Series-parallel perovskite photovoltaic cell and electronic device

Abstract

The utility model discloses a series-parallel connection type perovskite photovoltaic cell and an electronic device, the series-parallel connection type perovskite photovoltaic cell is defined to have a first direction, and a first cell group comprises at least one group of P1 etching lines, P2 etching lines and P3 etching lines which are sequentially arranged along the first direction so as to form at least two first sub-cells which are connected in series; and the second battery pack comprises at least one group of P3 etching lines, P2 etching lines and P1 etching lines which are sequentially arranged along the first direction so as to form at least two second sub-batteries which are connected in series. The connecting structure is used for insulating and separating the transparent conductive layer of the first battery pack from the transparent conductive layer of the second battery pack. According to the technical scheme provided by the invention, the processing efficiency of the series-parallel perovskite photovoltaic cell can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic cell technical field especially relates to a series -parallel type perovskite photovoltaic cell and electronic equipment. BACKGROUND

[0002] Perovskite photovoltaic cell has the advantages such as photoelectric conversion efficiency, in the short time of a few years, the conversion efficiency of perovskite photovoltaic cell has the breakthrough greatly, and thus becomes the solar cell with the most prospect.

[0003] Most perovskite photovoltaic cells are formed by a plurality of sub-cells in series to increase voltage. In some application scenarios, perovskite photovoltaic cells need to output a specific voltage. Generally, by adding a parallel mode on the basis of sub-cell series connection, the voltage of the perovskite photovoltaic cell is appropriately reduced to achieve output of a specific voltage. At present, the structure of the perovskite photovoltaic cell is realized in parallel, and the positive and negative poles of each parallel battery group need to be pasted with a bus bar as the positive or negative pole lead-out. The perovskite photovoltaic cell needs to be pasted with more bus bars, resulting in low processing efficiency. SUMMARY

[0004] The main purpose of the utility model is to provide a series-parallel perovskite photovoltaic cell and electronic equipment, which aims to reduce the number of bus bars to improve processing efficiency.

[0005] To achieve the above purpose, the series-parallel perovskite photovoltaic cell provided by the utility model comprises a transparent substrate, a first battery group, a second battery group and a connecting structure, the first battery group, the second battery group and the connecting structure are all arranged on the transparent substrate, and the connecting structure is located between the first battery group and the second battery group.

[0006] The first battery group and the second battery group each comprise a transparent conductive layer, a first carrier transport layer, a perovskite layer, a second carrier transport layer and an electrode layer which are stacked in sequence, the transparent conductive layer is arranged on the transparent substrate, and the polarities of the carriers of the first carrier transport layer and the second carrier transport layer are opposite.

[0007] A plurality of P1 etching lines are arranged on the transparent conductive layer, a plurality of P2 etching lines are arranged through the first carrier transport layer, the perovskite layer and the second carrier transport layer, the electrode layer is connected to the transparent conductive layer through the P2 etching lines, and a plurality of P3 etching lines are arranged through the electrode layer, the second carrier transport layer and the perovskite layer.

[0008] The series-parallel type perovskite photovoltaic cell has a first direction, the first cell group comprises at least one set of the P1 etching line, the P2 etching line and the P3 etching line arranged in sequence along the first direction to form at least two first sub-cells in series; and the second cell group comprises at least one set of the P3 etching line, the P2 etching line and the P1 etching line arranged in sequence along the first direction to form at least two second sub-cells in series.

[0009] The connecting structure is used to insulate and separate the transparent conductive layer of the first cell group and the transparent conductive layer of the second cell group.

[0010] In a possible implementation of the present application, the connecting structure comprises, in sequence, a transparent conductive layer, a first carrier transport layer, a perovskite layer, a second carrier transport layer and an electrode layer, and the transparent conductive layer of the connecting structure is provided with at least one P1 etching line.

[0011] In a possible implementation of the present application, the transparent conductive layer of the connecting structure is provided with two P1 etching lines spaced apart from each other along the first direction.

