Mobile power supply

Abstract

The utility model relates to the technical field of electronic equipment, in particular to a mobile power supply. Comprising a housing, a circuit board, a battery pack, a first data line and a second data line. A circuit board cavity and a battery bin cavity are arranged in the shell, a circuit board is arranged in the circuit board cavity, and a battery pack is arranged in the battery bin cavity; the circuit board cavity and the battery bin cavity are adjacently arranged in the direction perpendicular to the thickness direction of the shell. An accommodating groove is formed in a middle frame of the shell; the first data line penetrates through the side, close to the circuit board, of the middle frame and is electrically connected with the circuit board, the second data line penetrates through the side, close to the circuit board, of the middle frame and is electrically connected with the circuit board, and the first data line and the second data line are both contained in the containing groove. The mobile power supply is more compact in overall structure and higher in integration, meets the requirement of a user for charging multiple devices in daily use, and greatly improves the practicability and convenience of the mobile power supply.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment technical field, especially a mobile power supply. BACKGROUND

[0002] With the popularity of intelligent electronic equipment, mobile power supply as a portable energy storage device has become a daily necessity for users. The traditional mobile power supply usually adopts a laminated structure design, that is, the circuit board and the battery pack are stacked along the thickness direction of the shell. This layout method is beneficial to modular assembly, but it will cause the overall thickness of the product to increase significantly, which is difficult to meet the user's demand for lightweight products. In addition, in order to facilitate user use, the existing mobile power supply is integrated with a data line in the thickness direction of the shell, which not only leads to further increase of the shell thickness, making it difficult to meet the user's demand for lightweight products, but also cannot meet the demand of charging multiple devices at the same time. SUMMARY

[0003] The technical problem to be solved by the embodiments of the utility model lies in providing a mobile power supply to solve the problem of low integration and compact structure of the mobile power supply in the prior art.

[0004] The mobile power supply provided by the embodiments of the utility model comprises:

[0005] A shell is provided with a circuit board cavity and a battery compartment cavity inside; the circuit board cavity and the battery compartment cavity are arranged adjacent in a direction perpendicular to the thickness direction of the shell; a circuit board is arranged in the circuit board cavity, and a battery pack is arranged in the battery compartment cavity; a receiving groove is arranged at the middle frame of the shell;

[0006] A first data line comprises a first line body and a first connector connected to one end of the first line body; the other end of the first line body is arranged on one side of the middle frame close to the circuit board and is electrically connected to the circuit board; the first connector is arranged in the receiving groove; the first line body is at least partially protruded from the middle frame, so that the first line body defines a hanging opening for external components to pass through;

[0007] A second data line comprises a second line body and a second connector connected to one end of the second line body; the other end of the second line body is arranged on one side of the middle frame close to the circuit board and is electrically connected to the circuit board; the second line body and the second connector are arranged in the receiving groove.

[0008] In an embodiment, the accommodation groove comprises a first groove segment extending circumferentially along the middle frame, the first groove segment comprising a first accommodating portion and a first clamping portion, the first clamping portion being located on a side of the first accommodating portion away from the other end of the first wire body, the first clamping portion being in communication with the first accommodating portion, the first accommodating portion being configured to accommodate part of the first wire body, and the first clamping portion being configured to accommodate the first connector, the profile of the first connector being larger than the profile of the first accommodating portion.

[0009] In an embodiment, the accommodation groove further comprises a second groove segment, the second groove segment comprising a second accommodating portion and a second clamping portion, the second accommodating portion being in communication with the first clamping portion, and the second clamping portion being in communication with the second accommodating portion and located on a side of the second accommodating portion away from the first clamping portion, the second accommodating portion being configured to accommodate the second wire body, and the second clamping portion being configured to accommodate the second connector.

[0010] In an embodiment, the mobile power supply further comprises a magnet assembly, the magnet assembly comprising a first magnet and a second magnet, the first magnet being arranged at the first connector, and the second magnet being arranged on a side of the circuit board cavity close to the accommodation groove, the first magnet being magnetically attracted to the second magnet when the first connector is accommodated in the accommodation groove.

