Battery pack with waterproof button

Abstract

The utility model discloses a battery pack with a waterproof button, which comprises a battery pack main body and a button mounting part arranged on one side of the battery pack main body, a circuit board is arranged in the button mounting part, the circuit board is electrically connected with the battery pack main body, and an electronic switch and a button matched with the electronic switch are arranged on the circuit board. The button mounting part is provided with a through hole for the button to extend out, an elastic part for sealing the button is arranged between the button mounting part and the circuit board, a waterproof glue layer is arranged on the back side of the circuit board, and a sealing glue layer is formed between the front side of the circuit board and the button mounting part through glue filling. The utility model has the advantages that the waterproof performance at the button is improved, and the waterproof capability of the circuit board is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack waterproofing, in particular to a battery pack with a button waterproof arrangement. Background Art

[0002] The buttons in the battery pack usually cooperate with the contacts to complete the circuit switching. The buttons can be manually operated to provide control signals to the electric drive components. In some application scenarios, the waterproof requirements of the buttons are high. For example, in low temperature environments, due to the internal volume shrinkage, there is a certain pressure difference between the air pressure inside the battery pack and the outside air pressure, which causes moisture to enter the battery pack from the sliding position of the button, affecting the battery life and reliability.

[0003] In order to improve the waterproof ability of the button, as in the Chinese patent literature, the authorization announcement number is CN219778744U, and a waterproof button switch authorized and announced on September 29, 2023 includes a shell, a button, a PCB board assembly, and a silicone member. The shell is annular as a whole; the button is slidably arranged in the shell along the axial direction of the shell; the PCB board assembly is connected to the shell, and a touch switch is provided on the side of the PCB board assembly close to the button; the silicone member is located between the button and the PCB board assembly, and the silicone member includes a diaphragm and an annular body. The diaphragm is located in the hollow area of ​​the body and corresponds to the touch switch. The edge of the diaphragm is sealed and connected to the body. When the button is pressed down, it contacts the diaphragm, the top of the body contacts the button, and the bottom of the body contacts the PCB board assembly. The peripheral wall of the body has at least two ring parts protruding outward, and the ring parts contact the inner wall of the shell. The application forms a waterproof structure by surrounding the button with a diaphragm and an annular body.

[0004] The disadvantage of the prior art is that the sealing between the PCB board assembly, the buttons and the housing only relies on the blocking of the silicone component. After the moisture leaks out of the silicone component, it will directly enter the back of the PCB board assembly, which poses a safety hazard to the battery pack and is not suitable for application in the battery pack. Utility Model Content

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a battery pack with a button waterproof arrangement, which improves the waterproof performance of the button and the waterproof capability of the circuit board.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A battery pack with a waterproof button arrangement comprises a battery pack body and a button mounting portion arranged on one side of the battery pack body, a circuit board is arranged in the button mounting portion, the circuit board is electrically connected to the battery pack body, an electronic switch and a button cooperating with the electronic switch are arranged on the circuit board, a through hole is provided on the button mounting portion for the button to extend out, an elastic portion for sealing the button is provided between the button mounting portion and the circuit board, a waterproof adhesive layer is provided on the back side of the circuit board, and a sealing adhesive layer is formed by glue filling between the front side of the circuit board and the button mounting portion.

[0008] In the above-mentioned battery pack with a button waterproof arrangement, the elastic part is integrally arranged with the button, the elastic part surrounds the button, and the elastic part is pressed by the button mounting part and the circuit board so that the elastic part fits the button mounting part and the circuit board.

[0009] In the above-mentioned battery pack with a waterproof button arrangement, the elastic portion includes an elastic convex edge located at the edge of the button, and the elastic convex edge is parallel to the plane where the circuit board is located.

[0010] In the above-mentioned battery pack with a button waterproof arrangement, the elastic portion includes a first annular boss located on the elastic convex edge and protruding toward the button mounting portion, and the button mounting portion is provided with a first annular groove that matches the first annular boss.

[0011] In the above-mentioned battery pack with a button waterproof arrangement, the elastic portion includes a second annular boss located at the elastic convex edge and protruding toward the circuit board, and a second annular groove matching the second annular boss is provided on the circuit board.

[0012] In the above-mentioned battery pack with a button waterproof arrangement, the elastic convex edge is provided with a third annular groove, and the button mounting portion is provided with a third annular boss matching the third annular groove.