[0012] In the connecting structure, at least one P3 etching line is arranged between the two P1 etching lines.

[0013] In a possible implementation of the present application, in the connecting structure, two P3 etching lines are arranged in sequence along the first direction, and both of the two P3 etching lines are located between the two P1 etching lines.

[0014] In a possible implementation of the present application, in the connecting structure, the P1 etching line, the P2 etching line, the P3 etching line, the P3 etching line, the P2 etching line and the P1 etching line are arranged in sequence along the first direction.

[0015] In a possible implementation of the present application, the series-parallel type perovskite photovoltaic cell further comprises a first bus bar, the first bus bar is attached to the connecting structure and covers the two P3 etching lines of the connecting structure.

[0016] In a possible implementation of the present application, the transparent conductive layer extends in a direction opposite to the first direction to form a first lead-out section protruding from the first carrier transport layer, and the transparent conductive layer extends along the first direction to form a second lead-out section protruding from the first carrier transport layer.

[0017] The series-parallel type perovskite photovoltaic cell further comprises a second bus bar and a third bus bar, the second bus bar is connected to the first lead-out section, and the third bus bar is connected to the second lead-out section.

[0018] In a possible implementation of the present application, the series-parallel perovskite photovoltaic cell further comprises a fourth bus bar and an insulating pad, a first end of the fourth bus bar is connected to the second bus bar, a second end of the fourth bus bar is connected to the third bus bar across the electrode layer, and the fourth bus bar is provided with the insulating pad between the fourth bus bar and the electrode layer.

[0019] In a possible implementation of the present application, the series-parallel perovskite photovoltaic cell further comprises a protective cover and a sealing glue, the protective cover and the transparent substrate are oppositely arranged, the sealing glue is arranged between the protective cover and the transparent substrate, and the protective cover, the sealing glue and the transparent substrate form a sealed cavity, and the transparent conductive layer, the first carrier transport layer, the perovskite layer, the second carrier transport layer and the electrode layer are located in the sealed cavity.

[0020] One end of the first bus bar extends through the sealing glue, the fourth bus bar is provided with a lead-out portion, and the lead-out portion extends through the sealing glue.

[0021] The utility model further provides an electronic equipment, including electronic device and as the series-parallel perovskite photovoltaic cell of above-mentioned, series-parallel perovskite photovoltaic cell and electronic device electric connection.

[0022] In the technical scheme of the utility model, the first battery group includes at least one group of P1 etching lines, P2 etching lines and P3 etching lines arranged in sequence along the first direction to form at least two series-connected first sub-cells, the second battery group includes at least one group of P3 etching lines, P2 etching lines and P1 etching lines arranged in sequence along the first direction to form at least two series-connected second sub-cells, and the connecting structure is used for insulating and spacing the transparent conductive layers of the first battery group and the second battery group, so that the polarities of the electrodes of the first battery group and the second battery group near the connecting structure are the same, so that one bus bar can be used to connect and lead out the electrodes of the first battery group and the second battery group near the connecting structure, that is, one electrode of the first battery group and one electrode of the second battery group near the connecting structure can share the same bus bar, so that the number of bus bars is reduced, and the processing efficiency can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0024] Figure 1 A cross-sectional structure schematic view of one embodiment of the series-parallel type perovskite photovoltaic cell provided by the present application is provided.

[0025] Figure 2 A schematic view of the electronic device provided by the present application is provided.

[0026] Explanation of reference numerals:

[0027] 1000, electronic device; 100, series-parallel type perovskite photovoltaic cell; 10, transparent substrate; 20, first battery pack; 21, first sub-cell; 30, second battery pack; 31, second sub-cell; 40, connecting structure; 11, transparent conductive layer; 111, first lead-out section; 112, second lead-out section; 12, first carrier transport layer; 13, perovskite layer; 14, second carrier transport layer; 15, electrode layer; 16, protective cover; 100a, P1 etching line; 100b, P2 etching line; 100c, P3 etching line; 50, first bus bar; 60, second bus bar; 70, third bus bar; 300, electronic device.

