamination photovoltaic module - Google Patents
Novel high-efficient lamination photovoltaic module Download PDFInfo
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- CN210110811U CN210110811U CN201921003531.0U CN201921003531U CN210110811U CN 210110811 U CN210110811 U CN 210110811U CN 201921003531 U CN201921003531 U CN 201921003531U CN 210110811 U CN210110811 U CN 210110811U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The utility model discloses a novel high-efficiency laminated photovoltaic module, which comprises at least one cell body, a back main grid line and a front main grid line, the back main grid line is positioned in the middle of the cell body and distributed along the width direction of the cell body, the front main grid lines are respectively positioned at the left end and the right end of the cell body and are distributed along the width direction of the cell body, the cell slice body is respectively cut into a first cell slice, a second cell slice, a third cell slice and a fourth cell slice along the axis direction of the back main grid line and the axis direction vertical to the back main grid line, first battery piece section, second battery piece section, third battery piece section and fourth battery piece section all have back main grid line and positive main grid line, the utility model provides a with low costs, the subassembly internal loss is low and the high novel high-efficient lamination photovoltaic module of subassembly conversion efficiency.
Description
Technical Field
The utility model relates to a photovoltaic power generation field especially relates to a novel high-efficient lamination photovoltaic module.
Background
The photovoltaic power generation process is simple, no consumption, zero emission and no environmental pollution. Under the background of increasingly serious energy crisis and environmental pollution, photovoltaic power generation is increasingly favored by governments of various countries as green and environment-friendly renewable energy, the traditional photovoltaic module cell slice is provided with a plurality of main grid lines, and the cell slice are connected by welding through interconnection strips, so that the light receiving area of the cell slice is reduced, the cost is increased, the internal loss of the module is increased, and the conversion efficiency of the module is reduced, according to the prior art, a tiled photovoltaic module and a manufacturing method are disclosed on a national intellectual property office website, the application number is 2018111605152, the cell slice body is longitudinally cut into more than two equal parts, the cell slice and the cell slice are connected by conductive adhesive, because the cell slice is formed by longitudinally cutting the cell slice body, the conductive adhesive is distributed along the length direction of the cell slice body, the consumption of the conductive adhesive is large, the light receiving area of the cell slice is reduced, and the use of a large amount of conductive adhesive not only increases the cost, but also increases the internal loss of the assembly, and reduces the conversion efficiency of the assembly.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: overcome above prior art's defect, provide a with low costs, the subassembly internal loss is low and novel high-efficient lamination photovoltaic module that subassembly conversion efficiency is high.
The utility model adopts the technical proposal that: a novel high-efficiency laminated photovoltaic assembly comprises at least one battery piece body, a back main grid line and a front main grid line, wherein the back main grid line is positioned in the middle of the battery piece body, the back main grid line is distributed along the width direction of the battery piece body, the front main grid line is respectively positioned at the left end and the right end of the battery piece body, the front main grid line is distributed along the width direction of the battery piece body, the battery piece body is respectively cut into a first battery piece slice, a second battery piece slice, a third battery piece slice and a fourth battery piece slice along the axis direction of the back main grid line and the axis direction vertical to the back main grid line, the first battery piece slice, the second battery piece slice, the third battery piece slice and the fourth battery piece slice are respectively provided with the back main grid line and the front main grid line, the first battery piece slice and the second battery piece are connected in series to form a first group, the third battery piece slice and the fourth battery piece slice are connected in series to form a second group of strings, the first group of strings and the second group of strings are connected in parallel, the first group of strings and the second group of strings are identical in structure, and conductive adhesive is arranged between the back main grid line of the first battery piece slice and the front main grid line of the second battery piece slice.
