Portable terminal cover and power supply method

Abstract

To provide a portable terminal cover and power supply method for improving convenience.SOLUTION: A portable terminal cover 2 covering a portable terminal 1 includes: an attaching part 31 in which the portable terminal 1 is attached; a laminated body 4 laminated with a plurality of sheet-shaped perovskite solar batteries (solar battery 42); and a power feeding part 5 for supplying the power generated by the perovskite solar battery to the portable terminal 1 via a wired or wireless connection. Since the need for a user to carry a charger for portable terminal 1 may be reduced, convenience can be improved.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a mobile terminal cover and a power supply method. [Background technology]

[0002] BACKGROUND ART Mobile terminal covers for covering mobile terminals such as smartphones and tablets are widely used (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2024-27693 Summary of the Invention [Problem to be solved by the invention]

[0004] However, a portable terminal has a built-in battery. When a user wants to charge the battery of the portable terminal at any location, the user must carry a charger along with the portable terminal, which is inconvenient.

[0005] An object of the present disclosure is to provide a mobile terminal cover and a power supply method that can improve convenience. [Means for solving the problem]

[0006] The mobile terminal cover according to the present disclosure is a mobile terminal cover that covers a mobile terminal, and is characterized by comprising an attachment portion to which the mobile terminal is attached, a laminate comprising a plurality of sheet-shaped perovskite solar cells stacked one on top of the other, and a power supply portion for supplying power generated by the perovskite solar cells to the mobile terminal via a wired or wireless connection.

[0007] In the present disclosure, a mobile terminal cover covers the mobile terminal. Perovskite solar cells have the advantage of being able to generate electricity even in weak indoor light. The power generated by the perovskite solar cells that make up the laminate is supplied to a mobile device via a power supply unit, either wired or wirelessly. The supplied power can then be used to charge the mobile device's battery. Since the portable terminal is attached to the attachment part, the user carrying the portable terminal will not forget the portable terminal cover. As a result, the need for the user to carry a charger for the portable terminal can be reduced, thereby improving convenience.

[0008] Because perovskite solar cells are translucent, light that passes through one of the multiple perovskite solar cells that make up the stack can be received by the other perovskite solar cells to generate electricity. By stacking sheet-like perovskite solar cells, multiple perovskite solar cells can be arranged compactly. Perovskite solar cells are flexible, making them easy to conform to the shape of a mobile device cover.

[0009] The mobile terminal cover according to the present disclosure further comprises a plate-shaped opening / closing portion that covers the mobile terminal in an openable and closable manner, and the laminate is disposed on one or both sides of the opening / closing portion.

[0010] In the present disclosure, a plate-shaped opening / closing part covers a mobile terminal in an openable and closable manner. When a user closes the opening / closing part, the opening / closing part covers the mobile terminal. The user opens the opening / closing part to expose the mobile terminal, and operates the mobile terminal or views images displayed on the mobile terminal. When the laminate is disposed on one side of the opening and closing part, the perovskite solar cell can receive light and generate electricity when the opening and closing part is open or closed. When the laminate is disposed on both sides of the opening and closing part, the perovskite solar cell can receive light and generate electricity whether the opening and closing part is open or closed.

[0011] The mobile terminal cover according to the present disclosure is characterized in that the power supply section has a coil for wirelessly supplying power to the mobile terminal, and the coil is disposed in the attachment section.

[0012] In the present disclosure, the power supply unit has a coil for wirelessly supplying power to the portable terminal. The coil is disposed in the attachment portion, and the portable terminal is attached to the attachment portion. Therefore, there is no risk of the portable terminal attached to the attachment portion being misaligned relative to the coil. Therefore, it is possible to prevent a decrease in power supply efficiency due to misalignment between the portable terminal and the coil.

[0013] The mobile terminal cover of the present disclosure is characterized in that a power supply line having a terminal that can be detachably connected to the mobile terminal or an external device is detachably connected to the power supply unit or fixedly connected to the power supply unit.

[0014] In the present disclosure, the terminal of the power supply line is detachably connected to the mobile terminal or the external device. When the terminals are connected to a mobile device, the power generated by the perovskite solar cell can be supplied to the mobile device via a power supply unit and power line. Wired power supply requires a simpler power supply unit configuration than wireless power supply, and has higher power supply efficiency. When the terminals are connected to an external device, the power generated by the perovskite solar cell can be supplied to the external device via the power supply unit and power supply line, allowing the user to power the external device without having to carry a charger for the external device.