[0028] The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0030] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] Most perovskite photovoltaic cells consist of several sub-cells connected in series to increase voltage. However, in some applications, perovskite photovoltaic cells need to output a specific voltage. This is typically achieved by adding parallel connections to the series-connected sub-cells, appropriately reducing the voltage of the perovskite photovoltaic cell to achieve the desired output voltage. Currently, the parallel structure of perovskite photovoltaic cells requires a busbar to be attached to the positive and negative terminals of each parallel cell group. This results in a large number of busbars being needed for the entire perovskite photovoltaic cell, leading to low manufacturing efficiency.

[0033] This application proposes a series-parallel perovskite photovoltaic cell designed to reduce the number of busbars required to improve processing efficiency.

[0034] The specific structure of the series-parallel perovskite photovoltaic cell of this application will be described below:

[0035] like Figure 1 As shown, in one embodiment of the series-parallel perovskite photovoltaic cell 100 of this utility model, the series-parallel perovskite photovoltaic cell 100 includes a transparent substrate 10, a first battery pack 20, a second battery pack 30, and a connecting structure 40. The transparent substrate 10 can be glass, a plastic film, or other effective transparent substrates. The first battery pack 20, the second battery pack 30, and the connecting structure 40 are all disposed on the transparent substrate 10, meaning that the first battery pack 20, the second battery pack 30, and the connecting structure 40 are all disposed on the transparent substrate 10. The first battery pack 20 and the second battery pack 30 are spaced apart, and the connecting structure 40 is located between the first battery pack 20 and the second battery pack 30.

[0036] The first battery group 20 and the second battery group 30 each include a transparent conductive layer 11, a first carrier transport layer 12, a perovskite layer 13, a second carrier transport layer 14, and an electrode layer 15 which are sequentially stacked, and the transparent conductive layer 11 is provided on the transparent substrate 10. The transparent conductive layer 11 can be ITO (Indium Tin Oxide), FTO (Fluorine-doped Tin Oxide), or other effective transparent conductive material. The perovskite layer 13 is used to absorb light and generate photo-generated electrons and holes. The electrode layer 15 is used for conduction, and the material of the electrode layer 15 can be copper, silver, or other effective conductive material. The polarities of the carriers of the first carrier transport layer 12 and the second carrier transport layer 14 are opposite, for example, if the first carrier transport layer 12 transports electrons, the second carrier transport layer 14 transports holes. If the first carrier transport layer 12 transports holes, the second carrier transport layer 14 transports electrons.

[0037] A plurality of P1 etching lines 100a are provided on the transparent conductive layer 11. The first carrier transport layer 12, the perovskite layer 13, and the second carrier transport layer 14 are provided with a plurality of P2 etching lines 100b, and the electrode layer 15 is connected to the transparent conductive layer 11 through the P2 etching lines 100b, that is, the electrode layer 15 is conductively connected to the transparent conductive layer 11 through the P2 etching lines 100b. In actual processing, the P2 etching lines 100b are first completed, and then the electrode layer 15 is formed by deposition, and the material deposited at the same time also enters the P2 etching lines 100b, thereby forming the conductive connection between the electrode layer 15 and the transparent conductive layer 11. The electrode layer 15, the second carrier transport layer 14, and the perovskite layer 13 are provided with a plurality of P3 etching lines 100c, which means that each P3 etching line 100c passes through the electrode layer 15, the second carrier transport layer 14, and the perovskite layer 13.

[0038] It should be noted that the P1 etching lines 100a, the P2 etching lines 100b, and the P3 etching lines 100c can be formed by laser etching, chemical etching, or other effective methods.

