TWM679238U - Solar cell stack module - Google Patents

Abstract

A solar cell stack module includes a first substrate, a first encapsulation layer, a silicon cell group, a second encapsulation layer, a perovskite cell group, and a second substrate. The first encapsulation layer is disposed on the first substrate. The silicon cell group is disposed on the first encapsulation layer. The silicon cell group includes a plurality of silicon cell units electrically connected to each other and arranged along a first direction and a second direction. The second encapsulation layer is disposed on the silicon cell group. The perovskite cell group is disposed on the second encapsulation layer and does not directly contact the silicon cell group. The perovskite cell group includes a plurality of perovskite cell units electrically connected to each other and arranged along the first direction and the second direction. The second substrate is disposed on the perovskite cell group.

Description

Solar cell multilayer module

This creation relates to a solar cell stack module.

Currently, commonly used solar cells can be broadly classified according to their manufacturing materials into silicon-based semiconductor cells (hereinafter referred to as silicon cells), cadmium telluride (CdTe) thin-film cells, copper indium gallium selenide (CIGS) thin-film cells, dye-sensitized thin-film cells, and organic material cells. However, regarding silicon cells, although they can absorb and utilize light in the range of approximately 300 nm to approximately 1,200 nm, power loss will occur during the later-stage module fabrication process due to factors such as multi-chip and large-area assembly, thereby affecting the photoelectric conversion efficiency of the solar cell.

Therefore, in practical operation, the photoelectric conversion efficiency of a solar cell module whose photoelectric conversion unit consists solely of silicon cells will be lower than that of the silicon cells themselves. Accordingly, how to improve the photoelectric conversion efficiency of solar cell modules containing silicon cells is one of the remaining technical problems to be solved in this field.

In view of this, some embodiments propose a solar cell stack module comprising a first substrate, a first encapsulating layer, a silicon crystal battery pack, a second encapsulating layer, a perovskite battery pack, and a second substrate. The first encapsulating layer is located on the first substrate. The silicon crystal batteries are located on the first encapsulating layer, and the silicon crystal battery pack comprises a plurality of silicon crystal battery cells electrically connected to each other and arranged along a first direction and a second direction, respectively. The second encapsulating layer is located on the silicon crystal battery pack. The perovskite battery pack is located on the second encapsulating layer and does not directly contact the silicon crystal battery pack. The aforementioned perovskite battery pack includes a plurality of perovskite battery cells, which are electrically connected to each other and arranged along a first direction and a second direction, respectively. The aforementioned second substrate is located on the perovskite battery pack.

In some embodiments, the total output voltage of the aforementioned perovskite battery pack is equal to the total output voltage of the aforementioned silicon battery pack.

In some embodiments, the silicon battery pack is electrically connected in parallel with the perovskite battery pack.

In some embodiments, the aforementioned plurality of perovskite battery cells are electrically connected to each other to form a plurality of perovskite battery strings, each perovskite battery string extending along a first direction and the perovskite battery strings being spaced apart along a second direction.

In some embodiments, each calcite battery comprises a first part and a second part, wherein the number of calcite battery cells in the first part is equal to the number of calcite battery cells in the second part.

In some embodiments, the first part is electrically connected in parallel with the second part.

In some embodiments, adjacent perovskite battery strings along the second direction are electrically connected in parallel.

In some embodiments, the second substrate is a transparent substrate.

In some embodiments, at least one of the first and second encapsulation layers comprises at least one selected from the group consisting of ethylene vinyl acetate (EVA) and polyolefin elastomer (POE).

In some embodiments, the aforementioned solar cell stack module further includes a wavelength adjustment layer located between the second substrate and the perovskite battery pack.

In some embodiments, the wavelength adjustment layer is adapted to receive a light and adjust the light whose wavelength is less than or equal to 420 nm to a light whose wavelength is greater than 420 nm, so as to output the light.

In some embodiments, the wavelength adjustment layer is adapted to receive a light and adjust the light whose wavelength is in the range of 280 nm to 420 nm to be a light with a wavelength greater than 420 nm, so as to output the light.

In some embodiments, the aforementioned perovskite battery pack is adapted to absorb light with a wavelength less than or equal to 700 nm, and the aforementioned silicon battery pack is adapted to absorb light with a wavelength greater than or equal to 700 nm.

