阅读说明：本技术 全柔性自收展太阳阵 (Full flexible self-folding solar array ) 是由 韩鸣迪 邹兴 刘培 陈占胜 肖宁斌 赵卫红 周必磊 徐云东 赵传军 于 2021-09-10 设计创作，主要内容包括：本发明提供了一种涉及太阳电池阵领域的全柔性自收展太阳阵,包括采用全柔性材料的太阳电池电路、太阳电池片以及基板；太阳电池片铺贴在基板上,太阳电池电路电连接基板,太阳电池片与太阳电池电路电连接,太阳电池电路实现功率与信号的传输。本发明相对传统形式太阳电池阵具有质量轻、灵活性强、收拢体积小、可重复收展等优点,实现太阳电池阵的无缆化、轻量化、一体化、集成化设计,对未来空间太阳电池阵技术发展及应用具有重要意义。(The invention provides a full-flexible self-folding solar array relating to the field of solar arrays, which comprises a solar cell circuit, a solar cell sheet and a substrate, wherein the solar cell circuit is made of a full-flexible material; the solar cell is laid on the substrate, the solar cell circuit is electrically connected with the substrate, the solar cell is electrically connected with the solar cell circuit, and the solar cell circuit realizes the transmission of power and signals. Compared with the traditional solar cell array, the solar cell array has the advantages of light weight, strong flexibility, small furled volume, capability of being repeatedly furled and unfolded and the like, realizes the design of no cable, light weight, integration and integration of the solar cell array, and has important significance for the technical development and application of the future space solar cell array.)

1. A full-flexible self-folding solar array is characterized by comprising a solar cell circuit (1) made of a full-flexible material, a solar cell sheet (2) and a substrate (3); the solar cell piece (2) is paved and pasted on the substrate (3), the substrate (3) is electrically connected with the solar cell circuit (1), the solar cell piece (2) is electrically connected with the solar cell circuit (1), and the solar cell circuit (1) realizes the transmission of power and signals.

2. The fully flexible self-retracting solar array according to claim 1, characterized in that the solar cell circuit (1) is printed on the substrate (3) by means of a flexible printed board.

3. The fully flexible self-expanding solar array according to claim 2, wherein a space is left between two adjacent solar cells (2) to ensure the routing of the solar cell circuit (1).

4. The fully flexible self-retracting solar array according to claim 3, wherein a plurality of said solar cells (2) are distributed in an array on said substrate (3).

5. The fully flexible self-retracting solar array according to claim 4, wherein each two rows of said solar cells (2) are connected by a set of said solar cell circuits (1).

6. The fully flexible self-retracting solar array according to claim 5, wherein the positive and negative electrodes of the solar cells (2) are soldered to the pads reserved on the flexible printed board.

7. The fully flexible self-expanding solar array according to claim 6, wherein the solar cell (2) is fully flexible triple junction gallium arsenide.

8. The fully flexible self-retracting solar array according to claim 1, wherein a bending strip (4) is provided on the substrate (3), and the solar cell sheet (2) is not connected to the bending strip (4).

9. The fully flexible self-retracting solar array according to claim 8, characterized in that said substrate (3) is made of a shape memory flexible material.

10. The fully flexible self-retracting solar array according to claim 9, wherein the base plate (3) is self-retracting by a root-extending mechanism, such that the base plate (3) is movable between an extended state and a retracted state.

Technical Field

The invention relates to the field of solar cell arrays, in particular to a fully flexible self-folding solar array. In particular to a self-folding and full-flexible solar array.

Background

The vast majority of the spacecraft adopts a solar cell array to supply power, and the electric energy generated by the solar cell strings on the solar cell array is transmitted to the interior of the spacecraft through cables to be used by the spacecraft. The solar array is folded and unfolded through the root unfolding mechanism, the pressing and releasing mechanism, the inter-plate hinge and other components.

Most of solar cell arrays applied at present are rigid solar cell arrays, and with the development of the space solar cell array technology, the flexible solar cell array technology becomes the key development direction of the space solar cell array technology due to the advantages of small furled volume, large power-mass ratio and the like.

With the development of space science and technology, the requirements on the solar cell array technology are higher and higher, the solar cell array is required to be large in expansion area, high in output power, light in weight and the like, and the traditional rigid solar cell array cannot meet the requirements of future development. Therefore, the invention of the self-folding and fully-flexible solar cell array has important significance for the development and application of future solar cell array technology.

