CN101320758A - Concentrating photovoltaic cell module - Google Patents

Abstract

The present invention discloses a concentrating photovoltaic cell module, comprising: a substrate, multiple electrodes, a battery, at least one electrical connector and a frame; wherein the electrodes at least comprise a first electrode and a second electrode, and the first and second electrodes are respectively arranged at predetermined positions in different regions of the substrate to form a first electrode layer and a second electrode layer respectively; the battery has positive and negative electrodes, and is arranged on the first electrode layer, and the second electrode layer and the battery are electrically connected by the electrical connector; the frame is arranged on the first electrode layer and the second electrode layer, and has a cavity, so that the above-mentioned battery is located in the cavity.

Description

Concentrating photovoltaic cell module

technical field

The invention relates to a concentrating photovoltaic battery module, in particular to a battery module which can prevent internal batteries from being disturbed by external environmental factors and thereby improve battery efficiency.

Background technique

In recent years, due to population expansion and the continuous development of industry and commerce, the world's demand for energy is increasing day by day, and because the amount of traditional petrochemical energy that can be collected is becoming more and more limited, and will bring serious environmental problems, therefore, human beings Continuously develop other alternative energy sources, among which the development of solar cells is the main goal to replace the current traditional petrochemical energy sources, and because solar energy is inexhaustible and inexhaustible, it can not only solve the problem of energy consumption problems, and even the serious environmental problems brought about by traditional fossil energy can also be solved together. However, in the photoelectric conversion process of the currently developed solar cells, not all incident spectra can be absorbed by the solar cells and completely converted into currents, and about half of the spectra are too low in energy (less than the energy gap of semiconductors). , does not contribute to the output of the battery, and the other half of the absorbed photons, in addition to the energy required to generate electron-hole pairs, about half of the energy is released in the form of heat, and the highest efficiency of single crystal silicon It is only about 20%, while the efficiency of III-V semiconductors can reach about 40%. However, solar cells need to be placed in an outdoor environment with sufficient light for a long time to obtain the best power generation effect. Harsh external environmental factors will shorten the life and efficiency of solar cells, and the packaging design and material selection of the battery itself are also key factors affecting its service life and reliability.

As shown in FIG. 1 , it is a structural cross-sectional view of a known solar cell module 1, wherein the solar cell 13 is to avoid being polluted by dust in the atmosphere and affecting the performance of the cell by the external environment. Therefore, the known practice mainly uses a polymer 13, etc. The insulating material is used to encapsulate the solar cells 12 arranged on the substrate 11, but in this way of encapsulating the polymer 13, the surface shape of the polymer 13 will affect the incidence and reflection of sunlight, so if the encapsulation is not good, it will It directly affects the performance of the solar cell 12 in absorbing the incident spectrum, and when the polymer 13 is in contact with the air for a long time, there may be a problem of absorbing moisture, which will seriously reduce the effectiveness of insulation and protection. Therefore, the above package Both methods will affect the service life and performance of the battery.

Therefore, in view of the deficiencies of known technologies, the present invention finally creates the "concentrating photovoltaic cell module" of the present invention through careful testing and research and a persistent spirit. The following is a brief description of the invention.

Contents of the invention

Therefore, the main purpose of the present invention is to provide a concentrating photovoltaic cell module, wherein a frame is arranged in the battery module, and an optical element is arranged on the frame, and the cavity in the frame is used for setting the solar cell, and Filling the cavity with transparent glue or other polymer materials with good light penetration and insulation effect to block the contact between the solar cell and external environmental factors can improve the efficiency of the solar cell.

Another object of the present invention is to control the height of the frame to adjust the distance and parallelism parameters between the optical elements disposed on the frame and the solar cells in the cavity of the frame, so as to improve the efficiency of the solar cells.

Therefore, a concentrating photovoltaic cell module disclosed in the present invention includes a substrate, a multi-electrode, a battery, at least one electrical connector, a frame, and an optical element; wherein the electrodes include at least first and second electrodes, and the first and The second electrodes are respectively arranged on predetermined positions in different regions of the substrate to respectively form the first electrode layer and the second electrode layer; the battery has positive and negative electrodes, and is arranged on the first electrode layer, and one of the positive and negative electrodes The electrodes are electrically connected to the first electrode layer, and the second electrode layer and the other electrode of the battery are electrically connected by an electrical connector; in addition, the frame is made of ceramic material and straddled on the substrate, and has a cavity, so that The above-mentioned battery is located in the cavity; the optical element is arranged on the annular groove above the frame, and the cavity formed by the optical element and the frame is filled with dielectric material or not filled with any material.

Wherein the electric polarity of the first electrode layer and the second electrode layer is the same as the electric polarity of the electrode connected respectively, and the electric polarity of the first electrode layer and the second electrode layer is opposite, and the optical element is a transparent protective cover, a polymer, a lens or any one of other optical elements with good light transmittance, and the dielectric material is any one of transparent glue or other polymer materials with good light transmittance and insulating effect.

