CN218958877U - Light guide structure and concentrating photovoltaic device - Google Patents
Light guide structure and concentrating photovoltaic device Download PDFInfo
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- CN218958877U CN218958877U CN202222945815.XU CN202222945815U CN218958877U CN 218958877 U CN218958877 U CN 218958877U CN 202222945815 U CN202222945815 U CN 202222945815U CN 218958877 U CN218958877 U CN 218958877U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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Abstract
The utility model relates to a light guide structure and a concentrating photovoltaic device, wherein the light guide structure comprises: the base is provided with a limiting block, and the limiting block is connected to one side of the base; the fixing device comprises a base, a limiting block and a fixing groove, wherein a fixing groove for accommodating the secondary optical prism is formed in one end face of the base, the limiting block is connected to a notch of the fixing groove, and one side wall of the limiting block and the inner side wall of the fixing groove are abutted to the outer side wall of the secondary optical prism so that the secondary optical prism is fixed. The light guide structure of the technical scheme is connected to the notch of the fixed groove through the limiting block, and the limiting block can prevent the secondary optical prism from being separated from the fixed groove of the base; and the side wall of the limiting block and the inner side wall of the fixing groove are abutted against the outer side wall of the secondary optical prism, so that the secondary optical prism is fixed, the stability of the secondary optical prism is improved, and the secondary optical prism is prevented from deviating in the fixing groove.
Description
Technical Field
The utility model relates to the technical field of photovoltaic power generation, in particular to a light guide structure and a concentrating photovoltaic device.
Background
The concentrating photovoltaic is different from the traditional crystalline silicon photovoltaic in that the concentrating photovoltaic is required to generate energy by optical focusing through a Fresnel lens on the photovoltaic cell, and then the photovoltaic effect is achieved to generate electric energy through high conversion rate of a three-junction III-V gallium arsenide cell.
Chinese patent CN201610721230.6 discloses an array concentrating photovoltaic power generation device comprising a housing for assembling a plurality of concentrating module mechanisms and a bracket; the concentrating module mechanism comprises a concentrating photovoltaic module for converting solar energy into electric energy; the lower end of the concentrating photovoltaic module is provided with a concentrating photovoltaic module support member, the whole concentrating photovoltaic module support member is sleeved on the Y rotating shaft, a hinge pin is arranged at the sleeved position, two sides of the lower end of the concentrating photovoltaic module support member are also provided with a hinge pin, the hinge pin is provided with a connecting rod, a cylindrical rack which can slide on the Y rotating shaft is arranged at a certain position away from the installation position of the concentrating photovoltaic module support member, the end face of the cylindrical rack, which is close to one end of the concentrating photovoltaic module support member, extends downwards, and two ends of the extending part are also provided with hinge pins; the concentrating photovoltaic module comprises a battery chip, and a prism for concentrating light to the battery chip is arranged above the battery chip; and a Fresnel lens used for condensing light rays to the prism is arranged above the prism.
The fresnel lens of the concentrating photovoltaic power generation device is adhered to the top ends of the connecting pieces at the upper and lower parts of the module through optical cement, so that the battery piece packaging is easily damaged during processing or transportation, bubbles are generated at the adhering connection position or tearing is formed, and then the stability of the secondary optical prism is affected.
In addition, chinese patent CN202010366723.9 discloses a solar concentrating photovoltaic power generation and heat energy comprehensive utilization system, which sequentially comprises a secondary concentrator, a concentrating photovoltaic cell, a concentrating photovoltaic power output module, a flat heat pipe heat transfer module, a thermoelectric power generation module and a microchannel heat dissipation module from top to bottom. And a circuit layer is directly paved on the upper surface of the evaporation end to place a concentrating photovoltaic chip, the condensation end of the flat heat pipe is directly attached to the upper metal layer of the thermoelectric power generation module, and the upper cover plate of the microchannel radiator is directly attached to the lower metal layer of the thermoelectric power generation module.
In the same way, in the concentrating photovoltaic power generation system related to the patent, a layer of high-transparency heat-conducting glue is coated on the upper surface of the concentrating photovoltaic cell, and then the secondary concentrator is stuck on the upper surface. The above patent also has a problem that the secondary optical prism is unstable.
In summary, in order to avoid the optical axis of the secondary optical prism from being shifted and damaging other components in the photovoltaic device, the secondary optical prism is generally adhered to the surface of the battery by glue in industry. When the method is used for processing or transporting, the battery piece packaging is easy to damage, so that bubbles are generated or tearing is formed on the adhesive layer, the secondary optical prism is offset, the secondary optical prism becomes unstable, and the light condensing effect of the secondary optical prism cannot be guaranteed.
