CN218730976U - Thin-film solar cell module - Google Patents
Thin-film solar cell module Download PDFInfo
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- CN218730976U CN218730976U CN202222643563.5U CN202222643563U CN218730976U CN 218730976 U CN218730976 U CN 218730976U CN 202222643563 U CN202222643563 U CN 202222643563U CN 218730976 U CN218730976 U CN 218730976U
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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 thin-film solar cell module, including thin-film solar cell panel, it includes bottom side encapsulation, transparent top layer encapsulation and sets up the battery module between bottom encapsulation and top layer encapsulation, battery module ground is to the plain noodles towards the top layer encapsulation, the battery template includes the battery cluster of a plurality of electricity series connections, the battery cluster includes the thin-film solar cell of two at least electricity series connections, wherein: grid lines are arranged between adjacent cell strings in the thin-film solar cell panel, bypass diodes are electrically connected between the adjacent thin-film solar cells in each cell string or between the front end and the rear end of each cell string, and the bypass diodes are integrated with the grid lines and located beside the cell strings. The utility model discloses the device, adjacent thin-film solar cell's both ends are connected with the diode, when the hot spot effect appears, realize the bypass through the diode and switch on, guarantee that photovoltaic module continues the electricity generation, reduce the performance loss, avoid photovoltaic module to damage.
Description
Technical Field
The utility model belongs to the technical field of photovoltaic device, more specifically say, the utility model relates to a thin-film solar cell module.
Background
The photovoltaic module is an important component of the photovoltaic system, and the working stability and reliability of the module directly influence the working state of the photovoltaic system.
The reason why the shielded cells in the serial branches are used as loads to consume energy generated by other solar cell modules with illumination is that the shielded solar cell modules generate heat, namely, the hot spot effect. This effect can severely damage the photovoltaic cell.
In order to solve the above problems, a commonly used method of the photovoltaic cell module at present is to connect a bypass diode on a junction box or in the photovoltaic cell module, and when a single cell in the photovoltaic cell is blocked or damaged, the bypass diode connected in parallel with the string of solar cells bypasses the current flowing through the string of solar cells, so as to prevent the damage of the corresponding solar cell.
The bypass diodes are not additionally arranged on the photovoltaic cell modules in the current market, the copper indium gallium selenide thin-film solar cell is the most potential flexible solar cell module, the modules are formed in a series connection mode, and when a single cell is shielded, the single cell is also influenced by a hot spot effect.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages which will be described later.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a thin film solar cell module including:
thin-film solar cell panel, it includes bottom side encapsulation, transparent top layer encapsulation and sets up the battery module between bottom layer encapsulation and top layer encapsulation, the plain noodles of battery module is towards the top layer encapsulation, the battery module includes the battery cluster of a plurality of electricity series connection, the battery cluster includes two at least electricity series connection's thin-film solar cell, wherein:
grid lines are arranged between adjacent cell strings in the thin-film solar cell panel, bypass diodes are electrically connected between the adjacent thin-film solar cells in each cell string or between the front end and the rear end of each cell string, and the bypass diodes are integrated with the grid lines and arranged beside the cell strings.
Preferably, the thin film solar cell module is composed of a first thin film solar cell plate and a second thin film solar cell plate which have the same structure, the first thin film solar cell plate and the second thin film solar cell plate are connected in series along the transverse direction of the cell string, and the first thin film solar cell plate and the second thin film solar cell plate respectively comprise a thin film solar cell panel.
Preferably, a first lead-out bus bar and a second lead-out bus bar are arranged at two ends of the thin-film solar cell panel along the longitudinal extension direction of the cell string, a bypass bus bar is arranged beside the cell string along the longitudinal extension direction of the cell string, the bypass bus bar is connected with the first lead-out bus bar and the second lead-out bus bar, and each grid line is connected with the bypass bus bar.
Preferably, the thin film solar panel is a flexible copper indium gallium selenide solar panel, wherein:
the thin-film solar cell is a flexible copper indium gallium selenide solar cell, the flexible copper indium gallium selenide solar cell comprises a conductive substrate and a plurality of layers of photovoltaic films arranged on the substrate, the edge of one end of each photovoltaic film is provided with a connecting part electrically isolated from a photovoltaic film main body, and each photovoltaic film sequentially comprises a bottom electrode, a CIGS absorbing layer, a CdS transition layer, a window layer and a top electrode from bottom to top;
the top layer package comprises an upper plate, a plurality of auxiliary grid lines are arranged on the bottom side of the upper plate or on one side facing the light facing surface of the flexible copper indium gallium selenide solar cell, the auxiliary grid lines form a plurality of mutually independent conductive grid patterns matched with the flexible copper indium gallium selenide solar cell, one end of each conductive grid pattern is provided with a protruding part matched with the connecting part, and the protruding parts extend into the adjacent conductive grid patterns and are located above the connecting parts.
