Folding array structure of space solar power station and space solar power station

Abstract

The invention discloses a folding array structure of a space solar power station and the space solar power station, the folding array structure comprises a control system, a driving assembly and a plurality of energy conversion units in matrix distribution, the plurality of energy conversion units are connected with each other to form a triple folding structure, and the driving assembly is connected with the triple folding structure; the control system is used for controlling the driving assembly to drive the Mipu folding structure to move to unfold or fold; the energy conversion unit comprises a frame body, a lens, a photovoltaic cell, an antenna substrate and an antenna radiation unit, the lens and the photovoltaic cell are both installed on the frame body, the lens and the photovoltaic cell are oppositely arranged, the antenna substrate is connected with the frame body, and the antenna radiation unit is installed on the antenna substrate and electrically connected with the photovoltaic cell. Therefore, the size of the array structure can be reduced by folding the array structure, and the array structure is more convenient to store and transport.

Description

Technical Field

[0001] The invention belongs to the technical field of space solar energy, and in particular relates to a foldable array structure of a space solar power station and a space solar power station. Background Art

[0002] Space solar power stations are a type of power system that uses solar energy collection equipment in geosynchronous orbit to convert solar energy into electrical energy and transmit the energy to the ground through microwaves or lasers. Space solar power stations have the advantages of being unaffected by climate, having a long energy collection time and a high energy collection rate, and are gradually becoming one of the new energy sources that people are paying more and more attention to.

[0003] At present, the common space solar power station is a distributed rope-tethered solar power station, which includes a unit panel and a satellite platform, and the unit panel and the satellite platform are connected by ropes. Among them, the unit panel is composed of multiple sub-array structures, each of which is provided with multiple energy conversion units distributed in a matrix, and the energy conversion unit is composed of solar cells, microwave conversion devices and transmitting antennas. With this structure, solar cells can absorb sunlight and convert it into electrical energy, microwave conversion devices can convert electrical energy into microwaves, and transmitting antennas can transmit microwaves to the power system on the ground, and the ground power system can convert microwaves into electrical energy for transmission, thereby realizing the conversion and utilization of solar energy. However, the overall size of the above-mentioned sub-array structure is relatively large, which makes the sub-array structure inconvenient to store and transport, and further makes the space solar power station inconvenient to store and transport. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a foldable array structure of a space solar power station and a space solar power station. The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0005] In the first aspect, the present invention provides a foldable array structure of a space solar power station, including a control system, a driving component and a plurality of energy conversion units distributed in a matrix, the plurality of energy conversion units are connected to each other to form a Miura folding structure, and the driving component is connected to the Miura folding structure; the control system is used to control the driving component to drive the Miura folding structure to move to expand or fold; the energy conversion unit includes a frame, a lens, a photovoltaic cell, an antenna substrate and an antenna radiation unit, the lens and the photovoltaic cell are both mounted on the frame, the lens and the photovoltaic cell are arranged opposite to each other, the antenna substrate is connected to the frame, and the antenna radiation unit is mounted on the antenna substrate and electrically connected to the photovoltaic cell.

[0006] In one embodiment of the present invention, two adjacent energy conversion units distributed along a first direction are connected by a door hinge; two adjacent energy conversion units distributed along a second direction are connected by a spring hinge; the first direction and the second direction are perpendicular to each other.

[0007] In one embodiment of the present invention, a plurality of spring hinges are provided along the first direction, and the lengths of the plurality of spring hinges decrease gradually.

[0008] In one embodiment of the present invention, the energy conversion unit also includes at least two driving mechanisms, one end of the driving mechanism is connected to the frame, and the other end is connected to the antenna substrate, the antenna substrate and the frame are connected through the driving mechanism, and at least two driving mechanisms are arranged in sequence along the length direction of the antenna substrate; the driving mechanism is used to drive the antenna substrate and the frame to be relatively close or away to adjust the tilt angle of the lens, and / or adjust the tilt angle of the antenna radiation unit.

[0009] In one embodiment of the present invention, the driving mechanism includes an upper plate, a lower plate and six linear actuators, one end of the linear actuator is connected to the upper plate, and the other end is connected to the lower plate, and the six linear actuators are arranged in sequence along the circumference of the upper plate; the upper plate is an integral structure with the frame or is fixedly connected to the frame, and the lower plate is an integral structure with the antenna substrate or is fixedly connected to the antenna substrate.

[0010] In one embodiment of the present invention, the energy conversion unit also includes at least two heat sinks, which are fixedly connected to the driving mechanism. The at least two heat sinks are arranged in sequence along a direction perpendicular to the upper surface of the antenna substrate, and a heat dissipation gap exists between two adjacent heat sinks.

