A perovskite-crystalline silicon composite photovoltaic module

Abstract

The present invention proposes a perovskite-crystalline silicon composite photovoltaic module, comprising a perovskite thin-film module disposed on the outer glass substrate of the photovoltaic module and a crystalline silicon module disposed behind the perovskite thin-film module; a first set of junction boxes corresponding to the perovskite module and a second set of junction boxes corresponding to the crystalline silicon module, the second set of junction boxes including left, center, and right junction boxes and a voltage conversion junction box plugged into one of the junction boxes, the voltage conversion junction box being provided with a voltage conversion module. The perovskite-crystalline silicon composite photovoltaic module of the present invention can convert the electrical energy generated by the crystalline silicon photovoltaic module to a current value close to that of the perovskite thin-film photovoltaic module through voltage conversion, and then combine the electrical energy through a connector to enable rapid connection between the modules. This can save the use of cables and connectors, reducing costs; it can also facilitate replacement according to different module specifications, making assembly and maintenance more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of solar photovoltaic power generation, and in particular to a perovskite-crystalline silicon composite photovoltaic module. Background Art

[0002] Photovoltaic power generation systems are power generation systems that directly convert solar energy into electrical energy. They can balance economic development and ecological protection while generating clean electricity. They are currently widely used in a variety of scenarios. They are one of the important clean energy sources to replace traditional fossil energy and have broad development prospects.

[0003] Photovoltaic power generation systems connect photovoltaic modules via cables to form an array. The electricity generated by the modules is then fed directly to loads or fed into the power grid through branch lines, busbars, and DC / AC conversion. Crystalline silicon solar cells and modules are the most mature and cost-effective technology, and their photoelectric conversion efficiency is increasing with continuous technological and process improvements. Therefore, crystalline silicon modules remain the predominant module type in current photovoltaic power generation systems. Furthermore, as the cost per kilowatt-hour of crystalline silicon modules narrows compared to that of thermal power generation, it is foreseeable that they will continue to hold the majority of the market share, both now and for a considerable period of time.

[0004] In recent years, another type of photovoltaic module, perovskite photovoltaic modules, has garnered increasing attention. These materials are primarily formed by forming a thin film of liquid material onto a glass substrate through printing, squeegeeing, and drying techniques. This material exhibits a long electron-hole diffusion length and a light absorption coefficient far superior to that of crystalline silicon. The direct band gap reaches 1.50–1.55 eV, absorbing photons with wavelengths less than 800 nm. The absorption coefficient of the film material in the visible light range reaches 10⁴–10⁵ cm⁻¹. Furthermore, the film boasts advantages such as low cost, high carrier mobility, long diffusion length, and few crystal defects, resulting in a conversion efficiency significantly exceeding that of crystalline silicon. In addition to this efficiency advantage, the manufacturing process is simpler than that of crystalline silicon, requiring fewer materials. Therefore, the cost of generating electricity from perovskite photovoltaic modules is even lower than that of thermal power generation.

[0005] Furthermore, because perovskite thin films are transparent, they can be printed on the outer glass substrate of crystalline silicon modules without significantly affecting the crystalline silicon's ability to absorb sunlight. Therefore, perovskite thin-film modules can be fabricated on the outer glass substrate of traditional crystalline silicon modules and packaged together with crystalline silicon photovoltaic modules to create perovskite-crystalline silicon composite photovoltaic modules. Compared to crystalline silicon modules, perovskite modules have a higher open-circuit voltage, reaching around 200V, while having a very low short-circuit current, generally around 2A. Crystalline silicon modules generally have an open-circuit voltage of around 60V, but a relatively high short-circuit current, reaching around 15-20A.

