Mobile phone shell with scroll type perovskite solar cell part

Abstract

The utility model belongs to the technical field of mobile phone shells, and relates to a mobile phone shell with a scroll type perovskite solar cell part, which comprises a shell body, a cavity used for accommodating a mobile phone is arranged on the front surface of the shell body, and the scroll type perovskite solar cell part is further mounted on the shell body. The perovskite solar cell piece at the back of the shell body of the mobile phone shell can be pulled outwards, and the extension length of the perovskite solar cell piece can be controlled in cooperation with the rolling stopping mechanism, so that the light absorption area of the perovskite solar cell piece is expanded; and the problems of difficult mobile phone charging in some scenes, small application area of the solar cell, low power and the like are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mobile phone cases, and relates to a mobile phone case with a scroll-type perovskite solar cell part. Background Art

[0002] At present, smart phones have become an indispensable part of people's lives. With the high-intensity demand for mobile phones, the battery life of mobile phones has also become an important indicator. However, in some special situations (such as outdoors), when the mobile phone runs out of power and there is no place to charge it, it will bring great trouble to people. And it is quite inconvenient to carry devices such as power banks and charging cables at all times in daily life. In order to charge the mobile phone more conveniently, the transformation of mobile phone cases has become one of the research directions of people. Some technologies have gradually emerged in the market, in which a battery is embedded inside the mobile phone case to make it have the function of a power bank, so as to charge the mobile phone. However, since an important feature that the mobile phone case itself should have is being thin and light, the power bank-type mobile phone case is generally large, bulky, and has a very small charging capacity. Before each use, the mobile phone case needs to be charged separately, which is time-consuming, laborious and lacks practicality. Moreover, the existing mobile phones and their accessories are small in volume, making it difficult to implement a large-area solar component. The small surface area limits the charging efficiency and it is difficult to meet the actual demand for charging its host mobile phone.

[0003] Although the existing Chinese patent document (publication number: CN102856944A, publication date: January 2, 2013) discloses a solar cell charging device combined with a mobile phone, which is hidden inside the mobile phone case. As long as there is light, the solar cell sheet is drawn out to receive light, and then the mobile phone battery can be charged. And on the outer side of the mobile phone case at the position of the rotating shaft, there is a limit shaft sleeve that can move laterally and limit the movement of the rotating shaft: on the one hand, it can prevent the unfolded battery sheet from automatically retracting into the mobile phone case body, and on the other hand, it also ensures that when the limit shaft is accidentally scratched, the battery sheet will not automatically unfold. However, for the charging device disclosed in the above patent document, since the groove for accommodating the solar cell roll is provided on the mobile phone case body, the depth of the groove is necessarily limited by the thickness of the mobile phone case body, resulting in a limited length of the solar cell roll that can be accommodated, thereby affecting the light absorption area of the solar cell sheet and reducing the power generation power of the solar cell sheet.

[0004] In view of this, the present utility model is specifically proposed. Summary of the Utility Model

[0005] The purpose of the present utility model is to overcome the above-mentioned disadvantages of the prior art, and provide a mobile phone case with a scroll-type perovskite solar cell part, which solves the problems of difficult mobile phone charging and low power generation power in some special scenarios by expanding the light absorption area of the perovskite solar cell sheet.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The mobile phone case with a roll-up perovskite solar cell unit comprises a shell, a front side of the shell is provided with a cavity for accommodating a mobile phone, and the shell is also provided with a receiving seat for installing the roll-up perovskite solar cell unit;

[0008] The roll-up perovskite solar cell unit is installed in the receiving cavity of the receiving seat, and cooperates with the cover to realize the installation and fixation of the roll-up perovskite solar cell unit in the receiving cavity;

[0009] The roll-up perovskite solar cell unit comprises a hollow roll with a return spring, a perovskite solar cell sheet is wound on the hollow roll, and the perovskite solar cell sheet can be automatically rolled back onto the hollow roll after charging is completed;

[0010] The accommodating seat is provided with a first notch for facilitating the extension of the perovskite solar cell. The accommodating seat is also provided with a stop-roll mechanism for controlling the extension length of the perovskite solar cell. The perovskite solar cell is also provided with a charging unit.

