Mobile power supply

Abstract

The utility model relates to a mobile power supply, which comprises a shell and a control module, and is characterized in that the shell is provided with a first through hole communicating the inside and the outside; the control module is arranged in the shell and comprises a first circuit board and a roller key, the roller key is electrically connected with the first circuit board and can rotate relative to the first circuit board, and the circumferential side face of the roller key is exposed to the outside of the shell through the first through hole so as to be used for interacting with the outside of the shell. Therefore, a user can contact the wheel circumference side surface of the roller key through the first through hole to drive the roller key to rotate, thereby realizing function adjustment of the mobile power supply. Compared with a pressing type button, the roller key can rotate in the forward direction and the reverse direction, so that more adjustment modes are provided, and adjustment is more convenient. Moreover, compared with a touch screen type key, the roller key has rotation motion of a solid structure, so that the operation is more direct, simpler and smoother.

Description

Technical Field

[0001] This application relates to the technical field of energy storage, and particularly to a mobile power supply. Background Art

[0002] A mobile power supply, also known as a power bank, is a portable device that can charge electronic devices anytime and anywhere. The mobile power supply has also developed various different functions, such as a power display function and a parameter adjustment function, etc. Usually, various functions of the mobile power supply are adjusted through buttons.

[0003] However, currently, the buttons of the mobile power supply are inconvenient to operate when implementing function adjustment, and urgent improvement is needed. Summary of the Utility Model

[0004] Based on this, in view of the problem of inconvenient button operation of the mobile power supply, it is necessary to provide a mobile power supply.

[0005] This application provides a mobile power supply, which includes a housing and a control module. The housing is provided with a first through hole communicating with the inside and outside. The circumferential side surface of the roller button is exposed to the outside of the housing through the first through hole for interacting with the outside of the housing.

[0006] In one embodiment, the roller button is completely disposed inside the housing; or a partial structure of the roller button located on the circumferential outer side is exposed outside the housing through the first through hole.

[0007] In one embodiment, a surrounding member is provided in the first through hole. The surrounding member includes a first side close to the outside of the housing and a second side close to the inside of the housing. The shape of the first side is adapted to the shape of the first through hole. The second side of the surrounding member is provided with a ring opening. A partial structure of the roller button passes through the ring opening; the shape and size of the ring opening are adapted to the shape and size of the cross section of the roller button at the ring opening.

[0008] In one embodiment, the mobile power supply includes a transmission component, which includes a transmission line and a winding structure. One end of the transmission line is telescopically disposed through the housing, and the other end of the transmission line is movably wound around the winding structure and electrically connected to the first circuit board.

[0009] In one embodiment, the housing includes a top cover. The top cover is recessed with a receiving groove facing the outside of the housing. The bottom wall of the receiving groove is provided with a second through hole communicating with the inside and outside of the housing; the transmission line includes an interconnected cable and a male connector. The cable is wound around the winding structure and telescopically passes through the second through hole, and the male connector is received in the receiving groove.

[0010] In one embodiment, a limiting portion is provided in the accommodating groove, and the limiting portion cooperates with the transmission line to fix the transmission line in the accommodating groove.

[0011] In one embodiment, the limiting portion is configured as a magnet, and the limiting portion is magnetically connected and fixed to the transmission line; the limiting portion protrudes or recesses from the side wall of the accommodating groove, and the limiting portion is fixedly engaged with the transmission line by interference.

[0012] In one embodiment, the mobile power supply further includes a wire member disposed on the housing. The wire member is provided with a guiding hole, and the transmission line passes through the guiding hole and the second through hole and is exposed outside the housing.

[0013] In one embodiment, the winding structure includes a winding member and an outer cover. The winding member includes a rotating shaft, and the winding member is rotatably engaged with the outer cover around the central axis of the rotating shaft. The outer cover covers the outside of the winding member and is connected to the housing;

[0014] The winding member is provided with wire grooves continuously distributed on the outer side of the circumference of the rotating shaft, and the transmission line is disposed in the wire grooves and wound around the outside of the rotating shaft.

