KR101124578B1 - Solar cell module - Google Patents

Solar cell module Download PDF

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Publication number
KR101124578B1
KR101124578B1 KR1020110033852A KR20110033852A KR101124578B1 KR 101124578 B1 KR101124578 B1 KR 101124578B1 KR 1020110033852 A KR1020110033852 A KR 1020110033852A KR 20110033852 A KR20110033852 A KR 20110033852A KR 101124578 B1 KR101124578 B1 KR 101124578B1
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South Korea
Prior art keywords
part
portion
formed
plurality
unit cells
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KR1020110033852A
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Korean (ko)
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양철훈
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주성엔지니어링(주)
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus peculiar to the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02Details
    • H01L31/0224Electrodes
    • H01L31/022408Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus peculiar to the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus peculiar to the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/0445PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
    • H01L31/046PV modules composed of a plurality of thin film solar cells deposited on the same substrate
    • H01L31/0465PV modules composed of a plurality of thin film solar cells deposited on the same substrate comprising particular structures for the electrical interconnection of adjacent PV cells in the module
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The present invention, a support substrate; A plurality of unit cells supported by the support substrate and arranged at predetermined intervals; An electrode leader connected to electrodes of the plurality of unit cells; An electrode connection part connected to the electrode lead part to electrically connect the plurality of unit cells; And an electrode terminal portion for connecting the plurality of unit cells to the outside, wherein the electrode lead-out portion, the electrode connection portion, and the electrode terminal portion are arranged in the same direction in the support substrate. As for the module,
In the solar cell module according to the present invention, the configuration for electrically connecting the plurality of unit cells is unified as a whole, and the appearance is excellent, and the path of such an electrical connection configuration is minimized, thereby minimizing the decrease in the transmittance of the solar cell. There is an advantage that can be.

Description

Solar cell module

The present invention relates to a solar cell module, and more particularly, to a solar cell module having a wide light transmitting area to be used as a substitute for a glass window of a building.

Solar cells are devices that convert light energy into electrical energy using the properties of semiconductors.

The solar cell has a PN junction structure in which a P (positive) type semiconductor and an N (negative) type semiconductor are bonded together. Holes and electrons are generated within the holes, and the holes (+) move toward the P-type semiconductor and the electrons (-) move toward the N-type semiconductor due to the electric field generated in the PN junction. Can be generated to produce power.

Solar cells can be classified into substrate type solar cells and thin film type solar cells. The substrate type solar cell is a solar cell manufactured using a semiconductor material such as silicon as a substrate, and the thin film type solar cell is a solar cell manufactured by forming a semiconductor in the form of a thin film on a substrate such as glass.

Such solar cells are modularized and used for home use or industrial use. Recently, interest in solar cell modules that can be used as a substitute for glass windows in buildings has increased.

In general, the biggest problem for applying the solar cell module to replace the glass window of the building is that the visibility to secure the field of view is insufficient. That is, since the substrate type solar cell uses an opaque wafer, there is almost no light transmissive region, and the thin film type solar cell electrode uses an opaque metal, so the light transmissive region is small. In the solar cell module using the thin-film solar cell, it is difficult to secure a sufficient light transmission area.

On the other hand, in the process of modularizing the solar cell, the light transmission area is significantly reduced. That is, in order to modularize a solar cell, a plurality of unit cells must be electrically connected, and a light transmission area can be reduced in the process of electrically connecting such unit cells.

The present invention has been devised to solve the above-described problems, and an object of the present invention is to provide a solar cell module having a light transmitting area sufficient to be applied as a glass window substitute.

The present invention, in order to achieve the above object, a support substrate; A plurality of unit cells supported by the support substrate and arranged at predetermined intervals; An electrode leader connected to electrodes of the plurality of unit cells; An electrode connection part connected to the electrode lead part to electrically connect the plurality of unit cells; And an electrode terminal portion for connecting the plurality of unit cells to the outside, wherein the electrode lead-out portion, the electrode connection portion, and the electrode terminal portion are arranged in the same direction in the support substrate. Provide a module.

The electrode connection part may be formed to be aligned with the electrode lead-out part in the support substrate.

The electrode terminal part may be formed in a line with the electrode lead-out part in the support substrate.

The electrode connection unit may include a parallel connection unit for connecting some unit cells of the plurality of unit cells in parallel and a series connection unit for connecting some unit cells of the plurality of unit cells in series. In this case, the parallel connection part is formed to be in line with the electrode lead-out part, and the series connection part is formed on the first and second parts formed to be in line with the electrode lead-out part, and outside of the support substrate. It may be composed of a third portion connecting the first portion and the second portion, wherein the electrode terminal portion is composed of one positive terminal portion and the negative terminal portion, each of the one positive terminal portion and the negative terminal portion is the electrode lead-out portion and parallel connection portion It may be formed to be in line with the.

The electrode connection part may be formed as a parallel connection part for connecting the plurality of unit cells in parallel. In this case, the electrode terminal portion may include a plurality of positive electrode terminal portions and a negative electrode terminal portion, and each of the plurality of positive electrode terminal portions and the negative electrode terminal portion may be formed to line up with the electrode lead-out portion and the parallel connection portion.

The electrode connection part may be formed as a series connection part for connecting the plurality of unit cells in series. In this case, the series connection part includes a first series connection part and a second series connection part, the first series connection part is formed to be in line with the electrode lead-out part, and the second series connection part is aligned with the electrode lead-out part. And a third portion formed outside the support substrate to connect the first portion and the second portion, wherein the electrode terminal portion includes one positive terminal portion and one negative terminal portion. Each of the one positive terminal portion and the negative terminal portion may be formed to be in line with the electrode lead-out portion.