Description of drawings

FIG. 1 is a cross-sectional view of a known photovoltaic cell module.

Fig. 2 is a three-dimensional exploded view of the first preferred embodiment of the concentrating photovoltaic cell module of the present invention.

Fig. 3 is a three-dimensional assembled view of the first preferred embodiment of the concentrating photovoltaic cell module of the present invention.

Fig. 4 is a schematic plan view of the first preferred embodiment of the concentrating photovoltaic cell module of the present invention.

Fig. 5 is a schematic cross-sectional view of the first preferred embodiment of the concentrating photovoltaic cell module of the present invention.

Fig. 6 is a schematic cross-sectional view of the second preferred embodiment of the concentrating photovoltaic cell module of the present invention.

Fig. 7 is a schematic cross-sectional view of a third preferred embodiment of the concentrating photovoltaic cell module of the present invention.

Fig. 8 is a schematic cross-sectional view of a fourth preferred embodiment of the concentrating photovoltaic cell module of the present invention.

Explanation of reference signs

1 Photovoltaic cell module 11 Substrate

12 battery 13 polymer

2 photovoltaic cell module 21 substrate

22 electrode layer 23 electrode layer

24 batteries 241 electrodes

242 electrodes 25 electrical connectors

26 frames 261 chambers

262 annular groove 27 optical elements

28 Bonding layer 29 Dielectric material

Detailed ways

The technical contents and functions of the present invention will be described in detail in the following detailed description of preferred embodiments with accompanying drawings.

As shown in Figures 2 to 5, it is the first preferred embodiment of the concentrating photovoltaic cell module 2 of the present invention, which mainly includes a substrate 21, a first electrode layer 22, a second electrode layer 23, a solar cell 24, multiple It consists of an electrical connector 25, a frame 26, an optical element 27, a bonding layer 28 and a dielectric material layer 29.

The material of the substrate 21 in this embodiment can be any one of ceramic material (Ceramic), sapphire (Sapphire), AlN, SiC, BeO or other materials, wherein the first The electrode layer 22 and the second electrode layer 23 are respectively applied with positive polarity and negative polarity (the polarity is determined according to the positive and negative electrodes 241, 242 of the connected solar cell 24), and the first electrode layer 22 and the second electrode layer 23 are respectively connected to one end of the wire, so as to transmit the electric energy of the solar cell 24 to the electronic device connected to the other end of the two wires, so as to provide the electric energy required for the operation of the electronic device; however, in other implementations In an example, the first electrode layer 22 can also be of negative polarity, while the second electrode layer 23 is of positive polarity opposite to the polarity of the first electrode layer 22 .

The solar cell 24 has a positive electrode 241 and a negative electrode 242. It is a photoelectric element for energy conversion, and it is mainly used to convert the received sunlight energy into electrical energy. Since the solar cell 24 is no different from the known technology, Its composition and power generation principle will not be repeated. Wherein the solar cell 24 can be arranged on the first electrode layer 22 by means of soldering or conductive adhesive bonding, and the first electrode layer 22 is electrically connected with the positive electrode 241 of the cell, and the negative electrode 242 of the solar cell 24 is connected through multiple Electrically connected to the second electrode layer 23 through an electrical connector 25 . Wherein the first electrode layer 22 is opposite to the polarity of the second electrode layer 23, and the electric polarity of the first electrode layer 22 and the electrode 241 connected to the battery 24 are the same and the electric polarity of the second electrode layer 23 and the electrode 242 connected to the battery 24 same.

The frame 26 is a substantially rectangular frame structure in this embodiment, but in other embodiments, it can also be circular, polygonal and other geometric shapes. The frame 26 is made of ceramic material, and has a cavity 261, and an annular groove 262 with a suitable depth is recessed at the inner peripheral edge above the frame 26, wherein the frame 26 is respectively straddled on the base plate 21, so that The solar cell 24 is disposed inside the chamber 261 .

The material of the optical element 27 can be a transparent protective cover, a polymer, a mirror, a lens or other optical elements with good light transmittance, which are mainly arranged in the above-mentioned annular groove 262, so that the chamber 261 can be airtight , and the solar cell 24 located in the chamber 261 can block the chance of contacting with external environmental factors (such as environmental moisture, corrosive substances, dirt); as shown in Figure 6, it is the second embodiment of the present invention, In this embodiment, the frame member 26 does not need to be provided with the annular groove 262 , and the optical element 27 is directly arranged on the frame member 26 .

The bonding layer 28 can be arranged on the bottom of the substrate 21 by means of printing or coating. In this embodiment, it can be silver glue. heat sink.

