WO2018170936A1 - 一种双面发电的平单轴跟踪光伏支架 - Google Patents

一种双面发电的平单轴跟踪光伏支架 Download PDF

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Publication number
WO2018170936A1
WO2018170936A1 PCT/CN2017/078738 CN2017078738W WO2018170936A1 WO 2018170936 A1 WO2018170936 A1 WO 2018170936A1 CN 2017078738 W CN2017078738 W CN 2017078738W WO 2018170936 A1 WO2018170936 A1 WO 2018170936A1
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WIPO (PCT)
Prior art keywords
double
reflector
sided
torque tube
bracket
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PCT/CN2017/078738
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English (en)
French (fr)
Inventor
何春涛
梁中堂
许利学
石其运
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杭州品联科技有限公司
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Publication of WO2018170936A1 publication Critical patent/WO2018170936A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/10—Arrangement of stationary mountings or supports for solar heat collector modules extending in directions away from a supporting surface
    • F24S25/12—Arrangement of stationary mountings or supports for solar heat collector modules extending in directions away from a supporting surface using posts in combination with upper profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
    • F24S30/425—Horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/20—Optical components
    • H02S40/22—Light-reflecting or light-concentrating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F24S20/25—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants using direct solar radiation in combination with concentrated radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S2025/01—Special support components; Methods of use
    • F24S2025/013—Stackable support elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S2030/10—Special components
    • F24S2030/11—Driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S2030/10—Special components
    • F24S2030/11—Driving means
    • F24S2030/115—Linear actuators, e.g. pneumatic cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/77—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with flat reflective plates
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking
    • 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

Definitions

  • the utility model relates to a tracking bracket of a photovoltaic module, in particular to a flat single-axis tracking photovoltaic bracket for double-sided power generation, belonging to the technical field of photovoltaic component installation.
  • the double-sided component can absorb solar energy through its front and back sides to generate electric energy.
  • the double-sided side increases the power generation capability of the back surface, so that the double-sided component can improve the power generation capability of the ordinary component, but the sun on the back side of the double-sided component cannot be effective. Arrival, resulting in the power generation capacity of the double-sided components cannot be maximized.
  • the utility model provides a flat single-axis tracking photovoltaic bracket for double-sided power generation, which effectively improves the illumination intensity of the back surface of the double-sided component, improves the photoelectric conversion efficiency of the double-glass component, and ensures stable installation. Sex and convenience.
  • a double-sided power generation flat single-axis tracking photovoltaic bracket for mounting a double-sided photovoltaic module (1) having a sun-absorbing side (11) and a back-side light-absorbing surface (12), comprising: a column (2) and a column
  • the upper torque tube (3), the torque tube (3) is rotatable about the column under the action of the driving device (4), and a plurality of sets of beams (5) are arranged along the length direction of the torque tube (3), each group
  • a double-sided photovoltaic module (1) is disposed on the beam, characterized in that: the torque tube (3) is provided with a reflector bracket (6), and the reflector bracket is symmetrically disposed on both sides of the torque tube (3)
  • a reflector (7) is disposed on the reflector bracket, and the angle between the plane where the reflector (7) is located and the plane of the double-sided photovoltaic module (2) is an acute angle, and the inner edge of the reflector does not exceed the double-sided photovoltaic The outer edge of the component (2).
  • the utility model provides a double-sided photovoltaic component and a reflector on the torque tube, and the torque tube can be rotated around the column under the action of the driving device, so that the photovoltaic component and the reflector can track the sun light synchronously, and ensure the sun is ensured. Light is reflected to the back of the double-sided PV module, increasing the amount of power generated on the back of the double-sided PV module.
  • the reflector bracket (6) has a "W" shape as a whole, and the reflector (7) is disposed on two outer sides (61) thereof.
  • the reflector can be symmetrically disposed on the torque tube, that is, on both sides of the photovoltaic module, to better increase the illumination of the back of the photovoltaic module; the structure is simple and the strength is good.
