CCLFR concentrating solar photovoltaic system and power generation equipment

Abstract

The invention belongs to the field of solar photovoltaics, and provides a CCLFR concentrating solar photovoltaic system and power generation equipment. The CCLFR concentrating solar photovoltaic system comprises a CCLFR concentrator, a supporting structure and PV assemblies which are arranged from bottom to top, wherein the PV assemblies are symmetrical left and right; the CCLFR condenser is of an axisymmetric structure and is a condensing mirror field formed by alternately arranging a plurality of plane mirrors; each plane mirror is used for reflecting incident light to the surface of the corresponding PV assembly; wherein the layout of each plane mirror is related to the width of the battery, the placement height of the photovoltaic battery, the inclination angle of the photovoltaic battery, the inclination angle of the mirror surface, the X-axis coordinate value of the mirror surface end point, the included angle between the reflection light of the mirror surface end point and the X axis, the width of the mirror surface, the width of the mirror field and the transverse distance between two adjacent mirror surfaces.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of solar photovoltaic, and particularly relates to a CCLFR concentrated solar photovoltaic system and power generation equipment. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] Solar photovoltaic (PV) power generation technology gradually occupies the core position of new energy power generation due to its advantages of abundant resources, clean and pollution-free. However, the traditional flat plate PV system faces the following technical bottlenecks: the solar radiation energy density is limited, the power generation capacity per unit PV cell area is limited, and the solar energy resources are wasted.

[0004] In order to break through the above bottleneck, the prior art proposes a concentrated PV system, which converges sunlight through optical elements, greatly improves the light energy flow density per unit PV cell area, thereby significantly reduces the amount of expensive semiconductor materials, improves the power output of the PV system and improves the PV power generation efficiency. In view of the problem that the linear Fresnel concentrator system has poor light concentration uniformity, which leads to uneven heat flow density on the surface of the heat collecting pipe, four Fresnel lenses with specific angles and focal point distribution are arranged above the heat collecting pipe, and a symmetrical mirror is arranged below to reflect unfocused light, so as to realize uniform focusing of light in all directions to the heat collecting pipe, thereby improving the light concentration uniformity and reducing the risk of uneven heat collection.

[0005] However, in the above system, the four lenses need to be accurately controlled in angle and mirror symmetry, which is difficult to assemble and calibrate. The complex optical design may require higher precision manufacturing process to ensure that each component meets the design requirements, which will undoubtedly increase the manufacturing cost. And the wing-shaped lens structure has a large exposed area, which is easy to deform and deviate under strong wind, affecting the light concentration accuracy. SUMMARY

[0006] In order to solve the technical problems existing in the background art, the present application provides a CCLFR concentrated solar photovoltaic system and power generation equipment, which can reduce the amount of PV cells, increase the utilization of solar radiation energy, and significantly improve the output power and photoelectric conversion efficiency of the PV system.

[0007] In order to achieve the above purpose, the present application adopts the following technical solutions: The first aspect of the present application provides a CCLFR concentrated solar photovoltaic system.

[0008] A CCLFR concentrated solar photovoltaic system, comprising: a CCLFR concentrator from bottom to top, a support structure, and a left-right symmetrical PV assembly. The CCLFR concentrator has an axisymmetric structure and is a concentrating mirror field composed of multiple plane mirrors arranged alternately; each plane mirror is used to reflect the incident light onto the surface of the corresponding PV module. The arrangement of each planar reflector is related to the width of the battery, the height of the photovoltaic cell, the tilt angle of the photovoltaic cell, the tilt angle of the mirror, the X-axis coordinate value of the mirror endpoint, the angle between the reflected light from the mirror endpoint and the X-axis, the width of the mirror, the width of the mirror field, and the lateral distance between two adjacent mirrors.

