Solar cell system

Abstract

The utility model relates to a solar cell system, and the system comprises a cell module, the cell module comprises a plurality of laminated cell assemblies arranged in a first direction, each laminated cell assembly comprises a perovskite cell and a crystalline silicon cell, and the perovskite cell and the crystalline silicon cell are stacked in a second direction; a plurality of perovskite cells in the cell module are electrically connected in series in sequence to form a perovskite cell string; a plurality of crystalline silicon cells in the cell module are electrically connected in series in sequence to form a crystalline silicon cell string; the junction station comprises an output end and an input end, the input end corresponds to the perovskite cell strings, the input end comprises a first terminal and a second terminal, the first terminal is electrically connected with the positive electrode of the corresponding perovskite cell string, and the second terminal is electrically connected with the negative electrode of the corresponding perovskite cell string. In conclusion, according to the solar cell system in the embodiment, the risk of misconnection of lines in the solar cell system can be reduced, and the working safety and stability of the solar cell system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic technology, in particular to a solar cell system. BACKGROUND

[0002] Solar energy has the advantages of safety, non-pollution, and no restriction by geographical conditions, and is the most widely used and most promising renewable energy. Among various technologies for effectively utilizing solar energy, photovoltaic power generation is undoubtedly one of the most promising directions. Among various new solar cells, perovskite solar cells have the advantages of high efficiency, solution preparation, and low cost.

[0003] A laminated solar cell has attracted more and more attention due to its high spectral utilization rate and conversion efficiency. In the prior art, perovskite and crystalline silicon are laminated to make a perovskite laminated solar cell, so as to obtain higher power generation efficiency than single-junction silicon cells or perovskite cells. The perovskite layer and the crystalline silicon layer of the perovskite laminated solar cell both output a positive electrode and a negative electrode. The positive electrode of the perovskite layer is electrically connected to the positive electrode of the crystalline silicon layer, and the negative electrode of the perovskite layer is electrically connected to the negative electrode of the crystalline silicon layer.

[0004] In the related art, the open-circuit voltage of the perovskite layer in each perovskite laminated solar cell is different from the open-circuit voltage of the crystalline silicon layer. To generate the same voltage, the number of perovskite layers in series and the number of crystalline silicon layers in series need to be different. With the increase in the number of perovskite layers in series and the number of crystalline silicon layers in series, the wires for the perovskite layers in series are prone to misconnection with the wires for the crystalline silicon layers in series, causing problems such as short circuit and arcing. UTILITY MODEL CONTENT

[0005] Therefore, it is necessary to propose a solar cell system to solve the problem that the wires for the perovskite layers in series are prone to misconnection with the wires for the crystalline silicon layers in series, causing problems such as short circuit and arcing.

[0006] A solar cell system comprises:

[0007] At least one battery module, the battery module comprising a plurality of laminated cell assemblies arranged along a first direction, the laminated cell assemblies comprising a perovskite cell and a crystalline silicon cell, the perovskite cell and the crystalline silicon cell being arranged in layers along a second direction, the first direction being arranged intersecting the second direction;

[0008] The plurality of perovskite cells in the battery module are electrically connected in series in turn and form a perovskite cell string; the plurality of crystalline silicon cells in the battery module are electrically connected in series in turn and form a crystalline silicon cell string;

[0009] The current collector comprises at least one output end and at least one input end, the input end corresponds to the perovskite battery string, the input end comprises a first terminal and a second terminal, the first terminal is electrically connected with the positive electrode of the corresponding perovskite battery string, and the second terminal is electrically connected with the negative electrode of the corresponding perovskite battery string.

[0010] In one of the embodiments, the solar cell system comprises a plurality of the battery modules; the plurality of the battery modules are arranged along the second direction, and the crystalline silicon cell strings in the plurality of the battery modules are electrically connected in series.

[0011] The current collector comprises a plurality of the input ends, and the plurality of the input ends are arranged one by one corresponding to the plurality of the battery modules; the positive electrode of the perovskite battery string in each of the battery modules is electrically connected with the first terminal in the corresponding input end; and the negative electrode of the perovskite battery string in each of the battery modules is electrically connected with the second terminal in the corresponding input end.

[0012] In one of the embodiments, the voltage generated by the plurality of the crystalline silicon cell strings electrically connected in series is equal to the voltage generated by the perovskite battery string in each of the battery modules.

[0013] In one of the embodiments, the solar cell system comprises three of the battery modules, and the three of the battery modules are arranged along the second direction; each of the battery modules comprises five of the laminated cell assemblies, and the five of the laminated cell assemblies are arranged along the first direction.

