CN213242565U - Solar cell module and solar power station - Google Patents

Abstract

The utility model discloses a solar module and solar power station relates to the photovoltaic technology field to reduce solar module because of being sheltered from produced generated energy loss and hot spot effect. The solar cell module comprises a first cell string group and a second cell string group. The first battery string group is electrically connected with the second battery string group. The first battery string group comprises at least one first battery string, the second battery string group comprises at least one second battery string, and the area of each first battery piece contained in each first battery string is larger than that of each second battery piece contained in each second battery string. The solar power station includes a plurality of solar cell modules arranged in an array. The utility model provides a solar module and solar power station are used for the solar module preparation.

Description

Solar cell module and solar power station

Technical Field

The utility model relates to the field of photovoltaic technology, especially, relate to a solar module and solar power station.

Background

At present, in the process of building a solar power station, solar modules are fixed on steel structure supports with inclined support surfaces, and then rows of supports are distributed over the whole power station.

In a solar power station, individual solar modules are fixed on a support in an inclined manner. The lower part (part close to the ground) of the solar cell module in the inclined state is easily shielded by dust or other solar cell modules. This situation reduces the power generation amount of the solar cell module, and generates a hot spot effect, which affects the service life of the solar cell module.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solar module and solar power station to reduce solar module because of being sheltered from produced generated energy loss and hot spot effect.

In a first aspect, the present invention provides a solar cell module. The solar cell module comprises a first cell string group and a second cell string group. The first battery string group is electrically connected with the second battery string group. The first battery string group comprises at least one first battery string, the second battery string group comprises at least one second battery string, and the area of each first battery piece contained in each first battery string is larger than that of each second battery piece contained in each second battery string.

When the technical scheme is adopted, the area of the second battery piece is smaller than that of the first battery piece, and the power of the battery piece is in direct proportion to the area, so that the power of the second battery piece is smaller than that of the first battery piece. Correspondingly, the power of the second battery string containing the same number of battery plates is smaller than that of the first battery string, and the power of the second battery string group containing the same number of battery strings is smaller than that of the first battery string group. At this time, the power of the second cell string group in the whole solar cell module is small. When the solar cell module is specifically installed, the first cell string group of the solar cell module can be close to the ground (close to the lower part), and the second cell string group of the solar cell module can be far away from the ground (close to the upper part). When the second battery string group is shielded, the power of the shielded second battery string group in the whole solar battery assembly is smaller, so that the power lost due to shielding of the second battery string group is smaller, and meanwhile, the electric energy consumed by the second battery string group as a load is also smaller. It is visible, the utility model provides a solar module can reduce and shelter from the generated energy loss that brings, weakens the hot spot effect to guarantee solar module's generated energy and life.

In some possible implementations, the area ratio of the first cell slice to the second cell slice is 1: (0.2-0.7).

Through statistical analysis, after the solar cell module is shielded, the minimum value of the area ratio of the light receiving area to the shadow area is 1:0.2, and the maximum value is 1: 0.7. Therefore, when the area ratio of the first cell piece to the second cell piece is 1: (0.2-0.7), the first battery string group and the second battery string group of the solar battery assembly are distributed according to the area ratio, so that the requirements of more working conditions can be met, and the application range is wide.

In some possible implementations, the first cell piece and the second cell piece are sliced cell pieces formed by cutting solar cell pieces. At the moment, the sizes of the first battery piece and the second battery piece can be conveniently controlled through a cutting process, so that the area distribution of the first battery string group and the second battery string group in the solar battery module is conveniently controlled.

In some possible implementations, the first cell piece and the second cell piece are sliced cell pieces formed by cutting the solar cell pieces along cutting lines parallel to edges of the solar cell pieces. At the moment, the first cell piece and the second cell piece are rectangular cell pieces with chamfers, are regular in shape, are convenient to densely arrange, and can improve the power of the solar cell module.