[0009] As one implementation, for the i-th plane mirror closest to both sides of the axis of symmetry, when i ≥ 3, if i is an odd number, then:

[0010]

[0011]

[0012]

[0013] Among them, if ,and Then the first i The mirror and the first i -1 lateral distance between mirrors c i =0; L is half the width of the battery; h is the placement height of the photovoltaic cell; φ is the tilt angle of the photovoltaic cell; x i For the first i The coordinates of the starting point X of each plane mirror; δ i For the first i An angle of inclination for a plane mirror; gamma i For the first i The angle between the reflected ray from the endpoint where the plane mirror intersects the X-axis and the X-axis; a i For the first i The width of a plane mirror.

[0014] As one implementation, for the i-th plane mirror closest to both sides of the axis of symmetry, when i ≥ 3, if i is an odd number, then:

[0015]

[0016]

[0017]

[0018]

[0019]

[0020] Among them, the i The mirror and the first i -1 lateral distance between mirrors c i Not 0; L is half the width of the battery; h is the placement height of the photovoltaic cell; φ is the tilt angle of the photovoltaic cell; x i For the first i The coordinates of the starting point X of each plane mirror; δ i For the first i An angle of inclination for a plane mirror; gamma i For the first i The angle between the reflected ray from the endpoint where the plane mirror intersects the X-axis and the X-axis; a i For the first i The width of a plane mirror.

[0021] As one implementation, for the i-th plane mirror closest to both sides of the axis of symmetry, when i ≥ 3, if i is an even number, then:

[0022]

[0023]

[0024]

[0025]

[0026] Among them, for the formula ,when and When both are not true at the same time, c i-1 That is, 0; L is 1 / 2 of the battery width; h is the placement height of the photovoltaic cell; φ is the tilt angle of the photovoltaic cell; x i For the first i The coordinates of the starting point X of each plane mirror; δ i For the first i An angle of inclination for a plane mirror; gamma i For the first i The angle between the reflected ray from the endpoint where the plane mirror intersects the X-axis and the X-axis; a i For the first i The width of a plane mirror.

[0027] As an embodiment, the calculation equation of the two first plane mirrors near the two sides of the symmetry axis is: ; ; ; ; wherein L is 1 / 2 of the width of the battery; h is the height of the photovoltaic battery; φ is the tilt angle of the photovoltaic battery; x1 is the X-axis coordinate value of the first plane mirror near the axis symmetry end point; δ1 is the tilt angle of the first plane mirror; γ1 is the angle between the reflected light of the first plane mirror near the axis symmetry end and the X-axis; a 1 is the width of the first plane mirror.

[0028] As an embodiment, the two second plane mirrors near the two sides of the symmetry axis, c2=0, and the equation set of the mirror surface is:

[0029]

[0030]

[0031]

[0032] wherein D is the width of the mirror field; L is 1 / 2 of the width of the battery; h is the height of the photovoltaic battery; φ is the tilt angle of the photovoltaic battery; x2 is the X-axis coordinate value of the second plane mirror near the axis symmetry end point; δ2 is the tilt angle of the second plane mirror; γ2 is the angle between the reflected light of the second plane mirror far from the axis symmetry end and the X-axis; a 2 is the width of the second plane mirror.

[0033] As an embodiment, the support structure adopts a modular adjustable fixing structure.

[0034] As an embodiment, the support structure is paved with multiple layers of anti-corrosion coating.

[0035] As an embodiment, the PV assembly is a single crystal silicon PV battery.

[0036] The second aspect of the present application provides a power generation device comprising the above-mentioned CCLFR concentrated solar photovoltaic system.

[0037] The present application has the following beneficial effects: The application first combines the CCLFR concentrator and the double PV assembly, and realizes the design of the concentrating PV system with high light field utilization and high light uniformity. By proposing the optimization design method of the CCLFR concentrator, the shadow and shielding problems of the traditional LFR concentrator are avoided. The light uniformity and light field utilization of the PV assembly surface of the CCLFR concentrating PV system proposed by the application are improved compared with the PV system based on the traditional LFR concentrator, and the application has more advantages in light uniformity, photoelectric conversion efficiency and avoiding local overheating of the PV cell compared with the traditional trough-type concentrating PV system.

