CN118431321B - Solar cell protection device and solar cell system - Google Patents
Solar cell protection device and solar cell system Download PDFInfo
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- CN118431321B CN118431321B CN202410521893.8A CN202410521893A CN118431321B CN 118431321 B CN118431321 B CN 118431321B CN 202410521893 A CN202410521893 A CN 202410521893A CN 118431321 B CN118431321 B CN 118431321B
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- 238000005452 bending Methods 0.000 claims abstract description 66
- 230000001681 protective effect Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 10
- 229920000642 polymer Polymers 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 17
- 239000002245 particle Substances 0.000 abstract description 14
- 230000002035 prolonged effect Effects 0.000 abstract description 8
- 230000002829 reductive effect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 210000004027 cell Anatomy 0.000 description 118
- 239000010410 layer Substances 0.000 description 24
- 239000011521 glass Substances 0.000 description 19
- 230000002633 protecting effect Effects 0.000 description 11
- 238000005299 abrasion Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 210000002381 plasma Anatomy 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/40—Optical elements or arrangements
- H10F77/42—Optical elements or arrangements directly associated or integrated with photovoltaic cells, e.g. light-reflecting means or light-concentrating means
- H10F77/488—Reflecting light-concentrating means, e.g. parabolic mirrors or concentrators using total internal reflection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/552—Protection against radiation, e.g. light or electromagnetic waves
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- Engineering & Computer Science (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The application provides a solar cell protection device and a solar cell system. The solar cell protection device comprises a protection member, having opposed first and second faces; wherein, the light rays emitted to the first surface at least partially penetrate through the protective piece and are incident to the solar cell; the protection piece comprises at least one bending part, a reflecting layer is arranged on the second surface of the at least one bending part, and light rays emitted to the second surface of the at least one bending part are at least partially incident to the solar cell after being reflected by the reflecting layer. According to the solar cell protection device, on one hand, damage of charged particles in a space to the solar cell can be reduced through the protection piece, the service life of the solar cell is prolonged, and on the other hand, the solar cell can also exert a photoelectric conversion effect when sunlight irradiates from the back side, so that the utilization rate of the solar cell to the sunlight is improved, and the electric energy supply of an aerospace device is ensured.
Description
Technical Field
The invention relates to the technical field of aerospace, in particular to a solar cell protection device and a solar cell system.
Background
The solar battery is core equipment of a spacecraft power supply subsystem, strong and stable solar energy in space is collected by a solar battery array carried by the spacecraft, and is converted into electric energy through a photovoltaic effect, so that necessary power support is provided for an electric propulsion system, a communication and navigation system, a life support system and the like of the spacecraft, and meanwhile, an energy storage battery pack can be charged, so that sufficient electric energy supply of the spacecraft in the ground shadow period is ensured.
However, the solar cell is one-sided, and can convert light energy into electric energy when sunlight is irradiated from the front side of the solar cell, but cannot exert an energy conversion effect when sunlight is irradiated from the back side.
Disclosure of Invention
Based on this, the present invention aims to provide an improved solar cell protection device and solar cell system to solve at least one of the above problems.
In a first aspect, the present application provides a solar cell protection device comprising:
A guard having opposed first and second faces;
wherein,
Light directed to the first face is at least partially transmitted through the shield and incident to the solar cell;
the protection piece comprises at least one bending part, a reflecting layer is arranged on the second surface of at least one bending part, and light rays emitted to the second surface of at least one bending part are at least partially incident to the solar cell after being reflected by the reflecting layer.
According to the solar cell protection device, on one hand, the damage of charged particles in a space to a solar cell can be reduced to a certain extent through shielding of the protection piece, and the service life of the solar cell is prolonged; on the other hand, at least part of the light rays can penetrate through the protective piece and enter the solar cell when the sunlight irradiates to the first surface of the protective piece, so that photoelectric conversion is realized, at least part of the light rays can be reflected by the reflecting layer to enter the solar cell when the sunlight irradiates to the second surface provided with the reflecting layer, and photoelectric conversion is also realized, so that the solar cell can play a role when the sunlight irradiates from the back side, the utilization rate of the solar cell to the sunlight is improved, and the electric energy supply of the aerospace device is ensured.