[0011] Furthermore, the accommodating seat is located on the back side of the shell and is arranged along the width direction of the shell; or, the accommodating seat is installed on the shell and is away from the end of the mobile phone charging port.

[0012] Furthermore, the wired charging unit or the wireless charging unit is specifically:

[0013] If the mobile phone is charged by wired charging, the charging unit is a wired charging unit. For example, the wired charging unit may include: an electrode connector located at the end of the perovskite solar cell, and a charging connector elastically connected to the electrode connector, the charging connector is adapted to the charging interface of the mobile phone, and the electrode connector transmits the electric energy converted by the perovskite solar cell to the mobile phone battery and its circuit through the charging connector, so as to charge the mobile phone.

[0014] Among them, the electrode connector is flexibly electrically connected to the perovskite solar cell for flipping and convenient storage; the line elasticity between the electrode connector and the connector is used to shrink and reduce space for convenient plugging and unplugging; the materials of the shell, the receiving seat, and the receiving cavity include but are not limited to thermoplastic polyurethane elastomer rubber, polyurethane or polycarbonate composite materials.

[0015] If the mobile phone is charged by wireless charging, the charging part is a wireless charging part, and the wireless charging part is electrically connected to the positive and negative electrodes of the perovskite solar cell. For example, the wireless charging part includes: a wireless transmitting coil disposed in the housing, and the wireless transmitting coil is matched with a wireless receiving coil disposed in the mobile phone; a rectifying circuit and an inverting circuit matched with the wireless charging part are further disposed in the housing of the mobile phone case. The rectifying circuit is used to output stable direct current, and then the inverting circuit converts the direct current into high-frequency alternating current. Then, through the resonant strong magnetic coupling of the wireless transmitting coil and the wireless receiving coil, a high-frequency alternating current is formed on the wireless receiving coil of the mobile phone, and then it is converted into direct current through the high-frequency rectifying circuit of the internal wireless charging circuit of the mobile phone to charge the storage battery in the mobile phone.

[0016] Further, a pulling piece is provided at the end of the perovskite solar cell, and the perovskite solar cell can be conveniently pulled out through the pulling piece to expand the light absorption area.

[0017] Further, the hollow scroll is sleeved on the fixed rod, and the two are coaxial; one end of the return spring is fixed on the hollow scroll, and the other end is fixed on the fixed rod; the inner end of the perovskite solar cell is fixed on the hollow scroll, and the rest of the perovskite solar cells are wound on the hollow scroll, and the outer end of the perovskite solar cell can extend out along the first notch.

[0018] Further, the cover is provided with a limiting hole for limiting the end of the fixed rod, and the two ends of the fixed rod are respectively clamped in the limiting holes.

[0019] Further, a second notch is formed on the outer surface of the receiving seat, and the stop winding mechanism is installed at the second notch.

[0020] Further, the stop winding mechanism includes a stop winder, and the stop winder is installed at the second notch through a damping hinge. By pressing / open the stop winder, the extension length of the perovskite solar cell can be stopped / loosened and wound back.

[0021] Further, one end of the stop winder is provided with an opening part for facilitating its opening.

[0022] Further, the width of the perovskite solar cell is not greater than the width of the housing, and the diameter of the perovskite solar cell after being wound on the hollow scroll is not greater than the inner diameter of the receiving cavity; the width of the first notch is slightly greater than the width of the perovskite solar cell.

[0023] Further, the perovskite solar cell, that is, the perovskite solar flexible thin film, has a thickness of less than 0.1 mm, and is stored and extended in a scroll manner. When extended, the light absorption area of the perovskite solar cell can be expanded.

[0024] Further, the layer structure of the perovskite solar cell includes:

[0025] A transparent conductive glass, an electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer stacked in sequence from bottom to top; or,

[0026] A transparent conductive glass, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer stacked in sequence from bottom to top; wherein,

[0027] The thickness of the electron transport layer is 20 nm to 50 nm, the thickness of the perovskite layer is 200 nm to 800 nm, the thickness of the hole transport layer is 50 nm to 200 nm, and the thickness of the metal electrode layer is 80 nm to 150 nm.