[0013] In the above-mentioned battery pack with a button waterproof arrangement, the button includes a button portion and a plurality of display portions, the button portion and the display portion are respectively surrounded by an elastic portion, and the button portion and the display portion, and adjacent display portions are connected via the elastic portion.

[0014] In the above-mentioned battery pack with a button waterproof arrangement, the button includes a pressing portion and a connecting ring located at one axial end of the pressing portion, the connecting ring is elastically telescopically arranged along the axial direction of the pressing portion, the elastic portion is connected to the connecting ring, the pressing portion is arranged in the axial direction of the electronic switch, and the connecting ring surrounds the side of the electronic switch.

[0015] In the above-mentioned battery pack with a waterproof button arrangement, the connecting ring is in the shape of a folded tube; and the button is made of a silicone material.

[0016] In the above-mentioned battery pack with a waterproof button arrangement, a plurality of glue openings communicating with both sides of the circuit board are provided on the circuit board and / or the button mounting portion.

[0017] In the above-mentioned battery pack with a waterproof button arrangement, a plurality of glue overflow openings are provided on the button mounting portion.

[0018] In the above-mentioned button waterproof battery pack, a connector for electrical connection is provided on the circuit board, an insulating ring surrounding the connector is provided on the circuit board, and the height of the lower end of the glue overflow port is lower than the height of the upper end of the insulating ring.

[0019] Beneficial effects of the utility model:

[0020] A battery pack with a button waterproof arrangement, wherein the button mounting part cooperates with the elastic part to seal the button when the button mounting part and the circuit board are assembled, and the sealing glue layer formed by the glue filling between the circuit board and the button mounting part further improves the waterproof performance of the button, thereby improving the waterproof capability of the battery. The waterproof glue layer and the sealing glue layer respectively realize the sealing of both sides of the circuit board, thereby ensuring the waterproof performance of the circuit board.

[0021] Furthermore, the elastic part includes an elastic convex edge located at the edge of the button, and the elastic convex edge is parallel to the plane where the circuit board is located. When the button mounting part is assembled with the circuit board, the elastic convex edge can be conveniently pressed to achieve sealing of the button.

[0022] Furthermore, the elastic part includes a first annular boss located at the elastic convex edge and protruding toward the button mounting part, and the button mounting part is provided with a first annular groove that matches the first annular boss. Through the cooperation of the first annular boss and the first annular groove, the sealing area between the elastic part and the button mounting part can be expanded, and the sealing performance of the elastic part between the button mounting part and the circuit board can be improved. At the same time, the first annular boss and the first annular groove have a matching positioning function, which improves the assembly efficiency of the button and the button mounting part.

[0023] Furthermore, the elastic part includes a second annular boss located at the elastic convex edge and protruding toward the circuit board, and the circuit board is provided with a second annular groove that matches the second annular boss. The second annular boss and the second annular groove cooperate to achieve positioning of the circuit board relative to the button, which facilitates installation of the circuit board in the button mounting part, and can improve the sealing between the circuit board and the elastic part after the button mounting part and the circuit board are assembled.

[0024] Furthermore, the elastic flange is provided with a third annular groove on the inner side of the first annular boss, and the button mounting portion is provided with a third annular boss that matches the third annular groove. On the basis of the cooperation between the first annular boss and the first annular groove, the third annular groove and the third annular boss are further added. When water vapor is generated on the button surface, the water vapor needs to bypass the first annular boss and the third annular boss to enter between the button mounting portion and the circuit board, which is difficult and the button has good waterproof performance.

[0025] Furthermore, the electronic switch is a columnar structure protruding outwardly to one side of the circuit board, and the button covers the outer side of the electronic switch. The button realizes waterproof covering of the electronic switch.

[0026] Furthermore, the button includes a button portion and a plurality of display portions, the button portion and the display portion are respectively surrounded by an elastic portion, and the button portion and the display portion, and adjacent display portions are connected by the elastic portion. Multiple buttons are connected by elastic convex edges, and the elastic convex edges can simultaneously seal multiple buttons when pressed, and the overall waterproof performance is high.

[0027] Furthermore, the button includes a pressing portion and a connecting ring located at one axial end of the pressing portion, the connecting ring is elastically telescopically arranged along the axial direction of the pressing portion, the elastic portion is connected to the connecting ring, the pressing portion is arranged in the axial direction of the electronic switch, and the connecting ring surrounds the side of the electronic switch, thereby realizing reliable waterproof protection of the electronic switch.