In some possible implementations, the first cell piece and the second cell piece are sliced cell pieces formed by cutting the solar cell pieces along a cutting line having an included angle with an edge of the solar cell piece. At this moment, the first battery piece and the second battery piece are right trapezoid battery pieces with chamfers or right triangle battery pieces with chamfers, dense arrangement can be realized through the mode that the bevel edges of two adjacent first battery pieces or second battery pieces are opposite, and the space utilization rate is improved.

In some possible implementations, the first battery string set includes a plurality of first battery strings, and the second battery string set includes a plurality of second battery strings. The first battery strings are electrically connected together, and the second battery strings are electrically connected together. When the number of the first battery strings is multiple, the first battery strings may be connected in parallel to increase the current of the solar battery module, or the first battery strings may be connected in series to increase the voltage of the first battery string group. Similarly, the voltage or current of the second battery string set can be increased in the same manner.

In some possible implementations, the plurality of first battery strings are connected together in parallel, the plurality of second battery strings are connected together in parallel, and the first battery string set and the second battery string set are connected together in series.

In some possible implementations, the solar cell module further includes a third cell string group. The third battery string group comprises at least one third battery string, and the area of a third battery piece contained in each third battery string is larger than or equal to that of the first battery piece. At this time, the solar cell module includes three sets of cell strings, and the power ratio of the three sets of cell strings is increased. In this case, the third cell string group having the largest power ratio may be disposed away from the shadow region, and when the second cell string group or the first cell string group is blocked, the power loss of the solar cell module may be reduced as much as possible, thereby reducing the power generation amount loss and weakening the hot spot effect.

In some possible implementations, a plurality of first battery strings are connected in series, a plurality of second battery strings are connected in series, and the first battery string set and the second battery string set are connected in parallel. At the moment, when the first battery string group is shielded and cannot effectively utilize solar energy to generate electric energy, the second battery string group can still normally work to convert the solar energy into the electric energy.

In some possible implementation manners, the number of the first battery pieces included in each first battery string is the same as the number of the second battery pieces included in each second battery string. At this time, the voltage of each first battery string is the same as the voltage of each second battery string, and voltage mismatch can be avoided.

In a second aspect, the present invention also provides a solar power station. The solar power station comprises a plurality of the first aspects arranged in an array or a solar module as described in any possible implementation of the first aspects.

The beneficial effects of the solar power station provided by the second aspect may refer to the beneficial effects of the solar cell module described in the first aspect or any possible implementation manner of the first aspect, and are not described herein again.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a first schematic structural diagram of a solar cell module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram ii of a solar cell module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a solar cell with parallel cutting lines according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a solar cell having an oblique cutting line according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a solar cell module including a third cell string set according to an embodiment of the present invention.

Reference numerals:

10-a first cell string group, 11-a first cell string, 111-a first cell, 20-a second cell string group, 21-a second cell string, 211-a second cell, 30-a third cell string group, 31-a third cell string, 311-a third cell, 40-a solar cell, 41-a parallel cutting line, and 42-an oblique cutting line.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The battery slice manufactured by the processes of texturing, diffusion, cleaning, film coating, screen printing, sintering and the like is generally subjected to single welding and series welding to form a battery string with a plurality of battery slices connected in series. The cell strings are further connected in series, in parallel or in series-parallel combination to form cell sheets which are arranged in an array mode and are electrically connected. And then, sequentially stacking the cover plate, the front packaging adhesive film, the arrayed battery piece, the back packaging adhesive film and the back plate, laminating and assembling the frames to form the solar battery assembly. In a solar cell module, the arrayed cell sheet is a main structure that absorbs sunlight and converts the sunlight into electrical energy. The back plate, the cover plate and the packaging adhesive film mainly play a role in protecting the battery piece. The frame mainly has the effects of increasing the strength of the solar cell module, improving the sealing performance of the solar cell module and prolonging the service life of the cell.

At present, with the decreasing of fossil energy reserves, solar power generation receives more and more attention. With the rapid development of solar power generation technology, the number of large-scale solar power stations is rapidly increasing. In the construction of solar power stations, it is common to mount solar modules on steel structural supports having inclined support surfaces and then to spread the rows of supports throughout the station.