[0038] The CCLFR concentrating PV system proposed by the application provides an expandable technical path for efficient utilization of solar energy. The modular design allows the power generation to be linearly improved by increasing the mirror unit, and the light uniformity will not decrease significantly with the scale expansion, so it has the scalability of the scale and can be applied to small, medium and large concentrating PV power generation occasions. At the same time, the CCLFR concentrating PV system uses a large number of plane mirrors, so the cost is relatively low. Compared with the dish concentrator and the trough concentrator, the cost of the CCLFR concentrator can be reduced by more than 50%, and the installation and maintenance difficulty is greatly reduced. Therefore, the CCLFR concentrating PV system proposed by the application has certain engineering application potential.

[0039] The advantages of the additional aspects of the application will be partially given in the following description, partially become obvious from the following description, or be known by the practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0040] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description of the exemplary embodiments of the application and the explanation thereof serve to explain the application, and do not constitute an improper limitation of the application.

[0041] Figure 1 is a structural schematic diagram of a CCLFR concentrating solar photovoltaic system of an embodiment of the application; Figure 2 is a light path principle diagram of a CCLFR concentrating solar photovoltaic system of an embodiment of the application. DETAILED DESCRIPTION

[0042] The application will be further described below in combination with the drawings and embodiments.

[0043] It should be pointed out that the following detailed description is all exemplary, and is intended to provide further explanation of the application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the application belongs.

[0044] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0045] In the present application, the terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is a relationship word determined only for the purpose of describing the structural relationship of the components or elements of the present application, and cannot be understood as a limitation on the present application.

[0046] In the present application, the terms such as "fixedly connected", "connected", "connected" and the like should be understood broadly, which means that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. For relevant researchers or technicians in the art, the specific meaning of the above terms in the present application can be determined according to the specific circumstances, and cannot be understood as a limitation on the present application.

[0047] In order to overcome the above-mentioned defects existing in the prior art, the present application provides a complete compact linear Fresnel reflector (CCLFR) solar concentrating PV system with high light concentration uniformity, and an innovative design method of the system is given to solve the problems of limited solar radiation energy density, limited space for improving power generation per unit PV cell area, and low comprehensive utilization of solar energy in the background art. By proposing an innovative concentrating technology and adopting a suitable PV system structure, the use of PV cells is reduced, the utilization of solar radiation energy is increased, and thus the output power and photoelectric conversion efficiency of the PV system are significantly improved.

[0048] As shown in Figure 1 and Figure 2 A CCLFR concentrating solar photovoltaic system according to an embodiment of the present application includes, from bottom to top, a CCLFR concentrator 1, a support structure 3, and left-right symmetrical PV assemblies 2. The CCLFR concentrator 1 has an axisymmetric structure and is a concentrator field composed of a plurality of plane mirrors arranged alternately; each plane mirror is used to reflect incident light 4 onto the surface of the corresponding PV assembly; the symmetry axis is 6; and the reflected light is 5. Each planar mirror is related to the battery width, the photovoltaic cell placement height, the photovoltaic cell inclination angle, the mirror surface inclination angle, the mirror surface endpoint X-axis coordinate value, the mirror surface endpoint reflected light and the X-axis angle, the mirror surface width, the mirror field width, and the lateral distance between two adjacent mirror surfaces.

[0049] The CCLFR concentrator 1 of the embodiment is a planar mirror field in which all mirror surfaces are alternately arranged. Through certain optical geometric design, the sunlight is respectively concentrated and reflected to the surface of the corresponding solar PV assembly by using multiple mirror units. Since the CCLFR concentrator is composed of planar mirrors, the concentrated light distribution is more uniform. In addition, according to special optical geometric design, the structure of the concentrator can be more compact.

