Photovoltaic high-concentration optical element

Abstract

The invention relates to the technical field of optical elements, in particular to a photovoltaic high-concentration type optical element, which comprises a substrate, a plurality of optical elements and a plurality of optical elements, the reflector is mounted in the placement area of the substrate; the fine adjustment mechanism comprises an inner shaft arranged in the placement area, a turntable rotationally arranged on the inner shaft, and a locking piece arranged on the inner shaft and used for positioning the turntable; the positioning mechanism is arranged on the rotary table and can position the reflector; the locking piece can be switched between a locking state and an unlocking state by adjusting the relative position of the positioning mechanism and the rotating disc. The reflector can be mounted on the turntable, and the angle of the reflector can be adjusted through rotation of the turntable, so that the light reflection position of the reflector can be adjusted, the whole optical element can be tested in the test stage after the reflector is mounted, and the reflector with reflected light deviating from a reflection focus is adjusted in the test process. Therefore, a state that reflected light rays are more concentrated is obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of optical elements, and in particular to a photovoltaic high-concentration optical element. Background Art

[0002] Due to the shortage of energy and global warming, promoting renewable energy and reducing greenhouse gas emissions has become an important task for the world. In this regard, photovoltaic power generation is a potential solution because it does not emit any greenhouse gases and pollutants. The development and popularization of photovoltaic power generation technology has achieved certain results, but there are still some problems, such as low efficiency of solar energy resource utilization and low efficiency of photovoltaic power generation system. As an important aspect of solar energy use, solar photovoltaic power generation has been quite mature after decades of development, especially the crystalline silicon solar photovoltaic power generation mode has been widely used because of the continuous reduction of cost. As other types of solar photovoltaic power generation, such as thin-film solar photovoltaic power generation and concentrated solar photovoltaic power generation, they are not widely used because of their poor cost performance compared with crystalline silicon solar photovoltaic power generation, and some are only demonstrative. The reason why thin-film solar photovoltaic power generation is not popular is that the power generation efficiency is low and the cost performance is not high. The efficiency of concentrated photovoltaic power generation is relatively high. At present, the highest photovoltaic efficiency of the chip exceeds 45%, which is twice the efficiency of crystalline silicon solar photovoltaic power generation.

[0003] A plurality of reflectors are installed on a substrate to reflect and focus direct light. The substrate is a curved plate. The reflectors are installed on the inner curved surface of the substrate to focus direct light. Although in theory, different reflectors can be designed differently according to the positions on the substrate to focus and reflect direct light sources, errors in manufacturing and installation may cause the problem of difficulty in focusing the light emitted by the reflectors installed on the substrate. Summary of the invention

[0004] In view of the problem that the above-mentioned existing photovoltaic high-concentration optical elements have poor focusing effect, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a photovoltaic high-concentration optical element.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising: a substrate, on which a placement area is provided; a reflector, which is installed in the placement area of ​​the substrate; a fine-tuning mechanism, comprising an inner shaft arranged in the placement area, a turntable rotatably arranged on the inner shaft, and a locking member arranged on the inner shaft for positioning the turntable; and a positioning mechanism, which is arranged on the turntable and can position the reflector; by adjusting the relative position of the positioning mechanism and the turntable, the locking member can be switched between a locked state and an unlocked state.

[0007] As a preferred solution of the photovoltaic high-concentration optical element of the present invention, the longitudinal cross-section of the substrate has a first curvature, and the transverse cross-section of the substrate has a second curvature; the first curvature is the same as the second curvature.

[0008] As a preferred solution of the photovoltaic high-concentration optical element described in the present invention, the locking member includes an inner disk fixed on the inner shaft, a accommodating cavity opened on the inner disk, and an insertion component arranged on the inner side of the accommodating cavity; the turntable is annular, and an inner cavity is opened between its radial outer wall and the radial inner part, and the turntable and the inner cavity are provided with a plurality of slots arranged in an arc shape; the insertion component can be inserted into the inner side of the slot.

[0009] As a preferred solution of the photovoltaic high-concentration optical element described in the present invention, the positioning mechanism includes a shift rod, one end of which is located on the inner side of the inner cavity, and the other end extends to the outside of the inner cavity; a contact spring is fixed to the end of the shift rod located on the inner side of the inner cavity; the insertion component has symmetrically arranged feet, which are located on the inner side of the accommodating cavity and maintained in a bent state, and the insertion component also has a front end head, which passes through the inner disk and can extend to the inner side of the slot.