[0028] Furthermore, the connection ring is in the shape of a folded tube, and the button is made of silicone. The folded tube-shaped connection ring can be axially folded and deformed when pressed, which facilitates the pressing operation of the electronic switch. The silicone is soft and elastic, which improves the operating feel of the button.

[0029] Furthermore, the circuit board and / or the button mounting portion are provided with a plurality of glue ports communicating with both sides of the circuit board. The plurality of glue ports are provided to facilitate glue filling and exhaust of internal air during glue filling.

[0030] Furthermore, the button mounting part is provided with a plurality of overflow openings, and the outside of the button mounting part is provided with an overflow receiving part surrounding the overflow openings, so as to overflow the excess glue during the glue filling, facilitate the control of the glue filling thickness of the circuit board, and prevent the glue from overflowing to the outside of the button mounting part to cause pollution.

[0031] Furthermore, a connector for electrical connection is provided on the circuit board, and an isolation ring surrounding the connector is provided on the circuit board, and the height of the lower end of the overflow port is lower than the height of the upper end of the isolation ring. The isolation ring protects the connector, and through the setting of the overflow port, when the glue is poured, the excess glue will flow away from the overflow port, avoiding overflow from the upper end of the isolation ring onto the connector, thereby improving the reliability of the connector.

[0032] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Figure 1 It is an exploded schematic diagram of a button mounting portion and a button in a battery pack with a waterproof button arrangement proposed in one embodiment of the utility model;

[0035] Figure 2This is an exploded schematic diagram of a circuit board and a button mounting portion in a battery pack with a button waterproof arrangement according to one embodiment of the present utility model;

[0036] Figure 3 It is an exploded schematic diagram of an isolation ring and a transparent lampshade relative to a button mounting portion in a battery pack for a button waterproof arrangement proposed in one embodiment of the utility model;

[0037] Figure 4 It is a schematic diagram of the glue filling direction of the button mounting part in a battery pack with a button waterproof arrangement proposed in one embodiment of the utility model;

[0038] Figure 5 It is an internal cross-sectional view of a button installation portion in a battery pack with a button waterproof arrangement according to one embodiment of the present utility model;

[0039] Figure 6 yes Figure 5 The enlarged schematic diagram of point A in the middle;

[0040] Figure 7 The utility model is a schematic diagram of the inner side of a button installation part in a battery pack with a button waterproof arrangement proposed in one embodiment of the utility model.

[0041] In the figure: button mounting part 1, through hole 2, transparent lampshade 3, circuit board 4, electronic switch 5, button 6, button part 7, display part 8, pressing part 9, connecting ring 10, connector 11, isolating ring 12, glue overflow port 13, glue liquid port 14, elastic convex edge 15, first annular boss 16, first annular groove 17, second annular boss 18, third annular boss 19, positioning column 20, positioning hole 21, and glue overflow receiving part 22. DETAILED DESCRIPTION

[0042] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0043] In the description of this embodiment, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore, cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second", and "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] Reference Figures 1 to 7 A battery pack with a waterproof button arrangement proposed in one of the embodiments of the utility model includes a battery pack body and a button mounting portion 1 arranged on one side of the battery pack body, a circuit board 4 is arranged in the button mounting portion 1, the circuit board 4 is electrically connected to the battery pack body, an electronic switch 5 and a button 6 cooperating with the electronic switch 5 are arranged on the circuit board 4, a through hole 2 for the button 6 to extend out is provided on the button mounting portion 1, an elastic portion for sealing the button 6 is provided between the button mounting portion 1 and the circuit board 4, a waterproof adhesive layer is provided on the back side of the circuit board 4, and a sealing adhesive layer is formed by glue filling between the front side of the circuit board 4 and the button mounting portion 1.

[0045] The battery pack disclosed in the present application is waterproofed at the button 6 installation position, and the elastic part is sealed between the button installation part 1 and the circuit board 4 to complete the sealing of the button, preventing moisture from leaking from the button 6 into the button installation part 1 and even into the battery pack. After the button installation part 1 and the circuit board 4 are installed in place, glue is poured between the two, and the waterproof ability of the circuit board 4 and the button installation part 1 is further improved by the sealing glue layer and the waterproof glue layer, so that even if moisture leaks from the elastic part to between the circuit board 4 and the button installation part 1, it will not cause a short circuit.

