CN107092085A - Staggered contraposition reflector for high-concentration compound solar module - Google Patents

Abstract

The invention provides a staggered alignment reflector for a high-concentration compound solar module, which is divided into a reflector surface A and a reflector surface B, wherein the reflector surface A is provided with staggered alignment holes A, the reflector surface B is provided with staggered alignment holes B, radiator positioning points are respectively arranged on two sides of the alignment holes A and the alignment holes B, the focus of the reflector surface A is positioned in the staggered alignment holes B, and the focus of the reflector surface B is positioned in the staggered alignment holes A. The invention relates to a light-gathering device for a high-concentration compound solar module, which has the advantages that the angle of an incident angle is small, the light efficiency loss is small, the light-gathering device is applied to primary optics of the high-concentration compound solar module, the problem that the primary optics and secondary optics cannot be automatically aligned on the production problem of high-concentration light can be solved, and the problem that the incident angle of the existing high-concentration solar concentrator is large and the light efficiency loss is large.

Description

A staggered alignment mirror for high-power concentrating compound solar modules

technical field

The invention relates to the technical field of high-power concentrating solar energy, in particular to a staggered alignment reflector for high-power concentrating compound solar modules.

Background technique

At present, the concentrators used in high-power concentrating solar energy on the market are: Fresnel mirrors. Due to the specific optical path requirements of Fresnel concentrators, the corresponding alignment problems cannot be improved. The secondary optics cannot be correctly aligned, resulting in low power generation efficiency and not easy to produce, and the optical path of the Fresnel condenser needs expensive positioning production equipment to assist the alignment problem. At the same time, due to the material problem of the Fresnel condenser, its light transmittance is low , poor weather resistance, affecting the economic benefits of the overall cost of electricity.

Contents of the invention

Aiming at the above-mentioned defects and problems of the existing high-magnification concentrating solar concentrating mirror technology, the purpose of the present invention is to provide a staggered alignment reflector with a small incident angle and low loss of light efficiency, which can realize automatic alignment and is cheap. In the high-power concentrating solar module, it can solve the problems that the existing high-power concentrating solar concentrating mirror has a small angle of incidence, small loss of light efficiency, difficult alignment and difficult production.

In order to achieve the above object, the present invention provides the following technical solutions:

A staggered alignment reflector for a high-power concentrating compound solar module. The reflector is divided into a reflector surface A and a reflector surface B. The reflector surface A is provided with a staggered alignment hole A, and the reflector surface B is provided with a staggered alignment hole B. Radiator positioning points are set on both sides of the alignment hole A and the alignment hole B, the focus of the mirror surface A is positioned on the staggered alignment hole B, and the focus of the mirror surface B is positioned on the staggered alignment hole A.

In the above technical solution, the reflective mirror surface A and the reflective mirror surface B are V-shaped.

In the above technical solution, the reflector base material includes polyphenylene sulfide plus graphite powder, polyamide plus graphite powder, polyoxymethylene plus graphite powder.

In the above technical solution, the phenylene sulfide plus graphite powder contains 65%-83% of polyphenylene sulfide, 8%-15% of anti-ultraviolet material, 3%-8% of graphite powder, and 6%-15% of flame-retardant material .

In the above technical solution, the polyamide plus graphite powder contains 55%-65% of polyamide, 8%-15% of anti-ultraviolet material, 15%-20% of graphite powder, and 8%-15% of flame-retardant material.

In the above technical solution, the polyoxymethylene plus graphite powder contains 55%-70% of polyoxymethylene, 10%-20% of anti-ultraviolet material, 5%-10% of graphite powder, and 6%-15% of flame-retardant material.

In the above technical solution, the distance between the positioning point of the radiator and the outside of the reflector is 10-60mm.

In the above technical solution, the shape of the staggered alignment hole A and the staggered alignment hole B is one of circular, elliptical, and square, and its shape varies according to different optical designs.

In the above technical solution, the staggered alignment hole A and the staggered alignment hole B are round holes, and the diameter of the round holes is 1-30 mm.

The present invention is a concentrating device for high-power concentrating compound solar modules, and its reflectors are designed to be staggered, with the advantages of small angle of incidence and small loss of light efficiency. In optics, it can solve the problem that the existing high-magnification concentrating solar concentrator has a large angle of incidence and a large loss of light efficiency, and solves the problem that the primary optics and secondary optics cannot be automatically aligned in the production of high-magnification concentrating.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of the structure of the staggered positioning mirrors of the present invention.

Fig. 2 is a schematic structural view of the staggered positioning mirrors of the present invention.

Fig. 3 is a schematic diagram of the bottom structure of the staggered positioning reflector of the present invention.

Fig. 4 is a schematic top view structure diagram of the staggered positioning reflector of the present invention.

Fig. 5 is a schematic diagram of the conversion ratio between the incident angle and the optical efficiency.

In the figure, 101, staggered alignment hole A, 102, staggered alignment hole B, 201, mirror surface A, 202, mirror surface B, 301, radiator positioning point A, 302, radiator positioning point B, 303, heat dissipation Radiator positioning point A1, 304, radiator positioning point B1.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Figures 1 to 4, the present invention discloses a staggered alignment reflector for high power concentrating compound solar modules, the reflector is divided into reflector A and reflector B, reflector A and reflector B It is V-shaped, and can also be other suitable shapes according to the optical design.

The mirror surface A is provided with a staggered alignment hole A, and the mirror surface B is provided with a staggered alignment hole B, the focus of the mirror surface A is positioned on the staggered alignment hole B, and the focus of the mirror surface B is positioned on the staggered alignment hole A.

