KR101172165B1 - device and method for sealing electrolyte injection entrance of dye sensitized solar cell - Google Patents

device and method for sealing electrolyte injection entrance of dye sensitized solar cell Download PDF

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Publication number
KR101172165B1
KR101172165B1 KR20100067805A KR20100067805A KR101172165B1 KR 101172165 B1 KR101172165 B1 KR 101172165B1 KR 20100067805 A KR20100067805 A KR 20100067805A KR 20100067805 A KR20100067805 A KR 20100067805A KR 101172165 B1 KR101172165 B1 KR 101172165B1
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South Korea
Prior art keywords
injection hole
electrolyte injection
sealing
electrolyte
sealing member
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KR20100067805A
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Korean (ko)
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KR20120007188A (en
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김도헌
정성훈
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주식회사 이건창호
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Priority to KR20100067805A priority Critical patent/KR101172165B1/en
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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
    • Y02E10/542—Dye sensitized solar cells

Abstract

An electrolyte injection port sealing apparatus and method for dye-sensitized solar cells are provided.
Electrolyte injection hole sealing device for a dye-sensitized solar cell according to the present invention is opposed to the upper substrate and the lower substrate spaced at a predetermined interval, facing, the electrolyte injection hole sealing device of the dye-sensitized solar cell filled with an electrolyte between the upper substrate and the lower substrate The electrolyte injection hole is provided in the upper substrate, tapered in the form of a width decreases toward the lower substrate direction, characterized in that the electrolyte injection hole is fitted with a sealing member, the electrolyte injection hole sealing method and apparatus according to the present invention Instead of sealing the periphery of the electrolyte inlet, the structure of the electrolyte inlet is tapered, and the electrolyte inlet is sealed by inserting a separate sealing member into the tapered electrolyte inlet. Therefore, the present invention is superior in economy and sealing effect as compared with the prior art of attaching the periphery of the electrolyte inlet in the form of a film.

Description

Apparatus and method for sealing electrolyte injection for dye-sensitized solar cells

The present invention relates to a device and a method for sealing an electrolyte injection hole for a dye-sensitized solar cell, and more particularly, instead of sealing an electrolyte injection hole peripheral part, the electrolyte injection hole has a tapered shape, and is separately sealed to the tapered electrolyte injection hole. Since the electrolyte injection opening is sealed by fitting the member, the present invention relates to an electrolyte injection opening sealing apparatus and method for dye-sensitized solar cells excellent in economical efficiency and sealing effect, as compared with the conventional art of attaching the periphery of the electrolyte injection opening in the form of a film.

A typical dye-sensitized solar cell is a dye-sensitized solar cell using nanoparticle titanium oxide, which was developed by Michael Gratzel of the Swiss National Lausanne Institute of Technology in 1991. This dye-sensitized solar cell has the advantage that the manufacturing cost is cheaper than the conventional silicon solar cell, and the electrode is transparent, so that it can be applied to a glass wall or a glass greenhouse of a building, but the photoelectric conversion efficiency is low, and thus the practical application is limited. The dye-sensitized solar cell is composed of a transparent conductive electrode coated with a nanocrystalline oxide film on which dye molecules are adsorbed, a counter electrode coated with metal platinum, and an electrolyte that functions as a redox. The dye-sensitized solar cell having such a configuration is used by having one dye-sensitized solar cell on one substrate or by connecting a plurality of dye-sensitized solar cells on one substrate to be used in a module form. Such conventional

The dye-sensitized solar cell module, which is installed with a large number of dye-sensitized solar cells, is mainly applied to the building integrated photovoltaic (BIPV) field. If leaked, it is difficult to recover it, which is a problem in the commercialization of dye-sensitized solar cells.

1 is a plan view of a dye-sensitized solar cell including an electrolyte injection hole 12.

Referring to FIG. 1, each of the independent submodules includes a plurality of electrolyte injection holes 12, and after bonding two substrates facing each other, a liquid electrolyte is injected through the electrolyte injection holes 12. The problem is that the injected electrolyte expands according to the external environment (e.g. temperature rise), resulting in a constant pressure. That is, the electrolyte may leak through the electrolyte injection holes 12 provided with the plurality, along with the possibility of the electrolyte leaking out of the entire substrate.

