Solar interconnector and solar cell module including same

Abstract

The present invention relates to a solar interconnector and a solar cell module including same. The solar interconnector according to the present invention comprises: a first conductor of which one side is arranged to face one of a pair of neighboring solar cells and of which the other side is arranged to face the other one of the pair of neighboring solar cells; a second conductor which is connected to the first conductor, and of which one side is arranged to face one of a pair of neighboring solar cells and of which the other side is arranged to face the other one of the pair of neighboring solar cells, and a bonding member which is arranged to encompass the first conductor and the second conductor and which is bonded to the solar cells.

Description

Solar interconnector and solar cell module having the same

[0001] The present invention relates to a solar interconnector and a solar cell module having the same.

[0002] As the depletion of existing energy resources like oil and coal is anticipated, interest in alternative energy sources is growing. Among these, solar cells are attracting attention as a next-generation energy source that converts solar energy into electricity.

[0003] As the efficiency and size of solar cells continue to increase, their current characteristics are also improving. This, in turn, necessitates increasing the cross-sectional area of ​​solar interconnectors used in the serial manufacturing process. However, increasing the cross-sectional area of ​​solar interconnectors reduces the light-receiving area of ​​the solar cell, lowering the efficiency of the solar module. Furthermore, there is a risk that the solar cell may be damaged by even minor impacts during the manufacturing or external installation process.

[0004] The purpose of the present invention is to provide a solar interconnector capable of improving series resistance and power generation efficiency and a solar cell module including the same.

[0005] In addition, the present invention aims to provide a solar interconnector having excellent bonding strength between components and capable of reducing manufacturing costs, and a solar cell module having the same.

[0006] A solar interconnector according to the present invention and a solar interconnector comprising the same include: a first conductor having one side facing one of a pair of neighboring solar cells and the other side facing the other of the pair of neighboring solar cells; a second conductor connected to the first conductor, having one side facing one of the pair of neighboring solar cells and the other side facing the other of the pair of neighboring solar cells; and a bonding member disposed to surround the first conductor and the second conductor and bonded to the solar cell.

[0007] A solar cell module according to the present invention comprises: a plurality of solar cells; and a solar interconnector disposed between a pair of neighboring solar cells, one side of which is connected to one of the pair of neighboring solar cells and the other side of which is connected to the other of the pair of neighboring solar cells; wherein the solar interconnector comprises: a first conductor; a second conductor disposed to face the first conductor and connected to the first conductor; and a bonding member disposed to surround the first conductor and the second conductor and bonded to the solar cell.

[0008] The solar interconnector according to the present invention and the solar cell module including the same can reduce the overall thickness of the solar module and reduce the manufacturing cost by reducing the height of the solar interconnector compared to the same cross-sectional area by the first conductor and the second conductor.

[0009] The solar interconnector and solar cell module including the same according to the present invention can eliminate the flattening process performed in the bonding process of existing solar interconnectors by expanding the width of the solar interconnector compared to the same cross-sectional area by the first conductor and the second conductor.

[0010] The solar interconnector according to the present invention and the solar cell module including the same can improve power generation efficiency because the surfaces of the first conductor and the second conductor have curved shapes, so that light reflected from the solar interconnector can be re-reflected to the solar cell by the protective member.

[0011] The solar interconnector according to the present invention and the solar cell module including the same can reduce the series resistance as the solar interconnector is in contact with the solar cell at two or more points, and have excellent bonding strength between the solar cell and the solar interconnector.

[0012] The solar interconnector and solar cell module including the same according to the present invention can reduce the amount of pressure applied to the solar cell and prevent damage to the solar cell by allowing the solar interconnector to come into contact with the solar cell over a wider area.

[0013] FIG. 1 is a perspective view schematically showing the installation state of a solar cell module according to one embodiment of the present invention.

[0014] FIG. 2 is a perspective view schematically showing the configuration of a solar cell module according to one embodiment of the present invention.

[0015] FIG. 3 is a plan view schematically showing the configuration of a solar cell module according to one embodiment of the present invention.

[0016] FIG. 4 is a side view schematically showing the configuration of a solar cell module according to one embodiment of the present invention.

[0017] Figure 5 is a cross-sectional view schematically showing the configuration of a solar cell module according to one embodiment of the present invention.

