Crystalline silicon-perovskite composite photovoltaic module and preparation method thereof

Abstract

The invention provides a crystalline silicon-perovskite composite photovoltaic module and a preparation method thereof. The photovoltaic module comprises a glass front plate, a battery unit, a first adhesive film and a back plate which are sequentially stacked from top to bottom, the battery unit comprises a plurality of transparent conductive layers arranged on the glass positive plate at intervals; the plurality of perovskite cell layers and the plurality of transparent conductive layers are arranged in a one-to-one correspondence manner; a second adhesive film is arranged between any two adjacent perovskite cell layers; the plurality of crystalline silicon cell layers and the plurality of second adhesive films are arranged in a one-to-one correspondence manner, and each crystalline silicon cell layer is arranged on the corresponding second adhesive film; the first wire is connected with the plurality of perovskite cell layers, and two ends of the first wire are located on the outer sides of the plurality of perovskite cell layers to serve as a positive electrode and a negative electrode respectively; and the second wire is connected with the plurality of crystalline silicon cell layers, and two ends of the second wire are located at the outer sides of the plurality of crystalline silicon cell layers to serve as a positive electrode and a negative electrode respectively, so that the problem of low output power of a photovoltaic system in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic systems, and in particular to a crystalline silicon-perovskite composite photovoltaic module and a preparation method thereof. Background Art

[0002] The full name of photovoltaic system is solar photovoltaic power generation system, which is a power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation into electrical energy.

[0003] Photovoltaic systems have certain requirements for light transmittance. In order to meet the light transmittance requirements, photovoltaic systems in the prior art usually have thin-film modules or wide-pitch crystalline silicon photovoltaic modules in the photovoltaic system. Thin-film modules have better weak-light power generation performance and can still generate certain electrical energy under insufficient light conditions.

[0004] However, the photoelectric conversion efficiency of thin-film modules is relatively low, resulting in a low power density and lower output power of the thin-film modules. Wide-pitch crystalline silicon photovoltaic modules have a relatively small number of encapsulated cells due to the large spacing between each cell, which results in a lower output power of the modules.

[0005] In summary, both components in the existing photovoltaic system lead to the output power of the photovoltaic system per unit area. Summary of the invention

[0006] The main purpose of the present invention is to provide a crystalline silicon-perovskite composite photovoltaic module and a preparation method thereof, so as to solve the problem of low output power of photovoltaic systems in the prior art.

[0007] In order to achieve the above object, according to one aspect of the present invention, a crystalline silicon-perovskite composite photovoltaic module is provided, the photovoltaic module comprising: a glass front plate, a battery unit, a first adhesive film, and a back plate stacked in sequence from top to bottom; the battery unit comprises:

[0008] A plurality of transparent conductive layers, wherein the plurality of transparent conductive layers are arranged on the glass front plate at intervals;

[0009] A plurality of perovskite battery layers, wherein the plurality of perovskite battery layers are arranged in one-to-one correspondence with the plurality of transparent conductive layers, and each perovskite battery layer is arranged on a corresponding transparent conductive layer;

[0010] A plurality of second adhesive films, wherein a second adhesive film is disposed between any two adjacent perovskite battery layers;

[0011] A plurality of crystalline silicon cell layers, wherein the plurality of crystalline silicon cell layers are arranged in one-to-one correspondence with the plurality of second adhesive films, and each crystalline silicon cell layer is arranged on a corresponding second adhesive film;

[0012] A first wire is connected to the plurality of perovskite battery layers, and both ends of the first wire are located outside the plurality of perovskite battery layers to serve as a positive electrode and a negative electrode respectively;

[0013] The second wire is connected to the multiple crystalline silicon battery layers, and both ends of the second wire are located outside the multiple crystalline silicon battery layers to serve as a positive electrode and a negative electrode respectively.

[0014] Furthermore, the battery unit also includes: an insulating isolation film, which is arranged between the junction of the first wire and the second wire to electrically isolate the first wire from the second wire.