  • the reflector bracket (6) comprises a bracket body (61) and two outer sides (61) connected to the bracket body (61), and the bracket body (61) is fixedly connected to the torque tube (3)
  • the two outer sides (61) are rotatably coupled to the bracket body (61).
  • the main body of the bracket rotates with the torque tube to drive the entire reflector bracket and the reflector to rotate, so that the reflector can track the sunlight.
  • the two outer sides are rotatably connected to the bracket body, so that the two outer sides can be adjusted.
  • the angle makes the reflector have the best angle of reflection.
  • the outermost reflected light of the reflector (7) is located at the outer end of the back side light absorption surface (12) of the double-sided photovoltaic module, and the innermost reflected light of the reflector (7) is located on the back side of the double-sided photovoltaic module.
  • the inner end of (12). By adjusting the angle of the reflector, The outermost reflected light of the reflector is located at the outer end of the back side of the double-sided photovoltaic module, and the innermost reflected light of the reflector is located at the inner side of the back side of the double-sided photovoltaic module, so that a light is emitted on one side of the torque tube.
  • the plate is responsible for the reflection of the back side of the double-sided solar component on the side, so that the efficiency of the reflection is maximized, and at the same time, the illumination on the back of the component is substantially uniform.
  • the angle ⁇ between the plane in which the reflector (7) is located and the plane in which the double-sided photovoltaic module (2) is located is 5° to 45°.
  • the setting of the angle can balance the area of the reflector and the efficiency of reflection.
  • the driving device (4) is a servo motor, a cylinder or an oil cylinder, and the torque tube (3) is rotated by its power output end.
  • the material is convenient to take, the control is convenient, and the effect is good.
  • FIG. 2 is a schematic diagram of illumination and reflection of solar light on a photovoltaic module mounted by the present invention
  • Figure 3 is a right side view of the present invention.
  • Figure 5 is a perspective view of the present invention.
  • 1 is a double-sided photovoltaic module
  • 11 is a sun-absorbing surface
  • 12 is a back-side light-absorbing surface
  • 2 is a column
  • 3 is a torque tube
  • 4 is a driving device
  • 5 is a beam
  • 6 is a reflector bracket.
  • 61 is the main body of the bracket
  • 62 is the outer side
  • 7 is the reflector.
  • the double-sided power generation flat-axis tracking photovoltaic bracket of the utility model is used for the double-sided photovoltaic module 1, and the double-sided photovoltaic module 1 has a sun-absorbing surface 11 and a back-side light-absorbing surface 12, and the utility model
  • the new type includes: a column 2 and a torque tube 3 disposed on the column.
  • the torque tube 3 can be rotated around the column by the driving device 4.
  • the column is disposed on the ground, and a torque tube is arranged on the pair of columns. 3.
  • a plurality of sets of beams 5 are arranged along the length of the torque tube 3, and a double-sided photovoltaic module 1 is disposed on each set of beams.
  • Rotation of the torque tube 3 about the column means that the torque tube rotates around the column in the length direction.
  • the number of columns and the number of torque tubes are not limited to those shown in the drawings.
  • a reflector bracket 6 is disposed on the torque tube 3, and the reflector brackets are symmetrically disposed on both sides of the torque tube 3, and a reflector 7 is disposed on the reflector bracket, and the plane where the reflector 7 is located and the double-sided photovoltaic module 2 are located
  • the angle ⁇ of the plane is an acute angle, and the inner edge of the reflector does not exceed the outer edge of the double-sided photovoltaic module 2.
  • the side of the double-sided photovoltaic module and the reflector adjacent to the torque tube is defined as the inner side, and the side corresponding to the inner side is the outer side.
  • the reflector bracket 6 has a "W" shape as a whole, and the reflector bracket 6 includes a bracket body 61 and two outer sides 62 connected to the bracket body 61.
  • the bracket body 61 is fixedly connected to the torque.