[0018] Figure 6 is a perspective view schematically showing the configuration of a solar interconnector according to one embodiment of the present invention.

[0019] Figure 7 is a cross-sectional view schematically showing the configuration of a solar interconnector according to one embodiment of the present invention.

[0020] FIG. 8 is a cross-sectional view schematically showing the configuration of a solar interconnector according to another embodiment of the present invention.

[0021] FIG. 9 is a drawing schematically showing a state in which a protective member according to one embodiment of the present invention reflects light back to a solar cell.

[0022] A solar interconnector according to the present invention and a solar interconnector comprising the same include: a first conductor having one side facing one of a pair of neighboring solar cells and the other side facing the other of the pair of neighboring solar cells; a second conductor connected to the first conductor, having one side facing one of the pair of neighboring solar cells and the other side facing the other of the pair of neighboring solar cells; and a bonding member disposed to surround the first conductor and the second conductor and bonded to the solar cell.

[0023] The first conductor and the second conductor may be arranged parallel to each other.

[0024] The cross-sectional areas of the first conductor and the second conductor may be the same.

[0025] At least a portion of the surface of the first conductor and the second conductor may include a curved surface.

[0026] The cross sections of the first conductor and the second conductor may be circular.

[0027] The cross sections of the first conductor and the second conductor may be elliptical.

[0028] The melting temperature of the above-mentioned joining member may be lower than the melting temperatures of the first conductor and the second conductor.

[0029] The first conductor and the second conductor may include at least one selected from the group consisting of copper (Cu), silver (Ag), aluminum (Al), gold (Au), or a combination thereof.

[0030] The above bonding material may include at least one selected from the group consisting of lead (Pb), tin (Sn), silver (Ag), bismuth (Bi), or a combination thereof.

[0031] It may further include a connecting member disposed between the first conductor and the second conductor.

[0032] The height of the above connecting member may be lower than the heights of the first conductor and the second conductor.

[0033] The above connecting member can be formed symmetrically with respect to a plane where the central axes of the first conductor and the second conductor are located.

[0034] A solar cell module according to the present invention comprises: a plurality of solar cells; and a solar interconnector disposed between a pair of neighboring solar cells, one side of which is connected to one of the pair of neighboring solar cells and the other side of which is connected to the other of the pair of neighboring solar cells; wherein the solar interconnector comprises: a first conductor; a second conductor disposed to face the first conductor and connected to the first conductor; and a bonding member disposed to surround the first conductor and the second conductor and bonded to the solar cell.

[0035] A plurality of the above solar cells are arranged along a first direction and a second direction intersecting the first direction, and the solar interconnector can be arranged between a pair of the above solar cells adjacent along the first direction.

[0036] The solar cell comprises a cell body; a first electrode connected to the cell body; and a second electrode connected to the cell body and having a polarity different from the first electrode, wherein one side of the solar interconnector may be connected to the first electrode of one of the adjacent pair of solar cells, and the other side of the solar interconnector may be connected to the second electrode of the remaining one of the adjacent pair of solar cells.

[0037] The first electrode may be disposed on a first surface of the cell body, and the second electrode may be disposed on a second surface opposite to the first surface.

[0038] The width of the above solar interconnector may be smaller than the widths of the first electrode and the second electrode.

[0039] The above-mentioned bonding member includes a first bonding member arranged to surround the first conductor; and a second bonding member arranged to surround the second conductor; wherein the first bonding member and the second bonding member can be in contact with the solar cell.

[0040] It may further include a sealing member covering the solar cell and the solar interconnector; and a protective member laminated on the sealing member.

[0041] The above protective member can reflect light reflected from the solar interconnector in a direction toward the solar cell.

[0042] Hereinafter, with reference to the attached drawings, embodiments of a solar interconnector and a solar cell module including the same according to the present invention will be described.

[0043] In this process, the thickness of lines and the sizes of components depicted in the drawings may be exaggerated for clarity and convenience. Furthermore, the terms described below are defined based on their functions within the present invention and may vary depending on the intent or custom of the user or operator. Therefore, the definitions of these terms should be based on the overall content of this specification.