In some embodiments, the aforementioned perovskite battery pack is adapted to absorb light with wavelengths in the range of 280 nm to 700 nm, and the aforementioned silicon battery pack is adapted to absorb light with wavelengths in the range of 700 nm to 1,200 nm.

The following detailed description of the features and advantages of this invention is sufficient to enable anyone skilled in the relevant art to understand the technical content of this invention and implement it accordingly. Furthermore, based on the content disclosed in this specification, the scope of the patent application, and the drawings, anyone skilled in the relevant art can easily understand the purpose and advantages of this invention.

The term "approximately" can vary across different technologies and within the range of deviations understood by a person of ordinary skill in the relevant technical field. When used in conjunction with a specific distance or size, "approximately" can be interpreted as not excluding minor deviations from the specified distance or size.

The term "between ... and ..." refers to the upper limit value, the lower limit value, and any value between these two upper and lower limits. For example, the term "between 280 nm and 700 nm" refers to any value that can be ≥280 nm and ≤700 nm.

Please refer to Figures 1A and 1B. Figure 1A is a top view of the solar cell stacked module 1 according to the first embodiment; Figure 1B is a cross-sectional view of the solar cell stacked module 1 shown in Figure 1A along section line A-A. In Figures 1A and 1B, a solar cell stacked module 1 includes a first substrate 10, a first encapsulating layer 11, a silicon crystal battery pack 12, a second encapsulating layer 13, a perovskite battery pack 14, and a second substrate 16. The first encapsulating layer 11 is located on the first substrate 10. The aforementioned silicon crystal battery pack 12 is located on the first encapsulation layer 11. The silicon crystal battery pack 12 includes a plurality of silicon crystal battery cells 120, which are electrically connected to each other and arranged along a first direction (e.g., the X direction shown in Figures 1A and 1B) and a second direction (e.g., the Y direction shown in Figures 1A and 1B), respectively. The first direction and the second direction are different from each other, for example, the first direction and the second direction are orthogonal to each other. The aforementioned second encapsulation layer 13 is located on the silicon crystal battery pack 12. The aforementioned perovskite battery pack 14 is located on the second encapsulation layer 13 and does not directly contact the silicon crystal battery pack 12. The aforementioned perovskite battery pack 14 includes a plurality of perovskite battery cells 140, which are electrically connected to each other and arranged along the first direction (e.g., the X direction shown in FIG. 1A and FIG. 1B) and the second direction (e.g., the Y direction shown in FIG. 1A and FIG. 1B), respectively. The aforementioned second substrate 16 is located on the perovskite battery pack 14. Accordingly, in some embodiments, the solar cell stack module 1 includes at least a perovskite battery pack 14 and a silicon battery pack 12. After the light L (e.g., sunlight) enters the interior of the solar cell stack module 1 from above the solar cell stack module 1 via the second substrate 16, it will first pass through the perovskite battery pack 14 and then through the silicon battery pack 12. In this process, the permafrost battery pack 14 can first absorb a portion of the light L (e.g., light L with a relatively short wavelength) for photoelectric conversion, and the silicon battery pack 12 then absorbs another portion of the light L (e.g., light L with a relatively long wavelength) for photoelectric conversion. Therefore, the solar cell stack module 1 as a whole can make fuller use of and absorb light L with various wavelength ranges, thereby providing a better overall photoelectric conversion efficiency.

For example, taking a solar cell module (containing 120 silicon crystal cell units 120) with a length and width of 2 m and 1 m respectively, and a solar cell stacked module 1 (containing at least 120 perovskite cell units 140) as examples, compared to the photoelectric conversion efficiency of a solar cell module whose photoelectric conversion unit only includes silicon crystal cell array 12 (approximately 23.1%; power generation of approximately 500 W), the photoelectric conversion efficiency of the solar cell stacked module 1, whose photoelectric conversion unit at least includes silicon crystal cell array 12 and perovskite cell array 14, is approximately 27.0% (power generation of approximately 590 W). W), an increase of approximately 3.9% (=27.0%-23.1%). It can be seen that the solar cell stacked module 1, which includes at least silicon cell array 12 and perovskite cell array 14, can indeed have a better overall photoelectric conversion efficiency.