The material of the dielectric material layer 29 can be transparent glue or other polymer materials with good light transmittance and insulation effect, and the selection of the material of the dielectric material layer 29 considers the material close to the refractive index of the optical element 27, Wherein the dielectric material fills the remaining space in the chamber 261 to form a dielectric material layer 29 in the chamber 261, and the dielectric material layer 29 is closely attached to the optical element 27 and simultaneously covers the solar cell 24, thereby achieving a higher level. The function of insulation and protection; In addition, when the dielectric material layer 29 is closely attached to the optical element 27, the closer the refractive index (refractive index) of the two is, the higher the light transmittance will be, and the solar energy can be improved. The received solar energy efficiency of the battery 24 .

As shown in Figure 7, it is a schematic cross-sectional view of the third preferred embodiment of the concentrating photovoltaic cell module 2 of the present invention. As a medium for solar light transmission; or as shown in FIG. 8 , it is the fourth preferred embodiment of the present invention, which is to fill the cavity 261 with a suitable capacity of dielectric material to achieve the purpose of encapsulating the solar cell 24 .

To sum up, the concentrating photovoltaic cell module 2 disclosed in the present invention is mainly provided with a frame 26 on the substrate 21 and an optical element 27 on the frame 26, so that the solar cell 24 is disposed on the frame 26 and the optical element 27 co-constructed chamber 261, and then carry out the encapsulation procedure in the chamber 261. Furthermore, the above-mentioned design can not only reduce the chance of contacting the solar cell 24 with ambient moisture, corrosive substances, and dirt through the protection of the frame 26 and the optical element 27, but also improve the overall appearance; in addition, the present invention also The distance and parallelism between the optical element 27 and the battery 24 can be adjusted by controlling the height of the frame 26 , thereby improving the efficiency of the battery 24 in receiving sunlight.

The above descriptions are only preferred embodiments of the present invention, and the above embodiments are only used to illustrate rather than limit the claims of the present invention, and the scope of the present invention is defined by the following claims. All equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims (14)

1, a kind of concentration type photovoltaic battery module comprises:

Substrate;

First electrode and second electrode are separately positioned on the precalculated position of this substrate zones of different, to form first electrode layer and the second electrode lay respectively;

Battery is arranged on this first electrode layer;

At least one electricity connector connects this second electrode lay and this battery in order to electricity; And

Framework is crossed on this substrate, makes this battery be positioned at this framework.

2, concentration type photovoltaic battery module as claimed in claim 1, wherein this battery has positive and negative electrode, and electrode is connected with this first electrode layer electricity one of in this positive and negative electrode, reach another electrode and be connected, and the electric polarity of the connected electrode of the electric polarity of this first electrode layer and the second electrode lay difference is identical with this second electrode lay electricity.

3, concentration type photovoltaic battery module as claimed in claim 1 wherein also comprises two leads, and an end of this two lead electricity respectively connects this first electrode layer and the second electrode lay.

4, concentration type photovoltaic battery module as claimed in claim 3, wherein the other end electricity of this two lead connects electronic installation, and the electric energy of using this battery is sent to this electronic installation.

5, concentration type photovoltaic battery module as claimed in claim 1, wherein this battery and the first electrode layer combination are adopted soldering or conducting resinl bonding mode.

6, as claim 1 or 5 described concentration type photovoltaic battery modules, wherein this battery is a solar cell.

7, concentration type photovoltaic battery module as claimed in claim 1, wherein this substrate is ceramic material, sapphire, AlN, SiC or BeO material.

8, concentration type photovoltaic battery module as claimed in claim 1, it also comprises optical element, be arranged on this framework, and this optical element is transparent protective cover, polymer, speculum, lens or possesses the optical element that good light penetrance is arranged.

9, concentration type photovoltaic battery module as claimed in claim 8, wherein this framework is rectangle, circle or polygon, and the inner peripheral place of this framework top is concaved with the cannelure of appropriate depth, is arranged at wherein for this optical element.

10, as claim 1,8 or 9 described concentration type photovoltaic battery modules, wherein this framework has chamber.

11, as claim 1,8 or 9 described concentration type photovoltaic battery modules, wherein this framework is made by ceramic material.

12, concentration type photovoltaic battery module as claimed in claim 1, it also comprises dielectric material, be filled in this framework encapsulating this battery, and this dielectric material is transparent adhesive tape or possesses the polymeric material that good light penetrance and insulation effect are arranged.

13, concentration type photovoltaic battery module as claimed in claim 1, it also comprises knitting layer, adopt printing or plated film mode to be arranged at this substrate below, its role is to, and the heat that produces when this photovoltaic battery module carried out opto-electronic conversion is directed to this radiating seat in conjunction with radiating seat.

14, concentration type photovoltaic battery module as claimed in claim 13, wherein this knitting layer is an elargol.

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