TWI601300B - Solar cell module - Google Patents

Description

Solar battery module

The invention relates to a solar cell module, in particular to a solar cell module comprising an electrical design in which the solar cells are connected in series and in parallel with each other.

Basically, a solar cell module includes an array of a plurality of solar cells and is sealed to form a solar panel. Generally, when each solar cell unit is connected to form a solar cell module, a cell ribbon is used to bridge the front surface of each solar cell unit and the back surface of an adjacent solar cell unit, thereby forming Multiple solar cell strings. Next, a plurality of solar cell strings are arranged in parallel to form a solar cell array. Further, at the end of the solar cell array corresponding to the end of the solar cell string, the ends of the respective cell ribbons are connected in series by a bussing ribbon. When sunlight enters the light-receiving surface of the solar cell, the current generated by the solar cell is transmitted through the connection strip between the solar cells, and then output to the external storage device by the bus bar.

However, the electrical design of the conventional solar cell module requires that a plurality of interconnecting solder ribbons of different directions are disposed at corresponding positions of the respective solar cell units, so that the effects of series or parallel can be respectively achieved depending on the actual circuit design. In addition, since the conventional solar cell module needs to be electrically connected through a bus bar located on the side of the solar cell array and an interconnecting strip located between the solar cell units, a larger space needs to be reserved between the solar cell units. Separate distances, that is, the design of conventional solar cell modules, the proportion of regions that cannot contribute to conversion efficiency (power generation efficiency) is relatively high.

An embodiment of the invention provides a solar cell module, the solar cell module comprising a plurality of solar cells and a plurality of connectors. A plurality of solar cells are arranged in a two-dimensional array to have a plurality of solar cell rows and a plurality of solar cell columns. The solar cell unit has an upper electrode and a lower electrode, and the upper electrode and the lower electrode are respectively located on opposite surfaces of the solar cell. The upper electrode includes at least one upper bus electrode, the long axis direction of the upper bus electrode is parallel to the direction of the solar cell column, the lower electrode includes at least the lower bus electrode, and the long axis direction of the lower bus electrode is parallel to the direction of the solar cell column. The connectors are arranged in a one-dimensional array, and the long axis direction of the connectors is parallel to the direction of the solar cell column. The connectors are each disposed between adjacent rows of solar cells. In this embodiment, the length of the connectors is greater than the total length of the columns of solar cells. The connector has an upper portion, a middle portion, and a lower portion that are sequentially connected. Adjacent two upper bus electrodes of adjacent two solar cells of two adjacent solar cell rows are electrically connected through the upper portion of the connector. Adjacent two lower bus electrodes of adjacent two solar cells of two adjacent solar cell rows are electrically connected through a lower portion of the connector. A middle portion of the connecting member is sandwiched between adjacent two rows of solar battery cells.

An embodiment of the invention provides a solar cell module comprising at least four solar cells and at least one connector. In a vertical projection direction, the solar cells do not overlap each other and are arranged in a two-dimensional array to have two rows of solar cells and two columns of solar cells. The solar cell unit has an upper electrode and a lower electrode, and the upper electrode and the lower electrode are respectively located on opposite surfaces of the solar cell. The connector is configured on Between the two rows of solar cells, the long axis direction of the connector is parallel to the direction of the solar cell column, and the length of the connector in the figure is greater than the total length of the solar cell column, and the connector has an upper portion connected in sequence , middle and lower. The upper portion is electrically connected to adjacent two upper electrodes of adjacent two solar battery cells of one of the solar battery columns. The lower portion is electrically connected to adjacent two lower electrodes of adjacent two solar battery cells of another solar cell column. A middle portion of the connecting member is sandwiched between the two solar battery columns.

An embodiment of the invention provides a solar cell module, the solar cell module comprising a plurality of solar cells and a plurality of connectors. A plurality of solar cells are arranged in a two-dimensional array to have a plurality of solar cell rows and a plurality of solar cell columns. The solar cell unit has an upper bus electrode and a lower bus electrode, and the upper bus electrode and the lower bus electrode are respectively located on opposite surfaces of the solar cell, and the long axis direction of the upper bus electrode and the long axis direction of the lower bus electrode are parallel to the solar cell. The direction of the column. The connectors are arranged in a one-dimensional array. The long axis direction of the connector is parallel to the direction of the solar cell column. The connecting members are respectively disposed between adjacent two solar battery columns, and the connecting members have upper, middle and lower portions connected in sequence. The plurality of solar cells of the same solar cell row are connected in series through the connectors, and the plurality of solar cells of the same solar cell row are connected in parallel through the upper or lower portion of the same connector.

