Laminated solar cell and laminated solar cell module

Abstract

The utility model relates to the technical field of solar cells, and particularly provides a laminated solar cell and a photovoltaic cell assembly. A perovskite cell unit; and the first adhesive layer is used for detachably connecting the crystalline silicon cell unit and the perovskite cell unit together. According to the laminated solar cell, the replacement cost of the perovskite cell part in the laminated solar cell is obviously reduced, and the replacement efficiency is also improved. By replacing the waste perovskite battery in time, not only is product upgrading realized, but also user experience is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cells, and specifically provides a laminated solar cell and a laminated solar cell assembly. Background Art

[0002] As ecological protection is increasingly valued, the development and utilization of new energy sources are also being actively explored. Among them, photovoltaic power generation technology has attracted much attention due to its unique advantages and is expected to occupy an important position in the future energy structure.

[0003] At present, the efficiency of crystalline silicon cells has reached a bottleneck, while perovskite cells have low costs, can form stacked cells, and have higher ultimate efficiency. They are developing rapidly and have huge room for improvement. Due to current technical limitations, the life of perovskite cells is much shorter than that of crystalline silicon cells. If perovskite cells can be replaced without replacing crystalline silicon cells, the performance of perovskites can be more fully utilized.

[0004] Because the stability and life of perovskite cells are much shorter than those of crystalline silicon cells, when the life of perovskite cells reaches its limit or the perovskite decomposes due to environmental factors, the perovskite cells will no longer generate electricity normally, and the perovskite film layer will reduce the degree of light received by the crystalline silicon cells and reduce the power generation efficiency of the crystalline silicon cells. Moreover, perovskite cells contain heavy metals, which will cause environmental pollution and cause greater damage if they are not recycled properly.

[0005] It is necessary to develop a tandem solar cell structure that can effectively replace and recycle perovskite cells. Summary of the invention

[0006] In order to overcome the above-mentioned defects, the utility model provides a stacked solar cell and photovoltaic cell assembly, which can efficiently and conveniently replace or remove the perovskite cell when problems occur.

[0007] In a first aspect, the utility model provides a tandem solar cell, comprising:

[0008] Crystalline silicon battery cells;

[0009] Perovskite cells; and

[0010] The first adhesive layer is used to detachably connect the crystalline silicon battery unit and the perovskite battery unit together.

[0011] Furthermore, the first adhesive layer is a heat-sensitive adhesive layer.

[0012] Furthermore, the perovskite battery cell comprises:

[0013] Perovskite batteries;

[0014] A second adhesive layer and a first light-transmitting protective layer are sequentially stacked on a surface of the perovskite cell away from the crystalline silicon cell unit, wherein the debonding temperature of the second adhesive layer is higher than the debonding temperature of the first adhesive layer.

[0015] Furthermore, the perovskite battery unit also includes an anti-reflection and anti-transmission film layer, which is arranged between the second adhesive layer and the perovskite battery.

[0016] Furthermore, the perovskite battery cell also includes an encapsulation layer disposed between the second adhesive layer and the perovskite battery.

[0017] Furthermore, the perovskite battery comprises:

[0018] A flexible substrate, a first electrode, a first transmission layer, a perovskite light absorption layer, a second transmission layer and a second electrode are sequentially stacked in a direction away from the crystalline silicon battery unit.

[0019] Furthermore, the side surfaces of the first electrode and the second electrode are plated with an Ag material layer, and the Ag material layer includes an Ag pad.

[0020] Furthermore, the crystalline silicon battery unit comprises:

[0021] Crystalline silicon battery;

[0022] A third adhesive layer and a second light-transmitting protective layer are sequentially stacked on a surface of the crystalline silicon cell facing the first adhesive layer, wherein a debonding temperature of the third adhesive layer is higher than a debonding temperature of the first adhesive layer.

[0023] Furthermore, the crystalline silicon cell comprises:

[0024] Crystalline silicon battery body;

[0025] A third electrode and a fourth electrode are arranged on opposite sides of the crystalline silicon cell body.

[0026] Furthermore, the side surfaces of the third electrode and the fourth electrode are plated with an Ag material layer, and the Ag material layer includes an Ag pad.

[0027] Furthermore, the perovskite cell and the crystalline silicon cell are connected in series or in parallel via the Ag pad.