[0011] In one embodiment of the present invention, the frame includes a supporting plate and a bracket, the photovoltaic cell is mounted on the supporting plate, the bracket is connected to the supporting plate, the lens is mounted on the bracket, a plurality of photovoltaic cells are provided, the lens includes a plurality of lenses, one lens corresponds to one photovoltaic cell, and the height of the bracket is equal to the focal length of the lens; the side of the lens close to the photovoltaic cell includes a curved portion and a serrated portion, the curved portion is arranged at the axis of the lens, and the serrated portion includes a plurality of teeth extending radially along the lens; the supporting plate is a honeycomb aluminum plate, and at least two heat dissipation pipes are buried in the supporting plate.

[0012] In one embodiment of the present invention, it further comprises a first detection device disposed on the frame, the first detection device is connected to the control system, the first detection device is used to detect the incident angle of sunlight, and the control system is used to control the driving mechanism to drive the frame to move and tilt according to the detection result of the first detection device, so as to adjust the tilt angle of the lens;

[0013] And / or, the foldable array structure also includes a second detection device arranged on the antenna substrate, the second detection device is connected to the control system, the second detection device is used to detect the propagation direction of the electromagnetic wave, and the control system is used to control the driving mechanism to drive the antenna substrate to move and tilt according to the detection result of the second detection device, so as to adjust the inclination angle of the antenna substrate.

[0014] In one embodiment of the present invention, a feeder is further provided on the antenna substrate, one end of the feeder is electrically connected to the photovoltaic cell, and the other end of the feeder is connected to the antenna radiation unit;

[0015] The antenna substrate is also provided with a plurality of through holes, which are arranged in sequence along the length direction of the feeder line, and the plurality of through holes form a ring structure surrounding the feeder line.

[0016] In a second aspect, the present invention provides a space solar power station, comprising at least two foldable array structures of the space solar power station provided in the above solution, and at least two foldable array structures are distributed in a matrix.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the above scheme of the present application, first, the foldable array structure includes a control system, a driving component, and a plurality of energy conversion units distributed in a matrix, the plurality of energy conversion units are connected to each other to form a Miura folding structure, and the driving component is connected to the Miura folding structure; the control system is used to control the driving component to drive the Miura folding structure to move, expand or fold. In this way, when the array structure needs to be stored and transported, the control system can control the driving component to drive the Miura folding structure to move and fold, thereby reducing the volume of the array structure, making the storage and transportation of the array structure more convenient, and further making the storage and transportation of the space solar power station more convenient; when the array structure needs to absorb sunlight for energy conversion, the control system can control the driving component to drive the Miura folding structure to move and expand, so that the energy conversion unit in the array structure can absorb sunlight for energy conversion and transmission, ensuring that the space solar power station can work normally.

[0019] Secondly, the energy conversion unit includes a frame, a lens, a photovoltaic cell, an antenna substrate and an antenna radiation unit. The lens and the photovoltaic cell are both mounted on the frame, the lens and the photovoltaic cell are arranged opposite to each other, the antenna substrate is connected to the frame, and the antenna radiation unit is mounted on the antenna substrate and electrically connected to the photovoltaic cell. In this way, when sunlight passes through the lens and shines on the photovoltaic cell, the photovoltaic cell can convert light energy into electrical energy and transmit it to the antenna radiation unit, the antenna radiation unit can convert electrical energy into electromagnetic waves and transmit it to the ground power system, and the ground power system can receive the electromagnetic waves and convert them into electrical energy for transmission, thereby realizing the conversion and utilization of solar energy.

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a foldable array structure provided by an embodiment of the present invention;

[0022] Figure 2is a three-dimensional schematic diagram of an energy conversion unit in an embodiment of the present invention;

[0023] Figure 3 Schematic diagram of an energy conversion unit in an embodiment of the present invention Figure 1 ;

[0024] Figure 4 Schematic diagram of an energy conversion unit in an embodiment of the present invention Figure 2 ;

[0025] Figure 5 is a three-dimensional schematic diagram of a foldable array structure provided by an embodiment of the present invention Figure 1 ;

[0026] Figure 6 is a three-dimensional schematic diagram of a foldable array structure provided by an embodiment of the present invention Figure 2 ;

[0027] Figure 7 is a schematic diagram of a driving mechanism in an embodiment of the present invention;

[0028] Figure 8 is a schematic diagram of a lens and a photovoltaic cell in an embodiment of the present invention;

[0029] Fig. 9 is a schematic diagram of an antenna substrate and an antenna radiating unit in an embodiment of the present invention;

[0030] Fig.10 It is a schematic diagram of an energy conversion unit, a foldable array structure and a space solar power station in an embodiment of the present invention.