[0011] In an embodiment, the circuit board cavity comprises a first cavity wall arranged opposite to the groove bottom of the accommodation groove, the first cavity wall being provided with an annular protruding edge, and the second magnet being embedded in the annular protruding edge.

[0012] In an embodiment, the middle frame of the shell is further provided with a through hole, the through hole being in communication with the circuit board cavity.

[0013] The mobile power supply further comprises a connecting structure, the connecting structure comprising:

[0014] a mounting seat, the mounting seat being at least partially arranged through the through hole, so that the mounting seat has a plug-in portion located in the circuit board cavity, the plug-in portion being provided with a plug-in groove;

[0015] a plug block, the plug block being arranged in the plug-in groove, so that the outer profile of the connecting structure is larger than the outer profile of the through hole.

[0016] In an embodiment, the plug-in portion comprises a circumferential wall arranged circumferentially along the through hole, the plug-in groove being arranged at the circumferential wall, and the plug-in groove being arranged around the circumferential wall.

[0017] In an embodiment, the mounting seat further comprises a shielding portion connected to the plug-in portion, the shielding portion being arranged at the through hole, and the shape of the shielding portion being adapted to the shape of the through hole.

[0018] In an embodiment, the circuit board cavity comprises a second cavity wall adjacent to the through hole; the plug-in block comprises a connecting plate and two plug-in arms, one end of each of the two plug-in arms is connected to one side of the connecting plate, the two plug-in arms are inserted into two sides of the slot, and the second cavity wall is provided with a clamping protrusion, and the two plug-in arms are clamped between the clamping protrusion and the second cavity wall.

[0019] In an embodiment, the battery pack comprises a plurality of batteries, and the plurality of batteries are arranged in a direction perpendicular to the thickness of the shell; the shell is provided with a first clamping plate and a second clamping plate in the thickness direction, and the plurality of batteries are clamped between the first clamping plate and the second clamping plate.

[0020] Compared with the prior art, the mobile power supply provided by the embodiment of the utility model has the beneficial effects that: the mobile power supply has a more compact overall structure, is more integrated, and meets the demand of users for charging multiple devices in daily use, greatly improving the practicality and convenience.

[0021] Specifically, (1) by arranging the circuit board cavity and the battery compartment cavity side by side in a direction perpendicular to the thickness of the shell, the overall thickness of the shell is effectively reduced, the volume of the mobile power supply is optimized, and the mobile power supply is more lightweight and portable.

[0022] (2) The first data line and the second data line arranged on the shell enable the mobile power supply to charge multiple devices at the same time, meeting the demand of users for charging multiple devices in daily use.

[0023] (3) The first wire body and the second wire body are arranged on one side of the shell close to the circuit board cavity, and this ingenious design effectively shortens the internal wiring distance and avoids the generation of redundant space. At the same time, since the first wire body and the second wire body are arranged at the middle frame, they do not increase the overall thickness of the shell, further enhancing the compactness of the internal structure of the mobile power supply and improving the space utilization.

[0024] (4) The middle frame of the shell is further provided with a receiving groove for receiving the first data line and the second data line, which not only reduces the occupation of external space by the data lines, making the mobile power supply more neat and beautiful, but also effectively avoids problems such as twisting and deformation of the data lines caused by random placement, and plays a good protection role on the data lines.

[0025] (5) The first wire body is in a bent state and exposed outside the shell, and the bent first wire body forms a hanging opening, which can conveniently carry the mobile power supply for the user, for example, the external member can be a finger, and the user can hook the first wire body by the finger, so as to carry the mobile power supply without the need for gripping, greatly improving the portability. BRIEF DESCRIPTION OF DRAWINGS

[0026] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. In the accompanying drawings:

[0027] Figure 1 This is one of the perspective schematic diagrams of the mobile power supply provided in the embodiments of this utility model;

[0028] Figure 2 yes Figure 1 Enlarged view of a portion of position A in the middle;

