Flexible perovskite photovoltaic double-sided power generation wireless charging mobile phone shell

Abstract

The utility model discloses a flexible perovskite photovoltaic double-sided power generation wireless charging mobile phone shell, which comprises a fixed back plate part and a foldable panel part, and is characterized in that the fixed back plate part and the foldable panel part are integrally formed through a flexible connecting piece; a first flexible photovoltaic layer and a second flexible photovoltaic layer are arranged on the outer surface of the fixed back plate part and the outer surface of the foldable panel part respectively, and each flexible photovoltaic layer comprises a flexible base material, a perovskite power generation layer and a transparent conductive layer; a wireless charging module is integrated in the fixed backboard part, the wireless charging module comprises a rectifying and voltage stabilizing circuit and a transmitting coil, and the first flexible photovoltaic layer and the second flexible photovoltaic layer are connected to the rectifying and voltage stabilizing circuit through a parallel circuit and used for converting double-sided light energy into electric energy and outputting the electric energy to the wireless charging module. Through the arrangement of the first flexible perovskite photovoltaic layer, the second flexible perovskite photovoltaic layer and the transparent conductive layer, the area of the photovoltaic layers is increased, the light energy utilization rate is improved, energy transmission is optimized, and the service life of the mobile phone shell is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of flexible electronic device technology, specifically to a foldable phone case that integrates double-sided photovoltaic power generation and wireless charging functions, and is particularly suitable for the integration of flexible solar cells based on perovskite materials, high-durability foldable structure design and high-efficiency wireless charging module. Background Technology

[0002] With the widespread use of mobile devices, the function of phone cases has expanded from simple protection to intelligence and self-sufficiency in energy supply. Currently, solar-powered phone cases primarily harvest energy through single-sided photovoltaic panels; however, limitations in light energy utilization and the reliability of flexible structures still present the following problems:

[0003] 1. Low energy conversion efficiency: Traditional solar-powered phone cases mostly use monocrystalline silicon or thin-film solar cells, which can only utilize light from one side, and the rigid materials cannot adapt to folding requirements. Although bifacial power generation technology is used in photovoltaic power plants, it is not yet mature in flexible electronic devices, and there is a problem of difficulty in balancing light transmittance and conductivity.

[0004] 2. Folded structure is easily damaged: Most existing flexible connectors are made of TPU or silicone materials, which are prone to cracks or circuit breakage after long-term bending, resulting in a shortened service life.

[0005] 3. Limited Wireless Charging Efficiency: When a wireless charging module is built into a phone case, the synergistic efficiency between photovoltaic power generation and the charging circuit is insufficient. For example, the "Novel Solar Cell Rechargeable Phone Case" proposed in CN 2 1 9 8 7 5 8 3 8U suffers from unstable output voltage and significant coil overheating due to the lack of MPPT control and instantaneous energy storage design. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a flexible perovskite photovoltaic bifacial power generation wireless charging phone case with a large photoelectric conversion area, high power, and long lifespan.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A flexible perovskite photovoltaic bifacial power generation wireless charging phone case includes a fixed back panel and a foldable panel, wherein the fixed back panel and the foldable panel are integrally formed by a flexible connector.

[0009] The outer surface of the fixed back plate and the outer surface of the foldable panel are respectively provided with a first flexible photovoltaic layer and a second flexible photovoltaic layer. The flexible photovoltaic layer includes a flexible substrate, a perovskite power generation layer and a transparent conductive layer.

[0010] The fixed backplate integrates a wireless charging module, which includes a rectifier and voltage regulator circuit and a transmitting coil. The first flexible photovoltaic layer and the second flexible photovoltaic layer are connected to the rectifier and voltage regulator circuit through a parallel circuit to convert double-sided light energy into electrical energy and output it to the wireless charging module.

[0011] Furthermore, to improve the bending resistance of the phone case when folded, the flexible connector is made of polyurethane synthetic leather with a thickness of 0.5-1.2mm and a tensile strength ≥20MPa; the flexible connector has a serpentine wiring groove on its inner side, and a silver-plated copper wire connected to the parallel circuit is embedded in the groove, and the silver-plated copper wire is wrapped with a silicone insulating layer.

[0012] Furthermore, in order to improve the light capture efficiency, the surface of the perovskite power generation layer is provided with a microlens structure arranged in a hexagonal honeycomb pattern, and the transparent conductive layer is a fluorine-doped tin oxide (FTO) thin film with a sheet resistance ≤15Ω / sq and a light transmittance ≥85%.