[0015] The power supply line is either detachably connected to the power supply unit or fixedly connected to the power supply unit. When the power supply line is detachably connected to the power supply unit, the power supply unit can be configured so that the power supply line of a general charger can be used. When the power supply line is fixedly connected to the power supply unit, there is no risk of the user losing or misplacing the power supply line.

[0016] The mobile terminal cover according to the present disclosure is characterized by further comprising a housing portion capable of housing the power supply line.

[0017] In the present disclosure, the housing can house the power feeder, so that the power feeder can be carried compactly.

[0018] The power supply method according to the present disclosure is a method for supplying power to a mobile terminal, characterized in that the mobile terminal is attached to a mobile terminal cover equipped with a perovskite solar cell, and power generated by the perovskite solar cell is supplied to the mobile terminal via a wired or wireless connection.

[0019] According to the present disclosure, for example, a portable device cover according to the present disclosure can be used to supply power to a portable device, thereby reducing the need to carry a charger for the portable device and improving convenience. [Effects of the Invention]

[0020] The mobile terminal cover and power supply method of the present disclosure can improve convenience. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view schematically illustrating the appearance of a mobile terminal cover according to a first embodiment. [Figure 2] 3 is a cross-sectional view showing a main part of the mobile terminal cover. FIG. [Figure 3] FIG. 2 is a block diagram showing the main parts of the mobile terminal cover. [Figure 4] FIG. 10 is a block diagram showing the main parts of a mobile terminal cover according to a second embodiment. [Figure 5] FIG. 2 is a perspective view illustrating the appearance of a mobile terminal cover. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, embodiments of the present disclosure will be described.

[0023] Embodiment 1. FIG. 1 is a perspective view schematically showing the appearance of a mobile terminal cover according to a first embodiment. In the figure, reference numeral 1 denotes a mobile terminal, and mobile terminal 1 is, for example, a smartphone or a tablet. Mobile terminal 1 is shaped like a rectangular plate that is long in one direction. Mobile terminal 1 has a display screen 11. Display screen 11 is arranged on one surface of mobile terminal 1.

[0024] In the drawing, reference numeral 2 denotes a mobile terminal cover, and the mobile terminal cover 2 comprises a cover body 3. The cover body 3 is a so-called notebook-type cover, and comprises an attachment portion 31, an opening / closing portion 32, and a connecting portion 33. The attachment portion 31 is a rectangular plate that is long in one direction. The vertical length and horizontal width of the attachment portion 31 are greater than the vertical length and horizontal width of the mobile terminal 1.

[0025] Fig. 2 is a cross-sectional view showing a simplified view of the main part of the mobile terminal cover 2. For ease of viewing, the thickness of the cover body 3 and the solar cell 42 (described later) etc. are exaggerated in Fig. 3. 1 and 2, a case 311 is fixed to one surface of the attachment portion 31. The case 311 is shaped like a rectangular box with one surface completely open, and the outer bottom surface faces one surface of the attachment portion 31. The length, width, and depth of the case 311 correspond to the length, width, and thickness of the mobile terminal 1. The longitudinal direction of the case 311 is aligned with the longitudinal direction of the attachment portion 31.

[0026] The mobile terminal 1 is attached to the attachment portion 31 by fitting it into the case 311 so that the other surface of the mobile terminal 1 (the surface opposite the display screen 11) faces the inner bottom surface of the case 311. When the mobile terminal 1 is attached to the attachment portion 31, the other surface and four end surfaces of the mobile terminal 1 are covered by the case 311, and the display screen 11 is exposed through the opening of the case 311. Opening / closing part 32 is a rectangular plate that is long in one direction. The vertical length and horizontal width of opening / closing part 32 are equal to the vertical length and horizontal width of attachment part 31. Opening / closing part 32 completely covers the opening of case 311 (and display screen 11 of mobile terminal 1 attached to attachment part 31) in an openable and closable manner. In the following description, it is assumed that the mobile terminal 1 is attached to the attachment part 31.