[0010] As a preferred solution of the photovoltaic high-concentration optical element of the present invention, the inner cavity includes an outer opening penetrating the radial outer wall of the rotating disk, an inner opening penetrating the radial inner wall of the rotating disk, and the inner cavity has two parallel sides connected to the inner opening, and oblique sides respectively connected to the two parallel sides;

[0011] The contact spring has two expansion arms respectively connected to two oblique sides, and a contact head extending between the two parallel sides.

[0012] As a preferred solution of the photovoltaic high-concentration optical element described in the present invention, one side of the reflector is a mirror surface, and a back frame is provided on the side of the reflector away from the mirror surface; the positioning mechanism includes a connecting clip provided at the end of the shift rod on the outer side of the inner cavity; the connecting clip can be clamped with the back frame.

[0013] As a preferred solution of the photovoltaic high-concentration optical element described in the present invention, it also includes an auxiliary mechanism; it includes a contact piece, which is slidably arranged on the shift rod, and the connecting clamp is fixed on the contact piece; a clamping piece, which is fixed on the shift rod; when the clamping piece is located outside the inner cavity, the contact piece can push the clamping piece to push the shift rod to move, and when the clamping piece is located inside the inner cavity, the clamping piece can position the contact piece.

[0014] As a preferred solution of the photovoltaic high-concentration optical element of the present invention, the clamping member has a fixed end connected to the shift rod, a pressure-bearing side connected to the fixed end, an anti-slip side that can be buckled at the external opening, and a hook opening away from the fixed end;

[0015] The resisting piece has an extension arm, and a hook groove is formed on the extension arm.

[0016] As a preferred solution of the photovoltaic high-concentration optical element described in the present invention, the connecting clamp has a folding section and a clip arranged at the end of the folding section; a limiting member is arranged on the shift rod, and the limiting member includes a protruding member fixed on the shift rod, and a contact cross column arranged on the protruding member and abutting against the folding section.

[0017] As a preferred solution of the photovoltaic high-concentration optical element of the present invention, a through groove is provided on the shift rod, and the abutment piece is slidably arranged inside the through groove.

[0018] The beneficial effects of the present invention are as follows: through the positioning mechanism, the reflector can be installed on the turntable, and through the rotation of the turntable, the angle of the reflector can be adjusted, thereby adjusting the light reflection position of the reflector, so that after the installation is completed, the entire optical element can be tested in the test phase, and during the test, the reflector is adjusted to deviate from the reflection focus, thereby obtaining a state in which the reflected light is more concentrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the photovoltaic high-concentration optical element of the present invention.

[0021] Figure 2 It is a schematic diagram of the reflection focus of the photovoltaic high-concentration optical element of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of a single reflector in the present invention.

[0023] Figure 4 It is a cross-sectional view of the installation state of a single reflector in the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the fine-tuning mechanism in the present invention.

[0025] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle.

[0026] Figure 7 It is a schematic diagram of the auxiliary mechanism structure in the present invention.

[0027] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle.

[0028] Fig. 9 Schematic diagram of the first stage of installation of the reflector.

[0029] Fig.10 Schematic diagram of the second stage of installation for the reflector.

[0030] Fig.11 Schematic diagram of the third stage of reflector installation.

[0031] Reference numerals: 100, substrate; 101, placement area; 200, reflector; 201, mirror; 202, back frame; 300, fine adjustment mechanism; 301, inner shaft; 302, locking member; 302a, inner disk; 302b, accommodating cavity; 302c, insertion member; 302d, support foot; 302e, front end head; 303, turntable; 304, inner cavity; 304a, external opening; 304a-1, outer corner; 304a-2, inner corner; 304b, inner opening; 304c, parallel side; 304d, oblique side; 305, slot; 400, fixed Positioning mechanism; 401, shift rod; 401a, through slot; 402, contact spring; 402a, expansion arm; 402b, contact head; 403, connecting clip; 403a, retraction section; 403b, clip; 404, limiting member; 404a, protruding member; 404b, contact cross column; 500, auxiliary mechanism; 501, abutment sheet; 501a, extension arm; 501b, hook slot; 501c, concave surface; 502, clamping member; 502a, fixed end; 502b, pressure side; 502c, anti-slip side; 502d, hook mouth; L, reflection focus. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0036] Example 1, reference Figures 1 to 7 , provides a photovoltaic high-concentration optical element, including a substrate 100, on which a placement area 101 is arranged; the substrate 100 as a whole has a certain curvature, the longitudinal cross-section of the substrate 100 has a first curvature, and the transverse cross-section of the substrate 100 has a second curvature; the first curvature is the same as the second curvature, such as Figure 2 The purpose is to allow the substrate 100 to have a virtual reflection focus L, which is the focusing point of the reflected light of the entire optical element. Installing optoelectronic devices, optoelectronic materials, thermoelectric devices, and thermoelectric materials at this position can generate electrical energy more efficiently.

