CN218385240U - Structure for realizing single-side series connection of flexible thin film solar cells - Google Patents
Structure for realizing single-side series connection of flexible thin film solar cells Download PDFInfo
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- CN218385240U CN218385240U CN202222809501.7U CN202222809501U CN218385240U CN 218385240 U CN218385240 U CN 218385240U CN 202222809501 U CN202222809501 U CN 202222809501U CN 218385240 U CN218385240 U CN 218385240U
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- 239000010409 thin film Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 18
- 239000010408 film Substances 0.000 claims description 15
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 3
- 239000007888 film coating Substances 0.000 claims description 3
- 238000009501 film coating Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000010354 integration Effects 0.000 description 4
- 238000002679 ablation Methods 0.000 description 2
- 238000003486 chemical etching Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
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Abstract
The utility model discloses a realize structure of flexible thin film solar cell single face series connection relates to the photovoltaic cell field, specifically includes: at least two flexible thin film photovoltaic cells and a bus lead; the flexible thin film photovoltaic cell sheet comprises: an active area capable of generating electric energy and an inactive area as a connection terminal; the bus lead connects the active area and the inactive area of the adjacent flexible thin film photovoltaic cell pieces in series; the utility model discloses, through rational arrangement and design, realized photovoltaic cell series connection on the photovoltaic cell single face to it is more reliable than the two-sided tandem system of tradition to establish ties.
Description
Technical Field
The utility model relates to a photovoltaic cell field, concretely relates to realize structure of flexible film solar cell single face series connection.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
At present, the flexible film photovoltaic module adopts a scheme that grid lines are arranged on a light receiving surface of a battery and are converged and led out to be connected to the back surface of another photovoltaic battery piece to be connected in series; according to the scheme, series connection is realized through two sides of the photovoltaic cell pieces, the series connection lines and the cell pieces need to be alternately stacked, the complexity of the series connection process is increased, the electrical connection abnormity caused by falling of the internal series connection lines easily occurs in the bending process of the flexible assembly, and the assembly has damage risks.
For the serial structure described in the patent (publication number: CN 104412357A), the integration of the electrode grid line and the serial line is required and the serial connection mode is limited to point connection, which results in insufficient flexibility and risk of connection failure in the practical application process, and the integration of the electrode grid line and the serial line results in great production difficulty, insufficient flexibility and high production cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an: the structure for realizing the single-side series connection of the flexible film solar cells is provided, the series connection of the photovoltaic cells is realized on the single side of the photovoltaic cells through reasonable layout and design, the series connection is more reliable than the traditional double-side series connection mode, and the problems are solved.
The technical scheme of the utility model as follows:
a structure for realizing single-side series connection of flexible thin film solar cells specifically comprises:
at least two flexible film photovoltaic cell pieces, include on the flexible film photovoltaic cell piece: an active area capable of generating electric energy and an inactive area as a connection terminal; preferably, the flexible thin film photovoltaic cell piece is a stainless steel substrate flexible thin film photovoltaic cell piece;
and the bus lead is used for connecting the active area and the inactive area of the adjacent flexible thin film photovoltaic cell sheets in series.
Further, the active area and the inactive area are electrically isolated;
the invalid region is a region where an effective film layer on one side of the flexible thin film photovoltaic cell piece is damaged to expose an electrode of the flexible thin film photovoltaic cell piece in order to realize a series connection function; preferably, the invalid region is a region where the electrode of the flexible thin-film photovoltaic cell piece is exposed by destroying the effective film layer on the right side of the flexible thin-film photovoltaic cell piece by adopting methods such as laser or machinery (including laser scribing, ablation, chemical etching, mechanical scribing and the like);
the active area refers to an area capable of generating electrical energy on the flexible thin film photovoltaic cell sheet.
Further, still include: an electrode gate line disposed in the active region;
the electrode grid line is made of a conductive material and is used for electrically leading out the negative electrode of the flexible thin-film photovoltaic cell piece; preferably, as shown in fig. 1, the electrode grid lines are transversely arranged in the range of the active area of the flexible thin film photovoltaic cell.