[0031] Figure numerals: 1-array structure, 11-mountain fold, 12-valley fold, 2-energy conversion unit, 21-frame, 211-carrying plate, 212-bracket, 22-lens, 221-curved portion, 222-serrated portion, 23-photovoltaic cell, 24-antenna substrate, 241-feeder, 242-through hole, 25-antenna radiation unit, 3-door hinge, 4-spring hinge, 5-driving mechanism, 51-upper plate, 52-lower plate, 53-linear actuator, 6-heat sink, 7-heat dissipation pipeline, 8-space solar power station. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.

[0033] Embodiment 1:

[0034] See also Figure 1 , Figure 2 , Figure 3 and Figure 4An embodiment of the present invention provides a foldable array structure 1 of a space solar power station, including a control system, a driving component, and a plurality of energy conversion units 2 distributed in a matrix, wherein the plurality of energy conversion units 2 are connected to each other to form a Miura folding structure, and the driving component is connected to the Miura folding structure; the control system is used to control the driving component to drive the Miura folding structure to move, expand or collapse; the energy conversion unit 2 includes a frame 21, a lens 22, a photovoltaic cell 23, an antenna substrate 24, and an antenna radiation unit 25, wherein the lens 22 and the photovoltaic cell 23 are both mounted on the frame 21, the lens 22 and the photovoltaic cell 23 are arranged opposite to each other, the antenna substrate 24 is connected to the frame 21, and the antenna radiation unit 25 is mounted on the antenna substrate 24 and is electrically connected to the photovoltaic cell 23.

[0035] In some embodiments of the present application, the above-mentioned Miura folding structure is a structure that is folded or unfolded based on the Miura folding principle.

[0036] In some embodiments of the present application, the number of energy conversion units 2 in the above array structure 1 is not limited and may be 4, 6, 9, etc.

[0037] In some embodiments of the present application, the above-mentioned Miura folding structure includes energy conversion units 2 distributed in N rows and M columns, where N and M are both greater than 1. Among them, the energy conversion units 2 in the second column to the M-1 column can be parallelogram structures, and the energy conversion units 2 in the first column and the Mth column can be right-angled trapezoidal structures. A valley fold 12 or a mountain fold 11 is formed between two adjacent energy conversion units 2. The valley fold 12 refers to the end of the energy conversion unit 2 close to the valley fold 12, which is folded toward the lower surface side of the array structure 1, and the mountain fold 11 refers to the end of the energy conversion unit 2 close to the mountain fold 11, which is folded toward the upper surface side of the array structure 1.

[0038] Specifically, the energy conversion units 2 with N rows and M columns can form N-1 rows and M-1 columns of folds, wherein the types of folds in two adjacent columns are different, i.e., the folds in one column are valley folds 12, and the folds in the other column are mountain folds 11. In a single row, the types of folds corresponding to two groups of energy conversion units 2 are different, i.e., one fold is a valley fold 12, and the other fold is a mountain fold 11; in two adjacent rows, the types of folds corresponding to two groups of energy conversion units 2 are different, i.e., one fold is a valley fold 12, and the other fold is a mountain fold 11. Figure 1 As shown, the valley crease 12 is Figure 1 The dashed line is used to indicate the mountain fold 11. Figure 1 Indicated by solid lines.

[0039] For example, the number of energy conversion units 2 in the array structure 1 in the embodiment of the present application can be 35, and the 35 energy conversion units 2 are distributed in a matrix of 5 rows and 7 columns. The 35 energy conversion units 2 are connected to each other to form a Miura folding structure, and 4 rows and 6 columns of folds are formed between the 5 rows and 7 columns of energy conversion units 2. Among them, the energy conversion units 2 in the second to sixth columns can be parallelogram structures, and the energy conversion units 2 in the first and seventh columns can be right-angled trapezoidal structures. The energy conversion units 2 in two adjacent rows are symmetrically distributed. Figure 1 As shown, the folds of the first, third and fifth columns are valley folds 12, and the folds of the second, fourth and sixth columns are mountain folds 11; a valley fold 12 is provided between the first energy conversion unit 2 of the first row and the first energy conversion unit 2 of the second row, the valley folds 12 and the mountain folds 11 in each row are arranged alternately, and the valley folds 12 and the mountain folds 11 in two adjacent rows are arranged alternately. In this way, when the array structure 1 is folded according to the valley folds 12 and the mountain folds 11, it can be unfolded or folded based on the Miura folding principle.

[0040] In some embodiments of the present application, the control system may be a central processing unit (CPU) or the like.