The electrode lead-out part, the electrode connection part, and the electrode terminal part may be formed on the rear surfaces of the plurality of unit cells.

The support substrate may include a front support substrate formed on the front surface of the plurality of unit cells and a back support substrate formed on the rear surface of the plurality of unit cells, and to fix the plurality of unit cells to the support substrate. An adhesive layer may be formed between a plurality of unit cells and the support substrate.

The support substrate may be formed on a front surface or a rear surface of a plurality of solar cell modules, and an adhesive layer may be formed between the plurality of unit cells and the support substrate in order to fix the plurality of unit cells to the support substrate.

The insulating substrate is further formed behind the supporting substrate, and the supporting substrate and the insulating substrate may be spaced apart from each other by spacers so that a predetermined space is formed between the supporting substrate and the insulating substrate.

The solar cell module according to the present invention as described above, the configuration for electrically connecting a plurality of unit cells is unified as a whole, the appearance is excellent, and the path of such an electrical connection configuration is minimized, the transmittance of the solar cell There is an advantage that the reduction can be minimized.

1 is a schematic plan view of a solar cell module according to a first embodiment of the present invention.
2 is a schematic plan view of a solar cell module according to a second embodiment of the present invention.
3 is a schematic plan view of a solar cell module according to a third embodiment of the present invention.
4 is a schematic plan view of a solar cell module according to a fourth embodiment of the present invention.
5 is a schematic plan view of a solar cell module according to a fifth embodiment of the present invention.
6 is a schematic plan view of a solar cell module according to a sixth embodiment of the present invention.
7 is a schematic plan view of a solar cell module according to a seventh embodiment of the present invention.
8 is a schematic plan view of a solar cell module according to an eighth embodiment of the present invention.
9 is a schematic cross-sectional view of a solar cell module according to a ninth embodiment of the present invention.
10 is a schematic cross-sectional view of a solar cell module according to a tenth embodiment of the present invention.
11 is a schematic cross-sectional view of a solar cell module according to an eleventh embodiment of the present invention.
12 is a schematic cross-sectional view of a solar cell module according to a twelfth embodiment of the present invention.
13 is a schematic cross-sectional view of a solar cell module according to a thirteenth embodiment of the present invention.
14 is a schematic cross-sectional view of a solar cell module according to a fourteenth embodiment of the present invention.
15 is a schematic cross-sectional view of a solar cell module according to a fifteenth embodiment of the present invention.
16 is a schematic cross-sectional view of a solar cell module according to a sixteenth embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1 to 8 are schematic plan views of a solar cell module according to various embodiments of the present disclosure, which illustrate various methods of electrically connecting a plurality of unit cells. Hereinafter, each will be described.

1 is a schematic plan view of a solar cell module according to a first embodiment of the present invention.

As can be seen in Figure 1, the solar cell according to the first embodiment of the present invention comprises a support substrate 10 and a plurality of unit cells (1, 2, 3, 4).

The support substrate 10 serves to support the plurality of unit cells 1, 2, 3, and 4, and is made of a transparent material such as glass.

The support substrate 10 may be disposed in a pair on the front and rear surfaces of the plurality of unit cells 1, 2, 3, and 4, but is not necessarily limited thereto. The plurality of unit cells 1 , 2, 3, 4) may be located only on the front or rear.

In addition, an adhesive layer such as an EVA film may be formed between the support substrate 10 and the plurality of unit cells 1, 2, 3, and 4, but is not limited thereto. A detailed configuration between the support substrate 10 and the plurality of unit cells 1, 2, 3, and 4 will be described later.

Each of the plurality of unit cells 1, 2, 3, and 4 is formed of a unit solar cell, and such a unit solar cell is preferably a thin film solar cell having a relatively good transmittance rather than a substrate type solar cell. The thin film solar cell may have a see-through area therein in view of transmittance of the solar cell module.

The plurality of unit cells 1, 2, 3, and 4 are predetermined on the support substrate 10 in a first direction (eg, a vertical direction) and in a second direction different from the first direction (eg, a horizontal direction). They are arranged at intervals of. That is, the plurality of unit cells 1, 2, 3, and 4 are arranged in a matrix form at predetermined intervals on the support substrate 10.

Although only the first unit cell 1, the second unit cell 2, the third unit cell 3, and the fourth unit cell 4 are arranged in the counterclockwise direction, the number of unit cells may vary. can be changed.

Each of the unit cells 1, 2, 3, and 4 should be electrically connected to each other. In this case, the transmittance of sunlight in the process of electrically connecting the respective unit cells 1, 2, 3, and 4 It is necessary to minimize the reduction, and in addition, it is necessary to minimize the deterioration of the appearance quality of the solar cell module by the electrical connection line. Hereinafter, the solar cell module according to the present invention will be described how to minimize the decrease in transmittance and appearance quality degradation.

Each unit cell (1, 2, 3, 4) has a positive electrode (+) and a negative electrode (-), in the case of a general thin film solar cell, the positive electrode (+) is made of a transparent metal oxide such as ITO The cathode (-) is made of a metal such as Al. In this case, the electrode lead portions 11, 12, 21, 22, 31, 32, 41, and 42, such as conductive wires, may be connected to the anode (+) and the cathode (−), respectively.

That is, as illustrated, the first anode lead portion 11 is connected to the anode (+) of the first unit cell 1, and the first cathode lead is drawn out to the cathode (−) of the first unit cell 1. The part 12 is connected. Similarly, the second positive electrode lead-out part 21 and the second negative electrode lead-out part 22 are connected to the positive electrode (+) and the negative electrode (-) of the second unit cell 2, respectively, and the third unit cell 3 is connected. The positive electrode (+) and the negative electrode (−) of the third positive electrode lead-out portion 31 and the third negative electrode lead-out portion 32 are connected, respectively, the positive electrode (+) and the negative electrode (−) of the fourth unit cell (4) ) Is connected to the fourth positive electrode lead-out portion 41 and the fourth negative electrode lead-out portion 42, respectively.