[0029] Figure 3 This is a second perspective view of the portable power bank provided in this embodiment of the utility model;

[0030] Figure 4 This is a disassembly diagram of the power bank provided in this embodiment of the utility model;

[0031] Figure 5 This is a three-dimensional schematic diagram of the outer shell of the power bank provided in this embodiment of the utility model;

[0032] Figure 6 yes Figure 5 Enlarged view of a portion of position D;

[0033] Figure 7 yes Figure 4 Enlarged view of a portion of position B in the middle;

[0034] Figure 8 yes Figure 4 Enlarged view of a portion of position B in the middle;

[0035] Figure 9 This is a partial internal schematic diagram of the power bank provided in an embodiment of the present invention;

[0036] Figure 10 yes Figure 9 A disassembly diagram of the first data cable, outer casing, and magnet assembly;

[0037] Figure 11 yes Figure 10 Enlarged view of a portion of position E in the middle;

[0038] Figure 12 yes Figure 10 A magnified view of the middle F position.

[0039] The labels for the attached figures are as follows:

[0040] 1000, portable power bank;

[0041] 10. Outer shell; 11. Circuit board cavity; 111. First cavity wall; 1111. Annular protrusion; 112. Second cavity wall; 1121. Snap-fit ​​protrusion; 12. Battery compartment cavity; 121. First retaining plate; 1211. First arc-shaped surface; 122. Second retaining plate; 1221. Second arc-shaped surface; 13. Middle frame; 131. Receiving slot; 1311. First slot segment; 1311a. First receiving portion; 1311b. First snap-fit ​​portion; 1312. Second slot segment; 1312a. Second receiving portion; 1312b. Second snap-fit ​​portion; 132. First side surface; 133. Second side surface; 14. Through hole;

[0042] 20. First data cable; 21. First cable body; 22. First connector;

[0043] 30. Second data cable; 31. Second cable body; 32. Second connector;

[0044] 40. Magnet assembly; 41. Second magnet;

[0045] 50. Connection structure; 51. Mounting base; 511. Insertion part; 5111. Slot; 5112. Peripheral wall; 512. Covering part; 52. Insertion block; 521. Connecting plate; 522. Insertion arm;

[0046] 60. Circuit board; 61. Input interface; 62. Output interface; 63. Switch button;

[0047] 70. Battery pack; 71. Battery. Detailed Implementation

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0049] This utility model embodiment provides a mobile power bank 1000, such as Figure 1 - Figure 4As shown, the power bank 1000 includes a housing 10, a circuit board 60, a battery pack 70, a first data cable 20, and a second data cable 30. The housing 10 contains a circuit board cavity 11 and a battery compartment cavity 12. The circuit board cavity 11 houses the circuit board 60, and the battery compartment cavity 12 houses the battery pack 70. The circuit board cavity 11 and the battery compartment cavity 12 are adjacent to each other in a direction perpendicular to the thickness direction of the housing 10. A receiving groove 131 is provided at the middle frame 13 of the housing 10. The first data cable 20 includes a first wire 21 and a first connector 22 connected to one end of the first wire 21. The other end of the first wire 21 passes through the middle frame 13 near the circuit board 60. The first connector 22 is received in the receiving groove 131 and is electrically connected to the circuit board 60. The first wire 21 protrudes at least partially from the middle frame 13 so that the first wire 21 defines a hanging opening for external components to pass through. The second data line 30 includes a second wire 31 and a second connector 32 connected to one end of the second wire 31. The other end of the second wire 31 passes through the middle frame 13 on the side near the circuit board 60 and is electrically connected to the circuit board 60. Both the second wire 31 and the second connector 32 are received in the receiving groove 131.