Further, the bus lead is made of a conductive material;
one end of the confluence lead is connected with an electrode grid line on the flexible thin film photovoltaic cell piece, and the other end of the confluence lead is connected with an invalid region of the adjacent flexible thin film photovoltaic cell piece.
Further, the manner of connecting the bus lead and the electrode gate line includes: the direct contact, the conductive adhesive adhesion, the welding or the confluence lead and the electrode grid line are made of an integrated material.
Furthermore, the connection mode of the bus lead and the invalid region comprises the following steps: welding, adhering conductive adhesive or directly contacting; preferably, wherein the welding comprises: resistance welding, laser welding, ultrasonic welding, arc welding, thermofussion welding, and the like.
Further, the electrode grid line is: manufacturing a built-in grid line on the effective area by adopting the processes of film coating, silk screen printing and the like; in addition, the electrode grid line can also be an external grid line, namely the electrode grid line is: the external grid line is manufactured in the modes of etching, winding and the like.
Further, since the bus bar lead may pass through the edge region of the flexible thin film photovoltaic cell sheet, there is a risk of short circuit, and therefore, an insulating layer is provided on the bus bar lead, preferably, on a portion of the bus bar lead passing through the edge region of the flexible thin film photovoltaic cell sheet.
The specific implementation steps of the structure for realizing single-side series connection of the flexible thin film solar cell are as follows:
(1) taking a flexible thin film photovoltaic cell piece cut to a proper size, and arranging an effective area and an ineffective area at proper positions of the flexible thin film photovoltaic cell piece;
(2) manufacturing an electrode grid line in the effective area (if the electrode grid line is external, laying the electrode grid line in the effective area);
(3) connecting one end of the bus lead with the electrode grid line (if the electrode grid line and the bus lead are integrated, the step is not needed);
(4) arranging a plurality of flexible thin film photovoltaic cells;
(5) and sequentially connecting the other end of the confluence lead with the invalid region, thus completing the single-side series connection of a plurality of flexible thin film photovoltaic cells.
Compared with the prior art, the beneficial effects of the utility model are that:
1. a structure for realizing single-side series connection of flexible thin film solar cells comprises: at least two flexible thin film photovoltaic cell pieces, include on the flexible thin film photovoltaic cell piece: an active region capable of generating electric power and an inactive region as a connection terminal; the bus lead is used for connecting the active area and the inactive area of the adjacent flexible thin film photovoltaic cell sheets in series; through reasonable layout and design, the series connection of the photovoltaic cells is realized on a single side of the photovoltaic cells, and the series connection is more reliable than the traditional double-side series connection mode.
2. The utility model provides a realize structure of flexible film solar cell single face series connection, to flexible film photovoltaic module, can effectively avoid having appeared that the series circuit drops, series circuit and photovoltaic cell piece separation scheduling problem in the distortion in-process is buckled to the subassembly, has promoted the stability of photovoltaic module structure.
3. A structure for realizing single-side series connection of flexible thin-film solar cells avoids the process of alternately placing series circuits and photovoltaic cell pieces in the process of practical application, only needs the production process of placing photovoltaic cell modules, and reduces the production cost.
Drawings
Fig. 1 is a schematic structural diagram of realizing single-sided serial connection of flexible thin film solar cells.
Reference numerals are as follows: the solar cell comprises a flexible thin film photovoltaic cell sheet 1, an electrode grid line 2, a bus lead 3, an active area 4 and an inactive area 5.
Detailed Description
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention will be described in further detail with reference to the following examples.
Example one
At present, the flexible film photovoltaic module adopts a scheme that grid lines are arranged on a light receiving surface of a battery and are converged and led out to be connected to the back surface of another photovoltaic battery piece to be connected in series; this scheme is because it realizes establishing ties through photovoltaic cell piece both sides, and series connection circuit need overlap in turn with the battery piece together, has not only increased the complexity of series connection process, more makes the electric connection that the inside series connection circuit drops and leads to appear easily at the crooked in-process of flexible assembly unusual, and the subassembly has the risk of damaging.
For the serial structure described in the patent (publication number: CN 104412357A), the integration of the electrode grid line and the serial line is required and the serial connection mode is limited to point connection, which results in insufficient flexibility and risk of connection failure in the practical application process, and the integration of the electrode grid line and the serial line results in great production difficulty, insufficient flexibility and high production cost.