In a solar power station, individual solar modules are fixed on a support in an inclined manner. When the angle between the incident sunlight and the solar cell module is small, the lower part (part close to the ground) of the solar cell module in the inclined state is easily shielded by other solar cell modules. In addition, since the frame of the solar cell module protrudes from the surface of the cover plate, foreign materials such as dust are easily accumulated and covered on the lower portion of the solar cell module. In practical applications, the lower portion of the solar cell module in the tilted state is easily shielded by other solar cell modules, dust, and the like. In this case, sunlight cannot be efficiently incident on the shielded portion of the solar cell module. At this time, the shielded part of the solar cell module cannot convert solar energy into electric energy, so that the generated energy is reduced; and the solar cell module can become a load, consume electric energy generated by other parts of the solar cell module, generate a hot spot effect and reduce the service life of the solar cell module.

In order to solve the technical problem, an embodiment of the utility model provides a solar module. The solar cell module can be used for array laying to form a solar power station, can be used independently or in combination and is laid on a roof, a wall surface and the like.

Fig. 1 shows a schematic structural diagram of a solar cell module, and fig. 2 shows a schematic structural diagram of another solar cell. As shown in fig. 1 and fig. 2, a solar cell module provided in an embodiment of the present invention includes a first cell string group 10 and a second cell string group 20.

As shown in fig. 1 and 2, the first battery string group 10 is electrically connected to the second battery string group 20. The first battery string 10 may be connected in parallel with the second battery string 20, or may be connected in series with the second battery string 20. When the first cell string group 10 is connected in parallel with the second cell string group 20, the current of the solar cell module is the sum of the currents of the first cell string group 10 and the second cell string group 20, and the voltage of the solar cell module is the voltage of the one of the first cell string group 10 and the second cell string group 20 with the smaller voltage. When the first cell string 10 is shielded and cannot effectively utilize solar energy to generate electric energy, the second cell string 20 can still work normally to convert the solar energy into electric energy.

When the first cell string group 10 is connected in series with the second cell string group 20, the voltage of the solar cell module is the sum of the voltages of the first cell string group 10 and the second cell string group 20, and the current of the solar cell module is the voltage of the one of the first cell string group 10 and the second cell string group 20 with smaller current.

As shown in fig. 1 and 2, the first battery string group 10 includes at least one first battery string 11. For example, the first battery string set 10 may include one first battery string 11, or may include a plurality of first battery strings 11. When the first battery string group 10 includes a plurality of first battery strings 11, the respective first battery strings 11 are electrically connected together. At this time, the first cell strings 11 may be connected in parallel to increase the current of the solar cell module, or the first cell strings 11 may be connected in series to increase the voltage of the first cell string group 10.

As shown in fig. 1 and 2, the second battery string set 20 includes at least one second battery string 21. For example, the second battery string set 20 may include one second battery string 21, or may include a plurality of second battery strings 21. When the second battery string set 20 includes a plurality of second battery strings 21, the respective second battery strings 21 are electrically connected together. Similarly, the voltage or the current of the second battery string 20 can be increased by the second battery string 20 in the same manner.

In practical applications, in order to obtain suitable voltage and current, a plurality of first battery strings 11 may be connected in parallel to form a first battery string set 10; the plurality of second battery strings 21 are connected in parallel together to form the second battery string group 20. Then, the first battery string group 10 and the second battery string group 20 are connected in series, that is, the plurality of first battery strings 11 in the first battery string group 10 and the plurality of second battery strings 21 in the second battery string group 20 are connected in series in a one-to-one correspondence manner.

Of course, a plurality of first battery strings 11 may be connected in series to form the first battery string group 10; the plurality of second battery strings 21 are connected in series to form the second battery string group 20. Then, the first battery string group 10 and the second battery string group 20 are connected in parallel, that is, the plurality of first battery strings 11 in the first battery string group 10 and the plurality of second battery strings 21 in the second battery string group 20 are connected in parallel in a one-to-one correspondence.

