Mobile power supply

Abstract

The utility model relates to a mobile power supply. The mobile power supply comprises a main shell and a supporting assembly, an energy storage part is accommodated in the main shell, and an electroacoustic transduction part is installed on the main shell. The main housing has a surface side and a bottom side opposite to each other. And the output end of the electroacoustic transduction piece is opposite to the bottom side of the main shell. The main shell is further connected with a charging wire, and one end of the charging wire is connected to the main shell. A strip-shaped groove is formed in the peripheral side of the main shell; and at least part of the charging wire can be accommodated in the strip-shaped groove. The supporting assembly has a use state and a storage state relative to the main shell. The supporting assembly comprises a supporting arm and a frame body used for bearing the electronic equipment. One end of the support arm is rotatably connected to the main shell, and the other end is rotatably connected to the frame body. In the using state, the face side faces the frame body in the direction away from the bottom side. In the storage state, the supporting arm and the frame body are attached to the bottom side of the main shell. The mobile power supply not only can charge the electronic equipment, but also has a playing function and a supporting function, so that the functional requirements of users can be better met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mobile charging, in particular to a mobile power supply. BACKGROUND

[0002] The mobile power supply can also be called a power bank or a mobile power supply, which is a portable charging device that can provide charging support for electronic devices such as mobile phones, tablets, and laptops.

[0003] Traditional mobile power supplies generally only have a charging output function, resulting in a single function of the mobile power supply, which is difficult to meet the needs of users. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model provides a mobile power supply which can solve or at least alleviate the above technical problems.

[0005] The utility model provides a mobile power supply, which comprises:

[0006] A main shell containing an energy storage member and an electro-acoustic transducer member; the main shell has opposite face sides and a bottom side; the output end of the electro-acoustic transducer member faces away from the bottom side of the main shell; the main shell is further connected to a charging cord, one end of the charging cord being connected to the main shell; a strip-shaped groove is formed on the outer circumferential side of the main shell; at least part of the charging cord can be accommodated in the strip-shaped groove; and

[0007] A support assembly having a use state and a storage state relative to the main shell; the support assembly comprises a support arm and a rack body for carrying electronic devices; one end of the support arm is rotatably connected to the main shell, and the other end is rotatably connected to the rack body; in the use state, the face side faces the rack body in a direction away from the bottom side; in the storage state, the support arm and the rack body are attached to the bottom side of the main shell.

[0008] The mobile power supply of the present application, the energy storage member outputs charging current to the electronic device. Since the main shell has opposite face sides and a bottom side, when the main shell is placed on a support surface with the bottom side facing down, the face side of the main shell faces up. When the main shell is placed on the support surface and the support assembly is in a use state, the frame body is flipped to above the face side by the support arm, and after the electronic device is carried on the frame body, the electronic device is above the face side of the main shell, so that the mobile power supply can support the electronic device at a certain height, making it more convenient for the user to observe the screen of the electronic device, and avoiding the user from needing to carry an additional support when going out. In the storage state, since the support arm and the frame body are attached to the bottom side of the main shell, the overall volume of the mobile power supply is reduced. The outer circumferential side of the main shell is formed with a strip-shaped groove, and the charging cord is accommodated in the strip-shaped groove, so that the position of the charging cord can be limited when the charging cord is not in use, and the charging cord is protected by the main shell, avoiding excessive bending or wear of the charging cord. The electro-acoustic transducer can emit sound, so that the mobile power supply can be used to play music or voice, avoiding the user from needing to carry an additional audio playing device when going out. Therefore, the mobile power supply of the present application not only has a charging function for the electronic device, but also has a playing function and a supporting function, so that the functional requirements of the user can be better met.

[0009] In one of the embodiments, the main shell comprises a first shell body and a second shell body connected to the first shell body; the first shell body and the second shell body enclose an inner cavity; the energy storage member is accommodated in the inner cavity; the first shell body is provided with a recess; and the electro-acoustic transducer is arranged in the recess.

[0010] In one of the embodiments, the main shell is provided with a key on the face side; and the key is distributed between the two electro-acoustic transducers on the face side of the main shell.