Disclosure of Invention
The utility model provides a light guide structure, and aims to solve the technical problems that the existing secondary optical prism is poor in bonding stability, and the secondary optical prism is easy to deviate so as to influence the light condensing effect.
The second object of the present utility model is to provide a concentrating photovoltaic device.
In order to achieve the above object, the present utility model provides a light guiding structure, comprising:
a base, a base seat and a base seat,
the limiting block is connected to one side of the base; wherein, the liquid crystal display device comprises a liquid crystal display device,
a fixing groove for accommodating the secondary optical prism is formed in one end face of the base, the limiting block is connected to the notch of the fixing groove, and one side wall of the limiting block and the inner side wall of the fixing groove are abutted to the outer side wall of the secondary optical prism so that the secondary optical prism is fixed.
As a further improvement of the utility model: the cross-sectional area of the notch of the fixed groove gradually decreases towards the other end face of the base; or alternatively, the process may be performed,
the fixing groove is of a cone structure.
As a further improvement of the utility model: the limiting block is provided with a light-transmitting groove.
As a further improvement of the utility model: the limiting block is provided with a first blocking part positioned at the edge of the light-transmitting groove, and the first blocking part is used for being abutted against the secondary optical prism in the fixed groove.
As a further improvement of the utility model: the area of the first blocking part is less than or equal to 1% of the area of the light-transmitting groove.
As a further improvement of the utility model: the limiting block is detachably connected with the base.
As a further improvement of the utility model: the base is provided with a sliding groove, the limiting block is provided with a connecting part matched with the sliding groove, and the connecting part is clamped in the sliding groove, so that the limiting block can be arranged in a sliding manner relative to the base.
As a further improvement of the utility model: the chute comprises a first notch and a second notch, the first notch and the second notch are respectively arranged at two opposite end surfaces of the base, and the first notch extends linearly towards the direction of the second notch.
As a further improvement of the utility model: the limiting block and the base are made of opaque materials.
As a further improvement of the utility model: the limiting block and the base are made of low-heat-conduction materials; or alternatively, the process may be performed,
the limiting block and the base are made of porcelain stone.
In order to achieve the second objective, the present utility model further provides a concentrating photovoltaic device, which includes the light guiding structure, and further includes a substrate, and the base is connected to the substrate.
As a further improvement of the utility model: the base is provided with a connecting hole, and the base is connected with the substrate through the connecting hole by bolts.
As a further improvement of the utility model: the base plate is provided with a battery, a side surface of the base, which is close to the battery, is provided with a radiation opening, and the notch of the fixing groove extends towards the direction of the radiation opening.
As a further improvement of the utility model: the fixing groove is internally provided with a second blocking part, and the second blocking part is used for abutting against the secondary optical prism so that the spacing distance between the end face of the secondary optical prism and the surface of the battery is not less than 1 mm.
As a further improvement of the utility model: the concentrating photovoltaic device further comprises a secondary optical prism, and the spacing distance between the end face of the secondary optical prism and the surface of the battery is less than or equal to 5% of the height of the secondary optical prism.
Compared with the prior art, the utility model has the following beneficial effects:
the light guide structure of the technical scheme is connected to the notch of the fixed groove through the limiting block, and the limiting block can prevent the secondary optical prism from being separated from the fixed groove of the base; and the side wall of the limiting block and the inner side wall of the fixing groove are abutted against the outer side wall of the secondary optical prism, so that the secondary optical prism is fixed, the stability of the secondary optical prism is improved, and the secondary optical prism is prevented from deviating in the fixing groove.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a light guiding structure of the present application;
FIG. 2 is an enlarged schematic view of FIG. 1 at B;
fig. 3 is a schematic structural diagram of an embodiment of a base and a substrate of the present application.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 1 | |
2 | |
| 3 | Secondary |
4 | |
| 5 | |
11 | Light-transmitting |
| 12 | First blocking |
13 | Connecting |
| 21 | |
22 | |
| 23 | Connecting |
24 | Electrode |
| 25 | Radiation opening |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present utility model, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
In order to avoid the optical axis of the secondary optical prism from being shifted and consequently damaging other components in the photovoltaic device, the secondary optical prism is generally adhered to the surface of the battery by glue in the industry. When the method is used for processing or transporting, the battery piece packaging is easy to damage, so that bubbles are generated or tearing is formed on the adhesive layer, the secondary optical prism is offset, the secondary optical prism becomes unstable, and the light condensing effect of the secondary optical prism cannot be guaranteed.