Each of the first and fourth unit cells 1 to 4 has a positive electrode (+) on the left side and a negative electrode (−) on the right side, and thus, a first unit connected to the positive electrode (+). The fourth to fourth cathode lead portions 11, 21, 31, and 41 are positioned at the left side, and the first to fourth cathode lead portions 12, 22, 32, and 42 connected to the cathode (−) are positioned at the right side.

On the other hand, each of the first unit cells (1) to the fourth unit cell (4) is disposed so that the positive electrode (+) is located on the right side and the negative electrode (-) on the left side, the first to the first to be connected to the positive electrode (+) The fourth cathode lead portions 11, 21, 31, and 41 may be positioned at the right side, and the first to fourth cathode lead portions 12, 22, 32, and 42 connected to the cathode (−) may be positioned at the left side. .

In this case, the first to fourth cathode lead portions 11, 21, 31, and 41 and the first to fourth cathode lead portions 12, 22, 32, and 42 are all in a first direction, for example, in a vertical direction. Arranged uniformly to give an overall unified appearance.

As described above, the first to fourth cathode lead portions 11, 21, 31, and 41, and the first to fourth cathode lead portions 12, 22, 32, and 42 may have predetermined electrode connections 110, 120, and 130. The first unit cell 1 to the fourth unit cell 4 are electrically connected to each other.

More specifically, the unit cells arranged in the first direction (vertical direction) are connected in parallel with each other, and the unit cells arranged in the second direction (horizontal direction) are connected in series with each other. That is, the first unit cell 1 and the second unit cell 2 are connected in parallel with each other, and the third unit cell 3 and the fourth unit cell 4 are also connected in parallel with each other. The first and second unit cells 1 and 2 and the third and fourth unit cells 3 and 4 are connected in series with each other.

For this electrical connection, the first positive electrode lead-out portion 11 and the second positive electrode lead-out portion 21 are connected to each other by the parallel connection between the anodes 110, the first negative electrode lead portion 12 and the second negative electrode The lead portion 22 is connected to each other by the parallel connection between the negative electrode 120. In this case, the first positive electrode lead-out portion 11, the second positive electrode lead-out portion 21, and the parallel connecting portion 110 between the positive poles are formed in a straight line, and the first negative electrode lead-out portion 12 and the second negative electrode are similarly formed. The lead part 22 and the parallel connection part 120 between the cathodes are also formed to form a straight line, thereby exhibiting a uniform appearance formed in a straight line in the longitudinal direction as a whole.

Similarly, the third positive electrode drawing part 31 and the fourth positive electrode drawing part 41 are connected to each other by the parallel connecting part 110 between the positive electrodes, and the third negative electrode drawing part 32 and the fourth negative electrode drawing part 42 ) Are connected to each other by a parallel connection 120 between the cathodes. In this case, the third positive electrode lead-out portion 31, the fourth positive electrode lead-out portion 41, and the parallel connecting portion 110 between the positive poles are formed in a straight line, and similarly, the third negative electrode lead-out portion 32 and the fourth negative electrode The lead portion 42 and the negative electrode parallel connection portion 120 are also formed to form a straight line, thereby exhibiting a uniform appearance formed in a straight line in the longitudinal direction as a whole.

Meanwhile, the second cathode lead portion 22 and the third anode lead portion 31 are connected to each other by the series connection unit 130. In this case, the series connection part 130 may include a first part 131 connected to the second cathode drawing part 22, a second part 132 connected to the third cathode drawing part 31, and the first part. And a third portion 133 connecting the 131 and the second portion 132. In particular, the first portion 131 is formed to be in line with the second cathode lead-out portion 22, and the second portion 132 is formed to be in line with the third anode lead-out portion 31, The third portion 133 is formed outside the support substrate 10 so as not to harm the unified appearance formed in the longitudinal direction as a whole.

That is, in order to connect in series between the second cathode lead portion 22 and the third anode lead portion 31, it is impossible to form the connection structure in the vertical direction structurally, in which case the overall appearance is unified. Inevitably, in the present invention, the first portion 131 and the second portion 132 are formed in the vertical direction, and the first portion 131 and the second portion 132 are external to the support substrate 10. By connecting through the third portion 133, it is possible to improve the light transmittance with it without harming the overall unified appearance.

On the other hand, instead of connecting in series between the second cathode lead portion 22 and the third anode lead portion 31 in series, between the first cathode lead portion 12 and the fourth anode lead portion 41 in series. When connected to the same serial connection effect can be obtained, and in this case, it is preferable to configure the serial connection so that the light transmittance can be improved without compromising the overall unified appearance as described above.

As described above, the first to fourth unit cells 1, 2, 3, and 4 are connected in series and in parallel with each other, and additionally, electrode terminal parts 210 and 220 are formed to connect them to the outside. do.

Specifically, the positive terminal portion 210 and the negative terminal portion 220 is formed, as shown, the positive terminal portion 210 is connected to the second positive lead-out portion 21, the negative terminal portion 220 Is connected to the third cathode lead portion 32.

In particular, the positive electrode terminal portion 210 is formed to be in line with the second positive electrode lead-out portion 21, and thus, the first positive electrode lead-out portion 11, the second positive electrode lead-out portion 21, and a parallel connection between the positive poles 110 and the positive electrode terminal portion 210 are formed to form a straight line to show a uniform unified appearance in a vertical direction as a whole. In addition, the first anode lead portion 11, the second anode lead portion 21, the parallel connecting portion 110 between the anode and the anode terminal portion 210 formed to form a straight line may be made of the same conductive material. It may be made of a conductive wire.

