TWI249862B - Solar battery and solar battery assembly - Google Patents

Abstract

A solar battery includes a light guide plate and a solar cell having an incident surface. The light guide plate has a smooth surface and an opposite face having protrusive points. The smooth surface of light guide plate is disposed adjacent to the incident face of the solar cell. Solar light can enter into the light guide plate from a side of light guide plate, and is reflected to the solar cell by the protrusive points. A solar battery assembly constructed by such solar batteries is proposed accordingly.

Description

1249862 __Case number 9213385 (1 V. Description of invention (1)

TECHNICAL FIELD The present invention relates to a solar cell and a battery pack thereof, and more particularly to a layer® solar cell and a battery pack thereof. [Prior Art] The recent oxidation is born in the context of energy demand. As a disposal, the solar cell battery of the 20th solar cell has solar energy sensitization for many years, and the greenhouse effect of environmental pollution of carboniferous has been continuously growing. People strongly hope that before the photoelectric conversion, as a kind of no-discipline 70 years, gradually developed into various types. , Dianchi, amorphous silicon solar cells, etc. The energy that has caused all the global oil, that is, the pollution-free components, is too damaging. With the rise of the temperature of the solar cell with the solar cell, the temperature of the solar cell will rise in this world. The source of the solar cell, the compound of the first solar cell, the compound of the sun, the compound, etc. Yes, due to the development of the application of the front of the application of 'energy battery, solar power problem; J 殆 ^ ^ source and full J landscape.矽i 今太段 Polycrystalline pool, poor

In the inter-application, 'since the power output from a single solar cell has = power generation*, it is necessary to seal a lot of solar energy into a template to become a solar cell template. Quasi, too% of the battery can be used in its use. ,

The surface is exposed to light, and the light source is directly irradiated to generate electricity: as expected = two for two solar cells 1 as shown when the light source is broken by an arrow. In the case of the first picture, the solar cell cannot be used for the side illumination of the battery for photoelectric conversion. Therefore, as shown in the second figure, the actual stacking is used to expand the area by 4

1249862

Incorporating the inconvenience of the body' thus limiting its use. In view of this, it is necessary to provide a stackable pool. [Content] The scope. Solar Cell and Its Use In order to solve the conventional solar cell and its electrical problems, a first object of the present invention is to provide an energy battery. The pool group cannot be stacked and used. The second battery pack of the present invention. The present invention provides a solar cell comprising: a solar cell unit including a light receiving surface; and a light guide plate having a smooth flat surface and Correspondingly having a surface of the protruding point, the smooth flat surface of the light guide plate is closely coupled with the surface of the solar cell, so that when the solar cell is in operation, part of the sunlight can enter the light guide plate from the side, and then After being reflected by the surface of the light guide plate having the convex point, the surface of the light guide plate enters the light receiving surface of the solar cell via the smooth surface. To achieve the second object, the present invention provides a solar battery module comprising: a plurality of solar battery cells, wherein one battery cell of each adjacent two battery cells forms an electrical connection with another battery cell, each battery cell including a light receiving surface and The light guide plate has a smooth flat surface and a corresponding surface having a convex point; the smooth flat surface of the light guide plate of each battery unit is closely adjacent to the light receiving surface of the battery unit, so that the solar battery pack When working, the sun's rays can enter the light guide plate from the side, and the light guides through the light guide.

