Hole plug, power supply shell assembly and portable power supply

Abstract

The utility model provides a hole plug, a power supply shell assembly and a portable power supply. The hole plug comprises an elastic plug body, and at least part of the elastic plug body is used for being arranged in a mounting hole of a power supply shell body. The peripheral wall of the elastic plug body is used for abutting against the hole wall of the mounting hole so that the elastic plug body can be assembled in the mounting hole in an interference mode. A pressure relief air passage is formed in the elastic plug body; the first end face of the elastic plug body is located in the mounting hole and used for being arranged close to a locking piece assembled in the mounting hole. The edge of the second end face of the elastic plug body is used for being matched with the outline of the outer edge of the mounting hole. The first end of the pressure relief air channel extends to the first end face of the elastic plug body. And the second end of the pressure relief air passage extends to the second end face of the elastic plug body and is communicated with the outside, so that air trapped in the mounting hole can be discharged out of the pressure relief air passage, the counter-acting force of the air to the elastic plug body is reduced, and the hole plug can be assembled in the mounting hole more firmly for a long time.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of new energy energy storage devices, and particularly relates to a hole plug, a power supply shell assembly and a portable power supply. BACKGROUND

[0002] In order to improve the packaging strength of the energy storage battery pack, the shell of most portable power supplies is connected by using locking accessories such as screws, bolts or buckles, which makes the shell of the energy storage device need to be provided with a large number of mounting holes. After the locking accessories are mounted in the mounting holes, the mounting holes are still in a bare state, which not only makes dust and moisture easily enter the mounting holes, but also affects the external appearance of the portable power supply. In order to solve the above problems, most manufacturers use the method of filling hole plugs in the mounting holes. Due to the design of the hole plug structure, the air is trapped in the mounting hole after the hole plug is inserted into the mounting hole, and the trapped air is extruded by the hole plug to form air pressure. The air pressure continuously acts on the hole plug during use, which easily causes the hole plug to loosen, fall off and even be lost. CONTENT OF THE UTILITY MODEL

[0003] The present disclosure aims to overcome the deficiencies in the prior art and provide a hole plug, a power supply shell assembly and a portable power supply which are not easy to fall off and are firmly installed.

[0004] The purpose of the present disclosure is achieved by the following technical solutions:

[0005] A hole plug comprises an elastic plug body, at least a part of the elastic plug body is arranged in a mounting hole of a power supply shell main body, a peripheral wall of the elastic plug body is used to abut against a hole wall of the mounting hole, so that the elastic plug body is interference-fitted in the mounting hole;

[0006] A pressure relief air channel is formed in the elastic plug body;

[0007] A first end surface of the elastic plug body is located in the mounting hole and is used to be arranged close to a locking accessory fitted in the mounting hole; an edge of a second end surface of the elastic plug body is used to adapt to the outer edge profile of the mounting hole; a first end of the pressure relief air channel extends to the first end surface of the elastic plug body; a second end of the pressure relief air channel extends to the second end surface of the elastic plug body and is in communication with the outside.

[0008] In some embodiments, the pressure relief air channel extends along the axial direction of the elastic plug body; and / or,

[0009] The width of the pressure relief air channel gradually increases from the first end surface of the elastic plug body to the second end surface of the elastic plug body; and / or,

[0010] The pressure relief air channel is formed in the peripheral wall of the elastic plug body; and / or,

[0011] The interference amount of the elastic plug body and the mounting hole is 0.05mm to 0.1mm.

[0012] In some embodiments, a first positioning structure is arranged on the outer peripheral wall of the elastic plug body, and is arranged opposite to a second positioning structure on the hole wall of the mounting hole.

[0013] In some embodiments, the first positioning structure is a limiting groove, and the limiting groove is used for clamping cooperation with a limiting block on the hole wall of the mounting hole.

[0014] In some embodiments, the entrance of the limiting groove is arranged towards a locking member assembled in the mounting hole, and the width of the limiting groove gradually decreases from the entrance to the second end surface of the elastic plug body.

[0015] In some embodiments, the first positioning structure is a limiting protrusion, and the limiting protrusion is used for clamping cooperation with a limiting clamping groove on the hole wall of the mounting hole.

[0016] In some embodiments, a convex rib is formed on the first end surface of the elastic plug body, and a region surrounded by the convex rib on the first end surface forms a clearance area; the clearance area is arranged opposite to a locking member assembled in the mounting hole; and / or,

[0017] A first matching mark is arranged on the first end surface of the elastic plug body, and the first matching mark is used for matching a second matching mark in the mounting hole; and / or,

[0018] A parting line is arranged on the outer peripheral wall of the elastic plug body.

