Abstract:
A frame structure of a concentrator type solar cell module, with its carrier portion and connection and fixing portion of a frame edge designed into a vertical and stack-up arrangement, thus reducing significantly a thickness of the frame edge, such that upon carrying a concentrator lens array, the proportion of light receiving area is increased, hereby raising the photo-electrical conversion efficiency of the concentrator type solar cell module. Therefore, in this way, in a condition of maintaining a same load mechanical strength, the ineffective light receiving area can be reduced significantly, while raising the photo-electrical conversion efficiency of the solar cell module.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a concentrator type solar cell module, and in particular to a frame structure of a concentrator type solar cell module. 
         [0003]    2. The Prior Arts 
         [0004]    Presently, among the energy regeneration systems, the high concentrated photovoltaic (HCPV) electricity generation system has excellent potential for further development, due to its various advantages of material saving, reduced cost and high efficiency in generating electricity. As such, it is generally considered as ideal to be used in building solar energy power plant, thus it has a promising future in the solar energy industry. 
         [0005]    Refer to  FIG. 1  for a schematic diagram of a concentrator type solar cell module according to the prior art. As shown in  FIG. 1 , the concentrator type solar cell module includes: an upper frame  12 ; a lower frame  13 , four angle columns  15 ; four sideboards  14 ; a concentrator lens  11 , carried and supported on the upper frame  12 ; and a solar cell unit and a heat dissipation module constituting the solar cell components are disposed in an inner space formed and surrounded by the upper frame  12 , the lower frame  13 , the angle columns  15 , and the sideboards  14 . The concentrator lens  11  is capable of concentrating and focusing the sunlight onto solar cell unit in the inner space, thus generating electricity for outputting it to the various equipment as required. Also, a heat dissipation module is provided to dissipate heat generated in the process. As such, through this kind of arrangement mentioned above, the number of solar cell units utilized can be reduced, hereby reducing the cost of equipment required. 
         [0006]    Moreover, refer to  FIG. 2  for a schematic diagram of a frame structure of a concentrator type solar cell module according to the prior art at the same time. As shown in  FIG. 2 , in this frame structure, on the left side of the upper frame  12  is provided with a connection and fixing portion formed by a positioning slot  121  and fixing slot  122 , used for the sideboard  14  to be engaged and positioned into the positioning slots  121  through a positioning portion  141  extended and bent on a side of the sideboard, and it is screwed and fixed into the fixing slot  122  by means of a screw  16 , such that the sideboard  14  is fixed and pressed tightly to the upper frame  12 ; and on the right side of the upper frame  12  is a step-shaped carrier portion  123 , used for the placement of the concentrator lens  11 . Since the connection and fixing portion and the carrier portion  123  are placed in a parallel arrangement, such that on the frame edges of the upper frame  12 , there are quite a few regions that could have no actual functions. In other words, only the sunlight passing through the concentrator lens  11  and entering into the solar cell unit can be used for generating electricity, therefore, the frame edge region seems to be quite a waste, as such, it not only occupies additional space, but it also reduce the overall photo-electric conversion efficiency of the solar cell unit. 
         [0000]    Therefore, presently, the performance and effectiveness of this kind of design is not quite satisfactory. 
         [0007]    In view of the problems and shortcomings of the prior art, the present invention provides a frame structure of a concentrator type solar cell module, so as to solve the afore-mentioned problems of the prior art. 
       SUMMARY OF THE INVENTION 
       [0008]    A major objective of the present invention is to provide a frame structure of a concentrator type solar cell module, wherein, frame edges are designed into a vertical and stack-up arrangement, so as to reduce the area occupied by the frame edges, such that it can not only increase the proportion of light receiving area, but it can also increase the photo-electric conversion efficiency of the solar cell module, hereby resolving the drawbacks and shortcomings of the prior art. 