[0015] Furthermore, the glass front plate further comprises: at least two first lead holes, the at least two first lead holes are arranged on one side of the glass front plate, and two ends of the first wire can be led out from the at least two first lead holes.

[0016] Furthermore, the glass front plate further comprises: at least two second lead holes, and the at least two second lead holes are arranged on a side of the glass front plate away from the first lead holes; or,

[0017] At least two second lead holes are located at the same side as the first lead hole, and two ends of the second wire can be led out from the at least two second lead holes.

[0018] Furthermore, the plurality of transparent conductive layers extend along the first direction and are arranged in sequence along the second direction, and the first direction is perpendicular to the second direction.

[0019] Furthermore, each crystalline silicon cell layer includes a plurality of crystalline silicon cells, and all crystalline silicon cells are arranged along an extension direction of the crystalline silicon cell layer.

[0020] Further, the second wire is arranged on the surface of the crystalline silicon cell layer; and / or,

[0021] The first wire includes a plurality of contact wire segments, which are arranged in one-to-one correspondence with the plurality of perovskite battery layers, and each contact wire segment is U-shaped and contacts three adjacent sides of the corresponding perovskite battery layer.

[0022] Furthermore, the front light-receiving surface of the crystalline silicon cell layer is in the same direction as the front light-receiving surface of the perovskite cell layer.

[0023] Furthermore, the insulating isolation film is made of any one of expandable polyethylene and insulating tape; and / or,

[0024] The material of the first adhesive film and the second adhesive film is any one of ethylene-vinyl acetate copolymer, polyolefin elastomer, and expandable polyethylene; and / or,

[0025] The back panel can be any one of glass and photovoltaic back panel.

[0026] According to another aspect of the present invention, a method for preparing a crystalline silicon-perovskite composite photovoltaic module is provided. The method is applied to the crystalline silicon-perovskite composite photovoltaic module as described above, and the method comprises:

[0027] Further, obtaining a glass front plate;

[0028] Coating a transparent conductive film solution on the glass front plate at equal intervals to form a transparent conductive layer;

[0029] Placing the perovskite cells one by one on the corresponding transparent conductive layers to form a perovskite cell layer;

[0030] Using a first wire to connect each perovskite battery layer, and leading two ends of the first wire out from the first lead hole to serve as a positive electrode and a negative electrode respectively;

[0031] A second adhesive film is provided between any two adjacent perovskite cell layers;

[0032] Placing the crystalline silicon cell on the second adhesive film corresponding thereto to form a crystalline silicon cell layer;

[0033] Using a second wire to connect each crystalline silicon battery layer to obtain a battery unit, and leading two ends of the second wire out from the second lead hole to serve as a positive electrode and a negative electrode respectively;

[0034] The first adhesive film is laid on the battery unit and laminated to obtain a crystalline silicon-perovskite composite photovoltaic module.

[0035] By applying the technical solution of the present invention, the photovoltaic module provided by the present application is used to arrange the perovskite cell layer and the crystalline silicon cell layer on the same level, and together with the glass front plate, the battery unit, the first adhesive film and the back plate, form a crystalline silicon-perovskite composite photovoltaic module that is different from the prior art. Compared with the prior art, it is possible to achieve a greatly improved output power of the photovoltaic module per unit area while meeting the light transmittance requirements, thereby increasing the power generation of the photovoltaic module;

[0036] Integrating perovskite cells and crystalline silicon cells on the same level can improve the overall photoelectric conversion efficiency, because perovskite materials have a higher absorption efficiency for blue light, while crystalline silicon has a higher absorption efficiency for red light and infrared light. The combination of the two can make more comprehensive use of the solar spectrum. At the same time, it will also reduce the amount of materials used while maintaining or improving efficiency, thereby reducing production costs;

[0037] Perovskite materials may degrade at high temperatures, while crystalline silicon cells have better thermal stability. Combining the two can reduce the temperature sensitivity of the perovskite layer through the thermal stability of the crystalline silicon layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0039] Figure 1 A schematic diagram of a photovoltaic module provided in an embodiment of the present application;

[0040] Figure 2 A front view of a battery unit provided in an embodiment of the present application;

[0041] Figure 3 A flow chart of a method for preparing a photovoltaic module provided in an embodiment of the present application;

[0042] Figure 4 A schematic diagram of the arrangement of a glass front panel and battery cells is provided for an embodiment of the present application.