Conventionally, the electrolyte injection hole sealing method is a method of sealing a periphery of the electrolyte injection hole similarly to a substrate bonding method, and then blocking the inlet portion of the electrolyte injection hole with a cover glass. However, film-type sulfine is limited in mass production because it has to rely on manual labor. In addition, because sulfine is converted to a liquid phase at about 130 ℃ Celsius high temperature conditions are required. Furthermore, sealing the electrolyte injection port peripheral part after cutting out the film-formed sulfine in a fine size may be a factor that affects the quality and the time taken for the work according to the skill of the work. In addition, the sealing of the electrolyte inlet using sulfine does not completely cope with the violent temperature change caused by the solar cell, so leakage occurs over time, and this result causes a problem that affects the efficiency drop. In addition, since the dye-sensitized solar cell uses an electrolyte containing iodine and acetonitrile as its main constituents, such a sealing material should also be a material having no chemical resistance and no solubility in organic solvents. It is a situation that can not be started.

Therefore, the problem to be solved by the present invention is to provide a new electrolyte injection port sealing device for a dye-sensitized solar cell that the electrolyte is not leaked.

Another object of the present invention is to provide a sealing method for dye-sensitized solar cells that can effectively prevent electrolyte leakage.

In order to solve the above problems, the present invention, the upper substrate and the lower substrate is spaced apart at a predetermined interval, facing, in the electrolyte injection hole sealing apparatus of the dye-sensitized solar cell filled with the electrolyte between the upper substrate and the lower substrate, The electrolyte injection hole is provided in the upper substrate, tapered in the form of decreasing width toward the lower substrate direction, characterized in that the sealing member is fitted to the electrolyte injection hole.

In one embodiment of the present invention, the material of the sealing member is plastic or metal, and the sealing member has a predetermined level of elasticity and has a cylinder structure having a width greater than or equal to the minimum width of the lower end of the electrolyte injection hole.

In addition, the sealing member may protrude further to a lower end of the electrolyte injection hole by a predetermined height, the electrolyte injection hole is filled with a photocurable adhesive, the cover glass substrate is bonded to the upper portion of the electrolyte injection hole.

In order to solve the above another problem, the present invention provides a method for sealing an electrolyte inlet of a dye-sensitized solar cell in which an upper substrate and a lower substrate are spaced apart at predetermined intervals to face each other, and an electrolyte is filled between the upper substrate and the lower substrate. The method includes inserting a cylindrical sealing member having a diameter greater than or equal to a lower width of the electrolyte inlet to a tapered electrolyte inlet having a width that decreases downwardly; And pressing the sealing member toward the lower substrate to protrude the sealing member by a predetermined height from a lower end of the electrolyte injection hole, and providing a sealing method of the electrolyte injection hole of the dye-sensitized solar cell. The material of may be a metal or plastic having a certain level of elasticity.

In addition, the sealing member is restored to a diameter larger than the bottom width of the electrolyte injection hole as it protrudes from the lower end of the electrolyte injection hole, the method after the pressing step of the sealing member, the step of filling an adhesive filler in the electrolyte injection hole ; And a filler filled with an upper end of the electrolyte injection hole may be sealed by a cover glass substrate.

The method and apparatus for sealing an electrolyte injection hole according to the present invention, instead of sealing the peripheral portion of the electrolyte injection hole, the structure of the electrolyte injection hole is tapered, and seals the electrolyte injection hole by inserting a separate sealing member into the tapered electrolyte injection hole. . Therefore, the present invention is superior in economy and sealing effect as compared with the prior art of attaching the periphery of the electrolyte inlet in the form of a film.

1 is a plan view of a dye-sensitized solar cell including an electrolyte injection hole 12.
2 is a cross-sectional view of an electrolyte injection hole of a sealing device for a dye-sensitized solar cell according to an embodiment of the present invention.
3 is a view showing a state after the sealing member is inserted into the electrolyte injection hole 210 of FIG.
4 is a cross-sectional view of an electrolyte injection hole sealing apparatus for a dye-sensitized solar cell, in which a sealing member protrudes by a predetermined height according to another embodiment of the present invention.
5 is a view showing a state in which the sealing member seals the electrolyte injection hole according to another embodiment of the present invention.
6 to 8 are steps of the electrolyte injection hole sealing method of the dye-sensitized solar cell according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the drawings. The following embodiments are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms. In the drawings, the width, length, thickness, etc. of the components may be exaggerated for convenience. Like numbers refer to like elements throughout.

