CN109586665B - Foldable solar panel with bistable characteristic - Google Patents
Foldable solar panel with bistable characteristic Download PDFInfo
- Publication number
- CN109586665B CN109586665B CN201910044748.4A CN201910044748A CN109586665B CN 109586665 B CN109586665 B CN 109586665B CN 201910044748 A CN201910044748 A CN 201910044748A CN 109586665 B CN109586665 B CN 109586665B
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- CN
- China
- Prior art keywords
- solar panel
- bistable
- cylindrical shell
- antisymmetric
- memory alloy
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- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 28
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 16
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 10
- 239000004593 Epoxy Substances 0.000 claims description 10
- 239000004917 carbon fiber Substances 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 3
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S30/00—Structural details of PV modules other than those related to light conversion
- H02S30/20—Collapsible or foldable PV modules
-
- 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 invention discloses a solar panel with a foldable bistable characteristic, which comprises a solar panel main body and an antisymmetric bistable cylindrical shell, wherein the solar panel main body comprises a central solar panel and side solar panels, four sides of the central solar panel are respectively connected with one side solar panel through the antisymmetric bistable cylindrical shell, the central solar panel and the side solar panels can relatively rotate, the outer side of the antisymmetric bistable cylindrical shell is provided with a shape memory alloy, and the shape recovery direction of the shape memory alloy is consistent with the circumferential direction of the antisymmetric bistable cylindrical shell. The invention has the advantages of simple structure, convenient use, good stability, flexibility, variability, light weight and small volume, replaces the unfolding structure of the traditional mechanical solar panel, and has good application prospect.
Description
Technical Field
The invention relates to the technical field of solar panels, in particular to a foldable solar panel with bistable characteristics.
Background
The intelligent deformable structure is a structure which can be unfolded into a three-dimensional device, so that the space utilization rate is greatly improved, and the intelligent deformable structure is widely applied to the fields of aerospace and the like, and therefore, the intelligent deformable structure becomes a hot spot for current research. Origami is a paper folding technique that can convert materials between two-dimensional graphics and three-dimensional structures by folding peaks and valleys. The technology has very wide application range in the fields of intelligent structural design, foldable mechanisms and the like. Bistable composite is an emerging smart composite with two different stable states, the transition between which requires some external force to drive and no external force to maintain when in a stable state. The Origami structure is organically combined with the bistable material, so that the novel structure has the multi-state characteristic of a paper folding structure and the stability of the bistable material. When the satellite is in the rocket, the space of each point is precious, and the solar panel is unfolded after the satellite is separated from the rocket, so that the deployable solar panel system combining the bistable paper folding technology is designed.
Disclosure of Invention
Aiming at the problems of large mass, complex structure and inauguration of a folding mechanism formed by a torsion spring and a hinge of the traditional solar panel, the invention aims to provide the solar panel with the bistable characteristic, which is foldable, and the bistable material in the solar panel is driven to deform by a shape memory alloy, so that the shape of the whole structure is promoted to be changed to replace the traditional mechanical structure.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a solar panel with bistable characteristic is collapsible, includes solar panel main part and anti-symmetrical bistable cylindrical shell, solar panel main part includes central solar panel and side solar panel, and the four sides of central solar panel are connected with a side solar panel through anti-symmetrical bistable cylindrical shell respectively, and central solar panel and side solar panel can rotate relatively, and the outside of anti-symmetrical bistable cylindrical shell is equipped with shape memory alloy, and shape memory alloy's shape recovery direction is unanimous with the hoop of anti-symmetrical bistable cylindrical shell.
The solar panel with the bistable characteristic is characterized in that four sides of the central solar panel are respectively provided with a screw hole, one side of the side solar panel is provided with a screw hole, two ends of the anti-symmetrical bistable cylindrical shell are respectively provided with a screw hole, and two ends of the anti-symmetrical bistable cylindrical shell are fixedly connected with the central solar panel and the side solar panel through screws respectively.
The solar panel with the bistable characteristic is foldable, and the antisymmetric bistable cylindrical shell is prepared from a carbon fiber epoxy composite material.
The solar panel with the bistable characteristic is characterized in that the anti-symmetrical bistable cylindrical shell is a composite structure formed by at least two layers of carbon fiber epoxy composite materials.
In the solar panel with the bistable characteristic and the foldable carbon fiber epoxy composite structure, fiber directions of two adjacent layers are different to form an antisymmetric layering.
The solar panel with the bistable characteristic is foldable, and the shape memory alloy comprises a group of shape memory alloy strips which are combined with the antisymmetric bistable cylindrical shell into a whole.
