Mobile phone shell with pluggable perovskite solar cell

Abstract

The utility model relates to a mobile phone shell with a pluggable perovskite solar cell, which comprises a back plate, a frame body is arranged on the periphery of the back plate along the outer edge, and the back plate and the frame body are connected to form a cavity for accommodating a mobile phone; the solar cell module further comprises a pluggable perovskite solar cell part, the pluggable perovskite solar cell part comprises a U-shaped plugging piece and a perovskite solar module connected with the U-shaped plugging piece, and a notch matched with the U-shaped plugging piece in structure is formed in the position, located on the upper surface, of the top of the frame body. A first perovskite solar cell and a charging part connected with the first perovskite solar cell are arranged on the outer surface of the back plate, and the first perovskite solar cell is connected with the perovskite solar module in series or in parallel. According to the utility model, the weight and the size of the mobile phone are not increased, the portability of the mobile phone is not lost, only solar energy needs to be effectively utilized to complement energy for the mobile phone, and the problems that the mobile phone is not light and the use scene is limited are solved.

Description

Technical Field

[0001] This utility model belongs to the field of mobile phone case technology, specifically relating to a mobile phone case with a pluggable perovskite solar cell. Background Art

[0002] Currently, mobile phones have become an indispensable part of people's lives. They are no longer limited to simple communication functions, but also have functions such as handling various work documents and entertainment applications. This places higher demands on mobile phone batteries. Due to the need for lightweight design, mobile phones often cannot have large-capacity batteries or energy storage components, resulting in short standby time and difficulty in meeting the needs of continuous use for a long period of time.

[0003] Most existing phone cases and other phone accessories only serve a protective or decorative purpose, with limited functionality. However, a growing number of phone users have higher expectations for these accessories, demanding more practical features. For example, users hope that phone cases can charge their phones for extended periods of continuous use.

[0004] To address this problem, researchers have combined phone cases with perovskite solar cells for charging phones. Specifically, a layer of perovskite solar cells is placed on the outer surface of the phone case, and a battery is installed on the phone case. Due to the small size of the phone case, the perovskite solar cell area is small, resulting in low charging efficiency. In addition, the addition of a battery increases the weight and size of the phone case, which does not meet the requirements of portability, long battery life, and natural charging.

[0005] In view of this, the inventors provide a mobile phone case with a pluggable perovskite solar cell to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a mobile phone case with a pluggable perovskite solar cell. A first perovskite solar cell is provided on the back panel of the mobile phone case. The frame and the pluggable perovskite solar cell are plugged in and out to lock or unlock them. The pluggable perovskite solar cell includes a U-shaped plug and a perovskite solar module. When the U-shaped plug is unlocked from the frame, the U-shaped plug is pulled out and the perovskite solar module is removed to expand the light-absorbing area, allowing the mobile phone case to charge the phone using solar energy.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] This utility model provides a mobile phone case with a pluggable perovskite solar cell, including a back plate, and a frame is provided around the back plate and along the outer edge. The back plate and the frame are connected to form a cavity for accommodating the mobile phone.

[0009] It also includes a pluggable perovskite solar cell section, which includes a U-shaped plug and a perovskite solar module connected to the U-shaped plug. The top of the frame has a notch on its upper surface that is adapted to the structure of the U-shaped plug. The notch is used to lock or unlock the U-shaped plug to the frame. When the U-shaped plug is locked to the frame, the perovskite solar module is located on the inner surface of the back plate. When the U-shaped plug is unlocked from the frame, the light-absorbing area can be expanded by pulling out the U-shaped plug and taking out the perovskite solar module.

[0010] The outer surface of the backplate is provided with a first perovskite solar cell and a charging part connected to the first perovskite solar cell. The first perovskite solar cell is connected in series or in parallel with the perovskite solar module.

[0011] Furthermore, the height of the frame is greater than or equal to the combined thickness of the mobile phone and the perovskite solar module;

[0012] The perovskite solar module includes a second perovskite solar cell and a base plate. The second perovskite solar cell is disposed on the base plate, and the base plate is connected to a U-shaped plug. The first perovskite solar cell and the second perovskite solar cell are connected in series or in parallel.

[0013] Furthermore, the thickness of the pluggable perovskite solar cell is less than 0.6 mm, and the thickness of the second perovskite solar cell is less than 0.3 mm, which constitutes a thin-film solar cell.