  • the two outer sides 62 are rotatably coupled to the bracket body 61, and the reflector 7 is disposed on its two outer sides 61. Therefore, when the torque tube 3 is rotated by the driving device 4, the bracket main body 61 rotates with the torque tube 3, and the two outer side edges 62 and the reflecting plate 7 provided on the outer side are rotated. Thereby, the reflector 7 tracks the sun's rays in synchronization with the double-sided photovoltaic module.
  • the two outer sides are rotatably connected to the main body of the bracket, so that the angles of the two outer sides can be adjusted. Make the reflector have the best angle of reflection.
  • the outer surface of the reflector 7 is made by designing the curvature of the reflecting surface of the reflector 7, the length of the reflector, and the angle between the reflector and the double-sided photovoltaic module.
  • the reflected light is located at the outer end of the back side light absorbing surface 12 of the double-sided photovoltaic module, and the innermost reflected light of the reflecting plate 7 is located at the inner side of the back side light absorbing surface 12 of the double-sided photovoltaic module.
  • the utilization efficiency of reflected light is maximized.
  • the reflector can be a spherical surface or a mirror surface.
  • the reflector 7 is a mirror surface, and the double-sided photovoltaic module 1 is symmetrically disposed on both sides of the torque tube 3 along the length direction of the torque tube so as to be located on one side of the torque tube.
  • the reflector is responsible for the reflection of the photovoltaic module on the side, so that the efficiency of the reflection is maximized, and at the same time, the illumination on the back of the assembly is substantially uniform.
  • the direction indicated by the arrow is the direction of illumination of the sunlight; since the bracket in the present invention is a tracking bracket, the tracking type photovoltaic bracket can rotate the assembly as the position of the sun changes, so that the sunlight can always illuminate the assembly vertically.