In addition, the negative electrode terminal part 220 is formed to be in line with the third negative electrode drawing part 32, and thus, the third negative electrode drawing part 32, the fourth negative electrode drawing part 42, and the parallel connection part between the negative electrodes. 120, and the negative electrode terminal portion 220 are formed to form a straight line to show a uniform unified appearance in a vertical direction as a whole. In addition, the third negative electrode lead-out portion 32, the fourth negative electrode lead-out portion 42, the negative electrode parallel connection portion 120, and the negative electrode terminal portion 220 formed to form a straight line may be made of the same conductive material. It may be made of one conductive wire.

In the solar cell module according to the first embodiment of the present invention described above, the configuration for electrically connecting the plurality of unit cells 1, 2, 3, 4 is unified as a whole, and the appearance is excellent. Since the path of the electrical connection configuration, such as minimization of the solar cell transmittance is minimized, in particular, the third portion 133 of the series connection 130 for the series connection between the unit cells supporting the substrate 10 By forming on the outside of the) there is an effect that can reduce the decrease in transmittance without harming the overall appearance.

FIG. 2 is a schematic plan view of a solar cell module according to a second embodiment of the present invention, in which the arrangement of the third unit cell 3 and the fourth unit cell 4 is changed in the first embodiment. That is, in the case of the first unit cell 1 and the second unit cell 2 corresponding to the first column, the positive electrode (+) is disposed on the left side and the negative electrode (-) is positioned on the right side as in the first embodiment. On the other hand, in the case of the third unit cell 3 and the fourth unit cell 4 corresponding to the second column, the cathode (-) is positioned on the left side and the anode (+) is positioned on the right side, unlike the first embodiment. It is arranged to. In the following, repeated description of the same configuration as in the above-described first embodiment will be omitted.

As can be seen in FIG. 2, the first unit cell 1 and the second unit cell 2 are connected in parallel with each other, and the third unit cell 3 and the fourth unit cell 4 are also connected in parallel with each other. The first and second unit cells 1 and 2 and the third and fourth unit cells 3 and 4 are connected in series with each other.

For this electrical connection, the first positive electrode lead-out portion 11 and the second positive electrode lead-out portion 21 are connected to each other by the parallel connection between the anodes 110, the first negative electrode lead portion 12 and the second negative electrode The lead portion 22 is connected to each other by the parallel connection between the negative electrode 120.

Similarly, the third positive electrode drawing part 31 and the fourth positive electrode drawing part 41 are connected to each other by the parallel connecting part 110 between the positive electrodes, and the third negative electrode drawing part 32 and the fourth negative electrode drawing part 42 ) Are connected to each other by a parallel connection 120 between the cathodes.

Meanwhile, the first cathode lead portion 12 and the fourth anode lead portion 41 are connected to each other by the series connection unit 130. In this case, the series connection part 130 may include a first part 131 connected to the first cathode drawing part 12, a second part 132 connected to the fourth anode drawing part 41, and the first part. The third portion 133 is formed outside the support substrate 10 while connecting the 131 and the second portion 132.

In addition, the positive electrode terminal portion 210 is connected to the second positive electrode drawing portion 21, and the negative electrode terminal portion 220 is connected to the third negative electrode drawing portion 32.

As in the second embodiment of the present invention as described above, the configuration for electrically connecting the plurality of unit cells 1, 2, 3, and 4 is unified as a whole, and the appearance is excellent. In addition, there is an advantage that the path of such an electrical connection configuration can be minimized to minimize the decrease in transmittance of the solar cell. In particular, the third part 133 of the series connection 130 for serial connection between unit cells is supported. Forming on the outside of the substrate 10 has an effect of reducing the decrease in transmittance without harming the overall appearance.

Meanwhile, in the second embodiment, instead of connecting the first cathode lead portion 12 and the fourth anode lead portion 41 in series, the second cathode lead portion 22 and the third anode lead portion ( 31 may be connected in series. In this case, the negative terminal 220 may be connected to the fourth negative lead 42.

FIG. 3 is a schematic plan view of a solar cell module according to a third embodiment of the present invention, which is the first / second unit cell 1 and 2 and the third / fourth embodiment in the above-described first embodiment. The serial connection between the unit cells 3 and 4 is not adopted. That is, the first unit cell 1 and the second unit cell 2 are connected in parallel with each other, and the third unit cell 3 and the fourth unit cell 4 are also connected in parallel with each other. Multiple parallel connection configurations are formed. In the following, repeated description of the same configuration as in the above-described first embodiment will be omitted.

As can be seen in FIG. 3, the first unit cell 1 and the second unit cell 2 are connected in parallel to each other, and for this parallel connection, the first positive electrode lead-out unit 11 and the second positive electrode lead-out The unit 21 is connected to each other by the parallel connecting part 110 between the anodes, and the first cathode drawing part 12 and the second cathode drawing part 22 are connected to each other by the parallel connecting part 120 between the cathodes. In addition, the positive electrode terminal part 210 is connected to the second positive electrode drawing part 21, and the negative electrode terminal part 220 is connected to the second negative electrode drawing part 22 to complete a parallel connection configuration. Of course, the positive terminal 210 may be connected to the first positive electrode lead 11, and the negative terminal 220 may be connected to the first negative lead 12.

In addition, the third unit cell 3 and the fourth unit cell 4 are connected to each other in parallel, and for such a parallel connection, the third positive electrode lead-out unit 31 and the fourth positive electrode lead-out unit 41 are The anodes are connected to each other by the parallel connection unit 110, and the third cathode lead portion 32 and the fourth cathode lead portion 42 are connected to each other by the anode parallel connection portion 120. In addition, the positive electrode terminal portion 210 is connected to the third positive electrode drawing portion 31, and the negative electrode terminal portion 220 is connected to the third negative electrode drawing portion 32 to complete another parallel connection configuration. Of course, the positive electrode terminal portion 210 may be connected to the fourth positive electrode lead-out portion 41 and the negative electrode terminal portion 220 may be connected to the fourth negative electrode lead-out portion 42.

