CN216980587U - Flexible thin-film solar cell module - Google Patents
Flexible thin-film solar cell module Download PDFInfo
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- CN216980587U CN216980587U CN202220680442.5U CN202220680442U CN216980587U CN 216980587 U CN216980587 U CN 216980587U CN 202220680442 U CN202220680442 U CN 202220680442U CN 216980587 U CN216980587 U CN 216980587U
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Abstract
The utility model relates to the technical field of solar cells, in particular to a flexible thin-film solar cell module. The flexible thin-film solar cell component consists of sub-cell arrays and grid line electrodes which are connected with the sub-cell arrays in a parallel topological mode; the sub-battery array comprises X multiplied by Y sub-batteries which are connected in parallel, a first grid line electrode is connected with the positive electrodes of all the sub-batteries, and a second grid line electrode is connected with the negative electrodes of all the sub-batteries; the first grid line electrode and the second grid line electrode are of a symmetrical structure; the sub-cell arrays form the flexible thin-film solar cell module in a parallel fractal topological connection mode. When the flexible thin-film solar cell module is broken down or scratched, the flexible thin-film solar cell module can still normally work without remedial measures under the condition of open circuit, and the battery module needs to be restored to normally work in a mode of cutting off an electrode under the condition of short circuit, so that the module can normally work, and the application in special scenes is met.
Description
Technical Field
The utility model relates to the technical field of solar cells, in particular to a flexible thin-film solar cell module.
Background
The flexible thin-film solar cell can be used in the field of mobile power supply, such as solar backpacks, tents, carrying and the like. However, the flexible thin film solar cells realize the series connection of sub-cells and form a component product through a grid line or a laser-etched isolation line. For a series configuration, an open circuit in any one cell will result in a complete device failure, while for the entire large structural assembly, any local short circuit will also result in a device failure. The perovskite solar cell module and the preparation method thereof (publication number: CN 110165059B) provide a series-parallel connection structure, which can reduce the risk caused by the damage, but the existence of the series connection structure still causes most area of the module to lose the effect. At present, the existing flexible thin-film solar cell module products do not have the functions of resisting perforation or local scratches and the like, and any local mechanical damage can cause the failure of the whole module.
SUMMERY OF THE UTILITY MODEL
In view of the problems of the flexible thin-film solar cell module, the utility model aims to provide a flexible thin-film solar cell module which realizes the perforation resistance and the local scratch resistance of the flexible thin-film solar cell module by miniaturizing sub-cells and adopting a parallel topological connection mode.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a flexible thin-film solar cell component is composed of a sub-cell array and grid line electrodes connected with the sub-cell array in a parallel fractal topology mode; the sub-battery array comprises X multiplied by Y sub-batteries, wherein X represents the number of the sub-batteries of the sub-battery array in the transverse direction, Y represents the number of the sub-batteries of the sub-battery array in the longitudinal direction, the value range of X is a natural number of 2-4, and the value range of Y is a natural number of 2-4;
the sub-batteries are connected in parallel, the first grid line electrode is connected with the anode of the sub-battery, and the second grid line electrode is connected with the cathode of the sub-battery;
the first grid line electrode and the second grid line electrode are of symmetrical structures;
the sub-cell arrays form the flexible thin-film solar cell module in a parallel fractal topological connection mode.
As an alternative implementation manner, in the embodiment of the present invention, the modules form solar cell sets of different sizes through a parallel fractal topology.
As an alternative implementation, in the embodiment of the present invention, the sub-battery is prepared based on a flexible conductive substrate, the conductive substrate may be a metal foil, such as a stainless steel sheet, a nickel sheet, an aluminum sheet, a titanium sheet, etc., and the conductive substrate may also be a plastic sheet, such as polyimide, PET, PEN, etc.; the light receiving surface of the battery is a transparent conductive film, and the battery can be any one of copper indium gallium selenide, a silicon film, cadmium telluride, perovskite, an organic battery and the like;
if the sub-battery is prepared on the basis of a flexible non-conductive substrate, the sub-battery forms a back electrode in an electrode revolving mode; if the substrate is conductive, the gate line electrode is directly connected to the substrate.