[0037] The structure for reflecting the light source is a reflector 200, which is installed in the placement area 101 of the substrate 100; on the substrate 100, there are many placement areas 101 arranged, these placement areas 101 are arranged vertically to form a first curvature, and are arranged horizontally to form a second curvature. The reflector 200 is installed in these placement areas 101. The purpose is to allow the reflector 200 to reflect the light to the reflection focus L of the optical element after the light is irradiated by the reflector 200. Of course, in order to obtain a better reflection effect, these reflectors 200 have a certain curvature, and the curvature of each reflector 200 varies according to its position on the substrate 100, so as to better gather light.

[0038] In order to avoid the problem of poor focusing ability of the light reflected by the entire optical element due to production errors and installation errors, the optical element also includes a fine-tuning mechanism 300, including an inner shaft 301 arranged in the installation area 101, a turntable 303 rotatably arranged on the inner shaft 301, and a locking member 302 arranged on the inner shaft 301 for positioning the turntable 303; and a positioning mechanism 400, which is arranged on the turntable 303 and can position the reflector 200; by adjusting the relative position of the positioning mechanism 400 and the turntable 303, the locking member 302 can be switched between a locked state and an unlocked state.

[0039] Therefore, through the positioning mechanism 400, the reflector 200 can be installed on the turntable 303. By rotating the turntable 303, the angle of the reflector 200 can be adjusted, thereby adjusting the light reflection position of the reflector 200. After the installation is completed, the entire optical element can be tested in the test phase. During the test, the reflector 200 is adjusted so that the reflected light deviates from the reflection focus L, thereby obtaining a state in which the reflected light is more concentrated.

[0040] Furthermore, the locking member 302 includes an inner disk 302a fixed on the inner shaft 301, a accommodating cavity 302b opened on the inner disk 302a, and an insertion component 302c arranged on the inner side of the accommodating cavity 302b; the turntable 303 is annular, and an inner cavity 304 is opened between its radial outer wall and the radial inner part, and a plurality of arc-shaped slots 305 are opened between the turntable 303 and the inner cavity 304; the insertion component 302c can be inserted into the inner side of the slot 305.

[0041] The arc formed by these slots 305 is coaxial with the inner disk 302a. When the insertion component 302c is detached from the inside of the slot 305, the turntable 303 can rotate. When the insertion component 302c is reinserted into the inner side of another slot 305, the position of the turntable 303 will be locked. Therefore, when the reflector 200 is installed on the turntable 303 by the positioning mechanism 400, the rotation of the turntable 303 will drive the reflector 200 to rotate, thereby adjusting the reflector 200.

[0042] Furthermore, the positioning mechanism 400 includes a shift rod 401, one end of which is located on the inner side of the inner cavity 304 and the other end of which extends to the outer side of the inner cavity 304; a contact spring 402, which is fixed to the end of the shift rod 401 located on the inner side of the inner cavity 304; an insertion member 302c having symmetrically arranged legs 302d, the legs 302d being located on the inner side of the accommodating cavity 302b and maintained in a bent state, and the insertion member 302c also having a front end head 302e, the front end head 302e passes through the inner disk 302a and can extend to the inner side of the slot 305.

[0043] The two legs 302d are bent to allow them to have a certain degree of elasticity. After the front end head 302e is pressed, it can detach from the inner side of the slot 305. When the pressing force disappears, the front end head 302e will be pushed back to the inner side of the slot 305 under the action of the elastic force of the two legs 302d.