[0039] The series-parallel perovskite photovoltaic cell 100 is defined to have a first direction, the first battery group 20 includes at least one group of battery cells arranged along the first direction, Figure 1The P1 etching line 100a, the P2 etching line 100b, and the P3 etching line 100c arranged in sequence in the first direction form at least two first sub-cells 21 connected in series. The second battery group 30 includes at least one group of P3 etching lines 100c, P2 etching lines 100b, and P1 etching lines 100a arranged in sequence in the first direction to form at least two second sub-cells 31 connected in series. It should be noted that in the first battery group 20, the P1 etching line 100a, the P2 etching line 100b, and the P3 etching line 100c arranged in sequence in the first direction can be arranged in one group, two groups, three groups, four groups, five groups, six groups, seven groups, etc. The specific number can be set according to actual needs, and is not limited herein. That is, in the first battery group 20, the number of first sub-cells 21 connected in series can be two, three, four, five, six, seven, eight, etc. The specific number can be set according to actual needs, and is not limited herein.

[0040] In the second battery group 30, the P1 etching line 100a, the P2 etching line 100b, and the P3 etching line 100c arranged in sequence in the first direction can be arranged in one group, two groups, three groups, four groups, five groups, six groups, seven groups, etc. The specific number can be set according to actual needs, and is not limited herein. That is, in the second battery group 30, the number of second sub-cells 31 connected in series can be two, three, four, five, six, seven, eight, etc. The specific number can be set according to actual needs, and is not limited herein.

[0041] The P1 etching line 100a, the P2 etching line 100b, and the P3 etching line 100c function to divide the film layer acted on into two parts. Of course, the plurality of P1 etching lines 100a, the plurality of P2 etching lines 100b, and the plurality of P3 etching lines 100c function to divide the film layer acted on into multiple parts.

[0042] The connection structure 40 is used to insulate and separate the transparent conductive layer 11 of the first battery group 20 and the transparent conductive layer 11 of the second battery group 30.

[0043] It can be understood that by comprising at least one group of P1 etching lines 100a, P2 etching lines 100b and P3 etching lines 100c arranged in sequence along the first direction to form at least two first sub-cells 21 connected in series, the second battery group 30 comprises at least one group of P3 etching lines 100c, P2 etching lines 100b and P1 etching lines 100a arranged in sequence along the first direction to form at least two second sub-cells 31 connected in series, and the connecting structure 40 is used to insulate and separate the transparent conductive layer 11 of the first battery group 20 and the transparent conductive layer 11 of the second battery group 30, so that the polarities of the electrodes of the first battery group 20 and the second battery group 30 near the connecting structure 40 are the same, so that one bus bar can be used to connect and lead out the electrodes of the first battery group 20 and the second battery group 30 near the connecting structure 40, that is, one electrode of the first battery group 20 and one electrode of the second battery group 30 near the connecting structure 40 can share the same bus bar, thereby reducing the number of bus bars, and further improving the processing efficiency. It should be noted that the bus bar can be a conductive tape, a conductive silver paste bus bar, or other effective conductive strips.

[0044] As shown in the embodiment of the series-parallel type perovskite photovoltaic cell 100 of the present application, the connecting structure 40 comprises a transparent conductive layer 11, a first carrier transport layer 12, a perovskite layer 13, a second carrier transport layer 14 and an electrode layer 15 which are stacked in sequence. Figure 1 As shown in the embodiment of the series-parallel type perovskite photovoltaic cell 100 of the present application, the connecting structure 40 comprises a transparent conductive layer 11, a first carrier transport layer 12, a perovskite layer 13, a second carrier transport layer 14 and an electrode layer 15 which are stacked in sequence.