The dye-sensitized solar cell according to the present invention has a structure in which upper and lower substrates are spaced at predetermined intervals, and the upper and lower substrates are filled with an electrolyte. That is, the dye-sensitized solar cell according to the present invention is adsorbed on two electrodes (semiconductor and counter electrode) facing each other on a transparent substrate such as glass, a TiO 2 layer laminated on a semiconductor electrode, and the TiO 2 layer. It has a structure consisting of a dye and an electrolyte layer filling the electrode, which is the same as the conventional dye-sensitized solar cell structure.

However, in the present invention, in order to inject an electrolyte between two electrodes, a dye-sensitized form in which an electrolyte injection hole penetrating one of the upper and lower substrates to a predetermined size is reduced in the direction of another opposing substrate. Provided is a sealing device for a solar cell.

2 is a cross-sectional view of an electrolyte injection hole of a sealing device for a dye-sensitized solar cell according to an embodiment of the present invention.

Referring to FIG. 2, the electrolyte injection hole 210 according to the present invention penetrates through the upper substrate 200 in a hole shape, and the electrolyte injection hole 210 faces the lower substrate 220 facing the upper substrate (that is, As it goes down, its width (diameter, diameter) decreases. The present invention allows the sealing member for preventing electrolyte leakage to be more easily inserted into the electrolyte injection hole by tapering the shape of the electrolyte injection hole.

3 is a view showing a state after the sealing member is inserted into the electrolyte injection hole 210 of FIG.

Referring to FIG. 3, a sealing member 230 having a structure corresponding to the planar structure of the electrolyte injection hole 210 is inserted into the electrolyte injection hole 210. The corresponding structure here means that if the electrolyte injection hole 210 has a circular planar structure (hole), the sealing member 230 also has the same circular structure, and the present invention thus coplanar structure The sealing member 230 of the implant is implanted in the electrolyte injection hole, to provide a sealing device having a pillar that is physically fixed.

In one embodiment of the present invention, since the electrolyte injection hole 210 is a circular hole, the sealing member 230 has a circular structure having a predetermined height, that is, a cylinder structure, and the cylinder structure is implanted in the electrolyte injection hole. .

Referring back to Figure 3, the sealing member according to an embodiment of the present invention has a width equal to or larger than the width (diameter in the case of a circle) of the lower end (A) of the electrolyte injection hole. If the diameter of the sealing member is smaller than the width of the lower end of the injection hole A, the effect of preventing leakage of the electrolyte by the sealing member is lost.

In another embodiment of the present invention, the sealing member has a predetermined level of elasticity, and at the lower end of the injection hole having a width smaller than the diameter of the sealing member, the sealing member penetrates through the electrolyte injection hole by a force applied to the predetermined height. As long as it can protrude.

4 is a cross-sectional view of an electrolyte injection hole sealing apparatus for a dye-sensitized solar cell, in which a sealing member protrudes by a predetermined height according to another embodiment of the present invention.

Referring to FIG. 4, a sealing member protrudes from the lower end A of the electrolyte injection hole A for the dye-sensitized solar cell by a predetermined height h. In particular, the protruding sealing member extends to the side surface of the lower end of the tapered injection hole. Seal it completely. For such lateral expansion, it is preferable that the sealing member has a predetermined elasticity, and the degree of elasticity is sufficient if the sealing member can penetrate a narrower injection hole. As the sealing main material having such elasticity, a metal or a plastic may be used, but the scope of the present invention is not limited thereto.

5 is a view showing a state in which a sealing member seals an electrolyte injection hole according to another embodiment of the present invention.

Referring to FIG. 5, the electrolyte injection hole 210 is tapered, and a sealing member is fitted at a lower end of the injection hole. However, since a significant space (B) remains between the sealing member and the inlet, the present invention fills the inlet space (B) with a photocurable adhesive, for example a UV curable adhesive (240), thereby generating from the sealing member. The leakage of the electrolyte is completely prevented, and the mechanical strength of the sealing member is increased.

The cover glass substrate 250 is laminated and bonded on the upper inlet C of the electrolyte injection hole filled with the adhesive to seal the upper end of the electrolyte injection hole. However, the cover glass substrate 250 may not be used or the top of the tapered electrolyte inlet may be sealed in another manner, all of which are within the scope of the present invention.