Furthermore, the power output of the aforementioned solar cell stack module 1 (approximately 590 W) is obtained by summing the power output contributed by the silicon cell stack 12 (approximately 240 W, accounting for approximately 40.7% (=240 W/590 W)) and the power output contributed by the perovskite cell stack 14 (approximately 350 W, accounting for approximately 59.3% (=350 W/590 W)). In other words, corresponding to the light L that the permafrost battery pack 14 can absorb (its power generation is approximately 350 W), the power generation of the solar cell module whose photoelectric conversion unit only includes the silicon battery pack 12 is only 260 W (=500 W-240 W), a significant reduction of 90 W (=350 W-260 W). Based on this, in some embodiments, the solar cell stack module 1 as a whole can indeed more fully utilize and absorb light L with various wavelength ranges, thereby providing a greater power generation based on the same incident light amount (for example, from 260 W to 350 W, an increase of approximately 90 W, an improvement rate of approximately 34.6% (=(350-260)/260)).

The first substrate 10 (as shown in FIG. 1B) can be any component with fixing and load-bearing functions to serve as the backplane of the solar cell stack module 1. The first substrate 10 can be a transparent substrate or a non-transparent substrate, such as, but not limited to, glass, a single-sided fluorine film composite backplane, a double-sided fluorine film composite backplane, or a fluorine-free backplane.

The first encapsulating layer 11 (as shown in FIG. 1B) can be any component with adhesive and encapsulation functions to at least protect the bottom of the silicon crystal battery pack 12. The first encapsulating layer 11 may, for example, comprise at least one of the group consisting of ethylene vinyl acetate (EVA) and polyolefin elastomer (POE). That is, the first encapsulating layer 11 may, for example, comprise ethylene vinyl acetate (EVA), or comprise polyolefin elastomer (POE), or comprise both ethylene vinyl acetate (EVA) and polyolefin elastomer (POE).

The aforementioned silicon cell array 12 (as shown in Figure 1B) may include a plurality of silicon cell units 120, each of which may be an independent monocrystalline silicon solar cell or a polycrystalline silicon solar cell. The silicon cell units 120 are electrically connected to each other to form a plurality of silicon cell strings A1’, A2’, A3’ (as shown in Figure 1B). Each silicon cell string A1’, A2’, A3’ may extend along a first direction (e.g., the X direction shown in Figure 1B), and the silicon cell strings A1’, A2’, A3’ may be spaced apart along a second direction (e.g., the Y direction shown in Figure 1B).

In some embodiments, each silicon cell string A1’, A2’, A3’ (as shown in Figure 1B) comprises a first part (not otherwise labeled) and a second part (not otherwise labeled). In some embodiments, the silicon cell units 120 of the first part are electrically connected in series with each other, the silicon cell units 120 of the second part are electrically connected in series with each other, and the first part is electrically connected in parallel to the second part. In some embodiments, the number of silicon cell units 120 in the first part of silicon cell strings A1’, A2’, A3’ is equal to the number of silicon cell units 120 in the second part of silicon cell strings A1’, A2’, A3’. Accordingly, the silicon cell units 120 in the first part and the second part can be used for photoelectric conversion, thereby providing corresponding electrical energy. Therefore, in some embodiments, if any part of the silicon cell unit 120 fails to operate, the other part of the silicon cell unit 120 connected in parallel can still perform photoelectric conversion normally, so that the entire silicon cell group 12 will not be able to perform photoelectric conversion.

The second encapsulating layer 13 (as shown in Figure 1B) can be any component with adhesive and encapsulation functions to at least protect the top of the silicon crystal battery pack 12 and the bottom of the perovskite battery pack 14, thereby preventing direct contact between the silicon crystal battery pack 12 and the perovskite battery pack 14 (e.g., preventing direct electrical connection between them). Accordingly, if there is a need to electrically connect the silicon crystal battery pack 12 and the perovskite battery pack 14, in some embodiments, the silicon crystal battery pack 12 and the perovskite battery pack 14 are electrically connected through indirect contact (e.g., through various conductive elements). The second encapsulation layer 13 may contain, for example, vinyl acetate copolymer (EVA), or polyolefin elastomer (POE), or a mixture of vinyl acetate copolymer (EVA) and polyolefin elastomer (POE). The second encapsulation layer 13 and the first encapsulation layer 11 may be made of the same or different materials, and there is no limitation.