[0050] Specifically, firstly, by arranging the circuit board cavity 11 and the battery compartment cavity 12 side-by-side in a direction perpendicular to the thickness of the outer casing 10, the overall thickness of the outer casing 10 is effectively reduced, optimizing the size of the power bank 1000 and making it lighter and more portable. Secondly, the first data cable 20 and the second data cable 30 provided on the outer casing 10 enable the power bank 1000 to charge multiple devices simultaneously, meeting the user's daily needs for charging multiple devices. Thirdly, the first cable 21 and the second cable 31 are located on the side of the middle frame 13 near the circuit board cavity 11. This layout cleverly shortens the internal wiring distance, avoiding redundant space. At the same time, since the first cable 21 and the second cable 31 are located at the middle frame 13, they do not affect the overall thickness of the outer casing 10, further enhancing the compactness of the internal structure of the power bank 1000 and improving space utilization. Fourthly, the middle frame 13 of the outer casing 10 is also provided with a receiving slot 131 for accommodating the first data cable 20 and the second data cable 30. This not only reduces the space occupied by the data cables, but also makes the power bank 1000 more neat and beautiful. It also effectively avoids problems such as twisting and deformation caused by careless placement of the data cables, thus providing good protection for the data cables. Fifthly, the first cable 21 is partially bent and exposed outside the outer casing 10. The bending of the first cable 21 forms a hanging opening, which makes it convenient for users to carry the power bank 1000. For example, the external component can be a finger, and the user can hook the first cable 21 with their finger, thus eliminating the need to carry the power bank 1000 by gripping it, greatly improving the portability of the power bank 1000.

[0051] It is evident that the 1000 power bank is more integrated, not only more practical and convenient, but also with a compact overall structure, which can meet the user's needs for charging multiple devices in daily use.

[0052] In this application, the first connector 22 and the second connector 32 can be USB interfaces, TYPE-C interfaces or Lightning interfaces, and no limitation is made here.

[0053] The power bank 1000 also includes an input interface 61 and an output interface 62. The input interface 61 and the output interface 62 are disposed inside the circuit board cavity 11 and partially exposed outside the outer casing 10. The input interface 61 and the output interface 62 are electrically connected to the circuit board 60 to facilitate users to charge the power bank 1000 itself or other electronic devices through an external connection cable.

[0054] Similarly, the power bank 1000 also includes a switch button 63, which is located inside the circuit board cavity 11 and partially exposed outside the housing 10. The switch button 63 is electrically connected to the circuit board 60. Users can turn the power bank 1000 on or off to charge electronic devices by using the switch button 63, thereby improving safety.

[0055] Reference Figure 1 , Figure 5 as well as Figure 6 In one embodiment, the receiving slot 131 includes a first slot segment 1311 extending circumferentially along the middle frame 13. The first slot segment 1311 includes a first receiving portion 1311a and a first snap-fit ​​portion 1311b. The first snap-fit ​​portion 1311b is located on the side of the first receiving portion 1311a away from the other end of the first wire 21. The first snap-fit ​​portion 1311b communicates with the first receiving portion 1311a. The first receiving portion 1311a is used to receive part of the first wire 21, and the first snap-fit ​​portion 1311b is used to receive the first connector 22. The outline of the first connector 22 is larger than the outline of the first receiving portion 1311a. With this configuration, the second latching portion 1312b can limit the installation of the first connector 22, preventing the first data cable 20 from detaching from the receiving slot 131. The function of the second receiving portion 1312a is to prevent excessive twisting and deformation at the connection point between the first cable 21 and the first connector 22 when installing the first connector 22 into the receiving slot 131, thereby protecting the first cable 21 and facilitating installation. In addition, the setting that the outline of the first connector 22 is larger than the outline of the first receiving portion 1311a can increase the stability of the connection between the first data cable 20 and the receiving slot 131 when the user carries the power bank 1000 through the hanging port, preventing the first connector 22 from falling out of the receiving slot 131.

[0056] Reference Figure 6In one embodiment, in the extending direction of the receiving groove 131, the adjacent positions of the first snap-fit ​​portion 1311b and the first receiving portion 1311a have a gradually narrowing trend. Thus, since the adjacent position of the first snap-fit ​​portion 1311b is set to gradually narrow, the fit between the corresponding area on the first connector 22 and the first snap-fit ​​portion 1311b can be improved, thereby improving the stability of the connection between the two.