[0044] The reflector 200 is installed at one end of the shift rod 401 that is outside the inner cavity 304. The contact spring 402 has a certain elasticity. Under normal conditions, the contact spring 402 and the inner wall of the inner cavity 304 are in conflict, so that it cannot contact the front end head 302e of the insertion component 302c. When the shift rod 401 is subjected to a pressing force toward the center of the turntable 303, the shift rod 401 can push the contact spring 402 to press the front end head 302e, so that the front end head 302e is detached from the inside of the slot 305. At this time, the entire turntable 303 can rotate. In actual use, the reflector 200 is pressed, and then it can be rotated. Of course, after the reflector 200 is released, the reaction force of the contact spring 402 will be reset, and the front end head 302e will be inserted into the inner side of the slot 305 again to complete the positioning of the reflector 200.

[0045] Example 2, reference Figures 5 to 7 This embodiment is different from the first embodiment in that: the inner cavity 304 includes an outer opening 304a that penetrates to the radial outer wall of the turntable 303, an inner opening 304b that penetrates to the radial inner wall of the turntable 303, the inner cavity 304 has two parallel sides 304c connected to the inner opening 304b, and oblique sides 304d respectively connected to the two parallel sides 304c; the contact spring 402 has two expansion arms 402a respectively connected to the two oblique sides 304d, and a contact head 402b extending between the two parallel sides 304c.

[0046] In a normal state, each turntable 303 at a different position on the substrate 100 has a preferred initial angle, which is set according to the specific position of each turntable 303 on the substrate 100. It can ensure that after the reflector 200 is initially installed, the direction of the light reflected by the reflector 200 will not deviate too much from the reflection focus L.

[0047] One end of the shift rod 401 is inserted into the inner side of the inner cavity 304 through the external opening 304a. Under normal conditions, because the expansion arm 402a contacts the oblique side 304d, the contact head 402b cannot contact the front end head 302e of the insertion component 302c. Therefore, whether in transportation or installation, it can avoid the problem that the front end head 302e of the insertion component 302c is pressed and causes the turntable 303 to deviate from the initial angle, so that after the reflector 200 is initially installed, the reflector 200 can obtain a higher installation accuracy.

[0048] The rest of the structure is the same as that of Example 1.

[0049] Example 3, reference Figures 4 to 7This embodiment is different from the above embodiments in that: one side of the reflector 200 is a mirror surface 201, and a back frame 202 is provided on the side of the reflector 200 away from the mirror surface 201; the positioning mechanism 400 includes a connecting clip 403 provided at the outer end of the shift rod 401 in the inner cavity 304; the connecting clip 403 can be clamped with the back frame 202.

[0050] By connecting the back frame 202 and the connecting clamp 403, the reflector 200 can be installed on the entire positioning mechanism 400, so that the relative fixation with the turntable 303 is completed through the positioning mechanism 400. When the turntable 303 rotates, the reflector 200 can be driven to rotate through the shift rod 401 and the connecting clamp 403, thereby completing the adjustment of the reflector 200.

[0051] The rest of the structure is the same as that of Example 2.

[0052] Example 4, reference Figures 7 to 11 This embodiment is different from the above embodiments in that: in order to further improve stability, the photovoltaic high-concentration optical element also includes an auxiliary mechanism 500; it includes a resistance piece 501, which is slidably arranged on the shift rod 401, and a connecting clip 403 is fixed on the resistance piece 501; a clamping piece 502, which is fixed on the shift rod 401; when the clamping piece 502 is located outside the inner cavity 304, the resistance piece 501 can push the clamping piece 502 to push the shift rod 401 to move, and when the clamping piece 502 is located inside the inner cavity 304, the clamping piece 502 can position the resistance piece 501.

[0053] Before installation, the end of the contact piece 501 abuts against the end of the clip 502. During installation, the back clamp of the reflector 200 abuts against the connecting clip 403, so that the connecting clip 403 applies a thrust to the contact piece 501. The contact piece 501 can push the clip 502, so that the clip 502 enters the inner cavity 304 and completes the positioning. After positioning, the clip 502 completes the locking of the contact piece 501, thereby maintaining the stability of the connecting clip 403 locking the back clamp of the reflector 200.