         [0009]    In order to achieve the above-mentioned objective, the present invention provides a frame structure of a concentrator type solar cell module, it basically is a rectangular body formed by four frame edges, and a sideboard is connected and fixed to each frame edge and is used for carrying the concentrator lens array; each frame edge is provided with a carrier portion and a connection and fixing portion, the connection and fixing portion is used to connect and fix a sideboard, and the carrier portion is used to place and carry the concentrator lens array. Wherein, the carrier portion and the connection and fixing portion are designed into a vertical and stack-up arrangement, so as to reduce the thickness of frame edge and the ineffective light receiving area. 
         [0010]    Since the thickness of frame edge is reduced, therefore, as viewed from the top, the proportion of area occupied by a concentrator lens array is increased, such that the light receiving area is increased, hereby raising the photo-electric conversion efficiency of a solar cell module. 
         [0011]    Further scope of the applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the present invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the present invention will become apparent to those skilled in the art from this detailed description. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0012]    The related drawings in connection with the detailed description of the present invention to be made later are described briefly as follows, in which: 
           [0013]      FIG. 1  is a schematic diagram of a concentrator type solar cell module according to the prior art; 
           [0014]      FIG. 2  is a schematic diagram of a frame structure of a concentrator type solar cell module according to the prior art; 
           [0015]      FIG. 3  is a schematic diagram of a frame structure of a concentrator type solar cell module according to the present invention; 
           [0016]      FIG. 4  is a schematic diagram of a frame structure of a concentrator type solar cell module connecting to a sideboard according to the present invention; 
           [0017]      FIG. 5  is a schematic diagram of a frame structure of a concentrator type solar cell module connecting to a sideboard and a concentrator lens array according to the present invention; and 
           [0018]      FIG. 6  is a schematic diagram of a concentrator type solar cell module according to the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0019]    The purpose, construction, features, functions and advantages of the present invention can be appreciated and understood more thoroughly through the following detailed description with reference to the attached drawings. 
         [0020]    Refer to  FIG. 3  for a schematic diagram of a frame structure of a concentrator type solar cell module according to the present invention, and  FIG. 6  for a schematic diagram of a concentrator type solar cell module according to the present invention. As shown in  FIGS. 3 and 6 , a frame structure of the concentrator type solar cell module includes two frames (an upper frame  21  and a lower frame  22 ), four sideboards  30  (refer to  FIG. 1  at the same time), etc. 
         [0021]    The upper frame  21  and the lower frame  22  are arranged parallel to each other in an upper and lower configuration, and both are composed of four frame edges  211  and  221  to form a rectangle-shaped body. The upper and lower sides of each sideboards  30  are fixed into the corresponding frame edges  211  and  221  of the upper frame  21  and lower frame  22  respectively, thus forming and enclosing an inner space for the disposition and installation of solar cell units  62 ; meanwhile, the upper frame  21  and lower frame  22  are used to carry and support the concentrator lens array  61  and the heat dissipation module  63  with solar cell units  62  disposed thereon. 
         [0022]    In the structure mentioned above, the concentrator lens array  61  can be a Fresnel lens array, made of material of superior optical characteristics, such as light transmission resin of PPMA, PC, or PE, and its structure is a saw-tooth mirror on its lower side having outward incrementing angles, and its texture is designed and created by utilizing light interference, light diffraction, and light receiving angles. In an ordinary design, its focal length is 1 mm˜100 cm, with a light concentration ratio of 2×˜1000×. The solar cell unit  62  can be an III-V Semiconductor solar cell, and it is arranged corresponding to the concentrator lens array  61 , so as to absorb the sunlight  70  concentrated and focused through the concentrator lens array  61 , and then converts the sunlight  70  thus absorbed into electricity for outputting it to the equipment as required. Compared with an ordinary silicon solar cell, the III-V Semiconductor solar cell is able to absorb sunlight of wider spectrum, thus its photo-electric conversion efficiency can be raised significantly. 