[0014] Furthermore, the second perovskite solar cell is a bifacial flexible perovskite solar cell. A first lens hole is provided on the back plate, and a second lens hole is provided on the bottom plate at the same position as the first lens hole. The size of the second lens hole is greater than or equal to the size of the first lens hole, and the structure of the second perovskite solar cell is the same as the structure of the bottom plate.

[0015] Furthermore, the second perovskite solar cell is a foldable flexible perovskite solar cell. A first lens hole is provided on the back plate, and a third lens hole is provided on the bottom plate at the same position as the first lens hole. The size of the third lens hole is greater than or equal to the size of the first lens hole, and the second perovskite solar cell is located below the third lens hole.

[0016] Furthermore, a conductor is provided at the connection between the frame and the back plate and along the length of the frame. Both terminals of the first perovskite solar cell are connected to the conductor, and both terminals of the second perovskite solar cell are in sliding contact with the conductor, so as to realize the first perovskite solar cell and the second perovskite solar cell in series or in parallel.

[0017] The outer surface of the conductor is provided with an insulating structure.

[0018] Furthermore, the charging unit is a wired charging unit or a wireless charging unit, specifically:

[0019] If a wired charging method is used to charge the mobile phone, the charging unit is a wired charging unit. For example, the wired charging unit may include: an electrode connection part and a charging connector connected to the electrode connection part. The electrode connection part is connected to the cathode and anode electrodes of the first perovskite solar cell, and the charging connector is adapted to the charging interface of the mobile phone. The electrode connection part transmits the electrical energy converted by the first perovskite solar cell and / or the second perovskite solar cell to the mobile phone battery and its circuitry through the charging connector for charging the mobile phone.

[0020] The electrode connection part is flexibly connected to the first perovskite solar cell, which is used for flipping and easy storage; and the wiring between the electrode connection part and the charging connector is flexibly set to shrink and reduce space for easy plugging and unplugging; the back plate, frame and U-shaped plug can all be made of metal materials, which can play a better protective role.

[0021] If a wireless charging method is used to charge a mobile phone, the charging unit is a wireless charging unit, and the wireless charging unit is connected to the cathode and anode electrodes of the first perovskite solar cell. For example, the wireless charging unit includes: a wireless transmitting coil disposed on a back panel, the wireless transmitting coil being matched with a wireless receiving coil disposed inside the mobile phone; the back panel is also provided with a rectifier circuit and an inverter circuit matched with the wireless charging unit, the rectifier circuit outputs stable DC power, the inverter circuit converts the DC power into high-frequency AC power, and then through the resonant strong magnetic coupling of the wireless transmitting coil and the wireless receiving coil, a high-frequency AC power is formed on the wireless receiving coil of the mobile phone, and then converted into DC power by the high-frequency rectifier circuit of the wireless charging circuit inside the mobile phone to charge the battery inside the mobile phone.

[0022] Furthermore, the upper surface of the frame is provided with a sliding slot, a groove, and a block at the notch. The sliding slot and the groove are symmetrically arranged along the width direction of the frame. The groove is located near the top of the U-shaped plug-in relative to the sliding slot, and the block is located at the top of the frame.

[0023] The bottom of the U-shaped plug-in component is provided with elastic protrusions that match the number and structure of the sliding slots and sliding posts that match the number and structure of the sliding slots. The elastic protrusions cooperate with the sliding slots to lock the U-shaped plug-in component to the frame or unlock and disassemble it. The U-shaped plug-in component is also provided with a fixing groove for inserting the card block.

[0024] Furthermore, the upper surface of the frame is provided with multiple lower magnet mounting slots at the notch, and the multiple lower magnet mounting slots are evenly distributed on both sides of the card block. The bottom of the U-shaped plug-in component is provided with an upper magnet mounting slot that corresponds one-to-one with the lower magnet mounting slot. A magnet is provided between each lower magnet mounting slot and the upper magnet mounting slot.

[0025] Furthermore, the first perovskite solar cell and the second perovskite solar cell have the same layer structure, and the layer structure of the first perovskite solar cell includes:

[0026] A transparent conductive layer, an electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer are sequentially stacked on a first glass substrate.

[0027] Alternatively, a transparent conductive layer, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer may be sequentially stacked on a first glass substrate.

[0028] The layer structure of the second perovskite solar cell includes:

[0029] A transparent conductive layer, an electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer are sequentially stacked on the front side of the second glass substrate; and a semi-transparent conductive layer, an electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer are sequentially stacked on the back side of the second glass substrate.