[0014] The current collector comprises three of the input ends.

[0015] In one of the embodiments, in the laminated cell assembly, the open circuit voltage of the perovskite cell is a first value, and the first value is between 170V and 210V.

[0016] The open circuit voltage of the crystalline silicon cell is a second value, and the second value is between 50V and 60V.

[0017] In one of the embodiments, the current collector and the battery module are arranged at intervals along the second direction, the input end is located on the side of the current collector along the second direction close to the battery module, and the output end is located on the side of the current collector along the second direction away from the battery module.

[0018] In one of the embodiments, the perovskite cell comprises, from the side close to the perovskite cell away from the crystalline silicon cell, a transparent substrate, a first transparent electrode, a hole transport layer, a perovskite layer, an electron transport layer and a first metal electrode arranged in sequence.

[0019] In the plurality of stacked battery assemblies arranged along the first direction of the battery module, the first metal electrode in each of the stacked battery assemblies is electrically connected with the first transparent electrode in an adjacent stacked battery assembly; the first transparent electrode in the stacked battery assembly at the head end is electrically connected with the first terminal in the corresponding input end; and the first metal electrode in the stacked battery assembly at the tail end is electrically connected with the second terminal in the corresponding input end.

[0020] In one of the embodiments, the material of the perovskite layer includes a material with a general chemical formula of ABX3, where A is selected from at least one of FA + , MA + , Cs + , and Rb + , B is selected from at least one of Pb 2+ , Sn 2+ , and Sr 2+ , and X is selected from at least one of Cl - , Br - , and I - .

[0021] In one of the embodiments, the crystalline silicon cell includes a second metal electrode, a P-type doped silicon material layer, a first intrinsic silicon material layer, a silicon substrate, a second intrinsic silicon material layer, an N-type doped silicon material layer, and a second transparent electrode which are sequentially stacked along the second direction; and the transparent substrate is located at a side of the second transparent electrode away from the N-type doped silicon material layer along the second direction.

[0022] In the plurality of stacked battery assemblies arranged along the first direction of the battery module, the second transparent electrode in each of the stacked battery assemblies is electrically connected with the second metal electrode in an adjacent stacked battery assembly.

[0023] In one of the embodiments, the stacked battery assembly includes a transparent encapsulation layer which is arranged at a side of the first metal electrode away from the electron transport layer along the second direction, and is used for encapsulating the perovskite cell.

[0024] In the solar cell system, the plurality of perovskite cells in the battery module are electrically connected in series, and form a perovskite cell string; the plurality of crystalline silicon cells in the battery module are electrically connected in series, and form a crystalline silicon cell string. The first terminal in the input end of the current collector is electrically connected with the positive electrode of the perovskite cell string, the second terminal in the input end of the current collector is electrically connected with the negative electrode of the perovskite cell string, the voltage generated by the perovskite cell string is received by the current collector through the input end of the current collector, and then is output from the output end of the current collector to the device electrically connected with the output end of the current collector.

[0025] By connecting the positive and negative electrodes of the perovskite battery string with the input end of the current combiner, and not connecting the positive and negative electrodes of the crystalline silicon battery string with the input end of the current combiner, the positive and negative electrodes of the perovskite battery string in the solar cell system can be prevented from being incorrectly connected with the positive and negative electrodes of the crystalline silicon battery string, thereby preventing the solar cell system from generating problems such as short circuit and arc.

[0026] In summary, the solar cell system in the embodiment can reduce the risk of incorrect connection of lines in the solar cell system and improve the safety and stability of the solar cell system in operation by electrically connecting the first terminal in the input end of the current combiner with the positive electrode of the perovskite battery string and electrically connecting the second terminal in the input end of the current combiner with the negative electrode of the perovskite battery string. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments or the exemplary embodiments of the present application, the drawings needed to be used in the description of the embodiments or the exemplary embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0028] Figure 1 FIG. 1 is a structural schematic diagram of a solar cell system in an embodiment of the present application.