After the structure more than adopting, compared with the prior art, the utility model has the following advantage: adopt the section technique to cut into 1/4 pieces with the battery piece body of grid line redesign, according to the design technology of tiling, the battery piece after will cutting is through the conductive adhesive heating and is linked into the cluster, connects simply, heats the conductive adhesive and just can realize being connected of back main grid line and positive main grid line, has effectively enlarged battery piece body photic area like this, promotes the average generating density of subassembly. In addition, the welding strip is replaced by the conductive adhesive, the shielding of the welding strip is avoided, the power of the assembly is promoted, the output power is effectively promoted, the cost is low, the internal loss of the assembly is low, the conversion efficiency of the assembly is high, the battery piece body is longitudinally cut once and transversely cut once, the conductive adhesive used for connecting the first battery piece slice and the second battery piece slice is half less than that of the prior art, the adhesion part area of the conductive adhesive is half of the length, the fragment rate of the battery piece can be reduced, the total area of the adhesion part of the conductive adhesive is half of the area of the adhesion part of the prior art, the waste area of the battery piece is reduced, the consumption of the conductive adhesive is reduced, the cost is low, the internal loss of the assembly is low, the conversion efficiency of the assembly is high, the back main grid line is positioned in the middle position of the battery piece body, the back main grid line is distributed along the width direction of, the front main grid lines are distributed along the width direction of the battery piece body, so that the first battery piece slice, the second battery piece slice, the third battery piece slice and the fourth battery piece slice all need the back main grid lines and the front main grid lines, the back main grid lines and the front main grid lines are respectively located on two sides of the first battery piece slice, the first battery piece slice and the second battery piece slice are connected and need to rotate 180 degrees for the second battery piece slice, and the back main grid lines of the first battery piece slice are connected with the front main grid lines of the second battery piece slice.
Preferably, the first battery slice, the second battery slice, the third battery slice and the fourth battery slice form a Chinese character tian shape, and the internal loss of the assembly is low.
Preferably, the battery pack further comprises a bus bar, and the front main grid lines of the first battery piece slice and the front main grid lines of the third battery piece slice are connected in parallel through the bus bar, so that the use of the bus bar can be reduced.
Preferably, the first battery slice and the second battery slice are connected in series in a shingled manner, so that the internal loss of the assembly is low.
Preferably, the battery piece bodies are connected in series, so that damage to the assembly caused by hot spot effect is reduced, and current mismatch loss of the battery piece is reduced.
Preferably, the cell bodies are connected in series through the bus bars, so that the use of the bus bars can be reduced.
Preferably, the cell bodies are connected in series in a shingled manner, so that the internal loss of the module is reduced, the conversion efficiency of the module is improved, and the power generation available area wasted by the module is reduced.
Preferably, the first battery slice, the second battery slice, the third battery slice and the fourth battery slice are the same in size, and the battery slice body is equally divided into four parts, so that the effect is good.
Drawings
Fig. 1 is a schematic connection diagram of a first cell slice and a second cell slice of a novel high-efficiency laminated photovoltaic module according to the present invention;
fig. 2 is a perspective view of the novel high-efficiency laminated photovoltaic module of the present invention with the cell bodies unconnected;
fig. 3 is a perspective view of the novel high-efficiency laminated photovoltaic module cell body series connection of the present invention;
fig. 4 is a circuit diagram of a novel high-efficiency laminated photovoltaic module according to the present invention;
fig. 5 is a front view of the novel high-efficiency laminated photovoltaic module cell body of the present invention.
The solar cell comprises a cell body 1, a first cell slice 2, a second cell slice 3, a third cell slice 4, a fourth cell slice 5, a back main grid line 6, a front main grid line 7, a front main grid line 8, conductive adhesive 9 and a bus bar belt.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in the figure, the utility model provides a novel high-efficiency laminated photovoltaic module, which comprises at least one cell slice body 1, a back main grid line 6 and a front main grid line 7, wherein the back main grid line 6 is positioned in the middle of the cell slice body 1, the back main grid line 6 is distributed along the width direction of the cell slice body 1, the front main grid line 7 is respectively positioned at the left end and the right end of the cell slice body 1, the front main grid line 7 is distributed along the width direction of the cell slice body 1, the cell slice body 1 is respectively cut into a first cell slice 2, a second cell slice 3, a third cell slice 4 and a fourth cell slice 5 along the axial direction of the back main grid line 6 and the axial direction vertical to the back main grid line 6, the first cell slice 2, the second cell slice 3, the third cell slice 4 and the fourth cell slice 5 are all provided with the back main grid line 6 and the front main grid line 7, the first battery slice 2 and the second battery slice 3 are connected in series to form a first group string, the third battery slice 4 and the fourth battery slice 5 are connected in series to form a second group string, the first group of strings and the second group of strings are connected in parallel, the structures of the first group of strings and the second group of strings are the same, the conductive adhesive 8 is arranged between the back main grid line 6 of the first cell slice 2 and the front main grid line 7 of the second cell slice 3, the utility