[0019] A power supply shell assembly includes a power supply shell body, a locking member, and a hole plug according to any one of the above embodiments; the power supply shell body is provided with a mounting hole, the locking member is assembled with the mounting hole, and the elastic plug body is arranged in the mounting hole; the peripheral wall of the elastic plug body abuts against the hole wall of the mounting hole, so that the elastic plug body is interference-fitted in the mounting hole.

[0020] In some embodiments, the power supply shell assembly further includes a foot pad arranged at the bottom of the power supply shell body.

[0021] A portable power supply includes a battery cell module and a power supply shell assembly according to any one of the above embodiments; the battery cell module is arranged in the power supply shell body.

[0022] Compared with the prior art, the present disclosure has at least the following advantages:

[0023] After the lock fitting is assembled in the mounting hole, by setting at least part of the elastic plug body in the mounting hole of the power supply shell body, at this time, since the edge of the second end face of the elastic plug body and the outer edge profile of the mounting hole are mutually adapted, the dust and moisture from the outside can be better blocked through the second end face. At the same time, since the peripheral wall of the elastic plug body abuts against the hole wall of the mounting hole, the pressure relief air channel is provided on the elastic plug body, with the first end face of the elastic plug body gradually approaching the lock fitting, the first end face of the elastic plug body can exert pressure on the air in the mounting hole, the air enters the pressure relief air channel through the first end of the pressure relief air channel extending to the first end face of the elastic plug body, and is finally discharged to the outside through the second end of the pressure relief air channel extending to the second end face of the elastic plug body. In this way, the amount of air trapped in the mounting hole will be greatly reduced, thereby synchronously reducing the reaction force of the air on the elastic plug body, and further making the hole plug be able to be more reliably and long-term assembled in the mounting hole, and finally reducing the situation that the hole plug is detached from the mounting hole or even lost. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present disclosure, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 Structure diagram of the hole plug of an embodiment of the present disclosure;

[0026] Figure 2 Structure diagram of the hole plug of an embodiment of the present disclosure; Figure 1 Disassembly state diagram of the hole plug and the power supply shell body shown in the embodiment of the present disclosure;

[0027] Figure 3 Structure sectional view of the power supply shell assembly of another embodiment of the present disclosure;

[0028] Figure 4 Structure sectional view of the power supply shell assembly of another embodiment of the present disclosure; Figure 3 Enlarged view of A shown in the embodiment of the present disclosure.

[0029] Reference signs:

[0030] 100, hole plug; 110, elastic plug body; 1110, first end face; 1111, convex rib; 1112, air avoiding area; 1113, first pairing mark; 1120, second end face; 101, pressure relief air channel; 102, limiting groove; 1130, parting line of mold;

[0031] 200, power supply shell body; 210, mounting hole; 2110, limiting block; 2120, second pairing mark;

[0032] 300, locking member;

[0033] 400, foot pad. DETAILED DESCRIPTION

[0034] For the purpose of clarity, the present disclosure will be described with reference to the accompanying drawings. The preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art.

[0035] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for illustration only and do not indicate the only orientation of the embodiments.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0037] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure will be further described in detail below in combination with specific embodiments:

[0038] Please refer to Figure 1 With Figure 2 In one embodiment, the plug 100 includes an elastic plug body 110, at least a portion of the elastic plug body 110 is arranged in the mounting hole 210 of the power supply shell body 200; the peripheral wall of the elastic plug body 110 is used to abut against the hole wall of the mounting hole 210, so that the elastic plug body 110 is interference-fitted in the mounting hole 210; a pressure relief air passage 101 is formed on the elastic plug body 110; the first end surface 1110 of the elastic plug body 110 is located in the mounting hole 210 and is used to be arranged close to the locking member 300 fitted in the mounting hole 210; the edge of the second end surface 1120 of the elastic plug body 110 is used to adapt to the outer edge contour of the mounting hole 210; the first end of the pressure relief air passage 101 extends to the first end surface 1110 of the elastic plug body 110; the second end of the pressure relief air passage 101 extends to the second end surface 1120 of the elastic plug body 110 and is in communication with the outside.