The aforementioned perovskite battery pack 14 (as shown in FIG. 1B) may include a plurality of perovskite battery cells 140. The perovskite battery cells 140 are electrically connected to each other (e.g., electrically in parallel), and may extend, for example, along a first direction (e.g., the X direction shown in FIG. 1B) to form a plurality of perovskite battery strings A1, A2, A3 (as shown in FIG. 1B). The perovskite battery strings A1, A2, A3 may be spaced apart along a second direction (e.g., the Y direction shown in FIG. 1B). Adjacent perovskite battery strings A1, A2, A3 are electrically connected in parallel. The perovskite battery strings A1, A2, and A3 can correspond to the silicon battery strings A1’, A2’, and A3’ (e.g., a four-terminal (4T) solar cell stack module distinguished by stacking and electrical matching). In some embodiments, each perovskite battery string A1, A2, and A3 can simultaneously correspond to the silicon battery strings A1’, A2’, and A3’ extending along a first direction (e.g., the X direction shown in FIG. 1B), and the perovskite battery strings A1, A2, and A3 can also simultaneously correspond to the silicon battery strings A1’, A2’, and A3’ spaced apart along a second direction (e.g., the Y direction shown in FIG. 1B). The term "corresponding" as used above means that the configuration positions of the perovskite battery strings A1, A2, and A3 can be configured according to the configuration positions of the silicon battery strings A1', A2', and A3', respectively. For example, perovskite battery string A1 overlaps silicon battery string A1' on a projection plane (e.g., the XY plane shown in Figure 1B), perovskite battery string A2 overlaps silicon battery string A2' on the same projection plane (e.g., the XY plane shown in Figure 1B), and so on. In some embodiments, the perovskite battery strings A1, A2, and A3 are not configured to correspond to the silicon battery strings A1’, A2’, and A3’ (e.g., in a two-terminal (2T) solar cell stack module distinguished by stacking method and electrical matching); that is, the perovskite battery strings A1, A2, and A3 are positioned on the projection plane and do not overlap with the silicon battery strings A1’, A2’, and A3’ respectively.

In some embodiments, the aforementioned perovskite battery cells 140 extend along a first direction (e.g., the X direction shown in FIG. 1B) and are spaced apart by a first spacing (not otherwise indicated), which is formed by laser cutting. In some embodiments, the aforementioned perovskite battery strings A1, A2, A3 are spaced apart by a second spacing (not otherwise indicated) along a second direction (e.g., the Y direction shown in FIG. 1B), which is also formed by laser cutting. Therefore, in some embodiments, each perovskite battery cell 140 can be quickly manufactured according to different specifications and requirements, thereby simplifying manufacturing time and reducing costs.

Please refer to Figure 2, which is a top view of the solar cell stacked module 1 according to the second embodiment. In Figure 2, each perovskite battery string A1, A2, A3 includes a first part S1 and a second part S2, and the number of perovskite battery cells 140 in the first part S1 is equal to the number of perovskite battery cells 140 in the second part S2. In some embodiments, the first part S1 is electrically connected in parallel with the second part S2. Accordingly, the perovskite battery cells 140 in both the first part S1 and the second part S2 can be used for photoelectric conversion, thereby providing corresponding electrical energy. Therefore, in some embodiments, if any part of the calcite battery cell 140 fails to operate, the other part of the calcite battery cell 140 connected in parallel can still perform photoelectric conversion normally, so that the entire calcite battery pack 14 will not be able to perform photoelectric conversion.

In some embodiments, the total output voltage of the aforementioned perovskite battery pack 14 (as shown in Figures 1A and 1B) is configured to be equal to the total output voltage of the silicon battery pack 12. For example, the number of perovskite battery cells 140 and silicon battery cells 120 can be adjusted according to the output voltage of each perovskite battery cell 140 and the output voltage of each silicon battery cell 120, so that the total output voltage of the perovskite battery pack 14 is equal to the total output voltage of the silicon battery pack 12 (e.g., in a four-terminal (4T) solar cell stack module distinguished by stacking and electrical matching).

