Mobile power supply

Abstract

The utility model provides a mobile power supply, and belongs to the technical field of charging. The mobile power supply comprises a shell, a fixing piece, a charging wire and a charging element. The shell is provided with a containing cavity, and a mounting hole is formed in the side wall of the shell. And one end of the charging wire extends into the accommodating cavity through the mounting hole and is electrically connected with the charging element. The other end of the charging wire is located outside the shell and used for being electrically connected with electric equipment. The fixing piece is fixed in the containing cavity, the charging wire is provided with a clamping head, and the clamping head is located in the containing cavity and connected with the fixing piece in a clamped mode. Therefore, the connection strength between the charging wire and the shell is high, and it is guaranteed that the charging wire is not prone to falling off from the shell.

Description

Technical Field

[0001] This disclosure relates to the field of charging technology, and in particular to a mobile power supply. Background Technology

[0002] A power bank is a portable charger primarily used to provide emergency power to various electronic devices such as mobile phones, tablets, and wireless headphones in situations where there are no fixed power outlets.

[0003] In related technologies, a power bank includes a housing, a charging cable, and a charging element. One end of the charging cable is located inside the housing and is electrically connected to the charging element, while the other end is located outside the housing and is used to electrically connect to the device being used. To prevent the charging cable from being easily lost, one end of the charging cable is usually fixed to the inside of the housing using adhesive.

[0004] However, the charging cable in the related technology has poor fixation strength inside the housing, which makes it easy for the charging cable to fall out of the housing. Utility Model Content

[0005] This disclosure provides a portable power bank that can solve the technical problems existing in related technologies. The technical solution of the portable power bank is as follows.

[0006] This disclosure provides a portable power bank, which includes a housing, a fixing component, a charging cable, and a charging element;

[0007] The housing has a receiving cavity, and the side wall of the housing has a mounting hole. One end of the charging cable extends into the receiving cavity through the mounting hole and is electrically connected to the charging element. The other end of the charging cable is located outside the housing and is used for electrical connection with the electrical device.

[0008] The fixing member is fixed to the receiving cavity, and the charging cable has a snap-fit ​​connector, which is located in the receiving cavity and snaps into the fixing member.

[0009] In one possible implementation, the fastener has a snap-fit ​​hole with a snap-fit ​​protrusion on the inner wall of the snap-fit ​​hole, and a first snap-fit ​​groove on the outer wall of the snap-fit ​​connector. At least a portion of the snap-fit ​​connector is located in the snap-fit ​​hole, and the snap-fit ​​protrusion snaps into the first snap-fit ​​groove.

[0010] In one possible implementation, the fastener includes a first bracket and a second bracket, the first bracket and the second bracket forming the snap-fit ​​hole, and the snap-fit ​​protrusion includes a first protrusion and a second protrusion, the first protrusion being located on the first bracket and the second protrusion being located on the second bracket;

[0011] The first snap-fit ​​groove is annular, and the first protrusion and the second protrusion are arranged circumferentially along the first snap-fit ​​groove. Both the first protrusion and the second protrusion snap into the first snap-fit ​​groove.

[0012] In one possible implementation, the fastener includes a first bracket and a second bracket, the first bracket and the second bracket forming the snap-fit ​​hole, and the snap-fit ​​protrusion includes a first protrusion and a second protrusion, the first protrusion being located on the first bracket and the second protrusion being located on the second bracket;

[0013] The outer wall of the snap-fit ​​connector has two first snap-fit ​​grooves, which respectively snap into the first protrusion and the second protrusion.

[0014] In one possible implementation, the second support has a third protrusion;

[0015] The outer wall of the snap-fit ​​connector also has a second snap-fit ​​groove, and the third protrusion snaps into the second snap-fit ​​groove.

[0016] In one possible implementation, the housing includes a bottom shell and a cover plate;

[0017] The receiving cavity is formed between the bottom shell and the cover plate, the mounting hole is located in the bottom shell, the first bracket is fixed to the bottom shell, and the first bracket is located between the bottom shell and the second bracket.