[0011] In one of the embodiments, one of the first shell body and the second shell body is connected with a positioning column, and the other is connected with a connecting column; and the positions of the positioning column and the connecting column are correspondingly arranged.

[0012] In one of the embodiments, further comprising a cover plate connected to the main shell; the cover plate covers at least the output end of the electro-acoustic transducer; the cover plate is provided with a plurality of spaced-apart sound outlets; and the positions of the sound outlets correspond to the output end of the electro-acoustic transducer.

[0013] In one of the embodiments, further comprising a dustproof screen covering the cover plate; and the dustproof screen is arranged on the side of the cover plate away from the electro-acoustic transducer.

[0014] In one embodiment, the support arm includes a first arm body and a second arm body; the first arm body is hollow, and the second arm body is inserted into the first arm body; one of the first arm body and the second arm body is rotatably connected to the first housing, and the other is rotatably connected to the second housing.

[0015] In one embodiment, one of the first arm body and the second arm body is provided with a plurality of linearly distributed slots, and the other is connected to an elastic block; the elastic block has a free state and a deformed state relative to the slots; in the free state, the elastic block is inserted into the slots; in the deformed state, the elastic block is outside the slots.

[0016] In one embodiment, the main shell has a first wall and a second wall facing away from the face; the distance between the second wall and the face is greater than the distance between the first wall and the face; the second wall is formed on at least two opposite sides of the first wall.

[0017] In one embodiment, the frame includes a back plate rotatably connected to the other end of the support arm and a support block rotatably connected to the back plate; the back plate is provided with a receiving groove; the support block has a first angle and a second angle relative to the back plate; the support block is received in the receiving groove to a greater extent at the first angle than at the second angle. Attached Figure Description

[0018] Figure 1 This is a perspective view of a mobile power bank according to an embodiment of this application, with the support component in use.

[0019] Figure 2 for Figure 1 The power bank shown is a three-dimensional schematic diagram from another angle.

[0020] Figure 3 for Figure 1 The diagram shown is an exploded view of the portable power bank.

[0021] Figure 4 for Figure 1 The power bank shown is a three-dimensional sectional view.

[0022] Figure 5 for Figure 1 An exploded view of the main casing and cover plate of the power bank shown.

[0023] Figure 6 for Figure 5 The diagram shows an exploded view of the main shell and cover plate from another angle.

[0024] Figure 7a for Figure 1A three-dimensional schematic diagram of the support components in the power bank shown.

[0025] Figure 7b for Figure 1 A three-dimensional schematic diagram of the support components in the power bank shown from another angle.

[0026] Figure 8 for Figure 7b The diagram shows an exploded view of the support components.

[0027] Figure 9 for Figure 1 The diagram shows a power bank in another state, with the support components in a stowed-in state.

[0028] Reference numerals: 100, Power bank; 20, Main shell; 201, Front side; 202, Bottom side; 203, Groove; 204, First wall surface; 205, Second wall surface; 206, Strip groove; 21, First shell; 211, Recess; 212, Inner cavity; 213, Positioning post; 22, Second shell; 221, Connecting post; 23, Electrical interface; 24, Connecting ear; 25, PCB board; 27, Button; 28, Charging cable; 30, Cover plate; 31, Sound outlet; 40, Dustproof mesh; 50, Energy storage component; 60, Electroacoustic transducer; 70, Support assembly; 71, Support arm; 711, First arm body; 712, Slot; 713, Second arm body; 714, Elastic block; 72, Frame; 721, Back plate; 722, Receiving slot; 723, Support block. Detailed Implementation

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

[0030] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] The technical solutions provided by the embodiments of this application are described below with reference to the accompanying drawings.

[0033] Combination Figure 1 and Figure 2 As shown, this application provides a portable power bank 100. The portable power bank 100 is capable of charging electronic devices. Understandably, the electronic devices can be mobile phones, tablets, or laptops.