[0015] In one embodiment, the housing includes a front shell and a rear cover. The rear cover is connected to the front shell to enclose a relatively sealed inner cavity; the mobile power supply further includes an energy storage member and a display module. The energy storage member is disposed in the inner cavity and electrically connected to the first circuit board; the display module is disposed in the inner cavity and electrically connected to the first circuit board. The housing is provided with a third through hole, and the display side of the display module faces the third through hole.

[0016] In the above mobile power supply, the circumferential side surface of the roller button is exposed to the outside of the housing through the first through hole, so that the user can contact the circumferential side surface of the roller button through the first through hole to drive the roller button to rotate, thereby realizing the function adjustment of the mobile power supply. Compared with the push-button type button, the roller button can rotate in both forward and reverse directions, so there are more adjustment methods and the adjustment is more convenient. And, compared with the touch screen type button, the roller button has a rotational movement with a physical structure, and the operation is more direct, simple and smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An isometric schematic view of a mobile power supply provided by an embodiment of the present application.

[0018] Figure 2 is Figure 1 A cross-sectional view of the mobile power supply shown along line A-A.

[0019] Figure 3 is Figure 1Explosion schematic diagram of the middle case, the surrounding component, the display module and the transmission component in the shown mobile power supply.

[0020] Figure 4 For Figure 1 Cross-sectional view of the shown mobile power supply along line B-B.

[0021] Figure 5 For Figure 1 Explosion schematic diagram of the rear cover, the top cover and the energy storage component in the shown mobile power supply.

[0022] Figure 6 For Figure 1 Explosion schematic diagram of the control module in the shown mobile power supply.

[0023] Figure 7 Schematic diagram of the display screen of the mobile power supply provided by an embodiment of the present application.

[0024] Reference numerals: 10, mobile power supply; 100, housing; 101, inner cavity; 110, top cover; 111, accommodating groove; 112, second through hole; 113, fourth through hole; 120, middle case; 121, first through hole; 122, third through hole; 130, rear cover; 140, cover plate; 200, control module; 210, roller button; 220, first circuit board; 221, interface component; 230, second circuit board; 300, surrounding component; 301, first side; 302, second side; 310, ring opening; 410, transmission line; 411, cable; 412, male connector; 420, retracting structure; 421, retracting part; 422, outer cover; 423, rotating shaft; 424, wire groove; 500, wire component; 510, guiding hole; 600, energy storage component; 700, display module; 810, first electrical connector; 820, second electrical connector. Detailed Description of the Embodiment

[0025] To make the above objects, features and advantages of the present application more obvious and understandable, the following will describe the specific embodiments of the present application in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that if there appear such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0027] In addition, if there appear such terms as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there appears the term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0028] In the present application, unless otherwise clearly defined and limited, if there appear such terms as "mounted", "connected", "coupled", "fixed", etc., these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0029] In the present application, unless otherwise clearly defined and limited, if there appears a description such as a first feature being "on" or "under" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0030] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0031] Referring to Figure 1 and Figure 2 , a mobile power supply 10 provided by an embodiment of the present application includes a housing 100 and a control module 200, and the control module 200 is disposed in the housing 100. The housing 100 is provided with a first through hole 121 communicating with the inside and outside. The control module 200 includes a roller button 210 and a first circuit board 220. The roller button 210 is electrically connected to the first circuit board 220 and can rotate relative to the first circuit board 220. The circumferential side surface of the roller button 210 is exposed to the outside of the housing 100 through the first through hole 121 for interaction with the outside of the housing 100.

[0032] In the above mobile power supply 10, the circumferential side surface of the roller button 210 is exposed to the outside of the housing 100 through the first through hole 121, so that the user can contact the circumferential side surface of the roller button 210 through the first through hole 121 to drive the roller button 210 to rotate and realize the function adjustment of the mobile power supply 10. Compared with the push-button type button, the roller button 210 can rotate in both forward and reverse directions, so there are more adjustment methods and the adjustment is more convenient. And, compared with the touch screen type button, the roller button 210 has a rotational movement with a physical structure, and the operation is more direct, simple and smooth.