In some embodiments, since the total output voltage of the perovskite battery pack 14 (as shown in Figures 1A and 1B) is configured to be equal to the total output voltage of the silicon battery pack 12, a voltage difference is not formed between the two battery packs (i.e., silicon battery pack 12 and perovskite battery pack 14). Therefore, the silicon battery pack 12 can be further electrically connected in parallel with the perovskite battery pack 14, so as not to cause the two battery packs (i.e., silicon battery pack 12 and perovskite battery pack 14) to charge each other, thereby affecting the photoelectric conversion efficiency or even damaging the solar cell stack module 1.

In some embodiments, the aforementioned perovskite battery pack 14 is adapted to absorb light with a wavelength less than or equal to 700 nm (e.g., but not limited to light with a wavelength between 280 nm and 700 nm), and the aforementioned silicon battery pack 12 is adapted to absorb light with a wavelength greater than or equal to 700 nm (e.g., but not limited to light with a wavelength between 700 nm and 1,200 nm). Accordingly, in some embodiments, after light L (as shown in FIG. 1B) enters the solar cell stack module 1 through the second substrate 16, light with a wavelength less than or equal to 700 nm in light L can first be absorbed by the perovskite battery pack 14. Because in the aforementioned wavelength range (i.e., wavelengths less than or equal to 700 nm), compared to the photoelectric conversion efficiency of the silicon cell array 12 (e.g., approximately 12.0% (=23.1%*260 W/500 W); its power generation is approximately 260 W), the photoelectric conversion efficiency of the perovskite cell array 14 can have a relatively higher conversion efficiency (e.g., approximately 13.7% (=23.1%*350 W/590 W); its power generation is approximately 350 W), representing an increase of approximately 34.6% (=(350 W-260 W)/260 W). W), thereby enabling the solar cell stacked module 1 to more fully utilize and absorb light L with various wavelength ranges, thereby providing a better total photoelectric conversion efficiency (e.g., from about 23.1% to about 27.0%, an increase of about 3.9% (=27.0%-23.1%)).

The second substrate 16 (as shown in FIG. 1B) can be any element with light transmission function, serving as a light guide plate for the solar cell stack module 1. The second substrate 16 can be a transparent substrate, such as, but not limited to, glass.

Please refer to Figures 3A and 3B. Figure 3A is a top view of the solar cell stacked module 1 according to the third embodiment; Figure 3B is a cross-sectional view of the solar cell stacked module 1 shown in Figure 3A along section line B-B. In Figures 3A and 3B, some embodiments of the solar cell stacked module 1 further include a wavelength adjustment layer 15, which is located between the second substrate 16 and the perovskite battery pack 14. The wavelength adjustment layer 15 described above can be any element that has the function of adjusting the wavelength of a portion of the incident light to output wavelength-adjusted light; for example, the wavelength adjustment layer 15 can be any element that has a redshift function (i.e., causing an increase in wavelength and a decrease in frequency, and shifting the spectral lines towards the red end of the spectrum) to convert shorter wavelength light into longer wavelength light. The wavelength adjustment layer 15 described above includes, for example but not limited to, at least one of the following: ethylene-vinyl acetate copolymer (EVA), expanded polyethylene (EPE), poly(oxyethylene) (POE), and thermoplastic polyolefin (TPO). In some embodiments, the wavelength adjustment layer 15 may also contain a benzotriazole derivative, such as, but not limited to, 4,7-diphenyl-2H-benzotriazole, 4,7-diphenyl-2-methyl-benzotriazole, or other benzotriazole derivatives having similar chemical structures and physicochemical properties. Therefore, in some embodiments, the wavelength adjustment layer 15 can be used to adjust the wavelength of the light L entering the perovskite battery pack 14 according to its characteristics (e.g., a shorter lifespan due to higher light decay). This can be achieved by converting an ultraviolet light source into a longer-wavelength visible light source, thereby protecting the perovskite battery pack 14 and extending its lifespan. In some embodiments, research by the inventors has confirmed that the wavelength adjustment layer 15 can further extend the lifespan of the perovskite battery pack 14 (and even the entire solar cell stack module 1) from approximately 10 years to approximately 30 years.

In some embodiments, the wavelength adjustment layer 15 is adapted to receive light L (as shown in FIG. 3B) and adjust light in light L whose wavelength is less than or equal to 420 nm (e.g., but not limited to light whose wavelength is in the range of 280 nm to 420 nm) to light whose wavelength is greater than 420 nm, so as to output light L with adjusted wavelength.