[0034] Specifically, in combination Figures 2 to 4 As shown, the power bank 100 includes a main housing 20 and a support assembly 70. The main housing 20 houses an energy storage component 50 and an electroacoustic transducer 60. The main housing 20 has opposing front sides 201 and bottom sides 202. The output end of the electroacoustic transducer 60 faces away from the bottom side 202 of the main housing 20. The main housing 20 is also connected to a charging cable 28, one end of which is connected to the main housing 20. A strip groove 206 is formed on the outer periphery of the main housing 20. At least a portion of the charging cable 28 can be accommodated within the strip groove 206. The support assembly 70 has a use state and a storage state relative to the main housing 20. The support assembly 70 includes a support arm 71 and a frame 72 for supporting electronic devices. One end of the support arm 71 is rotatably connected to the main housing 20, and the other end is rotatably connected to the frame 72. In the use state, the front side 201 faces the frame 72 in a direction away from the bottom side 202. In the stowed state, the support arm 71 and the frame 72 are attached to the bottom side 202 of the main shell 20.

[0035] The portable power bank 100 of this application has an energy storage component 50 that outputs charging current to electronic devices. Since the main casing 20 has opposing side faces 201 and bottom faces 202, when the main casing 20 is placed on a support surface with its bottom face 202 facing down, its side faces 201 face up. When the main casing 20 is placed on the support surface and the support assembly 70 is in use, the frame 72 flips over above the side faces 201 via the support arm 71. After the electronic device is supported on the frame 72, it is positioned above the side faces 201 of the main casing 20. Thus, the portable power bank 100 can support the electronic device at a certain height, making it easier for users to view the screen and eliminating the need for users to carry an additional stand when going out. In the folded state, since the support arm 71 and the frame 72 are attached to the bottom face 202 of the main casing 20, the overall size of the portable power bank 100 is reduced. A strip-shaped groove 206 is formed on the outer periphery of the main shell 20, which accommodates the charging cable 28. This groove limits the position of the charging cable 28 when it is not in use and provides protection for the charging cable 28, preventing excessive bending or wear. The electroacoustic transducer 60 emits sound, enabling the power bank 100 to play music or voice messages, eliminating the need for users to carry additional audio playback devices when out and about. Therefore, the power bank 100 of this application, in addition to charging electronic devices, also has playback and support functions, thus better meeting the functional needs of users.

[0036] Understandably, when the main housing 20 is placed on the support surface with its bottom side 202 facing down, the center of gravity of the power bank 100 is lowered because the energy storage component 50 is housed within the main housing 20, allowing the support assembly 70 to provide more stable support for the electronic device.

[0037] Optionally, combined Figure 3 As shown, the power bank 100 also includes a PCB board 25 housed within the main housing 20. Control circuitry is formed on the PCB board 25.

[0038] Optionally, the power bank 100 also includes several buttons 27 to control different functions. Furthermore, combined with... Figure 3 and Figure 5 As shown, button 27 is mounted on the side 201 of the main housing 20. On the side 201 of the main housing 20, button 27 is distributed between two electroacoustic transducers 60.

[0039] In some embodiments, the main housing 20 has a groove 203 formed on its bottom side 202. In the stowed state, the support arm 71 and the frame 72 are at least partially accommodated within the groove 203. When the support assembly 70 is in the stowed state, the support arm 71 and the frame 72 are at least partially accommodated within the groove 203, thereby further reducing the overall volume of the power bank 100 and making the power bank 100 easy to carry.

[0040] In some implementations, combined Figure 3 and Figure 4 As shown, the main shell 20 includes a first shell 21 and a second shell 22 connected to the first shell 21. The first shell 21 and the second shell 22 enclose an inner cavity 212. The energy storage component 50 is housed in the inner cavity 212. The first shell 21 has a recess 211. The electroacoustic transducer 60 is disposed in the recess 211. The second shell 22 has a groove 203 formed on the side facing away from the first shell 21. Specifically, the recess 211 limits the position of the electroacoustic transducer 60. Optionally, the recess 211 can be a groove-like structure or a hole-like structure.

[0041] Optionally, combined Figure 1 As shown, an electrical interface 23 is mounted on the outer periphery of the main housing 20. The energy storage device 50 is electrically connected to the electrical interface 23. For example, the electrical interface 23 may be a USB interface.

[0042] In some other embodiments, the energy storage device 50 is electrically connected to the charging cable 28. For example, the charging cable 28 may be a USB cable.