In one embodiment, the guard includes an undeployed state and a deployed state, at least one of the folds having a fold angle in the undeployed state that is less than its fold angle in the deployed state.
In one embodiment, the guard further comprises: and the elastic driving assembly is coupled with the protective piece and is configured to be opened under a preset condition to drive at least one bending part in the protective piece to act so as to increase the bending angle of the at least one bending part.
In one embodiment, the elastic drive assembly includes: an airbag, in contact with at least one of the bending portions, configured to expand under the predetermined condition to increase a bending angle of the at least one bending portion.
In one embodiment, the protection device further comprises a transparent support, wherein the transparent support is movably connected with the protection piece and surrounds the protection piece to form a containing space for containing the solar cell; the air bag comprises an L-shaped air bag, one side of the L-shaped air bag is in contact with the transparent support, and the other side of the L-shaped air bag is in contact with at least one bending part.
In one embodiment, the protection device further comprises a first adjusting mechanism, wherein the first adjusting mechanism is arranged on the transparent support and connected with the protection piece and is configured to adjust the opening angle of the L-shaped air bag by moving the protection piece.
In one embodiment, the guard comprises at least two articulated half mirrors, wherein at least one half mirror is arranged at an angle to the half mirror adjacent thereto to form the fold.
In a second aspect, the present application provides a solar cell protection device comprising: at least two movably connected one-way perspective glasses; wherein at least one half mirror is arranged at an angle with the adjacent half mirror; and the included angle between the one-way perspective glass and the adjacent one-way perspective glass is configured to enable the light rays which are emitted to the reflecting surface of at least one of the two one-way perspective glasses to be at least partially incident to the solar cell after being reflected.
According to the solar cell protection device, on one hand, the damage of charged particles in a space to a solar cell can be reduced to a certain extent through shielding of the half mirror, and the service life of the solar cell is prolonged; on the other hand, at least part of the light rays can penetrate through the protective piece and are incident to the solar cell when the sunlight irradiates the non-reflecting surface of the half mirror, so that photoelectric conversion is realized, and at least part of the light rays are reflected and are incident to the solar cell when the sunlight irradiates the reflecting surface of the half mirror, and the photoelectric conversion is also realized, so that the solar cell can play a role when the sunlight irradiates from the back side, the utilization rate of the solar cell to the sunlight is improved, and the electric energy supply of an aerospace device is ensured.
In a third aspect, the present application provides a solar cell system comprising: a solar cell; and a solar cell protection device according to any of the preceding embodiments provided on at least one side of the solar cell.
According to the solar cell system, no matter whether sunlight is incident from the front side or the back side, the solar cell can be irradiated by the solar cell protection device, so that photoelectric conversion is realized, the utilization rate of sunlight is improved, and the electric energy supply of an aerospace device is ensured; meanwhile, the solar cell protection device arranged on one side of the solar cell can reduce the damage of charged particles in the space to the solar cell to a certain extent, so that the service life of the solar cell is prolonged.
In one embodiment, the method further comprises: a flexible transparent polymer shielding material arranged between the solar cell protection device and the solar cell and covering the front surface of the solar cell; and/or a second adjusting mechanism provided to the solar cell protection device and connected to the solar cell, the second adjusting mechanism being configured to adjust a distance between a back surface of the solar cell and the solar cell protection device by raising or lowering the solar cell.
Drawings
In order to more clearly illustrate the embodiments of the present description or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present description, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic view of a shielding device according to an embodiment of the present application in an undeployed state of the shielding device;
FIG. 2 is a schematic view of a light path of a protecting device according to an embodiment of the present application when the protecting device is irradiated by sunlight in an undeployed state;
FIG. 3 is a schematic view of a protecting device according to an embodiment of the present application in a protecting device unfolded state;
FIG. 4 is a schematic view of an optical path of a shielding device according to an embodiment of the present application when irradiated by sunlight in a state where a shielding member is unfolded;
FIG. 5 is a schematic view of another optical path of the shielding device according to an embodiment of the present application when irradiated by sunlight in the unfolded state of the shielding member;
Fig. 6 is a schematic structural diagram of a solar cell system according to an embodiment of the application.