[0033] Further, compared with setting the end face of the button or the button for interaction with the operator, in the present application, the circumferential side surface of the roller button 210 is used for interaction with the operator. When the operator needs to operate the roller button 210, the circumferential side surface of the roller button 210 can be toggled, and a single finger of the operator can achieve it, and the operation is convenient. And, in combination with Figure 2 , when the end face of the roller button 210 is used for interaction with the operator, it is usually necessary to set the whole end face or even part of the circumferential side surface to be exposed outside the housing 100. In the present application, only a partial area of the circumferential side surface needs to be exposed through the first through hole 121 to interact with the operator, so that the overall shape of the mobile power supply 10 can be designed to be more regular and convenient to carry.

[0034] Furthermore, it should be noted that as Figure 2At a certain moment, only a part of the circumferential side surface of the roller button 210 may be aligned with the first through hole 121 to be exposed to the outside of the housing 100 through the first through hole 121. The operator can drive the roller button 210 to rotate by contacting and driving the part exposed through the first through hole 121, so that any other area of ​​the roller button 210 rotates to a position facing the first through hole 121.

[0035] Please continue reading Figure 2 The present application does not limit the roller button 210 to be extended outside the housing 100. For example, in one embodiment, the roller button 210 can be completely disposed inside the housing 100. For example, when the operator uses the index finger to rotate the roller button 210, the index finger can partially enter the first through hole 121 and contact the roller button 210 to drive the roller button 210 to rotate.

[0036] Of course, in other embodiments, a partial structure of the roller button 210 located on the circumferential outside may also be provided, which is exposed to the shell 100 through the first through hole 121. The positional relationship between the roller button 210 and the shell 100 may be selected according to actual needs, which will not be elaborated here.

[0037] See also Figure 2 and Figure 3 In one embodiment, a surrounding piece 300 is provided in the first through hole 121. The surrounding piece 300 includes a first side 301 close to the outside of the housing 100, and a second side 302 close to the inside of the housing 100. The shape of the first side 301 is adapted to the shape of the first through hole 121. The second side 302 of the surrounding piece 300 is provided with a ring opening 310, and a part of the structure of the roller button 210 is penetrated by the ring opening 310. The shape and size of the ring opening 310 are adapted to the shape and size of the cross section of the roller button 210 at the ring opening 310. In this way, the surrounding piece 300 can be adapted to be connected between the inner wall of the first through hole 121 and the outer side of the roller button 210, and dust and debris can be reduced from entering the housing 100 from the gap between the first through hole 121 and the roller button 210. At the same time, the ring opening 310 can provide a certain support for the roller button 210, reducing the risk of the roller button 210 loosening or falling off due to excessive force during operation.

[0038] See also Figure 2 Furthermore, in the direction from the first side 301 to the second side 302, the cross-sectional size of the surrounding member 300 gradually decreases to form a constricted trumpet shape. When the operator operates the knob, the operating body (such as a finger) can contact the surrounding member 300, which is convenient for operation and can improve the hand feel.

[0039] In one embodiment, the surrounding member 300 can be snap-fitted with the housing 100 to be disposed within the first through hole 121. Of course, the surrounding member 300 can also be directly integrally provided with the housing 100 or ultrasonically welded to the housing 100.

[0040] Please refer to Figure 3 and Figure 4 , in one embodiment, the mobile power supply 10 includes a transmission assembly, and part of the transmission assembly is disposed within the housing 100. The transmission assembly includes a transmission line 410 and a retracting structure 420. One end of the transmission line 410 is telescopically passed through the housing 100, and the other end of the transmission line 410 is movably wound around the retracting structure 420 and electrically connected to the first circuit board 220. When using the mobile power supply 10, the operator can pull out the transmission line 410 from the housing 100 to connect the device to be charged, thereby achieving charging. When storing, the transmission line 410 can be pushed back into the housing 100, and the pushed-back transmission line 410 can be wound around the retracting structure 420, without occupying additional storage space, making the mobile power supply 10 convenient to carry. In this embodiment, by providing the mobile power supply 10 with a telescopic transmission assembly, the immediate charging requirement can be satisfied while ensuring portability.