[0039] It can be understood that after the lock piece 300 is assembled in the mounting hole 210, at least part of the elastic plug body 110 is arranged in the mounting hole 210 of the power supply shell body 200, at this time, since the edge of the second end face 1120 of the elastic plug body 110 and the outer edge profile of the mounting hole 210 are matched with each other, the dust and moisture from the outside can be better blocked by the second end face 1120. At the same time, since the peripheral wall of the elastic plug body 110 abuts against the hole wall of the mounting hole 210, the pressure relief air channel 101 is provided on the elastic plug body 110, as the first end face 1110 of the elastic plug body 110 gradually approaches the lock piece 300, the first end face 1110 of the elastic plug body 110 can exert pressure on the air in the mounting hole 210, the air enters the pressure relief air channel 101 through the first end of the pressure relief air channel 101 extending to the first end face 1110 of the elastic plug body 110, and is finally discharged to the outside through the second end of the pressure relief air channel 101 extending to the second end face 1120 of the elastic plug body 110. In this way, the amount of air trapped in the mounting hole 210 will be greatly reduced, thereby synchronously reducing the reaction force of the air on the elastic plug body 110, and further making the above-mentioned hole plug 100 more firmly and long-term assembled in the mounting hole 210, and finally reducing the situation that the hole plug 100 is detached from the mounting hole 210 or even lost.

[0040] Please refer to Figure 1 In some embodiments, the pressure relief air channel 101 is provided on the outer peripheral wall of the elastic plug body 110. It can be understood that by providing the pressure relief air channel 101 on the outer peripheral wall of the elastic plug body 110, the processing and forming of the hole plug 100 can be more convenient. Specifically, the elastic plug body 110 is a soft rubber plug body, such as a rubber plug body, a silica gel plug body, etc., which is not limited here, and other materials of the plug body can also be selected by those skilled in the art according to needs, and the pressure relief air channel 101 is a communication groove formed on the outer peripheral wall of the elastic plug body 110. After the elastic plug body 110 is arranged in the mounting hole 210, the outer peripheral wall of the elastic plug body 110 tightly abuts against the hole wall of the mounting hole 210, and a gap is formed between the communication groove and the hole wall of the mounting hole 210, which not only can discharge the air trapped in the mounting hole 210, but also can be inserted by a dismounting tool, so that the dismounting tool can quickly lift the soft rubber plug body out of the mounting hole 210 from one side, and finally increase the dismounting convenience of the hole plug 100 of the present disclosure.

[0041] Please refer to Figure 3 With Figure 4In some embodiments, the edge of the second end surface 1120 of the elastic plug body 110 is flush with the outer edge profile of the mounting hole 210 to improve the fit of the edge of the second end surface 1120 of the elastic plug body 110 with the outer edge profile of the mounting hole 210. In other embodiments, the elastic plug body 110 has an interference with the mounting hole 210 of 0.05mm to 0.1mm, which ensures that the elastic plug body 110 is firmly installed in the mounting hole 210 while also ensuring that the elastic plug body 110 is better removed.

[0042] Please refer to Figure 1 In some embodiments, the pressure relief air channel 101 extends along the axial direction of the elastic plug body 110. It can be understood that, since the pressure relief air channel 101 extends along the axial direction of the elastic plug body 110, the air in the mounting hole 210 under pressure can be directly discharged along the axial direction of the elastic plug body 110 through the pressure relief air channel 101, thereby improving the air discharge efficiency of the hole plug 100.

[0043] Please refer to Figure 1 In some embodiments, the width of the pressure relief air channel 101 gradually increases from the first end surface 1110 of the elastic plug body 110 to the second end surface 1120 of the elastic plug body 110. It can be understood that, since the width of the pressure relief air channel 101 gradually increases from the first end surface 1110 of the elastic plug body 110 to the second end surface 1120 of the elastic plug body 110, the first end surface 1110 of the elastic plug body 110 can better pressurize the air in the mounting hole 210, and after the air is pressurized, the air can flow more quickly to the second end surface 1120 of the elastic plug body 110 and be quickly relieved along with the gradual increase in the width of the pressure relief air channel 101, so that the air is discharged more smoothly.

[0044] In some embodiments, the outer peripheral wall of the elastic plug body 110 is provided with a first positioning structure, and the first positioning structure is arranged opposite to a second positioning structure on the hole wall of the mounting hole 210. It can be understood that, when the hole plug 100 is installed, the first positioning structure and the second positioning structure are arranged in a position corresponding relationship, so that the elastic plug body 110 is arranged in the mounting hole 210 in a predetermined manner. In this embodiment, the first positioning structure on the outer peripheral wall of the elastic plug body 110 and the second positioning structure on the hole wall of the mounting hole 210 are in concave-convex cooperation to form interference, so as to prevent the elastic plug body 110 from being twisted and deviated in the mounting hole 210 subsequently.