[0050] The CCLFR concentrator planar mirror field is composed of multiple (such as 44) planar mirrors with specific inclination angles and specific lengths arranged alternately. The inclination angle of the mirror is optimized and designed to enable the sunlight to be directionally reflected in the planar mirror field and reach the preset light concentration target. The length and position of the mirror are optimized and designed to reduce the gap between adjacent mirrors and the gap in the entire CCLFR concentrator light field, reduce light leakage, and thus improve the light field utilization efficiency of the CCFLR concentrator. Compared with the traditional linear Fresnel (LFR) concentrator, the designed CCLFR system has higher solar light field utilization rate.

[0051] For example, in the CCLFR concentrating PV system, the mirror field width of the CCLFR concentrator is 2000.0 mm, and is composed of 44 planar mirrors and necessary connecting structures, and the connecting structure material is aluminum alloy. The light field utilization rate of the CCLFR concentrator is 0.987.

[0052] The installation height of the two groups of PV assemblies is 1000.0 mm, the width of a single PV assembly is 60.0 mm, and the installation inclination angle is 0.0°. The PV assembly is composed of monocrystalline silicon PV cells in series.

[0053] The design method of the CCLFR concentrating PV system is as follows: for the i-th planar mirror close to the two sides of the symmetry axis, when i≥3, if i is odd, then:

[0054]

[0055]

[0056]

[0057] If , and , the i-th planar mirror isi The mirror and the first i -1 lateral distance between mirrors c i =0; L is half the width of the battery; h is the placement height of the photovoltaic cell; φ is the tilt angle of the photovoltaic cell; x i For the first i The coordinates of the starting point X of each plane mirror; δ i For the first i An angle of inclination for a plane mirror; gamma i For the first i The angle between the reflected ray from the endpoint where the plane mirror intersects the X-axis and the X-axis; a i For the first i The width of a plane mirror.

[0058] For the i-th plane mirror closest to both sides of the axis of symmetry, when i ≥ 3, if i is an odd number, then:

[0059]

[0060]

[0061]

[0062]

[0063]

[0064] Among them, the i The mirror and the first i -1 lateral distance between mirrors c i Not 0; L is half the width of the battery; h is the placement height of the photovoltaic cell; φ is the tilt angle of the photovoltaic cell; x i For the first i The coordinates of the starting point X of each plane mirror; δ i For the first i An angle of inclination for a plane mirror; gamma i For the first i The angle between the reflected ray from the endpoint where the plane mirror intersects the X-axis and the X-axis; a i For the first i The width of a plane mirror.

[0065] For the i-th plane mirror closest to both sides of the axis of symmetry, when i ≥ 3, if i is an even number, then:

[0066]

[0067]

[0068]

[0069]

[0070] wherein, for formula when and are not true at the same time, c i-1 0; L is 1 / 2 of the width of the battery; h is the height of the photovoltaic cell placement; φ is the inclination angle of the photovoltaic cell; x i is the coordinate value of the starting point X of the first i plane mirror; δ i is the inclination angle of the first i plane mirror; gamma i is the angle between the reflected light and the X axis of the end point of the first i plane mirror intersecting with the X axis; a i is the width of the first i plane mirror.

[0071] The calculation equation of the two first plane mirrors close to the two sides of the symmetry axis is: ; ; ; ; wherein, L is 1 / 2 of the width of the battery; h is the height of the photovoltaic cell placement; φ is the inclination angle of the photovoltaic cell; x1 is the coordinate value of the symmetry axis end point X of the first plane mirror close to the axis; δ1 is the inclination angle of the first plane mirror; γ1 is the angle between the reflected light and the X axis of the first plane mirror close to the symmetry axis end; a 1 is the width of the first plane mirror.

[0072] The two second plane mirrors close to the symmetry axis, c2=0, and the equation set of the mirror surface is:

[0073]

[0074]

[0075]

[0076] Wherein: D is the mirror field width; L is 1 / 2 of the battery width; h is the photovoltaic cell placement height; φ is the inclination angle of the photovoltaic cell; x2 is the X-axis coordinate value of the second plane mirror close to the axisymmetric endpoint; δ2 is the inclination angle of the second plane mirror; γ2 is the angle between the light reflected by the second plane mirror away from the close-to-axisymmetric-end and the X-axis. a 2 is the width of the second plane mirror.