Preferably, the flexible copper indium gallium selenide solar cells are electrically connected in series in the following manner:
the flexible CIGS solar cell comprises a flexible CIGS solar cell panel, a flexible CIGS solar cell, a bottom electrode of a front CIGS solar cell, a top electrode of a rear CIGS solar cell, a conductive grid pattern, a protruding part of the conductive grid pattern, a connecting part of a front CIGS solar cell, a bottom electrode of the rear CIGS solar cell, a conductive substrate and a flexible CIGS solar cell, wherein the flexible CIGS solar cell is adjacent to the two adjacent cell strings in the flexible CIGS solar cell panel, the bottom electrode of the front CIGS solar cell is electrically connected with the top electrode of the rear CIGS solar cell, the top electrode of the rear CIGS solar cell is electrically connected with the conductive grid pattern corresponding to the top electrode on the upper plate, the protruding part of the conductive grid pattern is electrically connected with the connecting part of the front CIGS solar cell, and the connecting part is electrically connected with the bottom electrode of the front CIGS solar cell through the conductive substrate.
Preferably, the upper plate is a transparent thermoplastic plastic film, including but not limited to polyethylene terephthalate film and polyvinyl fluoride composite film.
Preferably, the bottom side package comprises a bottom plate, and the bottom plate is a metal layer or a polymer film with stronger corrosion resistance, including but not limited to a chromium film, a polyethylene terephthalate film, and a polyetheretherketone film.
Preferably, in the thin film solar cell panel, the first bus bar is connected with a bottom electrode of the copper indium gallium selenide solar cell to lead out an anode, and the second bus bar is connected with a top electrode of the copper indium gallium selenide solar cell to lead out a cathode.
The utility model discloses at least, include following beneficial effect:
the utility model discloses thin-film solar cell module, adjacent thin-film solar cell all is connected with the bypass diode in every battery cluster, bypass diode an organic whole sets up on the grid line, and a thin-film solar cell when the battery cluster receives sheltering from, covers or damages, and when the hot spot effect appears, the bypass diode at battery both ends realizes that the bypass switches on, guarantees that thin-film solar cell module continues the electricity generation, reduces photovoltaic module's loss of performance, avoids photovoltaic module's damage.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the structure of the device of the present invention;
fig. 2 is a schematic structural diagram of the battery module of the present invention;
FIG. 3 is a schematic view of the structure of the device of the present invention;
fig. 4 is a schematic structural view of the upper plate, the back plate and the thin film solar cell provided by the present invention;
fig. 5 is an exploded view of the connection portion of adjacent thin film solar cells provided by the present invention;
fig. 6 is a schematic view of the internal structure of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or combinations thereof.
It should be noted that in the description of the present invention, the terms indicating the orientation or the positional relationship are based on the orientation or the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, such as "connected," which may be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or a connection between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention in a specific context.
Furthermore, in the present disclosure, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature in direct contact with the first and second features, or in indirect contact with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1-6: the utility model provides a pair of thin-film solar cell module, include:
thin-film solar cell panel 1, it includes bottom side encapsulation, transparent top layer encapsulation and sets up the battery module between bottom layer encapsulation and top layer encapsulation, the plain noodles of battery module is towards the top layer encapsulation, the battery template includes 4 electricity series connection's battery cluster 2, the battery cluster includes two electricity series connection's thin-film solar cell 3, wherein:
The working principle is as follows: the adjacent thin-film solar cells 3 in each cell string 2 are connected with the bypass diodes 5, the bypass diodes 5 are integrally arranged on the grid lines 4, one thin-film solar cell 3 in each cell string 2 is shielded, covered or damaged, and when a hot spot effect occurs, the bypass diodes 5 at two ends of each cell are communicated in a bypass mode, so that the thin-film solar cell component is ensured to continue to generate electricity, the performance loss of the solar cell component is reduced, and the damage of the solar cell component is avoided.
In the technical scheme, the thin film solar cell module comprises a first thin film solar cell plate 6 and a second thin film solar cell plate 7 which are identical in structure, the first thin film solar cell plate 6 and the second thin film solar cell plate 7 are connected in series along the transverse direction of the cell string 2, and the first thin film solar cell plate 6 and the second thin film solar cell plate 7 both comprise the thin film solar cell panel 1.