[0043] The above drawings include the following reference numerals:

[0044] 1. Glass front plate; 2. Battery cell; 3. First adhesive film; 4. Back plate; 5. Transparent conductive layer; 6. Perovskite battery layer; 7. Second adhesive film; 8. Crystalline silicon battery layer; 801, Crystalline silicon battery; 9. First wire; 10. Second wire; 11. Insulating isolation film; 12. First lead hole; 13. Second lead hole. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] The full name of photovoltaic system is solar photovoltaic power generation system, which is a power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation into electrical energy.

[0047] Photovoltaic systems have certain requirements for light transmittance. In order to meet the light transmittance requirements, photovoltaic systems in the prior art usually have thin-film modules or wide-pitch crystalline silicon photovoltaic modules in the photovoltaic system. Thin-film modules have better weak-light power generation performance and can still generate certain electrical energy under insufficient light conditions.

[0048] However, the photoelectric conversion efficiency of thin-film modules is relatively low, resulting in a low power density and lower output power of the thin-film modules. Wide-pitch crystalline silicon photovoltaic modules have a relatively small number of encapsulated cells due to the large spacing between each cell, which results in a lower output power of the modules.

[0049] In summary, both components in the existing photovoltaic system lead to the output power of the photovoltaic system per unit area.

[0050] Therefore, the purpose of this application is to provide a crystalline silicon-perovskite composite photovoltaic module and a preparation method thereof based on the above problems.

[0051] Example 1

[0052] like Figures 1 to 4 As shown, the present application provides a crystalline silicon-perovskite composite photovoltaic module, including a glass front plate 1, a battery unit 2, a first adhesive film 3, and a back plate 4 stacked in sequence from top to bottom; the battery unit 2 includes:

[0053] A plurality of transparent conductive layers 5, wherein the plurality of transparent conductive layers 5 are arranged on the glass front plate 1 at intervals;

[0054] A plurality of perovskite battery layers 6, wherein the plurality of perovskite battery layers 6 are arranged in one-to-one correspondence with the plurality of transparent conductive layers 5, and each perovskite battery layer 6 is arranged on the corresponding transparent conductive layer 5;

[0055] A plurality of second adhesive films 7, wherein a second adhesive film 7 is disposed between any two adjacent perovskite battery layers 6;

[0056] A plurality of crystalline silicon cell layers 8, wherein the plurality of crystalline silicon cell layers 8 are arranged in one-to-one correspondence with the plurality of second adhesive films 7, and each crystalline silicon cell layer 8 is arranged on a corresponding second adhesive film 7;

[0057] A first wire 9 is connected to the plurality of perovskite battery layers 6, and both ends of the first wire 9 are located outside the plurality of perovskite battery layers 6 to serve as a positive electrode and a negative electrode respectively;

[0058] The second wire 10 is connected to the multiple crystalline silicon battery layers 8 , and both ends of the second wire 10 are located outside the multiple crystalline silicon battery layers 8 to serve as a positive electrode and a negative electrode respectively.