Description of element numbers:
100. The solar cell protection device comprises a solar cell protection device body 110, a protection piece 110A, a bending part 110B, a bending part 111, a first surface 112, a second surface 120, an elastic driving assembly 130, a transparent support 140, a containing space 150, a first adjusting mechanism 151, a motor 152, a rope structure 160 and a hinge;
200. 300 parts of solar battery, 400 parts of flexible transparent polymer shielding material and 400 parts of second adjusting mechanism; 1000. a solar cell system.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
The embodiment of the application provides a solar cell protection device which can be installed on an aerospace device, and by arranging a protection piece with one surface having stronger reflection characteristic and the opposite surface having normal transmission characteristic, at least part of light can penetrate through the protection piece and enter a solar cell when sunlight irradiates to one surface of the protection piece, so that photoelectric conversion is realized, and at least part of light can be reflected by a reflection layer to enter the solar cell when the sunlight irradiates to one surface having stronger reflection characteristic, so that photoelectric conversion is also realized, thereby improving the utilization rate of the sunlight and ensuring the electric energy supply of the aerospace device; meanwhile, the protection piece can reduce damage of charged particles in a space to the solar cell to a certain extent, so that the service life of the solar cell is prolonged.
As shown in fig. 1 to 5, an embodiment of the present application provides a solar cell protection device 100, including: a guard 110 having opposed first and second faces 111, 112; wherein, the light emitted to the first surface 111 is at least partially transmitted through the protective member 110 and is incident to the solar cell; the protection piece 110 comprises at least one bending part, the second surface of the at least one bending part is provided with a reflecting layer, and light rays emitted to the second surface of the at least one bending part are at least partially incident to the solar cell after being reflected by the reflecting layer.
Illustratively, as shown in fig. 3, the shield 110 has a first face 111 facing the front side of the solar cell 200 and a second face 112 facing the back side of the solar cell 200; the protector 110 includes two bending portions, namely, a bending portion 110A and a bending portion 110B, wherein the second surface 112 of the bending portion 110A may be provided with a reflective layer, the second surface 112 of the bending portion 110B may be provided with a reflective layer, and both the second surfaces 112 of the bending portion 110A and the bending portion 110B may be provided with a reflective layer.
The present application will be described by taking the example in which the reflective layer is provided on the second surfaces of the two bending portions. First, as shown in fig. 4, when sunlight is incident from the front side of the solar cell 200, at least part of the light emitted to the first surface 111 can pass through the protection member 110 and be incident to the solar cell 200, so as to realize photoelectric conversion; next, as shown in fig. 5, when sunlight is incident from the back side of the solar cell 200, the light rays emitted to the second surfaces 112 of the two bending portions can be reflected by the reflective layer on the second surface 112 of each bending portion, so that at least a portion of the light rays reflected by each bending portion are incident to the solar cell 200, thereby realizing photoelectric conversion; finally, it should be noted that the protection piece may be provided with only one bending portion or more bending portions, and in particular may be provided according to the actual irradiation condition of the sunlight when the aerospace device runs on the track, so as to achieve a higher sunlight utilization rate, which is not limited in the application.
The reflective layer may reflect half of the light, and the other half of the light may pass through the reflective layer, i.e., the reflective layer is a transflective film layer; or the reflective layer may reflect a substantial portion of the light and a small portion of the light may pass through the reflective layer.
Illustratively, the protective member 110 may be made of glass as a main material, so as to effectively shield low-energy particles in the space, and also prevent the plasma from directly contacting the solar cell 200, thereby inhibiting the accumulation of space charges on the surface thereof.