[0006] In photovoltaic systems, junction boxes are required to lead out the electricity generated by photovoltaic modules and connect it to external loads. Therefore, photovoltaic module junction boxes are key components for photovoltaic modules to build various power generation systems. As for perovskite-crystalline silicon composite modules, when working, the perovskite thin-film modules and crystalline silicon cell modules work independently, and the electrical parameters (open-circuit voltage, short-circuit current) of the two are very different. Therefore, for a junction box system that outputs the power of such modules, generally only two sets of junction boxes can be used to output the electricity generated by the perovskite thin-film modules and the crystalline silicon modules respectively, and then one of the voltages is converted by transformer and the other voltage is combined with the busbar of the photovoltaic power generation system. This will This leads to two problems. First, more cables are needed when assembling the photovoltaic system, which not only increases the system materials and installation costs, but also causes system line disorder and inconvenience in maintenance. Second, a large-scale transformer needs to be installed on each bus branch, which requires many components for installing the transformer in the photovoltaic power generation system, making the photovoltaic power generation system more complicated. Or, the transformer needs to be integrated into the bus branch cable of each component, which requires special cables to achieve this and the manufacturing process is complicated. These are not conducive to the widespread application of perovskite-crystalline silicon composite components in photovoltaic power generation systems. Summary of the Invention

[0007] The purpose of the present invention is to propose a perovskite-crystalline silicon composite photovoltaic module that is easy to install and maintain the photovoltaic power generation system and can reduce the system construction cost in response to the application requirements of the perovskite-crystalline silicon composite photovoltaic module in the photovoltaic power generation system.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A perovskite-crystalline silicon composite photovoltaic module, comprising a perovskite thin-film photovoltaic module disposed on an outer glass substrate of the photovoltaic module and a crystalline silicon photovoltaic module disposed behind the perovskite thin-film photovoltaic module; a first set of junction boxes and a second set of junction boxes disposed on the back of the module, the first set of junction boxes corresponding to the perovskite thin-film photovoltaic module comprising a first junction box and a second junction box, a first connector connected to the first junction box, and a second connector connected to the second junction box; the second set of junction boxes corresponding to the crystalline silicon cell module comprising a left junction box, a middle junction box, a right junction box, and a voltage conversion junction box plugged into one of the junction boxes;

[0010] The first junction box and the second junction box are provided with connection terminals for connecting to the busbars and connector cables of the perovskite thin-film photovoltaic modules;

[0011] The left junction box, the middle junction box, and the right junction box are each provided with a first conductive terminal, a second conductive terminal, and a bypass protection device provided between the first conductive terminal and the second conductive terminal; the conductive terminals in the left junction box, the middle junction box, and the right junction box form a series structure in the circuit through the photovoltaic module busbar;

[0012] The left, middle, and right junction boxes that are plugged into the voltage conversion junction box are provided with a circuit adapter board, which is provided with a first terminal and a second terminal. A terminal in one of the other two junction boxes is connected and fixed to the first terminal via a cable, and a terminal in the other junction box is connected and fixed to the second terminal via a cable. The junction box that is plugged into the voltage conversion junction box is provided with a connector plug and a connector socket that are electrically connected to the first terminal and the second terminal, respectively, on a side opposite to the voltage conversion junction box. The connector plug and the connector socket are also provided on the circuit adapter board.

[0013] The voltage conversion junction box is provided with a circuit board, on which are provided a third terminal, a fourth terminal, a voltage conversion module, and a connector socket and a connector plug respectively plugged into the connector plug and the connector socket on the junction box that are plugged into the voltage conversion junction box. The third connector is connected to the third terminal via a cable, and the fourth connector is connected to the fourth terminal via a cable. The electric energy drawn from the crystalline silicon photovoltaic module is transformed and converted by the voltage conversion module and then transmitted outward through the third terminal and the fourth terminal.

[0014] Preferably, the junction box in the second group of junction boxes that is plugged into the voltage conversion junction box is a middle junction box. At this time, a terminal in the left junction box is connected and fixed to the first terminal post through a cable, and a terminal in the right junction box is connected and fixed to the second terminal post through a cable; a connector plug and a connector socket that are electrically connected to the first terminal post and the second terminal post respectively are provided on the side of the middle junction box relative to the voltage conversion junction box.

[0015] More preferably, the first junction box and the second junction box in the first group of junction boxes are both provided with a first junction terminal and a second junction terminal, and a bypass protection device is provided between the first junction terminal and the second junction terminal.