[0044] Additionally, in this specification, when it is said that a part is "connected (or connected)" to another part, this includes not only cases where it is "directly connected (or connected)" but also cases where it is "indirectly connected (or connected)" with another member in between. In this specification, when it is said that a part "includes (or comprises)" a certain component, this does not mean that other components are excluded, but rather that other components can be "included (or comprised)" unless specifically stated otherwise.

[0045] In addition, the same reference numerals may refer to the same components throughout this specification. Even if the same or similar reference numerals are not mentioned or described in a specific drawing, they may be described based on other drawings. In addition, even if a part is not indicated by a reference numeral in a specific drawing, that part may be described based on other drawings. In addition, the number, shape, size, and relative size differences of detailed components included in the drawings of this application are set for the convenience of understanding, and do not limit the embodiments and may be implemented in various forms.

[0046] FIG. 1 is a perspective view schematically showing an installation state of a solar cell module according to one embodiment of the present invention, FIG. 2 is a perspective view schematically showing a configuration of a solar cell module according to one embodiment of the present invention, FIG. 3 is a plan view schematically showing a configuration of a solar cell module according to one embodiment of the present invention, FIG. 4 is a side view schematically showing a configuration of a solar cell module according to one embodiment of the present invention, and FIG. 5 is a cross-sectional view schematically showing a configuration of a solar cell module according to one embodiment of the present invention.

[0047] Referring to FIGS. 1 to 5, a solar cell module may include a solar cell (100) and a solar interconnector (200).

[0048] A solar cell (100) can function as a unit structure that converts external light energy into electrical energy to produce electricity.

[0049] A plurality of solar cells (100) may be provided. The plurality of solar cells (100) may be arranged in a plurality of rows along a first direction and a second direction. Here, the first direction and the second direction may be different directions that intersect each other, and may be exemplified as directions parallel to the X-axis and the Y-axis, respectively, based on FIG. 1. The plurality of solar cells (100) may be arranged parallel to each other. Any pair of neighboring solar cells (100) may be arranged to be spaced apart from each other by a predetermined interval.

[0050] A solar cell (100) may include a cell body (110), a first electrode (120), and a second electrode (130).

[0051] The cell body (110) may have a structure in which a p-type semiconductor layer and an n-type semiconductor layer having different conductive types are pn-junctioned. The p-type semiconductor layer may include a p-type dopant of a trivalent element such as boron (B), aluminum (Al), gallium (Ga), or indium (In), and the n-type semiconductor layer may include an n-type dopant of a pentavalent element such as phosphorus (P), arsenic (As), antimony (Sb), or bismuth (Bi). When light is incident on the cell body (110), electrons and holes generated by the photoelectric effect may move toward the n-type semiconductor and the p-type semiconductor, respectively, according to the principle of the pn-junction.

[0052] The cell body (110) may be formed to have a panel shape including a first surface (111) and a second surface (112) that are opposite to each other. For example, the first surface (111) of the cell body (110) may be a surface on which an n-type conductive semiconductor layer is arranged among both surfaces of the cell body (110), and may be the upper surface with reference to FIG. 5, and the second surface (112) may be a surface on which a p-type conductive semiconductor layer is arranged among both surfaces of the cell body (110), and may be the upper surface with reference to FIG. 5.

[0053] The first electrode (120) and the second electrode (130) are electrically connected to the cell body (110) and can collect electrons and holes moved toward the n-type semiconductor and the p-type semiconductor, respectively, in the cell body (110).

[0054] The first electrode (120) and the second electrode (130) may be formed of a material capable of conducting electricity. For example, the first electrode (120) and the second electrode (130) may include at least one selected from the group consisting of nickel (Ni), copper (Cu), silver (Ag), aluminum (Al), tin (Sn), zinc (Zn), indium (In), titanium (Ti), gold (Au), and combinations thereof.

[0055] The first electrode (120) and the second electrode (130) may be disposed on the first surface (111) and the second surface (112) of the cell body (110), respectively. The first electrode (120) and the second electrode (130) may be electrically connected to the n-type conductive semiconductor layer and the p-type conductive semiconductor layer of the cell body (110), respectively. Accordingly, the first electrode (120) and the second electrode (130) may have different polarities. For example, the first electrode (120) may have a cathode, and the second electrode (130) may have an anode.