[0045] As shown in the embodiment of the series-parallel type perovskite photovoltaic cell 100 of the present application, the connecting structure 40 comprises a transparent conductive layer 11, a first carrier transport layer 12, a perovskite layer 13, a second carrier transport layer 14 and an electrode layer 15 which are stacked in sequence. Figure 1 As shown in the embodiment of the series-parallel type perovskite photovoltaic cell 100 of the present application, the connecting structure 40 comprises a transparent conductive layer 11, a first carrier transport layer 12, a perovskite layer 13, a second carrier transport layer 14 and an electrode layer 15 which are stacked in sequence. As shown in the embodiment of the series-parallel type perovskite photovoltaic cell 100 of the present application, the connecting structure 40 comprises a transparent conductive layer 11, a first carrier transport layer 12, a perovskite layer 13, a second carrier transport layer 14 and an electrode layer 15 which are stacked in sequence.

[0046] As Figure 1 shown, in the connecting structure 40 of the embodiment of the series-parallel type perovskite photovoltaic cell 100, two P3 etching lines 100c are sequentially arranged along the first direction, and the two P3 etching lines 100c are located between the two P1 etching lines 100a. The two P3 etching lines on the connecting structure 40 can play a marking role, which is convenient for the operator to quickly locate the position of the bus bar.

[0047] As Figure 1 shown, in the connecting structure 40 of the embodiment of the series-parallel type perovskite photovoltaic cell 100, P1 etching lines 100a, P2 etching lines 100b, P3 etching lines 100c, P3 etching lines 100c, P2 etching lines 100b and P1 etching lines 100a are sequentially arranged along the first direction.

[0048] In this way, in the first direction, among the first battery group 20, the connecting structure 40 and the second battery group 20, the local part presents P1 etching lines 100a, P2 etching lines 100b, P3 etching lines 100c, P1 etching lines 100a, P2 etching lines 100b, P3 etching lines 100c, P3 etching lines 100c, P2 etching lines 100b, P1 etching lines 100a, P3 etching lines 100c, P2 etching lines 100b and P1 etching lines 100a, wherein the P1 etching lines 100a, the P2 etching lines 100b, the P3 etching lines 100c, the P3 etching lines 100c, the P2 etching lines 100b and the P1 etching lines 100a belong to the connecting structure 40, so that the process variation can be reduced for forming the connecting structure 40.

[0049] As Figure 1 shown, in the embodiment of the series-parallel type perovskite photovoltaic cell 100, the series-parallel type perovskite photovoltaic cell 100 further comprises a first bus bar 50, the first bus bar 50 is attached to the connecting structure 40 and covers the two P3 etching lines 100c of the connecting structure 40. The first bus bar 50 can be a conductive adhesive tape, a conductive silver paste bus bar or other effective conductive strips.

[0050] Understandably, by attaching the first bus bar 50 to the connecting structure 40 and covering the two P3 etching lines 100c of the connecting structure 40, the electrode layer 15 of the first battery group 20 and the electrode layer 15 of the second battery group 30 are electrically connected in order to realize the parallel connection of the first battery group 20 and the second battery group 30. Moreover, in this way, the battery short circuit formed by the connecting structure 40, that is, the electrode layer 15 of the connecting structure 40 and the transparent conductive layer 11 are electrically connected, since the connecting structure 40 is not connected in series or parallel with the first battery group 20 or the second battery group 30, so that the voltage generated by the connecting structure 40 can be avoided.

[0051] As Figure 1 shown, in an embodiment of the series-parallel type perovskite photovoltaic cell 100 of the present application, the transparent conductive layer 11 extends in the opposite direction of the first direction to form a first lead-out node 111 protruding from the first carrier transport layer 12, and the transparent conductive layer 11 extends in the first direction to form a second lead-out node 112 protruding from the first carrier transport layer 12. The series-parallel type perovskite photovoltaic cell 100 further comprises a second bus bar 60 and a third bus bar 70, the second bus bar 60 being connected to the first lead-out node 111, and the third bus bar 70 being connected to the second lead-out node 112.

[0052] It can be understood that by connecting the second bus bar 60 to the first lead-out node 111 and connecting the third bus bar 70 to the second lead-out node 112, one electrode of the first battery group 20 and one electrode of the second battery group 30 can be led out to facilitate parallel connection.