In some embodiments of the present application, as shown in fig. 1 and 3, the guard 110 includes an undeployed state and a deployed state, the at least one bend having a bend angle in the undeployed state that is less than the bend angle in the deployed state. Illustratively, the bending portion may be formed of one horizontal straight edge and one or more folded edges, may be formed of a plurality of folded edges, and may be formed of one or more curved edges, each having a bending angle for reflecting bending properties thereof. Taking the bending portion 110A shown in fig. 1 and 3 as an example, the bending portion 110A is formed by a horizontal straight edge and a folded edge, and an included angle between the horizontal straight edge and the folded edge is a bending angle α in an undeployed state and a bending angle β in a deployed state, it can be seen that the bending angle β is greater than the bending angle α, and it is further known that the greater the bending angle, the higher the deployment degree of the shielding member 110, and the more light is reflected. Illustratively, the bend angle of the bend is greater than 0 ° and less than 90 °. Alternatively, when the bending portion has a plurality of folds (or one or more curved edges), the bending angle thereof may be determined by an included angle between a first edge (or a start tangent line of the bending portion) and a last edge (or an end tangent line of the bending portion). By the arrangement, on one hand, the protection piece 110 is in a contracted state when not in use, so that the lateral occupied space is smaller, and the protection device 100 is convenient to store, transport and carry; on the other hand, when the protection member 110 is used, the bent portions 110A and 110B on both sides are sufficiently spread, so that light incident from the back side of the solar cell 200 is at least partially reflected to be incident on the solar cell 200, thereby realizing photoelectric conversion and ensuring the utilization efficiency of sunlight.
Alternatively, as shown in fig. 2, before the shielding member 110 is not unfolded, the shielding member 110 may also allow the light incident from the front side of the solar cell 200 to enter the solar cell 200 through the shielding member 110, so as to implement photoelectric conversion. In this way, the aerospace device can be ensured to realize the utilization of sunlight in the whole process, and meanwhile, the damage of charged particles in space to the solar cell 200 can be reduced.
In some embodiments of the present application, with continued reference to fig. 3, the guard 100 further comprises: an elastic drive assembly 120, coupled to the guard 110, is configured to open under predetermined conditions to drive at least one bend in the guard 110 to increase the bend angle of the at least one bend. For example, the predetermined condition may be that the aerospace device is traveling to a predetermined orbit, i.e., the elastic drive assembly 120 may be controlled to be turned on by a controller on the aerospace device when the aerospace device is detected to be traveling to the predetermined orbit. For example, after the elastic driving assembly 120 is opened, a certain component of the bending portion may be driven to perform at least one of translation, rotation and overturning, so as to increase the bending angle of the bending portion, that is, switch the shielding member 110 from the undeployed state to the deployed state.
Optionally, with continued reference to fig. 3, the elastic drive assembly 120 may include: an airbag, in contact with the at least one bending portion, is configured to expand under predetermined conditions to increase a bending angle of the at least one bending portion. Because the air bag has elasticity, the abrasion among the elements can be reduced, the service life of the protecting device 100 is prolonged, the air bag has a simple structure, light weight and small occupied space, the weight and the volume of the protecting device 100 can not be increased, and the preparing and the application of the protecting device 100 are convenient. Alternatively, a certain amount of gas may be present inside the balloon, and the balloon will not expand when the air pressure is affected inside the aerospace device, but when the aerospace device reaches a predetermined orbit, the external air pressure will be small, and the air pressure inside the balloon will be greater than the external air pressure so as to expand to deploy the guard 110.
Alternatively, the elastic driving assembly 120 may include: a spring in contact with the at least one bending portion and configured to stretch or rebound under a predetermined condition to increase a bending angle of the at least one bending portion. The spring has elasticity, so that abrasion among elements can be reduced, the service life of the protection device 100 is prolonged, the spring is simple in structure, light in weight and small in occupied space, the weight and the volume of the protection device 100 cannot be increased, and the preparation and the application of the protection device 100 are facilitated.