1249862

_ Case No. 92133850 V. DESCRIPTION OF THE INVENTION (3) The surface of the convex point of the plate is reflected and turned into the adjacent battery unit. Compared with the prior art, the present invention adds a light guide plate to the solar cell: = each light source, < Second, under the condition that the light is reflected by the light guide plate and turned into the battery, so that the battery and the battery pack can perform the normal f-plane, and the solar cells can be stacked to form the solar energy for the convenience of the species. The scope is more extensive. For the specific implementation of the belt [Embodiment] f solar cell is a direct use of solar light power generation, which is doped with high-purity semiconductor material to make it not = quality 'such as adding a shed can form a P-type semiconductor, adding a dish can form a raw When the body 'PN two semiconductors are combined, when the sunlight is incident, the electricity and the holes are generated, and the movement of electrons and electric holes generates electric power. The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. Referring to the third figure, the solar cell of the first embodiment of the present invention is an amorphous germanium solar cell 2 which is attached to a glass substrate of a transparent conductive film. Amorphous 矽 PIN junction, a photoelectric converter formed by a certain electrode structure. The amorphous solar cell unit of the present invention comprises: a light guide plate 21 and an amorphous germanium photoelectric sheet 7 〇 20, the photovoltaic unit 2 〇 further comprising a transparent glass 23, and an ITO conductive film formed thereon 25, an amorphous germanium layer 2 and a back electrode 29, the light guide plate 21 has a smooth flat surface (not labeled) and a corresponding surface (not labeled) having a convex point 211, the light guide plate 21 The smooth flat surface is closely tied to the transparent glass 23 of the photovoltaic unit 2

Page 8 1249862 Amendment Case No. 92133850 V. Description of the Invention (4) The above-mentioned light guide plate 21 may be a printed light guide plate or a non-printed light guide plate. The amorphous germanium layer 27 sequentially contains three layers: a p-type layer, an intrinsic layer, and an N-type layer. The back electrode 29 may be an aluminum electrode. When the amorphous solar energy solar energy is used, part of the incident light of the sun enters the battery from the side of the light guide plate 2, and the light is reflected on the surface of the light guide plate having the convex point 2 1 , and the reflected light is diffused to various angles, and the light guide plate is diffused. 21 smooth surface is emitted and enters the amorphous germanium photovoltaic unit 2〇. Among them, the incident light is incident through the transparent glass 23, passes through the ITO conductive film 25 and the amorphous germanium layer 27? a layer, and photon carriers are generated in the intrinsic layer of the amorphous germanium layer 27, that is, electrons and electrons are moved to the 丨τ 〇 conductive film and the Ρ under the action of the built-in electric field. The layer is printed to output an external circuit. Referring to FIG. 4, a dye-sensitized solar cell 3 according to a second embodiment of the present invention includes a first electrode 32, a second electrode 36, and a first electrode and a second electrode 32, 36. The electrolyte 34 and a light guide plate 31 fixed to the first electrode 32. The first electrode 32 includes a transparent conductive substrate 321 and a film 323 formed thereon. The transparent conductive substrate 321 can be a fluorine doped tin oxide conductive glass. The film 323 is made of a wide band gap conductor oxide material having a particle size of 1 to 50 nm, such as titanium oxide, zinc oxide or the like. It may be formed on the transparent conductive substrate 321 by coating, and may have a thickness of 1 - 5 Å. The film 323 is formed with a dye layer 325 serving as a photosensitizer. In this example, cis-dithiocyanato-bis(4,4'-dicarboxylic acid-2,2'-bipyridyl) ruthenium (: 丨3-dithiocyanato bis (4,4'-dicarboxy-2, 2,-bipyridine) ruthenium (referred to as N3 dye), which is formulated into a solution of a certain concentration

Page 9 12498862 _____ Case No. 92133850 External Year Ί 〆 曰 曰 一 一 一 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 或 、 、 或 或 或 或 或. It should be noted that the transparent conductive substrate "I, the film 323 and the dye layer 325 may also be made of other materials, and should not be limited by this embodiment. The second electrode 36 generally includes a conductive substrate 361 and a formation The metal layer 363 thereon. The conductive substrate 361 is usually a conductive glass. The metal layer 363 should be composed of an inert metal such as gold or a chain, and can be formed by the mineral film on the opposite side of the conductive substrate 361 from the first electrode 32. The side surface. The metal layer 363 preferably has a smooth surface for generating specular reflection to improve the utilization of light. Of course, the second electrode 36 can also directly be a metal electrode composed of an inert metal such as gold or a face. Preferably, the surface of the metal electrode opposite to the first electrode 32 also has a high degree of flatness. The electrolyte 34 is located between the first electrode 32 and the second electrode 36, and may be a thin layer of emulsified reducing electrolyte solution, using moth/moth moth The electrolyte 34 can also be solid, that is, the dye-sensitized solar cell 3 can be a solid battery, and is not necessarily limited to the embodiment. The light guide plate 31 is fixed to the film 323 of the first electrode 32. The other side surface may be a printed light guide plate or a non-printed light guide plate. The light guide plate 31 has a smooth flat surface (not shown) and a surface (not labeled) having a convex point 311 corresponding thereto. It is mainly used to make the light incident on the light guide plate 31 change direction, and the smooth flat surface of the light guide plate 31 is adjacent to the first electrode 32. A part of the light emitted by the light source passes through the transparent conductive substrate of the first electrode 32. After reaching 321 to the light guide plate 31, the smooth surface is reflected at the convex point 311 of the other surface, thereby changing