[0041] Please refer to Figure 4 and Figure 5 , in one embodiment, the housing 100 includes a top cover 110. The top cover 110 is recessed with a receiving groove 111, and the receiving groove 111 faces the outside of the housing 100. A second through hole 112 communicating the inside and outside of the housing 100 is formed in the bottom wall of the receiving groove 111, and the transmission line 410 is passed through the second through hole 112. The transmission line 410 includes an interconnected cable 411 and a male connector 412. The cable 411 is wound around the retracting structure 420 and telescopically passes through the second through hole 112, and the male connector 412 is received within the receiving groove 111. Since the receiving groove 111 faces the outside of the housing 100 and the male connector 412 is received within the receiving groove 111, when the transmission line 410 on the mobile power supply 10 needs to be used, the male connector 412 can be directly taken out from the receiving groove 111, and the cable 411 can be pulled out to the required length, which is convenient to operate.

[0042] In one embodiment, a limiting portion (not shown in the figure, the same below) is provided within the receiving groove 111. The limiting portion cooperates with the transmission line 410 to fix the transmission line 410 within the receiving groove 111. Therefore, the transmission line 410 can be stably fixed to the mobile power supply 10 through the limiting portion, which is convenient to carry. The limiting portion can be in limiting cooperation with the male connector 412, or can be in limiting cooperation with the cable 411. Or, the limiting portion can be in limiting cooperation with both the male connector 412 and the cable 411 simultaneously.

[0043] Further, in one embodiment, the limiting portion is configured as a magnet, and the limiting portion is magnetically attracted and connected to the transmission line 410 for fixation. That is, the transmission line 410 can be limited within the accommodation groove 111 by magnetic attraction. The limiting portion can be magnetically attracted and connected to the male connector 412 and / or the cable 411 (for example, a ferromagnetic metal ring is sleeved on the cable 411).

[0044] In another embodiment, the limiting portion protrudes or recesses from the groove side wall of the accommodation groove 111, and the limiting portion is fixedly connected to the transmission line 410 by interference fit. That is, at this time, the transmission line 410 can be firmly fixed within the accommodation groove 111.

[0045] Please refer to Figure 2 and Figure 4 , in one embodiment, the retracting structure 420 includes a retracting member 421 and an outer cover 422. The retracting member 421 includes a rotating shaft 423. The retracting member 421 is provided with wire grooves 424 continuously distributed on the outer circumference of the rotating shaft 423. The transmission line 410 is arranged in the wire grooves 424 and wound around the outside of the rotating shaft 423, so as to realize the winding and storage of the transmission line 410. It can be understood that the transmission line 410 is arranged in the wire grooves 424, and the side walls of the wire grooves 424 can limit the transmission line 410, so that the transmission line 410 can be spirally wound around the rotating shaft 423.

[0046] The central axis of the retracting member 421 around the rotating shaft 423 is rotationally matched with the outer cover 422 to facilitate the telescopic movement of the transmission line 410.

[0047] The outer cover 422 covers the outside of the retracting member 421 and is fixedly connected to the housing 100 by screws. The outer cover 422 covers the outside of the retracting member 421, which can reduce the probability of the transmission line 410 coming out of the retracting member 421 and improve the position stability of the transmission line 410.

[0048] Please refer to Figure 3 , in one embodiment, the mobile power supply 10 further includes a wire guiding member 500, and the wire guiding member 500 is arranged on the housing 100. The wire guiding member 500 is provided with a guiding hole 510, and the transmission line 410 passes through the guiding hole 510 and the second through hole 112 and is exposed outside the housing 100. The guiding hole 510 can limit the position and telescopic movement direction of the transmission line 410, so as to improve the smoothness of the telescopic movement of the transmission line 410 and reduce the risk of the transmission line 410 getting stuck.

[0049] Further, the wire guiding member 500 can be arranged between the top cover 110 and the retracting structure 420. The wire guiding member 500 can be arranged on the side of the top cover 110 facing the inside of the housing 100, or the wire guiding member 500 can be connected to other structures of the housing 100.

[0050] Please refer to Figure 3 and Figure 4, in one embodiment, the mobile power supply 10 further includes an energy storage component 600 and a display module 700, both of which are disposed within the housing 100. The housing 100 includes a front shell 120 and a rear cover 130, and the rear cover 130 is connected to the front shell 120 to enclose a relatively sealed inner cavity 101. The front shell 120 and the top cover 110 can be fixed by snap connection, or the front shell 120 and the top cover 110 can be fixed by ultrasonic welding.