To the above problems, the present embodiment provides a structure for realizing single-sided serial connection of flexible thin film solar cells, and through reasonable layout and design, the single-sided serial connection of the photovoltaic cells is realized, and the serial connection is more reliable than the traditional double-sided serial connection mode.
Referring to fig. 1, a structure for realizing single-sided serial connection of flexible thin film solar cells specifically includes:
at least two flexible thin film photovoltaic cell pieces 1, include on the flexible thin film photovoltaic cell piece 1: an active area 4 capable of generating electric energy and an inactive area 5 as a connection terminal; preferably, the flexible thin film photovoltaic cell piece 1 is a stainless steel substrate flexible thin film photovoltaic cell piece;
and the bus lead 3 is used for connecting the active region 4 and the inactive region 5 of the adjacent flexible thin film photovoltaic cell sheets 1 in series.
In the present embodiment, specifically, the active area 4 and the inactive area 5 are electrically isolated from each other;
the invalid area 5 is positioned at one side of the effective area 4; preferably, as shown in fig. 1, the left side of the flexible thin film photovoltaic cell sheet 1 is an active area 4, and the right side of the flexible thin film photovoltaic cell sheet 1 is an inactive area 5;
the invalid region 5 is a region where an effective film layer on one side of the flexible thin film photovoltaic cell piece 1 is damaged to expose an electrode of the flexible thin film photovoltaic cell piece 1 in order to realize a series connection function; preferably, the invalid region 5 is a region where the electrode of the flexible thin-film photovoltaic cell 1 is exposed by destroying the effective film layer on the right side of the flexible thin-film photovoltaic cell 1 by adopting methods such as laser or machinery (including laser scribing, ablation, chemical etching, mechanical scribing and the like);
the active area 4 refers to an area capable of generating electric energy on the flexible thin film photovoltaic cell sheet 1.
In this embodiment, specifically, the method further includes: an electrode gate line 2 disposed in the active region 4;
the electrode grid line 2 is made of a conductive material and is used for electrically leading out the negative electrode of the flexible thin film photovoltaic cell piece 1; preferably, as shown in fig. 1, the electrode grid lines 2 are transversely arranged within the range of the active area 4 of the flexible thin film photovoltaic cell sheet 1.
In the present embodiment, specifically, the bus bar lead 3 is a conductive material;
one end of the confluence lead 3 is connected with the electrode grid line 2 on the flexible thin film photovoltaic cell 1, and the other end of the confluence lead is connected with the invalid region 5 of the adjacent flexible thin film photovoltaic cell 1.
In this embodiment, specifically, the connection manner of the bus bar lead 3 and the electrode grid line 2 includes: the direct contact, the conductive adhesive adhesion, the welding or the confluence lead 3 and the electrode grid line 2 are made of an integrated material.
In this embodiment, specifically, the connection manner of the bus lead 3 and the dead zone 5 includes: welding, adhering conductive adhesive or directly contacting; preferably, wherein the welding comprises: resistance welding, laser welding, ultrasonic welding, arc welding, thermofussion welding, and the like.
In this embodiment, specifically, the electrode grid line 2 is: manufacturing a built-in grid line on the effective area 4 by adopting the processes of film coating, silk screen printing and the like; in addition, the electrode gate line 2 may also be an external gate line, that is, the electrode gate line 2 is: the external grid line is manufactured in the modes of etching, winding and the like.
In the present embodiment, particularly, since the bus bar lead 3 passes through the edge region of the flexible thin film photovoltaic cell sheet 1, there is a risk of short circuit, and therefore, an insulating layer is provided on the bus bar lead 3, and preferably, an insulating layer is provided on the bus bar lead at a portion passing through the edge region of the flexible thin film photovoltaic cell sheet 1.