[0053] As Figure 1 shown, in an embodiment of the series-parallel type perovskite photovoltaic cell 100 of the present application, the series-parallel type perovskite photovoltaic cell 100 further comprises a fourth bus bar and an insulating pad, the first end of the fourth bus bar being connected to the second bus bar 60, the second end of the fourth bus bar crossing the electrode layer 15 and being connected to the third bus bar 70, and the fourth bus bar and the electrode layer 15 being provided with the insulating pad. It should be noted that the second bus bar 60, the third bus bar 70 and the fourth bus bar 50 can be conductive adhesive tape, conductive silver paste bus bar, or other effective conductive strips. The insulating pad can be an insulating rubber pad, insulating paper, or other effective insulating pads.

[0054] It can be understood that by connecting the second bus bar 60 to the first lead-out node 111 and connecting the third bus bar 70 to the second lead-out node 112, one electrode of the first battery group 20 and one electrode of the second battery group 30 can be led out to facilitate parallel connection.

[0055] As Figure 1As shown, in the series-parallel type perovskite photovoltaic cell 100 embodiment of the utility model, the series-parallel type perovskite photovoltaic cell 100 still includes protective cover 16 and sealing glue.The protective cover 16 can be glass cover, also can be plastic cover, still can be other effective cover body.The sealing glue can be butyl glue, also can be UV glue, still can be other effective sealing glue.The protective cover 16 and transparent substrate 10 are oppositely arranged, and the sealing glue is arranged between the protective cover 16 and transparent substrate 10, the protective cover 16, sealing glue, transparent substrate 10 form the sealing cavity, and transparent conductive layer 11, first carrier transport layer 12, perovskite layer 13, second carrier transport layer 14, electrode layer 15 are all located in the sealing cavity.The one end of first bus bar 50 extends through the sealing glue, and fourth bus bar is provided with lead-out part, and the lead-out part extends through the sealing glue.Setting like this, the lead-out part and the one end of first bus bar 50 can be used as the positive and negative electrode of series-parallel type perovskite photovoltaic cell 100, and the sealing of series-parallel type perovskite photovoltaic cell 100 can be realized.

[0056] Referring to Figure 2 The utility model also proposes an electronic equipment 1000, including electronic device 300 and series-parallel type perovskite photovoltaic cell 100.Series-parallel type perovskite photovoltaic cell 100 and electronic device 300 electric connection, refers to the positive and negative electrode of series-parallel type perovskite photovoltaic cell 100 is connected in electronic device 300 respectively, to provide electric energy for electronic device 300.The specific structure of this series-parallel type perovskite photovoltaic cell 100 refers to the above-mentioned embodiment, since electronic equipment 1000 has adopted all the technical solutions of the above-mentioned embodiment, therefore at least has all the beneficial effects brought by the technical scheme of the above-mentioned embodiment, here will not repeat.

[0057] Electronic device 300 can be but is not limited to electronic calculator, electronic book reader, wearable device, camera head and the like.

[0058] The above-mentioned only is the example embodiment of the utility model, and does not limit the patent range of the utility model, and all equivalent structural transformations made by the utility model specification and attached drawing contents, or direct / indirect application in other related technical fields under the technical concept of the utility model are included in the patent protection range of the utility model.