[0051] In one embodiment, the top cover 110 is disposed on the front shell 120. Similarly, the top cover 110 can be snap-connected to the front shell 120, or the top cover 110 can be integrally provided with the front shell 120, or the top cover 110 can be fixed to the front shell 120 by ultrasonic welding. The first through hole 121 can be opened on the front shell 120.

[0052] Please refer to Figure 3 and Figure 4 , in one embodiment, the energy storage component 600 is disposed within the inner cavity 101 and is electrically connected to the first circuit board 220. The control module further includes a second circuit board 230, and the second circuit board 230 is also disposed within the inner cavity 101. The second circuit board 230 is electrically connected to the energy storage component 600, and the energy storage component 600 is electrically connected to the first circuit board 220 through the second circuit board 230. In another embodiment, the energy storage component 600 can also be directly connected to the first circuit board 220, that is, the second circuit board 230 can be not provided at this time.

[0053] Please refer to Figure 3 and Figure 6 , in one embodiment, the mobile power supply 10 is provided with a first electrical connector 810, and the first electrical connector 810 is used for electrically connecting and transmitting the line 410 and the first circuit board 220. The first electrical connector 810 can be configured as a flexible circuit board, one end of the flexible circuit board is welded to the pad of the transmission component, and the other end is welded to the first circuit board 220. In another embodiment, the transmission component can also be provided with connection contacts, and the connection contacts are directly welded to the first circuit board 220.

[0054] Please refer to again Figure 3 , in one embodiment, the display module 700 is disposed within the inner cavity 101 and is electrically connected to the first circuit board 220. The display content of the display module 700 can be adjusted through the roller button 210. The housing 100 is provided with a third through hole 122, and the display side of the display module 700 faces the third through hole 122. Alternatively, the display module 700 can directly pass through the third through hole 122 for display. Or, the display module 700 can be disposed within the housing 100, and a cover plate 140 is embedded in the third through hole 122. The cover plate 140 is made of a light-transmitting material. The display module 700 displays a picture through the cover plate 140.

[0055] Further, the mobile power supply 10 is provided with a second electrical connector 820, and the second electrical connector 820 is electrically connected to the display module 700 and the first circuit board 220. The second electrical connector 820 can also be configured as a flexible circuit board, and both ends of the second electrical connector 820 are respectively soldered to the display module 700 and the first circuit board 220.

[0056] In one embodiment, the display module 700 can be fixed to the front shell 120 by screws. As Figure 6 , the roller button 210 and the first circuit board 220 are electrically connected by soldering, so as to reduce the risk of the roller button 210 becoming loose and having poor contact. The first circuit board 220 can be fixed to the front shell 120 by screws.

[0057] As Figure 6 , the circumferential side surface of the roller button 210 can be provided with concave-convex structures such as stripes and patterns to increase the friction of the circumferential side surface and facilitate the user's operation.

[0058] It should be noted that the roller button 210 can not only transmit different control signals to the first circuit board 220 when driven to rotate, but also transmit control signals to the first circuit board 220 when pressed.

[0059] By driving the roller button 210 to rotate, different modes of the mobile power supply 10 and different display screens of the display module 700 can be switched. For example Figure 7 in, mode1 shows the power information of the mobile power supply, mode2 shows the input and output parameters of the mobile power supply, mode3 shows the battery information parameters (temperature, power, etc.) of the mobile power supply, mode4 shows the brightness of the display module, mode5 shows the high-temperature alarm state of the mobile power supply, and mode6 shows the small-current mode of the mobile power supply. It should be understood that Figure 7 is only an example to illustrate the display screen of the display module 700, and is not a limitation on the modes, display screens and display information of the mobile power supply 10. The mobile power supply 10 can also be set to have other modes, display information and display screens according to requirements.

[0060] When switching to a display of a certain display information, by clicking and pressing the roller button 210, the display module 700 can be triggered to light up or the display time of the brightness of the display module 700 can be adjusted. When the input and output parameters are displayed, by double-clicking and pressing the roller button 210, the small-current mode can be switched. It should be noted that the operations such as single-clicking and double-clicking here are only examples to illustrate the operation method of the roller button 210, and are not a limitation on the operation method of the roller button 210.