The specific implementation steps of the structure for realizing single-side series connection of the flexible thin film solar cells provided by the embodiment are as follows:
(1) taking the flexible thin film photovoltaic cell piece 1 which is cut into a proper size, and arranging an effective area 4 and an ineffective area 5 at proper positions of the flexible thin film photovoltaic cell piece 1;
(2) manufacturing an electrode grid line 2 in the effective area 4 (if the electrode grid line 2 is external, laying the electrode grid line 2 into the effective area 4);
(3) connecting one end of the bus lead 3 with the electrode grid line 2 (this step is not needed if the electrode grid line 2 and the bus lead 3 are integrated);
(4) arranging a plurality of flexible thin film photovoltaic battery pieces 1 in rows and columns;
(5) and sequentially connecting the other end of the bus lead 3 with the invalid region 5 to complete the single-side series connection of the plurality of flexible thin film photovoltaic cell pieces 1.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
The background section is provided to generally present the context of the invention, and work of the presently named inventors, to the extent it is described in this background section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present invention.
Claims (10)
1. A structure for realizing single-side series connection of flexible thin film solar cells is characterized by comprising:
at least two flexible thin film photovoltaic cell pieces (1), include on the flexible thin film photovoltaic cell piece (1): an active region (4) for generating electrical energy and an inactive region (5) as a connection terminal;
and the bus lead (3) is used for connecting the active area (4) and the inactive area (5) of the adjacent flexible thin film photovoltaic cell pieces (1) in series.
2. The structure for realizing single-sided series connection of flexible thin film solar cells according to claim 1, wherein the flexible thin film photovoltaic cell (1) is a stainless steel substrate flexible thin film photovoltaic cell.
3. The structure for realizing single-sided serial connection of flexible thin film solar cells according to claim 2, characterized in that the active region (4) and the inactive region (5) are electrically isolated from each other;
the invalid region (5) is a region which breaks an effective film layer of the flexible film photovoltaic cell piece (1) to expose an electrode of the flexible film photovoltaic cell piece (1) in order to realize a series connection function.
4. The structure of claim 1, further comprising: an electrode grid line (2) disposed in the active region (4);
the electrode grid line (2) is made of a conductive material and is used for electrically leading out one electrode of the flexible thin film photovoltaic cell piece (1).
5. The structure for realizing single-sided serial connection of flexible thin film solar cells according to claim 4, characterized in that the bus leads (3) are made of conductive material;
one end of the confluence lead (3) is connected with the electrode grid line (2) on the flexible thin film photovoltaic cell piece (1), and the other end of the confluence lead is connected with the invalid region (5) of the adjacent flexible thin film photovoltaic cell piece (1).
6. The structure for realizing single-sided serial connection of flexible thin film solar cells according to claim 5, wherein the manner of connecting the bus lead (3) and the electrode grid line (2) comprises: the direct contact, the conductive adhesive adhesion, the welding or the confluence lead (3) and the electrode grid line (2) are made into an integral material.
7. The structure for realizing single-sided serial connection of flexible thin film solar cells according to claim 5, wherein the connection mode of the bus lead (3) and the dead zone (5) comprises: welding, conductive adhesive sticking or direct contact.
8. The structure for realizing single-sided series connection of flexible thin film solar cells according to claim 4, wherein the electrode grid lines (2) are: and the built-in grid line on the effective area (4) is manufactured by adopting a film coating and silk-screen process.
9. The structure for realizing single-sided series connection of flexible thin film solar cells according to claim 4, wherein the electrode grid lines (2) are: and the external grid line is manufactured in an etching and winding mode.
10. The structure for realizing single-sided serial connection of flexible thin film solar cells according to claim 1, characterized in that the bus lead (3) is provided with an insulating layer.
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| CN202222809501.7U CN218385240U (en) | 2022-10-25 | 2022-10-25 | Structure for realizing single-side series connection of flexible thin film solar cells |
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| CN202222809501.7U CN218385240U (en) | 2022-10-25 | 2022-10-25 | Structure for realizing single-side series connection of flexible thin film solar cells |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118136704A (en) * | 2024-03-04 | 2024-06-04 | 江苏宜兴德融科技有限公司 | Flexible thin-film batteries, CIC structure batteries, CIC components |
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2022
- 2022-10-25 CN CN202222809501.7U patent/CN218385240U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118136704A (en) * | 2024-03-04 | 2024-06-04 | 江苏宜兴德融科技有限公司 | Flexible thin-film batteries, CIC structure batteries, CIC components |
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