Please refer to Figure 4 and Table 1. Figure 4 is a comparison of the transmittance of the conventional light-transmitting layer and the wavelength adjustment layer 15 used in some embodiments at different transmittance wavelengths. Table 1 summarizes the transmittance wavelengths corresponding to approximately 30% and 80% for the conventional light-transmitting layer and the wavelength conversion layer 15 used in some embodiments, as shown in Figure 4.

Table 1: The transmitted light wavelengths corresponding to a transmittance of approximately 30% and 80%, respectively, for the conventional light-transmitting layer shown in Figure 4 and the wavelength adjustment layer 15 used according to some embodiments. Transmitted light wavelength (nm) Transmittance is approximately 30%. Transmittance is approximately 80%. Comparative example The known light-transmitting layer 253 305 Implementation Example 1 Wavelength adjustment layer 384 398 Implementation Example 2 Wavelength adjustment layer 429 441

As shown in Figure 4 and Table 1 above, as a comparative example, when light is passed through a conventional "transmitting layer" (as shown in Figure 4), the transmitted light wavelength corresponding to a transmittance of about 30% is about 253 nm, and the transmitted light wavelength corresponding to a transmittance of about 80% is about 305 nm.

As can be seen from Figure 4 and Table 1 above, as some embodiments of this invention (i.e., embodiment 1), after passing the same light into the "wavelength adjustment layer" (i.e., the wavelength adjustment layer 15 as shown in Figure 4), the transmitted light wavelength corresponding to approximately 30% transmittance is approximately 384 nm (an increase of approximately 131 nm compared to the comparative example), and the transmitted light wavelength corresponding to approximately 80% transmittance is approximately 398 nm (an increase of approximately 93 nm compared to the comparative example). Both of them are redshifted from the ultraviolet band to the violet band.

As can be seen from Figure 4 and Table 1 above, as some embodiments of this invention (i.e., embodiment 2), after passing the same light into the "wavelength adjustment layer" (i.e., the wavelength adjustment layer 15 as shown in Figure 4), the transmitted light wavelength corresponding to approximately 30% transmittance is approximately 429 nm (an increase of approximately 176 nm compared to the comparative example), and the transmitted light wavelength corresponding to approximately 80% transmittance is approximately 441 nm (an increase of approximately 136 nm compared to the comparative example). Both of them are red-shifted from the ultraviolet light band to the blue-violet light band.

Therefore, in some embodiments, the ultraviolet light can be adjusted to violet or blue-violet light (or even blue light) through the wavelength adjustment layer 15, thereby protecting the calcite battery pack 14 and extending its service life.

In summary, in some embodiments, through the stacking of perovskite and silicon cell arrays as photoelectric conversion units, light entering the solar cell stack module first passes through the perovskite cell array and then through the silicon cell array. This allows the solar cell stack module as a whole to more fully utilize and absorb light with various wavelength ranges, thereby providing superior overall photoelectric conversion efficiency and power generation. Furthermore, in some embodiments, by using a wavelength adjustment layer disposed above the perovskite battery pack, at least a portion of the light wavelength is adjusted (e.g., redshifted) before passing through the perovskite battery pack. This prevents unadjusted light (e.g., ultraviolet light) from entering the perovskite battery pack and causing damage (e.g., light decay). Therefore, in some embodiments, through the wavelength adjustment layer disposed above the perovskite battery pack, the solar cell stack module can also have perovskite battery packs with an even longer service life, thereby improving the overall service life of the solar cell stack module.

Although the present invention is disclosed above with reference to the aforementioned embodiments, it is not intended to limit the present invention. Anyone skilled in similar techniques may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be determined by the scope of the patent application attached to this specification.

1: Solar cell stack module; 10: First substrate; 11: First encapsulation layer; 12: Silicon crystal battery pack; 120: Silicon crystal battery unit; 13: Second encapsulation layer; 14: Perovskite battery pack; 140: Perovskite battery unit; 15: Wavelength adjustment layer; 16: Second substrate; A1, A2, A3: Perovskite battery string; A1’, A2’, A3’: Silicon crystal battery string; L: Light ray; S1: First part; S2: Second part; X, Y, Z: Coordinate axes; A-A, B-B: Section lines.