[0057] Reference Figure 1 In one embodiment, the receiving slot 131 further includes a second slot segment 1312, which includes a second receiving portion 1312a and a second latching portion 1312b. The second receiving portion 1312a is connected to the first latching portion 1311b, and the second latching portion 1312b is connected to the second receiving portion 1312a and is located on the side of the second receiving portion 1312a away from the first latching portion 1311b. The second receiving portion 1312a is used to receive the other end of the second wire 31 located in the latching portion. With this configuration, the second receiving portion 1312a is used to receive the second wire 31, and the second latching portion 1312b is used to receive the second connector 32, so as to ensure that the second data cable 30 can be reliably received in the receiving slot 131, prevent the second data cable 30 from falling out of the receiving slot 131, and improve the connection stability between the second data cable 30 and the receiving slot 131.

[0058] Similarly, in the extending direction of the receiving slot 131, the adjacent position of the second snap-fit ​​portion 1312b and the second receiving portion 1312a also has a gradually narrowing trend.

[0059] Reference Figure 5 In one embodiment, the middle frame 13 includes two first side surfaces 132 disposed opposite to each other and a second side surface 133 connecting the two first side surfaces 132. A first groove segment 1311 is disposed on one side of the second side surface 133, a second receiving portion 1312a is disposed on the second side surface 133 and extends along the circumference of the middle frame 13 along the second side surface 133 to one of the first side surfaces 132, and a second snap-fit ​​portion 1312b is disposed on the first side surface 132 where the second receiving portion 1312a is located. This increases the length of the second cable 31, making it easier for users to charge electronic devices using the second data cable 30.

[0060] Reference Figure 9 - Figure 11In one embodiment, the power bank 1000 further includes a magnet assembly 40, which includes a first magnet (not shown) and a second magnet 41. The first magnet is disposed at the first connector 22, and the second magnet 41 is disposed within the circuit board cavity 11 near the receiving groove 131. When the first connector 22 is received in the receiving groove 131, the first magnet is magnetically attracted to the second magnet 41. This arrangement, through the magnetic attraction generated by the first magnet and the second magnet 41, further securely fixes the data cable within the receiving groove 131, resulting in higher connection stability. Specifically, both the first magnet and the second magnet 41 are magnets.

[0061] In one embodiment, the first connector 22 is provided with an overmolded part, and the first magnet is embedded in the overmolded part. In this way, the overmolded part not only fixes the first magnet in place, but also prevents the first magnet from being exposed outside the first connector 22, resulting in a cleaner and more aesthetically pleasing overall appearance.

[0062] In one embodiment, the circuit board cavity 11 includes a first cavity wall 111 disposed opposite to the bottom of the receiving groove 131. The first cavity wall 111 is provided with an annular protrusion 1111, and the second magnet 41 is embedded in the annular protrusion 1111. This arrangement enables the second magnet 41 to be positioned and installed in a limiting manner. The annular protrusion 1111 effectively limits the first magnet, improves connection stability, prevents the second magnet 41 from falling out of the preset position, and provides better structural reliability while making the installation method quicker and more convenient.

[0063] Reference Figure 9 , Figure 10 as well as Figure 12 In one embodiment, the middle frame 13 of the outer casing 10 is further provided with a through hole 14, which connects to the circuit board cavity 11. The power bank 1000 also includes a connection structure 50, which includes a mounting base 51 and a plug 52. The mounting base 51 is at least partially inserted through the through hole 14, so that the mounting base 51 has a plug portion 511 located in the circuit board cavity 11. The plug portion 511 is provided with a slot 5111, and the plug 52 is inserted into the slot 5111, so that the outer contour of the connection structure 50 is larger than the outer contour of the through hole 14. In this way, the plug 52 can prevent the mounting base 51 from detaching from the outer casing 10 through the through hole 14, thereby realizing the connection between the first cable 21 and the outer casing 10 and preventing the data cable from separating from the outer casing 10. Furthermore, when installing the first line 21 to the outer casing 10, the user only needs to pass the mounting base 51 through the through hole 14 and insert it into the slot 5111 using the plug 52 to achieve installation. Compared with the existing embodiment that uses adhesive bonding, this installation method is more convenient, easier to operate, and has better connection stability.