[0016] More preferably, a side of the box body of the middle junction box, facing the side of the voltage conversion junction box, is provided with a protrusion that is plugged into the box body of the voltage conversion junction box, and correspondingly, a groove that cooperates and is fixed with the protrusion is formed on the side of the box body of the voltage conversion junction box.

[0017] More preferably, the middle junction box and the voltage conversion junction box have an integral box cover. When the middle junction box and the voltage conversion junction box are plugged and assembled, the integral box cover is placed on the middle junction box and the voltage conversion junction box, and a sealing ring is provided between the integral box cover and the middle junction box and the voltage conversion junction box.

[0018] More preferably, the middle junction box and the voltage conversion junction box are each provided with an independent box cover, and the box cover of the voltage conversion junction box located above has a protruding plate extending to a part of the middle junction box below, and the protruding plate is tightly fitted with the top of the middle junction box to cover the docking part of the middle junction box and the voltage conversion junction box.

[0019] More preferably, the first connector and the third connector are plug-connected to the T-shaped connector plug, and the second connector and the fourth connector are plug-connected to the T-shaped connector socket; the T-shaped connector plug and the T-shaped connector socket are both "one to two" structures; when the photovoltaic power generation system is assembled, the T-shaped connector plugs and T-shaped connector sockets on adjacent components are plug-connected to each other.

[0020] More preferably, the current magnitude of the electric energy generated by the crystalline silicon photovoltaic module after conversion by the voltage conversion junction box is within 10% of the current magnitude generated by the perovskite thin film photovoltaic module.

[0021] The beneficial effects of the present invention are that the perovskite-crystalline silicon composite photovoltaic module is structurally and circuitly connected to the voltage conversion junction box in a board-to-board plug-in manner on the crystalline silicon photovoltaic module junction box, and the electric energy generated by the crystalline silicon photovoltaic module is converted into a current value close to that of the perovskite thin-film photovoltaic module after voltage conversion, and then collected together through a connector to achieve rapid connection between components. On the one hand, it can save the use of cables and connectors between the box bodies and reduce costs; in addition, the voltage conversion junction box using the plug-in method can also be easily replaced according to different component specifications, and assembly and maintenance are more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 Shown is a schematic structural diagram of a perovskite-crystalline silicon composite photovoltaic module of the present invention (back side of the module);

[0024] Figure 2 Shown Figure 1Schematic diagram of the structure of the first set of junction boxes of the perovskite-crystalline silicon composite photovoltaic module;

[0025] Figure 3 Shown Figure 1 Schematic diagram of the structure of the second set of junction boxes of the perovskite-crystalline silicon composite photovoltaic module;

[0026] Figure 4 Shown is a schematic diagram of the internal structure of the middle junction box in the second group of junction boxes;

[0027] Figure 5 Shown is a schematic diagram of the internal structure of the voltage conversion junction box in the second group of junction boxes;

[0028] Figure 6 FIG2 is a schematic structural diagram of adjacent perovskite-crystalline silicon composite photovoltaic modules connected in accordance with an embodiment of the present invention;

[0029] Figure 7 FIG2 is a schematic diagram showing the circuit connection structure of the perovskite-crystalline silicon composite photovoltaic module of the present invention;