The utility model aims to provide a light guide structure, and aims to solve the technical problems that the existing secondary optical prism is poor in bonding stability, and the secondary optical prism is easy to deviate so as to influence the light condensing effect.
Referring to fig. 1-3, in an embodiment of a light guiding structure of the present application, the light guiding structure includes:
the base 2 is provided with a plurality of grooves,
the limiting block 1 is connected to one side of the base 2; wherein, the liquid crystal display device comprises a liquid crystal display device,
a fixing groove 21 for accommodating the secondary optical prism 3 is formed in one end surface of the base 2, the limiting block 1 is connected to a notch of the fixing groove 21, and a side wall of the limiting block 1 and an inner side wall of the fixing groove 21 abut against an outer side wall of the secondary optical prism 3, so that the secondary optical prism 3 is fixed.
Specifically, in the present embodiment, the secondary optical prism 3 has a three-dimensional structure, and the secondary optical prism 3 is enclosed in the fixing groove 21 of the base 2. The limiting block 1 is close to one side wall of the base 2 and is abutted against the top surface of the secondary optical prism 3, the inner side wall of the fixing groove 21 of the base 2 is abutted against the outer side wall below the top surface of the secondary optical prism 3, and the offset of the secondary optical prism 3 is limited in an abutting mode, so that the effect of fixing the secondary optical prism 3 is achieved.
The light guide structure of the technical scheme is connected to the notch of the fixed groove 21 through the limiting block 1, and the limiting block can prevent the secondary optical prism 3 from being separated from the fixed groove 21 of the base 2; and through the lateral wall of stopper 1 and the lateral wall butt secondary optical prism 3 of fixed slot 21 to make secondary optical prism 3 fixed, improve secondary optical prism 3's stability, thereby avoid secondary optical prism 3 skew in fixed slot 21.
Further, in a certain embodiment, the cross-sectional area of the notch of the fixing groove 21 gradually decreases toward the other end face of the base 2; or alternatively, the process may be performed,
the fixing groove 21 has a cone structure.
Specifically, in the present embodiment, the base 2 has a pyramid structure, and the notch of the fixing groove 21 is opened on the top surface of the base 2, and the cross-sectional area of the notch of the fixing groove 21 gradually decreases toward the bottom surface of the base 2. So arranged, the fixing groove 21 has a reverse taper structure, so that the light condensing direction of the secondary optical prism 3 can be adapted to direct and radiate light on the battery 4 at the bottom of the base 2. It can be understood that, since the fixing groove 21 has a cone structure, a plurality of inclined side walls of the fixing groove 21 are attached to the side walls of the secondary optical prism 3, and the slope of the side walls of the fixing groove 21 is the same as the slope of the corresponding side walls of the secondary optical prism 3, so that the secondary optical prism 3 can be further fixed, and the secondary optical prism 3 cannot rotate.
It should be noted that, in other embodiments, the fixing groove 21 may also be a cone structure in order to adapt to the external shape of the secondary optical prism 3, so the structure of the fixing groove 21 is not limited in this technical solution.
Further, in an embodiment, the limiting block 1 is provided with a light-transmitting groove 11.
Specifically, in this embodiment, the middle part of the limiting block 1 is provided with the light-transmitting grooves 11 penetrating through the two end surfaces, so that light can be irradiated to the secondary optical prism 3 through the limiting block 1, and the secondary optical prism 3 can realize light-gathering work.
Further, in one embodiment, the limiting block 1 is provided with a first blocking portion 12 located at an edge of the light-transmitting groove 11, and the first blocking portion 12 is used for abutting against the secondary optical prism 3 in the fixing groove 21.
Specifically, referring to fig. 2, in the present embodiment, in order to prevent the secondary optical prism 3 from separating from the fixing groove 21 of the base 2 and sliding out of the light-transmitting groove 11, the edge of the limiting block 1 is provided with a first blocking portion 12 with a folded angle structure, and the first blocking portion 12 abuts against the top surface of the secondary optical prism 3, so as to block the secondary optical prism 3 from sliding out.
Further, in an embodiment, the area of the first blocking portion 12 is less than or equal to 1% of the area of the light-transmitting groove 11.