[0043] Optionally, combined Figure 1 and Figure 2 As shown, the strip groove 206 is provided with the first housing 21. The strip groove 206 extends along the outer periphery of the first housing 21, which helps to increase the extension length of the strip groove 206 and accommodate the charging cable 28 to a greater extent.

[0044] In some implementations, combined Figure 2 As shown, the main housing 20 also includes a connecting ear 24 connected to the first housing 21. The connecting ear 24 is disposed on the outer periphery of the first housing 21. One end of the support arm 71 is rotatably connected to the connecting ear 24. Specifically, the circumferential direction of the outer periphery of the first housing 21 roughly corresponds to the circumferential direction of the edge of the bottom side 202, and this edge circumferential direction is perpendicular to the relative direction between the surface side 201 and the bottom side 202. Understandably, the connecting ear 24 is located outside the edge of the bottom side 202, so that by rotating the support arm 71 relative to the connecting ear 24, the support arm 71 and the frame 72 can be accommodated in the groove 203 of the bottom side 202, and the frame 72 can move to above the surface side 201. Specifically, the groove 203 is open towards the connecting ear 24.

[0045] In other embodiments, one or more rotatable joints may be provided on the support arm 71 so that the support arm 71 and the frame 72 can be accommodated in the groove 203 of the bottom side 202 in the storage state, and the frame 72 can move to the top of the front side 201 in the use state.

[0046] Optionally, the first housing 21 is integrally connected to the connecting ear 24.

[0047] Optionally, fasteners are respectively inserted into one end of the support arm 71 and the connecting ear 24, thereby limiting the rotational engagement between the support arm 71 and the connecting ear 24.

[0048] In some implementations, combined Figure 5 and Figure 6 As shown, one of the first housing 21 and the second housing 22 is connected to a positioning post 213, and the other is connected to a connecting post 221. The positions of the positioning post 213 and the connecting post 221 are correspondingly arranged. Optionally, the positioning post 213 and the connecting post 221 are arranged in a one-to-one correspondence, with the end of the connecting post 221 inserted into the end of the corresponding positioning post 213. Fasteners are inserted through the positioning post 213 and are also threaded through the connecting post 221, keeping the positioning post 213 and the connecting post 221 relatively fixed, thereby maintaining a stable relative position between the first housing 21 and the second housing 22.

[0049] Optionally, combined Figure 5 and Figure 6 As shown, the positioning post 213 is connected to the inner side of the first housing 21, and the connecting post 221 is connected to the inner side of the second housing 22. Understandably, the inner side of the first housing 21 is the side of the first housing 21 facing the second housing 22, and the inner side of the second housing 22 is the side of the second housing 22 facing the first housing 21.

[0050] Optionally, the positioning post 213 is connected to the inner side of the second housing 22, and the connecting post 221 is connected to the inner side of the first housing 21.

[0051] In some implementations, combined Figure 6 As shown, the main shell 20 has a first wall surface 204 and a second wall surface 205 facing away from the face side 201, respectively. The distance between the second wall surface 205 and the face side 201 is greater than the distance between the first wall surface 204 and the face side 201. Understandably, the first wall surface 204 and the second wall surface 205 are approximately parallel to the face side 201 of the main shell 20, and the first wall surface 204 has a greater relative depth than the second wall surface 205. The second wall surface 205 is formed at least on opposite sides of the first wall surface 204, thus having a larger distribution range. In the retracted state, the support arm 71 is close to the face side 201 of the main shell 20 relative to the frame 72, and the support arm 71 is accommodated in a position opposite to the first wall surface 204. The frame 72 has a greater width relative to the support arm 71, and the two sides of the frame 72 are accommodated in positions opposite to the second wall surface 205. Therefore, by making the distance between the second wall 205 and the side surface 201 greater than the distance between the first wall 204 and the side surface 201, the size of the groove 203 can be reduced, allowing the main shell 20 to retain a larger internal space.

[0052] Optionally, a stepped transition is formed between the first wall surface 204 and the second wall surface 205.