  • this patent adds a reflective device to the tracking type photovoltaic support. The reflective device and the component simultaneously track the position of the sun and reflect the light to the back of the component to increase the amount of power generated by the back side of the double-sided component.
  • the angle ⁇ between the plane in which the reflector 7 is located and the plane in which the double-sided photovoltaic module 2 is located is 25° to 35°.
  • the setting of the angle can balance the area of the reflector and the efficiency of reflection.
  • the driving device 4 may be a servo motor, a cylinder or a cylinder, and the torque tube 3 is pushed to rotate by its power output end.
  • the driving device is driven to rotate the bracket on which the photovoltaic module is mounted, so as to track the sunlight, which is a prior art of the tracking bracket, and will not be described herein.
  • the double-sided photovoltaic module 1 and the reflector 7 simultaneously track the sunlight, so that the front and back sides of the double-sided photovoltaic module have better illumination, thereby improving the power generation efficiency of the component; the reflective device is installed obliquely to ensure that the sunlight is sufficiently reflected to the double
  • the back side light absorption surface 12 of the photovoltaic module 1 increases the power generation amount of the double-sided photovoltaic module 1, and uses less double-sided photovoltaic module 1 Achieve more power generation, improve the power generation efficiency of the components; at the same time, it does not increase the installation height of the double-sided photovoltaic module 1; the space utilization rate is high, and the land occupation is small.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
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Abstract

一种双面发电的平单轴跟踪光伏支架，用于安装具有朝阳吸光面（11）和背阳吸光面（12）的双面光伏组件（1），包括：立柱（2）以及设置在立柱（2）上的扭矩管（3），扭矩管（3）可在驱动装置（4）的作用下绕立柱（2）转动，沿扭矩管（3）的长度方向设置有若干组横梁（5），每一组横梁（5）上设置双面光伏组件（1），其特征在于：在扭矩管（3）上设置有反光板支架（6），反光板支架（6）对称地设置在扭矩管（3）的两侧，在反光板支架（6）上设置有反光板（7），反光板（7）所在的平面与双面光伏组件（1）所在平面的夹角α为锐角，且反光板（7）的内侧边缘不超过双面光伏组件（1）的外侧边缘。该光伏支架能有效增加双面光伏组件（1）背面的光照量，提高双面光伏组件（1）的光电转换效率。

Description

一种双面发电的平单轴跟踪光伏支架 技术领域