The solar panel with the bistable characteristic is foldable, and the shape memory alloy is NiTi shape memory alloy.
By adopting the technology, compared with the prior art, the invention has the following beneficial effects:
1) The invention improves the traditional folding structure using the torsion spring and the hinge, and realizes the intelligent controllability of the folding structure;
2) The shape memory alloy is arranged on the outer side of the antisymmetric bistable cylindrical shell, so that the antisymmetric bistable cylindrical shell can be folded along one direction, presents two different stable states and does not need external force to maintain;
3) The invention organically combines the paper folding structure with the bistable material, designs a folding mechanism, has simple structure, convenient use, light weight and small volume, can realize intelligent control, and can be applied to various places.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of an antisymmetric bistable cylindrical shell;
FIG. 3 is a schematic diagram of a connection structure of a central solar panel and side solar panels in a folded state;
FIG. 4 is a schematic diagram of a connection structure of a central solar panel and side solar panels in an unfolded state;
FIG. 5 is a schematic view of the structure of the invention in its unfolded state;
in the figure: 2-solar panel main body, 21-central solar panel, 22-side solar panel, 3-antisymmetric bistable cylindrical shell, 4-screw, 5-shape memory alloy, 51-shape memory alloy strip.
Detailed Description
The invention is further described below with reference to the accompanying drawings, but the scope of the invention is not limited thereto:
as shown in fig. 1 to 5, a solar panel with a foldable bistable characteristic of the present invention comprises a solar panel main body 2 and an antisymmetric bistable cylindrical shell 3, wherein the solar panel main body 2 comprises a central solar panel 21 and side solar panels 22, four sides of the central solar panel 21 are respectively connected with one side solar panel 22 through the antisymmetric bistable cylindrical shell 3, the central solar panel 21 and the side solar panels 22 can rotate relatively, a shape memory alloy 5 is arranged on the outer side of the antisymmetric bistable cylindrical shell 3, and the shape recovery direction of the shape memory alloy 5 is consistent with the circumferential direction of the antisymmetric bistable cylindrical shell 3.
A central solar panel 21 and four side solar panels 22 are arranged in a cross shape with the central solar panel 21 as the center, the state of which is maintained by one stable state of the antisymmetric bistable cylindrical shell 3 without external force, the side solar panels 22 and the central solar panel 21 are connected by the antisymmetric bistable cylindrical shell 3, and the antisymmetric bistable cylindrical shell 3 and the central solar panel 21 and the side solar panel 22 are fixed by the screws 4, the shape memory alloy 5 of the antisymmetric bistable cylindrical shell 3 generates external force for the force required for deformation. When a force acts on the object, the object deforms, deformation energy is generated, and when the energy is at the lowest point, the second stable state is achieved.
The antisymmetric bistable cylindrical shell 3 is made of carbon fiber epoxy composite material, and the size of the antisymmetric bistable cylindrical shell is determined by the size and the quality of an actual solar panel. In the composite structure formed by three layers of carbon fiber epoxy composite materials, the fiber directions of two adjacent layers are different in the three layers of carbon fiber epoxy composite materials, and the two layers of carbon fiber epoxy composite materials are laid in an antisymmetric way, so that two stable states can be realized. Two ends of the antisymmetric bistable cylindrical shell 3 are respectively provided with a screw hole, so that the fixation is convenient.
The antisymmetric bistable cylindrical shell 3 has two different stable states, no external force is needed for maintenance, the stable state conversion is realized by the action of the shape memory alloy 5, when the external force acts, the antisymmetric bistable cylindrical shell 3 is deformed, the energy changes inside, and when the energy is at the lowest point, the energy changes to the second stable state. The shape memory alloy 5 is a NiTi shape memory alloy. The shape memory alloy 5 comprises a set of shape memory alloy strips 51, the shape memory alloy strips 51 being integrated with the antisymmetric bistable cylindrical shell 3.
The antisymmetric bistable cylindrical shell 3 requires a certain abrupt force to cause it to transition from the initial state to the second stable state, which abrupt force is achieved by applying an external force thereto.
The folding system is completed by switching the bistable cylindrical shell 3 between two stable states. The folded solar panels are 90 degrees, and the five solar panels are coplanar in the unfolded state.
The screw 4 is used for fixing the antisymmetric bistable cylindrical shell 3 and the central solar panel 21 and the side solar panels 22.