Through a search of the prior art, the comparative patent documents include:

the invention of Chinese patent document CN103595339A is named as a novel flexible solar cell array unfolding mechanism, and the patent mainly introduces that a solar array is unfolded and unlocked by using a synchronous stretching mechanism and a central driving mechanism, does not describe a flexible structure in the solar array, and has a more obvious unfolding and folding mode different from that of the patent.

The patent document CN104443439A entitled "flexible solar cell array with built-in folding and unfolding cell" describes that the solar cell array substrate is a flexible substrate, the solar cell circuit is highly integrated, the circuit of the whole solar cell array is inside the flexible substrate, and the solar cell array can realize folding and unfolding actions. The substrate, the solar cell piece and the solar cell circuit are obviously different in redesign.

Chinese patent document CN101118934A entitled "a flexible solar array device capable of being rolled and folded", which is a patent in which solar cells independently packaged in small areas are arranged in an array, and are bonded to a flexible base plate capable of being rolled and folded by using an adhesive, a flexible thin film with high light transmittance is covered on the solar cells, and positive and negative electrode pins of the solar cells are led out in series or in parallel through wires to form the whole flexible solar cell device. The substrate, the solar cell piece and the solar cell circuit are obviously different in redesign.

The patent document retrieval of the prior art finds that the Chinese invention patent publication number is CN201810708488.1, discloses an expandable solar cell array for a small satellite, belongs to the field of spacecraft structures and mechanisms, and has the characteristics of light weight, small unlocking impact, ground test reusability, short manufacturing period, low processing cost and the like; the use of the die can realize the beautiful and rapid manufacture of the mark. The foldable solar array is folded by the flexible pressing release device and fixed on a star body in the launching process, after the foldable solar array enters the orbit, the fusing type cutter works to cut off a rope in the flexible pressing release device and release the constraint on the solar array, the substrates of the solar array are connected by the unfolding locking mechanism, and the substrates are unfolded to the working position and locked under the action of a torsion spring. Compared with the traditional solar cell array, the solar cell array has the advantages of light weight, strong flexibility, small furled volume, capability of being repeatedly furled and unfolded and the like, and realizes the cable-free, light weight, integrated and integrated design of the solar cell array. Therefore, the method disclosed in the document and the invention belong to different inventive concepts.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a fully flexible self-folding solar array.

The invention provides a full-flexible self-folding solar array, which comprises a solar cell circuit, a solar cell piece and a substrate, wherein the solar cell circuit is made of a full-flexible material; the solar cell sheets are laid on the substrate, the solar cell circuit is electrically connected with the substrate, the solar cell sheets are electrically connected together through the solar cell circuit, and the solar cell circuit realizes the transmission of power and signals.

In some embodiments, the solar cell circuit is printed on the substrate by a flexible printed board.

In some embodiments, a space is left between two adjacent solar cells to ensure routing of the solar cell circuit.

In some embodiments, the plurality of solar cells are distributed on the substrate in an array.

In some embodiments, every two rows of solar cells are connected through a group of solar cell circuits.

In some embodiments, the positive electrode and the negative electrode of the solar cell are welded on the reserved welding disc of the flexible printed board.

In some embodiments, the solar cell is fully flexible triple junction gallium arsenide.

In some embodiments, the substrate is provided with a bending strip, and the solar cell is not connected to the bending strip.

In some embodiments, the substrate is made of a shape memory flexible material.

In some embodiments, the base plate is self-foldable by the root unfolding mechanism, so that the base plate can move between an unfolded state and a folded state.

Compared with the prior art, the invention has the following beneficial effects:

1. high power-to-mass ratio

The solar cell piece adopts the high photoelectric conversion efficiency triple junction gallium arsenide material, and simultaneously the base plate, the cell piece and the cell circuit all use flexible materials to carry out integrated processing, eliminate mechanisms such as compressing and releasing, improve the piece distribution rate of the base plate, effectively reduce the quality of the solar array, and fully improve the power-to-mass ratio of the solar array.

2. Small volume

The substrate, the cell and the circuit section of the solar cell array are thin and flat, and the light weight, the thinness and the flexibility of the substrate, the cell and the circuit section of the solar cell array enable the whole structure of the solar cell array to be more compact and reasonable. The space occupation of the rigid structure body of the substrate and each actuating mechanism is effectively eliminated, and the volume is obviously reduced.