[0028] Further, the transparent conductive glass must be a flexible glass. For example, a bendable glass with a thickness of 0.03 mm to 2 mm can be used. For example, the thickness of the flexible glass produced by flexible glass manufacturers represented by Corning is about 0.1 mm, and there is a layer of laminated polymer plastic on the outside, which can make the glass bend without breaking. With the development and progress of science and technology, ultra-thin flexible glasses or transparent substrate materials with a thickness less than 0.03 mm will be widely produced in the future. These materials have good flexibility and a thickness closer to that of plastic films, and will become a better choice for transparent conductive glasses.

[0029] Optionally, the layer structure of the perovskite solar thin film at least includes a perovskite layer (light absorption layer), an electron transport layer, and a hole transport layer. Preferably, the layer structure of the perovskite solar thin film includes a perovskite layer (light absorption layer), an electron transport layer, a hole transport layer, and cathode and anode electrode layers:

[0030] The light absorption layer includes, but is not limited to: at least one of lead methylammonium iodide (CH3NH3PbI3), lead methylammonium bromide (CH3NH3PbBr3), cesium lead chloride (CsPbCl3), cesium lead bromide (CsPbBr3), cesium lead bromide chloride (CsPbBrxCl 3-x ), lead sulfide (PbS);

[0031] The electron transport layer includes, but is not limited to: at least one of TiO2, SnO2, and methyl fullerenes (PCBM);

[0032] The hole transport layer includes, 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;

[0033] The cathode is a transparent conductive oxide electrode for collecting moving free electrons, including but not limited to at least one of titanium oxide (TiO2), zinc oxide (ZnO), and vanadium oxide (V2O5);

[0034] The anode is a metal electrode for collecting moving free holes, including but not limited to at least one of gold, aluminum, silver, and copper.

[0035] In addition, the layer structure of the perovskite solar thin film further has at least one of a first passivation layer, a second passivation layer, and an outer protective layer. Specifically, the first passivation layer includes but is not limited to at least one of cystamine dihydrochloride (CMDR) with double amino groups, amino acid L-aspartic acid (LAA), histidine, poly-4-vinylpyridine (P4VP), ethylenediamine dihydroiodide (EDAI2), and hexamethylene diisocyanate (HDI); the second passivation layer includes but is not limited to at least one of tetrabutylammonium chloride (TBAC), hexadecyltrimethylammonium hexafluorophosphate (HTAP), inorganic potassium fluoride (KF), and trimethylsulfonium bromide (TMSBr); the outer protective layer includes but is not limited to plastics.

[0036] Compared with the prior art, the technical solution provided by the present utility model has the following beneficial effects:

[0037] 1) For this mobile phone case with a scroll-type perovskite solar cell part, by installing a scroll-type perovskite solar cell part on the case (the back of the case or the end of the case away from the mobile phone charging port), when the user is in a special scenario such as outdoors where it is inconvenient to charge, the perovskite solar cell sheet installed on the case can be pulled outwards and the extension length of the perovskite solar cell sheet can be controlled in cooperation with the anti-unrolling mechanism, so as to expand the light absorption area of the perovskite solar cell sheet, and thus solve the problems of difficult mobile phone charging in some scenarios, small application area and low power of the solar cell sheet, etc.

[0038] 2) The scroll-type perovskite solar cell part of the mobile phone case uses perovskite solar cell sheets. Compared with traditional solar cell sheets, perovskite solar cell sheets have the advantages of light weight, extremely thin thickness, bendability, flexibility, and simple manufacturing process, and are suitable for being made on mobile phone cases. When the internal circuit of the mobile phone is connected to the electrode connection body of the solar cell connected to the charging connector of the mobile phone case, a current loop will be formed in the perovskite solar cell part, thereby realizing the conversion of light energy into electrical energy and supplying the electrical energy to the mobile phone and its battery, so that the mobile phone case has a more practical function in addition to protecting the mobile phone and decoration.

[0039] 3) By setting up a rollable perovskite solar cell part, the functions of solar power generation or power storage are utilized, which neither increases the weight and volume of the mobile phone itself nor loses the portability of the mobile phone, effectively utilizes solar energy to generate electricity or supplement energy for the mobile phone, and solves problems such as limited usage scenarios of the mobile phone.