As shown in fig. 1 and 2, the first cell string 11 includes a plurality of first cells 111 connected in series, and the second cell string 21 includes a plurality of second cells 211 connected in series. When the number of the first battery strings 11 and the second battery strings 21 is plural, the number of the first battery pieces 111 included in each first battery string 11 may be the same as the number of the second battery pieces 211 included in each second battery string 21. At this time, the voltage of each first battery string 11 is the same as the voltage of each second battery string 21, and the problem of voltage mismatch when the first battery string group 10 and the second battery string group 20 are electrically connected can be avoided.

As shown in fig. 1 and 2, the area of each first cell 111 included in each first cell string 11 is larger than the area of each second cell 211 included in each second cell string 21. That is, the area of the second cell piece 211 is smaller than the area of the first cell piece 111, and the power of the cell piece is proportional to the area, so that the power of the second cell piece 211 is smaller than the power of the first cell piece 111. Accordingly, the power of the second string 21 having the same number of cells is smaller than that of the first string 11, and the power of the second string set 20 having the same number of cells is smaller than that of the first string set 10. At this time, the power of the second cell string set 20 in the entire solar cell module is small. When the solar cell module is specifically installed, the first cell string group 10 of the solar cell module can be close to the ground (lower part), and the second cell string group 20 of the solar cell module can be far away from the ground (upper part). When the second battery string set 20 is shielded, since the power of the shielded second battery string set 20 in the whole solar battery module is smaller, the power lost due to the shielding of the second battery string set 20 is smaller, and at the same time, the electric energy consumed by the second battery string set 20 as a load is also smaller. It is visible, the embodiment of the utility model provides a solar module can reduce and shelter from the generated energy loss that brings, weakens the hot spot effect to guarantee solar module's generated energy and life.

It should be understood that, when determining the area of the second cell piece 211 and the first cell piece 111, it is sufficient to ensure that the area of the second cell piece 211 is smaller than the area of the first cell piece 111. Specifically, the area of the second cell piece 211 may be 0.1 times, 0.2 times, 0.3 times, 0.4 times, 0.5 times, 0.6 times, 0.7 times, 0.8 times, 0.9 times, 0.95 times, etc. the area of the first cell piece 111.

In order to more reasonably allocate the area of the solar cell module, it can be statistically estimated that, in practical applications, the solar cell module may be exposed to dust, the area of other solar cell modules (shadow area), and the area of the solar cell module that is not blocked all the time and can be exposed to sunlight (light receiving area). Since the first cell string group 10 of the solar cell module is located in a shadow region which may be blocked and the second cell string group 20 is located in a light receiving region, the area allocation of the first cell string group 10 and the second cell string group 20 in the solar cell module can be adjusted according to the area of the shadow region and the area of the light receiving region. That is, the areas of the first cell piece 111 and the second cell piece 211 may be designed according to the area of the shaded region and the area of the light receiving region.

In addition, since the power of the first cell string group 10 occupies a relatively large area in the solar cell module, the area of the first cell string group 10 in the solar cell module can be increased, and the area of the second cell string group 20 can be decreased, thereby increasing the power of the solar cell module.

In order to achieve both the power and the shading loss of the solar cell module, the area ratio of the first cell piece 111 to the second cell piece 211 may be defined to be equal to the area ratio of the light receiving region to the shadow region. When the number of the first cells 111 included in the first cell string group 10 is the same as the number of the first cells 111 included in the second cell string group 20, the area ratio of the first cell string group 10 to the second cell string group 20 is equal to the area ratio of the first cells 111 to the second cells 211, and is equal to the area ratio of the light receiving region to the shaded region. In this case, the area of the second cell string set 20 is adapted to the area of the shaded region, and the area of the first cell string set 10 and the area of the second cell string set 20 in the solar cell module are reasonably allocated. In view of the increase of the power generation amount loss caused by the increase of the area ratio of the second battery string 20, the area of the second battery string 20 is reasonably controlled, and the power generation amount loss can be reduced.