         [0023]    Moreover, the heat dissipation module  63  is designed to have superior heat dissipation function and solar cell unit  62  carrying and supporting capabilities, and it can be made of materials of superior heat dissipation as selected from a group consisting of: Ag, Cu, Al, Ni, Au, and the alloys thereof. Therefore, the high temperature generated by the solar cell unit  62  through absorbing the concentrated sunlight as focused by the concentrator lens array  61  can be dissipated into the ambient air, through the heat dissipation module  63  located at the bottom of the solar cell units  62 , such that the solar cell units  62  may operate in a suitable temperature, thus prolonging its service life. 
         [0024]    Subsequently, refer to  FIG. 3 . As shown in  FIG. 3 , the frame edge  211  of the upper frame  21  includes a carrier portion  212  and a connection and fixing portion  213 , such that the carrier portion  212  is formed into a step-shaped structure so as to match the edge of the concentrator lens array  61 . Of course, in case that the design of edges of the concentrator lens array  61  is changed, or different type of concentrator lens array  61  is utilized, then the shape of the carrier portion  212  can be changed accordingly, since it is mainly used to carry the concentrator lens array  61 . The connection and fixing portion  213  includes a positioning slot  214  and a fixing slot  215 , used for positioning and fixing sideboard  30 . The designs of the carrier portion  212  and the connection and fixing portion  213  are different from those of the prior art, such that it is in a vertical and stack-up configuration, so as to reduce its top area to the minimum. 
         [0025]    Refer to  FIG. 4  for a schematic diagram of a frame structure of a concentrator type solar cell module connecting to a sideboard according to the present invention. The positioning position  301  extended and bent at an edge of a sideboard  30  is engaged and positioned into a positioning slot  214  of frame edge  211 , so that the sideboard  30  is pressed tightly and fixed to the frame edge  211  of the upper frame  21 , and a fixing element  40  is used to penetrate the frame edge  211  of the upper frame  21  and sideboard  30 , so as to fix them together tightly. As shown in  FIG. 4 , the fixing element  40  can be of a screw  41  and nut  42  type, and the nut  42  is placed in the fixing slot  215 , such that the screw  41  penetrates the sideboard  30  and gets in touch with the nut  42 , and fixes the sideboard  30  into such a position. Of course, the present invention is not limited to the above mentioned fixing element  40 , other types of the fixing element  40  such as a rivet, pin, fastener can also be utilized. 
         [0026]    Then, refer to  FIG. 5  for a schematic diagram of a frame structure of a concentrator type solar cell module connecting to a sideboard and a concentrator lens array according to the present invention. 
         [0027]    As shown in  FIG. 5 , the concentrator lens array  61  can be disposed on the carrier portion  212  of the frame edge  211  of the upper frame  21 , then in cooperation with the buffer adhesive such as silicone  50  filled in the gap between the carrier portion  212  and the concentrator lens array  61 , hereby achieving the adhering and fixing of the concentrator lens array  61  in a proper position. Therefore, on the whole, the entire frame edge  211  is a hollow structure, such that not only material is saved, but its weight is also reduced. 
         [0028]    Finally, refer to  FIG. 6  for a schematic diagram of a concentrator type solar cell module according to the present invention. As shown in  FIG. 6 , the overall thickness of frame edge  211  is reduced. In other words, the proportion of the entire upper surface area of concentrator lens array  61  is increased. According to a formula of calculating the conversion efficiency, the conversion efficiency is a ratio of the output power to the input power, while the input power is a product of the sunlight intensity times the light receiving area, such that in this way, though actually, the area of concentrator lens array  61  is not changed, yet due to the reduction of area of frame edge  211 , the proportion of the area occupied by concentrator lens array  61  (the effective light receiving area) is increased. Therefore, the overall photo-electric conversion efficiency of the solar cell module is increased. 
         [0029]    The above detailed description of the preferred embodiment is intended to describe more clearly the characteristics and spirit of the present invention. However, the preferred embodiments disclosed above are not intended to be any restrictions to the scope of the present invention. Conversely, its purpose is to include the various changes and equivalent arrangements which are within the scope of the appended claims.