The first thin film solar cell plate 6 and the second thin film solar cell plate 7 are connected in series through welding to form the thin film solar cell assembly.
In the above technical solution, the thin-film solar cell panel 1 is provided with a first lead-out bus bar 101 and a second lead-out bus bar 102 at two ends along the serial connection direction of the cell strings, a bypass bus bar 103 is provided at a side of the cell strings along the serial connection direction of the cell strings, the bypass bus bar 103 is connected to the first lead-out bus bar 101 and the second lead-out bus bar 102, and each gate line 4 is connected to the bypass bus bar 103. In the thin-film solar cell panel 1, the first bus bar 101 is connected with a bottom electrode 302 of the copper indium gallium selenide solar cell to lead out an anode, and the second bus bar 102 is connected with a top electrode 306 of the copper indium gallium selenide solar cell to lead out a cathode. In this way, the first lead-out bus bar 101 and the second lead-out bus bar 102 are used to lead out the current of the thin-film solar cell panel 1.
In the above technical scheme, the thin film solar cell panel 1 is a copper indium gallium selenide solar cell panel, wherein: the thin-film solar cell 3 is a copper indium gallium selenide solar cell, the copper indium gallium selenide solar cell comprises a conductive substrate 301 and a plurality of layers of photovoltaic films arranged on the substrate, the edge of one end of each photovoltaic film is provided with a connecting part 307 electrically isolated from a photovoltaic film main body, and each photovoltaic film sequentially comprises a bottom electrode 302, a CIGS absorbing layer 303, a CdS transition layer 304, a window layer 305 and a top electrode 306 from bottom to top;
the top layer package comprises a transparent upper plate 8, a plurality of auxiliary grid lines are arranged on the bottom surface of the upper plate 8 or on one side facing the light facing surface of the CIGS solar cell, the auxiliary grid lines form a plurality of mutually independent conductive latticed patterns 801 matched with the CIGS solar cell, one end of each conductive latticed pattern 801 is provided with a bulge 802 matched with a connecting part 307, and each bulge extends to the adjacent conductive latticed patterns and is positioned above the connecting part 307.
In the copper indium gallium selenide solar cell, the conductive substrate 301 is a polyimide film, an indium tin oxide film or a stainless steel film thereof; the bottom electrode 302 can be a metal Mo layer, which is used as the anode of the copper indium gallium selenide solar cell; the top electrode 306 may be an Al-doped ZnO thin film layer, which is used as a negative electrode of the copper indium gallium selenide solar cell.
Wherein the upper plate 8 is a transparent thermoplastic plastic film, including but not limited to polyethylene terephthalate film or polyvinyl fluoride composite film.
Wherein, the bottom side package comprises a bottom plate 9, and the bottom plate 9 is a metal or polymer film with stronger corrosion resistance, including but not limited to a chromium film, a polyethylene terephthalate film or a polyetheretherketone film.
The specific structure and the conductive relationship in the conductive lattice pattern 801 are obvious to those skilled in the art, and therefore, the detailed description is omitted.
In the above technical solution, the electrical series connection mode between each copper indium gallium selenide solar cell is as follows: the copper indium gallium selenide solar cell adjacent to each other between two adjacent cell strings in the copper indium gallium selenide solar cell panel and the bottom electrode of the previous copper indium gallium selenide solar cell in the adjacent copper indium gallium selenide solar cell in each cell string are electrically connected with the top electrode of the next copper indium gallium selenide solar cell, the connection mode is, taking fig. 5 as an example, the top electrode of the next copper indium gallium selenide solar cell 3b is electrically connected with the conductive lattice pattern 801 corresponding to the top electrode on the upper plate, the bulge part 802 of the conductive lattice pattern 801 is electrically connected with the connection part 3a of the previous copper indium gallium selenide solar cell, the connection part is an independent part cut from a photovoltaic film on a conductive substrate, the connection part 307 is electrically isolated from the Yu Guangfu film, and the connection part 307 is electrically connected with the bottom electrode of the previous copper indium gallium selenide solar cell 3a through the conductive substrate. The cathode/top electrode 306 of the copper indium gallium selenide solar cell is led out through the conductive grid pattern formed by the secondary grid line and is connected with the anode/bottom electrode 302 of the adjacent copper indium gallium selenide solar cell, so that the series connection process between the adjacent copper indium gallium selenide solar cells in the copper indium gallium selenide solar cell assembly is realized, wherein the more specific connection mode of the conductive grid pattern and the conductive substrate is the same as the prior art, and therefore, the description is omitted.