本实用新型涉及一种光伏组件的跟踪支架，尤其涉及一种双面发电的平单轴跟踪光伏支架，属于光伏组件安装技术领域。
背景技术
双面组件能够通过其正反两面吸收太阳能产生电能，相对于普通组件，双面增加了背面发电能力，使得双面组件比普通的组件发电能力得到提高，但是双面组件的背阳面阳光无法有效到达，导致双面组件的发电能力无法最大化。
双面组件主要通过漫反射将阳光反射到双面组件的背面，背面阳光吸收少，导致双面组件的发电量减少。为了增加双玻组件背面的光照强度，人们进行了各种各样的尝试。如：在申请号为：“201611023858.5”，名称为《双面玻璃太阳能电池板跟踪支架》的中国发明专利申请文件中，公开了一种双面玻璃太阳能电池板跟踪支架，通过在光伏组件的下方设置反光板来增加双玻组件背面的光照，在一定程度上提高了双玻组件的光电转换效率。但是，其反光板与双玻组件平行地设置，且反光板位于双玻组件的正下方。反光板部分地被遮挡，从而只有一部分光经反光板反射到双玻组件的背面，增加的光照有限；此外，其在安装时，双面玻璃电池板与反光板之间需间隔较大的距离才能实现一定太阳光的反射，因而增大了空间的占用，需增加双面玻璃电池板的安装高度，进而降低了双面玻璃电池板安装的稳定性。
实用新型内容
本实用新型为了克服现有技术的不足，提供一种双面发电的平单轴跟踪光伏支架，有效地提高双面组件背阳面的光照强度，提高双玻组件的光电转换效率；同时保证安装稳定性和便捷性。
为了实现上述目的，本实用新型采用以下技术方案：
一种双面发电的平单轴跟踪光伏支架，用于安装具有朝阳吸光面(11)和背阳吸光面(12)的双面光伏组件(1)，包括：立柱(2)以及设置在立柱上的扭矩管(3)，扭矩管(3)可在驱动装置(4)的作用下绕立柱转动，沿所述扭矩管(3)的长度方向设置有若干组横梁(5)，每一组横梁上设置双面光伏组件(1)，其特征在于：在所述扭矩管(3)上设置有反光板支架(6)，所述反光板支架对称地设置在扭矩管(3)的两侧，在反光板支架上设置有反光板(7)，反光板(7)所在的平面与双面光伏组件(2)所在平面的夹角α为锐角，且反光板的内侧边缘不超过双面光伏组件(2)的外侧边缘。
本实用新型通过将双面光伏组件以及反光板均设置在扭矩管上，扭矩管在扭矩管可在驱动装置的作用下绕立柱转动，实现光伏组件与反光板同步地跟踪太阳光线，保证将太阳光反射到双面光伏组件的背面，增加双面光伏组件背面的发电量。
进一步地，所述反光板支架(6)整体上呈“W”形，所述反光板(7)设置在其两条外侧边(61)上。使反光板可以对称地设置在扭矩管，也即光伏组件的两侧，更好地增加光伏组件背面的光照；结构简单，强度好。
进一步地，所述反光板支架(6)包括支架主体(61)以及连接在支架主体(61)上的两条外侧边(61)，支架主体(61)固定连接在扭矩管(3)上，两条外侧边(61)可转动地连接在支架主体(61)上。支架主体随扭矩管转动，带动整个反光板支架及反光板转动，实现反光板跟踪太阳光线的目的；另一方面，两条外侧边可转动地连接在支架主体上，便于调整两外侧边的角度，使反光板具有最佳的反光角度。
进一步地，所述反光板(7)最外侧的反射光位于双面光伏组件背阳吸光面(12)的外侧端，反光板(7)最内侧的反射光位于双面光伏组件背阳吸光面(12)的内侧端。通过调整反光板的角度， 反光板最外侧的反射光位于双面光伏组件背阳吸光面的外侧端，反光板最内侧的反射光位于双面光伏组件背阳吸光面的内侧端，这样，位于扭矩管一侧的一块发光板，负责该侧双面太阳组件背面的反光，使反光的效率得到最大化的利用，同时，使组件背面的光照基本均匀。
进一步地，反光板(7)所在的平面与双面光伏组件(2)所在平面的夹角α为5°至45°。该角度的设置，可兼顾反光板的面积与反光的效率。
为了获得更好的实施效果，所述反光板(7)所在的平面与双面光伏组件(2)所在平面的夹角α为25°至35°。该角度的设置，可兼顾反光板的面积与反光的效率。
进一步地，所述驱动装置(4)为伺服电机、气缸或油缸，通过其动力输出端推动所述扭矩管(3)转动。取材方便，控制方便，效果好。
综上所述，本实用新型的双面发电的平单轴跟踪光伏支架能有效将太阳光反射到组件的背阳吸光面，提高组件背面的光电转换效率，从而提高整个光伏组件的光电转换效率；同时，不增加双面组件的安装高度，保证双面组件安装的稳定性。
附图说明
图1为本实用新型的主视图；
图2为太阳光线在采用本实用新型安装的光伏组件上的照射及反射示意图；
图3为本实用新型的右视图；
图4为本实用新型的俯视图；
图5为本实用新型的立体图。
图中，1为双面光伏组件，11为朝阳吸光面，12为背阳吸光面，2为立柱，3为扭矩管，4为驱动装置，5为横梁，6为反光板支架， 61为支架主体，62为外侧边，7为反光板。
具体实施方式
为了使本技术领域的人员更好的理解本实用新型方案，下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整的描述。
