CN100364116C - Solar battery and battery pack thereof - Google Patents
Solar battery and battery pack thereof Download PDFInfo
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- CN100364116C CN100364116C CNB2003101124408A CN200310112440A CN100364116C CN 100364116 C CN100364116 C CN 100364116C CN B2003101124408 A CNB2003101124408 A CN B2003101124408A CN 200310112440 A CN200310112440 A CN 200310112440A CN 100364116 C CN100364116 C CN 100364116C
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- guide plate
- light guide
- solar cell
- battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The present invention relates to a solar battery which comprises a solar battery unit and a light conducting plate, wherein the solar battery unit comprises a light receiving surface; the light conducting plate has a smooth flat surface and a surface which corresponds to the smooth flat surface and has a salient point, the smooth flat surface of the light conducting plate is tightly combined with the light receiving surface of the solar battery unit, and thus, when the solar battery works, partial sun rays can enter the light conducting plate form a side surface and then enter the light receiving surface of the solar battery unit by the reflection turning of the surface with the salient point of the light conducting plate. The present invention also provides a battery pack formed by using the solar batteries as battery units. The present invention solves the problem that the existing solar battery can not be used in stacking by adding the light conducting plate in the solar battery and the battery pack thereof.
Description
[technical field]
The present invention relates to a kind of solar cell and its battery pack, refer to a kind of stackable solar cell and its battery pack especially.
[background technology]
In recent years, environmental pollution had caused global concern, and especially the greenhouse effect by the carbon dioxide that discharges cause serious problems such as global warning; And constantly grow up in energy demand, oil is about to again under the situation of approach exhaustion within this century, and people wish that strongly the new forms of energy of non-harmful non-fossil fuel produce.As a kind of solar cell of photo-electric conversion element, because safety and disposal easily have good application prospects as a kind of non-harmful energy at present.
The seventies in 20th century, the silicon solar cell of at first being developed by U.S.'s Bell Laboratory progressively grows up.Along with the development of solar cell, nowadays solar cell has polytype, and crystal silicon solar energy battery, polysilicon solar cell, non-crystal silicon solar cell, compound solar cell, DSSC etc. are typically arranged.
In the practical application,,, need with many solar cells after connection in series-parallel assembled package program, make template, become the solar cell template for improving its energy output because the electric power that single solar cell is exported is limited.
But, when solar cell uses at it, must be the front sensitive surface with its photoelectric cell, could produce electric energy by the light source direct irradiation.As Fig. 1, shown in the existing solar cell 1, when light source during by the battery side-irradiation of arrow indication, just this solar cell can't carry out opto-electronic conversion.Therefore, when it formed the battery pack use as battery unit, each battery unit can't stacked use.So, shown in second figure, need large tracts of land to launch during actual the use, make troubles for concrete enforcement, limit the scope of its use thus.
In view of this, provide a kind of solar cell that can stackedly use and its battery pack to be necessity in fact.
[summary of the invention]
For solving the problem that existing solar cell and its battery pack can't stacked uses, first purpose of the present invention is to provide a kind of solar cell that can stacked use.
Second purpose of the present invention is to provide a kind of solar battery group that can stacked use.
For realizing first purpose, the invention provides a kind of solar cell, it comprises: a solar battery cell, it comprises a sensitive surface; With a light guide plate, above-mentioned light guide plate has a smooth planar surface and the corresponding with it surface with protruding point, and at least one side, and this side connects this smooth planar surface and this has the surface of protruding point.The smooth planar surface of above-mentioned light guide plate and the sensitive surface of this solar battery cell are combined closely.When light when this side enters this light guide plate, this light by this surface reflection with protruding point to this smooth planar surface, thereby pass the sensitive surface that this smooth planar surface enters this solar battery cell.
For realizing second purpose, the invention provides a kind of solar battery group, it comprises: a plurality of solar battery cells, a battery unit and another battery unit form and are electrically connected in every adjacent two battery units, each battery unit comprises a sensitive surface and a light guide plate, and above-mentioned light guide plate has a smooth planar surface and the corresponding with it surface with protruding point; The sensitive surface of closely close this battery unit of the smooth planar surface of the light guide plate of each battery unit, so that during the work of this solar battery group, sunray can enter light guide plate by the side, enters the sensitive surface of adjacent cell after the surface reflection of the protruding point of this light guide plate turns to.
Be compared to prior art, the present invention adds light guide plate in each battery unit of solar cell and solar battery group, make light source by its side-irradiation condition under, light enters the sensitive surface of battery after the light guide plate reflection turns to, thereby makes this kind battery and battery pack can carry out normal opto-electronic conversion.This kind solar cell can stackedly be formed solar battery group thus, and for concrete enforcement offers convenience, the scope of application is more extensive.