As in the third embodiment of the present invention as described above, the configuration for electrically connecting the plurality of unit cells 1, 2, 3, and 4 is unified as a whole, and the appearance is excellent. In addition, there is an advantage that the path of such an electrical connection configuration can be minimized to minimize the decrease in transmittance of the solar cell.

4 is a schematic plan view of a solar cell module according to a fourth embodiment of the present invention, in which the arrangement of the third unit cell 3 and the fourth unit cell 4 is changed in the above-described third embodiment. That is, in the case of the first unit cell 1 and the second unit cell 2 corresponding to the first column, the positive electrode (+) is disposed on the left side and the negative electrode (-) is positioned on the right side as in the third embodiment. On the other hand, in the case of the third unit cell 3 and the fourth unit cell 4 corresponding to the second column, the cathode (-) is positioned on the left side and the anode (+) is positioned on the right side, unlike the third embodiment. Since it is arranged so as to be identical with that of the third embodiment described above, repeated description thereof will be omitted.

5 is a schematic plan view of a solar cell module according to a fifth embodiment of the present invention, in which a plurality of unit cells 1, 2, 3, and 4 are all connected in series. In the following, repeated description of the same configuration as the above-described embodiments will be omitted.

As can be seen in FIG. 5, in the case of the first unit cell 1 and the fourth unit cell 4 constituting the first row, the anode (+) is disposed on the left side and the cathode (−) is disposed on the right side. In the case of the second unit cell 2 and the third unit cell 3 constituting the second row, the cathode (-) is disposed on the left side and the anode (+) on the right side.

The second unit cell 2 is connected in series with the first unit cell 1, and for this purpose, the second negative electrode drawing part 22 and the first positive electrode drawing part 11 are connected to the first series connection part 130a. Are connected to each other by Here, the second cathode lead portion 22, the first anode lead portion 11, and the first series connection portion 130a are formed to form a straight line, thereby showing a uniform appearance as a whole, and in particular, the second cathode lead portion The portion 22, the first anode lead portion 11, and the series connection portion 130 may be formed of one conductive wire.

In addition, the first unit cell 1 is connected to the fourth unit cell 4 in series. For this purpose, the first negative electrode drawing part 12 and the fourth positive electrode drawing part 41 are connected to the second series connection part. Are connected to each other by 130b. Here, the second series connection part 130b includes a first part 131 connected to the first cathode lead part 12, a second part 132 connected to the fourth anode lead part 41, and the first part. By forming the third portion 133 formed on the outside of the support substrate 10 while connecting the portion 131 and the second portion 132, the decrease in transmittance can be reduced without harming the overall appearance.

In addition, the fourth unit cell 4 is connected in series with the third unit cell 3, and for this purpose, the fourth negative electrode drawing part 42 and the third positive electrode drawing part 31 are connected to the first series connection part. Are connected to each other by 130a. Here, the fourth negative electrode drawing part 42, the third positive electrode drawing part 31, and the first series connection part 130a are formed to form a straight line, thereby exhibiting an overall unified appearance, and in particular, the fourth negative electrode drawing part The portion 42, the third anode lead portion 31, and the series connection portion 130 may be formed of one conductive wire.

As such, between the first row and the second row, that is, between the first unit cell 1 and the second unit cell 2, and between the third unit cell 3 and the fourth unit cell 4 are vertical. Connected by a first series connection unit 130a arranged in a direction, and between the first column and the second column, that is, between the first unit cell 1 and the fourth unit cell 4, the first portion 131, It is connected by a second series connection 130b consisting of a second portion 132 and a third portion 133.

In addition, the positive electrode terminal portion 210 is connected to the second positive electrode drawing portion 21, and the negative electrode terminal portion 220 is connected to the third negative electrode drawing portion 32. Here, the positive electrode terminal portion 210 and the second positive electrode lead-out portion 21 may be formed to form a straight line, such as using a single conductive wire, the negative terminal portion 220 and the third negative electrode lead portion 32 also It can be formed to form a straight line such as using one conductive wire.

As in the fifth embodiment of the present invention as described above, the configuration for electrically connecting the plurality of unit cells 1, 2, 3, and 4 is unified as a whole, and the appearance is excellent. In addition, there is an advantage that the path of such an electrical connection configuration is minimized to minimize the decrease in transmittance of the solar cell, and in particular, the overall transmittance is improved as compared with the first embodiment.

Meanwhile, in the fifth embodiment, the positive electrode terminal portion 210 may be connected to the fourth positive electrode lead-out portion 41, and the negative electrode terminal portion 220 may be connected to the first negative electrode lead-out portion 12. The positive electrode lead-out unit 21 and the third negative electrode lead-out unit 32 may be connected through the second series connection unit 130b.

6 is a schematic plan view of a solar cell module according to a sixth embodiment of the present invention, in which the arrangement of the third unit cell 3 and the fourth unit cell 4 is changed in the fifth embodiment. That is, the first unit cell 1 and the second unit cell 2 corresponding to the first column are arranged in the same manner as in the fifth embodiment, whereas the third unit cell 3 corresponding to the second column and In the case of the fourth unit cell 4, the third unit cell 3 is disposed differently from the fifth embodiment, and the third unit cell 3 is disposed such that a positive electrode (+) is positioned on the left side and a negative electrode (−) is positioned on the right side. The four unit cells 4 are arranged such that the negative electrode (-) is positioned at the left side and the positive electrode (+) is positioned at the right side. Other than that is the same as the fifth embodiment described above, repeated description will be omitted.