[0030] Figure 8 FIG2 is a schematic structural diagram of an assembled junction box and a voltage conversion junction box according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0033] Reference Figure 1-Figure 3As shown, a perovskite-crystalline silicon composite photovoltaic module 100 according to an embodiment of the present invention includes a perovskite thin-film photovoltaic module arranged on an outer glass substrate of the photovoltaic module and a crystalline silicon photovoltaic module arranged behind the perovskite thin-film photovoltaic module; a first group of junction boxes 10 and a second group of junction boxes 20 are arranged on the back of the module 100, the first group of junction boxes corresponding to the perovskite thin-film photovoltaic module, including a first junction box 11 and a second junction box 12, a first connector 13 connected to the first junction box 11 and a second connector 14 connected to the second junction box 12; the second group of junction boxes 20 corresponding to the crystalline silicon cell module, including a left junction box 21, a middle junction box 22 and a right junction box 23. 2. Right junction box 23, voltage conversion junction box 24 plugged into middle junction box 22; the first junction box 11 and the second junction box 12 are provided with terminals for connecting to the busbars and connector cables of the perovskite thin-film photovoltaic modules; the left junction box 21, the middle junction box 22, and the right junction box 23 are all provided with first conductive terminals 201, second conductive terminals 202, and bypass protection devices (such as bypass diodes) 203 provided between the first conductive terminals 201 and the second conductive terminals 202; the conductive terminals in the left junction box 21, the middle junction box 22, and the right junction box 23 form a series structure in the circuit through the photovoltaic module busbar; see Figure 4 The middle junction box 22 is provided with a circuit adapter board 221, and a first terminal 225 and a second terminal 226 are provided on the circuit adapter board 224. A terminal in the left junction box 21 is connected and fixed to the first terminal 225 through a cable, and a terminal in the right junction box 23 is connected and fixed to the second terminal 225 through a cable; a connector plug 222 and a connector socket 223 are provided on one side of the middle junction box 22 relative to the voltage conversion junction box 24, which are electrically connected to the first terminal 225 and the second terminal 226 respectively. The connector plug 222 and the connector socket 223 are also provided on the circuit adapter board. 221; the voltage conversion junction box 24 is provided with a circuit board 241, on which are provided a third terminal 245, a fourth terminal 246, a voltage conversion module 244, and a connector socket 242 and a connector plug 243 respectively plugged into the connector plug 222 and the connector socket 223 on the intermediate box, the third connector 25 is connected to the third terminal 245 through a cable, and the fourth connector 26 is connected to the fourth terminal 246 through a cable; the power drawn from the intermediate junction box 22 is transformed and converted by the voltage conversion module 244 and then transmitted to the outside through the third terminal 245 and the fourth terminal 246.

[0034] In the present invention, since the short-circuit current of perovskite thin-film photovoltaic modules is relatively low, generally only around 2A, even if layout shading occurs and a "hot spot" effect occurs, it will not generate localized high heat and cause module burnout, unlike crystalline silicon photovoltaic modules. Therefore, the first junction box 11 and the second junction box 12 in the first group of junction boxes can be provided with only positive and negative terminals, without the need for bypass protection devices. It should be understood that if the conversion efficiency of perovskite thin-film photovoltaic modules increases, the short-circuit current increases; or for strict safety protection considerations, a bypass protection device can also be provided between the positive and negative terminals.

[0035] In addition, refer to Figure 4 and Figure 5 In order to facilitate the plug-in installation between the middle junction box 22 and the voltage conversion junction box 24 and ensure the connection effect, a protrusion 227 that plugs into the box body of the voltage conversion junction box 24 is provided on the side of the box body 220 of the middle junction box 22, facing the side of the voltage conversion junction box 24. Correspondingly, a groove 247 that cooperates with the protrusion 227 is formed on the side of the box body 240 of the voltage conversion junction box 24. In a preferred embodiment, the middle junction box 22 and the voltage conversion junction box 24 have an integral box cover (not shown). After the middle junction box 22 and the voltage conversion junction box 24 are plugged in and assembled, the integral box cover is placed on the middle junction box 22 and the voltage conversion junction box 24. A sealing ring is provided between the integral box cover and the middle junction box 22 and the voltage conversion junction box 24. This can prevent external moisture from entering the interior and causing adverse effects on the connector plug-in part between the two box bodies. Or as Figure 8 As shown, the middle junction box 22 and the voltage conversion junction box 24 are each provided with an independent box cover. The box cover of the voltage conversion junction box 24 located above has a protruding plate extending to a part of the middle junction box 22 below. The protruding plate is tightly fitted with the top of the middle junction box 22, covering the docking part of the middle junction box 22 and the voltage conversion junction box 24, and also preventing external moisture from entering the interior and causing adverse effects on the connector plug-in part between the two box bodies.

[0036] In the above embodiment, the voltage conversion junction box is plugged into the middle junction box. It should be understood that the voltage conversion junction box can also be plugged into the left junction box or the right junction box. In this case, it is only necessary to set the left junction box or the right junction box according to the structure of the above-mentioned middle junction box. This should be regarded as an equivalent technical solution.