[0046] The front side and back side here are defined based on the relative positions of the circuit board and the button. The side of the circuit board where the button is set is the front side, and the side of the circuit board facing away from the button is the back side.

[0047] The button mounting part 1 used in this embodiment is a cover structure with a one-way opening, the opening of the button mounting part 1 faces the battery pack body, and the circuit board 4 inside the opening of the button mounting part 1 is provided with a connector 11 to achieve circuit connection with the battery pack body. The circuit board 4 is installed from the opening of the button mounting part 1 to the inside of the button mounting part 1 and is locked by bolts. Furthermore, the button mounting part 1 is an indicator light cover, and a transparent lampshade 3 is slidably provided in the through hole 2 of the indicator light cover, and the transparent lampshade 3 covers the button 6. The transparent lampshade 3 is made of hard material and can protect the button 6.

[0048] As one of the embodiments of the present invention, a battery pack with a button waterproof arrangement is proposed, in which the elastic part is integrally arranged with the button 6, the elastic part surrounds the button 6, and the elastic part is pressed by the button mounting part 1 and the circuit board 4 so that the elastic part fits the button mounting part 1 and the circuit board 4. The elastic part and the button 6 adopt an integral structure. When the button 6 is installed in place, the elastic part is also installed in place. There is no need to consider the position error between the two, and the assembly efficiency is high.

[0049] A connector 11 for electrical connection is provided on the circuit board 4, an isolating ring 12 surrounding the connector 11 is provided on the circuit board 4, a plurality of glue overflow ports 13 are provided on the button mounting portion 1, and a glue overflow receiving portion 22 surrounding the outside of the glue overflow port 13 is provided on the outside of the button mounting portion, and the height of the lower end of the glue overflow port 13 is lower than the height of the upper end of the isolating ring 12. The glue overflow port 13 is located on the side adjacent to the opening of the button mounting portion 1, and the glue overflow port 13 opens to the upper side. The isolating ring 12 is an annular sponge pad, which protects the connector 11 through the sponge pad, and prevents the glue from entering the connector 11 when the glue is poured on the circuit board 4, thereby ensuring the reliability of the connector 11. In order to ensure the reliability of the glue pouring between the circuit board 4 and the button mounting portion 1, and to avoid the accumulation of internal air that affects the glue pouring quality, the button mounting portion 1 is provided with a plurality of glue ports 14 connecting the two sides of the circuit board. Exemplarily, a plurality of glue openings 14 are provided at the edge of the circuit board 4 , through which glue can be conveniently poured into between the circuit board 4 and the button mounting portion 1 , and air between the circuit board 4 and the button mounting portion 1 can be conveniently discharged.

[0050] In this embodiment, a plurality of connecting screw holes are arranged on the outside of the button mounting portion, and the number of the connecting screw holes is 4, or other numbers such as 3, 5, etc. The overflow glue receiving portion 22 is arranged between the button mounting portion and the connecting screw holes, and specifically, the outside of the button mounting portion and the connecting screw holes are connected by a plate so that the plate and the outside of the button mounting portion form a cavity, and the cavity is the overflow glue receiving portion 22 for receiving the overflowed glue, and the overflow glue port 13 is arranged at a position of the button mounting portion corresponding to the cavity, so that the overflowed glue from the overflow glue port overflows into the cavity, thereby preventing the glue from overflowing to the outside of the button mounting portion and causing pollution.

[0051] As a simple replacement for the above solution, the glue opening 14 is provided on the wall surface of the button mounting portion 1 , or opposite notches are provided between the button mounting portion 1 and the circuit board to jointly form the glue opening 14 .

[0052] As a simple replacement for the above solution, if the connector is in a form without a glue port and the connector is raised, the isolation ring of the sponge pad structure can be eliminated.

[0053] As one of the embodiments of the present invention, a battery pack with a button waterproof arrangement is proposed, in which the electronic switch 5 is a cylindrical structure protruding outward to one side of the circuit board 4, and the button 6 covers the outer side of the electronic switch 5. The electronic switch 5 is a touch-controlled control element on the circuit board 4. When the button 6 is pressed, the force is transmitted to the axial direction of the electronic switch 5, so that the on and off state of the electronic switch 5 is switched.