[0040] In summary, the mobile phone case with a rollable perovskite solar cell part provided by the present utility model not only realizes the roll-up storage of perovskite solar cells, but also expands the light absorption area of perovskite solar cells, improves the area and charging power of perovskite solar cells, and further improves the practical functions of the mobile phone case. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings here are incorporated into the description and form a part of this description, and are used together with the description to explain the principles of the present utility model.

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0043] Figure 1 Structural diagram of a mobile phone case (wired charging part) with a rollable perovskite solar cell provided by the present utility model;

[0044] Figure 2 For Figure 1 Top view;

[0045] Figure 3 For Figure 2 Cross-sectional view in the F-F direction;

[0046] Figure 4 Structural diagram of the rollable perovskite solar cell part in the present utility model;

[0047] Figure 5 Structural diagram of another mobile phone case (wireless charging part) with a rollable perovskite solar cell provided in Embodiment 2 of the present utility model;

[0048] Figure 6 Structural diagram of a mobile phone case (the receiving seat is located at the end of the housing) with a rollable perovskite solar cell provided in Embodiment 3 of the present utility model.

[0049] Wherein: 1. Housing; 2. Receiving seat; 3. Receiving cavity; 4. Fixed rod; 5. Return spring; 6. Hollow reel; 7. Perovskite solar cell; 8. First notch; 9. Cover; 10. Limit hole; 11. Pull tab; 12. Electrode connector; 13. Charging connector; 14. Second notch; 15. Damping hinge; 16. Anti-reel device. Specific embodiments

[0050] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. On the contrary, they are only examples consistent with some aspects of the present invention detailed in the appended claims.

[0051] In the description of the present invention, the orientation or positional relationship terms such as "upper", "lower", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present invention.

[0052] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the drawings and embodiments.

[0053] Embodiment 1

[0054] See Figures 1 to 4 As shown, this embodiment provides a mobile phone case with a reel-type perovskite solar cell part, including a housing 1. A cavity for accommodating the mobile phone is provided on the front surface of the housing 1, and a receiving seat 2 for installing the reel-type perovskite solar cell part is further provided on the housing 1;

[0055] The receiving seat 2 is located on the back surface of the housing 1 and is arranged along the width direction of the housing 1. The reel-type perovskite solar cell part is installed in the receiving cavity 3 of the receiving seat 2 and is cooperated with the cover to realize the installation and fixation of the reel-type perovskite solar cell part in the receiving cavity 3;

[0056] The reel-type perovskite solar cell part includes a hollow reel 6 with a return spring 5. A perovskite solar cell 7 is wound on the hollow reel 6, and after charging is completed, the perovskite solar cell 7 can be automatically retracted onto the hollow reel 6;

[0057] The accommodating seat 2 is provided with a first notch 8 facilitating the protrusion of the perovskite solar cell 7, and the accommodating seat 2 is further equipped with a roll-stopping mechanism for controlling the protruding length of the perovskite solar cell 7. A charging part is also provided on the perovskite solar cell 7.

[0058] In some exemplary embodiments, the scroll-type perovskite solar cell part protrudes from the back of the housing 1, which can avoid the entry of dust, impurities, etc. into the mobile phone. The user only needs to clean the mobile phone case regularly, which is beneficial to the maintenance of the mobile phone itself. It should be noted, however, that the scroll-type perovskite solar cell part is not necessarily only arranged to protrude from the back of the housing 1; it can also be adaptively adjusted and designed according to parameters such as the model and thickness of different mobile phone cases and in combination with the charging requirements of different mobile phone models for the installation method of the scroll-type perovskite solar cell part on the housing 1.

[0059] In some exemplary embodiments, if the mobile phone is charged by a wired charging method, the charging part is a wired charging part. For example, the wired charging part may include: an electrode connector 12 located at the end of the perovskite solar cell 7, and a charging connector 13 elastically connected to the electrode connector 12. The charging connector 13 is adapted to the charging interface of the mobile phone, and the electrode connector 12 transmits the electric energy converted by the perovskite solar cell 7 to the mobile phone battery and its circuit through the charging connector 13 for charging the mobile phone.

[0060] As a preferred implementation manner of this embodiment, a pulling tab 11 is provided at the end of the perovskite solar cell 7, and the perovskite solar cell 7 can be conveniently pulled out through the pulling tab 11 to expand the light absorption area.