The length of the sub-battery is not more than 2 cm, the width of the sub-battery is not more than 2 cm, and the thickness of the sub-battery is 15-30 micrometers.
As an optional implementation mode, in the embodiment of the utility model, the sub-batteries are spaced by 2-3 mm.
As an optional implementation manner, in an embodiment of the present invention, the connecting the first gate line electrode to the positive electrode of the sub-battery includes: connecting the positive electrodes of the Y sub-batteries in each row in the longitudinal direction through a longitudinal grid line electrode; and two transverse grid line electrodes are respectively connected with two ends of the X longitudinal grid line electrodes.
As an optional implementation manner, in an embodiment of the present invention, the connecting the second grid line electrode to the negative electrode of the sub-battery includes: connecting the negative electrodes of the Y sub-batteries in each row in the longitudinal direction through a longitudinal grid line electrode; and two transverse grid line electrodes are respectively connected with two ends of the X longitudinal grid line electrodes.
As an optional implementation manner, in the embodiment of the present invention, the gate line electrode is formed by hot-pressing a silver line wrapped by a hot-melt and conductive material; the diameter of the grid line electrode is 100-300 microns, and the diameter of the grid line electrode is increased along with the increase of the size of the component and the current.
As an optional implementation manner, in the embodiment of the present invention, after a single sub-cell is damaged or broken down, when the output power drop rate of the flexible thin film solar cell module approaches to the damage rate of the sub-cell, the sub-cell is broken and damaged; when the output power reduction rate of the flexible thin-film solar cell component is very obvious and the breakage rate of the ionic cell is very obvious, the ionic cell is short-circuited and damaged.
As an optional implementation manner, in the embodiment of the present invention, when a single sub-cell is broken and damaged, the flexible thin film solar cell module can normally operate.
As an optional implementation manner, in the embodiment of the present invention, when a single sub-cell is short-circuited and damaged, the gate line electrode at the short-circuit portion is cut off, and the flexible thin-film solar cell module recovers to normal operation.
The utility model has the beneficial effects that:
according to the flexible thin-film solar cell module, the size and the connection distance of the sub-cells are determined according to common damage in a battlefield, the sub-cells are connected in parallel in a topological manner through the grid line electrodes, the positive grid line electrode and the negative grid line electrode are of a symmetrical structure, so that the flexible thin-film solar cell module is judged to be short-circuited or open-circuited after being punctured or scratched, the flexible thin-film solar cell module can still normally work without taking remedial measures under the condition of open circuit, the battery module is recovered to normally work in the mode of cutting off the electrodes under the condition of short circuit, and the application in special scenes is met.
Drawings
Fig. 1 is a schematic diagram of a gate line electrode connection of a flexible thin film solar cell module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a four-component parallel battery pack according to an embodiment of the present invention;
fig. 3 is a schematic diagram of repairing a flexible thin film solar module after short circuit damage, which is disclosed by the embodiment of the utility model.
Reference numerals: 1. the solar cell comprises a sub-cell, 2, a first grid line electrode, 3, a second grid line electrode, 4, a sub-cell array, 5, a flexible thin film solar cell component, 6, a short circuit damage part, 7, a cutting part, 21, a front longitudinal grid line electrode, 22, a front transverse grid line electrode, 31, a back longitudinal grid line electrode, 32 and a back transverse grid line electrode.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a gate line electrode connection of a flexible thin film solar cell module according to an embodiment of the present invention. The subcell array 4 depicted in fig. 1 includes 2 subcells 1 in the transverse direction, 2 subcells 1 in the longitudinal direction, a first grid line electrode 2, and a second grid line electrode 3, and the connection mode is: all the sub-batteries 1 are connected in parallel, the first grid line electrode 2 is connected with the anodes of all the sub-batteries 1, and the second grid line electrode 3 is connected with the cathodes of all the sub-batteries 1.
The first gate line electrode 2 and the second gate line electrode 3 are symmetrical structures.