model has the advantages that the cell slice body 1 with redesigned grid lines is cut into 1/4 pieces by adopting the slicing technology, according to the design process of the laminated tile, the cut battery pieces are heated and adhered into strings through the conductive adhesive 8, the connection is simple, the back main grid lines 6 can be connected with the front main grid lines 7 by heating the conductive adhesive 8, therefore, the light receiving area of the cell body 1 is effectively enlarged, and the average power generation density of the assembly is improved. In addition, the conductive adhesive 8 is used for replacing a welding strip, so that the shielding of the welding strip is avoided, the power of the assembly is promoted, the output power is effectively promoted, the cost is low, the internal loss of the assembly is low, the conversion efficiency of the assembly is high, the battery piece body 1 is longitudinally cut once and transversely cut once, the conductive adhesive 8 used for connecting the first battery piece slice 2 and the second battery piece slice 3 is half less than that of the prior art, the area of the adhesion part of the conductive adhesive 8 is half of the length, the fragment rate of the battery piece can be reduced, the total area of the adhesion part of the conductive adhesive 8 is half of the area of the adhesion part of the prior art, the waste area of the battery piece is reduced, the consumption of the conductive adhesive is reduced, the cost is low, the internal loss of the assembly is low, the conversion efficiency of the assembly is high, the back main grid line 6 is positioned in the middle position of the battery piece body 1, the back main grid line 6 is distributed along the width, the front main grid lines 7 are distributed along the width direction of the battery piece body 1, so that the first battery piece slice 2, the second battery piece slice 3, the third battery piece slice 4 and the fourth battery piece slice 5 all need the back main grid lines 6 and the front main grid lines 7, the back main grid lines 6 and the front main grid lines 7 are respectively located on two sides of the first battery piece slice 2, the first battery piece slice 2 and the second battery piece slice 3 are connected and need to rotate the second battery piece slice 3 by 180 degrees, and the back main grid lines 6 of the first battery piece slice 2 are connected with the front main grid lines 7 of the second battery piece slice 3.
First battery piece section 2, second battery piece section 3, third battery piece section 4 and fourth battery piece section 5 constitute "field" style of calligraphy, the subassembly internal loss is low.
The battery slice structure is characterized by further comprising a bus bar 9, wherein the front main grid line 7 of the first battery slice 2 is connected with the front main grid line 7 of the third battery slice 4 in parallel through the bus bar 9, and the use of the bus bar can be reduced.
The first battery slice 2 and the second battery slice 3 are connected in series in a shingle-folding mode, and the internal loss of the assembly is low.
The battery piece bodies 1 are connected in series, damage to the assembly caused by hot spot effect is reduced, current mismatch loss of the battery piece is reduced, and the battery piece bodies 1 can be multiple.
The battery piece bodies 1 are connected in series through the bus bars 9, the use of the bus bars 9 can be reduced, and the cost is low.
The cell bodies 1 are connected in series in a shingled mode, so that the internal loss of the assembly is reduced, the conversion efficiency of the assembly is improved, and the power generation available area wasted by the assembly is reduced.
The first battery slice 2, the second battery slice 3, the third battery slice 4 and the fourth battery slice 5 are the same in size, the battery body 1 is equally divided into four parts, and the effect is good.
Every half subassembly is established ties again after every two cluster series-parallel connection of area 9 that converge, and it is that the area 9 that converge is established ties first group cluster and second group series-parallel connection, and the rethread area 9 that converges establishes ties a plurality of battery piece bodies 1, and the conducting resin quantity reduces, and is with low costs, the subassembly internal loss is low and subassembly conversion efficiency is high.
Particularly, the utility model discloses a principle is that adopt the section technique to cut into 1/4 pieces with grid line redesign's battery piece body 1, according to the design technology of shingle tile, the battery piece after will cutting passes through 8 heating adhesions of conducting resin and becomes the cluster, connects simply, and heating conducting resin 8 just can realize being connected of back owner grid line 6 and positive owner grid line 7, has effectively enlarged battery piece body 1 photic area like this, promotes the average generating density of subassembly. In addition, the conductive adhesive 8 is used for replacing a welding strip, so that the shielding of the welding strip is avoided, the power of the assembly is promoted, the output power is effectively promoted, the cost is low, the internal loss of the assembly is low, the conversion efficiency of the assembly is high, the welding strip is not welded, the line loss of the assembly is reduced, and the light receiving area is increased; the damage to the assembly caused by the hot spot effect is reduced; the current mismatch loss of the battery plate is reduced; the new version design reduces the cutting times.
1. According to a power formula of mismatch of the battery plates:
PLOSS＝(A1-A2)*V*η*(N-1)；
where V is the cell power, η is the component fill factor, which is generally a fixed value, N is the number of cells, and N is the mismatch powerThe number of the pool pieces; according to the formula, the smaller the number N before slicing the battery slice, the mismatch power PLoSSThe smaller, so this patent uses a separate circuit from top to bottom, reducing the number of cells before slicing from N to
Mismatch power reduction of
2. 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 electricitympAnd the number of the slices of the battery piece is n, the internal resistance loss of the component is reduced
From this equation, it can be seen that the greater the number n of slices of the cell, the smaller the internal resistance loss of the module.