[0053] In some implementations, combined Figures 7a to 8 As shown, the support arm 71 includes a first arm body 711 and a second arm body 713. The first arm body 711 is hollow, and the second arm body 713 is inserted into the first arm body 711. One of the first arm body 711 and the second arm body 713 is rotatably connected to the first housing 21, and the other is rotatably connected to the second housing 22. Understandably, by adjusting the depth of the second arm body 713 inserted into the first arm body 711, the distance between the two ends of the support arm 71 can be adjusted, thereby allowing adjustment of the height of the frame 72 during use, supporting the electronic equipment at different heights.

[0054] Optionally, the length and width of the cross-section of the internal space of the first arm 711 correspond to the length and width of the cross-section of the second arm 713, respectively, so that the extension and retraction direction of the second arm 713 can be defined by the first arm 711.

[0055] Optionally, one end of the first arm 711 is rotatably connected to the main housing 20, and one end of the second arm 713 is inserted into the first arm 711. The other end of the second arm 713 is rotatably connected to the frame 72. More specifically, one end of the first arm 711 is rotatably connected to the connecting lug 24.

[0056] In some implementations, combined Figure 8 As shown, one of the first arm body 711 and the second arm body 713 is provided with a plurality of linearly distributed slots 712, and the other is connected to an elastic block 714. The elastic block 714 has a free state and a deformed state relative to the slots 712. In the free state, the elastic block 714 is inserted into the slot 712. In the deformed state, the elastic block 714 is outside the slot 712. Specifically, in the deformed state, the elastic block 714 has a larger deformation range than in the free state. Under the action of external force, the elastic block 714 transitions from the free state to the deformed state. According to the extension and retraction direction of the second arm body 713 relative to the first arm body 711, the distribution direction of the plurality of slots 712 is approximately parallel to the extension and retraction direction. When the elastic block 714 is in the free state, since the elastic block 714 is inserted into the slot 712, the position between the first arm body 711 and the second arm body 713 can be limited, allowing the support arm 71 to maintain a stable length. When the elastic block 714 is in a deformed state, the second arm 713 can freely extend and retract relative to the first arm 711 because the elastic block 714 leaves the slot 712, thus allowing the length of the support arm 71 to be adjusted.

[0057] Optionally, the slot 712 is disposed on the first arm body 711. One end of the elastic block 714 is connected to the second arm body 713. More specifically, one end of the elastic block 714 is connected to one end of the second arm body 713.

[0058] In some other embodiments, the first arm 711 and the second arm 713 can also be kept at a certain length by frictional damping.

[0059] In some implementations, combined Figure 7a and Figure 7b As shown, the frame 72 includes a back plate 721 rotatably connected to the other end of the support arm 71 and a support block 723 rotatably connected to the back plate 721. The back plate 721 has a receiving groove 722. The support block 723 has a first angle and a second angle relative to the back plate 721. Compared to the second angle, the support block 723 is more fully accommodated in the receiving groove 722 at the first angle. At the second angle, the support block 723 is at least partially located outside the receiving groove 722, and the support block 723 cooperates with the back plate 721 to support the electronic device. Understandably, at the second angle, the support block 723 protrudes relative to the front of the back plate 721, and when the electronic device is attached to the front of the back plate 721, the support block can provide support for the bottom edge of the electronic device. At the second angle, since the support block 723 is basically accommodated within the receiving groove 722, it can avoid affecting the flatness of the bottom side 202 of the main shell 20 and allow the power bank 100 to occupy less space.

[0060] Optionally, the support block 723 is partially inserted into the back plate 721 to achieve a rotatable connection between the support block 723 and the back plate 721. Alternatively, a rotating shaft can be inserted into the support block 723 and the back plate 721 to achieve a rotatable connection between the support block 723 and the back plate 721.

[0061] Optionally, the electroacoustic transducer 60 can be a loudspeaker or other device that can meet the playback requirements.

[0062] In some implementations, combined Figure 4 and Figure 5 As shown, the power bank 100 also includes a cover plate 30 connected to the main housing 20. The cover plate 30 covers at least the output end of the electroacoustic transducer 60, thereby protecting the electroacoustic transducer 60 from damage. The cover plate 30 has a plurality of spaced sound outlet holes 31. The positions of the sound outlet holes 31 correspond to the output end of the electroacoustic transducer 60, and the sound outlet holes 31 allow the sound emitted by the electroacoustic transducer 60 to pass through.

