Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Octahedral low-concentration photovoltaic unit body, as well as concentrating photovoltaic assembly and concentrating photovoltaic power generating device consisting of octahedral low-concentration photovoltaic unit body

A concentrating photovoltaic and unit body technology, applied in the field of solar photovoltaic power generation, can solve problems such as unsatisfactory improvement of power generation efficiency of four-sided reflectors, impact on the service life of photovoltaic cells, and limited light concentration ratio, and achieve overheating and its impact Small size, avoiding heat dissipation and cooling conditions, and reducing investment costs

Inactive Publication Date: 2017-01-04
唐荣芬
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three implementation methods given above all use the reflection method to concentrate sunlight so that the light intensity reaching the photovoltaic cell is one to several times the intensity of sunlight. The advantage is that when the incident sunlight is parallel light, Since the reflection effect of the plane mirror is relatively uniform, the light intensity incident on the photovoltaic cell is also relatively uniform; however, the disadvantage of the reflection method is the limited light concentration ratio
It can be proved by mathematical theoretical derivation that the above-mentioned concentration power generation device reported by ZSW in Germany, when the concentration ratio achieved by the double-sided V-shaped reflector is used (that is, under the condition of vertical light irradiation, the photovoltaic cell passes through direct radiation and reflection (or refraction) The ratio of the total light intensity received by the superimposed radiation to the light intensity received by the photovoltaic cell through direct radiation) The theoretical limit (when the inclination angle between the reflector and the photovoltaic cell is greater than and close to 90°, and the length of the reflector is infinite) is 3 (actual In the application, when the inclination angle between the reflective plate and the photovoltaic cell is 120°, when the effective length of the reflective plate is equal to the length of the photovoltaic cell, the concentration ratio is 2); the concentrator disclosed in the U.S. patent with the patent No. The theoretical limit of the light ratio is 5 (in practical applications, when the inclination angle between the reflective plate and the photovoltaic cell is 120°, when the effective length of the reflective plate is equal to the length of the photovoltaic cell, the concentration ratio is 3); the patent No. ZL200510200596. For battery power generation devices, since the reflected light from two sets of oblique sides cannot evenly cover the photovoltaic cells on the bottom surface, the power generation efficiency improvement effect of using octahedral light funnel reflectors is not ideal compared with the use of four-sided reflectors, and the uneven light intensity will affect the photovoltaic cells. In addition, the octagonal entrance window has a large waste of lighting area in the array combination

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Octahedral low-concentration photovoltaic unit body, as well as concentrating photovoltaic assembly and concentrating photovoltaic power generating device consisting of octahedral low-concentration photovoltaic unit body
  • Octahedral low-concentration photovoltaic unit body, as well as concentrating photovoltaic assembly and concentrating photovoltaic power generating device consisting of octahedral low-concentration photovoltaic unit body
  • Octahedral low-concentration photovoltaic unit body, as well as concentrating photovoltaic assembly and concentrating photovoltaic power generating device consisting of octahedral low-concentration photovoltaic unit body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment discloses an eight-sided low-power concentrating photovoltaic unit body, such as figure 1 and figure 2 As shown, it includes a square photovoltaic cell 2 and four front and side reflectors 3 and four oblique side reflectors 4 arranged around the photovoltaic cell. The four front and side reflectors 3 are opposite to the four sides of the photovoltaic cell 2, and the four oblique The side reflectors 4 are respectively opposite to the four corners of the photovoltaic cell 2 to form a front side reflector 3 and an oblique side reflector 4 alternately arranged. The projections of the 8 reflector panels on the plane where the photovoltaic cells are located are distributed together with the photovoltaic cells in the Jiugong grid with the photovoltaic cells as the center. The projection of the front and side reflector 3 is located in the square corresponding to the four sides of the central square of Jiugongge (hereinafter referred to as the square of Jiugongge)...

Embodiment 2

[0050] This embodiment provides another eight-sided low-power concentrating photovoltaic unit body. The difference from Embodiment 1 is that the photovoltaic cell used in this embodiment is a single crystal cell with a 45° chamfer, see Image 6 As shown, the minimum square side length L covering the monocrystalline cell 3 156mm, the length L after removing the chamfer 4 It is 125mm, and the length of the right side of the chamfered triangle is 15.5mm.

[0051] In this embodiment, in order to save the process and reduce the manufacturing cost, the ineffective parts corresponding to the chamfers of the front side reflector and the oblique side reflector are not cut off.

Embodiment 3

[0053] This embodiment provides another eight-sided low-power concentrating photovoltaic unit body, such as Figure 7 As shown, the difference from embodiment 1 is that the square photovoltaic cell 2 used in this embodiment is composed of 36 photovoltaic cells arranged in a 6×6 matrix, and the obtained photovoltaic cell 2 is composed of photovoltaic glass and EVA film Package with the backplane, the size after packaging is 990mm×990mm, the size of the heat sink 5 installed behind the backplane is 990mm×990mm; the angle α between the plane of the rhombic effective reflective surface and the plane of the photovoltaic cell 2 is set to 115 °, the angle β between the plane of the rectangular effective reflective surface and the plane of the photovoltaic cell 2 is set to 119.66°; the corresponding calculation can be obtained, the size of the rectangular front and side reflector 3 is 1021×990mm, and the front and side reflector 3 The distance between the intersection of the plane and t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an octahedral low-concentration photovoltaic unit body. The octahedral low-concentration photovoltaic unit body comprises a photovoltaic battery which is square or similar to a square, as well as four front side surface light reflecting plates and four inclined side surface light reflecting plates, which are arranged around the photovoltaic battery; each front side surface light reflecting plate contains a rectangular effective light reflecting surface; each inclined side surface light reflecting plate contains a rhombic effective light reflecting surface; each rectangular effective light reflecting surface and each rhombic effective light reflecting surface reflect the incident light which is perpendicular to a plane in which the photovoltaic battery is positioned, and the surface of the photovoltaic battery is just full of the generated reflected light uniformly. The invention further discloses a concentrating photovoltaic assembly and a concentrating photovoltaic power generating device which consist of the octahedral low-concentration photovoltaic unit body. The limit concentration ratio of the octahedral low-concentration photovoltaic unit body disclosed by the invention can reach 9; the radiation received by the photovoltaic battery is uniform; compared with the conventional reflecting type low-concentration technical scheme, the radiation quantity and the electricity generating capacity of the photovoltaic battery in a unit area are greatly improved.

Description

Technical field [0001] The invention belongs to the technical field of solar photovoltaic power generation, and relates to an eight-sided low-power concentrating photovoltaic unit body, and a concentrating photovoltaic component and a photovoltaic power generation device composed of the concentrating photovoltaic unit body. Background technique [0002] With the increasing harm to the environment caused by the development and utilization of traditional fuel energy and the limited availability of energy, the development of renewable clean energy is a common issue facing the world. In the development and utilization of renewable energy, photovoltaic power generation uses photovoltaic cells to convert the light energy received on its surface into electrical energy. It has attracted attention because of its inexhaustible solar energy as an energy source, but ordinary flat panels The relatively high cost per kilowatt-hour of photovoltaic power generation devices restricts the wider pr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02S40/22
CPCY02E10/52H02S40/22
Inventor 都巍唐荣芬
Owner 唐荣芬
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com