FIG. 7 is a schematic plan view of a solar cell module according to a seventh embodiment of the present invention, in which a plurality of unit cells 1, 2, 3, and 4 are all connected in series.

As shown in FIG. 7, in the case of the first unit cell 1 and the fourth unit cell 4 constituting the first row, the anode (+) is disposed on the left side and the cathode (−) is disposed on the right side. In the case of the second unit cell 2 and the third unit cell 3 constituting the second row, the cathode (-) is disposed on the left side and the anode (+) on the right side.

The first unit cell 1 is connected in series with the fourth unit cell 4, and for this purpose, the first negative electrode drawing part 12 and the fourth positive electrode drawing part 41 are connected to the second series connecting part 130b. Are connected to each other by Here, the second series connection part 130b includes a first part 131 connected to the first cathode lead part 12, a second part 132 connected to the fourth anode lead part 41, and the first part. The third portion 133 is formed outside the support substrate 10 while connecting the portion 131 and the second portion 132.

In addition, the fourth unit cell 4 is connected in series with the third unit cell 3, and for this purpose, the fourth negative electrode drawing part 42 and the third positive electrode drawing part 31 are connected to the first series connection part. Are connected to each other by 130a. Here, the fourth negative electrode drawing part 42, the third positive electrode drawing part 31, and the first series connection part 130a are formed to form a straight line, thereby exhibiting an overall unified appearance, and in particular, the fourth negative electrode drawing part The portion 42, the third anode lead portion 31, and the first series connection portion 130a may be formed of one conductive wire.

In addition, the third unit cell 3 is connected in series with the second unit cell 2, and for this purpose, the third negative electrode lead-out unit 32 and the second positive electrode lead-out unit 21 are connected to the second series. Are connected to each other by 130b. Here, the second series connection part 130b may include a first part 131 connected to the third negative electrode drawing part 32, a second part 132 connected to the second positive electrode drawing part 21, and the first portion. The third portion 133 is formed outside the support substrate 10 while connecting the portion 131 and the second portion 132.

As such, between the first row and the second row, that is, between the third unit cell 3 and the fourth unit cell 4, are connected by the first series connection unit 130a arranged in the vertical direction. Between the column and the second column, that is, between the first unit cell 1 and the fourth unit cell 4, and between the second unit cell 2 and the third unit cell 3, the first portion 131, It is connected by a second series connection 130b consisting of a second portion 132 and a third portion 133.

In addition, the positive electrode terminal portion 210 is connected to the first positive electrode lead-out portion 11, and the negative electrode terminal portion 220 is connected to the second negative electrode lead-out portion 22. Here, the positive electrode terminal portion 210 and the first positive electrode lead-out portion 11 may be formed to form a straight line, such as to use a single conductive wire, the negative terminal portion 220 and the second negative electrode lead-out portion 22 also It can be formed to form a straight line such as using one conductive wire.

As in the seventh embodiment of the present invention as described above, the configuration for electrically connecting the plurality of unit cells 1, 2, 3, and 4 is unified as a whole, and the appearance is excellent. In addition, there is an advantage that the path of such an electrical connection configuration is minimized to minimize the decrease in transmittance of the solar cell, and in particular, the overall transmittance is improved as compared with the first embodiment.

Meanwhile, in the seventh exemplary embodiment, the positive electrode terminal portion 210 may be connected to the third positive electrode lead-out portion 31, and the negative electrode terminal portion 220 may be connected to the fourth negative electrode lead-out portion 42. The first positive electrode lead-out unit 11 and the second negative electrode lead-out unit 32 may be connected through the first series connection unit 130a.

8 is a schematic plan view of a solar cell module according to an eighth embodiment of the present invention, in which the arrangement of the third unit cell 3 and the fourth unit cell 4 is changed in the seventh embodiment. That is, the first unit cell 1 and the second unit cell 2 corresponding to the first column are arranged in the same manner as in the seventh embodiment, whereas the third unit cell 3 corresponding to the second column and In the case of the fourth unit cell 4, the third unit cell 3 is disposed differently from the seventh embodiment, and the third unit cell 3 is disposed such that an anode (+) is positioned on the left side and a cathode (−) is positioned on the right side. The four unit cells 4 are arranged such that the negative electrode (-) is positioned at the left side and the positive electrode (+) is positioned at the right side. Other than that is the same as the seventh embodiment described above, repeated description will be omitted.

9 to 16 are schematic cross-sectional views of a solar cell module according to various embodiments of the present disclosure, which show various coupling states between a support substrate and a plurality of unit cells. Hereinafter, each will be described.

9 is a schematic cross-sectional view of a solar cell module according to a ninth embodiment of the present invention.

As can be seen in FIG. 9, the solar cell according to the ninth embodiment of the present invention includes a pair of support substrates 10a and 10b, a plurality of unit cells 1 and 2, and an adhesive layer 400. Is done.

The support substrates 10a and 10b support the plurality of unit cells 1 and 2. The supporting substrates 10a and 10b are formed on the front surface of the plurality of unit cells 1 and 2 and the rear surface formed on the rear surface of the plurality of unit cells 1 and 2. It consists of the support substrate 10b.

The front support substrate 10a may be formed to be in direct contact with the plurality of unit cells 1 and 2, and the rear support substrate 10b may be formed to be in contact with the adhesive layer 400.

The adhesive layer 400 is formed between the plurality of unit cells 1 and 2 and the support substrates 10a and 10b, thereby supporting the plurality of unit cells 1 and 2 with the support substrates 10a and 10b. It is fixed to). The adhesive layer 400 may use an adhesive material known in the art such as an EVA film.