[0028] In a second aspect, the utility model provides a laminated solar cell assembly, comprising:

[0029] The tandem solar cell according to the first aspect;

[0030] A packaging body having an opening, wherein the packaging body forms a receiving space, and the stacked solar cell is received in the receiving space through the opening;

[0031] The third light-transmitting protective layer covers the opening.

[0032] Furthermore, the accommodating space is filled with a desiccant.

[0033] The above one or more technical solutions of the utility model have at least one or more of the following beneficial effects:

[0034] After the service life of the perovskite cell unit ends, the utility model removes the perovskite cell unit from the crystalline silicon cell unit and replaces it with a new perovskite cell unit or recycles it. Installing a new perovskite cell on the crystalline silicon cell unit can effectively ensure that the stacked solar cell maintains a stable efficiency for a long time until the crystalline silicon cell reaches its service life.

[0035] When the first adhesive layer is a heat-sensitive adhesive layer, the heat-sensitive adhesive layer is rendered ineffective by heating the entire laminated solar cell, so that the perovskite cell can be removed from the crystalline silicon cell.

[0036] The utility model not only significantly reduces the replacement cost of the perovskite cell part of the tandem solar cell, but also improves the replacement efficiency. By timely replacing the waste perovskite cells, not only the product upgrade is achieved, but also the user experience is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In addition, similar numbers in the drawings are used to represent similar components, among which:

[0038] Figure 1 is a schematic cross-sectional view of the main structure of a tandem solar cell according to an embodiment of the utility model;

[0039] Figure 2 This is a schematic diagram of the main structure of a perovskite battery and a crystalline silicon battery connected in series according to an embodiment of the utility model;

[0040] Figure 3 This is a schematic diagram of the main structure of a perovskite battery and a crystalline silicon battery connected in parallel according to an embodiment of the utility model;

[0041] Figure 4 It is a schematic diagram of the main structure according to an embodiment of the utility model with a desiccant added.

[0042] Reference numerals list :

[0043] 1 crystalline silicon battery cell, 2 perovskite battery cell, 2-1 second adhesive layer, 2-2 first light-transmitting protective layer, 2-4 packaging layer, 2-5 flexible substrate, 2-6 first electrode, 2-7 first transmission layer, 2-8 perovskite light-absorbing layer, 2-9 second transmission layer, 2-10 second electrode, 3 first adhesive layer, 4-1 first Ag pad, 4-2 second Ag pad, 4-3 third Ag pad, 4-4 fourth Ag pad, 4-5 fifth Ag pad, 4-6 sixth Ag pad, 4-7 seventh Ag pad, 5 third light-transmitting protective layer, 6 packaging body, 7 desiccant. DETAILED DESCRIPTION

[0044] Some embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0045] Reference Figure 1 The utility model provides a laminated solar cell, comprising:

[0046] Crystalline silicon battery unit 1;

[0047] Perovskite battery cell 2; and

[0048] The first adhesive layer 3 is used to detachably connect the crystalline silicon battery unit 1 and the perovskite battery unit 2 together.

[0049] After the service life of the perovskite cell 2 ends, the perovskite cell 2 is removed from the crystalline silicon cell 1 and replaced with a new perovskite cell or recycled. Installing a new perovskite cell on the crystalline silicon cell can effectively ensure that the stacked cell maintains a stable efficiency for a long time until the crystalline silicon cell reaches the end of its service life.

[0050] In one embodiment, the first adhesive layer 3 is composed of a heat-sensitive adhesive, and the heat-sensitive adhesive is selected from a pyrolytic adhesive that exhibits different viscosities within different temperature ranges. Specifically, the pyrolytic adhesive is inactivated above a certain temperature and can maintain good viscosity below a certain temperature, such as polyurethane adhesive or polyethylene adhesive.

[0051] In one embodiment, the selected thermosensitive adhesive can maintain good viscosity within 150 degrees Celsius and is used to fix the crystalline silicon battery cell 1 and the perovskite battery cell 2. When the temperature is higher than 150 degrees Celsius, the thermosensitive adhesive loses its viscosity and denatures and becomes inactivated. At this time, the crystalline silicon battery cell 1 and the perovskite battery cell 2 can be efficiently and conveniently separated.

[0052] The utility model aims at the problem of poor stability and life of perovskite cells. After the service life of the perovskite cell ends, the heat-sensitive adhesive layer is inactivated by heating the entire laminated solar cell. In this way, the perovskite cell unit 2 can be easily and quickly removed from the crystalline silicon cell unit 1.