[0030] Alternatively, the second perovskite solar cell may include a transparent conductive layer, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer sequentially stacked on the front side of the second glass substrate; and a semi-transparent conductive layer, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer sequentially stacked on the back side of the second glass substrate.

[0031] Furthermore, both the first and second glass substrates are optionally transparent and flexible, and the transparent conductive layer includes, but is not limited to, at least one of titanium oxide (TiO2), zinc oxide (ZnO), and vanadium oxide (V2O5) for collecting mobile free electrons.

[0032] The electron transport layer includes at least one of TiO2, SnO2, and methylfullerene (PCBM);

[0033] The perovskite layer includes, but is not limited to, at least one of lead methylamine iodide (CH3NH3PbI3), lead methylamine bromide (CH3NH3PbBr3), lead cesium chloride (CsPbCl3), lead bromide (CsPbBr3), lead chlorobromide (CsPbBrxCl3-x), and lead sulfide (PbS).

[0034] The hole transport layer comprises, but is not limited to, at least one of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA), NiOx, and Spiro-OMeTAD;

[0035] The metal electrode layer includes, but is not limited to, at least one of gold, aluminum, silver, and copper, and is used to collect moving free holes;

[0036] In addition, the layer structure of the first or second perovskite solar cell further includes at least one of a first passivation layer, a second passivation layer, and an outer protective layer. Optionally, the first passivation layer comprises, but is not limited to, at least one of the following: cystamine dihydrochloride (CMDR), L-aspartic acid (LAA), histidine, poly-4-vinylpyridine (P4VP), ethylenediamine dihydroiodide (EDAI2), and hexamethylene diisocyanate (HDI); the second passivation layer comprises, but is not limited to, at least one of tetrabutylammonium chloride (TBAC), hexadecyltrimethylammonium hexafluorophosphate (HTAP), inorganic potassium fluoride (KF), and trimethylsulfonium bromide (TMSBr); and the outer protective layer comprises, but is not limited to, plastic.

[0037] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0038] 1) This utility model provides a mobile phone case with a pluggable perovskite solar cell. A first perovskite solar cell is installed on the back panel of the phone case. A frame and a pluggable perovskite solar cell are connected and disconnected, allowing for locking or unlocking. The pluggable perovskite solar cell includes a U-shaped plug and a perovskite solar module. When the U-shaped plug is unlocked from the frame, the perovskite solar module can be removed by pulling out the U-shaped plug to expand the light-absorbing area. This solves problems such as difficulty in charging the phone in certain scenarios and low power output due to a small light-absorbing area of ​​the solar cell. The pluggable perovskite solar cell of this utility model not only facilitates the storage of the perovskite solar module, but also addresses these issues. Furthermore, it can expand the light absorption area of ​​the perovskite solar cell and improve the charging power, which is a significant improvement for mobile phone cases. When the mobile phone circuit is connected to the charging part of the mobile phone case of this utility model, it will form a current loop with the first and second perovskite solar cells, thereby realizing photoelectric conversion and supplying electrical energy to the mobile phone battery. This structural design can meet the needs of long-term continuous use without increasing the energy density of the battery. It does not increase the weight and size of the mobile phone, nor does it lose the portability of the mobile phone. It only needs to effectively utilize solar energy to replenish the mobile phone, solving the problems of mobile phones being not lightweight and limited in usage scenarios, and meeting the user's need for convenient use of mobile phones in natural environments.

[0039] 2) The present invention provides a mobile phone case with pluggable perovskite solar cells, which is provided with a first perovskite solar cell and a second perovskite solar cell. Both are flexible structures with the characteristics of flexibility, lightness and plasticity. The manufacturing process is simple and suitable for large-scale application. Attached Figure Description

[0040] The accompanying drawings are incorporated in and form part of this specification, and together with the description, serve to explain the principles of this invention.

[0041] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the mobile phone case structure of the pluggable perovskite solar cell of this utility model.

[0043] Figure 2 This is a schematic diagram of the structure of the mobile phone case after the U-shaped plug is removed in embodiments 1, 2, and 3 of this utility model;

[0044] Figure 3This is a schematic diagram of the pluggable perovskite solar cell section of Embodiment 1 of this utility model;

[0045] Figure 4 This is a schematic diagram of the U-shaped plug-in part of the mobile phone case for the pluggable perovskite solar cell of this utility model.

[0046] Figure 5 This is a schematic diagram of the back structure of a mobile phone case for the pluggable perovskite solar cell of this utility model.