The plurality of unit cells 1 and 2 may be arranged in a matrix form on the support substrates 10a and 10b, particularly the front support substrate 10a. 2) may be electrically connected to each other through a connection line (L), such as a predetermined wire (wire).

The connection line (L) is formed on the rear of the plurality of unit cells (1, 2), its specific configuration can be changed in various forms shown in the above-described Figs. For example, as illustrated in FIG. 1, the connection line L may include a first anode lead-out part 11, a second anode lead-out part 21, an inter-polar parallel connection part 110, and an anode terminal part 210. ) May be formed of one wire formed to form a straight line.

Although not shown, a frame may be separately coupled to the peripheral portions of the support substrates 10a and 10b.

In the solar cell module according to the ninth embodiment, a plurality of unit cells 1 and 2 and their connection lines L are formed on the front support substrate 10a, and an adhesive layer 300 is formed thereon. And it can obtain through the process of forming the back support substrate 10b on it.

FIG. 10 is a schematic cross-sectional view of a solar cell module according to a tenth exemplary embodiment of the present invention, in which a plurality of unit cells 1 and 2 are arranged in a matrix on a rear support substrate 10b.

That is, according to the tenth embodiment of the present invention illustrated in FIG. 10, a connection line L for electrical connection between a plurality of unit cells 1 and 2 is formed on the rear support substrate 10b. An adhesive layer 300 is formed between the plurality of unit cells 1 and 2 and the front support substrate 10a, and the solar cell module according to the ninth embodiment of the present invention shown in FIG. same. Therefore, repeated description of the same configuration will be omitted.

In the solar cell module according to the tenth embodiment, the plurality of unit cells 1 and 2 and their connection lines L are formed on the rear support substrate 10b and the adhesive layer 300 is formed thereon. And it can obtain through the process of forming the front support substrate 10a on it.

11 is a schematic cross-sectional view of a solar cell module according to an eleventh embodiment of the present invention, in which a plurality of unit cells 1 and 2 and their connection lines L are formed of a front support substrate 10a and a rear support substrate. It is arranged without contacting (10b).

That is, according to the eleventh embodiment of the present invention illustrated in FIG. 11, an adhesive layer 300 is formed between the front support substrate 10a and the back support substrate 10b, and is formed at the center of the adhesive layer 300. A plurality of unit cells 1 and 2 and their connection lines L are formed.

In the solar cell module according to the eleventh embodiment, the adhesive layer 300 is formed on the front support substrate 10a, and the plurality of unit cells 1 and 2 and their connection lines L are formed thereon. In addition, the adhesive layer 300 may be formed thereon, and the rear support substrate 10b may be formed thereon.

FIG. 12 is a schematic cross-sectional view of a solar cell module according to a twelfth embodiment of the present invention, such that the plurality of unit cells 1 and 2 and their connection lines L are supported only by the rear support substrate 10b. Formed.

That is, according to the twelfth embodiment of the present invention illustrated in FIG. 12, the adhesive layer 300 is formed on the rear support substrate 10b, and the plurality of unit cells 1 and 2 are formed on the adhesive layer 300. ) And their connection lines L are formed. In particular, the connection line L is formed to contact the adhesive layer 300.

In the solar cell module according to the twelfth embodiment, the adhesive layer 300 is formed on the back support substrate 10b, and the plurality of unit cells 1 and 2 and their connection lines L are formed thereon. It can be obtained through the process.

FIG. 13 is a schematic cross-sectional view of a solar cell module according to a thirteenth embodiment of the present invention, which is the first embodiment of the present invention shown in FIG. 9 except that a heat insulating substrate 400 and a spacer 450 are further formed. Same as the solar cell module according to the ninth embodiment. Therefore, hereinafter, only the configuration different from the ninth embodiment will be described.

As can be seen in Figure 13, in the solar cell module according to the thirteenth embodiment of the present invention, the heat insulating substrate 400 is further formed behind the rear support substrate (10b). The insulating substrate 400 is spaced apart from the rear support substrate 10b by a spacer 450 formed at the periphery of the rear support substrate 10b.

The thermal insulation substrate 400 may be made of a transparent substrate such as glass.

The spacer 450 serves to space the insulation substrate 400 away from the rear support substrate 10b and to fix the insulation substrate 400 to the rear support substrate 10b.

Since the rear support substrate 10b and the heat insulating substrate 400 are spaced apart from each other by the spacer 450, a predetermined space S is formed between the rear support substrate 10b and the thermal insulation substrate 400. It can be formed, and by such a predetermined space (S) the solar cell module can perform a heat insulation function.

The predetermined space S formed between the rear support substrate 10b and the heat insulating substrate 400 may be filled with air, but in some cases, may be filled with an inert gas.

FIG. 14 is a schematic cross-sectional view of a solar cell module according to a fourteenth exemplary embodiment of the present invention, which is the first embodiment of the present invention shown in FIG. Same as the solar cell module according to the tenth embodiment. Since a detailed configuration of the heat insulating substrate 400 and the spacer 450 is the same as in FIG. 13, the repeated description thereof will be omitted.

FIG. 15 is a schematic cross-sectional view of a solar cell module according to a fifteenth embodiment of the present invention, which is an embodiment of the present invention shown in FIG. 11 is the same as the solar cell module according to the embodiment. Since a detailed configuration of the heat insulating substrate 400 and the spacer 450 is the same as in FIG. 13, the repeated description thereof will be omitted.

FIG. 16 is a schematic cross-sectional view of a solar cell module according to a sixteenth exemplary embodiment of the present invention, which is the first embodiment of the present invention shown in FIG. 12 except that the insulation substrate 400 and the spacer 450 are further formed. 12 is the same as the solar cell module according to the embodiment. Since a detailed configuration of the heat insulating substrate 400 and the spacer 450 is the same as in FIG. 13, the repeated description thereof will be omitted.