[0064] In one embodiment, the insertion part 511 includes a peripheral wall 5112 arranged circumferentially along the through hole 14, and a slot 5111 is disposed at the peripheral wall 5112, and the slot 5111 is arranged around the peripheral wall 5112. With this arrangement, since the slot 5111 is annular, and the annular design of the slot 5111 does not have a specific installation direction, the user does not need to precisely align it during installation. This greatly simplifies the installation process, facilitates the quick insertion of the insertion block 52 into the slot 5111, and improves the convenience and efficiency of installation.

[0065] In one embodiment, the mounting base 51 further includes a shielding portion 512 connected to the insertion portion 511. The shielding portion 512 is installed at the through hole 14, and the shape of the shielding portion 512 is adapted to the shape of the through hole 14. With this configuration, the shielding portion 512 can fill the through hole 14. From an appearance perspective, the surface of the outer shell 10 of the power bank 1000 is more complete, without obvious holes, and the transition at the connection point between the data cable and the outer shell 10 is more natural, enhancing the overall aesthetics of the product.

[0066] In one embodiment, the insert 52 includes a connecting plate 521 and two insert arms 522. One end of each insert arm 522 is connected to one side of the connecting plate 521. The two insert arms 522 are inserted into both sides of the slot 5111. A snap-fit ​​protrusion 1121 is provided on the second cavity wall 112, and the two insert arms 522 are sandwiched between the snap-fit ​​protrusion 1121 and the second cavity wall 112. In this way, on the one hand, the snap-fit ​​protrusion 1121 and the second cavity wall 112 cooperate to restrict the movement of the insert 52 in the orientation of the through hole 14, thereby limiting the installation of the insert 52 and improving the reliability of the connection between the insert 52 and the outer shell. On the other hand, it can increase the contact area between the insert 52 and the outer shell 10, making the connection more secure. At the same time, after the insert 52 is installed, it fits snugly against the second cavity wall 112, with no gap between them. The arrangement of this connection structure 50 can make full use of the internal space of the battery 71 plate cavity, reduce the impact on the arrangement of the circuit board 60, and help to reduce the size of the mobile power supply 1000 itself.

[0067] In one embodiment, there are two connecting structures 50, one of which is located at the other end of the second line 31, and the other is located at the other end of the first line 21.

[0068] Reference Figure 4 In one embodiment, the battery pack 70 includes a plurality of batteries 71 arranged in a direction perpendicular to the thickness of the outer casing 10. In the thickness direction of the outer casing 10, the outer casing 10 is provided with a first clamping plate 121 and a second clamping plate 122 disposed opposite to each other. The first clamping plate 121 and the second clamping plate 122 are both located inside the battery compartment cavity 12, and the plurality of batteries 71 are sandwiched between the first clamping plate 121 and the second clamping plate 122.

[0069] Specifically, the battery 71 is cylindrical, the first card plate 121 has multiple first arc-shaped surfaces 1211, the second card plate 122 has multiple second arc-shaped surfaces 1221, and the two sides of each battery 71 are respectively attached to the corresponding first arc-shaped surface 1211 and second arc-shaped surface 1221.

[0070] In one embodiment, multiple first card plates 121 are provided, and the multiple first card plates 121 are arranged at intervals in the direction perpendicular to the thickness of the outer casing 10 to increase the contact area with the individual battery 71 and improve the stability of the support; furthermore, the gap space between each pair of first card plates 121 facilitates heat dissipation of the battery 71 and reduces the weight of the outer casing 10, making the power bank 1000 have better heat dissipation and be lighter. Similarly, multiple second card plates 122 are also provided.