[description of drawings]
Fig. 1 is the schematic side view of existing solar cell;
Fig. 2 is the schematic top plan view of the solar cell of Fig. 1;
Fig. 3 is the non-crystal silicon solar cell schematic diagram of first embodiment of the invention;
Fig. 4 is the DSSC schematic diagram of second embodiment of the invention;
Fig. 5 is the battery pack schematic diagram that solar cell of the present invention is formed;
Fig. 6 is the use schematic top plan view of the battery pack of solar cell composition of the present invention.
[embodiment]
Silicon solar cell is a kind of optoelectronic semiconductor thin slice that utilizes the sunlight direct generation of electricity, it mixes highly purified semi-conducting material and makes it present different character, as add boron and can form P type semiconductor, add phosphorus and can form N type semiconductor, after PN two N-type semiconductor Ns combine, when sunlight incident, produce electronics and hole, moving of electronics and hole then produces electric power.
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing:
See also Fig. 3, the solar cell of first embodiment of the invention is a non-crystal silicon solar cell 2, and it is a deposition of amorphous silicon PIN knot on the glass substrate of nesa coating, by the electrooptical device of certain electrode structure formation.Non-crystal silicon solar cell of the present invention unit comprises: a light guide plate 21 and an amorphous silicon photovoltaic element 20, above-mentioned photovoltaic element 20 further comprises a clear glass 23, with an ITO conducting film 25 formed thereon, one amorphous silicon layer 27 and a back electrode 29, above-mentioned light guide plate 21 has a smooth planar surface (not indicating) and the corresponding with it surface with protruding point 211, and the clear glass 23 of the smooth planar surface of light guide plate 21 and photovoltaic element 20 is combined closely.Above-mentioned light guide plate 21 can be printing-type light guide plate or non-printing-type light guide plate.Above-mentioned amorphous silicon layer 27 contains three layers successively: P type layer, intrinsic layer and N type layer.Above-mentioned back electrode 29 can be the aluminium electrode.
When using above-mentioned non-crystal silicon solar cell, the part solar incident ray enters battery unit from light guide plate 21 sides, and light reflects on the surface that light guide plate has protruding point 211, and reverberation spreads to all angles, penetrate by light guide plate 21 smooth surfaces, enter amorphous silicon photovoltaic element 20.Wherein, incident ray is through clear glass 23 incidents, pass the P type layer of ITO conducting film 25 and amorphous silicon layer 27, and produce photo-generated carrier at the intrinsic layer of amorphous silicon layer 27, it is electron-hole pair, this photo-generated carrier moves to ITO conducting film and above-mentioned P type layer respectively under the internal electric field effect, thus the output external circuit.
See also Fig. 4, the DSSC 3 of the second embodiment of the present invention, it comprises that one first electrode, 32, one second electrodes 36, are positioned at the light guide plate 31 that electrolyte 34 and one between first and second electrodes 32,36 is fixed in this first electrode 32.
This first electrode 32 comprises a transparent conduction base sheet 321 and a film 323 formed thereon.Transparent conduction base sheet 321 can be the tin ash electro-conductive glass that fluorine mixes.Film 323 by granularity be 1-50 how the wide bandgap semiconductor oxide material of rice make, as titanium dioxide, zinc oxide etc.It can be formed at this transparent conduction base sheet 321 by application pattern, and thickness can be the 1-50 micron.Film 323 is formed with a dye coating 325 as photosensitizer.Present embodiment adopts cis-two thiocyanate radical-two (4,4 '-dicarboxylic acids-2,2 '-bipyridine) closes ruthenium cis-dithiocyanato bis (4,4 '-dicarboxy-2,2 '-bipyridine) ruthenium (abbreviating the N3 dyestuff as), it is mixed with certain density solution or gel, it is adsorbed on the film 323, form dye coating 325 thus by the mode of soaking.It should be noted that transparent conduction base sheet 321, film 323 and dye coating 325 also can select for use other material to form respectively, should be with in addition limit of present embodiment.
Second electrode 36 generally includes a conductive substrate 361 and a metal level 363 formed thereon.Conductive substrate 361 is generally electro-conductive glass.Inert metals such as metal level 363 Ying Youjin, platinum are formed, and can be formed at conductive substrate 361 side surface relative with first electrode 32 by the mode of plated film.Metal level 363 preferably has a smooth surface, in order to produce direct reflection, to improve the utilance of light.Certainly, second electrode 36 also can directly be a metal electrode of being made up of inert metals such as gold, platinum.This metal electrode and first electrode, 32 facing surfaces preferably also have high-flatness.