[0018] In one possible implementation, the distance between the first protrusion and the mounting hole is 8mm-10mm.

[0019] In one possible implementation, the first bracket and the second bracket are connected by bolts, the axial direction of which is along a first direction, wherein the first direction is the direction in which the cover plate points toward the bottom shell.

[0020] In one possible implementation, the first support includes a support body and at least two columns, the columns being fixed to the support body, the first protrusion being located on the support body, the at least two columns being distributed on both sides of the first protrusion, and the columns having threaded holes.

[0021] The second bracket has at least two receiving slots, each of the columns is located in one of the receiving slots, the sidewall of the receiving slot has a through hole, the bolt passes through the through hole and is threadedly connected to the threaded hole.

[0022] In one possible implementation, the outer wall of the connector also has a snap fastener;

[0023] The buckle is located between the fixing member and the inner wall of the housing, and the buckle engages with the inner wall of the housing.

[0024] In one possible implementation, the height of the buckle gradually decreases along the direction close to the fastener.

[0025] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0026] This disclosure provides a portable power bank in which the charging cable is snapped into place by a connector and a fixing member, thereby securing the connector within a receiving cavity. This provides a high connection strength between the charging cable and the housing, ensuring that the charging cable is not easily detached from the housing.

[0027] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings:

[0029] Figure 1 This is a schematic diagram of the structure of a mobile power bank shown in an embodiment of this disclosure;

[0030] Figure 2 This is a schematic diagram of the structure of a mobile power bank shown in an embodiment of this disclosure;

[0031] Figure 3 This is an exploded view of a portable power bank shown in an embodiment of this disclosure;

[0032] Figure 4 This is an assembly diagram of a fastener and a charging cable shown in an embodiment of this disclosure;

[0033] Figure 5 This is a schematic diagram of the structure of a snap-fit ​​connector shown in an embodiment of the present disclosure;

[0034] Figure 6 This is a cross-sectional view of a fastener and charging cable shown in an embodiment of this disclosure;

[0035] Figure 7 This is an exploded view of a fastener and charging cable shown in an embodiment of this disclosure;

[0036] Figure 8 This is a schematic diagram of the structure of a first support shown in an embodiment of this disclosure;

[0037] Figure 9 This is a schematic diagram of the structure of a second support shown in an embodiment of this disclosure;

[0038] Figure 10 This is a schematic diagram of the structure of a mobile power supply shown in an embodiment of this disclosure.

[0039] Legend:

[0040] 1. Housing; 1a. Mounting hole; 10. Receiving cavity; 11. Bottom shell; 12. Cover plate;

[0041] 2. Fastener, 20. Snap-fit ​​hole, 21. First snap-fit ​​protrusion, 211. First protrusion, 212. Second protrusion, 201. First bracket, 2011. Bracket body, 2012. Column, 2012a. Threaded hole, 202. Second bracket, 202a. Third protrusion, 2021. Receiving groove, 2021a. Through hole;

[0042] 3. Charging cable; 3a. Card connector; 31. First card slot; 32. Second card slot; 33. Clip;

[0043] 4. Bolts.

[0044] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.

[0046] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0047] A power bank is a portable charger primarily used to provide emergency power to various electronic devices such as mobile phones, tablets, and wireless headphones in situations where there are no fixed power outlets.

[0048] In related technologies, a power bank includes a housing, a charging cable, and a charging element. One end of the charging cable is located inside the housing and is electrically connected to the charging element, while the other end is located outside the housing and is used to electrically connect to the device being used. To prevent the charging cable from being easily lost, one end of the charging cable is usually fixed to the inside of the housing using adhesive.

[0049] However, the charging cable in the related technology has poor fixation strength inside the housing, which makes it easy for the charging cable to fall out of the housing.