The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (6)
1. A thin-film solar cell module comprises a thin-film solar cell panel, wherein the thin-film solar cell panel comprises a bottom side package, a transparent top layer package and a cell module arranged between the bottom layer package and the top layer package, the light-facing surface of the cell module faces the top layer package, the cell module comprises a plurality of cell strings connected in series, the cell strings comprise at least two thin-film solar cells connected in series, and the thin-film solar cell module is characterized in that:
grid lines are arranged between adjacent cell strings in the thin-film solar cell panel, bypass diodes are electrically connected between the adjacent thin-film solar cells in each cell string or between the front end and the rear end of each cell string, the bypass diodes are integrated with the grid lines, and the bypass diodes are arranged beside the cell strings.
2. The thin-film solar cell module as claimed in claim 1, wherein the thin-film solar cell module is composed of a first thin-film solar cell panel and a second thin-film solar cell panel, the first thin-film solar cell panel and the second thin-film solar cell panel being connected in series in a cell string transverse direction, the first thin-film solar cell panel and the second thin-film solar cell panel each including the thin-film solar cell panel.
3. The thin-film solar cell module as claimed in claim 1, wherein the thin-film solar cell panel is provided with a first lead-out bus bar and a second lead-out bus bar at two ends along a cell string serial direction, the cell string is provided with a bypass bus bar at a side along the cell string serial direction, the bypass bus bar is connected with the first lead-out bus bar and the second lead-out bus bar, and each grid line is connected with the bypass bus bar.
4. The thin film solar cell module as claimed in claim 1, wherein the thin film solar cell panel is a flexible copper indium gallium selenide solar cell panel, wherein:
the thin-film solar cell is a flexible copper indium gallium selenide solar cell, the flexible copper indium gallium selenide solar cell comprises a conductive substrate and a plurality of photovoltaic films arranged on the substrate, the edge of one end of each photovoltaic film is provided with a plurality of connecting parts electrically isolated from a photovoltaic film main body, and each photovoltaic film sequentially comprises a bottom electrode, a CIGS (copper indium gallium selenide) absorption layer, a CdS (cadmium sulfide) transition layer, a window layer and a top electrode from bottom to top;
the top layer package comprises an upper plate, a plurality of auxiliary grid lines are arranged on the bottom side of the upper plate or on one side facing the light facing surface of the flexible copper indium gallium selenide solar cell, the auxiliary grid lines form a plurality of mutually independent conductive grid patterns matched with the flexible copper indium gallium selenide solar cell, one end of each conductive grid pattern is provided with a plurality of protrusions matched with the connecting portion, and the protrusions extend into the adjacent conductive grid patterns and are located above the connecting portions.
5. The thin film solar cell module as claimed in claim 4, wherein the flexible CIGS solar cells are electrically connected in series by:
the flexible CIGS solar cell comprises a flexible CIGS solar cell panel, a flexible CIGS solar cell, a bottom electrode of a front CIGS solar cell, a top electrode of a rear CIGS solar cell, a conductive grid pattern, a protruding part of the conductive grid pattern, a connecting part of a front CIGS solar cell, a bottom electrode of the rear CIGS solar cell, a conductive substrate and a flexible CIGS solar cell, wherein the flexible CIGS solar cell is adjacent to the two adjacent cell strings in the flexible CIGS solar cell panel, the bottom electrode of the front CIGS solar cell is electrically connected with the top electrode of the rear CIGS solar cell, the top electrode of the rear CIGS solar cell is electrically connected with the conductive grid pattern corresponding to the top electrode on the upper plate, the protruding part of the conductive grid pattern is electrically connected with the connecting part of the front CIGS solar cell, and the connecting part is electrically connected with the bottom electrode of the front CIGS solar cell through the conductive substrate.
6. The thin-film solar cell module as claimed in any one of claims 1 to 5, wherein in the thin-film solar cell panel, the first lead-out bus bar is connected with the bottom electrode of the CIGS solar cell to lead out the positive electrode, and the second lead-out bus bar is connected with the top electrode of the CIGS solar cell to lead out the negative electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222643563.5U CN218730976U (en) | 2022-10-09 | 2022-10-09 | Thin-film solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222643563.5U CN218730976U (en) | 2022-10-09 | 2022-10-09 | Thin-film solar cell module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218730976U true CN218730976U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222643563.5U Active CN218730976U (en) | 2022-10-09 | 2022-10-09 | Thin-film solar cell module |
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| CN (1) | CN218730976U (en) |
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2022
- 2022-10-09 CN CN202222643563.5U patent/CN218730976U/en active Active
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