The 2 x 2 sub-cell arrays 4 form the flexible thin-film solar cell module in a parallel fractal topological connection mode.
It can be seen that, by adopting the symmetrical structure, when the sub-battery 1 is damaged, the first grid line electrode 2 and the second grid line electrode 3 connected with the damaged sub-battery can be conveniently and simultaneously cut off.
Optionally, the sub-battery 1 is a perovskite battery prepared based on a flexible stainless steel sheet, the grid line electrode is directly connected with the substrate, and the sub-battery 1 is 2 cm in length and 2 cm in width; the thickness was 30 microns.
It can be seen that, in general, the diameter of the bullet hole caused by the breakdown of the battlefield bullet is not more than 2 cm, and the sub-battery 1 of the present embodiment is designed to have a length of 2 cm and a width of 2 cm, so that the bullet hole can be limited in one sub-battery array 4.
Optionally, the sub-cells 1 of this embodiment have a pitch of 3 mm.
Alternatively, as shown in fig. 1, the positive electrodes of the sub-battery arrays 4 in the longitudinal direction of each array are connected through a front longitudinal grid line electrode 21; respectively connecting two ends of 2 front longitudinal grid line electrodes 21 by using 2 front transverse grid line electrodes 22;
optionally, as shown in fig. 1, on the back surface of the sub-battery array 4, the cathodes of 2 sub-batteries 1 in each column in the longitudinal direction are connected through a back surface longitudinal grid line electrode 31; respectively connecting two ends of the 2 back longitudinal grid line electrodes 31 by using the 2 back transverse grid line electrodes 32;
optionally, the grid line electrode is formed by hot-pressing a silver wire wrapped by a hot-melt conductive material; the gate line electrode diameter was 200 microns.
Therefore, in the flexible thin-film solar cell module described in this embodiment, the sub-cells are independent from each other, and the sub-cells are connected in parallel, so that the overall operation of the cell module is not affected after one or more sub-cells are damaged.
Example two
Referring to fig. 2, fig. 2 is a schematic diagram of a four-component parallel battery pack according to an embodiment of the present invention. The cell set depicted in fig. 2 is composed of 4 flexible thin-film solar cell modules 5 through a parting topology, the flexible thin-film solar cell module 5 is composed of 4 sub-cell arrays 4, and the first grid line electrode 2 is connected with the positive electrode of each sub-cell 1.
Optionally, when a flexible thin-film solar cell module 5 in the four-module parallel battery pack described in fig. 2 cannot work normally, the flexible thin-film solar cell module 5 can be replaced to repair the battery pack.
It can be seen that the flexible thin-film solar cell modules 5 described in fig. 2 can be combined into flexible thin-film solar cell modules of various sizes through a parallel fractal topology, so as to meet different requirements.
EXAMPLE III
Referring to fig. 3, fig. 3 is a schematic diagram illustrating repair of a flexible thin film solar module after short circuit damage according to an embodiment of the present invention. The short circuit damage 6 caused by the penetration of the sub-battery 1 by a sharp object or bullet;
optionally, after a single sub-cell 1 is damaged or broken down, when the output power reduction rate of the flexible thin-film solar cell module 5 is close to the sub-cell damage rate, the sub-cell is broken and damaged; when the output power reduction rate of the flexible thin-film solar cell component is very obvious and the breakage rate of the ionic cell is very obvious, the ionic cell is short-circuited and damaged.
Optionally, when the short-circuit damage part 6 causes the open circuit damage of the sub-cell 1, the flexible thin-film solar cell module can work normally.
Optionally, when the short-circuit damage 6 causes the short-circuit damage of the sub-cell 1, the gate line electrode cut-off part 7 at the short-circuit part of the sub-cell array 4 is cut off, and the flexible thin-film solar cell module returns to normal operation.
Therefore, the flexible thin-film solar cell module described in the embodiment has an anti-damage function, the overall work of the cell module is not affected by local open circuit damage, and short circuit damage can be repaired by simply cutting off the connecting electrode, so that the cell module can be recovered to work normally.