[0027] The connecting portion 33 is strip-shaped. The vertical length of the connecting portion 33 is equal to the vertical length of the attached portion 31. The connecting portion 33 connects the attached portion 31 and the open-close portion 32 with one long side continuous with one long side of the attached portion 31 and the other long side continuous with one long side of the open-close portion 32. The connecting portion 33 is freely bendable in the width direction.

[0028] The attachment portion 31, the opening / closing portion 32, and the connecting portion 33 of the attachment portion 31 correspond to the front cover, back cover, and spine of the notebook. When the cover body 3 is opened, the connecting portion 33 extends, and the opening / closing portion 32 moves away from the display screen 11. When the cover body 3 is closed, the connecting portion 33 curves, and the opening / closing portion 32 covers the display screen 11 with one side facing the display screen 11. The user opens the opening / closing section 32 to expose the mobile terminal 1, and operates the mobile terminal 1 or views the images displayed on the display screen 11. Hereinafter, one surface of the opening / closing section 32 (the surface facing the display screen 11) will be referred to as the inner surface, and the other surface of the opening / closing section 32 will be referred to as the outer surface.

[0029] Case 311 and attachment portion 31 may have a camera hole for exposing a camera arranged on the other side of mobile terminal 1. Also, a side of case 311 may have a through-hole for exposing a terminal, a strap hole, etc. arranged on the end face of mobile terminal 1. Opening / closing portion 32 may have a speaker hole for transmitting sound output from speaker 12 arranged on one side of mobile terminal 1 when mobile terminal 1 is covered by opening / closing portion 32. An inner surface of opening / closing portion 32 may have a pocket for storing sheets, cards, etc. Connecting portion 33 may have a strap hole.

[0030] The cover body 3 may be configured such that a locking portion provided on the attachment portion 31 locks onto the opening / closing portion 32 when the cover body 3 is closed. For example, the locking portion is a magnetic belt extending from the attachment portion 31, and the opening / closing portion 32 has a ferromagnetic material (e.g., a piece of iron) built in. When the cover body 3 is closed, the magnetic belt of the attachment portion 31 attracts the ferromagnetic material of the opening / closing portion 32, causing the magnetic belt to lock onto the opening / closing portion 32. As a result, it is possible to prevent the cover body 3 from opening unnecessarily.

[0031] FIG. 3 is a block diagram showing the main parts of the mobile terminal cover 2. As shown in FIG. The mobile terminal cover 2 includes a laminate 4 . As shown in FIGS. 2 and 3, the laminate 4 includes a substrate 41 and a plurality of solar cells 42. The substrate 41 has a rectangular shape and is insulating. One surface of the substrate 41 is light reflective. Hereinafter, the light reflective surface of the substrate 41 will be referred to as a reflective surface.

[0032] Each solar cell 42 is a perovskite solar cell, has a sheet shape, and is flexible and optically transparent. The solar cells 42 receive light and generate DC power. The solar cells 42 have the advantage of being able to generate power even in weak indoor light. The multiple solar cells 42 are connected to each other in series, for example. When there are two solar cells 42, one solar cell 42 is stacked on the substrate 41 so as to completely cover the reflective surface of the substrate 41, and the other solar cell 42 is stacked on the one solar cell 42 so as to completely cover the other solar cell 42. The number of solar cells 42 may be three or more. The laminate 4 may not have a substrate 41.

[0033] 2, a rectangular hole 321 is provided on the outer surface of the opening / closing part 32. The laminate 4 is housed in the rectangular hole 321 such that the solar cells 42 are exposed through the opening of the rectangular hole 321. In order to protect the solar cells 42, it is desirable that the outermost surface of the laminate 4 be located more inward of the rectangular hole 321 than the outer surface of the opening / closing part 32.

[0034] As shown in FIG. 3, the mobile terminal cover 2 further includes a power storage unit 21, a conductor 22, and a power supply unit 5. The power storage unit 21 is, for example, a thin-film battery, and is built into the attachment portion 31. The power storage unit 21 and the solar cell 42 are connected in series to each other via a conductor 22. The conductor 22 is, for example, a film-like wiring material, and is freely bendable. The conductor 22 is built into the cover body 3, running from the solar cell 42 in the opening / closing portion 32 through the connecting portion 33 to the power storage unit 21 in the attachment portion 31.