[0045] In this embodiment, the first positioning structure on the outer peripheral wall of the elastic plug body 110 and the second positioning structure on the hole wall of the mounting hole 210 are in concave-convex cooperation to form interference, so as to prevent the elastic plug body 110 from being twisted and deviated in the mounting hole 210 subsequently.

[0046] Please refer to Figure 2 and Figure 4In some embodiments, the first alignment structure is a limiting groove 102, which is used to be engaged with a limiting block 2110 on the hole wall of the mounting hole 210. It can be understood that by engaging the limiting groove 102 with the limiting block 2110 on the hole wall of the mounting hole 210, an interference is formed between the elastic plug body 110 and the hole wall of the mounting hole 210, so as to prevent the elastic plug body 110 from being twisted and deviated in the mounting hole 210 subsequently.

[0047] Please refer to Figure 1 and Figure 2 In the present embodiment, the entrance of the limiting groove 102 is arranged towards the locking member 300 assembled in the mounting hole 210, and the width of the limiting groove 102 gradually decreases from the entrance to the second end surface 1120 of the elastic plug body 110. It can be understood that since the entrance of the limiting groove 102 is arranged towards the locking member 300 assembled in the mounting hole 210, when the elastic plug body 110 moves towards the locking member 300 to be assembled in the mounting hole 210, the limiting block 2110 on the hole wall of the mounting hole 210 can quickly enter the limiting groove 102 through the entrance, and since the width of the limiting groove 102 gradually decreases from the entrance to the second end surface 1120 of the elastic plug body 110, as the elastic plug body 110 continuously extends, the groove wall of the limiting groove 102 can form a close fitting structure with the limiting block 2110, which can further reduce the situation that the elastic plug body 110 is pulled out of the mounting hole 210.

[0048] In other embodiments, the first alignment structure is a limiting protrusion, which is used to be engaged with a limiting clamping groove on the hole wall of the mounting hole 210. It can be understood that by engaging the limiting protrusion with the limiting clamping groove on the hole wall of the mounting hole 210, an interference is formed between the elastic plug body 110 and the hole wall of the mounting hole 210, so as to prevent the elastic plug body 110 from being twisted and deviated in the mounting hole 210 subsequently. It should be particularly pointed out that the concave-convex fitting relationship between the first alignment structure and the second alignment structure can also be in other ways, which is only used as an example here and does not limit the specific disclosure of the plug 100.

[0049] Please refer to Figure 1 and Figure 4In some embodiments, a protrusion 1111 is formed on the first end surface 1110 of the elastic plug body 110, and the area surrounded by the protrusion 1111 on the first end surface 1110 forms a clearance area 1112. The clearance area 1112 is arranged opposite to the locking member 300 assembled in the mounting hole 210. It can be understood that, since the area surrounded by the protrusion 1111 on the first end surface 1110 forms the clearance area 1112, after the elastic plug body 110 is placed in the mounting hole 210, the locking member 300 is partially located in the clearance area 1112, so as to reduce the interference between the elastic plug body 110 and the locking member 300. In the present embodiment, the protrusion 1111 is arranged in a ring shape and surrounds the outer periphery of the locking member 300 assembled in the mounting hole 210. It can be understood that, since the protrusion 1111 surrounds the outer periphery of the locking member 300 assembled in the mounting hole 210, the locking member 300 can be separated from the structure on the power shell body 200 located at the outer periphery of the locking member 300 by the protrusion 1111, so as to further reduce the interference on the locking member 300.

[0050] Please refer to Figure 1 and Figure 2 In some embodiments, a first matching mark 1113 is arranged on the first end surface 1110 of the elastic plug body 110, and the first matching mark 1113 is matched with a second matching mark 2120 in the mounting hole 210. It can be understood that, by matching the first matching mark 1113 on the first end surface 1110 of the elastic plug body 110 with the second matching mark 2120 in the mounting hole 210, the elastic plug body 110 can be arranged in the corresponding mounting hole 210, so as to prevent the elastic plug body 110 from being misassembled, thereby finally playing a foolproof role. In the present embodiment, the first matching mark 1113 and the second matching mark 2120 can be the same number or letter, and of course, the present disclosure is not limited thereto, and other settings can be made by those skilled in the art as needed.