[0054] Specifically, Figure 8 The clamping member 502 has a fixed end 502a connected to the shift rod 401, a pressure side 502b connected to the fixed end 502a, an anti-slip side 502c that can be buckled at the external opening 304a, and a hook mouth 502d away from the fixed end 502a; the contact piece 501 has an extension arm 501a, and a hook groove 501b is provided on the extension arm 501a.

[0055] A through slot 401 a is formed on the shift rod 401 , and the abutment piece 501 is slidably disposed inside the through slot 401 a . The abutment piece 501 can move parallel to the longer side of the shift rod 401 .

[0056] A clamping member 502 and a contact piece 501 are installed on both sides of the shift rod 401. When the reflector 200 is installed, the back frame 202 of the reflector 200 pushes the connecting clip 403, and the end of the connecting clip 403 pushes the end of the clamping member 502 with a hook 502d. Fig. 9 At this time, the clamping member 502 transmits the force to the shift rod 401, and the shift rod 401 pushes the contact spring 402 to move toward the center of the rotating disk 303, and the compressed side 502b of the clamping member 502 begins to contact the outer corner 304a-1 of the external opening 304a. At this time, under the action of the thrust, the end of the clamping member 502 with the hook 502d deflects toward the shift rod 401. The above stage is the first stage.

[0057] Then as Fig.10 When the end of the clip 502 with the hook 502d reaches the gap between the extension arm 501a and the shift rod 401, the extension arm 501a and the hook 502d are misaligned. At this time, the extension arm 501a of the contact sheet 501 no longer pushes the clip 502, but moves itself until the inner concave surface 501c of the contact sheet 501 begins to contact the clip 502, which pushes the clip 502 to move again. During this process, the contact spring 402 is pressed. The above stage is the second stage.

[0058] like Fig.11 Finally, when the pressure side 502b completely passes through the external opening 304a, its elasticity allows the clamp 502 to restore its deformation. During this process, the anti-slip side 502c of the clamp 502 completes the interference with the inner corner 304a-2 of the external opening 304a. At the same time, the hook mouth 502d is buckled into the inner side of the hook groove 501b. The above stage is the third stage, which completes the positioning of the interference piece 501, and also positions the interference piece 501, the connecting clip 403, and the reflector 200 on the turntable 303.

[0059] Furthermore, the connecting clamp 403 has a folding section 403a and a clamping piece 403b arranged at the end of the folding section 403a; a limiting member 404 is arranged on the shift rod 401, and the limiting member 404 includes a protruding member 404a fixed on the shift rod 401, and a contact horizontal column 404b arranged on the protruding member 404a and abutting against the folding section 403a.

[0060] In the first stage, the clip 403b of the connecting clip 403 completes the clamping of the reflector 200 back frame 202, and the entire folding section 403a has a certain elasticity, and the two folding sections 403a form an eight-shaped shape. In the second stage, when the contact piece 501 moves relative to the clamping piece 502, the folding section 403a moves relative to the contact cross column 404b, and the folding section 403a will be resisted by the contact cross column 404b during the movement, and the two will converge toward the direction of the shift rod 401, thereby improving the stability of the positioning of the back frame 202.

[0061] It should also be noted that when reaching the third stage, after the anti-disengagement side 502c of the clamp 502 completes the interference with the inner corner 304a-2 of the external opening 304a, the entire contact spring 402 still has a certain distance from the front end head 302e. The purpose of this setting is to allow the front end head 302e to be pressed out of the slot 305 only when needed.

[0062] The rest of the structure is the same as that of Example 3.

[0063] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0064] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0065] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, without undue experimentation, the development effort will be a routine task of design, fabrication, and production.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A photovoltaic high-concentration optical element, characterized in that: include, A substrate (100) having a placement area (101) disposed thereon; A reflector (200) mounted on the installation area (101) of the substrate (100); A fine-tuning mechanism (300) comprising an inner shaft (301) disposed in the placement area (101), a turntable (303) rotatably disposed on the inner shaft (301), and a locking member (302) disposed on the inner shaft (301) for positioning the turntable (303); and, a positioning mechanism (400), which is disposed on the rotating disk (303) and is capable of positioning the reflector (200); By adjusting the relative position of the positioning mechanism (400) and the rotating disk (303), the locking member (302) can be switched between a locked state and an unlocked state.

2. The photovoltaic high concentration optical element according to claim 1, characterized in that: The longitudinal cross section of the substrate (100) has a first curvature, and the transverse cross section of the substrate (100) has a second curvature; The first arc is the same as the second arc.