It is understood that the area ratio of the second cell string set 20 may be appropriately increased and the area ratio of the first cell string set 10 may be decreased to ensure that the first cell string set 10 is always in the light receiving region without being blocked.

In practical application, the area of the light receiving area and the area of the shadow area on the solar cell module can be obtained through daily observation and statistical analysis. For example, a solar cell module having similar information such as size and position is observed, and the area of a shadow region is observed within a certain period of time. The data such as the area of the shadow region and the area of the light receiving region are processed to obtain information such as the change range of the area of the shadow region. Through statistical analysis, after the solar cell module is shielded, the minimum value of the area ratio of the light receiving area to the shadow area is generally 1:0.2, and the maximum value is generally 1: 0.7. In this case, the area ratio of the first cell 111 to the second cell 211 may be 1 (0.2-0.7). At this time, the areas of the first cell string group 10 and the second cell string group 20 of the solar cell module are distributed according to the area ratio, so that the requirements of more working conditions can be met, and the application range is wider.

Illustratively, the area ratio of the first cell piece 111 to the second cell piece 211 may be 1:0.2, 1:0.35, 1:0.5, 1:0.66, 1:0.7, and the like.

In practical applications, the shapes of the first cell piece 111 and the second cell piece 211 are various. The first cell piece 111 and the second cell piece 211 may be a sliced cell piece formed by cutting the solar cell piece 40 along a cutting line parallel to the edge of the solar cell piece 40, that is, a rectangular cell piece with a chamfer. At this time, the first cell 111 and the second cell 211 are regular in shape, so that dense arrangement is facilitated, and the power of the solar cell module can be improved.

The first cell piece 111 and the second cell piece 211 can also be sliced cell pieces formed by cutting the solar cell piece 40 along a cutting line having an included angle with the edge of the solar cell piece 40, that is, right-angled trapezoid cell pieces with chamfers or right-angled triangle cell pieces with chamfers. At this time, dense arrangement can be realized by the way that the oblique edges of two adjacent first battery pieces 111 or second battery pieces 211 are opposite, and the space utilization rate is improved.

The first cell piece 111 and the second cell piece 211 with different areas and different shapes can be a sliced cell piece formed by cutting one solar cell piece 40. Specifically, one solar cell 40 may be fabricated and then cut into two sliced cells (the first cell 111 and the second cell 211) by using laser or mechanical force. In the cutting process, the areas and the shapes of the first cell piece 111 and the second cell piece 211 can be conveniently controlled by designing the cutting position to obtain the first cell piece 111 and the second cell piece 211 with required sizes and shapes, and further control the area distribution and the layout of the first cell string group 10 and the second cell string group 20 in the solar cell module.

In a specific implementation, a cutting process may be used to cut the solar cell 40 into the first cell 111 and the second cell 211 with a set area ratio and a set shape.

For example, as shown in fig. 3, a parallel cutting line 41 parallel to the edge of the solar cell sheet 40 may be preset on the solar cell sheet 40, and the solar cell sheet 40 is divided into a first portion and a second portion by the parallel cutting line 41, and the area ratio of the first portion to the second portion of the solar cell sheet 40 is 1: 0.5. After the solar cell 40 is cut along the parallel cutting lines 41, the first cell piece 111 and the second cell piece 211 having an area ratio of 1:0.5 and a rectangular shape with a chamfer can be obtained. The first battery strings 11 may be formed by connecting a plurality of first battery cells 111 in series, and the first battery string group 10 may be formed by connecting a plurality of first battery strings 11 in series. The plurality of second battery cells 211 are connected in series to form a second battery string 21, and the plurality of second battery strings 21 are connected in series to form a second battery string group 20. The solar cell module shown in fig. 1 can be obtained by connecting the first cell string group 10 and the second cell string group 20 in parallel.