[0041] In some embodiments of the present application, the above-mentioned driving assembly may be a linear driving assembly, such as an electric push rod, a hydraulic push rod, etc. The two ends of the linear driving assembly are respectively connected to the two diagonal positions of the array structure 1, so that the linear driving assembly can drive the two diagonal positions of the array structure 1 to move relative to each other, thereby realizing the folding or folding of the array structure 1.

[0042] In some embodiments of the present application, the photovoltaic cell 23 may be a triple-junction gallium arsenide cell. Since the triple-junction gallium arsenide cell has the advantages of high photoelectric conversion efficiency, high temperature resistance, good radiation resistance, and light volume, it can improve the conversion efficiency of the energy conversion unit 2, thereby improving the power supply efficiency of the space solar power station.

[0043] In some embodiments of the present application, the lens 22 may be a focusing convex lens 22 .

[0044] In the above scheme of the present application, first, the array structure 1 includes a control system, a driving component and a plurality of energy conversion units 2 distributed in a matrix, the plurality of energy conversion units 2 are connected to each other to form a Miura folding structure, and the driving component is connected to the Miura folding structure; the control system is used to control the driving component to drive the Miura folding structure to move, expand or fold. In this way, when the array structure 1 needs to be stored and transported, the control system can control the driving component to drive the Miura folding structure to move and fold, thereby reducing the volume of the array structure 1, making the storage and transportation of the array structure 1 more convenient, and further making the storage and transportation of the space solar power station more convenient; when the array structure 1 needs to absorb sunlight for energy conversion, the control system can control the driving component to drive the Miura folding structure to move and expand, so that the energy conversion unit 2 in the array structure 1 can absorb sunlight for energy conversion and transmission, ensuring that the space solar power station can work normally.

[0045] Secondly, the energy conversion unit 2 includes a frame 21, a lens 22, a photovoltaic cell 23, an antenna substrate 24 and an antenna radiation unit 25. The lens 22 and the photovoltaic cell 23 are both mounted on the frame 21. The lens 22 and the photovoltaic cell 23 are arranged opposite to each other. The antenna substrate 24 is connected to the frame 21. The antenna radiation unit 25 is mounted on the antenna substrate 24 and is electrically connected to the photovoltaic cell 23. In this way, when sunlight passes through the lens 22 and irradiates the photovoltaic cell 23, the photovoltaic cell 23 can convert light energy into electrical energy and transmit it to the antenna radiation unit 25. The antenna radiation unit 25 can convert electrical energy into electromagnetic waves and transmit them to the ground power system. The ground power system can receive the electromagnetic waves and convert them into electrical energy for transmission, thereby realizing the conversion and utilization of solar energy.

[0046] In some embodiments of the present application, Figure 1 , Figure 5 and Figure 6 As shown, two adjacent energy conversion units 2 distributed along the first direction are connected by a door hinge 3; two adjacent energy conversion units 2 distributed along the second direction are connected by a spring hinge 4; the first direction and the second direction are perpendicular to each other. In this way, the two adjacent energy conversion units 2 are connected by the door hinge 3 or the spring hinge 4, which can improve the overall stability of the array structure 1; and when the array structure 1 is folded, the two energy conversion units 2 along the first direction can rotate and fit under the action of the door hinge 3, and the two energy conversion units 2 along the second direction can drive the spring hinge 4 to move and deform, so that the array structure 1 can be folded normally, avoiding the two door hinges 3 being mutually limited and affecting the normal folding of the array structure 1 when the two energy conversion units 2 in the first direction and the two energy conversion units 2 in the second direction are both connected by the door hinge 3. In addition, the elastic effect of the spring hinge 4 itself can be used to enable the folded array structure 1 to be quickly unfolded, thereby improving the unfolding speed of the array structure 1.

[0047] In some embodiments of this application, see Figure 1 , the first direction is Figure 1 The direction x in the diagram is the row arrangement direction of the energy conversion unit 2, and the second direction is Figure 1 The direction y in the diagram is the column arrangement direction of the energy conversion unit 2.

[0048] In some embodiments of the present application, along the first direction, one of the two adjacent door hinges 3 is arranged on one side of the upper surface of the array structure 1, and the other is arranged on one side of the lower surface of the array structure 1. Along the second direction, one of the two adjacent spring hinges 4 is arranged on one side of the upper surface of the array structure 1, and the other is arranged on one side of the lower surface of the array structure 1. The upper surface of the array structure 1 refers to the side surface of the lens 22 in the energy conversion unit 2 away from the photovoltaic cell 23, and the lower surface of the array structure 1 refers to the side surface of the antenna substrate 24 in the energy conversion unit 2 away from the frame 21.