[0013] Furthermore, to reduce electromagnetic losses, the transmitting coil of the wireless charging module is arranged in a spiral involute pattern, and a nanocrystalline magnetic shielding layer is provided below the coil; the rectifier and voltage regulator circuit integrates a maximum power point tracking controller (MPPT controller) and a supercapacitor buffer module, and the response time of the supercapacitor is ≤10ms.

[0014] Furthermore, to improve heat dissipation, the flexible substrate is a polyimide / polyethylene terephthalate (PI / PET) composite film, and a graphene heat dissipation layer with a thermal conductivity ≥1500W / (m·K) is attached to the inner side of the fixed back plate.

[0015] Furthermore, when the foldable panel is unfolded, it forms an angle of 0-170° with the fixed back panel.

[0016] Furthermore, the fixed backplate portion and the foldable panel portion are provided with annular sealing strips corresponding to the edges of the first flexible photovoltaic layer and the second flexible photovoltaic layer. The sealing strips are made of liquid silicone material with a compression set of ≤10%.

[0017] Due to the adoption of the above solution, the beneficial effects of this utility model are as follows:

[0018] 1. It adopts a flexible folded double-sided perovskite photovoltaic layer structure, which has a larger perovskite photovoltaic layer area, higher power, and higher photoelectric conversion efficiency.

[0019] 2. The surface of the perovskite power generation layer is provided with a microlens structure arranged in a hexagonal honeycomb pattern, which improves the light capture efficiency and thus improves the photoelectric conversion efficiency.

[0020] 3. The phone case has better heat dissipation, improves wireless charging efficiency, and extends the phone's lifespan. Attached Figure Description

[0021] Figure 1 This is the front view of the present invention;

[0022] Figure 2 This is a rear view of the present invention;

[0023] Figure 3 for Figure 1 AA section view;

[0024] Figure 4 for Figure 2 Enlarged sectional view of the middle section;

[0025] Figure 5 for Figure 3 Enlarged view of section C;

[0026] Figure 6 for Figure 3 Enlarged view of section D;

[0027] Figure 7 This is a circuit block diagram of the wireless charging module of this utility model.

[0028] In the attached diagram, 1 is the back panel; 2 is the front panel; 3 is the flexible connector; 31 is the wiring trough; 32 is the silver-plated copper wire; 33 is the insulating layer; 4 is the first flexible photovoltaic layer; 41 is the flexible substrate; 42 is the perovskite power generation layer; 43 is the transparent conductive layer; 5 is the second flexible photovoltaic layer; 6 is the wireless charging module; 61 is the rectifier and voltage regulator circuit; 62 is the transmitting coil; 63 is the shielding layer; 611 is the tracking controller; 612 is the buffer module; 7 is the parallel circuit; 8 is the graphene heat dissipation layer; and 9 is the sealing strip. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] like Figures 1 to 7 As shown, a flexible perovskite photovoltaic bifacial power generation wireless charging phone case includes a fixed back plate part 1 and a foldable panel part 2, wherein the fixed back plate part 1 and the foldable panel part 2 are integrally formed by a flexible connector 3.

[0031] A first flexible photovoltaic layer 4 and a second flexible photovoltaic layer 5 are respectively provided on the outer surface of the fixed back plate portion 1 and the outer surface of the foldable panel portion 2. The flexible photovoltaic layers 4 and 5 include a flexible substrate 41, a perovskite power generation layer 42 and a transparent conductive layer 43.

[0032] The fixed backplate 1 integrates a wireless charging module 6. The wireless charging module 6 includes a rectifier and voltage regulator circuit 61 and a transmitting coil 62. The first flexible photovoltaic layer 4 and the second flexible photovoltaic layer 5 are connected to the rectifier and voltage regulator circuit 61 through a parallel circuit 7, which is used to convert double-sided light energy into electrical energy and output it to the wireless charging module 6.

[0033] In one embodiment of this utility model, the flexible connector 3 is made of polyurethane synthetic leather with a thickness of 0.5-1.2 mm and a tensile strength ≥ 20 MPa. A serpentine wiring groove 31 is provided inside the flexible connector 3, and a silver-plated copper wire 32 connected to the parallel circuit 7 is embedded in the groove. The silver-plated copper wire is covered with a silicone insulating layer 33. The serpentine wiring groove 31 provides more deformation space for the silver-plated copper wire when the phone case is folded, making it less prone to breakage.

[0034] In one embodiment of this utility model, in order to improve the light capture efficiency, the surface of the perovskite power generation layer 42 is provided with a microlens structure arranged in a hexagonal honeycomb pattern, and the transparent conductive layer 43 is a fluorine-doped tin oxide (FTO) thin film with a sheet resistance ≤15Ω / sq and a light transmittance ≥85%.