Optionally, with continued reference to fig. 3, the protection device 100 further includes a transparent support 130, where the transparent support 130 is movably connected to the protection element 110 and encloses with the protection element 110 to form a accommodating space 140 for accommodating the solar cell 200; the airbag includes an L-shaped airbag, one side of which is in contact with the transparent support 130 and the other side of which is in contact with at least one bent portion. Wherein the transparent support 130 is beneficial to reducing shielding and increasing light transmission area. By the cooperation of the protection piece 110 and the transparent support 130, the solar cell 200 can be omnidirectionally protected in the circumferential direction of the solar cell 200, so that the damage of charged particles in the space to the solar cell 200 is further reduced; on the other hand, by arranging the L-shaped air bag, and making one side of the L-shaped air bag contact with the transparent support 130 and one side contact with at least one bending portion, the structure of the elastic driving assembly 120 is simplified, and the unfolding degree of the protecting piece 110 is conveniently controlled, so that the reflecting angle of the bending portion is controlled, and the protecting piece 110 is prevented from being unfolded too much to reduce the light incident to the solar cell through reflection of the reflecting layer. Alternatively, the transparent support 130 may be formed by a plate connection, a non-plate connection, or a plate and non-plate connection together.
Alternatively, the guard 100 may include a support formed of a non-transparent material. For example, the support formed by the non-transparent material may have a hollowed-out portion through which light passes, and the support may be formed by connecting strip materials, for example, may be a grid-shaped support. In other embodiments, the non-transparent support may be formed by connecting a strip material and a plate material together, so long as a hollow part is ensured.
Alternatively, the air bag may comprise a triangular air bag or a rectangular air bag, so long as two sides are respectively contacted with the transparent support 130 and at least one bending part and can expand to increase the included angle between the two sides, and the specific type can be selected according to practical situations, which is not limited by the present application.
Optionally, with continued reference to fig. 3, the protection device 100 further includes a first adjustment mechanism 150, where the first adjustment mechanism 150 is disposed on the transparent support 130 and connected to the protection member 110, and is configured to adjust the opening angle of the L-shaped air bag by moving the protection member 110. By controlling the opening angle of the L-shaped air cell, it is advantageous to make as much light incident from the back side of the solar cell 200 as possible be reflected by the reflection layer to be incident to the solar cell 200 for photoelectric conversion. Alternatively, the first adjustment mechanism 150 may move the guard 110 by pulling in or out, or may move the guard 110 by rotating the guard 110 relative to the transparent support 130. Alternatively, referring to fig. 3, the first adjusting mechanism 150 may include a motor 152 and a rope structure 151 connected to a driving end of the motor 152, one end of the rope structure 151 is connected to the driving end of the motor 152, and the other end is connected to the shielding member 110, and alternatively, the rope structure 151 may include a winch and a rope wound around the winch, so that the shielding member 110 is pulled in or out by retracting the rope through the motor 152, and thus the opening angle of the L-shaped airbag is controlled. Optionally, the first adjusting mechanism may further include a motor and a gear structure connected with the motor, where the gear structure is connected with the protecting element 110, so that the protecting element 110 is driven to move by the gear driven by the motor to rotate.
In some embodiments of the present application, the guard 110 includes at least two articulated half mirrors, wherein at least one half mirror is angled to its adjacent half mirror to form a fold. The unidirectional perspective glass is special glass with extremely high reflection on visible light, and is synthesized by a magnetron sputtering coating process, and a very thin film layer is coated on the surface layer of the glass, so that most of light can be reflected by the unidirectional perspective glass, and a small part of light can be transmitted through the unidirectional perspective glass. In this embodiment, the half mirror includes a glass and a reflective layer disposed on one side surface thereof, the reflective layer being oriented toward the solar cell 200, so that when sunlight is incident on the reflective layer, most of the sunlight can be reflected and at least part of the reflected light can be incident on the solar cell 200, and a small part of the sunlight can be transmitted.
Optionally, any two adjacent one-way perspective glasses are movably connected; optionally, the unidirectional perspective glass is movably connected with the transparent bracket; alternatively, as shown in fig. 1 and 3, the movable connection may be a hinge 160, a pivot connection, or a universal connection, which is not limited in this aspect of the application.