[0029] Figure 2 FIG. 2 is a structural schematic diagram of a current combiner in the solar cell system shown in FIG. 1. Figure 1

[0030] Figure 3 FIG. 3 is an A-direction schematic diagram of the current combiner shown in FIG. 2. Figure 2

[0031] Figure 4 FIG. 4 is a structural schematic diagram of a laminated battery assembly in the solar cell system shown in FIG. 1. Figure 1 REFERENCE SIGNS:

[0032] The solar cell system 1;

[0033]

[0034] ​​​Battery module 100, laminated battery assembly 110, perovskite battery 111, transparent substrate 111-1, first transparent electrode 111-2, hole transport layer 111-3, perovskite layer 111-4, electron transport layer 111-5, first metal electrode 111-6, crystalline silicon battery 112, second metal electrode 112-1, P-type doped silicon material layer 112-2, first intrinsic silicon material layer 112-3, silicon substrate 112-4, second intrinsic silicon material layer 112-5, N-type doped silicon material layer 112-6, second transparent electrode 112-7, transparent encapsulation layer 113;

[0035] Convergent 200, output end 210, first output end 211, second output end 212, input end 220, first terminal 221, second terminal 222. DETAILED DESCRIPTION

[0036] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated that there are many alternate embodiments that come within the scope of the present application. Accordingly, it is not intended that the present application be limited, for example, to the specific embodiments described.

[0037] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0038] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0039] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and the like, should be understood broadly. For example, it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements, or the interaction relationship between two elements, unless otherwise explicitly defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the present application, unless specifically defined otherwise, if there is a description such as "on" or "under" or the like between the first feature and the second feature, it can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0041] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes, and do not represent the only implementation.

[0042] Please refer to Figures 1 to 3 , Figure 1A structural diagram of a solar cell system 1 in an embodiment of the present application is shown. The solar cell system 1 provided by the embodiment of the present application comprises a current combiner 200 and at least one cell module 100. The cell module 100 comprises a plurality of stacked cell assemblies 110 arranged along a first direction, the stacked cell assembly 110 comprising a perovskite cell 111 and a crystalline silicon cell 112, the perovskite cell 111 and the crystalline silicon cell 112 being arranged in a stacked manner along a second direction, the first direction and the second direction being arranged in an intersecting manner; the plurality of perovskite cells 111 in the cell module 100 are electrically connected in series in sequence and form a perovskite cell string; the plurality of crystalline silicon cells 112 in the cell module 100 are electrically connected in series in sequence and form a crystalline silicon cell string; the current combiner 200 comprises at least one output end 210 and at least one input end 220, the input end 220 corresponds to the perovskite cell string, the input end 220 comprises a first terminal 221 and a second terminal 222, the first terminal 221 is electrically connected to the positive electrode of the corresponding perovskite cell string, and the second terminal 222 is electrically connected to the negative electrode of the corresponding perovskite cell string.

[0043] In the solar cell system 1 in the embodiment, the plurality of perovskite cells 111 in the cell module 100 are electrically connected in series in sequence and form a perovskite cell string; the plurality of crystalline silicon cells 112 in the cell module 100 are electrically connected in series in sequence and form a crystalline silicon cell string. The first terminal 221 in the input end of the current combiner 200 is electrically connected to the positive electrode of the perovskite cell string, and the second terminal 222 in the input end 220 of the current combiner 200 is electrically connected to the negative electrode of the perovskite cell string. The voltage generated by the perovskite cell string is received by the current combiner 200 through the input end 220 of the current combiner 200 and then output from the output end 210 of the current combiner 200 to the equipment electrically connected to the output end 210 of the current combiner 200.

[0044] By connecting the positive and negative electrodes of the perovskite cell string to the input end 220 of the current combiner 200 and not connecting the positive and negative electrodes of the crystalline silicon cell string to the input end 220 of the current combiner 200, it can be avoided that the positive and negative electrodes of the perovskite cell string in the solar cell system 1 are misconnected with the positive and negative electrodes of the crystalline silicon cell string, thereby preventing the solar cell system 1 from generating problems such as short circuit and arc.

[0045] As described above, in the solar cell system 1 in the embodiment, by connecting the first terminal 221 in the input end 220 of the current combiner 200 to the positive electrode of the perovskite cell string and connecting the second terminal 222 in the input end 220 of the current combiner 200 to the negative electrode of the perovskite cell string, it can be avoided that the lines in the solar cell system 1 are misconnected, thereby improving the safety and stability of the solar cell system 1 in operation.

[0046] Please refer to Figure 1In some embodiments, the solar cell system 1 comprises a plurality of cell modules 100; the plurality of cell modules 100 are arranged along the second direction, and the plurality of cell modules 100 are electrically connected in series; the combiner 200 comprises a plurality of input terminals 220, and the plurality of input terminals 220 are arranged one-to-one with the plurality of cell modules 100; the positive electrode of the perovskite cell string in each cell module 100 is electrically connected with the first terminal 221 in the corresponding input terminal 220; and the negative electrode of the perovskite cell string in each cell module 100 is electrically connected with the second terminal 222 in the corresponding input terminal 220.