[0059] like Figure 1 and Figure 2As shown, the present application provides a crystalline silicon-perovskite composite photovoltaic module for the above problems. The photovoltaic module includes a glass front plate 1, a battery unit 2, a first adhesive film 3, and a back plate 4 stacked in sequence from top to bottom, wherein the battery unit 2 includes a plurality of transparent conductive layers 5 arranged at intervals on the glass front plate 1, and the plurality of transparent conductive layers 5 can be arranged at equal intervals or at non-equal intervals according to preset intervals. In this embodiment, the plurality of transparent conductive layers 5 are arranged at equal intervals, and also include a plurality of perovskite battery layers 6. The plurality of perovskite battery layers 6 are arranged one by one with the plurality of transparent conductive layers 5, and each transparent conductive layer 5 is provided with a perovskite battery layer. The perovskite battery layer 6 has a second adhesive film 7 between two adjacent perovskite battery layers 6, and a crystalline silicon battery layer 8 is correspondingly arranged on each second adhesive film 7. The number and position of the crystalline silicon battery layers 8 are arranged in a one-to-one correspondence with the number and position of the second adhesive films 7. The first wire 9 is also included. The first wire 9 connects multiple perovskite battery layers 6. Both ends of the first wire 9 are located outside the perovskite battery layer 6 and serve as a positive electrode and a negative electrode respectively. The second wire 10 is also included. The second wire 10 connects multiple crystalline silicon battery layers 8. Both ends of the second wire 10 are located outside the crystalline silicon battery layer 8 and serve as a positive electrode and a negative electrode respectively.

[0060] The photovoltaic module provided by the present application arranges the perovskite cell layer 6 and the crystalline silicon cell layer 8 on the same plane, and together with the glass front plate 1, the battery unit 2, the first adhesive film 3 and the back plate 4, forms a crystalline silicon-perovskite composite photovoltaic module different from the prior art. Compared with the prior art, it can greatly improve the output power of the photovoltaic module per unit area while meeting the light transmittance requirements, thereby increasing the power generation of the photovoltaic module;

[0061] Integrating the perovskite cell and the crystalline silicon cell 801 on the same level can improve the overall photoelectric conversion efficiency, because the perovskite material has a higher absorption efficiency for blue light, while the crystalline silicon has a higher absorption efficiency for red light and infrared light. The combination of the two can make more comprehensive use of the solar spectrum. At the same time, it can also reduce the amount of materials used while maintaining or improving efficiency, thereby reducing production costs;

[0062] Perovskite materials may degrade at high temperatures, while crystalline silicon cell 801 has better thermal stability. Combining the two can reduce the temperature sensitivity of the perovskite layer through the thermal stability of the crystalline silicon layer.

[0063] Furthermore, the battery unit 2 further includes: an insulating isolation film 11 , which is disposed between the junction of the first wire 9 and the second wire 10 to electrically isolate the first wire 9 from the second wire 10 .

[0064] Specifically, an insulating isolation film 11 is provided at the junction of the first wire 9 and the second wire 10, and the insulating isolation film 11 is used to electrically isolate the first wire 9 from the second wire 10 to avoid direct contact between the first wire 9 and the second wire 10, thereby preventing electrical connection or reduced transmission power.

[0065] Furthermore, the glass front plate 1 further comprises: at least two first lead holes 12 , which are arranged on one side of the glass front plate 1 , and two ends of the first wire 9 can be led out from the at least two first lead holes 12 .

[0066] Specifically, at least two first lead holes 12 are provided on the glass front plate 1 , and at least two first lead holes 12 are located on one side of the glass front plate 1 , wherein two ends of the first wire 9 can be led out from the two ends of the first lead holes 12 as positive and negative electrodes.

[0067] Further, the glass front plate 1 further comprises: at least two second lead holes 13, and the at least two second lead holes 13 are arranged on a side of the glass front plate 1 away from the first lead holes 12; or

[0068] At least two second lead holes 13 and the first lead hole 12 are located on the same side, and two ends of the second wire 10 can be led out from the at least two second lead holes 13 .

[0069] Specifically, the glass positive plate 1 also includes a second lead hole 13 arranged on the glass positive plate 1. There are at least two second lead holes 13. The two second lead holes 13 can be on the same side as the first lead hole 12, or can be arranged on the side of the glass positive plate 1 away from the first lead hole 12. The two ends of the second wire 10 can be led out from at least two second lead holes 13.

[0070] Furthermore, the plurality of transparent conductive layers 5 extend along the first direction and are arranged in sequence along the second direction, and the first direction is perpendicular to the second direction.