[0061] In some exemplary embodiments, the hollow scroll 6 is sleeved on the fixed rod 4 and they are coaxial; one end of the return spring 5 is fixed on the hollow scroll 6 and the other end is fixed on the fixed rod 4; the inner end of the perovskite solar cell 7 is fixed on the hollow scroll 6, and the rest of the perovskite solar cell is wound around the hollow scroll 6, and the outer end of the perovskite solar cell 7 can protrude along the first notch 8.

[0062] Specifically, a limiting hole 10 for limiting the end of the fixed rod 4 is provided inside the cover 9, and both ends of the fixed rod 4 are respectively clamped in the limiting hole 10.

[0063] As a preferred implementation manner of this embodiment, a second notch 14 is provided on the outer surface of the accommodating seat 2, and the roll-stopping mechanism is installed at the second notch 14.

[0064] Specifically, the roll-stopping mechanism includes a roll stopper 16, which is installed at the second notch 14 through a damping hinge 15. By pressing / open the roll stopper 16, the extension length of the perovskite solar cell 7 can be stopped / loosened and retracted.

[0065] Further, one end of the roll stopper 16 is provided with an opening part for facilitating its opening. Preferably, the opening part is a digging position structure arranged at any position on the outer surface of the roll stopper 16, which is convenient for opening the roll stopper 16.

[0066] Specifically, the width of the perovskite solar cell 7 is not greater than the width of the housing 1, and the diameter of the perovskite solar cell 7 after being wound on the hollow reel 6 is not greater than the inner diameter of the accommodation cavity 3; the width of the first notch 8 is slightly greater than the width of the perovskite solar cell 7.

[0067] As a preferred implementation mode of this embodiment, the perovskite solar cell 7, that is, the perovskite solar flexible thin film, has a thickness of less than 0.1 mm, and is stored and extended by a reel method. When extended, the light absorption area of the perovskite solar cell 7 can be expanded.

[0068] Specifically, the layer structure of the perovskite solar cell 7 includes:

[0069] A transparent conductive glass, an electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer that are sequentially stacked from bottom to top; or,

[0070] A transparent conductive glass, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer that are sequentially stacked from bottom to top; where,

[0071] The thickness of the electron transport layer is 20 nm to 50 nm, the thickness of the perovskite layer is 200 nm to 800 nm, the thickness of the hole transport layer is 50 nm to 200 nm, and the thickness of the metal electrode layer is 80 nm to 150 nm.

[0072] Optionally, the layer structure of the perovskite solar cell includes a perovskite layer (light absorption layer), an electron transport layer, a hole transport layer, and cathode and anode electrode layers. Specifically:

[0073] The light absorption layer includes but is not limited to at least one of methylammonium lead iodide (CH3NH3PbI3), methylammonium lead bromide (CH3NH3PbBr3), cesium lead chloride (CsPbCl3), cesium lead bromide (CsPbBr3), cesium lead bromochloride (CsPbBrxCl 3-x ) and lead sulfide (PbS);

[0074] The electron transport layer includes but is not limited to at least one of TiO2, SnO2, and methyl fullerenes (PCBM);

[0075] The hole transport layer includes 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;

[0076] The cathode is a transparent conductive oxide electrode for collecting mobile free electrons and includes but is not limited to at least one of titanium oxide (TiO2), zinc oxide (ZnO), and vanadium pentoxide (V2O5);

[0077] The anode is a metal electrode for collecting mobile free holes and includes but is not limited to at least one of gold, aluminum, silver, and copper.

[0078] The perovskite solar cell 7 has a small-radius rollable flexible feature for realizing a perovskite solar flexible thin-film battery. Among them, the transparent conductive glass used for the battery substrate must be flexible glass. For example, a bendable glass with a thickness of 0.03 mm to 2 mm can be used. The thickness of the flexible glass currently produced by flexible glass manufacturers represented by Corning is about 0.1 mm, and a layer of laminated polymer plastic is attached on the outside, which can make the glass bend without breaking. With the development and progress of science and technology, ultra-thin flexible glass or transparent substrate materials with a thickness less than 0.03 mm will be widely produced in the future. These materials have good flexibility and a thickness closer to that of a plastic film, and will become a better choice for the substrate of the perovskite solar flexible thin-film battery.