[0061] Please refer to Figure 1 and Figure 6, in one embodiment, the first circuit board 220 is provided with a plurality of interface components 221, and the top cover 110 is provided with a plurality of fourth through holes 113. The plurality of interface components 221 respectively pass through the plurality of fourth through holes 113 in a one-to-one correspondence to be electrically connected and cooperated with the outside through the fourth through holes 113. The plurality of interface components 221 may include, but are not limited to, inputting electric energy and outputting electric energy to the mobile power supply 10. It can be understood that each of the interface components 221 may adopt one or more of a Micro USB interface, a USB Type-A interface, a USB Type-B interface, a USB Type-C interface, and a Lightning interface. The male connector 412 of the transmission line 410 may be one of a USB Type-C male connector, a Micro USB male connector, or a Lightning male connector. Moreover, each of the interface components 221 and the male connector 412 of the transmission line 410 may also be configured in other forms according to requirements, which will not be elaborated herein one by one.

[0062] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0063] The above-described embodiments only represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A mobile power source, characterized in that: The mobile power supply comprises: A housing, wherein the housing is provided with a first through hole communicating with the inside and the outside; A control module is disposed in the shell, and includes a first circuit board and a roller button. The roller button is electrically connected to the first circuit board and can rotate relative to the first circuit board. The circumferential side of the roller button is exposed to the outside of the shell through the first through hole for interaction with the outside of the shell.

2. The mobile power source according to claim 1, characterized in that: The roller button is completely disposed in the housing; or A partial structure of the roller button located on the outer side in the circumferential direction is exposed to the housing through the first through hole.

3. The mobile power source according to claim 1 or 2, characterized in that: A surrounding piece is provided in the first through hole, and the surrounding piece includes a first side close to the outside of the shell, and a second side close to the inside of the shell, the shape of the first side is adapted to the shape of the first through hole, and a ring opening is provided on the second side of the surrounding piece, and a partial structure of the roller button passes through the ring opening; the shape and size of the ring opening are adapted to the shape and size of the cross section of the roller button at the ring opening.

4. The mobile power source according to claim 1 or 2, characterized in that: The mobile power supply includes a transmission component, which includes a transmission line and a retractable structure. One end of the transmission line can be telescopically inserted into the shell, and the other end of the transmission line can be movably wound around the retractable structure and electrically connected to the first circuit board.

5. The mobile power source according to claim 4, characterized in that: The shell includes a top cover, the top cover is recessed with a receiving groove, the receiving groove faces the outside of the shell, and the bottom wall of the receiving groove is provided with a second through hole connecting the inside and outside of the shell; the transmission line includes interconnected cables and a male end of a connector, the cable is wound on the winding structure and telescopically penetrates the second through hole, and the male end of the connector is accommodated in the receiving groove.

6. The mobile power source according to claim 5, characterized in that: A limiting portion is provided in the accommodating groove, and the limiting portion cooperates with the transmission line to fix the transmission line in the accommodating groove.

7. The mobile power source according to claim 6, characterized in that: The limiting part is configured as a magnet, and the limiting part is magnetically connected and fixed to the transmission line; The limiting portion is protruding or recessed on the groove side wall of the accommodating groove, and the limiting portion is fixed with the transmission line through interference fit.

8. The mobile power source according to claim 5, characterized in that: The mobile power source further comprises a wire member, the wire member is arranged in the housing, a guide hole is opened in the wire member, and the transmission line passes through the guide hole and the second through hole and is exposed outside the housing.

9. The mobile power source according to claim 4, characterized in that: The reeling structure comprises a reeling member and an outer cover, the reeling member comprises a rotating shaft, the reeling member rotates with the outer cover around the central axis of the rotating shaft, the outer cover is arranged outside the reeling member and connected to the housing; The winding member is provided with wire grooves which are continuously distributed on the outer side of the rotating shaft in the circumferential direction, and the transmission line is arranged in the wire grooves and wound around the outside of the rotating shaft.

10. The mobile power source according to claim 1 or 2, characterized in that: The housing includes a front shell and a back cover, wherein the back cover is connected to the front shell to enclose and form a relatively sealed inner cavity; the mobile power supply also includes: An energy storage component, which is disposed in the inner cavity and electrically connected to the first circuit board; A display module is disposed in the inner cavity and electrically connected to the first circuit board. A third through hole is formed in the shell, and a display side of the display module faces the third through hole.

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