For another example, as shown in fig. 4, a cutting line having an angle with the edge of the solar cell 40, that is, an oblique cutting line 42, may be preset on the solar cell 40. The oblique cutting line 42 divides the solar cell 40 into a first portion and a second portion having an area ratio of 1:0.7 and in the shape of a right trapezoid with a chamfer. After the solar cell 40 is cut along the oblique cutting line 42, the first cell piece 111 and the second cell piece 211 having an area ratio of 1:0.7 and a shape of a right trapezoid with a chamfer can be obtained. The first battery strings 11 may be formed by connecting a plurality of first battery cells 111 in series, and the first battery string group 10 may be formed by connecting a plurality of first battery strings 11 in series. The plurality of second battery cells 211 are connected in series to form a second battery string 21, and the plurality of second battery strings 21 are connected in series to form a second battery string group 20. The solar cell module shown in fig. 2 can be obtained by connecting the first cell string group 10 and the second cell string group 20 in parallel.

As shown in fig. 5, in order to further improve the power generation amount of the solar cell module, the solar cell module provided by the embodiment of the present invention may further include a third cell string group 30. The third battery string set 30 includes at least one third battery string 31, and each third battery string 31 includes a third battery piece 311 having an area greater than or equal to an area of the second battery piece 211. At this time, the solar cell module includes three sets of cell strings, and the power ratio of the three sets of cell strings is increased. In practical applications, in order to reduce the adverse effect of the shielding on the solar cells, the second cell string group 20, the first cell string group 10 and the third cell sheet group may be arranged in sequence. At this time, the third cell string group 30 having the largest power ratio is far from the shadow region (the lower portion of the solar cell module), and when the second cell string group 20 or the first cell string group 10 is blocked, the power loss of the solar cell module can be reduced as much as possible, so that the power generation amount loss is reduced, and the hot spot effect is reduced.

The embodiment of the utility model provides a still provide a solar power station. The solar power station comprises a plurality of solar cell modules arranged in an array.

The embodiment of the utility model provides a solar power station's beneficial effect and above-mentioned solar module's beneficial effect, no longer give unnecessary details here.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The solar cell module is characterized by comprising a first cell string group and a second cell string group, wherein the first cell string group is electrically connected with the second cell string group, the first cell string group comprises at least one first cell string, the second cell string group comprises at least one second cell string, and the area of each first cell piece contained in each first cell string is larger than that of each second cell piece contained in each second cell string.

2. The solar cell module as claimed in claim 1, wherein the area ratio of the first cell piece to the second cell piece is 1 (0.2-0.7).

3. The solar cell module as claimed in claim 1, wherein the first cell piece and the second cell piece are sliced cell pieces formed by cutting solar cell pieces.

4. The solar cell module according to claim 3, wherein the first cell piece and the second cell piece are sliced cell pieces formed by cutting solar cell pieces along cutting lines parallel to edges of the solar cell pieces, or,

the first cell piece and the second cell piece are cut cell pieces formed by cutting the solar cell pieces along cutting lines with included angles with the edges of the solar cell pieces.

5. The solar cell assembly of claim 1 wherein the first cell string set comprises a plurality of first cell strings and the second cell string set comprises a plurality of second cell strings, each of the first cell strings being electrically connected together and each of the second cell strings being electrically connected together.

6. The solar cell assembly of claim 5 wherein the first plurality of cell strings are connected together in parallel and the second plurality of cell strings are connected together in parallel, the first cell string set being connected together in series with the second cell string set.

7. The solar cell module according to claim 6, further comprising a third cell string set, wherein the third cell string set comprises at least one third cell string, and each third cell string comprises a third cell slice with an area greater than or equal to that of the first cell slice.

8. The solar cell assembly of claim 5 wherein the first plurality of cell strings are connected together in series and the second plurality of cell strings are connected together in series, the first cell string set and the second cell string set being connected together in parallel.

9. The solar cell module according to any one of claims 1 to 8, wherein the number of the first cells included in each of the first cell strings is the same as the number of the second cells included in each of the second cell strings.

10. A solar power station comprising a plurality of solar cell modules according to any one of claims 1 to 9 arranged in an array.

Images