[0049] In some embodiments of the present application, a plurality of spring hinges 4 are provided along the first direction, and the lengths of the plurality of spring hinges 4 gradually decrease. It is understandable that when the array structure 1 is folded along the first direction, the energy conversion units 2 of the first column are located at the innermost side, the energy conversion units 2 of the second column are surrounded by the energy conversion units 2 of the first column, and so on. Therefore, the folding angle of the energy conversion units 2 of the latter column will be smaller than the folding angle of the energy conversion units 2 of the previous column. In this way, when the lengths of the plurality of spring hinges 4 gradually decrease along the first direction, it is possible to ensure that the array structure 1 is folded normally while reducing the cost of the spring hinges 4; in addition, after the size of the spring hinges 4 is reduced, the space occupied by the spring hinges 4 can be reduced to avoid the space occupied by the spring hinges 4 being too large and affecting the folding of the array structure 1.

[0050] In some embodiments of this application, see Figure 3 and Figure 4The energy conversion unit 2 further includes at least two driving mechanisms 5, one end of the driving mechanism 5 is connected to the frame 21, and the other end is connected to the antenna substrate 24. The antenna substrate 24 and the frame 21 are connected through the driving mechanism 5, and at least two driving mechanisms 5 are sequentially arranged along the length direction of the antenna substrate 24; the driving mechanism 5 is used to drive the antenna substrate 24 and the frame 21 to move relatively close to or away from each other, so as to adjust the tilt angle of the lens 22, and / or adjust the tilt angle of the antenna radiation unit 25. In this way, when the incident angle of sunlight passing through the lens 22 is not a right angle, the frame 21 can be driven by at least two driving mechanisms 5 to move relative to the antenna substrate 24, so as to adjust the tilt angle of the lens 22, so that the sunlight enters the lens 22 in a direction perpendicular to the surface of the lens 22, thereby increasing the intensity and illumination area of ​​the sunlight irradiated on the photovoltaic cell 23, thereby increasing the photoelectric conversion efficiency of the photovoltaic cell 23, and thereby increasing the power generation efficiency of the array structure 1. When the propagation direction of the electromagnetic wave is not perpendicular to the antenna radiating unit 25 on the antenna substrate 24, the antenna substrate 24 can be driven to move relative to the frame 21 by at least two driving mechanisms 5 to adjust the inclination angle of the antenna substrate 24 so that the propagation direction of the electromagnetic wave can be perpendicular to the antenna radiating unit 25 on the antenna substrate 24, thereby increasing the power of the electromagnetic wave and increasing the signal strength.

[0051] In some embodiments of the present application, the number of the driving mechanisms 5 may be two, and the two driving mechanisms 5 are arranged on two sides of the antenna substrate 24 opposite to each other.

[0052] In some embodiments of this application, see Figure 7 The driving mechanism 5 includes an upper plate 51, a lower plate 52 and six linear actuators 53. One end of the linear actuator 53 is connected to the upper plate 51, and the other end is connected to the lower plate 52. The six linear actuators 53 are arranged in sequence along the circumference of the upper plate 51. The upper plate 51 is an integral structure with the frame 21 or is fixedly connected to the frame 21, and the lower plate 52 is an integral structure with the antenna substrate 24 or is fixedly connected to the antenna substrate 24. In this way, when the upper plate 51 and the lower plate 52 are driven to move relative to each other by the six linear actuators 53, the upper plate 51 and the lower plate 52 can achieve six-degree-of-freedom movement. That is, taking the rectangular coordinate system xyz as an example, the upper plate 51 and the lower plate 52 have the degrees of freedom of movement in the directions of the three rectangular coordinate axes x, y, and z and the degrees of freedom of rotation around these three coordinate axes. Thereby, the freedom of movement of the upper plate 51 and the lower plate 52 can be improved, so that the frame 21 and the substrate can be rotated at any angle, thereby ensuring that sunlight can enter the lens 22 in a direction perpendicular to the surface of the lens 22, improving the photoelectric conversion efficiency of the photovoltaic cell 23, and ensuring that the propagation direction of the electromagnetic wave is perpendicular to the antenna radiation unit 25 on the antenna substrate 24, thereby improving the signal strength.

[0053] In some embodiments of the present application, the linear actuator 53 may be an electric push rod, a hydraulic push rod, or the like.

[0054] In some embodiments of the present application, the energy conversion unit further includes at least two heat sinks 6, which are fixedly connected to the driving mechanism 5, and at least two heat sinks 6 are arranged in sequence in a direction perpendicular to the upper surface of the antenna substrate 24, and there is a heat dissipation gap between two adjacent heat sinks 6. In this way, the heat sink 6 can increase the heat dissipation area of ​​the energy conversion power source, increase the heat exchange rate between the photovoltaic cell 23 and the sky environment, thereby improving the heat dissipation efficiency of the photovoltaic cell 23 and avoiding high temperature failure of the photovoltaic cell 23.