[0053] The utility model not only significantly reduces the replacement cost of the perovskite cell part of the tandem solar cell, but also improves the replacement efficiency. By timely replacing the waste perovskite cells, not only the product upgrade is achieved, but also the user experience is significantly improved.

[0054] Reference Figure 2 , Figure 3 In one embodiment, the perovskite battery unit 2 comprises:

[0055] Perovskite batteries;

[0056] A second adhesive layer 2-1 and a first light-transmitting protective layer 2-2 are sequentially stacked on the surface of the perovskite cell away from the crystalline silicon cell unit 1, wherein the debonding temperature of the second adhesive layer 2-1 is higher than the debonding temperature of the first adhesive layer 3.

[0057] The first light-transmitting protective layer 2-2 is used for light transmission and providing a certain mechanical strength for the perovskite cell.

[0058] In one embodiment, the first light-transmitting protective layer 2 - 2 is made of glass. In order to obtain better light transmittance, the glass is preferably ultra-thin glass with a thickness of less than 0.5 mm.

[0059] In one embodiment, the second adhesive layer 2-1 is made of a high temperature resistant adhesive, which is used to bond the first light-transmitting protective layer 2-2 and the perovskite battery, and has a certain packaging effect to isolate the perovskite from contact with external gas.

[0060] The second adhesive layer 2-1 not only has the above-mentioned bonding and packaging functions but also needs to be able to withstand high temperatures. The debonding temperature of the second adhesive layer 2-1 is higher than the debonding temperature of the first adhesive layer 3. For example, if a thermosensitive adhesive loses its viscosity at a temperature higher than 150 degrees Celsius, the second adhesive layer 2-1 will remain unchanged and maintain its viscosity for a long time at 200°C. In this way, when the perovskite battery no longer generates electricity normally and needs to be replaced or removed, the stacked solar cell is heated, and the first adhesive layer 3 is inactivated at the heating temperature and loses its viscosity, so that the perovskite battery unit 2 and the crystalline silicon battery unit 1 are separated. At the same time, since the debonding temperature of the second adhesive layer 2-1 is higher than that of the first adhesive layer 3, when the perovskite battery unit 2 is separated from the crystalline silicon battery unit 1, the first light-transmitting protective layer 2-2 is not separated from the perovskite battery, and finally the overall dismantling is achieved without the appearance of scattered parts, the dismantling efficiency is higher, and the recycling is more convenient.

[0061] In one embodiment, the second adhesive layer 2 - 1 can be made of silicone epoxy resin, such as modified epoxy resin used for LED packaging.

[0062] The perovskite battery unit 2 further includes an anti-reflection and anti-reflection film layer 2-3, which is disposed between the second adhesive layer 2-1 and the perovskite battery to increase the transmittance of light while reducing reflection.

[0063] In one embodiment, the anti-reflection and anti-reflection film layer 2-3 is made of MgF2 material.

[0064] In one embodiment, the perovskite battery unit 2 further includes an encapsulation layer 2-4, which is disposed between the second adhesive layer 2-1 and the perovskite battery and is used to encapsulate the perovskite battery to isolate water and oxygen.

[0065] In one embodiment, the encapsulation layers 2-4 are thin film encapsulation layers, wherein the thin film used for encapsulation is Al2O3 and TiO materials deposited by ALD equipment.

[0066] The relative positions of the anti-reflection film layer 2-3 and the encapsulation layer 2-4 between the second adhesive layer 2-1 and the perovskite cell are not limited. Specifically, the anti-reflection film layer 2-3 can be arranged close to the second adhesive layer 2-1 or close to the perovskite cell. Correspondingly, the encapsulation layer 2-4 can be arranged close to the perovskite cell or close to the second adhesive layer 2-1.

[0067] In one embodiment, the perovskite battery comprises:

[0068] A flexible substrate 2-5, a first electrode 2-6, a first transmission layer 2-7, a perovskite light absorption layer 2-8, a second transmission layer 2-9 and a second electrode 2-10 are sequentially stacked in a direction away from the crystalline silicon battery unit 1.

[0069] The substrate of the perovskite cell is a flexible substrate, which can be deformed to a certain extent. The crystalline silicon cell is installed on a surface with a certain curvature, which can be better combined with the crystalline silicon cell unit 1. When the perovskite cell is prepared, the electrode is sputtered on the flexible substrate 2-5. The flexible substrate achieves soft contact with the crystalline silicon cell unit 1.