[0037] Combine Figure 6 and Figure 7, as shown in the circuit connection structure diagram of the perovskite-crystalline silicon composite photovoltaic module of the present invention, for the first group of junction boxes 10 for extracting power from the perovskite thin-film photovoltaic module, the first terminal 101 and the second terminal 102 in the first junction box 11 and the second junction box 12 are connected to the module busbar to form a series connection, the first terminal 101 in the first junction box 11 is connected to the first connector 13 through a cable, and the second terminal 102 in the second junction box 12 is connected to the second connector 14 through a cable; for the crystalline silicon photovoltaic module power The first conductive terminal 201 and the second conductive terminal 202 in the left junction box 21, the middle junction box 22 and the right junction box 23 are connected in series with the battery string and the busbar in the assembly. The first conductive terminal 201 in the left junction box is electrically connected to the first terminal 225 on the circuit adapter board 221 through a cable, and the second conductive terminal 202 in the right junction box is electrically connected to the second terminal 226 on the circuit adapter board 221 through a cable. The first terminal 225 and the second terminal 226 are respectively connected to the terminals on the circuit adapter board 221. The connector plug 222 is electrically connected to the connector socket 223; the connector socket 242 and the connector plug 243 on the circuit board 241 provided in the voltage conversion junction box 24 are plugged into the connector plug 222 and the connector socket 223 respectively to form an electrical connection, and the power drawn from the junction box 22 is transformed and converted by the voltage conversion module 244 and then transmitted to the outside through the third terminal 245 and the fourth terminal 246. The third connector 25 is connected to the third terminal 245 through a cable, and the fourth connector 26 is connected to the fourth terminal 246 through a cable; the first connection The connector 13 and the third connector 25 are plugged into the T-connector plug 32, and the second connector 14 and the fourth connector 26 are plugged into the T-connector socket 31; the T-connector plug 32 and the T-connector socket 31 are both of a "one-to-two" structure, that is, they have two input ends and one output end; when the photovoltaic power generation system is assembled, the T-connector plugs 32 and the T-connector sockets 31 on adjacent components are plugged into each other, so that a perovskite-crystalline silicon composite photovoltaic component power generation array can be formed, and finally they are converged together to the busbar of the power generation system.

[0038] The perovskite-crystalline silicon composite photovoltaic module of the present invention is provided with two sets of junction boxes corresponding to the respective characteristics of the perovskite thin-film photovoltaic module and the crystalline silicon photovoltaic module; for the low-voltage and high-current crystalline silicon photovoltaic module, a voltage conversion junction box is provided, and the electric energy generated by the crystalline silicon photovoltaic module is converted to a current value close to that of the perovskite thin-film photovoltaic module after voltage conversion, and then collected together through a connector and can realize rapid connection between components, which is not only convenient for assembly and maintenance, but also saves a lot of cables, saves costs and simplifies the power generation system. In a preferred embodiment, the current size of the electric energy generated by the crystalline silicon photovoltaic module after conversion by the voltage conversion junction box is less than 10% of the current size generated by the perovskite thin-film photovoltaic module. In addition, the present invention converts the electric energy of the crystalline silicon photovoltaic module with low voltage and high current into high voltage and low current. The smaller current will cause less power loss during power transmission, and the heat generation of the device will also be reduced.

[0039] The voltage conversion junction box of the present invention adopts a board-to-board plug-in structure to achieve structural and circuit connection with the middle junction box. On the one hand, it can save the use of cables and connectors between the box bodies and reduce costs; in addition, the voltage conversion junction box using a plug-in method can also be easily replaced according to different component specifications. Due to different composite components, the power generation efficiency of perovskite thin-film photovoltaic components and crystalline silicon photovoltaic components will be different, and voltage conversion modules of different specifications need to be used. At this time, different specifications of voltage conversion junction boxes can be directly used without changing other parts of the component.

[0040] The present invention has been described with reference to the above embodiments. However, the above embodiments are merely exemplary embodiments of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and improvements that do not depart from the spirit and scope of the present invention are intended to be protected by the present invention.