[0077] In the embodiment, the support structure adopts a modular adjustable fixing structure. The support structure is coated with multiple layers of anticorrosive coating. The support structure should have sufficient structural strength and fatigue resistance to bear the dead weight of the PV assembly and the thermal deformation stress during operation, and at the same time, compensate for the small positioning errors in the installation process through the fine adjustment mechanism, finally realize the accurate matching of the PV assembly and the CCLFR condenser in the three-dimensional space, and provide the basis for the efficient and stable operation of the PV system.

[0078] The support structure adopts a high-strength alloy material and a truss frame design, which can effectively disperse the load and ensure that the deformation is controlled within a small range during long-term operation. The surface of the support structure is treated with multiple layers of anticorrosive coating, combined with sealed coating treatment, which can resist the erosion of complex environments such as high temperature, high humidity, salt spray, etc. And the support structure relies on the design of standardized interfaces, and the components of the support structure can be quickly assembled through prefabricated connectors, greatly shortening the on-site installation period.

[0079] The arrangement height of the two groups of solar PV photovoltaic assemblies is determined comprehensively in combination with the overall optical design parameters of the PV system, the ground environmental interference factors and the operation and maintenance convenience. From the perspective of optical efficiency, this height should ensure that the PV photovoltaic assembly can adapt and maximize the capture of the concentrated light spot of the CCLFR mirror array, and avoid energy loss caused by ground obstacles; at the same time, the local meteorological conditions such as snow thickness and precipitation runoff should be considered, and the height of the receiver bottom should be set above a reasonable threshold to reduce the direct damage of extreme weather to the equipment and the impact on the function of the CCLFR mirror surface. In spatial distribution, the two groups of PV assemblies need to strictly follow the principle of left-right symmetry of the central axis of the CCLFR system. This symmetrical layout is based on the optical geometric characteristics of the condensing system and can ensure that the two PV assemblies obtain approximately equal light energy distribution, avoiding the problem of thermal load imbalance caused by positional deviation. The PV assembly is a single-crystal silicon PV cell.

[0080] The arrangement of the two PV assemblies can optimize the structure of the condenser of the PV system. By symmetrically arranging the PV assemblies on both sides of the mirror field, the mirrors in the mirror field can be designed to strategically reflect light onto the predetermined PV assemblies. Through the design of the height of the PV assembly, the optical loss caused by air scattering and absorption can be reduced to a certain extent, and the optical efficiency of the entire PV system is improved.

[0081] The structural design of the CCLFR concentrator of the embodiment of the present application is innovative, which fundamentally solves the shadow and blocking problems existing in the traditional LFR concentrator through the alternative arrangement of the mirror units and the specific calculation method of the mirror angles and lengths provided. The advantages of this method are that, by using the CCLFR concentrator design method of the present application, the inclination angle, position and length of each mirror are optimized through optical geometric calculation, on the one hand, the distance between two adjacent mirrors is minimized to reduce light leakage and improve light field utilization rate; on the other hand, the length and relative position of different mirrors can be optimized and balanced to eliminate the shadow and blocking effect existing in the traditional LFR concentrator. Theoretical calculation shows that, under the condition of a mirror field width of 2000.0 mm and a PV module height of 1000.0 mm, the CCLFR concentrator has a total of 44 mirrors, a geometric concentration ratio of 16.0, and a light field utilization rate of up to 0.987, i.e. 98.7% of the incident light can be effectively intercepted, which is much higher than that of the traditional LFR concentrator.

[0082] The CCLFR concentrating PV system can realize the superposition of parallel light on the surface of the PV module and form a converging light band with high uniformity due to the special mirror arrangement design of the CCLFR concentrator, the design of the relative position of the CCLFR concentrator and the PV module, and the symmetrical arrangement of the PV module. Compared with the existing published concentrating PV systems based on the traditional LFR concentrator and the concentrating PV systems based on the trough concentrator, the CCLFR concentrating PV system can make the PV cell surface have a more uniform concentrating effect under the same mirror field width or the same geometric concentration ratio, thereby reducing the maximum temperature value of the PV cell, improving the photoelectric conversion efficiency of the PV cell, and reducing the possibility of local overheating of the PV cell.