[0070] In one embodiment, the stacked solar cell is illuminated from above, the cathode is located above the anode, the first electrode 2-6 is the anode, the first transport layer 2-7 is the hole transport layer, the second transport layer 2-9 is the electron transport layer, and the second electrode 2-10 is the cathode.

[0071] In one embodiment, the anode material is ITO indium tin oxide, which is a translucent material;

[0072] The hole transport layer is composed of a hole transport material HTL;

[0073] The perovskite light absorbing layer 2-8 is a perovskite main body, including an interface material and a passivation material.

[0074] The electron transport layer materials are C60 and SnO, C60 is deposited by evaporation, and SnO is deposited by atomic layer deposition equipment ALD equipment;

[0075] The cathode is composed of IZO indium zinc oxide, which is deposited on the flexible substrate 2-5 using a magnetron sputtering device.

[0076] In one embodiment, the sides of the first electrode 2-6 and the second electrode 2-10 are coated with an Ag material layer, and the Ag material layer includes an Ag pad, which is a protruding structure provided on the side of the electrode part for connecting to a wire, thereby improving the contact yield and increasing conductivity.

[0077] In one embodiment, the crystalline silicon battery unit 1 comprises:

[0078] Crystalline silicon battery;

[0079] A third adhesive layer 1 - 1 and a second light-transmitting protective layer 1 - 2 are sequentially stacked on the surface of the crystalline silicon cell facing the first adhesive layer 3 , wherein the debonding temperature of the third adhesive layer 1 - 1 is higher than the debonding temperature of the first adhesive layer 3 .

[0080] The second light-transmitting protective layer 1 - 2 is used for transmitting light and protecting the crystalline silicon cell, and at the same time separates the crystalline silicon cell from the perovskite cell unit 2 .

[0081] The third adhesive layer 1-1 plays a bonding role, fixing the second light-transmitting protective layer 1-2 on the crystalline silicon cell. When the thermosensitive adhesive is decomposed by heat, due to the isolation effect of the second light-transmitting protective layer 1-2, the thermosensitive adhesive after pyrolysis will not damage the surface of the crystalline silicon cell. Since the crystalline silicon cell needs to continue to be used, this avoids damage to the crystalline silicon cell.

[0082] In one embodiment, the third adhesive layer 1-1 is made of a high temperature resistant adhesive. The third adhesive layer 1-1 plays a certain packaging buffering role and can withstand high temperatures, such as maintaining stability and viscosity for a long time below 200°C. When the thermosensitive adhesive selected for the first adhesive layer 3 loses its viscosity at a temperature higher than 150 degrees Celsius, the third adhesive layer 1-1 remains unchanged and maintains viscosity for a long time at 200 degrees Celsius. In this way, when the perovskite cell no longer generates electricity normally and needs to be replaced or removed, the stacked solar cell is heated, and the first adhesive layer 3 is inactivated at the heating temperature and loses its viscosity, so that the perovskite cell unit 2 and the crystalline silicon cell unit 1 are separated. At the same time, since the debonding temperature of the third adhesive layer 1-1 is higher than that of the first adhesive layer 3, when the perovskite cell unit 2 is separated from the crystalline silicon cell unit 1, the second light-transmitting protective layer 1-2 is still bonded to the surface of the crystalline silicon cell unit 1 by the third adhesive layer 1-1, thereby protecting the crystalline silicon cell and isolating the inactivated first adhesive layer 3, thereby preventing the crystalline silicon cell from being damaged and affecting its subsequent continued use.

[0083] In one embodiment, the high temperature resistant adhesive of the third adhesive layer 1 - 1 may be selected as silicone epoxy resin, such as modified epoxy resin used for LED packaging.

[0084] In one embodiment, the second light-transmitting protective layer 1-2 is made of glass. In order to obtain better light transmittance, ultra-thin glass with a thickness of less than 0.5 mm is preferably selected. When the laminated solar cell is heated and separated as a whole, the glass layer can better protect the crystalline silicon battery unit 1 from damage and make the separation more complete and thorough.

[0085] The utility model enables lossless separation of the perovskite cell and the crystalline silicon cell, and after the separation, a new perovskite cell can be remounted on the crystalline silicon cell.

[0086] The crystalline silicon cell comprises:

[0087] Crystalline silicon battery body 1-3;

[0088] The third electrode 1-4 and the fourth electrode 1-5 are arranged on opposite sides of the crystalline silicon cell body 1-3.