[0055] In some embodiments of this application, see Figure 3 , Figure 4 and Figure 8 The frame 21 includes a carrier plate 211 and a bracket 212, the photovoltaic cell 23 is mounted on the carrier plate 211, the bracket 212 is connected to the carrier plate 211, the lens 22 is mounted on the bracket 212, a plurality of photovoltaic cells 23 are provided, the lens 22 includes a plurality of lenses 22, one lens 22 corresponds to one photovoltaic cell 23, and the height of the bracket 212 is equal to the focal length of the lens 22; the side of the lens 22 close to the photovoltaic cell 23 includes a curved portion 221 and a sawtooth portion 222, the curved portion 221 is arranged at the axis of the lens 22, and the sawtooth portion 222 includes a plurality of teeth extending radially along the lens 22; the carrier plate 211 is a honeycomb aluminum plate, and at least two heat dissipation pipelines 7 are buried in the carrier plate 211.

[0056] It is understandable that when one lens 22 corresponds to one photovoltaic cell 23, multiple lenses 22 can be used to converge light to the corresponding photovoltaic cell 23, thereby improving the photoelectric conversion efficiency of the photovoltaic cell 23. The height of the bracket 212 is equal to the focal length of the lens 22, so that the light coming out of the lens 22 can be focused on the photovoltaic cell 23, further improving the photoelectric conversion efficiency of the photovoltaic cell 23. When the side of the lens 22 close to the photovoltaic cell 23 includes a curved portion 221 and a sawtooth portion 222, the lens 22 can be a Fresnel lens 22, and the light can be refracted multiple times on the sawtooth portion 222 and converged on the photovoltaic cell 23, thereby improving the focusing effect of the lens 22, and further improving the photoelectric conversion efficiency of the photovoltaic cell 23. When the carrier plate 211 is a honeycomb aluminum plate, it can not only reduce the weight of the carrier plate 211, facilitate the transportation of the array structure 1, but also use the heat dissipation gap in the honeycomb aluminum plate to dissipate heat, thereby improving the heat dissipation effect of the array structure 1. When at least two heat dissipation pipelines 7 are embedded in the carrier plate 211 , further heat dissipation can be performed through the at least two heat dissipation pipelines 7 , thereby further improving the heat dissipation effect of the array structure 1 .

[0057] In an optional example, the array structure 1 further includes a first detection device disposed on the frame 21, the first detection device is connected to the control system, the first detection device is used to detect the incident angle of sunlight, and the control system is used to control the driving mechanism 5 to drive the frame 21 to move and tilt according to the detection result of the first detection device, so as to adjust the tilt angle of the lens 22. In this way, by detecting the incident angle of sunlight through the first detection device, and by controlling the driving mechanism 5 to drive the frame 21 to move and tilt according to the detection result of the first detection device through the control system, it is possible to ensure that sunlight enters the lens 22 in a direction perpendicular to the surface of the lens 22, thereby increasing the intensity and illumination area of ​​sunlight irradiated on the photovoltaic cell 23, thereby increasing the photoelectric conversion efficiency of the photovoltaic cell 23, and thereby increasing the power generation efficiency of the array structure 1.

[0058] In some embodiments of the present application, the first detection device may include a processor and multiple light sensors, and the multiple photoelectric sensors are set at different positions. The multiple photoelectric sensors respectively collect sunlight at different positions at the same time, and transmit the collected signal values ​​to the processor. The processor can calculate the incident angle of sunlight based on the setting positions of the multiple light sensors and the signal values ​​collected by each. Alternatively, the first detection device may include a spherical frame, a solar panel, and a voltage monitoring and comparison device. The spherical frame is evenly distributed with multiple solar panels, and the panel surface of each solar panel is perpendicular to the radius of the sphere. The voltage monitoring and comparison device can calculate the incident angle of sunlight by comparing the voltage signals of each solar panel. Alternatively, the first detection device can be a solar sensor, and the incident angle of sunlight can be directly obtained through the solar sensor.