[0047] In the embodiment, by arranging the combiner 200 to comprise a plurality of input terminals 220, and the plurality of input terminals 220 are arranged one-to-one with the plurality of cell modules 100, it is convenient to connect the perovskite cell string in each cell module 100 to the combiner 200 through the corresponding input terminal 220, so as to electrically connect the different perovskite cell strings in parallel to the combiner 200, and finally output the voltage generated by the plurality of perovskite cell strings from the output terminal 210 of the combiner 200. In the above entire process, since the voltage generated by the plurality of perovskite cell strings is output through the output terminal 210 of the combiner 200, the number of output terminals for electrically connecting with external devices in the solar cell system 1 can be reduced, the circuit in the solar cell system 1 is simplified, the risk of misconnection of the circuit in the solar cell system 1 is reduced, and the safety and stability of the solar cell system 1 are enhanced.

[0048] It should be noted that by electrically connecting the plurality of cell modules 100 in series, the number of the electrically connected silicon cells 112 can be increased, so as to ensure that the voltage generated by the plurality of cell modules 100 after being electrically connected in series is equal to the voltage generated by the perovskite cell string in each cell module 100.

[0049] In other embodiments, the solar cell system 1 comprises a plurality of cell modules 100; the plurality of cell modules 100 are arranged along the second direction, and the plurality of cell modules 100 are electrically connected in series; the positive electrode of the perovskite cell string in each cell module 100 is electrically connected with the first terminal 221 in the input terminal 220; and the negative electrode of the perovskite cell string in each cell module 100 is electrically connected with the second terminal 222 in the input terminal 220.

[0050] In some embodiments, the combiner 200 comprises but is not limited to a direct current combiner.

[0051] In some embodiments, the plurality of input terminals 220 are arranged along the first direction.

[0052] Please refer to Figure 1In some embodiments, the voltage generated by the plurality of crystalline silicon cell strings in electrical series is equal to the voltage generated by the perovskite cell string in each battery module 100.

[0053] In this embodiment, by setting the voltage generated by the plurality of crystalline silicon cell strings in electrical series to be equal to the voltage generated by the perovskite cell string in each battery module 100, the plurality of crystalline silicon cell strings in electrical series and the perovskite cell string in each battery module 100 can be connected to the same power system.

[0054] It should be noted that the difference between the voltage generated by the plurality of crystalline silicon cell strings in electrical series and the voltage generated by the perovskite cell string in each battery module 100 is between 300V and 50V.

[0055] Please refer to Figure 1 In some embodiments, the solar cell system 1 includes three battery modules 100 arranged along a second direction; each battery module 100 includes five stacked cell assemblies 110 arranged along a first direction; and the current combiner 200 includes three input ends 220.

[0056] In this embodiment, the five perovskite cells 111 in each battery module 100 are in electrical series to form a perovskite cell string; the five crystalline silicon cells 112 in each battery module 100 are in electrical series to form a crystalline silicon cell string, and the three crystalline silicon cell strings corresponding to the three battery modules 100 are in electrical series in turn.

[0057] It should be noted that those skilled in the art can set the number of battery modules 100 included in the solar cell system 1 and the number of stacked cell assemblies 110 included in each battery module 100 according to their needs.

[0058] Please refer to Figure 1 In some embodiments, in the stacked cell assembly 110, the open circuit voltage of the perovskite cell 111 is a first value M1, and the first value M1 is between 170V and 210V; the open circuit voltage of the crystalline silicon cell 112 is a second value M2, and the second value M2 is between 50V and 60V.

[0059] In this embodiment, by setting the open circuit voltage of the perovskite cell 111 to be between 170V and 210V, the voltage generated by the five perovskite cells 111 in electrical series in each battery module 100 is between 850V and 1050V; by setting the open circuit voltage of the crystalline silicon cell 112 to be between 50V and 60V, the voltage generated by the crystalline silicon cell strings in the three battery modules 100 in electrical series is between 750V and 900V.

[0060] Referring to Figure 2 With Figure 3 In some embodiments, the busbar 200 and the battery module 100 are arranged in the second direction with the input end 220 located at the side of the busbar 200 close to the battery module 100 in the second direction, and the output end 210 located at the side of the busbar 200 away from the battery module 100 in the second direction.