[0089] In one embodiment, the sides of the third electrode 1-4 and the fourth electrode 1-5 are coated with an Ag material layer, and the Ag material layer includes an Ag pad, which is a protruding structure provided on the side of the electrode part for connecting to a wire, thereby improving the contact yield and increasing conductivity.

[0090] In one embodiment, the light of the stacked solar cell is irradiated from above, the third electrode 1-4 is located above the fourth electrode 1-5, the third electrode 1-4 is a cathode, and the fourth electrode 1-5 is an anode.

[0091] In one embodiment, the perovskite cell and the crystalline silicon cell are connected in series or in parallel via the Ag pad.

[0092] Reference Figure 2 , describing the structure of the perovskite cell and the crystalline silicon cell connected in series.

[0093] The anode of the perovskite cell is connected to the cathode of the crystalline silicon cell through a first wire.

[0094] When high current is required in an application environment, a series structure of perovskite cells and crystalline silicon cells can be selected.

[0095] Reference Figure 3 , illustrating the structure of the perovskite cell and the crystalline silicon cell connected in parallel.

[0096] The cathode of the perovskite cell is connected to the cathode of the crystalline silicon cell via a second wire;

[0097] The anode of the perovskite cell is connected to the anode of the crystalline silicon cell through a third wire.

[0098] When a high voltage application environment is required, a parallel structure of titanium ore battery and crystalline silicon battery units can be selected.

[0099] Figure 2 and Figure 3 In the crystalline silicon cell, the cathode is located at the top and the anode is located at the bottom.

[0100] The first to third wires can fix the perovskite battery unit 2 and the crystalline silicon battery unit 1 to a certain extent, ensuring that the two do not shift. The first to third wires are usually aluminum wires.

[0101] In the series structure, the cathode of the perovskite battery is connected to the first negative electrode interface through the first Ag pad 4-1, the anode of the perovskite battery is connected to one end of the first wire through the second Ag pad 4-2, the other end of the first wire is connected to the cathode of the crystalline silicon battery through the third Ag pad 4-3, and the anode of the crystalline silicon battery is connected to the first positive electrode interface through the fourth Ag pad 4-4.

[0102] In the parallel structure, the cathode of the perovskite battery is connected to one end of the second wire through the fifth Ag pad 4-5, the other end of the second wire is connected to the cathode of the crystalline silicon battery through the sixth Ag pad 4-6, and the second wire is also connected to a second negative electrode interface; the anode of the perovskite battery is connected to one end of the third wire through the seventh Ag pad 4-7, the other end of the third wire is connected to the anode of the crystalline silicon battery through the eighth Ag pad 4-8, and the third wire is also connected to a second positive electrode interface.

[0103] Reference Figure 4 The utility model also provides a laminated solar cell assembly, comprising:

[0104] The stacked solar cell;

[0105] A packaging body 6 having an opening, wherein the packaging body forms a receiving space, and the laminated solar cell is received in the receiving space through the opening;

[0106] The third light-transmitting protective layer 5 covers the opening.

[0107] The third light-transmitting protective layer 5 is used to protect the safety of the battery below and has high transmittance.

[0108] In one embodiment, the third light-transmitting protective layer 5 is a cover glass, preferably made of tempered glass.

[0109] In one embodiment, the third light-transmitting protective layer 5 is detachably mounted on the packaging body 6 , making it easier to maintain.

[0110] In order to ensure the replaceability of perovskite in this embodiment, the outer packaging of the product can be disassembled so that individual batteries can be replaced and repaired.

[0111] When the utility model assembles the crystalline silicon battery unit 1 and the perovskite battery unit 2, the first adhesive layer 3 is evenly coated on the surface of the crystalline silicon battery unit 1, and the complete perovskite battery unit 2 is sucked up with a suction cup, and the crystalline silicon battery unit 1 below is aligned for mounting, and the mounting is cured after completion.

[0112] When the product is maintained, the entire stacked battery is moved to a heating table and heated at 150°C. The resin at the first adhesive layer 3 is denatured and loses its viscosity, making it easy to completely remove the upper perovskite battery unit 2 and attach a new perovskite battery unit 2;

[0113] Because the third light-transmitting protective layer 5 needs to be removed during maintenance, the external packaging measures will fail at this time, so complete packaging measures are required for both the crystalline silicon cell and the perovskite cell.