Page 10 1249862 ^^ 92133850 Year/January 曰 V. OBJECT DESCRIPTION (6) The direction re-enters the first electrode 32 and reaches the dye layer 325. The incident light is also incident on the light guide plate 3 11 ' from the side of the light guide plate 31 and is reflected at the convex point 31 to change direction to re-enter the first electrode 32 and reach the dye layer 325. Referring to the fifth figure, the solar battery unit 4 of the present invention includes a plurality of solar battery cells 40, and one battery cell of each adjacent two battery cells is electrically connected to another battery cell. The solar cell unit further includes a light guide plate 41 including a smooth flat surface (not labeled) and a surface (not labeled) having a convex point opposite thereto, the smooth surface and the solar cell The light-receiving surface of the unit 40 is tightly coupled, so that when the solar cell is in operation, the incident light can enter the light guide plate 4 i from the upper side, and then turn to the solar cell through the smooth surface through the reflective surface of the light plate. The light surface of 40. The above solar cell unit 4A may be an amorphous solar cell, a polycrystalline solar cell, a crystalline germanium solar cell, a compound solar cell, a dye-sensitized solar cell or the like. The light guide device of the light guide plate is added to each battery unit of the solar cell and the solar battery group, so that the light source can receive the light incident from the side surface, and the light enters the battery after being turned through the light guide plate, thereby the battery and the battery. The group can perform normal photoelectric conversion. Therefore, the solar cells can be stacked to form a solar battery pack, which is convenient for implementation and has a wider range of applications. As shown in the sixth drawing, the laminated solar battery unit 5 of the present invention can be flexibly designed according to the needs of the space, and does not require a large-area spread design. In summary, the invention has indeed met the requirements of the invention patent,

1249862 Amendment _ Case No. 92133850 V. Invention Description (7) Patent application. However, the above-mentioned embodiments are merely preferred embodiments of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims.

Page 12 1249862 _ Case No. 92113850 July __ BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a side view of a conventional solar cell; the second figure is a top view of the solar cell of the first figure; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 4 is a schematic view of a dye-sensitized solar cell according to a second embodiment of the present invention; and FIG. 5 is a schematic view of a battery pack composed of a solar cell of the present invention; A schematic top view of the use of a battery pack composed of the solar cell of the present invention. [Description of main component symbols] Amorphous germanium solar cell 2 Dye-sensitized solar cell 3 Solar cell 4 Solar cell 40 Laminated solar cell 5 Amorphous germanium photovoltaic cell 20 Light guide plate 21, 3 1 , 41 Transparent glass 23 ITO Conductive film 25 Amorphous germanium layer 27 Back electrode 29 First electrode 32 Electrolyte 34 Film 323 Transparent conductive substrate 321 Second electrode 36 Projection points 211, 311 Dye layer 325 Conductive substrate 361 Metal layer 363

Page 13

Claims (1)