[0061] In the embodiment, the voltage generated by the perovskite cell string in each battery module 100 is input into the busbar 200 through the input end 220, and then output from the output end 210 of the busbar 200 for driving the external device connected to the output end 210.

[0062] In some embodiments, the output end 210 includes a first output end 211 and a second output end 212 arranged in the first direction, the first output end 211 being electrically connected to the negative electrode of the external device, and the second output end 212 being electrically connected to the positive electrode of the external device.

[0063] In some embodiments, the input end 220 includes a first terminal 221 and a second terminal 222 arranged in the third direction.

[0064] Referring to Figure 4 In some embodiments, the perovskite cell 111 includes, from the side close to the perovskite cell 111 away from the crystalline silicon cell 112, a transparent substrate 111-1, a first transparent electrode 111-2, a hole transport layer 111-3, a perovskite layer 111-4, an electron transport layer 111-5, and a first metal electrode 111-6 arranged in sequence. In the plurality of stacked cell assemblies 110 arranged in the first direction of the battery module 100, the first metal electrode 111-6 in each stacked cell assembly 110 is electrically connected to the first transparent electrode 111-2 in the adjacent stacked cell assembly 110; the first transparent electrode 111-2 in the first-end stacked cell assembly 110 is electrically connected to the first terminal 221 in the corresponding input end; and the first metal electrode 111-6 in the tail-end stacked cell assembly 110 is electrically connected to the second terminal 222 in the corresponding input end 220.

[0065] In the embodiment, by arranging the first metal electrode 111-6 in each stacked cell assembly 110 to be electrically connected to the first transparent electrode 111-2 in the adjacent stacked cell assembly 110 in the plurality of stacked cell assemblies 110 arranged in the first direction of the battery module 100, the plurality of perovskite cells 111 in each battery module 100 can be electrically connected in sequence to form a perovskite cell string.

[0066] By setting the first transparent electrode 111-2 in the laminated battery assembly 110 at the head end in the battery module 100 to be electrically connected with the first terminal 221 in the corresponding input end, and the first metal electrode 111-6 in the laminated battery assembly 110 at the tail end to be electrically connected with the second terminal 222 in the corresponding input end 220, the perovskite battery in the battery module 100 can be connected in series into the busbar 200, and then the voltage generated by the perovskite battery string can be transmitted into the busbar 200.

[0067] Referring to Figure 4 In some embodiments, the material of the perovskite layer 111-4 includes a material with a general chemical formula of ABX3, where A is selected from at least one of FA + , MA + , Cs + , and Rb + , B is selected from at least one of Pb 2+ , Sn 2+ , and Sr 2+ , and X is selected from at least one of Cl - , Br - , and I - .

[0068] Referring to Figure 4 In some embodiments, the crystalline silicon battery 112 includes, in sequence along the second direction, a second metal electrode 112-1, a P-type doped silicon material layer 112-2, a first intrinsic silicon material layer 112-3, a silicon substrate 112-4, a second intrinsic silicon material layer 112-5, an N-type doped silicon material layer 112-6, and a second transparent electrode 112-7, and the transparent substrate 111-1 is located on the side of the second transparent electrode 112-7 away from the N-type doped silicon material layer 112-6 along the second direction. In the plurality of laminated battery assemblies 110 arranged along the first direction of the battery module 100, the second transparent electrode 112-7 in each laminated battery assembly 110 is electrically connected with the second metal electrode 112-1 in the adjacent laminated battery assembly 110.

[0069] In this embodiment, by setting the second transparent electrode 112-7 in each laminated battery assembly 110 to be electrically connected with the second metal electrode 112-1 in the adjacent laminated battery assembly 110 in the plurality of laminated battery assemblies 110 arranged along the first direction of the battery module 100, the plurality of crystalline silicon batteries 112 in the battery module 100 can be electrically connected in series in sequence to form a crystalline silicon battery string.

[0070] In some embodiments, in any stacked battery assembly 110, the second transparent electrode 112-7 in the tail end of the stacked battery assembly 110 in each battery module 100 is electrically connected to the second metal electrode 112-1 in the head end of the stacked battery assembly 110 in the adjacent battery module 100, in the direction of the perovskite cell 111 pointing to the crystalline silicon cell 112 in the stacked battery assembly 110. Through this arrangement, the crystalline silicon cells corresponding to the plurality of battery modules 100 can be electrically connected in series.

[0071] Please refer to Figure 4 In some embodiments, the stacked battery assembly 110 includes a transparent encapsulation layer 113 disposed on the side of the first metal electrode 111-6 away from the electron transport layer 111-5, and the transparent encapsulation layer 113 is used to encapsulate the perovskite cell 111.