[0050] In view of the above-mentioned technical problems, embodiments of this disclosure provide a portable power supply, such as... Figures 1-4 As shown, the power bank includes a housing 1, a fixing member 2, a charging cable 3, and a charging element. The housing 1 has a receiving cavity 10, and the side wall of the housing 1 has a mounting hole 1a. One end of the charging cable 3 extends into the receiving cavity 10 through the mounting hole 1a and is electrically connected to the charging element. The other end of the charging cable 3 is located outside the housing 1 and is used for electrical connection to a device. The fixing member 2 is fixed to the receiving cavity 10, and the charging cable 3 has a snap-fit ​​connector 3a, which is located in the receiving cavity 10 and snaps into the inner wall of the fixing member 2.

[0051] The charging components include components such as battery cells and circuit boards. The charging cable 3 is electrically connected to the circuit board and battery cells, thereby drawing power from the battery cells to charge the electrical equipment.

[0052] The technical solution provided in this embodiment of the invention involves a charging cable 3 being snapped into place by a connector 3a and a fixing member 2, thereby securing the connector 3a within the receiving cavity 10. This ensures a high connection strength between the charging cable 3 and the housing 1, preventing the charging cable 3 from easily detaching from the housing 1.

[0053] The following is an exemplary description of how the fastener 2 and the charging cable 3 are connected.

[0054] In some examples, such as Figures 3-6 As shown, the fastener 2 has a snap-fit ​​hole 20, the inner wall of which has a snap-fit ​​protrusion 21, and the outer wall of the snap-fit ​​connector 3a has a first snap-fit ​​groove 31. At least a portion of the snap-fit ​​connector 3a is located in the snap-fit ​​hole 20, and the snap-fit ​​protrusion 21 engages with the first snap-fit ​​groove 31. This allows the snap-fit ​​connector 3a to pass smoothly through the mounting hole 1a. The snap-fit ​​hole 20 further positions the snap-fit ​​connector 3a and increases the contact area between the snap-fit ​​connector 3a and the fastener 2, ensuring that the snap-fit ​​connector 3a is less prone to wobbling within the fastener 2. Furthermore, the location of the first snap-fit ​​groove 31 on the snap-fit ​​connector 3a facilitates the smooth insertion of the snap-fit ​​connector 3a into the snap-fit ​​hole 20.

[0055] Alternatively, in other examples, the sidewall of the snap-fit ​​hole 20 may have a snap-fit ​​groove, and the outer wall of the snap-fit ​​connector 3a may have a snap-fit ​​protrusion, thereby snapping the snap-fit ​​connector 3a into the fastener 2.

[0056] In some examples, such as Figures 3-5 As shown, the fastener 2 includes a first bracket 201 and a second bracket 202, which together form a snap-fit ​​hole 20. The snap-fit ​​protrusion 21 includes a first protrusion 211 and a second protrusion 212, with the first protrusion 211 located on the first bracket 201 and the second protrusion 212 located on the second bracket 202.

[0057] The first snap-fit ​​groove 31 is annular, and the first protrusion 211 and the second protrusion 212 are arranged circumferentially along the first snap-fit ​​groove 31, both engaging with the first snap-fit ​​groove 31. This design ensures a strong engagement between the snap-fit ​​connector 3a and the snap-fit ​​hole 20, making it less likely for the snap-fit ​​connector 3a to detach from the snap-fit ​​hole 20. Furthermore, by making the first snap-fit ​​groove 31 annular, only one annular hole needs to be machined on the snap-fit ​​connector 3a, simplifying the manufacturing process.

[0058] In other examples, the outer wall of the snap-fit ​​connector 3a may also have two first snap-fit ​​grooves 31, which respectively snap into the first protrusion 211 and the second protrusion 212. The two first snap-fit ​​grooves 31 may be arranged circumferentially around the snap-fit ​​connector 3a, and correspondingly, the first protrusion 211 and the second protrusion 212 may also be arranged circumferentially around the snap-fit ​​connector 3a. Alternatively, the sidewalls of the two first snap-fit ​​grooves 31 may not be on the same plane, that is, the two first snap-fit ​​grooves 31 may not be arranged circumferentially around the snap-fit ​​connector 3a.

[0059] In this embodiment, the specific arrangement of the first protrusion 211 and the second protrusion 212 is not limited. For example, if the first protrusion 211 is located on the first side wall of the first support 201 and the second protrusion 212 is located on the second side wall of the second support, then the first side wall and the second side wall can be adjacent or opposite to each other.