[0035] Power generated by solar cell 42 is supplied to power storage unit 21 via conductor 22 and stored therein. The power stored in power storage unit 21 is supplied to power supply unit 5. It is difficult to stabilize the output from solar cell 42, but by providing power storage unit 21 between solar cell 42 and power supply unit 5, the output to power supply unit 5 can be stabilized. Note that mobile terminal cover 2 may include a constant voltage circuit that controls the output voltage from solar cell 42 to a constant voltage, and the output from the constant voltage circuit may be provided to power storage unit 21. The power supply unit 5 is built into the attachment unit 31. The power supply unit 5 of this embodiment is used to wirelessly supply power generated by the solar cell 42 to the mobile terminal 1, and includes a power conversion unit 51 and a coil 52.

[0036] The power conversion unit 51 includes, for example, a thin DC / AC inverter, and converts the DC power of the power storage unit 21 into AC power. The power storage unit 21 is also used as a power source for the power conversion unit 51. The coil 52 is, for example, in the form of a film, and serves to wirelessly supply power to the mobile terminal 1. AC power is input to the coil 52 from the power conversion unit 51. The power storage unit 21 (or the power storage unit 21 and the power conversion unit 51) may be built into the opening / closing unit 32. However, by building the power storage unit 21 and the power conversion unit 51 into the attachment unit 31, the light receiving area of ​​the solar cell 42 can be maximized.

[0037] There are no limitations on the method for manufacturing the cover body 3 or the method for incorporating the power storage unit 21, the power supply unit 5, etc. into the cover body 3. For example, the manufacturer prepares two rectangular leather sheets of appropriate thickness. The manufacturer then attaches the two rectangular sheets together with one side facing each other to form the cover body 3, which is integrally equipped with the attachment unit 31, the opening / closing unit 32, and the connecting unit 33. In this case, the rectangular hole 321 is formed by forming an opening in one of the two rectangular sheets. The power storage unit 21, the power supply unit 5, etc. are sandwiched between the two rectangular sheets and thus incorporated into the cover body 3.

[0038] The portable terminal 1 further includes a battery 13 and a power receiving coil 14. The portable terminal 1 is configured so that the battery 13 is charged by the electromotive force generated in the power receiving coil 14. The user attaches the portable terminal 1 to the attachment portion 31 of the portable terminal cover 2 by fitting the portable terminal 1 into the case 311. When the portable terminal 1 is attached to the attachment portion 31, the power receiving coil 14 and the coil 52 face each other, as shown in FIG.

[0039] When charging the battery 13 using the mobile terminal cover 2, the user closes the cover body 3 and points the laminated body 4 toward the light source. Light then enters the solar cell 42 on the outer surface of the opening / closing section 32, and the light that passes through this solar cell 42 enters the solar cell 42 on the inner surface of the opening / closing section 32. The light that passes through both solar cells 42 is reflected by the reflective surface of the substrate 41. The reflected light enters the solar cell 42 again.

[0040] Solar cell 42 receives light incident thereon and generates DC power. The DC power generated by solar cell 42 is supplied to power supply unit 5 via power storage unit 21. The DC power supplied to power supply unit 5 is converted into AC power by power conversion unit 51 and input to coil 52. When AC power is input to coil 52, electromagnetic induction generates an electromotive force in power receiving coil 14 of portable terminal 1. In other words, power generated by solar cell 42 is supplied wirelessly to portable terminal 1 by power supply unit 5, and battery 13 is charged.

[0041] Coil 52 is disposed in attachment portion 31, and portable terminal 1 is attached to attachment portion 31. Therefore, there is no risk of power receiving coil 14 of portable terminal 1 attached to attachment portion 31 being misaligned relative to coil 52. Therefore, it is possible to prevent a decrease in power supply efficiency due to misalignment between power receiving coil 14 and coil 52. Since the portable terminal 1 is attached to the attachment part 31, a user carrying the portable terminal 1 will not forget the portable terminal cover 2. As a result of the above, the need for the user to carry a charger for the portable terminal 1 can be reduced, thereby improving convenience.