The radiator positioning points are radiator positioning point A, radiator positioning point B, radiator positioning point A1, radiator positioning point B1, radiator positioning point A and radiator positioning point A1 are distributed on both sides of the alignment hole A, . The radiator positioning point B and the radiator positioning point B1 are distributed on both sides of the alignment hole B. Radiator positioning point A and radiator positioning point A1, and radiator positioning point B and radiator positioning point B1 are respectively 20 mm away from the outside of the reflector.

The shape of the staggered alignment hole A and the staggered alignment hole B can be circular, elliptical, or square, and its shape varies according to the optical design. The staggered alignment hole A and the staggered alignment hole B of the utility model are circular holes , The diameter of the round hole is 8mm.

The base material of the reflector is a composite material, and the base material of the reflector includes polyphenylene sulfide plus graphite powder, polyamide plus graphite powder, polyoxymethylene plus graphite powder, of which: phenylene sulfide plus graphite powder contains 76% of polyphenylene sulfide , anti-ultraviolet material 11%, graphite powder 4%, flame-retardant material 9%; polyamide plus graphite powder, including polyamide 59%, anti-ultraviolet material 13%, graphite powder 15%, flame-retardant material 13%; polyoxymethylene plus Graphite powder contains 63% of polyoxymethylene, 15% of anti-ultraviolet material, 8% of graphite powder, and 14% of flame-retardant material. The anti-ultraviolet material and flame-retardant material can choose materials with equivalent functions on the market. At present, the process of making reflectors on the market is very mature. The present invention refers to the process of making reflectors in the prior art. The present invention focuses on the staggered alignment design of reflectors. The position of the secondary optics is defined to further achieve a design that does not require alignment under high light-gathering magnifications.

The mirror surface equation relationship of the reflector is:

C=1/R, R is the radius of curvature of the apex of the aspheric surface;

K=1-e, e is eccentricity;

When K=1, it means a curved surface;

When K=-1, it means a paraboloid;

0>K>-1, which means a semi-ellipsoid with elliptical major axis symmetry

K>0, means a semi-ellipsoid symmetrical to the minor axis of the ellipse

K=0, means spherical

D = a constant, 5>D>0

E=a constant, 5>E>0

Z=Z axis, X=X axis, A1～AN=constant

The action principle of the present invention is: when the sun of parallel light shines on the staggered alignment reflector of the high-magnification concentrating compound solar module solar module of the present invention, the reflection focus position of the reflector surface A is at the position of the staggered alignment hole B, and the reflection mirror surface B The position of the reflective focus is at the position of the staggered alignment hole A. At present, the reflector on the high-power concentrating solar concentrator is primary optics, and the position of the focal spot of the primary optics corresponds to the solar receiver. In the secondary optics adopted by the present invention, the staggered alignment holes of the present invention are the solar energy of the secondary optical alignment. Therefore, in the design of the reflector, the present invention can make the primary optics have a smaller incident angle, consistent efficiency, and low cost of electricity compared with the secondary optics.

As shown in Figure 5, with reference to the conversion ratio of the incident angle and optical efficiency in the prior art, the light efficiency is only 52% when the primary optical incident angle is 57 degrees, and the staggered alignment reflector of the present invention has an incident angle of 19 degrees Between -24 degrees, its light efficiency utilization rate can be between 92-95%.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (9)

1. a kind of staggeredly bit-reflected mirror for high power concentrator compound solar module, it is characterised in that：Speculum is divided into Mirror surface A and mirror surface B, mirror surface A set the registration holes A that interlocks, mirror surface B to set interlock registration holes B, registration holes A and registration holes B both sides set radiator anchor point respectively, and the focus of the mirror surface A is positioned at staggeredly registration holes B, reflection Minute surface B focus is positioned at staggeredly registration holes A.

2. a kind of staggeredly bit-reflected mirror for high power concentrator compound solar module according to claim 1, its It is characterised by：The mirror surface A and mirror surface B are V-shaped.

3. a kind of staggeredly bit-reflected mirror for high power concentrator compound solar module according to claim 1 or 2, It is characterized in that：The mirror base material adds graphite powder including polyphenylene sulfide, and polyamide adds graphite powder, and polyformaldehyde adds graphite powder.

4. a kind of staggeredly bit-reflected mirror for high power concentrator compound solar module according to claim 3, its It is characterised by：The diphenyl sulfide adds graphite powder, includes polyphenylene sulfide 65% -83%, ultraviolet ray-resistant material 8% -15%, graphite Powder 3% -8%, fire proofing 6% -15%.

5. a kind of staggeredly bit-reflected mirror for high power concentrator compound solar module according to claim 3, its It is characterised by：The polyamide adds graphite powder, includes polyamide 55% -65%, ultraviolet ray-resistant material 8% -15%, graphite powder 15% -20%, fire proofing 8% -15%.

6. a kind of staggeredly bit-reflected mirror for high power concentrator compound solar module according to claim 3, its It is characterised by：The polyformaldehyde adds graphite powder, includes polyformaldehyde 55% -70%, ultraviolet ray-resistant material 10% -20%, graphite Powder 5% -10%, fire proofing 6% -15%.

7. a kind of staggeredly bit-reflected mirror for high power concentrator compound solar module according to claim 3, its It is characterised by：The radiator anchor point is 10-60mm apart from mirror outer distance.

8. a kind of staggeredly bit-reflected mirror for high power concentrator compound solar module according to claim 7, its It is characterised by：The staggeredly registration holes A and staggeredly registration holes B hole shapes are circular, ellipse, one of square.

9. a kind of staggeredly bit-reflected mirror for high power concentrator compound solar module according to claim 8, its It is characterised by：The staggeredly registration holes A and staggeredly registration holes B are circular hole, and Circularhole diameter size is 1-30mm.