Electrolyte 34 can be skim redox electrolytes matter solution between first electrode 32 and second electrode 36, select iodine/lithium iodide electrolyte for use.Electrolyte 34 also can be solid-state, and promptly DSSC 3 can be solid state battery, is not necessarily limited to present embodiment.
This light guide plate 31, it is fixed in the opposite side surface relative with the film 323 of first electrode 32, and it can be printing-type light guide plate or non-printing-type light guide plate.Above-mentioned light guide plate 31 has a smooth planar surface (not indicating) and the corresponding with it surface with protruding point 311, it penetrates after being mainly used in and making the light that incides this light guide plate 31 change direction, and the smooth planar surface of above-mentioned light guide plate 31 is adjacent with first electrode 32.The part light that is sent by light source arrives these light guide plate 31 by transparent conduction base sheet 321 backs of first electrode 32, reflect in another surperficial protruding point 311 through this smooth surface, thereby the change direction reenters first electrode 32 and arrives dye coating 325.
In addition, the light of incident also simultaneously enters light guide plate 311 by the side of light guide plate 311, and 311 reflects in the protruding point, thereby the change direction reenters first electrode 32 and arrives dye coating 325.
See also Fig. 5, solar battery group 4 of the present invention comprises a plurality of solar battery cells 40, and a battery unit and another battery unit form and be electrically connected in every adjacent two battery units.This solar battery cell also further comprises a light guide plate 41, this light guide plate 41 comprises a smooth planar surface (indicate) and with it to the right surface with protruding point (sign), the above-mentioned smooth surface and the sensitive surface of this solar battery cell 40 are combined closely, so that during this solar cell working, incident ray can enter described light guide plate 41 by upper side, and the protruding point surface reflection that has through this light guide plate turns to after entered the sensitive surface of solar battery cell 40 by smooth surface again.Above-mentioned solar battery cell 40 can be non-crystal silicon solar cell, polysilicon solar cell, crystal silicon solar energy battery, compound solar cell, DSSC etc.
The present invention adds the light pipe of light guide plate in each battery unit of solar cell and solar battery group, make and to receive light by side incident at light source, enter battery after light is turned to by this light guide plate, thereby this kind battery and battery pack can be carried out normal opto-electronic conversion.This kind solar cell can stackedly be formed solar battery group thus, and for concrete enforcement offers convenience, the scope of application is more extensive.As shown in Figure 6, stacked solar cell group 5 of the present invention can be according to the needs flexible design in space, design that need not spread overwide areas.
Claims (12)
1. solar cell, it comprises:
One solar battery cell comprises a sensitive surface;
With a light guide plate, this light guide plate has a smooth planar surface and the corresponding with it surface with protruding point, and at least one side, and this side connects this smooth planar surface and this has the surface of protruding point;
The smooth planar surface of this light guide plate and the sensitive surface of this solar battery cell are combined closely;
When light when this side enters this light guide plate, this light by this surface reflection with protruding point to this smooth planar surface, thereby pass the sensitive surface that this smooth planar surface enters this solar battery cell.
2. a kind of solar cell as claimed in claim 1 is characterized in that solar battery cell is non-crystal silicon solar cell, polysilicon solar cell, crystal silicon solar energy battery, compound solar cell or DSSC.
3. a kind of solar cell as claimed in claim 1 is characterized in that light guide plate comprises printing-type light guide plate or non-printing-type light guide plate.
4. a kind of solar cell as claimed in claim 2 is characterized in that this non-crystal silicon solar cell comprises a clear glass and ITO conducting film one of formed thereon successively, an amorphous silicon layer and a back electrode, and above-mentioned clear glass forms sensitive surface; The clear glass of the smooth planar surface of above-mentioned light guide plate and amorphous silicon photovoltaic element is combined closely.
5. a kind of solar cell as claimed in claim 4 is characterized in that back electrode is the aluminium electrode.
6. a kind of solar cell as claimed in claim 2, it is characterized in that this DSSC comprises: one first electrode, it comprises that a transparent conduction base sheet and is formed at this transparent conduction base sheet, is loaded with the film of dye molecule, and above-mentioned first electrode forms the sensitive surface of battery; One second electrode; And a electrolyte between first and second electrodes; Wherein, the smooth planar surface of this light guide plate is adjacent with described first electrode.