[0042] Because the solar cells 42 are translucent, light that passes through one solar cell 42 among the multiple solar cells 42 that make up the laminate 4 can be received by the other solar cells 42 to generate electricity. By stacking the solar cells 42, the multiple solar cells 42 can be arranged compactly. The solar cell 42 is thin and light, which contributes to making the mobile terminal cover 2 thin and light. It should be noted that the wireless power supply from the mobile terminal cover 2 to the mobile terminal 1 is not limited to that by electromagnetic induction. The solar cells 42, or the power storage unit 21 and the solar cell 42, may be connected in parallel to each other.

[0043] In this embodiment, the laminate 4 is disposed on the outer surface of the opening / closing portion 32, but is not limited to this. The laminate 4 may be disposed on the inner surface of the opening / closing portion 32, or may be disposed on both the outer and inner surfaces of the opening / closing portion 32. The laminate 4 disposed on the outer surface of the opening / closing portion 32 generates electricity well when the cover body 3 is closed. The laminate 4 disposed on the inner surface of the opening / closing portion 32 generates electricity well when the cover body 3 is open. The laminate 4 may be disposed on the other surface of the attachment portion 31 (the surface to which the case 311 is not fixed) or on the connecting portion 33. The shapes and dimensional ratios of the various parts of the mobile terminal cover 2 are not limited to those shown in the drawings. For example, the cover body 3 is not limited to a notebook type.

[0044] Embodiment 2. The configuration and effects of the mobile terminal cover 2 of this embodiment are the same as those of the mobile terminal cover 2 of embodiment 1. Below, the differences from embodiment 1 will be explained, and the same components as those of embodiment 1 will be assigned the same reference numerals and their explanation will be omitted. FIG. 4 is a block diagram showing the main parts of the mobile terminal cover 2 according to the second embodiment. The power supply unit 5 of this embodiment is for supplying the power generated by the solar cell 42 to the mobile terminal 1 via a wired connection, and includes a power supply terminal 53 instead of the power conversion unit 51 and coil 52 of the first embodiment.

[0045] The mobile terminal 1 includes a power receiving terminal 15. The mobile terminal 1 is configured so that the battery 13 is charged by power supplied via the power receiving terminal 15. The mobile terminal 1 may or may not include the power receiving coil 14 of the first embodiment. In the figure, reference numeral 6 denotes a power feed line. The power feed line 6 has a first connection terminal 61 (terminal) and a second connection terminal 62 at both ends. The first connection terminal 61 is detachably connected to the power receiving terminal 15 of the mobile terminal 1. The second connection terminal 62 is detachably connected to the power feeding terminal 53 of the mobile terminal cover 2. When the first connection terminal 61 is connected to the power receiving terminal 15 and the second connection terminal 62 is connected to the power feeding terminal 53, the mobile terminal 1 and the mobile terminal cover 2 are electrically connected via the power feed line 6.

[0046] When charging battery 13 using mobile terminal cover 2 of this embodiment, the user connects power supply line 6 to power receiving terminal 15 and power supply terminal 53. In addition, the user closes cover body 3 and points laminated body 4 toward the light source. DC power generated by solar cell 42 is supplied to power supply unit 5 via power storage unit 21. DC power output from power storage unit 21 is supplied to power receiving terminal 15 through power supply terminal 53 and power supply line 6. In other words, the power generated by solar cell 42 is supplied to mobile terminal 1 via a wired connection from power supply unit 5, and battery 13 is charged.

[0047] In the drawing, reference numeral 7 denotes an external device, which is, for example, a mobile terminal that is not attached to the attachment portion 31. The external device 7 includes a power receiving terminal 71. The power receiving terminal 71 has the same configuration as the power receiving terminal 15. When powering external device 7 using mobile terminal cover 2 of this embodiment, the user connects power supply line 6 to power receiving terminal 71 and power supply terminal 53. In addition, the user closes cover body 3 and points laminated body 4 toward the light source. DC power generated by solar cell 42 is supplied to power supply unit 5 via power storage unit 21. DC power output from power storage unit 21 is supplied to power receiving terminal 15 through power supply terminal 53 and power supply line 6. In other words, power generated by solar cell 42 is supplied to external device 7 via power supply unit 5 via a wired connection.