[0047] Figure 6 This is a schematic diagram of the pluggable perovskite solar cell section of Embodiment 3 of this utility model;

[0048] Figure 7 for Figure 6 A cross-sectional view along BB;

[0049] Figure 8 This is an unfolded view of the second perovskite solar cell of the pluggable perovskite solar cell section in Embodiment 3 of this utility model.

[0050] Figure 9 This is a schematic diagram of the structure of the mobile phone case after the U-shaped plug is removed in Embodiment 4 of this utility model.

[0051] Wherein: 1 is the back plate; 2 is the frame; 3 is the pluggable perovskite solar cell section; 4 is the charging section; 11 is the first lens hole; 20 is the notch; 21 is the sliding slot; 22 is the sliding groove; 23 is the locking block; 31 is the U-shaped plug-in component; 32 is the perovskite solar module; 41 is the charging connector; 211 is the first slot; 212 is the second slot; 311 is the elastic protrusion; 312 is the sliding post; 321 is the base plate; 3211-1 is the second lens hole; 3211-2 is the third lens hole. DETAILED DESCRIPTION

[0052] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0053] In the description of this utility model, terms such as "upper", "lower", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing this utility model, not to require that this utility model be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] Example 1

[0055] Please see Figures 1-5 This invention provides a mobile phone case with a pluggable perovskite solar cell, including a back plate 1. A frame 2 is provided around the back plate 1 and along its outer edge. The back plate 1 and the frame 2 are connected to form a cavity for accommodating the mobile phone. Specifically, in this embodiment, the back plate 1 and the frame 2 are connected and fixed by heat-resistant adhesive.

[0056] It also includes a pluggable perovskite solar cell section 3, which includes a U-shaped plug 31 and a perovskite solar module 32 connected to the U-shaped plug 31. The top of the frame 2 has a notch 20 on its upper surface that is adapted to the structure of the U-shaped plug 31. The notch 20 is used to lock the U-shaped plug 31 to the frame 2 or to unlock and remove it. When the U-shaped plug 31 is locked to the frame 2, the perovskite solar module 32 is located on the inner surface of the back plate 1. When the U-shaped plug 31 is unlocked from the frame 2, the light absorption area can be expanded by pulling out the U-shaped plug 31 and taking out the perovskite solar module 32.

[0057] The outer surface of the backplate 1 is provided with a first perovskite solar cell and a charging unit 4 connected to the first perovskite solar cell. The first perovskite solar cell is connected in series or in parallel with the perovskite solar module 32. Specifically, the first perovskite solar cell can be fixed to the outer surface of the backplate 1 with hot melt adhesive to form an integral part.

[0058] Furthermore, the height of the frame 2 is greater than or equal to the combined thickness of the mobile phone and the perovskite solar module 32; for example... Figure 3 As shown, the perovskite solar module 32 includes a second perovskite solar cell and a base plate 321. The second perovskite solar cell is disposed on the base plate 321, and the base plate 321 is connected to the inner bottom of the U-shaped plug-in member 31. The first perovskite solar cell and the second perovskite solar cell are connected in series or in parallel.

[0059] Specifically, the base plate 321 and the inner bottom of the U-shaped plug-in component 31 are connected by hot melt adhesive. The adhesive is not limited to hot melt adhesive; any adhesive that can fix the two together is acceptable.

[0060] In this embodiment, the thickness of the pluggable perovskite solar cell 3 is 0.6 mm, and the thickness of the second perovskite solar cell is 0.3 mm.

[0061] like Figure 2 , 3As shown, the second perovskite solar cell is a bifacial flexible perovskite solar cell. The back plate 1 has a first lens hole 11. The bottom plate 321 has a second lens hole 3211-1 in the same position as the first lens hole 11, and the size of the second lens hole 3211-1 is greater than or equal to the size of the first lens hole 11. The structure of the second perovskite solar cell is the same as the structure of the bottom plate 321.

[0062] In this embodiment, after the U-shaped plug-in 31 is unlocked from the frame 2, the double-sided flexible perovskite solar cell is pulled out by pulling out the U-shaped plug-in 31 to expand the light absorption area, thereby improving the light absorption area and power generation efficiency of the solar cell.

[0063] Furthermore, in this embodiment, the first lens hole 11 is formed with a protrusion (not shown in the figure) protruding outward in the circumferential direction. The height of the protrusion is higher than the height of the lens, which protects the mobile phone lens from friction damage and also enhances the aesthetics of the mobile phone lens.