[0035] In one embodiment of this utility model, to reduce electromagnetic loss, the transmitting coil 62 of the wireless charging module 6 is arranged in a spiral involute, and a nanocrystalline magnetic shielding layer 63 is provided below the coil to reduce electromagnetic loss. The rectifier and voltage regulator circuit 61 integrates a maximum power point tracking controller 611 (MPPT controller) and a supercapacitor buffer module 612, and the response time of the supercapacitor is ≤10ms.

[0036] In one embodiment of this utility model, in order to improve the heat dissipation effect, the flexible substrate 41 is a polyimide / polyethylene terephthalate (PI / PET) composite film, and a graphene heat dissipation layer 8 is attached to the inner side of the fixed back plate portion 1, with a thermal conductivity ≥1500W / (m·K).

[0037] In one embodiment of this utility model, when the foldable panel 2 is unfolded, it forms an angle of 0-170° with the fixed back panel 1, which can absorb sunlight to the maximum extent and convert it into electrical energy.

[0038] In one embodiment of this utility model, the fixed back plate portion 1 and the foldable panel portion 2 are provided with annular sealing strips 9 corresponding to the edges of the first flexible photovoltaic layer 4 and the second flexible photovoltaic layer 5. The sealing strips 9 are made of liquid silicone material with a compression permanent deformation rate of ≤10%, and are used to protect the flexible photovoltaic layer and the wireless charging module.

Claims

1. A flexible perovskite photovoltaic double-sided power generation wireless charging mobile phone shell, comprising a fixed back plate part (1) for fixing a mobile phone and a foldable panel part (2) for protecting the screen of the mobile phone, characterized in that: The fixed back plate part (1) and the foldable panel part (2) are integrally formed by a flexible connecting piece (3); The outer surface of the fixed back plate part (1) and the outer surface of the foldable panel part (2) are respectively provided with a first flexible photovoltaic layer (4) and a second flexible photovoltaic layer (5), and the flexible photovoltaic layer comprises a flexible substrate (41), a perovskite power generation layer (42) and a transparent conductive layer (43); The fixed back plate part (1) is internally integrated with a wireless charging module (6), the wireless charging module (6) comprises a rectifier and voltage stabilizing circuit (61) and a transmitting coil (62), the first flexible photovoltaic layer (4) and the second flexible photovoltaic layer (5) are connected to the rectifier and voltage stabilizing circuit (61) through a parallel circuit (7), for converting double-sided light energy into electrical energy and outputting to the wireless charging module (6).

2. The phone case of claim 1, wherein: The flexible connecting piece (3) is made of polyurethane synthetic leather, with a thickness of 0.5-1.2mm and a tensile strength ≥20MPa; the inner side of the flexible connecting piece (3) is provided with a serpentine wiring groove (31), and a silver-plated copper wire (32) connected with the parallel circuit (7) is embedded in the groove, and the silver-plated copper wire (32) is wrapped with a silica gel insulation layer (33).

3. The phone case of claim 1, wherein: The perovskite power generation layer (42) is provided with a microlens structure arranged in a hexagonal honeycomb shape on the surface, and the transparent conductive layer (43) is a fluorine-doped tin oxide (FTO) film, with a square resistance ≤15Ω / sq and a light transmittance ≥85%.

4. The phone case of claim 1, wherein: The transmitting coil (62) of the wireless charging module (6) is arranged in a spiral involute, and a nanocrystalline magnetic shielding layer (63) is arranged below the coil; the rectifier and voltage stabilizing circuit (61) is integrated with a maximum power point tracking controller (MPPT controller, 611) and a super capacitor buffer module (612), and the response time of the super capacitor is ≤10ms.

5. The phone case of claim 1, wherein: The flexible substrate (41) is a polyimide / polyethylene terephthalate (PI / PET) composite film, and a graphene heat dissipation layer (8) with a thermal conductivity ≥1500W / (m·K) is attached to the inner side of the fixed back plate part (1).

6. The phone case of claim 1, wherein: When the foldable panel part (2) is unfolded, an included angle of 0-170° is formed with the fixed back plate part (1).

7. The phone case of claim 1, wherein: The fixed back plate part (1) and the foldable panel part (2) are respectively provided with annular sealing rubber strips (9) and (10) along the edges of the flexible photovoltaic layer, and the sealing rubber strips (9) and (10) are made of liquid silicone material, with a compression permanent set ≤10%.

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