This disclosure is best understood when read in conjunction with the accompanying diagrams in the following detailed description. It should be emphasized that, in accordance with industry standard practice, the features are not drawn to scale and are for illustrative purposes only. In fact, the dimensions of the features may be arbitrarily increased or decreased for clarity of explanation. Figure 1A is a top view schematic diagram of a solar cell stacked module according to a first embodiment; Figure 1B is a cross-sectional schematic diagram of the solar cell stacked module shown in Figure 1A along section line A-A; Figure 2 is a top view schematic diagram of a solar cell stacked module according to a second embodiment; Figure 3A is a top view schematic diagram of a solar cell stacked module according to a third embodiment; Figure 3B is a cross-sectional schematic diagram of the solar cell stacked module shown in Figure 3A along section line B-B; and Figure 4 is a comparison graph of the transmittance of a conventional light-transmitting layer and a wavelength adjustment layer used according to some embodiments at different wavelengths of transmitted light.

10: First substrate

11: First sealing layer

12: Silicon Crystal Battery Pack

120: Silicon Crystal Battery Unit

13: Second sealing layer

14: Calcium-Titanium Ore Battery Pack

140: Calcium TiO2 Battery Unit

16: Second substrate

A1, A2, A3: Calcium-titanium ore battery string

A1’, A2’, A3’: Silicon crystal battery string

L:Light

X, Y, Z: coordinate axes

A-A: Section lines

Claims (14)

A solar cell stack module includes: a first substrate; a first encapsulation layer disposed on the first substrate; a silicon cell assembly disposed on the first encapsulation layer, the silicon cell assembly including a plurality of silicon cell units electrically connected to each other and respectively disposed along a first direction and a second direction; and a second encapsulation layer disposed on the silicon cell assembly. A perovskite battery pack, located on the second encapsulation layer and not in direct contact with the silicon battery pack, the perovskite battery pack comprising a plurality of perovskite battery cells electrically connected to each other and respectively arranged along the first direction and the second direction; and a second substrate located on the perovskite battery pack. The solar cell stack module as described in claim 1, wherein the total output voltage of the perovskite battery pack is equal to the total output voltage of the silicon battery pack. The solar cell stack module as described in claim 2, wherein the silicon cell array is electrically connected in parallel to the perovskite cell array. The solar cell stack module as described in claim 1, wherein the plurality of perovskite cell units are electrically connected to each other to form a plurality of perovskite cell strings, each of the perovskite cell strings extends along the first direction, and the plurality of perovskite cell strings are spaced apart along the second direction. The solar cell stack module as described in claim 4, wherein each of the perovskite battery strings comprises a first portion and a second portion, wherein the number of perovskite battery cells in the first portion is equal to the number of perovskite battery cells in the second portion. The solar cell stacked module as described in claim 5, wherein the first part is electrically connected in parallel to the second part. The solar cell stack module as described in claim 5 or 6, wherein two adjacent perovskite cell strings along the second direction are electrically connected in parallel with each other. The solar cell stack module as described in claim 1, wherein the second substrate is a transparent substrate. The solar cell stack module as claimed in claim 1, wherein at least one of the first encapsulation layer and the second encapsulation layer comprises at least one selected from the group consisting of ethylene vinyl acetate (EVA) and polyolefin elastomer (POE). The solar cell stack module as described in claim 1 further includes a wavelength adjustment layer located between the second substrate and the perovskite battery pack. The solar cell stack module as described in claim 10, wherein the wavelength adjustment layer is adapted to receive a light and adjust light with a wavelength less than or equal to 420 nm to light with a wavelength greater than 420 nm, so as to output the light. The solar cell stack module as described in claim 10, wherein the wavelength adjustment layer is adapted to receive a light and adjust the light whose wavelength is in the range of 280 nm to 420 nm to a light with a wavelength greater than 420 nm, so as to output the light. The solar cell stack module as claimed in claim 1, wherein the perovskite cell array is adapted to absorb light with a wavelength less than or equal to 700 nm, and the silicon cell array is adapted to absorb light with a wavelength greater than or equal to 700 nm. The solar cell stack module as claimed in claim 1, wherein the perovskite cell array is adapted to absorb light with wavelengths in the range of 280 nm to 700 nm, and the silicon cell array is adapted to absorb light with wavelengths in the range of 700 nm to 1,200 nm.