[0051] Please refer to Figure 1 In some embodiments, a parting line 1130 is arranged on the outer peripheral wall of the elastic plug body 110. It can be understood that, since the parting line 1130 is arranged on the outer peripheral wall of the elastic plug body 110, when the elastic plug body 110 is formed by mold closing, the parting line 1130 is the mold closing line of the upper mold and the lower mold, that is, the burr is formed on the outer peripheral wall of the elastic plug body 110 after the upper mold and the lower mold are opened, that is, the burr can be well hidden in the mounting hole 210 after the elastic plug body 110 is assembled into the mounting hole 210, so as to ensure that the edge of the second end surface 1120 of the elastic plug body 110 is clear, thereby more accurately fitting the outer edge profile of the mounting hole 210.

[0052] Please refer to Figure 3 and Figure 4The power supply shell assembly further comprises a power supply shell body 200, a locking piece 300, and the hole plug 100 of any one of the above embodiments. The power supply shell body 200 is provided with a mounting hole 210, the locking piece 300 is assembled with the mounting hole 210, and the elastic plug body 110 is arranged in the mounting hole 210. The peripheral wall of the elastic plug body 110 abuts against the hole wall of the mounting hole 210, so that the elastic plug body 110 is assembled in the mounting hole 210 in an interference fit. It can be understood that after the locking piece 300 is assembled in the mounting hole 210, at least part of the elastic plug body 110 is arranged in the mounting hole 210 of the power supply shell body 200. At this time, since the edge of the second end face 1120 of the elastic plug body 110 and the outer edge profile of the mounting hole 210 are matched with each other, the second end face 1120 can better block dust and moisture from the outside. At the same time, since the peripheral wall of the elastic plug body 110 abuts against the hole wall of the mounting hole 210, the elastic plug body 110 is provided with a pressure relief air channel 101. As the first end face 1110 of the elastic plug body 110 gradually approaches the locking piece 300, the first end face 1110 of the elastic plug body 110 can exert pressure on the air in the mounting hole 210. The air enters the pressure relief air channel 101 through the first end of the pressure relief air channel 101 extending to the first end face 1110 of the elastic plug body 110, and is finally discharged to the outside through the second end of the pressure relief air channel 101 extending to the second end face 1120 of the elastic plug body 110. In this way, the amount of air trapped in the mounting hole 210 will be greatly reduced, thereby synchronously reducing the reaction force of the air on the elastic plug body 110, and further enabling the above-mentioned hole plug 100 to be more firmly and durably assembled in the mounting hole 210, thereby reducing the occurrence of the hole plug 100 being detached from or even lost from the mounting hole 210.

[0053] Please refer to Figure 3 In some embodiments, the power supply shell assembly further comprises a foot pad 400 arranged at the bottom of the power supply shell body 200. It can be understood that by arranging the foot pad 400 at the bottom of the power supply shell body 200, the bottom of the power supply shell body 200 can be prevented from directly contacting the ground, thereby achieving the effects of protection and shock absorption.

[0054] Please refer to Figures 1 to 4As shown, the portable power supply further comprises the power supply shell assembly and the battery cell module. It can be understood that, after the locking member 300 is assembled in the mounting hole 210 of the power supply shell main body 200, at least part of the elastic plug body 110 is arranged in the mounting hole 210 of the power supply shell main body 200. At this time, the edge of the second end face 1120 of the elastic plug body 110 is matched with the outer edge profile of the mounting hole 210, so that the second end face 1120 can better block dust and moisture from the outside. At the same time, the circumferential wall of the elastic plug body 110 abuts against the hole wall of the mounting hole 210, the pressure relief air channel 101 is arranged on the elastic plug body 110, the first end face 1110 of the elastic plug body 110 can apply pressure to the air in the mounting hole 210, the air enters the pressure relief air channel 101 through the first end of the pressure relief air channel 101 extending to the first end face 1110 of the elastic plug body 110, and finally is discharged to the outside through the second end of the pressure relief air channel 101 extending to the second end face 1120 of the elastic plug body 110. In this way, the amount of air trapped in the mounting hole 210 is greatly reduced, thereby synchronously reducing the reaction force of the air on the elastic plug body 110, and further making the hole plug 100 more firmly and durably assembled in the mounting hole 210, and finally reducing the situation that the hole plug 100 is detached from the mounting hole 210 or even lost.