如图1-5所示，本实用新型的双面发电的平单轴跟踪光伏支架，用于双面光伏组件1，双面光伏组件1具有朝阳吸光面11和背阳吸光面12，本实用新型包括：立柱2以及设置在立柱上的扭矩管3，扭矩管3可在驱动装置4的作用下绕立柱转动，一般来讲，立柱呈对地设置，在一对立柱上设置一根扭矩管3，沿所述扭矩管3的长度方向设置有若干组横梁5，每一组横梁上设置双面光伏组件1。扭矩管3绕立柱转动是指扭矩管在长度方向上绕立柱转动。如图3所示，但是立柱的数量和扭矩管的数量不限于图中所示。
在扭矩管3上设置有反光板支架6，反光板支架对称地设置在扭矩管3的两侧，在反光板支架上设置有反光板7，反光板7所在的平面与双面光伏组件2所在平面的夹角α为锐角，且反光板的内侧边缘不超过双面光伏组件2的外侧边缘。在此，定义双面光伏组件以及反光板靠近扭矩管的一侧为内侧，与内侧对应的一侧为外侧。
作为一种具体的实施方式，反光板支架6整体上呈“W”形，反光板支架6包括支架主体61以及连接在支架主体61上的两条外侧边62，支架主体61固定连接在扭矩管3上，两条外侧边62可转动地连接在支架主体61上，反光板7设置在其两条外侧边61上。从而，当扭矩管3在驱动装置4的作用下转动时，支架主体61随扭矩管3转动，带动两条外侧边62以及设置于外侧边上的反光板7转动。从而使反光板7与双面光伏组件同步地跟踪太阳光线。而两条外侧边可转动地连接在支架主体上，便于调整两外侧边的角度， 使反光板具有最佳的反光角度。
如图2所示，为了获得更好的效率，通过设计反光板7的反光面曲度、反光板的长度，以及，反光板与双面光伏组件之间的夹角，使反光板7最外侧的反射光位于双面光伏组件背阳吸光面12的外侧端，反光板7最内侧的反射光位于双面光伏组件背阳吸光面12的内侧端。使反射光的利用效率达到最高。反光板可以为球面或镜面，在本实施例中，反光板7为反光镜面，双面光伏组件1沿扭矩管的长度方向对称地设置在扭矩管3的两侧，从而位于扭矩管一侧的反光板负责该侧光伏组件的反光，使反光的效率得到最大化的利用，同时，使组件背面的光照基本均匀。图2中，箭头所示方向为阳光的照射方向；由于本实用新型中的支架为跟踪支架，跟踪式光伏支架能够随着太阳位置变化转动组件，使太阳光能够始终保垂直照射组件。本专利通过这一特点，在跟踪式光伏支架上增加反光装置，反光装置与组件同时跟踪太阳位置，并将光反射到组件背面，增加双面组件背面发电量。
在本实施例中，反光板7所在的平面与双面光伏组件2所在平面的夹角α为25°至35°。该角度的设置，可兼顾反光板的面积与反光的效率。
作为一种具体的实施方式，驱动装置4可以为伺服电机、气缸或油缸，通过其动力输出端推动所述扭矩管3转动。通过驱动装置驱动，使安装有光伏组件的支架转动，实现跟踪太阳光线的目的，此为跟踪支架的现有技术，在此不赘述。
本实用新型具备下述优点：
双面光伏组件1和反光板7同步跟踪太阳光线，使双面光伏组件的正面和背面都具有较好的光照，提高组件的发电效率；反光装置倾斜安装，保证能将太阳光充分反射到双面光伏组件1的背阳吸光面12，增加双面光伏组件1的发电量，用较少的双面光伏组件1 实现更多的发电量，提高了组件的发电效率；同时不增加双面光伏组件1的安装高度；空间利用率高，占地少。
显然，所描述的实施例仅仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本实用新型保护的范围。

Claims (7)

  1. 一种双面发电的平单轴跟踪光伏支架，用于安装具有朝阳吸光面(11)和背阳吸光面(12)的双面光伏组件(1)，包括：立柱(2)以及设置在立柱上的扭矩管(3)，扭矩管(3)可在驱动装置(4)的作用下绕立柱转动，沿所述扭矩管(3)的长度方向设置有若干组横梁(5)，每一组横梁上设置双面光伏组件(1)，其特征在于：在所述扭矩管(3)上设置有反光板支架(6)，所述反光板支架对称地设置在扭矩管(3)的两侧，在反光板支架上设置有反光板(7)，反光板(7)所在的平面与双面光伏组件(2)所在平面的夹角α为锐角，且反光板的内侧边缘不超过双面光伏组件(2)的外侧边缘。
  2. 根据权利要求1所述的平单轴跟踪光伏支架，其特征在于：所述反光板支架(6)整体上呈“W”形，所述反光板(7)设置在其两条外侧边(61)上。
  3. 根据权利要求2所述的平单轴跟踪光伏支架，其特征在于：所述反光板支架(6)包括支架主体(61)以及连接在支架主体(61)上的两条外侧边(61)，支架主体(61)固定连接在扭矩管(3)上，两条外侧边(61)可转动地连接在支架主体(61)上。
  4. 根据权利要求2所述的平单轴跟踪光伏支架，其特征在于：所述反光板(7)最外侧的反射光位于双面光伏组件背阳吸光面(12)的外侧端，反光板(7)最内侧的反射光位于双面光伏组件背阳吸光面(12)的内侧端。
  5. 根据权利要求1所述的平单轴跟踪光伏支架，其特征在于：反光板(7)所在的平面与双面光伏组件(2)所在平面的夹角α为5°至45°
  6. 根据权利要求4所述的平单轴跟踪光伏支架，其特征在于：反光板(7)所在的平面与双面光伏组件(2)所在平面的夹角α为25°至35°
  7. 根据权利要求1所述的平单轴跟踪光伏支架，其特征在于：所述驱动装置(4)为伺服电机、气缸或油缸，通过其动力输出端推动所述扭矩管(3)转动。
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