[0064] Furthermore, a conductor (not shown in the figure) is symmetrically arranged at the connection between the frame 2 and the back plate 1 along the length direction of the frame 2. Both terminals of the first perovskite solar cell are connected to the conductor, and both terminals of the second perovskite solar cell are in sliding contact with the conductor, so as to realize the first perovskite solar cell and the second perovskite solar cell in series or in parallel.

[0065] The outer surface of the conductor is provided with an insulating structure. Specifically, the outer surface of the conductor, except for the part that contacts the two terminals of the second perovskite solar cell, is covered with a layer of insulating material, such as polyvinyl chloride (PVC) from polymer materials.

[0066] In this embodiment, both terminals of the second perovskite solar cell are arranged along the width direction of the second perovskite solar cell and are symmetrically located at the bottom of both sides of the second perovskite solar cell. The second perovskite solar cell is removed by pulling out the U-shaped plug 31, so that the bottom two terminals of the second perovskite solar cell are always in contact with the conductor. While ensuring that the maximum area of ​​the second perovskite solar cell is exposed to the outside, it can also be connected in series or in parallel with the electrodes of the first perovskite solar cell.

[0067] like Figure 5As shown, the charging unit 4 is a wired charging unit. Specifically, it uses a wired charging method to charge the mobile phone. For example, the wired charging unit may include an electrode connection part and a charging connector 41 connected to the electrode connection part. The electrode connection part is connected to the cathode and anode electrodes of the first perovskite solar cell, and the charging connector 41 is adapted to the charging interface of the mobile phone. The electrode connection part transmits the electrical energy converted by the first perovskite solar cell and / or the second perovskite solar cell to the mobile phone battery and its circuitry through the charging connector 41 for charging the mobile phone.

[0068] The electrode connection is flexibly connected to the first perovskite solar cell, allowing for easy flipping and storage. The wiring between the electrode connection and the charging connector 41 is elastically designed (e.g., using spring wire, coiled wire, or winding wire, which is not limited here), allowing for easy insertion and removal by reducing space. The back plate, frame, and U-shaped plug can all be made of metal materials, which can provide better protection.

[0069] like Figure 2 As shown, the upper surface of the frame 2 is provided with a sliding slot 21, a groove 22 and a block 23 at the notch 20. The sliding slot 21 and the groove 22 are symmetrically arranged along the width direction of the frame 2. The groove 22 is located near the top of the U-shaped plug-in member 31 relative to the sliding slot 21. The block 23 is located at the top of the frame 2.

[0070] like Figure 4 As shown, the bottom of the U-shaped plug-in component 31 is provided with elastic protrusions 311 that match the number and structure of the sliding slots 21, and sliding posts 312 that match the number and structure of the sliding grooves 22. Through the cooperation of the sliding grooves 22 and the sliding posts 312, the U-shaped plug-in component 31 can slide and be pulled apart relative to the frame 2, and can also ensure that it will not be misaligned during assembly, making assembly simpler and more convenient. The elastic protrusions 311 cooperate with the sliding slots 21 to lock the U-shaped plug-in component 31 to the frame 2 or unlock and disassemble it. The U-shaped plug-in component 31 is also provided with a fixing groove for the insertion of the card block 23.

[0071] Specifically, in this embodiment, the card block 23 has an L-shaped structure and is protrudingly disposed on the side wall end face of the frame 2. A fixing groove is formed on the circumferential inner side wall of the U-shaped plug-in 31 to cooperate with the card block 23. After the card block 23 is inserted into the fixing groove, it functions to fix the mobile phone and restrict the movement of the U-shaped plug-in 31.

[0072] Specifically, in this embodiment, the sliding slot 21 includes a first slot 211 and a second slot 212 communicating with the first slot 211, and the elastic protrusion 311 is an L-shaped locking arm. When the L-shaped locking arm is engaged in the first slot 211, the U-shaped plug-in 31 is locked to the frame 2. When a slight outward or inward external force is applied to make the elastic protrusion 311 pop out and be located in the second slot 212, the U-shaped plug-in 31 is unlocked from the frame 2, and thus can be disassembled.

[0073] Furthermore, in this embodiment, the frame 2 may also have a button mounting slot provided according to the specific structure of the mobile phone, and a button is provided in the button mounting slot; an anti-slip sheet (not shown in the figure) is provided on the outer peripheral wall of the frame 2. Specifically, vertical grooves are symmetrically provided on the frame 2 along its length direction, and the anti-slip sheet can be fixed in the vertical groove by adhesive (not limited here). The anti-slip sheet serves the functions of anti-slip and decoration.