The folding function of the invention enables the anti-symmetrical bistable cylindrical shell 3 to be folded along the plane direction by applying external force, and presents two different stable states, thereby driving the central solar panel 21 and the side solar panels 22 to make relative movement to reach the appointed position, and then the folding function is maintained without external force; when the central solar panel 21 and the side solar panels 22 form 90 degrees, the volume of the spacecraft can be reduced, the cost is saved, and when the central solar panel 21 and the side solar panels 22 are unfolded, the preset working requirements can be met, and sufficient electric energy is provided. The folding mechanism has the advantages of simple structure, convenient use, light weight and small volume, and can be applied to other places, such as folding wings and the like.
Claims (7)
1. The solar panel with the foldable bistable characteristic is characterized by comprising a solar panel main body (2) and an antisymmetric bistable cylindrical shell (3), wherein the solar panel main body (2) comprises a central solar panel (21) and side solar panels (22), four sides of the central solar panel (21) are respectively connected with one side solar panel (22) through the antisymmetric bistable cylindrical shell (3), the central solar panel (21) and the side solar panels (22) can relatively rotate, a shape memory alloy (5) is arranged on the outer side of the antisymmetric bistable cylindrical shell (3), and the shape recovery direction of the shape memory alloy (5) is consistent with the annular direction of the antisymmetric bistable cylindrical shell (3).
2. A solar panel with a foldable bistable character according to claim 1, characterized in that the four sides of the central solar panel (21) are respectively provided with a screw hole, one side of the side solar panel (22) is provided with a screw hole, two ends of the antisymmetric bistable cylindrical shell (3) are respectively provided with a screw hole, and two ends of the antisymmetric bistable cylindrical shell (3) are respectively fixedly connected with the central solar panel (21) and the side solar panel (22) through screws (4).
3. A solar panel with a bi-stable character according to claim 1, characterized in that the anti-symmetrical bi-stable cylindrical shell (3) is made of carbon fiber epoxy composite material.
4. A solar panel with a bi-stable character folding according to claim 1, characterized in that the anti-symmetrical bi-stable cylindrical shell (3) is a composite structure of at least two layers of carbon fiber epoxy composite material.
5. A solar panel according to claim 4, wherein the adjacent layers of the composite structure of carbon fiber epoxy composite material are in different fiber directions and are in an anti-symmetrical lay.
6. A solar panel with a bi-stable character according to claim 1, characterized in that the shape memory alloy (5) comprises a set of shape memory alloy strips (51), the shape memory alloy strips (51) being integrated with the anti-symmetrical bi-stable cylindrical shell (3).
7. A solar panel foldable with bistable character according to claim 1, characterized in that the shape memory alloy (5) is NiTi shape memory alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044748.4A CN109586665B (en) | 2019-01-17 | 2019-01-17 | Foldable solar panel with bistable characteristic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044748.4A CN109586665B (en) | 2019-01-17 | 2019-01-17 | Foldable solar panel with bistable characteristic |
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| Publication Number | Publication Date |
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| CN109586665A CN109586665A (en) | 2019-04-05 |
| CN109586665B true CN109586665B (en) | 2024-03-01 |
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| CN201910044748.4A Active CN109586665B (en) | 2019-01-17 | 2019-01-17 | Foldable solar panel with bistable characteristic |
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| CN110215939A (en) * | 2019-04-30 | 2019-09-10 | 西南交通大学 | A kind of temperature-sensitive self assembly device based on shape memory polyurethane |
| CN111392029B (en) * | 2020-02-25 | 2022-04-08 | 浙江工业大学 | Pneumatic driven multistable structure |
| CN113709967B (en) * | 2021-09-07 | 2022-09-06 | 东莞市哲华电子有限公司 | High-thermal-conductivity composite copper foil capable of stretching under heating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN209218026U (en) * | 2019-01-17 | 2019-08-06 | 浙江工业大学 | One kind having bistable characteristic solar-powered collapsible plate |
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| CN101388417B (en) * | 2007-09-14 | 2011-06-08 | 鸿富锦精密工业（深圳）有限公司 | Solar cell component |
| FR2969985B1 (en) * | 2010-12-30 | 2016-09-09 | Thales Sa | SOLAR PLANAR GENERATOR |
| US10715078B2 (en) * | 2017-03-22 | 2020-07-14 | Sungeun K. Jeon | Compact, self-deploying structures and methods for deploying foldable, structural origami arrays of photovoltaic modules, solar sails, and antenna structures |
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| CN209218026U (en) * | 2019-01-17 | 2019-08-06 | 浙江工业大学 | One kind having bistable characteristic solar-powered collapsible plate |
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