Claims

1. A perovskite-crystalline silicon composite photovoltaic module, characterized in that: The composite photovoltaic module includes a perovskite thin-film photovoltaic module disposed on the outer glass substrate of the photovoltaic module and a crystalline silicon photovoltaic module disposed behind the perovskite thin-film photovoltaic module; a first set of junction boxes and a second set of junction boxes are disposed on the back of the module, the first set of junction boxes corresponding to the perovskite thin-film photovoltaic module, including a first junction box and a second junction box, a first connector connected to the first junction box, and a second connector connected to the second junction box; the second set of junction boxes corresponding to the crystalline silicon cell module, including a left junction box, a middle junction box, a right junction box, and a voltage conversion junction box, wherein the middle junction box is plugged into the voltage conversion junction box; The first junction box and the second junction box are provided with connection terminals for connecting to the busbars and connector cables of the perovskite thin-film photovoltaic modules; The left junction box, the middle junction box, and the right junction box are each provided with a first conductive terminal, a second conductive terminal, and a bypass protection device provided between the first conductive terminal and the second conductive terminal; the conductive terminals in the left junction box, the middle junction box, and the right junction box form a series structure in the circuit through the photovoltaic module busbar; The middle junction box is provided with a circuit adapter board, on which a first terminal and a second terminal are provided, a terminal in the left junction box is connected and fixed to the first terminal via a cable, and a terminal in the right junction box is connected and fixed to the second terminal via a cable; a connector plug and a connector socket electrically connected to the first terminal and the second terminal, respectively, are provided on a side of the middle junction box opposite to the voltage conversion junction box, and the connector plug and the connector socket are also provided on the circuit adapter board; and a side of the box body of the middle junction box, facing a side of the voltage conversion junction box, is provided with a protrusion that is plugged into the box body of the voltage conversion junction box, and correspondingly, a groove that is matched and fixed with the protrusion is formed on the side of the box body of the voltage conversion junction box; The voltage conversion junction box is provided with a circuit board, on which are provided a third terminal, a fourth terminal, a voltage conversion module, and a connector socket and a connector plug respectively plugged into the connector plug and the connector socket on the junction box that are plugged into the voltage conversion junction box. The third connector is connected to the third terminal via a cable, and the fourth connector is connected to the fourth terminal via a cable. The electric energy drawn from the crystalline silicon photovoltaic module is transformed and converted by the voltage conversion module and then transmitted outward through the third terminal and the fourth terminal.

2. A perovskite-crystalline silicon composite photovoltaic module according to claim 1, characterized in that: The first junction box and the second junction box in the first group of junction boxes are both provided with a first junction terminal and a second junction terminal, and a bypass protection device is provided between the first junction terminal and the second junction terminal.

3. A perovskite-crystalline silicon composite photovoltaic module according to claim 2, characterized in that: The middle junction box and the voltage conversion junction box have an integral box cover. When the middle junction box and the voltage conversion junction box are plugged and assembled, the integral box cover is placed on the middle junction box and the voltage conversion junction box. A sealing ring is provided between the integral box cover and the middle junction box and the voltage conversion junction box.

4. A perovskite-crystalline silicon composite photovoltaic module according to claim 2, characterized in that: The middle junction box and the voltage conversion junction box are each provided with an independent box cover. The box cover of the voltage conversion junction box located above has a protruding plate extending to a part of the middle junction box below. The protruding plate is tightly fitted with the top of the middle junction box to cover the docking part of the middle junction box and the voltage conversion junction box.

5. The perovskite-crystalline silicon composite photovoltaic module according to claim 1, characterized in that: The first connector and the third connector are plug-connected to the T-shaped connector plug, and the second connector and the fourth connector are plug-connected to the T-shaped connector socket; the T-shaped connector plug and the T-shaped connector socket are both "one to two" structures; when the photovoltaic power generation system is assembled, the T-shaped connector plugs and T-shaped connector sockets on adjacent components are plug-connected to each other.

6. The perovskite-crystalline silicon composite photovoltaic module according to claim 1, characterized in that: The current magnitude of the electric energy generated by the crystalline silicon photovoltaic module after conversion by the voltage conversion junction box is within 10% of the current magnitude generated by the perovskite thin film photovoltaic module.

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