[0056] The first electrode (120) and the second electrode (130) may be formed to have a roughly pad shape. The first electrode (120) and the second electrode (130) may have a shape in which the longitudinal direction extends along the first direction. The outer surfaces of the first electrode (120) and the second electrode (130) may be exposed to the outside of the first surface (111) and the second surface (112), respectively. In this case, the outer surfaces of the first electrode (120) and the second electrode (130) exposed to the outside of the cell body (110) may be formed to form a continuous plane with the first surface (111) and the second surface (112), respectively.

[0057] The width (W2) of the second electrode (130) may be greater than the width (W1) of the first electrode (120). For example, the width (W1) of the first electrode (120) may be 800 μm, and the width (W2) of the second electrode (130) may be 2200 μm.

[0058] A solar interconnector (200) can function as a configuration that electrically interconnects a plurality of solar cells (100). The solar interconnector (200) can be arranged between a pair of neighboring solar cells (100). More specifically, referring to FIG. 1, the solar interconnector (200) can be arranged between a pair of neighboring solar cells (100) along a first direction. A plurality of solar interconnectors (200) can be provided. The plurality of solar interconnectors (200) can be individually arranged for each pair of neighboring solar cells (100) along the first direction. Here, the interconnector can be expressed as a ribbon or a wire, etc.

[0059] A solar interconnector (200) can electrically connect a pair of neighboring solar cells (100) in series along a first direction. More specifically, one side of the solar interconnector (200) can be in contact with a first electrode (120) of one of the solar cells (100) of the neighboring pair of solar cells (100) along the first direction and be electrically connected to the first electrode (120). The other side of the solar interconnector (200) can be connected to a second electrode (130) of the remaining solar cell (100) of the pair of neighboring solar cells (100) along the first direction.

[0060] The central portion of the solar interconnector (200) may be arranged to pass through the empty space formed between a pair of neighboring solar cells (100). As it is arranged on opposite sides of the cell body (110) of the first side (111) and the second side (112), the central portion of the solar interconnector (200) may be bent from both sides of the solar interconnector (200) and arranged to be inclined at a predetermined angle with respect to the first side (111) and the second side (112).

[0061] The width (Wr) of the solar interconnector (200) may be arranged parallel to the widths of the first electrode (120) and the second electrode (130). The width (Wr) of the solar interconnector (200) may be smaller than the widths of the first electrode (120) and the second electrode (130). For example, the width (Wr) of the solar interconnector (200) may be 360 ​​μm or more and 560 μm or less. The height (Hr) of the solar interconnector (200) may be 170 μm or more and 270 μm or less.

[0062] FIG. 6 is a perspective view schematically showing the configuration of a solar interconnector according to one embodiment of the present invention, and FIG. 7 is a cross-sectional view schematically showing the configuration of a solar interconnector according to one embodiment of the present invention.

[0063] Referring to FIG. 6 and FIG. 7, the solar interconnector (200) may include a first conductor (210), a second conductor (220), and a bonding member (230).

[0064] The first conductor (210) and the second conductor (220) can function as a path for transmitting current between a pair of neighboring solar cells (100). The first conductor (210) and the second conductor (220) can be arranged so that one side faces one of the pair of neighboring solar cells (100), and the other side faces the other side of the pair of neighboring solar cells (100).

[0065] The first conductor (210) and the second conductor (220) can be formed to have a shape roughly like a wire. The first conductor (210) and the second conductor (220) can be arranged parallel to each other. That is, the central axis (C1) of the first conductor (210) and the central axis (C2) of the second conductor (220) can be arranged parallel to each other. The facing surfaces of the first conductor (210) and the second conductor (220) can be joined as one piece. The first conductor (210) and the second conductor (220) can be manufactured as separate parts and then joined as one piece by welding or the like, or can also be manufactured as one piece by extrusion molding. By this structure, the first conductor (210) and the second conductor (220) can reduce the height (Hr) of the solar interconnector (200) compared to the same cross-sectional area, thereby reducing the overall thickness of the solar module. In addition, the first conductor (210) and the second conductor (220) can expand the width (Wr) of the solar interconnector (200) compared to the same cross-sectional area, thereby excluding the flattening process for securing bonding stability in the bonding process with the solar cell (100).