[0071] Specifically, the plurality of transparent conductive layers 5 extend along a first direction, which is the length direction of the glass front plate 1 , and the plurality of transparent conductive layers are arranged in sequence along a second direction, which is the width direction of the glass front plate 1 , and is perpendicular to the first direction.

[0072] Furthermore, each crystalline silicon cell layer 8 includes a plurality of crystalline silicon cells 801 , and all crystalline silicon cells 801 are arranged along the extension direction of the crystalline silicon cell layer 8 .

[0073] Specifically, each crystalline silicon cell layer 8 includes a plurality of crystalline silicon cells 801 , and the plurality of crystalline silicon cells 801 are arranged in sequence along a first direction.

[0074] Further, the second wire 10 is arranged on the surface of the crystalline silicon cell layer 8; and / or,

[0075] The first wire 9 includes a plurality of contact wire segments, which are arranged in one-to-one correspondence with the plurality of perovskite battery layers 6 , and each contact wire segment is U-shaped and contacts three adjacent sides of the corresponding perovskite battery layer 6 .

[0076] Specifically, the second wire 10 is arranged on the surface of the crystalline silicon cell layer 8, and the first wire 9 includes a plurality of contact wire segments connected in sequence, and the plurality of wire segments are arranged one by one corresponding to the plurality of perovskite cells. All the contact wire segments are U-shaped and correspond to the three sides of the perovskite cell layer 6. The second wire 10 connects all the perovskite cell layers 6 and is arranged in a serpentine shape to output the electric energy generated by the perovskite cell layer 6.

[0077] Furthermore, the front light-receiving surface of the crystalline silicon cell layer 8 is in the same direction as the front light-receiving surface of the perovskite cell layer 6 .

[0078] Specifically, the front light-receiving surface of the crystalline silicon cell layer 8 is in the same direction as the front light-receiving surface of the perovskite cell layer 6. The same direction of the light-receiving surfaces means that the two cell layers can be arranged more closely, thereby improving the utilization of space, so that the solar cell module can generate more electricity in a limited space.

[0079] If the light-receiving surfaces of the two battery layers are in the same direction, then in the case of partial shading, the impact on the overall performance may be reduced because the shading affects the two battery layers more evenly.

[0080] Further, the insulating isolation film 11 is made of any one of expandable polyethylene and insulating tape; and / or,

[0081] The material of the first adhesive film 3 and the second adhesive film 7 is any one of ethylene-vinyl acetate copolymer, polyolefin elastomer, and expandable polyethylene; and / or,

[0082] The back sheet 4 can be any one of glass and photovoltaic back sheet 4 .

[0083] Specifically, the material of the insulating isolation film 11 is any one of EPE (expandable polyethylene) and insulating tape, the material of the first adhesive film 3 and the second adhesive film 7 is any one of ethylene-vinyl acetate copolymer, polyolefin elastomer, and expandable polyethylene; and / or, the back panel 4 is any one of glass and photovoltaic back panel 4.

[0084] Example 2

[0085] The present application provides a method for preparing a crystalline silicon-perovskite photovoltaic module based on Example 1. The method is applied to the above-mentioned crystalline silicon-perovskite composite photovoltaic module. The method comprises:

[0086] S1, obtaining a glass front plate 1;

[0087] S2, coating the transparent conductive film solution on the glass front plate 1 at equal intervals to form a transparent conductive layer 5;

[0088] S3, placing the perovskite cells one by one on the corresponding transparent conductive layer 5 to form a perovskite cell layer 6;

[0089] S4, using the first wire 9 to connect each perovskite battery layer 6, and leading the two ends of the first wire 9 out from the first lead hole 12 to serve as a positive electrode and a negative electrode respectively;

[0090] S5, setting a second adhesive film 7 between any two adjacent perovskite cell layers 6;

[0091] S6, placing the crystalline silicon cell 801 on the second adhesive film 7 corresponding thereto to form a crystalline silicon cell layer 8;

[0092] S7, using the second wire 10 to connect each crystalline silicon battery layer 8 to obtain a battery unit 2, and leading the two ends of the second wire 10 out from the second lead hole 13 to serve as a positive electrode and a negative electrode respectively;

[0093] S8, laying the first adhesive film 3 on the battery unit 2, and laminating to obtain a crystalline silicon-perovskite composite photovoltaic module.