[0059] In another optional example, the array structure 1 further includes a second detection device disposed on the antenna substrate 24, the second detection device is connected to the control system, the second detection device is used to detect the propagation direction of the electromagnetic wave, and the control system is used to control the driving mechanism 5 to drive the antenna substrate 24 to move and tilt according to the detection result of the second detection device, so as to adjust the tilt angle of the antenna substrate 24. In this way, the propagation direction of the electromagnetic wave is detected by the second detection device, and the control system controls the driving mechanism 5 to drive the antenna substrate 24 to move and tilt according to the detection result of the second detection device, so as to adjust the tilt angle of the antenna substrate 24, so that the propagation direction of the electromagnetic wave can be perpendicular to the antenna radiation unit 25 on the antenna substrate 24, thereby increasing the power of the electromagnetic wave and increasing the signal strength.

[0060] In another possible example, the array structure 1 also includes a first detection device arranged on the frame 21 and a second detection device arranged on the antenna substrate 24, the first detection device is connected to the control system, the first detection device is used to detect the incident angle of sunlight, and the control system is used to control the driving mechanism 5 to drive the frame 21 to move and tilt according to the detection result of the first detection device, so as to adjust the inclination angle of the lens 22; the second detection device is connected to the control system, the second detection device is used to detect the propagation direction of the electromagnetic wave, and the control system is used to control the driving mechanism 5 to drive the antenna substrate 24 to move and tilt according to the detection result of the second detection device, so as to adjust the inclination angle of the antenna substrate 24.

[0061] In some embodiments of the present application, the second detection device may be a small radar, and a receiving end of the small radar is provided with multiple antennas. The small radar may calculate the propagation direction of the battery wave based on the phase difference between the signals received by each antenna. Alternatively, the small radar may calculate the propagation direction of the battery wave based on the time difference between the target reflected signals received by multiple antennas.

[0062] In some embodiments of this application, see Fig. 9 , a feeder 241 is also provided on the antenna substrate 24, one end of the feeder 241 is electrically connected to the photovoltaic cell 23, and the other end is connected to the antenna radiation unit 25; a plurality of through holes 242 are also provided on the antenna substrate 24, and the plurality of through holes 242 are sequentially arranged along the length direction of the feeder 241, and the plurality of through holes 242 form a ring structure surrounding the feeder 241. In this way, the antenna radiation unit 25 can be electrically connected to the photovoltaic cell 23 through the feeder 241, so that the current generated by the photovoltaic cell 23 can be transmitted to the antenna radiation unit 25, ensuring that the electric energy generated by the photovoltaic cell 23 can be converted into microwave energy. The ring structure surrounding the feeder 241 formed by the plurality of through holes 242 can not only avoid the mutual coupling phenomenon between the two feeders 241, which affects the radiation field of the antenna radiation unit 25, but also suppress the energy leakage of the feeder 241, ensuring the energy intensity radiated by the antenna radiation unit 25.

[0063] In some embodiments of the present application, there are 400 lenses in the energy conversion unit, each lens is only 50 mm long and wide, there are 400 photovoltaic cells in the energy conversion unit, each lens is only 25 mm long and wide, and the photovoltaic cells correspond to the lenses one by one. Table 1 shows the first ten frequencies of a single energy conversion unit under free vibration.

[0064] Table 1:

[0065] Mode / Order 1-6 7 8 9 10 Frequency / HZ 0 1.521 3.142 3.142 3.768

[0066] From Table 1 above, it can be seen that the frequency of the energy conversion unit in the first six orders is 0, the frequency of the seventh order is 1.521 Hz, the frequency of the eighth order is 3.142 Hz, the frequency of the ninth order is 3.142 Hz, and the frequency of the tenth order is 3.768 Hz. It can be seen that the frequency variation of the energy conversion unit under free vibration is small, and the stiffness and stability of the energy conversion unit are good.

[0067] In some embodiments of the present application, there are 100 energy conversion units in the array structure, and the length and width of each energy conversion unit are only 1 meter. Table 1 shows the first ten frequencies of the array structure under free vibration.

[0068] Table 2:

[0069] Mode / Order 1-6 7 8 9 10 Frequency / HZ 0 0.137 0.138 0.372 0.378

[0070] From Table 2 above, we can see that the frequency of the array structure in the first six orders is 0, the frequency of the seventh order is 0.137Hz, the frequency of the eighth order is 0.138Hz, the frequency of the ninth order is 0.372Hz, and the frequency of the tenth order is 0.378Hz. It can be seen that the frequency variation of the array structure under free vibration is small, and the stiffness and stability of the array structure are good.

[0071] Embodiment 2:

[0072] like Fig.10 As shown, an embodiment of the present invention provides a space solar power station 8, comprising at least two foldable array structures of the space solar power station 8 provided in any one of the above-mentioned embodiment 1, and at least two foldable array structures 1 are distributed in a matrix.

[0073] The beneficial effects of the second embodiment of the present invention and its various implementations can be analyzed by referring to the beneficial effects of the first embodiment and its various implementations, and will not be described in detail here.