[0066] At least a portion of the surface of the first conductor (210) and the second conductor (220) may include a curved surface. For example, as illustrated in FIG. 7, the cross-sections of the first conductor (210) and the second conductor (220) may be circular. In addition, the cross-sections of the first conductor (210) and the second conductor (220) may also be elliptical. Accordingly, the solar interconnector (200) may be formed to have a cross-sectional shape roughly in the shape of a dumbbell. The surface curvatures of the first conductor (210) and the second conductor (220) may be designed to have various values ​​depending on the size of the solar cell (100), etc. The cross-sectional areas of the first conductor (210) and the second conductor (220) may be the same.

[0067] The first conductor (210) and the second conductor (220) can be electrically connected to the first electrode (120) and the second electrode (130) via a joining member (230) described later. The first conductor (210) and the second conductor (220) can be formed of an electrically conductive material. For example, the first conductor (210) and the second conductor (220) can include at least one selected from the group consisting of copper (Cu), silver (Ag), aluminum (Al), gold (Au), or a combination thereof.

[0068] The bonding member (230) can function as a configuration for mechanically fixing the first conductor (210) and the second conductor (220) to the first electrode (120) and the second electrode (130) and electrically connecting the first conductor (210) and the second conductor (220) to the first electrode (120) and the second electrode (130). The bonding member (230) can be arranged to entirely surround the first conductor (210) and the second conductor (220).

[0069] The bonding member (230) melts when the solar interconnector (200) is heated above a set temperature after coming into contact with the first electrode (120) and the second electrode (130), and can be bonded to the first electrode (120) and the second electrode (130). The bonding member (230) has a melting temperature lower than the melting temperatures of the first conductor (210) and the second conductor (220), and can be formed of an electrically conductive material. For example, the bonding member (230) can include at least one selected from the group consisting of lead (Pb), tin (Sn), silver (Ag), bismuth (Bi), or a combination thereof.

[0070] The joining member (230) may include a first joining member (231) that wraps around the first conductor (210) and a second joining member (232) that wraps around the second conductor (220). The cross sections of the first joining member (231) and the second joining member (232) may have a shape that continuously wraps around the circumferences of the first conductor (210) and the second conductor (220).

[0071] The first bonding member (231) and the second bonding member (232) can both be in contact with the solar cell (100). For example, as illustrated in FIG. 5, on one side of the solar interconnector (200), the first bonding member (231) and the second bonding member (232) can be bonded to the first electrode (120) while both are in contact with the first electrode (120). Similarly, on the other side of any one of the solar interconnectors (200), the first bonding member (231) and the second bonding member (232) can be bonded to the second electrode (130) while both are in contact with the second electrode (130). Accordingly, the first bonding member (231) and the second bonding member (232) can reduce the size of the series resistance and improve the bonding strength between the solar interconnector (200) and the solar cell (100) by expanding the contact area between the solar interconnector (200) and the solar cell (100). In addition, the first bonding member (231) and the second bonding member (232) can reduce the size of the pressure applied to the solar cell (100) compared to the same cross-sectional area, thereby preventing damage to the solar cell (100).

[0072] FIG. 8 is a cross-sectional view schematically showing the configuration of a solar interconnector according to another embodiment of the present invention.

[0073] Referring to FIG. 8, the first conductor (210) and the second conductor (220) are spaced apart from each other along the width (Wr) direction of the solar interconnector (200), and the solar interconnector (200) may further include a connecting member (240).

[0074] The connecting member (240) is arranged between the first conductor (210) and the second conductor (220), and can function as a configuration that mechanically and electrically connects the first conductor (210) and the second conductor (220) that are spaced apart from each other. Accordingly, the connecting member (240) can expand the width (Wr) of the solar interconnector (200) without expanding the diameters of the first conductor (210) and the second conductor (220).

[0075] The connecting member (240) may be placed between the surfaces of the first conductor (210) and the second conductor (220) facing each other. Both sides of the connecting member (240) may be integrally connected to the first conductor (210) and the second conductor (220), respectively. In this case, the connecting member (240) may be manufactured separately from the first conductor (210) and the second conductor (220) and may be connected to the first conductor (210) and the second conductor (220) by welding or the like. Alternatively, the connecting member (240) may be manufactured integrally with the first conductor (210) and the second conductor (220). The connecting member (240) may be made of the same material as the first conductor (210) and the second conductor (220).