In summary, the solar cell module provided by the embodiment of the present invention includes a solar cell unit and a connecting member, and the connecting member is disposed between adjacent solar cell columns. In the solar cell array, the upper portion of the same connector is connected to the upper electrodes of the plurality of solar cells of the same solar cell column, and the lower portion of the same connector is also connected to the same solar cell row adjacent to the aforementioned solar cell column. The lower electrode of a plurality of solar cells. The middle portion of the same connector does not contact a plurality of solar cells of adjacent two solar cell columns. Solar cell line It is to be seen that the upper portions of the respective connecting members connect the upper electrodes of the plurality of solar battery cells of the respective solar battery rows, and the lower portions of the respective connecting members connect the lower electrodes of the plurality of solar battery cells of the respective solar battery rows. Thereby, all the solar cells of the same solar cell row are connected in series, and all the solar cells of the same solar cell row are connected in parallel. The embodiment of the invention does not need to additionally provide a plurality of interconnecting soldering strips in different directions between the respective solar battery cells, that is, the current steering can be realized through the connecting members, so that all the solar battery cells are connected in series and in parallel. Accordingly, the embodiment of the present invention can increase the path through which the current can pass, and prevent the conversion efficiency (power generation efficiency) of the part of the solar cell unit from being cracked or being shaded, and further improving the solar cell module. Overall electrical. In addition, when the size of the solar cell unit is reduced, the connector of the embodiment of the present invention can reduce the effect of current mismatch by implementing current steering.

100, 200, 300‧‧‧ solar battery modules

110‧‧‧Solar battery unit

120, 220, 320‧‧‧ connectors

122‧‧‧ upper

124‧‧‧Central

126‧‧‧ lower

130‧‧‧Insulation

140‧‧‧ Conductive layer

150‧‧‧Reflective film

BS‧‧‧ Backplane

D1‧‧‧ solar battery line

D2‧‧‧ solar battery column

D3‧‧‧Connecting line

E1‧‧‧Upper electrode

E12‧‧‧ upper bus electrode

E14, E24‧‧‧ finger electrodes

E2‧‧‧ lower electrode

E22‧‧‧ lower bus electrode

F1, F2‧‧‧EV film

L1‧‧‧ length

Lc1‧‧‧Upper width

Lc2‧‧‧ width

S1‧‧‧Stained surface

S2‧‧‧Backlit surface

Tc, T1‧‧‧ thickness

TS‧‧‧Transparent substrate

W1‧‧‧ total length

FIG. 1A is a schematic structural view of a solar cell module according to an embodiment of the present invention.

1B is a partial cross-sectional structural view of FIG. 1A taken along line A-A.

2 is a schematic structural view of a solar cell module according to still another embodiment of the present invention.

3 is a schematic structural view of a solar cell module according to another embodiment of the present invention.

4 is a schematic cross-sectional structural view of a solar cell module applied to a solar panel according to another embodiment of the present invention.

FIG. 1A is a schematic structural view of a solar cell module according to an embodiment of the present invention. 1B is a partial cross-sectional structural view taken along line A-A of FIG. 1A. Referring to FIGS. 1A and 1B , the solar cell module 100 includes a plurality of solar cells 110 and a connector 120 . The plurality of solar cells 110 are arranged in an array, and the connectors 120 are disposed between the solar cells 110.

In a vertical projection direction, the solar cells 110 do not overlap each other and are arranged in a two-dimensional array to have a plurality of solar cell rows D1 and a plurality of solar cell columns D2. The solar cell row D1 is a solar cell string along a column direction, and the solar cell row D2 is a solar cell string along a row direction. The solar cells 110 of the same solar cell row D1 are connected in series through different connectors 120, and the solar cells 110 of the same solar cell row D2 are connected in parallel through the same connector 120.