[0071] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A portable power bank, characterized in that, include: The outer casing has a circuit board cavity and a battery compartment cavity inside; the circuit board cavity and the battery compartment cavity are arranged adjacent to each other in a direction perpendicular to the thickness direction of the outer casing; the circuit board cavity contains a circuit board, the battery compartment cavity contains a battery pack, and the middle frame of the outer casing has a receiving groove. The first data cable includes a first wire body and a first connector connected to one end of the first wire body. The other end of the first wire body passes through the middle frame near the circuit board and is electrically connected to the circuit board. The first connector is received in the receiving groove. The first wire body protrudes at least partially from the middle frame so that the first wire body defines a hanging opening for external components to pass through. The second data line includes a second wire body and a second connector connected to one end of the second wire body. The other end of the second wire body passes through the middle frame near the circuit board and is electrically connected to the circuit board. Both the second wire body and the second connector are housed in the receiving groove.

2. The portable power bank according to claim 1, characterized in that, The receiving slot includes a first slot segment extending circumferentially along the middle frame. The first slot segment includes a first receiving portion and a first snap-fit ​​portion. The first snap-fit ​​portion is located on the side of the first receiving portion away from the other end of the first wire. The first snap-fit ​​portion communicates with the first receiving portion. The first receiving portion is used to receive part of the first wire. The first snap-fit ​​portion is used to receive the first connector. The outline of the first connector is larger than the outline of the first receiving portion.

3. The portable power bank according to claim 2, characterized in that, The receiving slot further includes a second slot segment, which includes a second receiving portion and a second snap-fit ​​portion. The second receiving portion is connected to the first snap-fit ​​portion, and the second snap-fit ​​portion is connected to the second receiving portion and is located on the side of the second receiving portion away from the first snap-fit ​​portion. The second receiving portion is used to receive the second wire, and the second snap-fit ​​portion is used to receive the second connector.

4. The portable power bank according to claim 3, characterized in that, It also includes a magnet assembly, which includes a first magnet and a second magnet. The first magnet is disposed at the first connector, and the second magnet is disposed on the side of the circuit board cavity near the receiving groove. When the first connector is received in the receiving groove, the first magnet is magnetically connected to the second magnet.

5. The portable power bank according to claim 4, characterized in that, The circuit board cavity includes a first cavity wall disposed opposite to the bottom of the receiving groove, and the first cavity wall is provided with an annular protrusion, and the second magnet is embedded in the annular protrusion.

6. The portable power bank according to any one of claims 1-5, characterized in that, The outer casing also has a through hole in the middle frame, which connects to the circuit board cavity; The power bank also includes a connection structure, which includes: Mounting bracket, the mounting bracket being at least partially extending through the through hole, so that the mounting bracket has a plug-in portion located within the circuit board cavity, the plug-in portion having a slot; An insert block is inserted into the slot such that the outer contour of the connecting structure is larger than the outer contour of the through hole.

7. The portable power bank according to claim 6, characterized in that, The insertion part includes a peripheral wall arranged circumferentially along the through hole, and the slot is disposed at the peripheral wall and is arranged around the peripheral wall.

8. The portable power bank according to claim 7, characterized in that, The mounting base also includes a shielding part connected to the plug-in part, the shielding part being installed at the through hole, and the shape of the shielding part being adapted to the shape of the through hole.

9. The portable power bank according to claim 7, characterized in that, The circuit board cavity includes a second cavity wall adjacent to the through hole; the insert includes a connecting plate and two insert arms, one end of each insert arm is connected to one side of the connecting plate, the two insert arms are inserted into both sides of the slot, the second cavity wall is provided with a snap-fit ​​protrusion, and the two insert arms are sandwiched between the snap-fit ​​protrusion and the second cavity wall.

10. The portable power bank according to any one of claims 1-5, characterized in that, The battery pack includes multiple batteries arranged in a direction perpendicular to the thickness of the outer casing. The outer casing has a first clamping plate and a second clamping plate arranged opposite each other in its thickness direction, and the multiple batteries are sandwiched between the first clamping plate and the second clamping plate.

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