1249862 —----Case No. 92133850 This year ^月Λ >日一_ -6, the scope of application for patents ^ a solar cell, comprising: a solar cell unit comprising / receiving surface; and a light guide plate, the light guide plate has a a smooth flat surface and a surface having a convex point corresponding thereto; the smooth flat surface of the light guide plate is tightly coupled to the light receiving surface of the solar cell unit. 2. A solar cell according to claim 1, wherein the solar cell unit is an amorphous germanium solar cell, a polycrystalline germanium solar cell, a crystalline germanium solar cell, a compound solar cell or a dye-sensitized solar cell. . 3. A solar cell 'where' as described in the scope of the patent application. The light guide plate may be a printed light guide plate or a non-printed light guide plate, and a solar cell according to claim 2, wherein the amorphous day solar cell comprises a transparent glass, and / One of the above ITO conductive films, an amorphous germanium layer and a back electrode, the 'transparent surface transparent glass is formed as a light receiving surface; the smoothness of the light guiding plate is closely combined with the transparent glass of the amorphous germanium photovoltaic unit. 5. A solar cell as described in claim 4, wherein the back electrode is an aluminum electrode. A solar cell according to claim 2, wherein the solar cell comprises: a first electrode, a thin substrate coated thereon, and a transparent conductive substrate formed on the solar cell , carrying a dye, = electric film 'the first electrode is formed as a light receiving surface of the battery; 〆 middle, the pole; and an electrolyte between the first and second electrodes '" 1249862 __室号 92133850月 -------- — VI. Patent Application Scope The smooth and flat surface of the light guide plate is adjacent to the first electrode. 7. A solar cell according to claim 6, wherein the solar cell inlet z# comprises a layer of transparent material between the light guide plate and the first electrode. 8 - a solar battery pack comprising: a plurality of solar battery cells, wherein one battery cell of each adjacent two battery cells is electrically connected with another battery cell, each battery cell comprising a light receiving surface and a light guide plate, The light guide plate has a smooth flat surface and a corresponding surface having a convex point; the smooth flat surface of the light guide plate of each battery unit is tightly coupled with the light receiving surface of the battery unit. The solar battery unit of claim 8, wherein the solar battery unit is an amorphous germanium solar cell, a polycrystalline germanium solar cell, a crystalline germanium solar cell, a compound solar cell, or a dye-sensitized solar cell. battery. A solar battery pack according to claim 9, wherein the light guide plate may be a printed light guide plate or a non-printed light guide plate. The solar cell of claim 1, wherein the solar cell comprises a transparent glass, and one of the amorphous layers of the conductive film a back electrode, the transparent glass is formed as a light receiving surface, and the smooth flat surface of the light guide plate is closely combined with the transparent glass of the amorphous germanium photoelectric unit. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 13. The solar cell of claim 10, wherein the solar cell comprises: a first electrode comprising a transparent conductive substrate and a transparent conductive substrate formed thereon a film having a dye molecule, wherein the first electrode is formed as a light receiving surface of the battery; a second electrode; and an electrolyte between the first electrode and the second electrode; wherein the smooth flat surface of the light guide plate and the The first electrodes are adjacent. 14. The solar cell of claim 1, wherein the solar cell further comprises a layer of transparent material between the light guide plate and the first electrode. Page 16 1249862 -- Plug No. 92133850 4 July 1st, July 1st Revision "'"" / ' "_| | — IV. Chinese Abstract (Invention Name: Solar Cell and Its Battery Pack) a solar cell comprising: a solar cell unit comprising a light receiving surface; and a light guide plate having a smooth flat surface and a surface having a convex point corresponding to the smooth flat surface of the light guide plate And the light-receiving surface of the solar cell unit is tightly coupled, so that when the solar cell is in operation, part of the sunlight can enter the light guide plate from the side, and then the surface of the light guide plate having the convex point is reflected and turned into the solar energy. The light receiving surface of the battery unit. The present invention also provides a battery pack in which the above solar cell is a battery unit. The invention adds a light guide plate to a solar cell and a battery pack thereof, and solves the problem that the conventional solar cell cannot be used. V. (1) The representative figure of this case is ················································································· A light battery includes a light guide plate and a solar cell having an incident surface. The light guide plate has a smooth surface and an opposite face having protrusive points. The smooth surface of light guide plate is disposed adjacent to The incident face of the solar cell. Solar light can enter into the light guide plate from a side of light guide plate, and is reflected to the 1249862 _Case No. 92133850 Inclined Years and Months _ί±^ Six, designated representative map