Claims

1. A series-parallel type perovskite photovoltaic cell, characterized by, The series-parallel type perovskite photovoltaic cell comprises a transparent substrate, a first battery, a second battery and a connecting structure, the first battery, the second battery and the connecting structure are arranged on the transparent substrate, and the connecting structure is located between the first battery and the second battery. The first battery and the second battery each comprise a transparent conductive layer, a first carrier transport layer, a perovskite layer, a second carrier transport layer and an electrode layer which are sequentially stacked, the transparent conductive layer is arranged on the transparent substrate, and the polarities of the carriers of the first carrier transport layer and the second carrier transport layer are opposite. A plurality of P1 etching lines are arranged on the transparent conductive layer, a plurality of P2 etching lines are arranged through the first carrier transport layer, the perovskite layer and the second carrier transport layer, the electrode layer is connected to the transparent conductive layer through the P2 etching lines, and a plurality of P3 etching lines are arranged through the electrode layer, the second carrier transport layer and the perovskite layer. The series-parallel type perovskite photovoltaic cell has a first direction, the first battery comprises at least one group of the P1 etching lines, the P2 etching lines and the P3 etching lines which are arranged in sequence along the first direction to form at least two first sub-batteries in series. The second battery comprises at least one group of the P3 etching lines, the P2 etching lines and the P1 etching lines which are arranged in sequence along the first direction to form at least two second sub-batteries in series. The connecting structure is used for insulating and spacing the transparent conductive layers of the first battery and the second battery.

2. The series-parallel perovskite photovoltaic cell of claim 1, wherein, The connecting structure comprises a transparent conductive layer, a first carrier transport layer, a perovskite layer, a second carrier transport layer and an electrode layer which are sequentially stacked, and the transparent conductive layer of the connecting structure is provided with at least one P1 etching line.

3. The series-parallel perovskite photovoltaic cell of claim 2, wherein, The transparent conductive layer of the connecting structure is sequentially provided with two P1 etching lines which are spaced apart from each other along the first direction. In the connecting structure, at least one P3 etching line is arranged between the two P1 etching lines.

4. The series-parallel perovskite photovoltaic cell of claim 3, wherein, In the connecting structure, two P3 etching lines are sequentially arranged along the first direction, and both of the two P3 etching lines are located between the two P1 etching lines.

5. The series-parallel perovskite photovoltaic cell of claim 3, wherein, In the connecting structure, the P1 etching lines, the P2 etching lines, the P3 etching lines, the P3 etching lines, the P2 etching lines and the P1 etching lines are sequentially arranged along the first direction.

6. The series-parallel perovskite photovoltaic cell of claim 5, wherein, The series-parallel type perovskite photovoltaic cell further comprises a first bus bar, the first bus bar is attached to the connecting structure and covers the two P3 etching lines of the connecting structure.

7. The series-parallel perovskite photovoltaic cell of claim 6, wherein, The transparent conductive layer extends in a direction opposite to the first direction to form a first lead-out node protruding from the first carrier transport layer, and the transparent conductive layer extends in the first direction to form a second lead-out node protruding from the first carrier transport layer. The series-parallel type perovskite photovoltaic cell further comprises a second bus bar and a third bus bar, the second bus bar is connected to the first lead-out node, and the third bus bar is connected to the second lead-out node.

8. The series-parallel perovskite photovoltaic cell of claim 7, wherein, The series-parallel type perovskite photovoltaic cell further comprises a fourth bus bar and an insulating pad, a first end of the fourth bus bar is connected to the second bus bar, a second end of the fourth bus bar is connected to the third bus bar across the electrode layer, and the fourth bus bar is provided with the insulating pad between the fourth bus bar and the electrode layer.

9. The series-parallel perovskite photovoltaic cell of claim 8, wherein, The series-parallel type perovskite photovoltaic cell further comprises a protective cover and a sealing glue, the protective cover and the transparent substrate are oppositely arranged, the sealing glue is arranged between the protective cover and the transparent substrate, the protective cover, the sealing glue and the transparent substrate form a sealed cavity, and the transparent conductive layer, the first carrier transport layer, the perovskite layer, the second carrier transport layer and the electrode layer are located in the sealed cavity. One end of the first bus bar extends through the sealing glue, the fourth bus bar is provided with a lead-out portion, and the lead-out portion extends through the sealing glue.

10. An electronic device, comprising: The series-parallel type perovskite photovoltaic cell and the electronic device are electrically connected.

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