[0055] Compared with the prior art, the present disclosure has at least the following advantages:

[0056] After the lock piece 300 is assembled in the mounting hole 210, at least part of the elastic plug body 110 is arranged in the mounting hole 210 of the power shell body 200, at this time, since the edge of the second end face 1120 of the elastic plug body 110 and the outer edge contour of the mounting hole 210 are matched with each other, the dust and moisture from the outside can be better blocked by the second end face 1120. At the same time, since the peripheral wall of the elastic plug body 110 abuts against the hole wall of the mounting hole 210, the pressure relief air channel 101 is arranged on the elastic plug body 110, as the first end face 1110 of the elastic plug body 110 gradually approaches the lock piece 300, the first end face 1110 of the elastic plug body 110 can apply pressure to the air in the mounting hole 210, the air enters the pressure relief air channel 101 through the first end of the pressure relief air channel 101 extending to the first end face 1110 of the elastic plug body 110, and finally is discharged to the outside through the second end of the pressure relief air channel 101 extending to the second end face 1120 of the elastic plug body 110. In this way, the amount of air trapped in the mounting hole 210 will be greatly reduced, thereby synchronously reducing the reaction force of the air on the elastic plug body 110, and further making the above-mentioned hole plug 100 be able to be more firmly and long-term assembled in the mounting hole 210, and finally reducing the situation that the hole plug 100 is detached from the mounting hole 210 or even lost.

[0057] The above-described embodiments only express several embodiments of the present disclosure, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present disclosure, several modifications and improvements can be made, which belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent should be subject to the appended claims.

Claims

1. A hole plug, comprising an elastic plug body, at least a part of the elastic plug body is arranged in a mounting hole of a power supply shell body; a peripheral wall of the elastic plug body is arranged to abut against a hole wall of the mounting hole, so that the elastic plug body is interference-fitted in the mounting hole; characterized in that a pressure relief air passage is formed on the elastic plug body; a first end surface of the elastic plug body is located in the mounting hole and is arranged close to a locking member fitted in the mounting hole; an edge of a second end surface of the elastic plug body is adapted to the contour of an outer edge of the mounting hole; a first end of the pressure relief air passage extends to the first end surface of the elastic plug body; a second end of the pressure relief air passage extends to the second end surface of the elastic plug body and is in communication with the outside.

2. The bore plug of claim 1, wherein, The pressure relief air passage extends along the axial direction of the elastic plug body; and / or, The width of the pressure relief air passage gradually increases from the first end surface of the elastic plug body to the second end surface of the elastic plug body; and / or, The pressure relief air passage is formed on the peripheral wall of the elastic plug body; and / or, The interference amount of the elastic plug body with the mounting hole is 0.05mm to 0.1mm.

3. The bore plug of claim 1, wherein, A first positioning structure is arranged on the peripheral wall of the elastic plug body, and the first positioning structure is arranged opposite to a second positioning structure on the hole wall of the mounting hole.

4. The bore plug of claim 3, wherein, The first positioning structure is a limiting groove, and the limiting groove is arranged to be clamped and matched with a limiting block on the hole wall of the mounting hole.

5. The bore plug of claim 4, wherein, The entrance and exit of the limiting groove are arranged towards the locking member fitted in the mounting hole, and the width of the limiting groove gradually decreases from the entrance and exit to the second end surface of the elastic plug body.

6. A bung according to claim 5, wherein The first positioning structure is a limiting protruding rib, and the limiting protruding rib is arranged to be clamped and matched with a limiting clamping groove on the hole wall of the mounting hole.

7. The bore plug of claim 1, wherein A convex rib is formed on the first end surface of the elastic plug body, and a region surrounded by the convex rib on the first end surface forms a clearance; the clearance is arranged opposite to the locking member fitted in the mounting hole; and / or, A first matching mark is arranged on the first end surface of the elastic plug body, and the first matching mark is matched with a second matching mark in the mounting hole; and / or, A parting line is arranged on the peripheral wall of the elastic plug body.

8. A power supply housing assembly characterized by, The power supply shell assembly comprises a power supply shell body, a locking member and the hole plug according to any one of claims 1 to 7; the power supply shell body is provided with a mounting hole, the locking member is fitted in the mounting hole, and the elastic plug body is arranged in the mounting hole; the peripheral wall of the elastic plug body abuts against the hole wall of the mounting hole, so that the elastic plug body is interference-fitted in the mounting hole.

9. The power supply housing assembly of claim 8, wherein, The power supply shell assembly further comprises a foot pad arranged at the bottom of the power supply shell body.

10. A portable power source, characterized by, The power supply shell assembly comprises a battery cell module and the power supply shell assembly according to any one of claims 8 to 9; the battery cell module is arranged in the power supply shell body.

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