[0060] It is understandable that both the first bracket 201 and the second bracket 202 may have grooves, and the two grooves form a snap-fit ​​hole 20. Alternatively, one of the first bracket 201 and the second bracket 202 may have a groove, and the other bracket may block the opening of the groove, thereby forming a snap-fit ​​hole 20.

[0061] In some examples, such as Figures 5-7 As shown, the second bracket 202 has a third protrusion 202a. The outer wall of the connector 3a also has a second snap-fit ​​groove 32, and the third protrusion 202a snaps into the second snap-fit ​​groove 32. This further enhances the connection strength between the connector 3a and the second bracket 202. Even if the snap-fit ​​between the first protrusion 211, the second protrusion 212 and the first snap-fit ​​groove 31 fails, the third protrusion 202a and the second snap-fit ​​groove 32 can still keep the connector 3a snapped into the snap-fit ​​hole 20. This makes it difficult for the charging cable 3 to fall out of the housing 1.

[0062] For example, the third protrusion 202a is located between the second protrusion 212 and the mounting hole 1a.

[0063] In some examples, such as Figure 3 As shown, the housing 1 includes a bottom shell 11 and a cover plate 12. A receiving cavity 10 is formed between the bottom shell 11 and the cover plate 12, and a mounting hole 1a is located in the bottom shell 11. A first bracket 201 is fixed to the bottom shell 11, and the first bracket 201 is located between the bottom shell 11 and the second bracket 202.

[0064] When assembling the power bank, first, pass the connector 3a of the charging cable 3 through the mounting hole 1a, thus extending it into the interior of the bottom shell 11. Simultaneously, allow the first protrusion 211 of the first bracket 201 to extend into the first latching groove 31 of the connector 3a. Then, connect the second bracket 202 to the first bracket 201, allowing the second protrusion 212 of the second bracket 202 to extend into the first latching groove 31, and the third protrusion 202a of the second bracket 202 to extend into the second latching groove 32. Finally, connect the cover plate 12 and the bottom shell 11. This simplifies the assembly process of the power bank and makes it easier to latch the charging cable 3 into the latching hole 20.

[0065] When installing the charging cable 3, after the connector 3a passes through the mounting hole 1a, its end is stopped by the first protrusion 211. If the distance between the first protrusion 211 and the mounting hole 1a is too close, the connector 3a will be blocked by the first protrusion 211 when its insertion length into the receiving cavity 10 is small, making it difficult for the connector 3a to continue extending into the receiving cavity 10. Therefore, in some examples, the distance between the first protrusion 211 and the mounting hole 1a is 8mm-10mm. In this way, the distance between the first protrusion 211 and the mounting hole 1a is relatively large, and the connector will only be blocked by the first protrusion 211 when its insertion length into the receiving cavity 10 is large. At this point, the snap-fit ​​connector 3a can be deflected in the direction close to the cover plate 12, so that the snap-fit ​​connector 3a is no longer blocked by the first protrusion 211. That is, the first protrusion 211 will not obstruct the snap-fit ​​connector 3a from entering the receiving cavity 10, thereby allowing the end of the snap-fit ​​connector 3a to pass over the first protrusion 211, and then allowing the first protrusion 211 to engage with the first snap-fit ​​groove 31. Therefore, setting the distance between the first protrusion 211 and the mounting hole 1a to 8mm-10mm allows the first protrusion 211 to smoothly enter the receiving cavity 10 without making the length of the first protrusion 211 extending into the receiving cavity 10 too long, thus increasing the assembly time. This helps to improve assembly efficiency.

[0066] It is understood that since the snap-fit ​​connector 3a is snapped into the first bracket 201 before the second bracket 202 is installed, the second protrusion 212 and the third protrusion 202a on the second bracket 202 will not obstruct the installation of the snap-fit ​​connector 3a. Therefore, this embodiment does not specifically limit the distance between the second protrusion 212, the third protrusion 202a and the mounting hole 1a.