[0074] Furthermore, the first perovskite solar cell includes a transparent electrode layer, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer sequentially stacked on a first glass substrate.

[0075] Furthermore, the second perovskite solar cell includes a transparent electrode layer, an electron transport layer, a perovskite layer, a hole transport layer, a metal electrode layer, a first passivation layer, a second passivation layer, and an outer protective layer sequentially stacked on the front side of the second glass substrate; and a semi-transparent electrode layer, an electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer sequentially stacked on the back side of the second glass substrate.

[0076] In this embodiment, both the first glass substrate and the second glass substrate are transparent and flexible.

[0077] Optionally, the transparent conductive layer includes, but is not limited to, at least one of titanium oxide (TiO2), zinc oxide (ZnO), and vanadium oxide (V2O5) for collecting mobile free electrons;

[0078] The electron transport layer includes at least one of TiO2, SnO2, and methylfullerene (PCBM);

[0079] The perovskite layer includes, but is not limited to, at least one of lead methylamine iodide (CH3NH3PbI3), lead methylamine bromide (CH3NH3PbBr3), lead cesium chloride (CsPbCl3), lead bromide (CsPbBr3), lead chlorobromide (CsPbBrxCl3-x), and lead sulfide (PbS).

[0080] The hole transport layer comprises, but is not limited to, at least one of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA), NiOx, and Spiro-OMeTAD;

[0081] The metal electrode layer includes, but is not limited to, at least one of gold, aluminum, silver, and copper, and is used to collect moving free holes.

[0082] Specifically, the preparation process of the first perovskite layer in this embodiment is as follows:

[0083] Step 1: Vacuum-deposit a 100nm thick layer of titanium oxide on the first glass substrate to form a transparent conductive layer, which is the anode;

[0084] Step 2: Spin-coat a 50nm thick layer of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) onto the transparent conductive layer as a hole transport layer.

[0085] Step 3: Spin-coat the precursor solution onto the hole transport layer at a speed of 3000 rpm for 30 seconds. After spin-coating, anneal the hole transport layer on a hot plate at 100°C for 10 minutes to form a perovskite film, i.e., the perovskite layer.

[0086] In this process, lead methylamine iodide (CH3NH3PbI3) was dissolved in a mixed solution of dimethyl sulfoxide (DMSO) and γ-butyrolactone (GBL) to prepare a precursor solution with a concentration of 1.5 M.

[0087] Step 4: Spin-coat a 200 nm thick layer of methylfullerene (PCBM) onto the perovskite film to form an electron transport layer;

[0088] Step 5: Vacuum-deposit a 100nm thick aluminum layer on the electron transport layer to form a metal electrode layer, which is the cathode;

[0089] Step 6: Test the photoelectric performance of the perovskite solar cell prepared above, including open-circuit voltage, short-circuit current, fill factor, and photoelectric conversion efficiency. Then, test the mechanical properties of the cell, including bending strength, folding angle, and cutting accuracy. Next, test the environmental adaptability of the cell, including high temperature, low temperature, high humidity, and ultraviolet aging. Finally, cut and encapsulate the perovskite solar cell that meets the test standards to form the first perovskite solar cell.

[0090] Among them, methyl fullerene is methyl [6,6]-phenyl C61 butyrate (PCBM), which has higher solubility in organic solvents than fullerene (C60). Moreover, PCBM is an N-type semiconductor with high electron mobility, making it the preferred electron transport material.

[0091] It should be noted that the shape and size of the phone case can be adapted and prepared according to different phone models. When the phone case provided in this embodiment is installed on the phone, the phone case can not only protect the phone, but also, when the phone circuit is connected to the solar cell connected to the charging unit, the solar cell will form a current loop with the phone circuit to realize photoelectric conversion and then supply electrical energy to the phone battery. This also gives the phone case a more practical function in addition to protecting the phone and decoration.

[0092] Example 2

[0093] The difference between this embodiment and Embodiment 1 is as follows:

[0094] 1) Charging unit 4 is a wireless charging unit. Specifically, it uses wireless charging to charge the mobile phone. This charging unit is a wireless charging unit and is connected to the cathode and anode electrodes of the first perovskite solar cell. For example, the wireless charging unit includes: a wireless transmitting coil disposed on the back plate 1, which is matched with the wireless receiving coil disposed in the mobile phone; the back plate is also provided with a rectifier circuit and an inverter circuit that match the wireless charging unit. The rectifier circuit outputs stable DC power, and the inverter circuit converts the DC power into high-frequency AC power. Then, through the resonant strong magnetic coupling between the wireless transmitting coil and the wireless receiving coil, a high-frequency AC power is formed on the wireless receiving coil of the mobile phone. Then, through the high-frequency rectifier circuit of the wireless charging circuit inside the mobile phone, it is converted into DC power to charge the battery inside the mobile phone.