[0079] In addition, the layer structure of the perovskite solar cell 7 also has at least one of a first passivation layer, a second passivation layer, and an outer protective layer. Specifically, the first passivation layer includes but is not limited to at least one of cystamine dihydrochloride (CMDR) with double amino groups, amino acid L-aspartic acid (LAA), histidine, poly-4-vinylpyridine (P4VP), ethylenediamine dihydroiodide (EDAI2), and hexamethylene diisocyanate (HDI); the second passivation layer includes but is not limited to at least one of tetrabutylammonium chloride (TBAC), hexadecyltrimethylammonium hexafluorophosphate (HTAP), inorganic potassium fluoride (KF), and trimethylsulfonium bromide (TMSBr); the outer protective layer includes but is not limited to plastic.

[0080] Specifically, the electrode connector 12 is flexibly electrically connected to the perovskite solar cell 7 for flipping and convenient storage; the line elasticity between the electrode connector 12 and the charging connector 13 is used to shrink and reduce space for convenient plugging and unplugging; the materials of the shell 1, the receiving seat 2, and the receiving cavity 3 include but are not limited to thermoplastic polyurethane elastomer rubber, polyurethane or polycarbonate composite materials.

[0081] It should be noted that the shape, size and shell of the mobile phone case are adaptively adjusted and prepared according to different mobile phone models. When the mobile phone case provided in this embodiment is installed on the mobile phone, the mobile phone case can not only protect the mobile phone, but also generate electricity when the mobile phone case receives sunlight. The electricity is introduced into the mobile phone battery through the perovskite solar cell 7 on the mobile phone case, thereby achieving the purpose of storing electric energy and extending the battery life of the mobile phone. Since the perovskite solar cell is a thin-film solar cell, it can be prepared on a flexible substrate to form a flexible thin-film solar cell. The flexible thin-film solar cell is applied to the mobile phone case, which greatly increases the weight of the mobile phone case. One end of the wired charging part is connected to the positive and negative electrodes of the perovskite solar cell 7 through the electrode connector 12, and the other end is connected to the battery circuit of the mobile phone through the charging connector 13, so that the mobile phone battery is charged by the perovskite solar cell.

[0082] Example 2

[0083] Based on the mobile phone shell structure of Example 1, see Figure 5 As shown, this embodiment also provides a mobile phone case that is charged by wireless charging, wherein the charging part is a wireless charging part, and the wireless charging part is electrically connected to the positive and negative electrodes of the perovskite solar cell sheet 7.

[0084] Specifically, the wireless charging part includes: a wireless transmitting coil arranged in the shell 1, and the wireless transmitting coil matches the wireless receiving coil arranged in the mobile phone; and the shell 1 of the mobile phone shell is also provided with a rectifier circuit and an inverter circuit matching the wireless charging part, and the rectifier circuit is used to output stable direct current, and the direct current is converted into high-frequency alternating current by the inverter circuit, and then the high-frequency alternating current is formed on the wireless receiving coil of the mobile phone through the resonant strong magnetic coupling of the wireless transmitting coil and the wireless receiving coil, and then converted into direct current through the high-frequency rectifier circuit of the wireless charging circuit inside the mobile phone to charge the battery in the mobile phone.

[0085] It should be noted that the wireless charging circuit can be arranged inside the housing 1 together with the wireless transmitting coil, or can be arranged or integrated in the heat dissipation component layer. There is no specific limitation here, as long as the corresponding function can be achieved.

[0086] Example 3

[0087] Based on Embodiment 1, the difference from Embodiment 1 is as follows. Refer to Figure 6 As shown, for the mobile phone case structure provided in this embodiment, the accommodating seat 2 is installed at the end of the housing 1 and away from the mobile phone charging port. The rollable perovskite solar cell unit is still installed in the accommodating cavity 3 of the accommodating seat 2 and cooperates with the cover 9 to achieve the installation and fixation of the rollable perovskite solar cell unit in the accommodating cavity 3.