[0054] As one of the embodiments of the present invention, a battery pack with a button waterproof arrangement is proposed, the elastic portion includes an elastic convex edge 15 located at the edge of the button 6, and the elastic convex edge 15 is parallel to the plane where the circuit board 4 is located. After the circuit board 4 and the button mounting portion 1 are assembled, the elastic convex edge 15 can be pressed tightly to form a continuous surface contact seal with a strong sealing effect. Figure 6 As shown, in order to improve the sealing performance between the elastic part and the button mounting part 1 and facilitate the positioning and installation of the elastic part relative to the button mounting part 1, the elastic part includes a first annular boss 16 located on the elastic flange 15 and protruding toward the button mounting part 1, and the button mounting part 1 is provided with a first annular groove 17 matching the first annular boss 16. Furthermore, the elastic flange 15 is provided with a third annular groove on the inner side of the first annular boss 16, and the button mounting part 1 is provided with a third annular boss 19 matching the third annular groove. The first annular boss 16 and the third annular boss 19 form a multi-section bent folding surface, which can increase the difficulty of water penetration.

[0055] In order to improve the sealing performance between the elastic part and the circuit board 4 and facilitate the positioning and installation of the elastic part relative to the circuit board 4, the elastic part includes a second annular boss 18 located on the elastic flange 15 and protruding toward the circuit board 4, and a second annular groove matching the second annular boss 18 is provided on the circuit board 4.

[0056] Those skilled in the art can understand that, as a simple replacement of the above scheme, the setting positions of the first annular boss 16 and the first annular groove 17 can be exchanged, and the setting positions of the second annular boss 18 and the second annular groove can also be exchanged. In the above scheme, three sets of features, namely, the first annular boss 16 and the first annular groove 17, the second annular boss 18 and the second annular groove, and the third annular groove and the third annular boss 19, are used together. As a simple replacement of the above scheme, the three sets of features are used separately or in combination of two.

[0057] As a battery pack with a button waterproof arrangement proposed in one embodiment of the present invention, the button 6 is made of silicone material. Figure 1As shown, the button 6 includes a button portion 7 and a plurality of display portions 8, and the button portion 7 and the plurality of display portions 8 are respectively surrounded by an elastic portion, and the button portion 7 and the display portion 8, and the adjacent display portions 8 are connected by the elastic portion. In this example, the button portion 7 is a main control button 6 for controlling the on and off of the battery pack circuit, and there are four display portions 8, which are long strips, and the four display portions 8 correspond to one side of the button portion 7. The display portion 8 is transparent and includes a recessed portion corresponding to the indicator LED light. The transparent recessed portion facilitates observation of the indicator light and can play a role in positioning the button 6 when it is installed, while ensuring sealing and waterproofing of the indicator LED light position. When the elastic convex edge 15 is pressed, the periphery of the button portion 7 and the periphery of the display portion 8 are both reliably sealed. Taking the button portion 7 as an example, the button portion 7 includes a pressing portion 9 and a connecting ring 10 located at one axial end of the pressing portion 9. The connecting ring 10 is elastically telescopically arranged along the axial direction of the pressing portion 9. For example, the connecting ring 10 is in the shape of a folded tube; the connecting ring 10 includes two truncated cone annular surfaces, and the cone angles of the truncated cone annular surfaces are arranged opposite to each other, so that the connecting ring 10 has the ability to fold and stretch in the axial direction. With the silicone material of the button 6, the connecting ring 10 can be elastically reset. The elastic flange 15 is connected to the connecting ring 10, the pressing portion 9 is arranged in the axial direction of the electronic switch 5, and the connecting ring 10 surrounds the side of the electronic switch 5.

[0058] As a simple replacement for the above solution, the number of button parts 7 and display parts 8 can be set to other numbers, and the connecting ring 10 is a folded tube composed of three or four sections of equal truncated cone annular surfaces.