[0048] In the case of the mobile terminal cover 2 of the first embodiment, it is necessary to prevent any object that obstructs electromagnetic induction from being present between the coil 52 and the power receiving coil 14, so there are restrictions on the materials of the attachment part 31 and the case 311. However, in the case of the mobile terminal cover 2 of the present embodiment, there are no restrictions on the materials of the attachment part 31 and the case 311 due to electromagnetic induction. Furthermore, since there is no need to convert the DC power generated by the solar cell 42 into AC power, the configuration of the power supply unit 5 is simple and the power supply efficiency is high. The power supply unit 5 is preferably configured so as to be able to use a general power supply line 6. In this case, the power supply line 6 is easily available.

[0049] The power feeder 6 is not limited to a configuration in which it is detachably connected to the power feed unit 5, but may also be a configuration in which it is fixedly connected to the power feed unit 5. In this case, there is no risk that the user will lose or forget the power feeder 6. For this purpose, for example, the second connection terminal 62 of the power feeder 6 is fixed to the power feed terminal 53, or the power feeder 6 without the second connection terminal 62 extends from the power feed terminal 53. The power receiving terminal 71 of the external device 7 may be directly connected to the power supply terminal 53 .

[0050] FIG. 5 is a perspective view showing the external appearance of the mobile terminal cover 2. As shown in FIG. The mobile terminal cover 2 further includes a storage section 23. The storage section 23 can store the power feeder 6. By storing the power feeder 6 in the storage section 23, the power feeder 6 can be carried compactly. In particular, by storing the power feeder 6 that is not fixedly connected to the power supply unit 5 in the storage section 23 after use, it is possible to prevent the user from losing or misplacing the power feeder 6.

[0051] The configuration of the accommodating section 23 is not limited. For example, the accommodating section 23 is a cable reel, has a thickness approximately equal to the depth of the case 311, and is fixed to one surface of the attachment section 31 so as to be adjacent to the case 311. The power feeder 6 is fixedly connected to the power supply section 5. A user pulls out the power feeder 6 from the accommodating section 23. The accommodating section 23 has a locking mechanism for maintaining the pulled-out power feeder 6 in the pulled-out state, and a winding mechanism for winding up the power feeder 6 by the biasing force of a spring when the locking mechanism is released. The accommodating section 23 may be built into the cover body 3.

[0052] The embodiments disclosed herein are to be considered as illustrative in all respects and not restrictive. The scope of the present invention is intended to include not only the above-mentioned meaning but also the meaning equivalent to the claims and all modifications within the scope of the claims. The constituent elements (technical features) disclosed in each embodiment can be combined with each other, and new technical features can be formed by such combinations. Furthermore, the independent and dependent claims described in the claims can be combined with each other in any and all combinations, regardless of the reference format. Furthermore, while the claims use a format in which a claim references two or more other claims (multiple claim format), this is not limited to this format. A multiple claim (multi-multi claim) that references at least one other multiple claim may also be used. [Explanation of symbols]

[0053] 1. Mobile devices 2 Mobile phone covers 23 Storage unit 31 Attached part 32 Opening and closing section 4 Laminate 42 Solar cells (perovskite solar cells) 5 Power supply unit 52 Coil 6 Power line 61 First connection terminal (terminal) 7 External equipment

Claims

1. A mobile terminal cover for covering a mobile terminal, a mounting portion to which the mobile terminal is attached; a laminate in which a plurality of sheet-shaped perovskite solar cells are stacked; a power supply unit for supplying the power generated by the perovskite solar cell to the mobile terminal via a wired or wireless connection; A mobile terminal cover comprising:

2. The mobile terminal further includes a plate-shaped opening / closing part that opens and closes the mobile terminal, 2. The mobile terminal cover according to claim 1, wherein the laminate is disposed on one or both surfaces of the opening / closing portion.

3. the power supply unit has a coil for wirelessly supplying power to the mobile terminal, 3. The portable terminal cover according to claim 1, wherein the coil is disposed in the attachment portion.

4. 3. The mobile terminal cover according to claim 1, wherein a power supply line having a terminal detachably connected to the mobile terminal or an external device is detachably connected to the power supply unit or is fixedly connected to the power supply unit.

5. 5. The mobile terminal cover according to claim 4, further comprising a housing portion capable of housing the power supply line.

6. 1. A method for powering a mobile terminal, comprising: attaching the mobile terminal to a mobile terminal cover including a perovskite solar cell; A power supply method comprising supplying the power generated by the perovskite solar cell to the mobile terminal via a wired or wireless connection.

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