In the present embodiment, the number of the solar cell row D1 and the solar cell row D2 is, for example, six, and the solar cell module 100 of the array 6X6 is presented. However, the number of solar cell rows D1 and the number of solar cell columns D2 may also be unequal, depending on actual design requirements. It should be noted that the number of the solar cell row D1 and the solar cell row D2 are at least two, so that the smallest array in which the solar cell units 110 are arranged is a solar cell module exhibiting an array of 2×2. For example, referring to FIG. 2, in other embodiments, the solar cell module includes an array of 2×2 solar cells 110, and the connector 120 is disposed between the two solar cell columns D2.

In one embodiment, the solar cell unit 110 ranges in size from about 100 square centimeters to about 500 square centimeters. However, in other embodiments, the solar cell unit 110 can be used in smaller or larger sizes depending on the actual design. Specifically, when the size of the solar cell unit 110 is reduced, the current also becomes small. For example, when the size of the solar unit 110 is reduced to 1/6 of the size of the original solar battery unit, the current is also proportionally reduced to 1/6. In addition, The solar cell unit 110 may be, but not limited to, a single crystal germanium solar cell, a polycrystalline germanium solar cell, an amorphous germanium solar cell, a dye-sensitized solar cell, or the like.

Each of the solar battery cells 110 has a light receiving surface S1 and a backlight surface S2 with respect to the light receiving surface S1. The solar cell unit 110 includes an upper electrode E1 and a lower electrode E2. The upper electrode E1 is disposed on the light receiving surface S1, and the lower electrode E2 is disposed on the backlight surface S2.

In addition, since the upper electrode E1 is located on the light-receiving surface S1, in order to prevent the upper electrode E1 from shielding excessive sunlight, the amount of light incident on the light-receiving surface S1 is affected. Therefore, the light-shielding area of the upper electrode E1 to the light-receiving surface S1 needs to be considered. In the present embodiment, the upper electrode E1 may include an upper bus electrode E12 and a finger electrode E14, wherein the long axis direction of the upper bus electrode E12 is parallel to the direction of the solar cell column D2, and the long axis direction of the finger electrode E14 is parallel. In the direction of the solar cell row D1, that is, the upper bus electrode E12 is connected to the finger electrode E14 (for example, in a staggered form), as shown in FIG. 1A, the finger electrode E14 may be elongated, and the upper bus electrode E12 is The width is greater than the width of the finger electrode E14. However, in other embodiments, the finger electrode E14 may also have other shapes (not shown) such as, but not limited to, a tooth shape or a fish bone shape. Further, the longitudinal direction of the finger electrode E14 may not be parallel to the direction of the solar cell row D1.

In addition, the lower electrode E2 includes a lower bus electrode E22 and a plurality of finger electrodes E24. It should be noted that since the lower electrode E2 is located on the backlight surface S2, it is not necessary to consider the light-shielding area of the lower electrode E22 to the backlight surface S2. Therefore, the area of the lower bus electrode E22 can be increased, so that the electric resistance of the solar cell unit 110 can be reduced. Similarly, the long axis direction of the lower bus electrode E22 is parallel to the direction of the solar cell column D2.

It should be noted that the shapes of the upper bus electrode E12 and the lower bus electrode E22 are, for example, substantially elongated, and the long axis direction of the upper bus electrode E12 and the lower bus electrode E22 is It refers to the extending direction of the upper bus electrode E12 and the lower bus electrode E22. In other embodiments, the shape of the upper bus electrode E12 and the lower bus electrode E22 may be other shapes, such as a dotted line or a zigzag shape, which is not limited in the present invention.

In a vertical projection direction, each of the connectors 120 is disposed between adjacent two solar cell columns D2, and the connectors 120 are arranged in a one-dimensional array to have a connector row D3. The top view shape of the connector 120 is substantially elongated, wherein the long axis direction of the connector 120 is parallel to the direction of the solar cell row D2. Specifically, the length L1 of the connector 120 is greater than or equal to the total length W1 of the solar cell row D2, that is, the connector 120 extends along the column direction to connect to at least each solar cell 110 in the same solar cell column D2. . The thickness Tc of the connector 120 is greater than the thickness T1 of the solar cell unit 110. In one implementation, the thickness Tc of the connector 120 is less than or equal to 1.0 mm. In practice, the connector 120 is a bussing ribbon that not only can carry an array of solar cells 110 but also can direct and confluent the current generated by each solar cell 110 for output to an external load.