Specifically, in the present embodiment, the first blocking portion 12 should not block the top surface of the secondary optical prism 3 over an excessively large area in order to better improve the illumination efficiency. Therefore, the area of the first blocking portion 12 is less than 1% of the area of the light-transmitting groove 11 in the present embodiment. In addition, in other embodiments, the area of the first blocking portion 12 may be equal to 1% of the area of the light-transmitting groove 11.
Further, in an embodiment, the limiting block 1 is detachably connected with the base 2.
Specifically, in the present embodiment, in order to facilitate the installation of the secondary optical prism 3 into the fixing groove 21, the stopper 1 of the present light guiding structure is detachably connected with the base 2.
Further, in an embodiment, the base 2 is provided with a chute 22, the stopper 1 is provided with a connection portion 13 matched with the chute 22, and the connection portion 13 is clamped in the chute 22, so that the stopper 1 is slidably disposed relative to the base 2.
Specifically, in the embodiment, since the connecting portion 13 of the limiting block 1 is clamped in the chute 22 of the base 2, the limiting block 1 is slidable relative to the base 2, so that the limiting block 1 and the base 2 can be detachably assembled, and the secondary optical prism 3 can be conveniently replaced.
Further, in a certain embodiment, the chute 22 includes a first slot and a second slot, the first slot and the second slot are respectively opened at two opposite end surfaces of the base 2, and the first slot is extended in a straight line toward the direction of the second slot.
Specifically, in the present embodiment, the base 2 is provided with two sliding grooves 22, and the two sliding grooves 22 are respectively opened at two opposite end surfaces of the base 2; the first notch and the second notch of the sliding slot 22 are also respectively formed at the two opposite end surfaces of the base 2, and the number and the structure of the connecting portions 13 of the limiting block 1 are matched with those of the sliding slot 22 of the base 2, and the first notch extends linearly towards the direction of the second notch, so that a user can transversely insert the limiting block 1 from one end of the base 2 and slide out from the other end of the base 2 through the base 2.
Further, in an embodiment, the stopper 1 and the base 2 are made of opaque materials.
Specifically, in this embodiment, in order to avoid the light generated when the secondary optical prism 3 is offset from being irradiated to the area other than the battery 4, and then damage other components, the base 2 and the stopper 1 of the light guiding structure are made of opaque materials, such as porcelain stone. The base 2 and the limiting block 1 made of the porcelain stone material can shield light rays in areas except the battery 4 due to light-tightness, and protect other parts.
Further, in an embodiment, the limiting block 1 and the base 2 are made of low heat conduction materials; or alternatively, the process may be performed,
the limiting block 1 and the base 2 are made of porcelain stone.
Specifically, in the present embodiment, the stopper 1 and the base 2 are made of low heat conductive materials, such as porcelain stone. The base 2 and the limiting block 1 made of porcelain stone can isolate heat generated by the secondary optical prism 3, so that other parts are protected.
Referring to fig. 3, the present utility model further provides a concentrating photovoltaic device, which includes the light guiding structure of any of the above embodiments. The concentrating photovoltaic device further comprises a substrate 5, said base 2 being connected to said substrate 5.
Specifically, in the present embodiment, the substrate 5 is used to connect the battery 4 and the electric wires related to the battery 4, and the light generated by the secondary optical prism 3 in the base 2 can be irradiated to the surface of the battery 4 of the substrate 5. An electrode wire outlet groove 24 is arranged at the bottom of the base 2, and wires electrically connected with the battery can pass through the electrode wire outlet groove 24 and lead to external equipment.
Further, in one embodiment, the base 2 is provided with a connection hole 23, and the base 2 is bolted to the base plate 5 through the connection hole 23. In this embodiment, the base 2 is provided with four connection holes 23 respectively located at four ends of the base 2, the substrate 5 is provided with corresponding through holes, and the base 2 and the substrate 5 can be fixedly connected by bolts.
Further, in an embodiment, the battery 4 is disposed on the substrate 5, a side surface of the base 2 close to the battery 4 is provided with a radiation opening 25, and a notch of the fixing groove 21 extends toward the radiation opening 25. In this embodiment, the radiation opening 25 is used for transmitting light, so that the light generated by the secondary optical prism 3 passes through the radiation opening 25 and then irradiates the surface of the battery 4.
Further, in an embodiment, a second blocking portion (not shown) is disposed in the fixing groove 21, and the second blocking portion is used for abutting against the secondary optical prism 3, so that a spacing distance between an end surface of the secondary optical prism 3 and a surface of the battery 4 is not less than 1 mm. By the arrangement, the secondary optical prism 3 can be effectively prevented from being in direct contact with the surface of the battery 4, and the secondary optical prism 3 is prevented from damaging the surface of the battery 4.