[0094] Specifically, Figure 3 As shown, first obtain a glass positive plate 1, and then coat the conductive film solution on the glass positive plate 1 at equal intervals to form a transparent conductive layer 5. After the transparent conductive layer 5 is formed, the perovskite cells are placed one by one on the transparent conductive layer 5 to form a perovskite cell layer 6. The perovskite cells are connected in a serpentine shape using a first wire 9 to form a shape as shown in Figure X, and then the two ends of the first wire 9 are led out from the two first lead holes 12 and used as the positive electrode and the negative electrode respectively, and then a second adhesive film 7 is set between any two adjacent perovskite cell layers 6, and then the crystalline silicon cell 801 is placed on the expected corresponding second adhesive film 7 to form a crystalline silicon cell layer 8, and then the second wire 10 is used to connect each crystalline silicon cell 801 to obtain a battery unit 2, and the two ends of the second wire 10 are led out from the second lead hole 13 to serve as the positive electrode and the negative electrode respectively, and then the first adhesive film 3 is laid on the battery unit 2 to obtain a crystalline silicon-perovskite composite photovoltaic module.

[0095] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: through the photovoltaic module provided in the present application, the perovskite battery layer 6 and the crystalline silicon battery layer 8 are arranged on the same level, and together with the glass front plate 1, the battery unit 2, the first adhesive film 3 and the back plate 4, a crystalline silicon-perovskite composite photovoltaic module different from the prior art is formed. Compared with the prior art, it can achieve the premise of meeting the light transmittance requirements, and greatly improve the output power of the photovoltaic module per unit area, thereby increasing the power generation of the photovoltaic module;

[0096] Integrating the perovskite cell and the crystalline silicon cell 801 on the same level can improve the overall photoelectric conversion efficiency, because the perovskite material has a higher absorption efficiency for blue light, while the crystalline silicon has a higher absorption efficiency for red light and infrared light. The combination of the two can make more comprehensive use of the solar spectrum. At the same time, it can also reduce the amount of materials used while maintaining or improving efficiency, thereby reducing production costs;

[0097] Perovskite materials may degrade at high temperatures, while crystalline silicon cell 801 has better thermal stability. Combining the two can reduce the temperature sensitivity of the perovskite layer through the thermal stability of the crystalline silicon layer.

[0098] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0099] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0100] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0101] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0102] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0103] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crystalline silicon-perovskite composite photovoltaic module, comprising a glass front plate (1), a battery unit (2), a first adhesive film (3), and a back plate (4) stacked in sequence from top to bottom; characterized in that: The battery unit (2) comprises: A plurality of transparent conductive layers (5), wherein the plurality of transparent conductive layers (5) are arranged at intervals on the glass front plate (1); A plurality of perovskite battery layers (6), wherein the plurality of perovskite battery layers (6) are arranged in one-to-one correspondence with the plurality of transparent conductive layers (5), and each of the perovskite battery layers (6) is arranged on the corresponding transparent conductive layer (5); A plurality of second adhesive films (7), wherein one second adhesive film (7) is disposed between any two adjacent perovskite battery layers (6); A plurality of crystalline silicon cell layers (8), wherein the plurality of crystalline silicon cell layers (8) are arranged in one-to-one correspondence with the plurality of second adhesive films (7), and each crystalline silicon cell layer (8) is arranged on a corresponding second adhesive film (7); A first conductive wire (9) connected to the plurality of perovskite battery layers (6), wherein both ends of the first conductive wire (9) are located outside the plurality of perovskite battery layers (6) to serve as a positive electrode and a negative electrode respectively; The second wire (10) is connected to the plurality of crystalline silicon battery layers (8), and both ends of the second wire (10) are located outside the plurality of crystalline silicon battery layers (8) to serve as a positive electrode and a negative electrode respectively.