[0083] The design method of the CCLFR concentrating PV system provides the calculation formula and calculation process required for the optimization design of the CCLFR concentrator and the design of the PV system based on the CCLFR concentrator. The calculation formula is a new formula derived from the structural characteristics and optical geometric relationship of the CCLFR concentrator, and the special innovation lies in the two formula groups for calculating tan i ≥3 gamma i , tan gamma i-1 , tan gamma i-2 and the formula and determination c i of tan c i-1The related condition of the value is described, which is a judging condition for making the formula group closed and solvable, and is not given in the previous LFR concentrator design scheme. Compared with the existing public traditional LFR concentrator technology and the PV power generation system based on LFR concentration, the calculation formula and calculation process provided by the CCLFR concentrating PV system design method are simple and easy to understand, and the optimization solution of all mirror structure parameters in the CCLFR concentrator mirror field can be automatically realized under the condition of pre-determining the overall width of the concentrator, the height and the width of the PV component, so that the light field utilization rate of the concentrator reaches the maximum, and the effectiveness and high uniformity of the PV component surface light band are ensured. For the CCLFR concentrating PV system with any CCLFR mirror field width, PV component installation height and PV component width, the CCLFR concentrating PV system design method can calculate the detailed structure parameters of all mirrors in the CCLFR concentrator used for the PV system. Further, for any concentrating solar PV system or concentrating solar thermal system that wants to use the CCLFR concentrator for concentration utilization, the overall structure parameters of the CCLFR concentrator and the system can be calculated and optimized by means of the CCLFR concentrating PV system design method, that is, the CCLFR concentrating PV system design method has good universality.

[0084] In summary, through the mutual influence of the above-mentioned multiple effects, the CCLFR concentrator and the double PV component are combined for the first time to realize the design of a concentrating PV system with high light concentration uniformity and high light field utilization rate. By proposing an optimization design method for the CCLFR concentrator, the shadow and shading problem of the traditional LFR concentrator is avoided. The light concentration uniformity and light field utilization rate of the PV component surface of the CCLFR concentrating PV system proposed by the application are effectively improved compared with the PV system based on the traditional LFR concentrator, and the light concentration uniformity, photoelectric conversion efficiency and avoidance of local overheating of the PV cell are also more advantageous compared with the traditional trough-type concentrating PV system. The CCLFR concentrating PV system proposed by the application provides an expandable technical path for efficient utilization of solar energy, and its modular design allows the power generation capacity to be linearly increased by increasing the number of mirror units, and the light concentration uniformity does not decrease significantly with the increase in scale, so it has adjustable scale and can be applied to small, medium and large concentrating PV power generation occasions. At the same time, the CCLFR concentrating PV system uses a large number of plane mirrors, so the cost is relatively low. Compared with the dish-type concentrator and the trough-type concentrator, the cost of the CCLFR concentrator can be reduced by more than 50%, and the installation and maintenance difficulty is greatly reduced. Therefore, the CCLFR concentrating PV system proposed by the application has certain engineering application potential.

[0085] In one or more embodiments, a power generation device includes the above-mentioned CCLFR concentrating solar photovoltaic system.

[0086] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A CCLFR concentrated solar photovoltaic system, characterized in that, include: From bottom to top: CCLFR concentrator, support structure, and symmetrical PV modules; The CCLFR concentrator has an axisymmetric structure and is a concentrating mirror field composed of multiple plane mirrors arranged alternately; each plane mirror is used to reflect the incident light onto the surface of the corresponding PV module. The arrangement of each planar reflector is related to the width of the battery, the height of the photovoltaic cell, the tilt angle of the photovoltaic cell, the tilt angle of the mirror, the X-axis coordinate value of the mirror endpoint, the angle between the reflected light from the mirror endpoint and the X-axis, the width of the mirror, the width of the mirror field, and the lateral distance between two adjacent mirrors.