[0114] In one embodiment, still referring to Figure 4The accommodating space is filled with a desiccant 7, which is used to absorb moisture and oxygen in the battery to ensure that the interior of the laminated battery is in a dry and oxygen-free environment.

[0115] In one embodiment, the desiccant 7 mainly comprises sodium polyacrylate and anhydrous calcium chloride, and the deoxidizer mainly comprises iron oxide and ferric oxide, which can be replaced when the perovskite patch battery is replaced to ensure efficient drying and deoxidation effects.

[0116] The desiccant added to the battery packaging structure of the utility model can be replaced synchronously when the perovskite battery is replaced, so as to ensure dryness and oxygen-free inside the battery.

[0117] In one embodiment, the bottom surface of the packaging body 6 is also covered with a covering buffer foam to ensure that the battery disposed in the accommodation space is not damaged during installation and transportation.

[0118] The laminated solar cell designed by the utility model can effectively guarantee the overall working efficiency of the cell and can maintain stable performance before the crystalline silicon cell reaches the scrap standard. Once the perovskite cell or crystalline silicon cell fails, its service life can be extended through timely maintenance measures.

[0119] In addition, an effective recycling plan can be implemented for perovskite batteries, which not only helps reduce the pollution impact of the material on the environment, but also reflects the rational use of resources. Although the life of perovskite batteries is relatively short, with the continuous advancement of scientific research and technology, its power generation efficiency is gradually improving, its life is gradually extending, and its cost is steadily decreasing. When replacing the perovskite components in calcium silicon batteries, you can choose more advanced perovskite batteries with higher power generation efficiency, greater stability, longer life and lower cost. This marks the upgrading of products and brings users a better user experience.

[0120] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A tandem solar cell, characterized in that: include: Crystalline silicon battery cells; Perovskite battery cells; as well as The first adhesive layer is used to detachably connect the crystalline silicon battery unit and the perovskite battery unit together.

2. The solar cell according to claim 1, characterized in that: The first adhesive layer is a heat-sensitive adhesive layer.

3. The battery according to claim 1, characterized in that: The perovskite battery cell comprises: Perovskite batteries; A second adhesive layer and a first light-transmitting protective layer are sequentially stacked on a surface of the perovskite cell away from the crystalline silicon cell unit, wherein the debonding temperature of the second adhesive layer is higher than the debonding temperature of the first adhesive layer.

4. The battery according to claim 3, characterized in that: The perovskite battery unit further includes an anti-reflection and anti-reflection film layer, which is arranged between the second adhesive layer and the perovskite battery.

5. The battery according to claim 3 or 4, characterized in that: The perovskite cell unit further includes an encapsulation layer disposed between the second adhesive layer and the perovskite cell.

6. The battery according to claim 3, characterized in that: The perovskite battery comprises: A flexible substrate, a first electrode, a first transmission layer, a perovskite light absorption layer, a second transmission layer and a second electrode are sequentially stacked in a direction away from the crystalline silicon battery unit.

7. The battery according to claim 6, characterized in that Side surfaces of the first electrode and the second electrode are plated with an Ag material layer, and the Ag material layer includes an Ag pad.

8. The battery according to claim 1, characterized in that: The crystalline silicon battery unit comprises: Crystalline silicon battery; A third adhesive layer and a second light-transmitting protective layer are sequentially stacked on a surface of the crystalline silicon cell facing the first adhesive layer, wherein a debonding temperature of the third adhesive layer is higher than a debonding temperature of the first adhesive layer.

9. The battery according to claim 8, characterized in that: The crystalline silicon cell comprises: Crystalline silicon battery body; A third electrode and a fourth electrode are arranged on opposite sides of the crystalline silicon cell body.

10. The battery according to claim 9, characterized in that Side surfaces of the third electrode and the fourth electrode are plated with an Ag material layer, and the Ag material layer includes an Ag pad.

11. The battery according to claim 7 or 10, characterized in that: The perovskite cell and the crystalline silicon cell are connected in series or in parallel via the Ag pad.

12. A laminated solar cell module, characterized in that: include: The tandem solar cell according to any one of claims 1 to 11; A packaging body having an opening, wherein the packaging body forms a receiving space, and the stacked solar cell is received in the receiving space through the opening; The third light-transmitting protective layer covers the opening.

13. The assembly according to claim 12, characterized in that The containing space is filled with a desiccant.

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