[0076] The connecting member (240) may be formed symmetrically with respect to a plane where the central axis (C1) of the first conductor (210) and the central axis (C2) of the second conductor (220) are located. That is, with reference to FIG. 8, the cross-section of the connecting member (240) may be formed symmetrically vertically with respect to a straight line passing through the central axis (C1) of the first conductor (210) and the central axis (C2) of the second conductor (220) simultaneously. The height (h3) of the connecting member (240) may be lower than the height (h1) of the first conductor (210) and the height (h2) of the second conductor (220). For example, when the height (h1) of the first conductor (210) and the height (h3) of the second conductor (220) are 200 μm or more and 220 μm or less, the height of the connecting member (240) may be 150 μm or more and 170 μm.

[0077] In the present embodiment, the joining member (230) may further include a third joining member (233) arranged to surround the connecting member (240). The third joining member (233) may be connected on both sides to the first joining member (231) and the second joining member (232), respectively. The first joining member (231), the second joining member (232), and the third joining member (233) may be formed to form a closed curve shape that continuously surrounds the circumferences of the first conductor (210), the second conductor (220), and the connecting member (240). The third joining member (233) may be formed of the same material as the first joining member (231) and the second joining member (232).

[0078] The solar cell module according to the present embodiment may further include a sealing member (300) and a protective member (400).

[0079] The sealing member (300) covers the solar cell (100) and the solar interconnector (200) to prevent corrosion of the solar cell (100) and the solar interconnector (200) due to moisture penetration, and protect the solar cell (100) and the solar interconnector (200) from impact. The sealing member (300) may be made of a material such as ethylene vinyl acetate (EVA).

[0080] The sealing member (300) may include a first sealing member (310) and a second sealing member (320).

[0081] The first sealing member (310) is formed to have a shape such as a flat plate or film, and can be arranged to face the first surface (111) of the cell body (110). The first sealing member (310) can be arranged to entirely surround one side of the solar interconnector (200) and the first electrode (120) arranged on the first surface (111).

[0082] The second sealing member (320) is formed to have a shape such as a flat plate or film, and can be arranged to face the second surface (112) of the cell body (110). The second sealing member (320) can be arranged to entirely surround the other side of the solar interconnector (200) and the second electrode (130) arranged on the first surface (111).

[0083] The first sealing member (310) and the second sealing member (320) can be bonded to the first surface (111) and the second surface (112), respectively, by a lamination process.

[0084] The protective member (400) can be laminated on the sealing member (300) to form the outermost exterior of the solar cell module. The protective member (400) can protect the solar cell (100) and the solar interconnector (200) together with the sealing member (300) from external impact.

[0085] The protective member (400) may include a first protective member (410) and a second protective member (420).

[0086] The first protective member (410) and the second protective member (420) are formed to have a flat shape and can be arranged to face the outer surfaces of the first sealing member (310) and the second sealing member (320), respectively. The first protective member (410) and the second protective member (420) can include tempered glass having high transmittance and excellent breakage prevention function. The tempered glass can be low iron tempered glass having a low iron content. The inner surfaces of the first protective member (410) and the second protective member (420) can be embossed to enhance the light scattering effect.

[0087] The protective member (400) can re-reflect light reflected from the solar interconnector (200) in a direction toward the solar cell (100).

[0088] FIG. 9 is a drawing schematically showing a state in which a protective member according to one embodiment of the present invention reflects light back to a solar cell.

[0089] Below, an example will be described in which light is incident on the first protective member (410).

[0090] Referring to FIG. 9, since the first protective member (410) is formed of a material with high transmittance, light incident on the first protective member (410) can pass through the first protective member (410) and be incident on the first surface (111) of the cell body (110).

[0091] A portion of the light incident on the first surface (111) may be reflected from the surface of the solar interconnector (200), i.e., the bonding member (230). In this case, since the first conductor (210) and the second conductor (220) have a circular or elliptical cross-sectional shape, the light reflected from the surface of the solar interconnector (200) may be re-incident at various angles to the first protective member (410).

[0092] Light re-incident into the first protective member (410) may be totally reflected in the direction toward the cell body (110) at the boundary surface of the first protective member (410) when the incident angle is greater than the critical angle due to the difference in refractive index between the first sealing member (310) and the first protective member (410), or between the external air and the first protective member (410).