Fig. 1 shows that the back main grid lines 6 on the upper surface of the first cell slice 2 are bonded with the front main grid lines 7 on the front surface of the first cell slice 3 by heating through the conductive adhesive 8; fig. 4 shows that each half of the modules are connected in series after being connected in series and in parallel by every two series groups through the bus strips 9.
The manufacturing process comprises the following steps: firstly, cutting a plurality of battery pieces according to the method in the figure 2; secondly, heating and bonding the battery slice cutting slices into a group string by using conductive adhesive 8 according to the bonding mode of the figure 1; thirdly, typesetting the group strings according to the mode of the figure 4 by using a bus bar 9; and fourthly, manufacturing the typeset string assembly into an assembly according to the conventional manufacturing flow of the half-piece assembly.
While the above is directed to the preferred embodiment of the present invention, it is not intended that it be limited, except as by the appended claims. The present invention is not limited to the above embodiments, and the specific structure thereof allows for changes, all the changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.
Claims (5)
1. The utility model provides a novel high-efficient lamination photovoltaic module, includes at least one cell body (1) and back main grid line (6) and front main grid line (7), its characterized in that: the back main grid lines (6) are located in the middle of the cell body (1), the back main grid lines (6) are distributed along the width direction of the cell body (1), the front main grid lines (7) are respectively located at the left end and the right end of the cell body (1), the front main grid lines (7) are distributed along the width direction of the cell body (1), the cell body (1) is respectively cut into a first cell slice (2), a second cell slice (3), a third cell slice (4) and a fourth cell slice (5) along the axial direction of the back main grid lines (6) and the axial direction perpendicular to the back main grid lines (6), and the first cell slice (2), the second cell slice (3), the third cell slice (4) and the fourth cell slice (5) are respectively provided with the back main grid lines (6) and the front main grid lines (7), the battery pack is characterized in that the first battery piece slice (2) and the second battery piece slice (3) are connected in series to form a first group of strings, the third battery piece slice (4) and the fourth battery piece slice (5) are connected in series to form a second group of strings, the first group of strings and the second group of strings are connected in parallel, the first group of strings and the second group of strings are identical in structure, and a conductive adhesive (8) is arranged between the back main grid line (6) of the first battery piece slice (2) and the front main grid line (7) of the second battery piece slice (3).
2. The novel high efficiency laminated photovoltaic module of claim 1, wherein: the first battery slice (2), the second battery slice (3), the third battery slice (4) and the fourth battery slice (5) form a shape like Chinese character 'tian'.
3. The novel high efficiency laminated photovoltaic module of claim 1, wherein: the battery piece slicing device is characterized by further comprising a bus bar (9), wherein the front main grid line (7) of the first battery piece slicing piece (2) is connected with the front main grid line (7) of the third battery piece slicing piece (4) in parallel through the bus bar (9).
4. The novel high efficiency laminated photovoltaic module of claim 1, wherein: the first battery slice (2) and the second battery slice (3) are connected in series in a shingle overlapping mode.
5. The novel high efficiency laminated photovoltaic module of claim 1, wherein: the first battery slice (2), the second battery slice (3), the third battery slice (4) and the fourth battery slice (5) are the same in size.
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| CN201921003531.0U CN210110811U (en) | 2019-06-28 | 2019-06-28 | Novel high-efficient lamination photovoltaic module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599442A (en) * | 2020-12-01 | 2021-04-02 | 无锡奥特维科技股份有限公司 | Battery piece splitting method |
| JP7261923B1 (en) | 2022-03-28 | 2023-04-20 | 晶科能源（海▲寧▼）有限公司 | Photovoltaic module and manufacturing method thereof |
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2019
- 2019-06-28 CN CN201921003531.0U patent/CN210110811U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599442A (en) * | 2020-12-01 | 2021-04-02 | 无锡奥特维科技股份有限公司 | Battery piece splitting method |
| JP7261923B1 (en) | 2022-03-28 | 2023-04-20 | 晶科能源（海▲寧▼）有限公司 | Photovoltaic module and manufacturing method thereof |
| JP2023145302A (en) * | 2022-03-28 | 2023-10-11 | 晶科能源（海▲寧▼）有限公司 | Photovoltaic module and method for manufacturing the same |
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