[0072] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0073] The above embodiments only express several implementation manners of the present application, and the description is specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A solar cell system, characterized by, The solar cell system comprises: at least one battery module, the battery module comprising a plurality of stacked battery assemblies arranged along a first direction, the stacked battery assemblies comprising perovskite cells and crystalline silicon cells, the perovskite cells and the crystalline silicon cells being arranged in a stack along a second direction, the first direction intersecting the second direction; a plurality of the perovskite cells in the battery module are electrically connected in series, and form a perovskite cell string; a plurality of the crystalline silicon cells in the battery module are electrically connected in series, and form a crystalline silicon cell string; a current combiner comprising at least one output terminal and at least one input terminal, the input terminal corresponding to the perovskite cell string, the input terminal comprising a first terminal and a second terminal, the first terminal being electrically connected to the positive electrode of the corresponding perovskite cell string, and the second terminal being electrically connected to the negative electrode of the corresponding perovskite cell string.

2. The solar cell system of claim 1, wherein The solar cell system comprises a plurality of the battery modules; the plurality of the battery modules are arranged along the second direction, and the crystalline silicon cell strings in the plurality of the battery modules are electrically connected in series; the current combiner comprises a plurality of the input terminals, the plurality of the input terminals corresponding to the plurality of the battery modules, the positive electrode of the perovskite cell string in each of the battery modules being electrically connected to the first terminal in the corresponding input terminal, and the negative electrode of the perovskite cell string in each of the battery modules being electrically connected to the second terminal in the corresponding input terminal.

3. The solar cell system of claim 2, wherein, The voltage generated by the plurality of the crystalline silicon cell strings electrically connected in series is equal to the voltage generated by the perovskite cell string in each of the battery modules.

4. The solar cell system of claim 2, wherein, The solar cell system comprises three of the battery modules, the three of the battery modules being arranged along the second direction; each of the battery modules comprises five of the stacked battery assemblies, the five of the stacked battery assemblies being arranged along the first direction; the current combiner comprises three of the input terminals.

5. The solar cell system of claim 4, wherein, In the stacked battery assembly, the open-circuit voltage of the perovskite cell is a first value, the first value being between 170V and 210V; the open-circuit voltage of the crystalline silicon cell is a second value, the second value being between 50V and 60V.

6. The solar cell system of claim 1, wherein, The current combiner and the battery module are arranged along the second direction, the input terminal being located on the side of the current combiner close to the battery module along the second direction, and the output terminal being located on the side of the current combiner away from the battery module along the second direction.

7. The solar cell system of claim 1, wherein, The perovskite cell comprises, from the side close to the perovskite cell and away from the crystalline silicon cell, a transparent substrate, a first transparent electrode, a hole transport layer, a perovskite layer, an electron transport layer, and a first metal electrode arranged in a stack; in the plurality of the stacked battery assemblies of the battery module arranged along the first direction, the first metal electrode in each of the stacked battery assemblies is electrically connected to the first transparent electrode in the adjacent stacked battery assembly, and the first transparent electrode in the stacked battery assembly at the head end is electrically connected to the first terminal in the corresponding input terminal; The first metal electrode in the tail-end stacked battery assembly is electrically connected with the second terminal in the corresponding input end.

8. The solar cell system of claim 7, wherein, The material of the perovskite layer comprises a material having a general chemical formula of ABX3, wherein A is selected from at least one of FA + , MA + , Cs + , and Rb + , B is selected from at least one of Pb 2+ , Sn 2+ , and Sr 2+ , and X is selected from at least one of Cl - , Br - , and I - .

9. The solar cell system of claim 7, wherein, The crystalline silicon cell comprises a second metal electrode, a P-type doped silicon material layer, a first intrinsic silicon material layer, a silicon substrate, a second intrinsic silicon material layer, an N-type doped silicon material layer and a second transparent electrode which are sequentially stacked along the second direction; The transparent substrate is located on the side of the second transparent electrode away from the N-type doped silicon material layer along the second direction; The second transparent electrode in each of the stacked battery assemblies arranged along the first direction of the battery module is electrically connected with the second metal electrode in the adjacent stacked battery assembly.

10. The solar cell system of claim 9, wherein, The stacked battery assembly comprises a transparent packaging layer arranged on the side of the first metal electrode away from the electron transport layer along the second direction, and the transparent packaging layer is used for packaging the perovskite cell.

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