[0093] Accordingly, light reflected in the direction from the first protective member (410) toward the cell body (110) can be incident on the cell body (110) to improve power generation efficiency.

[0094] Although the present invention has been described with reference to the embodiments shown in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

[0095] Therefore, the technical protection scope of the present invention should be defined by the following patent claims.

[0096] According to one embodiment of the present invention, a solar interconnector and a solar cell module comprising the same can be applied to various industrially applicable devices. In particular, the present invention can be applied to a solar interconnector and solar cell module that improves series resistance and power generation efficiency.

Claims

1. In a solar interconnector connecting multiple solar cells, A first conductor having one side facing one of the pair of adjacent solar cells and the other side facing the other one of the pair of adjacent solar cells; A second conductor connected to the first conductor, one side of which faces one of the pair of adjacent solar cells, and the other side of which faces the other one of the pair of adjacent solar cells; and A solar interconnector comprising a bonding member arranged to surround the first conductor and the second conductor and bonded to the solar cell.

2. In paragraph 1, A solar interconnector in which the first conductor and the second conductor are arranged parallel to each other.

3. In paragraph 1, A solar interconnector in which the cross-sectional areas of the first conductor and the second conductor are the same.

4. In paragraph 1, A solar interconnector wherein at least a portion of the surface of the first conductor and the second conductor comprises a curved surface.

5. In paragraph 4, A solar interconnector in which the cross sections of the first conductor and the second conductor are circular.

6. In paragraph 4, A solar interconnector in which the cross sections of the first conductor and the second conductor are oval.

7. In paragraph 1, A solar interconnector wherein the melting temperature of the above-mentioned bonding member is lower than or equal to the melting temperatures of the first conductor and the second conductor.

8. In paragraph 7, A solar interconnector wherein the first conductor and the second conductor include at least one selected from the group consisting of copper (Cu), silver (Ag), aluminum (Al), gold (Au), or a combination thereof.

9. In paragraph 7, A solar interconnector wherein the above bonding member comprises at least one selected from the group consisting of lead (Pb), tin (Sn), silver (Ag), bismuth (Bi), or a combination thereof.

10. In paragraph 1, A solar interconnector further comprising a connecting member disposed between the first conductor and the second conductor.

11. In paragraph 10, A solar interconnector in which the height of the above connecting member is lower than the heights of the first conductor and the second conductor.

12. In paragraph 10, A solar interconnector in which the above connecting member is formed symmetrically with respect to a plane in which the central axes of the first conductor and the second conductor are located.

13. Multiple solar cells; and A solar interconnector is disposed between a pair of neighboring solar cells, one end of which is connected to one of the pair of neighboring solar cells, and the other end of which is connected to the other end of the pair of neighboring solar cells; The above solar interconnector, first conductor; A second conductor arranged to face the first conductor and connected to the first conductor; and A solar cell module comprising a bonding member arranged to surround the first conductor and the second conductor and bonded to the solar cell.

14. In paragraph 13, A plurality of the above solar cells are arranged along a first direction and a second direction intersecting the first direction, A solar cell module in which the above solar interconnector is placed between a pair of adjacent solar cells along the first direction.

15. In paragraph 13, The above solar cell, Cell body; a first electrode connected to the cell body; and A second electrode connected to the cell body and having a different polarity from the first electrode, One side of the above solar interconnector is connected to the first electrode of one of the adjacent pair of solar cells, A solar cell module in which the other side of the above solar interconnector is connected to the second electrode of the remaining one of the adjacent pair of solar cells.

16. In paragraph 15, The above first electrode is arranged on the first surface of the cell body, A solar cell module in which the second electrode is arranged on a second surface opposite to the first surface.

17. In paragraph 15, A solar cell module wherein the width of the above solar interconnector is smaller than the widths of the first electrode and the second electrode.

18. In paragraph 13, The above-mentioned joining member is, A first bonding member arranged to surround the first conductor; and A second bonding member arranged to surround the second conductor; A solar cell module in which the first bonding member and the second bonding member are in contact with the solar cell.

19. In any one of paragraphs 13 to 18, A sealing member covering the solar cell and the solar interconnector; and A solar cell module further comprising a protective member laminated on the sealing member.

20. In paragraph 19, The above protective member is a solar cell module that reflects light reflected from the solar interconnector in a direction toward the solar cell.

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