1, 2, 3, 4: 1st, 2nd, 3rd, 4th unit cell
10, 10a, 10b: support substrate, front support substrate, back support substrate
11, 21, 31, 41: 1st, 2nd, 3rd, 4th anode drawing part
12, 22, 32, and 42: first, second, third, fourth cathode lead-out portion
110: parallel connection between the anodes, 120: parallel connection between the cathodes
130, 130a, 130b: series connection, first series connection, second series connection
131, 132, and 133: first part, second part and third part of the serial connection
210: positive terminal portion 220: negative terminal portion
300: adhesive layer 400: heat insulating substrate
450: spacer

Claims (15)

  1. Support substrates;
    A plurality of unit cells supported by the support substrate and arranged at predetermined intervals;
    An electrode leader connected to electrodes of the plurality of unit cells;
    An electrode connection part connected to the electrode lead part to electrically connect the plurality of unit cells; And
    It comprises an electrode terminal for connecting the plurality of unit cells to the outside,
    In this case, the electrode lead-out portion, the electrode connecting portion and the electrode terminal portion are arranged in the same direction in the support substrate,
    And the electrode lead-out part, the electrode connection part, and the electrode terminal part are formed on the same surface of each of the plurality of unit cells.
  2. The method of claim 1,
    The electrode connection unit is a solar cell module, characterized in that formed in line with the electrode lead-out portion in the support substrate.
  3. The method of claim 1,
    And the electrode terminal portion is formed to be aligned with the electrode lead-out portion in the support substrate.
  4. The method of claim 1,
    The electrode connection unit comprises a parallel connection for connecting some of the unit cells of the plurality of unit cells in parallel and a series connection for connecting some of the unit cells of the plurality of unit cells in series Battery module.
  5. The method of claim 4, wherein
    The parallel connection part is formed to be in line with the electrode lead-out part,
    The series connection part may include a first part and a second part formed in a line with the electrode lead-out part, and a third part formed outside the support substrate to connect the first part and the second part. Solar module.
  6. The method of claim 4, wherein
    The electrode terminal portion is composed of one positive electrode terminal portion and the negative terminal portion, each one of the positive electrode terminal portion and the negative electrode terminal portion is characterized in that formed in a line with the electrode lead-out portion and the parallel connection portion.
  7. The method of claim 1,
    The electrode connection unit is a solar cell module, characterized in that consisting of a parallel connection for connecting the plurality of unit cells in parallel.
  8. The method of claim 7, wherein
    The electrode terminal portion is composed of a plurality of positive terminal portion and the negative terminal portion, each of the plurality of positive terminal portion and the negative terminal portion is a solar cell module, characterized in that formed in line with the electrode lead-out portion and the parallel connection portion.
  9. The method of claim 1,
    The electrode connector is a solar cell module, characterized in that consisting of a series connection for connecting the plurality of unit cells in series.
  10. 10. The method of claim 9,
    The series connection portion is composed of a first series connection portion and a second series connection portion,
    The first series connection part is formed to be in line with the electrode lead-out part,
    The second series connection part may include a first part and a second part formed to be in line with the electrode lead-out part, and a third part formed outside the support substrate to connect the first part and the second part. Solar cell module.
  11. 10. The method of claim 9,
    The electrode terminal portion is composed of one positive electrode terminal portion and the negative electrode terminal portion, each one of the positive electrode terminal portion and the negative electrode terminal portion, characterized in that formed in a line with the electrode lead-out portion.
  12. The method of claim 1,
    And the electrode lead-out part, the electrode connection part, and the electrode terminal part are formed on the rear of the plurality of unit cells.
  13. The method of claim 1,
    The support substrate may include a front support substrate formed on the front of the plurality of unit cells and a back support substrate formed on the rear of the plurality of unit cells.
    In order to fix the plurality of unit cells to the support substrate, a solar cell module, characterized in that an adhesive layer is formed between the plurality of unit cells and the support substrate.
  14. The method of claim 1,
    The support substrate is formed on the front or rear of the plurality of solar cell modules,
    In order to fix the plurality of unit cells to the support substrate, a solar cell module, characterized in that an adhesive layer is formed between the plurality of unit cells and the support substrate.
  15. The method of claim 1,
    A heat insulation substrate is further formed behind the support substrate, and the support substrate and the heat insulation substrate are spaced apart from each other by spacers so that a predetermined space is formed between the support substrate and the heat insulation substrate. .
KR1020110033852A 2011-04-12 2011-04-12 Solar cell module KR101124578B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100357905B1 (en) 2001-06-28 2002-10-25 주식회사 유일산업 Solar light power generation module for face of building
KR20070118896A (en) * 2006-06-13 2007-12-18 엘지전자 주식회사 Thin film solar cell being able to control input light intensity and manufacturing system thereof
KR20100022394A (en) * 2008-08-19 2010-03-02 주식회사 티지솔라 Solar cell module and method for fabricating the same
KR20100071511A (en) * 2008-12-19 2010-06-29 재단법인 포항산업과학연구원 Method of forming a solar cell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100357905B1 (en) 2001-06-28 2002-10-25 주식회사 유일산업 Solar light power generation module for face of building
KR20070118896A (en) * 2006-06-13 2007-12-18 엘지전자 주식회사 Thin film solar cell being able to control input light intensity and manufacturing system thereof
KR20100022394A (en) * 2008-08-19 2010-03-02 주식회사 티지솔라 Solar cell module and method for fabricating the same
KR20100071511A (en) * 2008-12-19 2010-06-29 재단법인 포항산업과학연구원 Method of forming a solar cell

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