[0074] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0075] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0076] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A foldable array structure of a space solar power station, characterized in that: It includes a control system, a driving component and a plurality of energy conversion units distributed in a matrix, wherein the plurality of energy conversion units are connected to each other to form a Miura folding structure, and the driving component is connected to the Miura folding structure; The control system is used to control the driving component to drive the Miura folding structure to move to expand or fold; The energy conversion unit includes a frame, a lens, a photovoltaic cell, an antenna substrate and an antenna radiation unit. The lens and the photovoltaic cell are both installed on the frame, the lens and the photovoltaic cell are arranged opposite to each other, the antenna substrate is connected to the frame, and the antenna radiation unit is installed on the antenna substrate and electrically connected to the photovoltaic cell.

2. The foldable array structure of the space solar power station according to claim 1, characterized in that: Two adjacent energy conversion units distributed along the first direction are connected via a door hinge; Two adjacent energy conversion units distributed along the second direction are connected via a spring hinge; The first direction and the second direction are perpendicular to each other.

3. The foldable array structure of the space solar power station according to claim 2, characterized in that: Along the first direction, a plurality of the spring hinges are provided, and the lengths of the plurality of the spring hinges gradually decrease.

4. The foldable array structure of a space solar power station according to claim 1, characterized in that: The energy conversion unit further includes at least two driving mechanisms, one end of the driving mechanism is connected to the frame, and the other end is connected to the antenna substrate, the antenna substrate and the frame are connected through the driving mechanism, and at least two driving mechanisms are sequentially arranged along the length direction of the antenna substrate; The driving mechanism is used to drive the antenna substrate and the frame to move relatively closer or farther away from each other, so as to adjust the tilt angle of the lens and / or adjust the tilt angle of the antenna radiation unit.

5. The foldable array structure of the space solar power station according to claim 4, characterized in that: The driving mechanism comprises an upper plate, a lower plate and six linear actuators, one end of the linear actuator is connected to the upper plate, and the other end is connected to the lower plate, and the six linear actuators are arranged in sequence along the circumference of the upper plate; The upper plate is an integral structure with the frame or is fixedly connected to the frame, and the lower plate is an integral structure with the antenna substrate or is fixedly connected to the antenna substrate.

6. The foldable array structure of the space solar power station according to claim 4, characterized in that: The energy conversion unit also includes at least two heat sinks, which are fixedly connected to the driving mechanism. The at least two heat sinks are arranged in sequence along a direction perpendicular to the upper surface of the antenna substrate, and a heat dissipation gap exists between two adjacent heat sinks.

7. The foldable array structure of a space solar power station according to claim 1 or 6, characterized in that: The frame includes a carrying plate and a bracket, the photovoltaic cell is mounted on the carrying plate, the bracket is connected to the carrying plate, the lens is mounted on the bracket, a plurality of photovoltaic cells are provided, a plurality of lenses are provided, and one lens corresponds to one photovoltaic cell, and the height of the bracket is equal to the focal length of the lens; The side of the lens close to the photovoltaic cell includes a curved portion and a sawtooth portion, the curved portion is arranged at the axis of the lens, and the sawtooth portion includes a plurality of teeth extending along the radial direction of the lens; The supporting plate is a honeycomb aluminum plate, and at least two heat dissipation pipelines are embedded in the supporting plate.

8. The foldable array structure of a space solar power station according to claim 4, characterized in that: It also includes a first detection device disposed on the frame, the first detection device is connected to the control system, the first detection device is used to detect the incident angle of sunlight, and the control system is used to control the driving mechanism to drive the frame to move and tilt according to the detection result of the first detection device, so as to adjust the tilt angle of the lens; And / or, the foldable array structure also includes a second detection device arranged on the antenna substrate, the second detection device is connected to the control system, the second detection device is used to detect the propagation direction of the electromagnetic wave, and the control system is used to control the driving mechanism to drive the antenna substrate to move and tilt according to the detection result of the second detection device, so as to adjust the inclination angle of the antenna substrate.

9. The foldable array structure of a space solar power station according to claim 1, characterized in that: A feeder is also provided on the antenna substrate, one end of the feeder is electrically connected to the photovoltaic cell, and the other end is connected to the antenna radiation unit; The antenna substrate is also provided with a plurality of through holes, which are arranged in sequence along the length direction of the feed line, and the plurality of through holes form a ring structure surrounding the feed line.

10. A space solar power station, characterized in that: The invention comprises at least two foldable array structures of a space solar power station according to any one of claims 1 to 9, wherein at least two of the foldable array structures are distributed in a matrix.

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