[0095] 2) The layer structure of the first perovskite solar cell includes: a transparent conductive layer, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer sequentially stacked on a first glass substrate.

[0096] 3) The layer structure of the second perovskite solar cell includes: the second perovskite solar cell includes a transparent conductive layer, a hole transport layer, a perovskite layer, an electron transport layer and a metal electrode layer sequentially stacked on the front side of the second glass substrate; and a semi-transparent conductive layer, a hole transport layer, a perovskite layer, an electron transport layer and a metal electrode layer sequentially stacked on the back side of the second glass substrate.

[0097] Example 3

[0098] The difference between this embodiment and Embodiment 1 is that, as Figure 6 , Figure 7As shown, in this embodiment, the second perovskite solar cell is a foldable flexible perovskite solar cell (folding method as shown). Figure 7 As shown, the back plate 1 has a first lens hole 11, and the bottom plate 321 has a third lens hole 3211-2 in the same position as the first lens hole 11. The size of the third lens hole 3211-2 is greater than or equal to the size of the first lens hole 11. The second perovskite solar cell is located below the third lens hole 3211-2, and the layer structure of the second perovskite solar cell is the same as the layer structure of the first perovskite solar cell in Embodiment 1.

[0099] In this embodiment, after unlocking the U-shaped plug 31 from the frame 2, the foldable flexible perovskite solar cell is unfolded by pulling out the U-shaped plug 31. Figure 8 As shown, the bottom two terminals of the second perovskite solar cell are always in contact with the conductor. This ensures that the second perovskite solar cell has the maximum exposed area while also allowing it to be connected in series or parallel with the electrodes of the first perovskite solar cell. After use, the flexible perovskite solar cell is folded and placed on the back plate 1, below the third lens hole 3211-2. Then, the flexible perovskite solar cell and the base plate 321 are placed on the back plate 1, and the U-shaped plug-in 31 is connected and fixed to the frame 2, thus completing one charging of the mobile phone.

[0100] It should be noted that the length of the foldable flexible perovskite solar cell is not limited and can be designed as needed. When the length of the flexible perovskite solar cell is designed to be very long, the folded flexible perovskite solar cell will have a certain thickness, and the height of the corresponding frame 2 needs to be adjusted adaptively according to the conditions defined in Example 1.

[0101] Example 4

[0102] This embodiment is based on embodiment 1, such as... Figure 9 As shown, this embodiment also provides that multiple lower magnet mounting slots are provided on the upper surface of the frame 2 at the notch 20, and the multiple lower magnet mounting slots are evenly distributed on both sides of the card block 23. The bottom of the U-shaped plug-in 31 is provided with an upper magnet mounting slot (not shown in the figure) that corresponds one-to-one with the lower magnet mounting slots. A magnet is provided between each lower magnet mounting slot and the upper magnet mounting slot.

[0103] Preferably, there are two lower magnet mounting slots, which are evenly distributed on both sides of the card block 23. When the magnets in the upper and lower magnet mounting slots attract each other, they are used to fix the position of the U-shaped plug 31 and the frame 2, so that the two are firmly connected and the mobile phone will not slip.

[0104] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model.

[0105] It should be understood that this utility model is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A mobile phone case with a pluggable perovskite solar cell, characterized in that, Includes a back panel (1), and a frame (2) is provided around the back panel (1) and along its outer edge. The back panel (1) and the frame (2) are connected to form a cavity for accommodating a mobile phone. It also includes a pluggable perovskite solar cell section (3), which includes a U-shaped pluggable part (31) and a perovskite solar module (32) connected to the U-shaped pluggable part (31). The top of the frame (2) has a notch (20) on its upper surface that is adapted to the structure of the U-shaped pluggable part (31). The notch (20) is used to lock the U-shaped pluggable part (31) to the frame (2) or unlock and disassemble it. When the U-shaped pluggable part (31) is locked to the frame (2), the perovskite solar module (32) is located on the inner surface of the back plate (1). When the U-shaped pluggable part (31) is unlocked from the frame (2), the light absorption area can be expanded by pulling out the U-shaped pluggable part (31) and taking out the perovskite solar module (32). The outer surface of the backplate (1) is provided with a first perovskite solar cell and a charging part (4) connected to the first perovskite solar cell. The first perovskite solar cell is connected in series or in parallel with the perovskite solar module (32).