[0063] Optionally, the size of the cover plate 30 corresponds to the size of the side surface 201 of the main housing 20. Optionally, the cover plate 30 is connected to the first housing 21.

[0064] In some implementations, combined Figure 3 and Figure 4 As shown, the power bank 100 also includes a dustproof mesh 40 covering the cover plate 30. The dustproof mesh 40 is disposed on the side of the cover plate 30 facing away from the electroacoustic transducer 60, thereby preventing dust from entering the sound outlet 31 of the cover plate 30 and improving the sound output of the electroacoustic transducer 60. Optionally, the dustproof mesh 40 is attached to the surface of the cover plate 30.

[0065] The above embodiments are merely descriptions of preferred embodiments of this application and are not intended to limit the scope of this application. Any modifications and improvements made by those skilled in the art to the technical solutions of this application without departing from the spirit of this application should fall within the protection scope defined by the claims of this application.

Claims

1. A portable power bank, characterized in that, include: The main shell houses an energy storage device and an electroacoustic transducer; the main shell has opposing front and bottom sides. The output end of the electroacoustic transducer faces away from the bottom side of the main housing; the main housing is also connected to a charging cable, one end of which is connected to the main housing; a strip groove is formed on the outer periphery of the main housing; at least a portion of the charging cable can be accommodated in the strip groove; and A support assembly has a use state and a storage state relative to the main shell; the support assembly includes a support arm and a frame for supporting electronic devices; one end of the support arm is rotatably connected to the main shell, and the other end is rotatably connected to the frame; in the use state, the face side faces the frame in a direction away from the bottom side; in the storage state, the support arm and the frame are attached to the bottom side of the main shell.

2. The portable power bank according to claim 1, characterized in that, The main shell includes a first shell and a second shell connected to the first shell; the first shell and the second shell enclose an inner cavity; the energy storage device is housed in the inner cavity; the first shell has a recess; the electroacoustic transducer is disposed in the recess.

3. The portable power bank according to claim 2, characterized in that, The first housing and the second housing are connected by a positioning post to one of them and a connecting post to the other; the positions of the positioning post and the connecting post are set accordingly.

4. The portable power bank according to claim 1, characterized in that, The main housing has buttons mounted on its surface side; on the surface side of the main housing, the buttons are distributed between two electroacoustic transducers.

5. The portable power bank according to claim 1, characterized in that, It also includes a cover plate connected to the main housing; the cover plate at least covers the output end of the electroacoustic transducer; the cover plate is provided with a plurality of spaced sound outlet holes; the position of the sound outlet holes corresponds to the output end of the electroacoustic transducer.

6. The portable power bank according to claim 5, characterized in that, It also includes a dustproof net covering the cover plate; the dustproof net is disposed on the side of the cover plate opposite to the electroacoustic transducer.

7. The portable power bank according to claim 1, characterized in that, The support arm includes a first arm body and a second arm body; the first arm body is hollow, and the second arm body is inserted into the first arm body; one of the first arm body and the second arm body is rotatably connected to the first housing, and the other is rotatably connected to the second housing.

8. The portable power bank according to claim 7, characterized in that, One of the first arm body and the second arm body is provided with several slots distributed linearly, and the other is connected to an elastic block; the elastic block has a free state and a deformed state relative to the slots; in the free state, the elastic block is inserted into the slots; in the deformed state, the elastic block is outside the slots.

9. The portable power bank according to claim 1, characterized in that, The main shell has a first wall and a second wall facing away from the face; the distance between the second wall and the face is greater than the distance between the first wall and the face; the second wall is formed on at least two opposite sides of the first wall.

10. The portable power bank according to claim 1, characterized in that, The frame includes a back plate rotatably connected to the other end of the support arm and a support block rotatably connected to the back plate; the back plate is provided with a receiving groove; the support block has a first angle and a second angle relative to the back plate; relative to the second angle, the support block is received in the receiving groove to a greater extent at the first angle.

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