Further, in an embodiment, the concentrating photovoltaic device further includes a secondary optical prism 3, and a distance between an end surface of the secondary optical prism 3 and a surface of the battery 4 is less than or equal to 5% of a height of the secondary optical prism 3. So set up, can avoid the phenomenon that secondary optical prism 3 appears light loss, simultaneously, the inside wall surface of fixed slot 21 of this embodiment is smooth, can avoid causing the damage to secondary optical prism 3, also can avoid light absorption and light reflection loss's phenomenon simultaneously.
In summary, the light guide structure adopts the porcelain stone with extremely low heat conductivity coefficient, the secondary optical prism is detachably embedded on the substrate by utilizing the chute, and meanwhile, the end face of the secondary optical prism is arranged to keep a short distance from the surface of the battery piece, so that the requirement of light transmission is met, and meanwhile, the secondary optical prism cannot damage the surface of the battery or an electric wire or a packaging body; in addition, because the base and the limiting block adopt the porcelain stone with light-tight and low heat conductivity coefficient, the light generated by the secondary optical prism cannot irradiate to the area outside the battery, and shielding protection is formed for parts outside the battery.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (15)
1. A light guide structure, comprising:
a base, a base seat and a base seat,
the limiting block is connected to one side of the base; wherein, the liquid crystal display device comprises a liquid crystal display device,
a fixing groove for accommodating the secondary optical prism is formed in one end face of the base, the limiting block is connected to the notch of the fixing groove, and one side wall of the limiting block and the inner side wall of the fixing groove are abutted to the outer side wall of the secondary optical prism so that the secondary optical prism is fixed.
2. A light guide structure as claimed in claim 1, wherein the cross-sectional area of the notch of the fixing groove is gradually reduced toward the other end face of the base.
3. The light guide structure according to claim 1, wherein the stopper is provided with a light-transmitting groove.
4. A light guide structure as claimed in claim 3, wherein the stopper is provided with a first blocking portion at an edge of the light-transmitting groove, the first blocking portion being for abutting against the secondary optical prism in the fixing groove.
5. The light guide structure according to claim 4, wherein an area of the first blocking portion is less than or equal to 1% of an area of the light-transmitting groove.
6. The light guide structure of claim 1, wherein the stopper is detachably connected to the base.
7. The light guide structure according to claim 6, wherein the base is provided with a chute, the stopper is provided with a connecting portion matched with the chute, and the connecting portion is clamped in the chute, so that the stopper is slidably arranged relative to the base.
8. The light guide structure of claim 7, wherein the chute comprises a first notch and a second notch, the first notch and the second notch are respectively arranged at two opposite end surfaces of the base, and the first notch is arranged in a linear extending manner towards the direction of the second notch.
9. The light guide structure of claim 1, wherein the stopper and the base are made of opaque materials.
10. The light guide structure of claim 1, wherein the stopper and the base are made of a low thermal conductivity material.
11. A concentrating photovoltaic device comprising the light guide structure of any one of claims 1-10, further comprising a substrate, the base being attached to the substrate.
12. The concentrating photovoltaic apparatus according to claim 11, wherein the base is provided with a connection hole, and the base is bolted to the substrate through the connection hole.
13. The concentrating photovoltaic device according to claim 11, wherein a battery is provided on the substrate, a radiation opening is provided on a side surface of the base close to the battery, and a notch of the fixing groove is extended toward the radiation opening.
14. The concentrating photovoltaic device according to claim 13, wherein a second blocking portion is provided in the fixing groove, the second blocking portion being configured to abut against a secondary optical prism such that an end face of the secondary optical prism forms a separation distance of not less than 1mm from a surface of the battery.
15. The concentrated photovoltaic device of claim 14, further comprising a secondary optical prism having an end face spaced from a surface of the cell a distance less than or equal to 5% of a height of the secondary optical prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222945815.XU CN218958877U (en) | 2022-11-04 | 2022-11-04 | Light guide structure and concentrating photovoltaic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222945815.XU CN218958877U (en) | 2022-11-04 | 2022-11-04 | Light guide structure and concentrating photovoltaic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218958877U true CN218958877U (en) | 2023-05-02 |
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|---|---|---|---|
| CN202222945815.XU Active CN218958877U (en) | 2022-11-04 | 2022-11-04 | Light guide structure and concentrating photovoltaic device |
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| Country | Link |
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| CN (1) | CN218958877U (en) |
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