[0067] In some examples, such as Figure 3 and Figure 4As shown, the first bracket 201 and the second bracket 202 are connected by bolts 4, with the axial direction of the bolts 4 along a first direction, where the first direction is the direction from the cover plate 12 to the bottom shell 11. This ensures a high connection strength between the first bracket 201 and the second bracket 202, guaranteeing that the first bracket 201 and the second bracket 202 can clamp the connector 3a, thus preventing the connector 3a from easily detaching from the shell 1. The clamping degree of the first bracket 201 and the second bracket 202 on the connector 3a can be adjusted by adjusting the tightening of the bolts 4.

[0068] Furthermore, the first bracket 201 and the second bracket 202 are connected by bolts 4, which facilitates the disassembly of the first bracket 201 and the second bracket 202. When the charging cable 3 malfunctions, it can be removed by loosening the bolts 4, making it easy to replace or repair the charging cable 3.

[0069] In some examples, such as Figure 8 and Figure 9 As shown, the first bracket 201 includes a bracket body 2011 and at least two columns 2012. The columns 2012 are fixed to the bracket body 2011. A first protrusion 211 is located on the bracket body 2011, and the at least two columns 2012 are distributed on both sides of the first protrusion 211. Each column 2012 has a threaded hole 2012a. The second bracket 202 has at least two receiving grooves 2021, with each column 2012 located in one receiving groove 2021. The sidewall of the receiving groove 2021 has a through hole 2021a, through which a bolt 4 passes and is threadedly connected to the threaded hole 2012a.

[0070] In this way, the shank of bolt 4 and the column 2012 of the second bracket 202 have a large connection area, resulting in a high connection strength between bolt 4 and the second bracket 202. Therefore, the head of bolt 4 and the first bracket 201 can clamp the second bracket 202, resulting in a high connection strength between the first bracket 201 and the second bracket 202. This, in turn, allows the first bracket 201 and the second bracket 202 to clamp the snap-fit ​​connector 3a, thereby strengthening the snap-fit ​​strength between the fixing member 2 and the charging cable 3, making it less likely for the charging cable 3 to fall out of the snap-fit ​​hole 20.

[0071] In some examples, such as Figure 8 As shown, the outer wall of the column 2012 has reinforcing ribs 2012b. This improves the structural strength of the column 2012, making it less prone to breakage when connected to the bolt 4. This ensures the connection strength between the first bracket 201 and the second bracket 202, so that the first bracket 201 and the second bracket 202 can always clamp the connector 3a.

[0072] This disclosure does not specifically limit the connection method of the first bracket 201 and the second bracket 202. The first bracket 201 and the second bracket 202 can also be fixedly connected by riveting, adhesive, or other methods.

[0073] To further prevent the charging cable 3 from detaching from the housing 1, the charging cable 3 is also secured to the housing 1. For example... Figure 7 and Figure 10 As shown, the outer wall of the snap-fit ​​connector 3a also has a snap-fit ​​33. The snap-fit ​​33 is located between the fixing member 2 and the inner wall of the housing 1, and the snap-fit ​​33 is engaged with the inner wall of the housing 1. In this way, when the engagement between the snap-fit ​​connector 3a and the fixing member 2 fails, the snap-fit ​​connector 3a can still be engaged with the housing 1, making it difficult for the snap-fit ​​connector 3a to fall out of the receiving cavity 10.

[0074] For example, such as Figure 5 As shown, the height of the latch 33 gradually decreases along the direction close to the fixing member 2. That is, the sidewall of the latch 33 is inclined. When the latch connector 3a passes through the mounting hole 1a, the sidewall of the latch 33 abuts against the inside of the mounting hole 1a, and the latch 33 gradually squeezes the mounting hole 1a, eventually allowing the latch 33 to pass over the mounting hole 1a, thereby making the latch 33 engage with the inner wall of the housing 1. In this way, the latch 33 can smoothly enter the receiving cavity 10 and is not easily pulled out of the receiving cavity 10.