2. The crystalline silicon-perovskite composite photovoltaic module according to claim 1, characterized in that: The battery unit (2) further comprises: An insulating isolation film (11), the insulating isolation film (11) is arranged between the junction of the first conductive wire (9) and the second conductive wire (10), and is used to electrically isolate the first conductive wire (9) from the second conductive wire (10).

3. The crystalline silicon-perovskite composite photovoltaic module according to claim 1, characterized in that: The glass front plate (1) further comprises: At least two first lead holes (12), the at least two first lead holes (12) are arranged on one side of the glass front plate (1), and the two ends of the first wire (9) can be led out from the at least two first lead holes (12).

4. The crystalline silicon-perovskite composite photovoltaic module according to claim 3, characterized in that: The glass front plate (1) further comprises: at least two second lead holes (13), the at least two second lead holes (13) being arranged on a side of the glass front plate (1) away from the first lead hole (12); or The at least two second lead holes (13) and the first lead hole (12) are located on the same side, and both ends of the second wire (10) can be led out from the at least two second lead holes (13).

5. The crystalline silicon-perovskite composite photovoltaic module according to claim 1, characterized in that: The plurality of transparent conductive layers (5) all extend along a first direction and are arranged in sequence along a second direction, wherein the first direction is perpendicular to the second direction.

6. The crystalline silicon-perovskite composite photovoltaic module according to claim 1, characterized in that: Each of the crystalline silicon cell layers (8) comprises a plurality of crystalline silicon cells (801), and all of the crystalline silicon cells (801) are arranged along the extension direction of the crystalline silicon cell layer (8).

7. The crystalline silicon-perovskite composite photovoltaic module according to claim 1, characterized in that: The second conductive line (10) is arranged on the surface of the crystalline silicon cell layer (8); and / or The first wire (9) comprises a plurality of contact wire segments, the plurality of contact wire segments being arranged in one-to-one correspondence with a plurality of perovskite battery layers (6), each of the contact wire segments being U-shaped and in contact with three adjacent sides of the corresponding perovskite battery layer (6).

8. The crystalline silicon-perovskite composite photovoltaic module according to claim 1, characterized in that: The front light-receiving surface of the crystalline silicon cell layer (8) is in the same direction as the front light-receiving surface of the perovskite cell layer (6).

9. The crystalline silicon-perovskite composite photovoltaic module according to claim 1, characterized in that: The insulating isolation film (11) is made of any one of expandable polyethylene and insulating tape; and / or The material of the first adhesive film (3) and the second adhesive film (7) is any one of ethylene-vinyl acetate copolymer, polyolefin elastomer, and expandable polyethylene; and / or The back panel (4) may be any one of glass and photovoltaic back panel.

10. A method for preparing a crystalline silicon-perovskite composite photovoltaic module, characterized in that: The preparation method is applied to the crystalline silicon-perovskite composite photovoltaic module as described in any one of the above items, and the preparation method comprises: Get the glass front plate; Coating a transparent conductive film solution on the glass front plate at equal intervals to form a transparent conductive layer; Placing the perovskite cells one by one on the corresponding transparent conductive layers to form a perovskite cell layer; Using a first wire to connect each of the perovskite battery layers, and leading two ends of the first wire out from the first lead hole to serve as a positive electrode and a negative electrode respectively; Disposing a second adhesive film between any two adjacent perovskite battery layers; Placing a crystalline silicon cell on the second adhesive film corresponding thereto to form a crystalline silicon cell layer; Using a second wire to connect each of the crystalline silicon battery layers to obtain a battery unit, and leading two ends of the second wire out from the second lead hole to serve as a positive electrode and a negative electrode respectively; The first adhesive film is laid on the battery unit and laminated to obtain a crystalline silicon-perovskite composite photovoltaic module.

Images