3. The photovoltaic high concentration optical element according to claim 1 or 2, characterized in that: The locking member (302) comprises an inner disk (302a) fixed on the inner shaft (301), a receiving cavity (302b) opened on the inner disk (302a), and an insertion member (302c) arranged inside the receiving cavity (302b); The rotating disk (303) is annular, and an inner cavity (304) is provided between the radial outer wall and the radial inner portion thereof; the rotating disk (303) and the inner cavity (304) are provided with a plurality of slots (305) arranged in an arc shape; The insertion member (302c) can be inserted into the inner side of the slot (305).

4. The photovoltaic high concentration optical element according to claim 3, characterized in that: The positioning mechanism (400) comprises: A shift rod (401), one end of which is located inside the inner cavity (304) and the other end of which extends to the outside of the inner cavity (304); A contact spring (402) is fixed to the end of the shift rod (401) located inside the inner cavity (304).

5. The photovoltaic high concentration optical element according to claim 4, characterized in that: The insertion component (302c) has symmetrically arranged supporting feet (302d), the supporting feet (302d) are located on the inner side of the accommodating cavity (302b) and remain in a bent state, and the insertion component (302c) also has a front end head (302e), and the front end head (302e) penetrates the inner disk (302a) and can extend to the inner side of the slot (305).

6. The photovoltaic high concentration optical element according to claim 5, characterized in that: The inner cavity (304) comprises an outer opening (304a) penetrating to the radial outer wall of the rotating disk (303), an inner opening (304b) penetrating to the radial inner wall of the rotating disk (303), and the inner cavity (304) has two parallel sides (304c) connected to the inner opening (304b), and oblique sides (304d) respectively connected to the two parallel sides (304c); The contact spring (402) has two expansion arms (402a) respectively connected to the two oblique sides (304d), and a contact head (402b) extending between the two parallel sides (304c).

7. The photovoltaic high concentration optical element according to claim 6, characterized in that: One side of the reflector (200) is a mirror surface (201), and a back frame (202) is provided on the side of the reflector (200) away from the mirror surface (201).

8. The photovoltaic high concentration optical element according to claim 7, characterized in that: The positioning mechanism (400) comprises a connecting clamp (403) provided at the end of the shift rod (401) outside the inner cavity (304); The connecting clip (403) can be snap-connected with the back frame (202).

9. The photovoltaic high concentration optical element according to claim 8, characterized in that: Also included is an auxiliary mechanism (500); which includes, A resisting piece (501) is slidably disposed on the shifting rod (401), and the connecting clip (403) is fixed on the resisting piece (501); A clamping member (502) is fixed on the shifting rod (401).

10. The photovoltaic high concentration optical element according to claim 9, characterized in that: When the clamping component (502) is located outside the inner cavity (304), the abutment sheet (501) can push the clamping component (502) and thereby push the shift rod (401) to move; when the clamping component (502) is located inside the inner cavity (304), the clamping component (502) can position the abutment sheet (501).

11. The photovoltaic high concentration optical element according to claim 10, characterized in that: The clamping member (502) comprises a fixed end (502a) connected to the shift rod (401), a pressure-bearing side (502b) connected to the fixed end (502a), an anti-slip side (502c) capable of being buckled at the external opening (304a), and a hook opening (502d) away from the fixed end (502a).

12. The photovoltaic high concentration optical element according to claim 11, characterized in that: The resisting piece (501) has an extension arm (501a), and a hook groove (501b) is provided on the extension arm (501a).

13. The photovoltaic high concentration optical element according to claim 12, characterized in that: The connecting clip (403) comprises a folding section (403a) and a clamping piece (403b) arranged at the end of the folding section (403a).

14. The photovoltaic high concentration optical element according to claim 13, characterized in that: A limiting member (404) is provided on the shift rod (401), and the limiting member (404) comprises a protruding member (404a) fixed on the shift rod (401), and a contact horizontal column (404b) provided on the protruding member (404a) and abutting against the retracted section (403a).

15. The photovoltaic high concentration optical element according to claim 10, 12 or 14, characterized in that: The shift rod (401) is provided with a through slot (401a), and the abutment sheet (501) is slidably disposed inside the through slot (401a).

Images