The connecting member 120 has an upper portion 122, a middle portion 124 and a lower portion 126. The upper portion 122 and the lower portion 126 are respectively located on opposite sides of the central portion 124, and the upper portion 122, the central portion 124 and the lower portion 126 are sequentially connected. Specifically, the angle between the upper portion 122 and the central portion 124 is greater than or equal to 90 degrees, and the angle between the central portion 124 and the lower portion 126 is greater than or equal to 90 degrees.

Taking the same connector 120 as an example, the upper portion 122 connects the adjacent two upper bus electrodes E12 of the adjacent two solar cells 110 of at least two adjacent solar cell rows D1, and the lower portion 126 connects at least two adjacent solar cell rows D1. The adjacent two lower bus electrodes E22 of the adjacent two solar battery cells 110. Specifically, as shown in FIG. 1A and FIG. 1B, the same connector 120 The upper portion 122 extends in the column direction, and the upper portion 122 of the same connector 120 has a physical connection with the upper bus electrode E12 of each solar cell unit 110 in the same solar cell column D2, so that the same solar cell column D2 The respective solar battery cells 110 are connected in parallel. The lower portion 126 of the same connector 120 extends in the column direction, and the lower portion 126 of the same connector 120 is simultaneously with the lower bus electrode E22 of each solar cell unit 110 in the same solar cell row D2 adjacent to the aforementioned solar cell column D2. There is a physical connection such that each solar cell unit 110 in the same solar cell column D2 adjacent to the aforementioned solar cell column is connected in parallel. Further, the upper bus electrode E12 of one of the solar cell units 110 of the same solar cell row D1 is physically connected to the upper portion 122 of one of the connector members 120, and the lower portion 126 of the same connector member 120 is connected to another adjacent solar energy. The lower bus electrodes E22 of the adjacent solar cells 110 of the battery row D1 are physically connected such that all of the solar cells 110 of the same solar cell row D1 are formed in series.

The upper portion 122 and the upper bus electrode E12 can be electrically connected, and the lower portion 126 and the lower bus electrode E22 can be electrically connected. The electrical connection between the upper portion 122 and the upper bus electrode E12 and the electrical connection between the lower portion 126 and the lower bus electrode E22 can be various, for example, through a solder connection or a conductive layer 140. For example, in the present embodiment, as shown in FIG. 1B, the upper portion 122 is directly soldered to the upper bus electrode E12, and the lower portion 126 is directly soldered to the lower bus electrode E22. In another embodiment, as shown in FIG. 3, the solar cell module 200 may further include a conductive layer 140 respectively on the lower surface of the upper portion 122 and the upper surface of the lower portion 126, so that the upper portion 122 is transparent to the conductive layer. 140 is electrically connected to the upper bus electrode E12, and the lower portion 126 is electrically connected to the lower bus electrode E22 through the conductive layer 140. In practice, the conductive layer 140 can be, but not limited to, a metal conductive paste (such as, but not limited to, silver glue), Tin plating layer, conductive film tape, and the like.

The middle portion 124 is sandwiched between the adjacent two solar cell columns D2 along the column direction. It should be noted that the central portion 124 of the connecting member 120 does not contact the solar battery unit 110 of the adjacent two solar battery columns D2 to prevent the solar battery unit 110 of the adjacent two solar battery columns D2 from being generated from the central portion 124 of the connecting member 120. A short circuit is caused by unnecessary contact. In this embodiment, as shown in FIG. 1B, the distance between two adjacent solar cell rows D2 may be at least greater than the thickness of the central portion 124 of the connector 120, that is, two phases of the same solar cell row D1. The distance between adjacent solar cells 110 may be at least greater than the thickness of the central portion 124 of the connector 120. Here, the middle portion 124 of the connecting member 120 may be spaced apart from the side surface of the adjacent two solar battery cells 110 located in the adjacent two solar battery columns D2. However, as shown in FIG. 3 , in another embodiment, the solar cell module 200 may further include a plurality of insulating layers 130 disposed on an outer surface of the central portion 124 of the connector 120 .