3. High flexibility

The invention utilizes the flexible memory composite material, adjusts the deformation mode of the substrate according to the folding and unfolding requirements of the satellite, can fully realize the self-unfolding and folding of the solar array in the modes of folding, rolling and the like, and has high adaptability and strong flexibility.

4. High integration level

The solar cell circuit is printed on the surface of the substrate, and the flexible cell sheet is tightly attached to the substrate. The solar array is highly compact and integrated, and the problems of redundancy, hooking and the like of the traditional lead type solar cell circuit are effectively eliminated.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is an expanded view of the present invention;

FIG. 2 is a schematic view of the present invention showing the crimping step;

fig. 3 is a schematic view of the present invention.

Reference numbers in the figures:

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

Example 1

A full flexible self-folding solar array comprises a solar cell circuit 1, a solar cell sheet 2 and a substrate 3, wherein the solar cell circuit is made of full flexible materials; the substrate 3 is a carrier for the solar cell sheet 2 and the solar cell circuit 1, the solar cell sheet 2 is laid on the substrate 3, the solar cell circuit 1 is electrically connected to the substrate 3, the solar cell sheet 2 is electrically connected to the solar cell circuit 1, and preferably, the solar cell sheets 2 are electrically connected together through the solar cell circuit 1. The solar cell circuit 1 realizes the transmission of power and signals. Preferably, a plurality of solar cells 2 are distributed on the substrate 3 in an array, and every two rows of solar cells 2 are communicated through one group of solar cell circuit 1.

In which the solar cell circuit 1 is printed on the substrate 3 by means of a flexible printed board. In transmitting the signal that solar wafer 2, the taiyang sent to the spacecraft, flexible printed board and base plate 3 integration nature is high, and the bending characteristic is strong, has avoided the hook problem of traditional solar cell circuit cable, realizes that solar cell circuit 1 integrates, the no cable ization, is favorable to the solar array mass production.

Wherein, the positive and negative electrodes of the solar cell piece 2 are welded on the welding disc reserved on the flexible printed board. And a space is reserved between every two adjacent solar cells 2, so that the routing of the solar cell circuit 1 is ensured. The substrate 3 is provided with a bending strip 4, and the solar cell slice 2 is forbidden to be connected on the bending strip 4 so as to be bent freely. The solar cell 2 is made of fully flexible triple-junction gallium arsenide and is tightly adhered to the substrate 3, photoelectric conversion efficiency is high, adhesiveness is strong, bending deformation consistency is good, and the shape can be changed at will according to the requirements of solar array folding and unfolding.

Wherein, the substrate 3 is made of shape memory flexible material. The shape of the base plate 3 is changed along with the set environmental excitation, the generated deformation stress is large, the plasticity is high, and the base plate 3 simultaneously replaces a pressing release mechanism of a solar array to realize the self-folding and unfolding of the solar array. The base plate 3 is automatically folded and unfolded through the root unfolding mechanism, so that the base plate 3 moves between the unfolding state and the folding state, multiple folding and unfolding forms such as solar array folding and curling are realized, multiple folding and unfolding can be carried out, and the interference avoidance capability of the spacecraft in space is effectively improved.

Example 2

This embodiment is completed on the basis of embodiment 1, and is a preferred embodiment of the present invention, and the specific steps for preparing the solar array are as follows:

s1: the area of the solar cell array is designed according to the energy requirement of the spacecraft, and the unfolding and folding modes and the folding size of the solar cell array are designed according to the constraints of the orbit, the outer envelope, the view field and the like of the spacecraft.

S2: the size, the structural form and the environmental excitation of the solar array substrate 3 are set through the determination of the solar array area and the unfolding mode.

S3: according to the size and the folding form of the substrate 3, the two-dimensional layout of the solar battery pieces 2 is carried out, reasonable space needs to be reserved between the solar battery pieces, the wiring of a solar battery circuit is ensured, and meanwhile, the arrangement of the pieces is forbidden at the bending position of the substrate.

S4: according to the two-dimensional layout of the solar cell, the layout of the flexible printed circuit board solar cell circuit 1 is carried out, and the designed flexible printed circuit is printed on the solar array substrate 3.

S5: according to the printing position of the flexible printed circuit board solar cell circuit 1 and the cell piece layout, the solar cell piece 2 is attached to the solar array substrate 3, and meanwhile, the anode and the cathode of the cell piece 2 are welded on the reserved welding pads of the flexible printed circuit board 1.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred 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 application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.