The embodiment of the application also provides a solar cell protection device, which comprises: at least two movably connected one-way perspective glasses; wherein at least one half mirror is arranged at an angle with the adjacent half mirror; and the included angle between the one-way perspective glass and the adjacent one-way perspective glass is configured to enable the light rays which are emitted to the reflecting surface of the one-way perspective glass in the two one-way perspective glasses to be at least partially incident to the solar cell after being reflected.
According to the solar cell protection device, on one hand, the damage of charged particles in a space to a solar cell can be reduced to a certain extent through shielding of the half mirror, and the service life of the solar cell is prolonged; on the other hand, at least part of the light rays can penetrate through the protective piece and are incident to the solar cell when the sunlight irradiates the non-reflecting surface of the half mirror, so that photoelectric conversion is realized, and at least part of the light rays are reflected and are incident to the solar cell when the sunlight irradiates the reflecting surface of the half mirror, and the photoelectric conversion is also realized, so that the solar cell can play a role when the sunlight irradiates from the back side, the utilization rate of the solar cell to the sunlight is improved, and the electric energy supply of an aerospace device is ensured.
The embodiment of the present application further provides a solar cell system, as shown in fig. 6, the solar cell system 1000 includes: a solar cell 200; and a solar cell protection device 100 as described in any of the previous embodiments disposed on at least one side of the solar cell.
In the solar cell system 1000, no matter whether the sunlight is incident from the front side or the back side, the solar cell protection device 100 can enable the sunlight to irradiate the solar cell to realize photoelectric conversion, so that the utilization rate of the sunlight is improved, and the electric energy supply of the aerospace device is ensured; meanwhile, the solar cell protection device 100 disposed at one side of the solar cell 200 may reduce damage of charged particles in a space to the solar cell 200 to some extent, thereby extending the lifetime of the solar cell 200.
In some embodiments of the present application, the solar cell system 1000 further includes a flexible transparent polymer shielding material 300 disposed between the solar cell protection device 100 and the solar cell 200, covering the front surface of the solar cell 200. The glass cover plate can prevent part of low-energy particles from entering the solar cell, but cannot shield high-energy (energy level is MeV) particles with extremely strong penetrating power. Optionally, the surface of the flexible transparent polymer shielding material 300 is provided with a conductive grid prepared from nano silver paste, which can effectively shield high-energy particles and low-energy particles in the universe and can prevent plasmas from directly contacting the solar cell 200. The electromagnetic shielding window using the flexible transparent polymer shielding material 300 has extremely small weight, and saves a small load for the aerospace device.
In some embodiments of the present application, with continued reference to fig. 6, the solar cell system 1000 further includes a second adjustment mechanism 400 disposed on the solar cell protection device 100 and coupled to the solar cell 200, the second adjustment mechanism 400 being configured to adjust the distance between the back side of the solar cell 200 and the solar cell protection device 100 by raising or lowering the solar cell 200. Alternatively, the second adjustment mechanism 400 may be a hydraulic lever by which the solar cell 200 is raised or lowered to adjust the distance between the rear surface of the solar cell panel 200 and the solar cell protection device 100. With the above arrangement, the efficiency of the solar cell 200 to receive the reflected light of the shielding member 110 can be effectively adjusted.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. A solar cell protection device, the solar cell protection device being mounted to an aerospace device, comprising:
The protective piece is provided with a first surface and a second surface which are opposite, the protective piece comprises at least one bending part, and the second surface of at least one bending part is provided with a reflecting layer; the protection piece comprises an undeployed state and a deployed state, and the bending angle of at least one bending part in the undeployed state is smaller than that in the deployed state; and
An elastic driving assembly coupled with the protective pieces and configured to be opened when the aerospace device runs to a preset track so as to drive at least one bending part in the protective pieces to act to increase the bending angle of the at least one bending part, so that the protective pieces are switched from the undeployed state to the deployed state;
wherein,
When the aerospace device runs on the track, light rays which are directed to the first face at least partially penetrate through the protective piece and are incident to the surface of the solar cell, and light rays which are directed to the second face of the at least one bending part are reflected by the reflecting layer and then at least partially incident to the same surface of the solar cell.