2. The CCLFR concentrated solar photovoltaic system as described in claim 1, characterized in that, For the i-th plane mirror closest to both sides of the axis of symmetry, when i ≥ 3, if i is an odd number, then: Among them, if ,and Then the first i The mirror and the first i -1 lateral distance between mirrors c i =0; L is half the width of the battery; h is the placement height of the photovoltaic cell; φ is the tilt angle of the photovoltaic cell; x i For the first i The coordinates of the starting point X of each plane mirror; δ i For the first i An angle of inclination for a plane mirror; γ i For the first i The angle between the reflected ray from the endpoint where the plane mirror intersects the X-axis and the X-axis; a i For the first i The width of a plane mirror.

3. The CCLFR concentrated solar photovoltaic system as described in claim 1, characterized in that, For the i-th plane mirror closest to both sides of the axis of symmetry, when i ≥ 3, if i is an odd number, then: ； ； ； Among them, the i The mirror and the first i -1 lateral distance between mirrors c i Not 0; L is half the width of the battery; h is the placement height of the photovoltaic cell; φ is the tilt angle of the photovoltaic cell; x i For the first i The coordinates of the starting point X of each plane mirror; δ i For the first i An angle of inclination for a plane mirror; γ i For the first i The angle between the reflected ray from the endpoint where the plane mirror intersects the X-axis and the X-axis; a i For the first i The width of a plane mirror.

4. The CCLFR concentrated solar photovoltaic system as described in claim 1, characterized in that, For the i-th plane mirror closest to both sides of the axis of symmetry, when i ≥ 3, if i is an even number, then: Among them, for the formula ,when and When both are not true at the same time, c i-1 That is, 0; L is 1 / 2 of the battery width; h is the placement height of the photovoltaic cell; φ is the tilt angle of the photovoltaic cell; x i For the first i The coordinates of the starting point X of each plane mirror; δ i For the first i An angle of inclination for a plane mirror; γ i For the first i The angle between the reflected ray from the endpoint where the plane mirror intersects the X-axis and the X-axis; a i For the first i The width of a plane mirror.

5. The CCLFR concentrated solar photovoltaic system as described in claim 1, characterized in that, The calculation equations for the two first plane mirrors located near the axis of symmetry are as follows: ； ； ； ； Where L is half the width of the battery; h is the placement height of the photovoltaic cell; φ is the tilt angle of the photovoltaic cell; x1 is the X-axis coordinate value of the first plane mirror near the axisymmetric end; δ1 is the tilt angle of the first plane mirror; γ1 is the angle between the reflected light from the first plane mirror near the axisymmetric end and the X-axis. a 1 represents the width of the first planar mirror.

6. The CCLFR concentrated solar photovoltaic system as described in claim 1, characterized in that, For the two second plane mirrors located near the axis of symmetry, c2=0, the system of equations for the mirror surfaces is as follows: Where: D is the mirror field width; L is 1 / 2 of the battery width; h is the placement height of the photovoltaic cell; φ is the tilt angle of the photovoltaic cell; x2 is the X-axis coordinate value of the second plane mirror near the axisymmetric end; δ2 is the tilt angle of the second plane mirror; γ2 is the angle between the reflected light from the second plane mirror away from the axisymmetric end and the X-axis; a 2 represents the width of the second planar mirror.

7. The CCLFR concentrated solar photovoltaic system as described in claim 1, characterized in that, The support structure adopts a modular adjustable fixed structure.

8. The CCLFR concentrated solar photovoltaic system as described in claim 1, characterized in that, The supporting structure is covered with multiple layers of anti-corrosion coating.

9. The CCLFR concentrated solar photovoltaic system as described in claim 1, characterized in that, The PV module is a monocrystalline silicon PV cell.

10. A power generation device, characterized in that, Includes the CCLFR concentrated solar photovoltaic system as described in any one of claims 1-9.

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