6 to 8 are steps of the electrolyte injection hole sealing method of the dye-sensitized solar cell according to an embodiment of the present invention.

Referring to FIG. 6, first, an electrolyte injection hole 210 having a tapered structure in which a width thereof decreases downward is disclosed. Here, the lower portion is directed toward the lower substrate 220, which is a counter substrate of the upper substrate 200 on which the electrolyte injection hole 210 is formed, and the width of the electrolyte injection hole 210 in the space where the electrolyte is filled is less than that of the opposite. This is as described above.

Referring to FIG. 7, a cylindrical sealing member 230 having a diameter D greater than or equal to the lower end A of the electrolyte injection hole 210 is fitted, and the sealing member 230 is in the direction of the lower substrate 220. The sealing member 240 protrudes by a predetermined height from the lower end A of the electrolyte injection hole 210.

That is, despite the diameter larger than the hole by using the sealing member 230 having a predetermined elasticity, the sealing member penetrates the hole (electrolyte injection hole lower hole), and after the penetration, the sealing member 230 is elastically Thereby swelling back to its original diameter level. As a result, the sealing member completely seals the lower end of the electrolyte injection hole. The present invention uses a metal or plastic having a predetermined level of elasticity as a material of the sealing member 230.

Referring to FIG. 8, after the sealing member 230 is pressurized and inserted into the electrolyte injection hole, an adhesive filler 240 such as a UV adhesive is filled in the electrolyte injection hole, and the adhesive filler 240 is filled. The electrolyte inlet opening, ie the top inlet, is sealed by a cover glass substrate.

Claims (9)

In the electrolyte injection port sealing device of the dye-sensitized solar cell, the upper substrate and the lower substrate spaced apart at a predetermined interval, facing, the electrolyte is filled between the upper substrate and the lower substrate, the electrolyte injection hole is provided in the upper substrate, The taper is tapered in a shape in which the width is reduced from the lower substrate toward the lower substrate, and a sealing member having a cylinder structure having a width greater than or equal to the minimum width of the lower end of the electrolyte injection hole is inserted into a shape protruding from the lower end of the electrolyte injection hole. The sealing member has an elasticity, and the sealing member protruding by the elasticity of the sealing member is expanded than the lower end of the electrolyte injection hole, sealing the electrolyte injection hole of the dye-sensitized solar cell, characterized in that for sealing the lower end of the electrolyte injection hole. The method of claim 1,
The electrolyte injection port sealing device of the dye-sensitized solar cell, characterized in that the material of the sealing member is plastic or metal. delete delete The method of claim 1,
The electrolyte injection hole is filled with a photocurable adhesive, the electrolyte injection hole sealing apparatus, characterized in that the cover glass substrate is bonded to the upper portion of the electrolyte injection hole. An upper substrate and a lower substrate are spaced at predetermined intervals to face each other, and a sealing method of an electrolyte injection hole of a dye-sensitized solar cell in which an electrolyte is filled between the upper substrate and the lower substrate.
Inserting a cylindrical sealing member having a diameter greater than or equal to the bottom width of the electrolyte injection hole and having an elasticity to a tapered electrolyte injection hole having a taper structure decreasing in width downward; And
The sealing member is pressed toward the lower substrate, and the sealing member protrudes from the lower end of the electrolyte injection hole, wherein the protruding sealing member is extended from the lower end of the electrolyte injection hole by the elasticity of the sealing member, Sealing method of the electrolyte injection hole of the dye-sensitized solar cell characterized in that the sealing. The method according to claim 6,
The sealing member material of the electrolyte injection hole of the dye-sensitized solar cell, characterized in that the metal or plastic. 8. The method of claim 7,
The sealing member is an electrolyte injection hole sealing method of the dye-sensitized solar cell, characterized in that to recover from the lower diameter of the electrolyte injection hole as the protruding from the lower end of the electrolyte injection hole. delete
KR20100067805A 2010-07-14 2010-07-14 device and method for sealing electrolyte injection entrance of dye sensitized solar cell KR101172165B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016204505A1 (en) * 2015-06-16 2016-12-22 주식회사 오리온 Dye-sensitized solar cell

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101592716B1 (en) * 2014-06-27 2016-02-12 현대자동차주식회사 Process for producing solar cell of vehicle roof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016204505A1 (en) * 2015-06-16 2016-12-22 주식회사 오리온 Dye-sensitized solar cell

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