[0088] It should be noted that the installation method of the accommodating seat 2 at the end of the housing 1 is not specifically limited here. In principle, as long as the fixed installation of the accommodating seat 1 at the end of the housing 1 can be achieved; the rollable perovskite solar cell unit is not only limited to being installed at the end of the housing 1; it can also be adaptively adjusted and designed according to parameters such as the model and thickness of different mobile phone cases and combined with the charging requirements of different mobile phone models for the installation method and installation position of the rollable perovskite solar cell unit on the housing 1.

[0089] The above are only the specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0090] It should be understood that the present invention is not limited to the above-described content and can be variously modified and changed without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A mobile phone case with a scroll-type perovskite solar cell part, comprising a housing (1), wherein a cavity for accommodating a mobile phone is provided on the front surface of the housing (1), and it is characterized in that, The housing (1) is further provided with a receiving seat (2) for installing the roll-type perovskite solar cell part; The roll-type perovskite solar cell part is installed in the receiving cavity (3) of the receiving seat (2) and is cooperated with the cover (9) to realize the installation and fixation of the roll-type perovskite solar cell part in the receiving cavity (3); The roll-type perovskite solar cell part includes a hollow reel (6) with a return spring (5). The perovskite solar cell sheet (7) is wound on the hollow reel (6), and after charging is completed, the perovskite solar cell sheet (7) can automatically roll back onto the hollow reel (6); The receiving seat (2) is provided with a first notch (8) facilitating the protrusion of the perovskite solar cell sheet (7). The receiving seat (2) is further installed with a stop-rolling mechanism for controlling the protruding length of the perovskite solar cell sheet (7). A charging part is further provided on the perovskite solar cell sheet (7).

2. The mobile phone case with a scroll-type perovskite solar cell part according to claim 1, characterized in that, The receiving seat (2) is located on the back surface of the housing (1) and is arranged along the width direction of the housing (1); or, the receiving seat (2) is installed on the housing (1) and at the end far from the mobile phone charging port.

3. The mobile phone case with a scroll-type perovskite solar cell unit according to claim 1, wherein The charging part is a wired charging part or a wireless charging part.

4. The mobile phone case with a scroll-type perovskite solar cell part according to claim 1, wherein A pulling tab (11) is arranged at the end of the perovskite solar cell sheet (7). Through the pulling tab (11), the perovskite solar cell sheet (7) can be conveniently pulled out to expand the light absorption area.

5. The mobile phone case with a scroll-type perovskite solar cell unit according to claim 1, wherein The hollow reel (6) is sleeved on the fixed rod (4), and the two are coaxial; one end of the return spring (5) is fixed on the hollow reel (6), and the other end is fixed on the fixed rod (4).

6. The mobile phone case with a scroll-type perovskite solar cell unit according to claim 5, characterized in that, The cover (9) is provided with a limiting hole (10) for limiting the end of the fixed rod (4).

7. The mobile phone case with a scroll-type perovskite solar cell part according to claim 1, characterized in that, A second notch (14) is formed on the outer surface of the receiving seat (2), and the stop-rolling mechanism is installed at the second notch (14).

8. The mobile phone case with a scroll-type perovskite solar cell unit according to claim 1, wherein The stop-rolling mechanism includes a stop-roller (16). The stop-roller (16) is installed at the second notch (14) through a damping hinge (15). Through the pressing / open of the stop-roller (16), the expansion braking / loosening and rolling-back of the protruding length of the perovskite solar cell sheet (7) can be realized.

9. The mobile phone case with a scroll-type perovskite solar cell unit according to claim 8, characterized in that, One end of the stop-roller (16) is provided with an opening part facilitating its opening.

10. The mobile phone case with a scroll-type perovskite solar cell part according to any one of claims 1 to 9, characterized in that, The layer structure of the perovskite solar cell sheet (7) includes: A transparent conductive glass, an electron transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer which are sequentially stacked from bottom to top; or, A transparent conductive glass, a hole transport layer, a perovskite layer, an electron transport layer, and a metal electrode layer which are sequentially stacked from bottom to top; wherein, The thickness of the electron transport layer is 20 nm to 50 nm, the thickness of the perovskite layer is 200 nm to 800 nm, the thickness of the hole transport layer is 50 nm to 200 nm, and the thickness of the metal electrode layer is 80 nm to 150 nm.

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