2. The solar cell protection device of claim 1, wherein the elastic drive assembly comprises:
an airbag in contact with at least one of the folds and configured to expand to increase a fold angle of the at least one fold when the aerospace device is traveling to a predetermined orbit.
3. The solar cell protection device of claim 2, wherein,
The protective device further comprises a transparent support, wherein the transparent support is movably connected with the protective piece and surrounds the protective piece to form a containing space for containing the solar cell;
the air bag comprises an L-shaped air bag, one side of the L-shaped air bag is in contact with the transparent support, and the other side of the L-shaped air bag is in contact with at least one bending part.
4. The solar cell protection device of claim 3, further comprising a first adjustment mechanism disposed on the transparent support and coupled to the shield and configured to adjust the opening angle of the L-shaped airbag by moving the shield.
5. The solar cell protection device of any one of claims 1-4, wherein the protection piece comprises at least two articulated half mirrors, wherein at least one half mirror is disposed at an angle to the half mirror adjacent thereto to form the fold.
6. A solar cell protection device, the solar cell protection device being mounted to an aerospace device having an undeployed state and a deployed state, comprising:
at least two connected one-way half mirrors, wherein the angle formed by at least one-way half mirror and the adjacent one-way half mirror in the undeployed state is smaller than the angle formed by at least one-way half mirror and the adjacent one-way half mirror in the deployed state; and
An elastic driving assembly coupled with at least one half mirror and configured to be opened to drive the at least one half mirror to rotate relative to an adjacent half mirror to increase an included angle therebetween when the aerospace device is operated to a predetermined orbit, so that the protective device is switched from the undeployed state to the deployed state;
And
When the aerospace device runs on the track, light rays which are directed to the non-reflecting surface of at least one half mirror of the at least two half mirrors at least partially penetrate and are incident to the surface of the solar cell, and light rays which are directed to the reflecting surface of at least one half mirror of the at least two half mirrors are reflected and at least partially incident to the same surface of the solar cell.
7. The solar cell protection device of claim 6, wherein the elastic drive assembly comprises:
an air bag in contact with at least one of the half mirrors and configured to expand to drive the at least one half mirror to rotate relative to an adjacent half mirror to increase an included angle therebetween when the aerospace device is traveling to a predetermined orbit.
8. A solar cell system, comprising:
A solar cell; and
The solar cell protection device according to any one of claims 1 to 7 provided on at least one side of the solar cell.
9. The solar cell system according to claim 8, further comprising:
a flexible transparent polymer shielding material arranged between the solar cell protection device and the solar cell and covering the front surface of the solar cell;
And/or the number of the groups of groups,
And the second adjusting mechanism is arranged on the solar cell protection device and connected with the solar cell, and is configured to adjust the distance between the back surface of the solar cell and the solar cell protection device by lifting or lowering the solar cell.
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| CN213125970U (en) * | 2020-09-07 | 2021-05-04 | 南通强生光电科技有限公司 | Solar power generation device |
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| JP2005353656A (en) * | 2004-06-08 | 2005-12-22 | Tokai Rubber Ind Ltd | Transparent electromagnetic wave shield film and its manufacturing method, and front filter for plasma display panel using the same and plasma display |
| US8143607B2 (en) * | 2008-07-15 | 2012-03-27 | Horia Mihail Teodorescu | Reconfigurable radiation shield |
| US20190312544A1 (en) * | 2016-06-02 | 2019-10-10 | Bolymedia Holdings Co. Ltd | Sun tracking solar system |
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|---|---|---|---|---|
| CN104300893A (en) * | 2014-08-18 | 2015-01-21 | 杭州慈源科技有限公司 | Double-sided power generation solar battery assembly with polygonal structure |
| CN110634982A (en) * | 2019-09-10 | 2019-12-31 | 常州大学 | A kind of reflective one-way transmission film layer, photovoltaic module and preparation method thereof |
| CN213048301U (en) * | 2020-07-03 | 2021-04-27 | 武汉市第一医院 | Bending adjustable stomach catheter |
| CN213125970U (en) * | 2020-09-07 | 2021-05-04 | 南通强生光电科技有限公司 | Solar power generation device |
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