7. solar battery group, it comprises:
A plurality of solar battery cells, a battery unit and another battery unit form and are electrically connected in every adjacent two battery units, each battery unit comprises a sensitive surface and a light guide plate, and above-mentioned light guide plate has a smooth planar surface and the corresponding with it surface with protruding point;
The smooth planar surface of the light guide plate of each battery unit and the sensitive surface of this battery unit are combined closely.
8. a kind of solar battery group as claimed in claim 7 is characterized in that solar battery cell can be non-crystal silicon solar cell, polysilicon solar cell, crystal silicon solar energy battery, compound solar cell or DSSC.
9. a kind of solar cell as claimed in claim 7 is characterized in that light guide plate comprises printing-type light guide plate or non-printing-type light guide plate.
10. a kind of solar battery group as claimed in claim 8 is characterized in that non-crystal silicon solar cell, comprises a clear glass and an ITO conducting film formed thereon successively, an amorphous silicon layer and a back electrode, and above-mentioned clear glass forms sensitive surface; The clear glass of the smooth planar surface of above-mentioned light guide plate and amorphous silicon photovoltaic element is combined closely.
11. a kind of non-crystal silicon solar cell group as claimed in claim 10 is characterized in that back electrode is the aluminium electrode.
12. a kind of solar battery group as claimed in claim 8, it is characterized in that DSSC comprises: one first electrode, it comprises that a transparent conduction base sheet and is formed at this transparent conduction base sheet, is loaded with the film of dye molecule, and above-mentioned first electrode forms the sensitive surface of battery; One second electrode; And a electrolyte between first and second electrodes; Wherein, the smooth planar surface of this light guide plate is adjacent with described first electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101124408A CN100364116C (en) | 2003-11-29 | 2003-11-29 | Solar battery and battery pack thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101124408A CN100364116C (en) | 2003-11-29 | 2003-11-29 | Solar battery and battery pack thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1622342A CN1622342A (en) | 2005-06-01 |
| CN100364116C true CN100364116C (en) | 2008-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101124408A Expired - Fee Related CN100364116C (en) | 2003-11-29 | 2003-11-29 | Solar battery and battery pack thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008084762A (en) * | 2006-09-28 | 2008-04-10 | Tdk Corp | Photoelectric conversion element and its manufacturing method |
| CN102254700B (en) * | 2011-05-13 | 2012-11-28 | 西安交通大学 | Light side entry type dye sensitized solar battery pack with laminated structure and manufacturing process thereof |
| CN105514193A (en) * | 2016-01-13 | 2016-04-20 | 京东方科技集团股份有限公司 | Photoluminescence device and display equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205991Y (en) * | 1994-10-14 | 1995-08-23 | 李毅 | Solar noncrystalline silicon cell |
| JP2000031515A (en) * | 1998-07-13 | 2000-01-28 | Bridgestone Corp | Solar cell module |
| JP2000150942A (en) * | 1998-11-18 | 2000-05-30 | Sekisui Chem Co Ltd | Solar battery module and its manufacture |
| CN1350334A (en) * | 2001-12-06 | 2002-05-22 | 北京大学 | Solar cell electrode of nanometer crystal film and its prepn |
| US6441300B2 (en) * | 2000-05-15 | 2002-08-27 | Sharp Kabushiki Kaisha | Solar battery module |
| JP2002299661A (en) * | 2001-03-30 | 2002-10-11 | Kyocera Corp | THIN-FILM CRYSTALLINE Si SOLAR CELL |
| JP2003218378A (en) * | 2002-01-22 | 2003-07-31 | Fuji Photo Film Co Ltd | Optical power generation unit |
-
2003
- 2003-11-29 CN CNB2003101124408A patent/CN100364116C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205991Y (en) * | 1994-10-14 | 1995-08-23 | 李毅 | Solar noncrystalline silicon cell |
| JP2000031515A (en) * | 1998-07-13 | 2000-01-28 | Bridgestone Corp | Solar cell module |
| JP2000150942A (en) * | 1998-11-18 | 2000-05-30 | Sekisui Chem Co Ltd | Solar battery module and its manufacture |
| US6441300B2 (en) * | 2000-05-15 | 2002-08-27 | Sharp Kabushiki Kaisha | Solar battery module |
| JP2002299661A (en) * | 2001-03-30 | 2002-10-11 | Kyocera Corp | THIN-FILM CRYSTALLINE Si SOLAR CELL |
| CN1350334A (en) * | 2001-12-06 | 2002-05-22 | 北京大学 | Solar cell electrode of nanometer crystal film and its prepn |
| JP2003218378A (en) * | 2002-01-22 | 2003-07-31 | Fuji Photo Film Co Ltd | Optical power generation unit |
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| CN1622342A (en) | 2005-06-01 |
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