[0075] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A mobile power supply, characterized by, The mobile power supply comprises a shell (1), a fixing member (2), a charging wire (3) and a charging element; The shell (1) has a containing cavity (10), a side wall of the shell (1) has a mounting hole (1a), one end of the charging wire (3) extends into the containing cavity (10) through the mounting hole (1a) and is electrically connected with the charging element, and the other end of the charging wire (3) is located outside the shell (1) and is used for being electrically connected with an electric device. The fixing member (2) is fixed to the containing cavity (10), and the charging wire (3) has a clamping joint (3a) located in the containing cavity (10) and clamped with the fixing member (2).

2. The mobile power source of claim 1, wherein, The fixing member (2) has a clamping hole (20), an inner wall of the clamping hole (20) has a clamping protrusion (21), an outer wall of the clamping joint (3a) has a first clamping groove (31), and at least part of the clamping joint (3a) is located in the clamping hole (20), and the clamping protrusion (21) is clamped with the first clamping groove (31).

3. The mobile power source of claim 2, wherein, The fixing member (2) comprises a first support (201) and a second support (202), the first support (201) and the second support (202) enclose the clamping hole (20), the clamping protrusion (21) comprises a first protrusion (211) and a second protrusion (212), the first protrusion (211) is located in the first support (201), and the second protrusion (212) is located in the second support (202). The first clamping groove (31) is annular, the first protrusion (211) and the second protrusion (212) are arranged along a circumferential direction of the first clamping groove (31), and the first protrusion (211) and the second protrusion (212) are clamped with the first clamping groove (31).

4. The mobile power source of claim 2, wherein, The fixing member (2) comprises a first support (201) and a second support (202), the first support (201) and the second support (202) enclose the clamping hole (20), the clamping protrusion (21) comprises a first protrusion (211) and a second protrusion (212), the first protrusion (211) is located in the first support (201), and the second protrusion (212) is located in the second support (202). The outer wall of the clamping joint (3a) has two first clamping grooves (31), and the two first clamping grooves (31) are clamped with the first protrusion (211) and the second protrusion (212) respectively.

5. The mobile power source of claim 4, wherein, The second support (202) has a third protrusion (202a); The outer wall of the clamping joint (3a) further has a second clamping groove (32), and the third protrusion (202a) is clamped with the second clamping groove (32).

6. The mobile power source of claim 4, wherein, The shell (1) comprises a bottom shell (11) and a cover plate (12). The accommodating cavity (10) is formed between the bottom shell (11) and the cover plate (12), the mounting hole (1a) is located on the bottom shell (11), the first support (201) is fixed to the bottom shell (11), and the first support (201) is located between the bottom shell (11) and the second support (202).

7. The mobile power source of claim 6, wherein, The distance between the first protrusion (211) and the mounting hole (1a) is 8-10 mm.

8. The mobile power source of claim 6, wherein, The first support (201) and the second support (202) are connected by a bolt (4), the axial direction of the bolt (4) is a first direction, and the first direction is a direction in which the cover plate (12) points to the bottom shell (11).

9. The mobile power source of claim 8, wherein, The first support (201) comprises a support body (2011) and at least two column bodies (2012), the column bodies (2012) are fixed to the support body (2011), the first protrusion (211) is located on the support body (2011), the at least two column bodies (2012) are distributed on both sides of the first protrusion (211), and the column bodies (2012) are provided with threaded holes (2012a). The second support (202) is provided with at least two accommodating grooves (2021), each column body (2012) is located in one accommodating groove (2021), the side wall of the accommodating groove (2021) is provided with a through hole (2021a), the bolt (4) penetrates through the through hole (2021a) and is screwed with the threaded hole (2012a).

10. The mobile power source of any of claims 1-9, wherein, The outer wall of the clamping joint (3a) is further provided with a buckle (33). The buckle (33) is located between the fixing part (2) and the inner wall of the shell (1), and the buckle (33) is clamped with the inner wall of the shell (1).

11. The mobile power source of claim 10, wherein, In the direction close to the fixing part (2), the height of the buckle (33) gradually decreases.

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