Accordingly, when sunlight is incident on the light receiving surface S1 of the solar battery cell 110, the generated current can be transmitted to the finger electrode E14 of the upper electrode E1, and then collected to the upper bus electrode E12 to be output. The upper bus electrode E12 of one of the solar cell units 110 of the same solar cell row D1 can transfer the collected current to the upper portion 122 of one of the connectors 120 and then to the lower portion 126 of the same connector 120 to another The lower bus electrode E22 of the adjacent solar cell unit 110 of an adjacent solar cell row D1 is connected in series between all the solar cell units 110 of the same solar cell row D1. The upper bus electrode E12 of one of the solar cell units 110 of the same solar cell row D2 directs the collected current through the upper portion 122 of the connector 120 to the upper bus electrode E12 of another adjacent solar cell unit 110. All solar cells 110 of the same solar cell row D2 are connected in parallel.

It should be noted that the upper portion 122 has an upper width Lc1 perpendicular to the long axis direction of the connecting member 120, and the lower portion 126 has a lower width Lc2 perpendicular to the long axis direction of the connecting member 120, wherein the values of the upper width Lc1 and the lower width Lc2 They can be equal or unequal depending on actual needs. In the present embodiment, the values of the upper width Lc1 and the lower width Lc2 may be substantially equal, and the upper width Lc1 of the upper portion 122 of the connector 120 may optionally not exceed the line width of the upper bus electrode E12, and thus, the upper portion 122 of the connector 120 The light-receiving surface S1 of the solar cell unit 110 is not additionally shielded, so that the light collecting effect of the solar cell unit 110 is not additionally affected. In an embodiment, the upper width Lc1 of the upper portion 122 is less than or equal to 3 mm. In another embodiment, as shown in FIG. 3, in the solar cell module 200, the upper width Lc1 is smaller than the lower width Lc2, and the lower width Lc2 of the lower portion 126 of the connecting member may extend beyond the line width of the lower bus electrode E22 to extend the solar cell. The backlight surface S2 of the unit 110. Therefore, the connector 220 can better carry the respective solar battery cells 110. In addition, increasing the lower width Lc2 of the lower portion 126 can reduce the resistance of the connector 120 itself, thereby reducing the series resistance of each of the solar cells 110 of the same solar cell row D1 to improve the overall electrical properties.

4 is a schematic cross-sectional structural view of a solar cell module applied to a solar panel according to another embodiment of the present invention. Referring to FIG. 4, in practice, the solar cell module 300 is sealed to form a solar panel. Specifically, the solar cell module 300 is sandwiched between two layers of ethylene-vinyl acetate copolymer (EVA) films F1 and F2 and sealed between the back sheet BS and the light-transmitting substrate TS. The light-receiving surface S1 of the solar cell unit 110 corresponds to the light-transmitting substrate TS, and the backlight surface S2 corresponds to the back-plate BS so that the sunlight LS enters the light-receiving surface S1 via the transparent substrate TS. The solar cell module 300 may further include a reflective film 150 disposed on an upper surface of the upper portion 122 of the connector 320. When the sunlight LS is incident on the solar cell module 300, part of the sunlight LS is incident on the reflective film 150 and is reflected by the reflective film 150 to the transparent substrate TS, and then reflected to the light receiving unit. The surface S1 facilitates the effective entry of the sunlight LS into the light receiving surface S1, thereby increasing the light utilization efficiency.

In summary, the solar cell module provided by the embodiment of the present invention includes a solar cell unit and a connecting member, and the connecting member is disposed between adjacent solar cell columns. In the solar cell array, the upper portion of the same connector is connected to the upper electrodes of the plurality of solar cells of the same solar cell column, and the lower portion of the same connector is also connected to the same solar cell column adjacent to the aforementioned solar cell column. The lower electrode of a plurality of solar cells. The middle portion of the same connector does not contact a plurality of solar cells of adjacent two solar cell columns. In the solar cell row, the upper portion of each connector is connected to the upper electrode of the solar cell of each solar cell row, and the lower portion of each connector is connected to the lower electrode of the solar cell of each solar cell row. Thereby, all the solar cells of the same solar cell row are connected in series, and all the solar cells of the same solar cell row are connected in parallel. The embodiment of the invention does not need to additionally provide a plurality of interconnecting soldering strips in different directions between the respective solar battery cells, that is, the current steering can be realized through the connecting members, so that all the solar battery cells are connected in series and in parallel. Accordingly, the embodiment of the present invention can increase the path through which the current can pass, and prevent some solar cells from being affected by cracks or being shaded, thereby reducing the influence of light conversion efficiency, thereby improving the overall electrical properties of the solar cell module. In addition, when the size of the solar cell unit is reduced, the connector of the embodiment of the present invention can reduce the effect of current mismatch by implementing current steering.

Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention are encompassed by the present invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

100‧‧‧Solar battery module

110‧‧‧Solar battery unit

120‧‧‧Connecting parts

122‧‧‧ upper

126‧‧‧ lower

D1‧‧‧ solar battery line

D2‧‧‧ solar battery column

D3‧‧‧Connecting line

E1‧‧‧Upper electrode

E12‧‧‧ upper bus electrode

E14‧‧‧ finger electrode

L1‧‧‧ length

W1‧‧‧ total length

Claims (10)

A solar cell module comprising: a plurality of solar cell units arranged in a two-dimensional array to have a plurality of solar cell rows and a plurality of solar cell columns, each of the solar cell cells having an upper electrode and a lower electrode, and each The upper electrode and the lower electrode of the solar cell unit are respectively located on opposite surfaces of the solar cell unit, and the upper electrode includes at least one upper bus electrode, and the long axis direction of the upper bus electrode is parallel to the solar cell columns. Direction, the lower electrode includes at least a lower bus electrode, the long axis direction of the lower bus electrode is parallel to the direction of the solar cell columns; and a plurality of connecting members are arranged in a one-dimensional array, and the long axis direction of each of the connecting members Parallel to the direction of the solar cell arrays, the connecting members are respectively disposed between adjacent two solar cell columns, and each of the connecting members has an upper portion, a middle portion and a lower portion connected in sequence; Adjacent two adjacent solar cell units of the adjacent two solar cell rows pass through the connecting member An upper connection, adjacent two adjacent solar cell units of the adjacent two solar cell units are connected through the lower portion of the connecting member, and the connecting member is disposed between the adjacent two solar battery columns The middle. The solar cell module of claim 1, wherein the middle portion of each of the connectors does not contact adjacent solar cells. The solar cell module of claim 1, wherein the solar cells do not overlap each other in a vertical projection direction. The solar cell module according to claim 1, wherein the upper portion has an upper width perpendicular to a longitudinal direction of the connecting member, and the lower portion has a lower width perpendicular to a longitudinal direction of the connecting member, the lower width Greater than or equal to the upper width. The solar cell module of claim 4, wherein the upper width of the upper portion is less than or equal to 3 mm. The solar cell module of claim 1, wherein the thickness of the connecting member is less than or equal to 1.0 mm. A solar cell module comprising: at least four solar cells, in a vertical projection direction, the solar cells do not overlap each other, arranged in a two-dimensional array to have two solar cells and two solar cells a row, each of the solar cells has an upper electrode and a lower electrode, and the upper electrode and the lower electrode of each of the solar cells are respectively located on opposite surfaces of the solar cell; and at least one connector is configured Between the two rows of solar cells, the long axis direction of the connecting member is parallel to the direction of the solar cell columns, and the connecting member has an upper portion, a middle portion and a lower portion connected in sequence; wherein the upper portion is electrically Connecting one of the adjacent two solar cells of the solar cell column to the adjacent two of the upper electrodes, the lower portion electrically connecting the adjacent two of the solar cell columns to the adjacent two of the solar cells An electrode, the middle portion of the connecting member is sandwiched between the two solar battery columns. The solar cell module of claim 7, wherein the upper portion has an upper width perpendicular to a longitudinal direction of the connecting member, and the lower portion has a lower width perpendicular to a longitudinal direction of the connecting member, the lower width Greater than or equal to the upper width. A solar cell module comprising: a plurality of solar cells arranged in a two-dimensional array to have a plurality of solar cell rows and a plurality of solar cell columns; and a plurality of connectors arranged in a one-dimensional array, the long axis direction of each of the connectors being parallel to the In the direction of the solar battery arrays, the connecting members are respectively disposed between the adjacent two solar battery columns, and each of the connecting members has an upper portion, a middle portion and a lower portion connected in sequence; wherein, the same The solar cell units of the solar cell row are connected in series through the connecting members, and the solar cell units of the same solar cell column are connected in parallel through the upper portion or the lower portion of the same connecting member. The solar cell module of claim 9, wherein the middle portion of each of the connectors does not contact adjacent solar cells.