[0059] Figures 1 to 4 The figure shows an assembly process of the components related to the button mounting part 1. First, the button 6 is installed on the button mounting part 1. The button mounting part 1 is provided with a semi-cylindrical positioning column 20. The button 6 is provided with a positioning hole 21 that matches the positioning column 20, so that the button 6 can be pre-positioned. The button 6 extends from the through hole 2 of the button mounting part 1 to the outside of the button mounting part 1, forming a Figure 2 As shown, after Figure 2 The circuit board 4 is fixedly connected to the button mounting portion 1 by bolts. Three bolts are arranged around the button portion 7. The three bolts are distributed in an isosceles triangle to improve the stability of fixing the circuit board 4. After the circuit board 4 and the button mounting portion 1 are installed, as shown in FIG. Figure 3 As shown, an isolation ring 12 is put on the connector 11 of the circuit board 4, and a transparent lampshade 3 is installed outside the button 6. Figure 4 As shown, the button mounting part 1 is sealed by glue filling, and the arrow direction is the glue filling direction. The glue on the upper side of the circuit board 4 flows from the glue opening 14 to the lower side of the circuit board 4. When the glue is sufficient, the excess glue overflows from the overflow opening 13, and finally the waterproof button 6 assembly structure of the battery pack is formed.

[0060] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A battery pack with a waterproof button arrangement, comprising a battery pack body and a button mounting portion (1) arranged on one side of the battery pack body, wherein a circuit board (4) is arranged inside the button mounting portion (1), the circuit board (4) is electrically connected to the battery pack body, an electronic switch (5) and a button (6) cooperating with the electronic switch (5) are arranged on the circuit board (4), and the button mounting portion (1) is provided with a through hole (2) for the button (6) to extend out, wherein: An elastic portion for sealing the button is provided between the button mounting portion and the circuit board, a waterproof adhesive layer is provided on the back side of the circuit board, and a sealing adhesive layer is formed by pouring glue between the front side of the circuit board (4) and the button mounting portion (1).

2. A battery pack with a button waterproof arrangement according to claim 1, characterized in that: The elastic part is integrally arranged with the button (6), the elastic part surrounds the button (6), and the elastic part is pressed by the button mounting part (1) and the circuit board (4) so ​​that the elastic part fits the button mounting part (1) and the circuit board (4).

3. A battery pack with a button waterproof arrangement according to claim 2, characterized in that: The elastic portion comprises an elastic convex edge (15) located at the edge of the button (6), and the elastic convex edge (15) is parallel to the plane where the circuit board (4) is located.

4. A battery pack with a button waterproof arrangement according to claim 3, characterized in that: The elastic portion comprises a first annular boss (16) located on the elastic convex edge (15) and protruding toward the button mounting portion (1), and the button mounting portion (1) is provided with a first annular groove (17) matching the first annular boss (16); and / or, the elastic portion comprises a second annular boss (18) located on the elastic convex edge (15) and protruding toward the circuit board (4), and the circuit board (4) is provided with a second annular groove matching the second annular boss (18); and / or, the elastic convex edge (15) is provided with a third annular groove, and the button mounting portion (1) is provided with a third annular boss (19) matching the third annular groove.

5. The battery pack with a button waterproof arrangement according to claim 1, characterized in that: The button (6) comprises a button portion (7) and a plurality of display portions (8); the button portion (7) and the display portion (8) are respectively surrounded by an elastic portion; the button portion (7) and the display portion (8) and adjacent display portions (8) are connected via the elastic portion.

6. A battery pack with a button waterproof arrangement according to claim 1, characterized in that: The button (6) comprises a pressing portion (9) and a connecting ring (10) located at one axial end of the pressing portion (9); the connecting ring (10) is elastically telescopically arranged along the axial direction of the pressing portion (9); the elastic portion is connected to the connecting ring (10); the pressing portion (9) is arranged in the axial direction of the electronic switch (5); and the connecting ring (10) surrounds the side of the electronic switch (5).

7. A battery pack with a button waterproof arrangement according to claim 6, characterized in that: The connecting ring (10) is in the shape of a folded tube; the button (6) is made of a silicone material.

8. The battery pack with a button waterproof arrangement according to claim 1, characterized in that: The circuit board and / or the button mounting portion are provided with a plurality of glue openings communicating with the two sides of the circuit board.

9. A battery pack with a button waterproof arrangement according to any one of claims 1 to 8, characterized in that: The button installation part is provided with a plurality of overflow glue openings, and the outer side of the button installation part is provided with an overflow glue receiving part surrounding the outer side of the overflow glue openings.

10. A battery pack with a button waterproof arrangement according to claim 9, characterized in that: The circuit board (4) is provided with a connector (11) for electrical connection, the circuit board (4) is provided with an isolation ring (12) surrounding the connector (11), and the height of the lower end of the glue overflow port (13) is lower than the height of the upper end of the isolation ring (12).

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