2. The mobile phone case with a pluggable perovskite solar cell according to claim 1, characterized in that, The perovskite solar module (32) includes a second perovskite solar cell and a base plate (321). The second perovskite solar cell is disposed on the base plate (321), and the base plate (321) is connected to a U-shaped plug (31). The first perovskite solar cell and the second perovskite solar cell are connected in series or in parallel.

3. The mobile phone case with a pluggable perovskite solar cell according to claim 2, characterized in that, The second perovskite solar cell is a bifacial flexible perovskite solar cell. A first lens hole (11) is provided on the back plate (1), and a second lens hole (3211-1) is provided on the bottom plate (321) at the same position as the first lens hole (11). The size of the second lens hole (3211-1) is greater than or equal to the size of the first lens hole (11). The structure of the second perovskite solar cell is the same as the structure of the bottom plate (321).

4. The mobile phone case with a pluggable perovskite solar cell according to claim 2, characterized in that, The second perovskite solar cell is a foldable flexible perovskite solar cell. A first lens hole (11) is provided on the back plate (1), and a third lens hole (3211-2) is provided on the bottom plate (321) at the same position as the first lens hole (11). The size of the third lens hole (3211-2) is greater than or equal to the size of the first lens hole (11). The second perovskite solar cell is located below the third lens hole (3211-2).

5. The mobile phone case with a pluggable perovskite solar cell according to claim 2, characterized in that, A conductor is provided at the connection between the frame (2) and the back plate (1) and along the length of the frame (2). Both terminals of the first perovskite solar cell are connected to the conductor, and both terminals of the second perovskite solar cell are in sliding contact with the conductor, so as to realize the first perovskite solar cell and the second perovskite solar cell in series or in parallel. The outer surface of the conductor is provided with an insulating structure.

6. The mobile phone case with a pluggable perovskite solar cell according to claim 1, characterized in that, The charging unit (4) is either a wired charging unit or a wireless charging unit.

7. The mobile phone case with a pluggable perovskite solar cell according to claim 1, characterized in that, The upper surface of the frame (2) is provided with a sliding slot (21), a groove (22) and a block (23) at the notch (20). The sliding slot (21) and the groove (22) are symmetrically arranged along the width direction of the frame (2). The groove (22) is located near the top of the U-shaped plug-in (31) relative to the sliding slot (21). The block (23) is located at the top of the frame (2). The bottom of the U-shaped plug-in component (31) is provided with an elastic protrusion (311) that matches the number and structure of the sliding slot (21) and a sliding post (312) that matches the number and structure of the sliding groove (22). The elastic protrusion (311) cooperates with the sliding slot (21) to lock the U-shaped plug-in component (31) to the frame (2) or unlock and disassemble it. The U-shaped plug-in component (31) is also provided with a fixing groove for inserting the card block (23).

8. The mobile phone case with a pluggable perovskite solar cell according to claim 7, characterized in that, The upper surface of the frame (2) is provided with multiple lower magnet mounting slots at the notch (20). The multiple lower magnet mounting slots are evenly distributed on both sides of the card block (23). The bottom of the U-shaped plug-in (31) is provided with an upper magnet mounting slot that corresponds to the lower magnet mounting slot. A magnet is provided between each lower magnet mounting slot and the upper magnet mounting slot.

9. The mobile phone case with a pluggable perovskite solar cell according to claim 3, characterized in that, The layer structure of the second perovskite solar cell includes: A transparent conductive layer, an electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer are sequentially stacked on the front side of the second glass substrate; and a semi-transparent conductive layer, an electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer are sequentially stacked on the back side of the second glass substrate. Alternatively, the second perovskite solar cell may include a transparent conductive layer, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer sequentially stacked on the front side of the second glass substrate; and a semi-transparent conductive layer, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer sequentially stacked on the back side of the second glass substrate.

10. The mobile phone case with a pluggable perovskite solar cell according to claim 4, characterized in that, The first perovskite solar cell and the second perovskite solar cell have the same layer structure. The layer structure of the first perovskite solar cell includes: A transparent conductive layer, an electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer are sequentially stacked on a first glass substrate. Alternatively, a transparent conductive layer, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer may be sequentially stacked on a first glass substrate.

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