Finally, it should be noted that: the flexible thin-film solar cell module disclosed in the embodiments of the present invention is only a preferred embodiment of the present invention, and is only used for illustrating the technical solution of the present invention, not limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A flexible thin-film solar cell component is characterized by comprising a sub-cell array and grid line electrodes connected with the sub-cell array in a parallel fractal topology mode;
the sub-battery array comprises X multiplied by Y sub-batteries, wherein X represents the number of the sub-batteries of the sub-battery array in the transverse direction, Y represents the number of the sub-batteries of the sub-battery array in the longitudinal direction, the value range of X is a natural number of 2-4, and the value range of Y is a natural number of 2-4;
the sub-batteries are connected in parallel, the first grid line electrode is connected with the anode of the sub-battery, and the second grid line electrode is connected with the cathode of the sub-battery;
the first grid line electrode and the second grid line electrode are of symmetrical structures;
the sub-cell arrays form the flexible thin-film solar cell module in a parallel fractal topological connection mode.
2. Flexible thin-film solar cell module according to claim 1,
the solar battery pack with different sizes is formed by the assembly through a parallel fractal topological structure.
3. The flexible thin-film solar cell module as claimed in claim 1, wherein the sub-cells are prepared on the basis of a flexible non-conductive substrate such that the sub-cells form a back electrode by means of electrode rotation; if the substrate is conductive, the grid line electrode is directly connected with the substrate;
the length of the sub-battery is not more than 2 cm, the width of the sub-battery is not more than 2 cm, and the thickness of the sub-battery is 15-30 micrometers.
4. The flexible thin-film solar cell module as claimed in claim 1, wherein the sub-cell pitch is 2-3 mm.
5. The flexible thin film solar cell module as claimed in claim 1, wherein the connection of the first gate line electrode to the positive sub-cell electrode comprises:
connecting the positive electrodes of the Y sub-batteries in each row in the longitudinal direction through a longitudinal grid line electrode;
and two transverse grid line electrodes are respectively connected with two ends of the X longitudinal grid line electrodes.
6. The flexible thin film solar cell module as claimed in claim 1, wherein the second gate line electrode connected to the negative electrode of the sub-cell comprises:
connecting the negative electrodes of the Y sub-batteries in each row in the longitudinal direction through a longitudinal grid line electrode;
and two transverse grid line electrodes are respectively connected with two ends of the X longitudinal grid line electrodes.
7. The flexible thin film solar cell module as claimed in claim 1, 5 or 6, wherein the grid line electrode is formed by hot pressing silver wires wrapped with a hot-melt and conductive material;
the diameter of the grid line electrode is 100-300 microns, and the diameter of the grid line electrode is increased along with the increase of the size of the component and the current.
8. The flexible thin-film solar cell module as claimed in claim 1, wherein after a single sub-cell is damaged or broken down,
when the output power reduction rate of the flexible thin-film solar cell component is close to the breakage rate of the sub-cell, the sub-cell is broken and damaged;
when the output power reduction rate of the flexible thin-film solar cell component is very obvious and the breakage rate of the ionic cell is very obvious, the ionic cell is short-circuited and damaged.
9. Flexible thin-film solar cell module according to claim 8,
when the single sub-cell is broken and damaged, the flexible thin-film solar cell component can work normally.
10. Flexible thin-film solar cell module according to claim 8,
and when the single sub-battery is damaged due to short circuit, the grid line electrode at the short circuit part is cut off, and the flexible thin-film solar battery component recovers to work normally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220680442.5U CN216980587U (en) | 2022-03-25 | 2022-03-25 | Flexible thin-film solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220680442.5U CN216980587U (en) | 2022-03-25 | 2022-03-25 | Flexible thin-film solar cell module |
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| Publication Number | Publication Date |
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| CN216980587U true CN216980587U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220680442.5U Active CN216980587U (en) | 2022-03-25 | 2022-03-25 | Flexible thin-film solar cell module |
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| CN (1) | CN216980587U (en) |
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- 2022-03-25 CN CN202220680442.5U patent/CN216980587U/en active Active
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