Battery liquid injection hole sealing structure, battery, battery pack and electric equipment

Abstract

The invention relates to a battery liquid injection hole sealing structure, a battery, a battery pack and electric equipment, the battery liquid injection hole sealing structure is used for sealing a liquid injection hole, the battery liquid injection hole sealing structure comprises a mounting part, the mounting part is provided with a mounting groove and is provided with an opening and a liquid injection channel, and the opening and the liquid injection channel are respectively communicated with the mounting groove; and the sealing piece is provided with a sealing part, and the sealing part is inserted into the mounting groove from the opening and is in sealing fit with the mounting groove. The battery liquid injection hole sealing structure can ensure the sealing effect of the sealing element on the liquid injection hole.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of batteries, in particular to a battery electrolyte injection hole sealing structure, a battery, a battery pack and a power consumption device. BACKGROUND

[0002] In order to facilitate the injection of electrolyte into the battery, an electrolyte injection hole structure is punched on the shell of the battery. At present, in order to improve the volume energy density of the battery, the thickness of the battery shell is becoming thinner, which leads to the thinner electrolyte injection hole structure punched, and the sealing effect of the sealing member installed in the electrolyte injection hole cannot be guaranteed. SUMMARY

[0003] The purpose of the present disclosure is to provide a battery electrolyte injection hole sealing structure, a battery, a battery pack and a power consumption device, which can guarantee the sealing effect of the sealing member on the electrolyte injection hole.

[0004] In order to achieve the above-mentioned purpose, according to a first aspect of the present disclosure, a battery electrolyte injection hole sealing structure is provided, which is used for sealing an electrolyte injection hole and comprises: a mounting member adapted to be installed in the electrolyte injection hole, the mounting member being formed with a mounting groove and being provided with an opening and an electrolyte injection channel, the opening and the electrolyte injection channel being respectively communicated with the mounting groove; and a sealing member, part of which is inserted into the mounting groove from the opening and is in sealing cooperation with the mounting groove.

[0005] Optionally, the sealing member comprises a sealing portion and a boss, the boss being arranged on the opening, and the sealing portion being adapted to be inserted into the mounting groove and being in close cooperation with the groove wall of the mounting groove.

[0006] Optionally, the sealing portion is connected to the boss and is configured in a ring cylinder shape, and the cylinder mouth of the sealing portion gradually expands from the boss.

[0007] Optionally, the sealing member further comprises a sealing ring, the sealing ring being sleeved on the sealing portion and being compressed between the boss and the mounting member for sealing the opening.

[0008] Optionally, the mounting groove comprises a guide wall, an extension wall, a connecting wall and a pressing wall connected in sequence, the guide wall is connected with the channel mouth of the electrolyte injection channel, the extension wall extends from the guide wall away from the electrolyte injection channel, the pressing wall is opposite to the extension wall and is connected with the extension wall through the connecting wall, and the guide wall is used for guiding the sealing portion to extend into the mounting groove and to be in close cooperation with the pressing wall.

[0009] Optionally, the mounting member has a bottom wall, the extension wall extends from the guide wall towards the opening at an angle, and an included angle is formed between the extension wall and the bottom wall.

[0010] Optionally, the mounting member has a bottom wall, the pressing wall extends from the connecting wall toward the guiding wall in a first direction, and a length of the pressing wall in the first direction is greater than or equal to 1 mm.

[0011] According to a second aspect of the present disclosure, a battery is provided, which includes a housing and the above-mentioned battery liquid injection hole sealing structure, the housing is formed with the liquid injection hole, the mounting member is arranged in the housing, and the sealing part passes through the liquid injection hole and sealingly cooperates with the mounting groove to seal the liquid injection hole.

[0012] Optionally, the battery further includes a support frame arranged in the housing and provided with a mounting table and a through hole, the mounting member is fixed to the mounting table, and the through hole is communicated with the liquid injection channel and arranged on a side of the liquid injection channel away from the housing.

[0013] Optionally, the battery further includes two pole post assemblies, the two pole post assemblies are respectively arranged at two ends of the housing in a length direction, and the liquid injection hole is arranged on a side of one of the pole post assemblies.

[0014] Optionally, the battery further includes an isolation seat arranged in the housing, the support frame and the isolation seat are connected through a plug-in structure, the plug-in structure includes plug-in blocks and plug-in grooves matched with each other, one of the support frame and the isolation seat is provided with the plug-in blocks, and the other is provided with the plug-in grooves.

[0015] Optionally, the support frame is provided with the plug-in blocks, the isolation seat is provided with the plug-in grooves and forms a gap with the housing, the plug-in blocks are plugged into the plug-in grooves and fit with the housing.

[0016] According to a third aspect of the present disclosure, a battery pack is provided, which includes the above-mentioned battery.

[0017] According to a fourth aspect of the present disclosure, an electrical equipment is provided, which includes the above-mentioned battery or the above-mentioned battery pack.

[0018] Through the above technical solutions, in the battery liquid injection hole sealing structure provided by the present disclosure, the sealing member can be inserted into the mounting groove from the opening and sealingly cooperates with the mounting groove, the opening and the liquid injection channel are respectively communicated with the mounting groove, so that the sealing member can seal the opening, the liquid injection channel and the mounting groove, wherein, in order to facilitate the injection of electrolyte, the liquid injection channel needs to be communicated with the liquid injection hole, so that the sealing member can also seal the liquid injection hole. In addition, by arranging the mounting member and inserting the sealing member into the mounting groove of the mounting member, the sealing effect of the sealing member can be ensured.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description of the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, which together with the detailed description, serve to explain the present disclosure. In the drawings: Figure 1 is a structural schematic view of a sealing member provided by an embodiment of the present disclosure; Figure 2 is a sectional view of a support frame and a mounting member provided by an embodiment of the present disclosure; Figure 3 is a sectional view of a battery provided by an embodiment of the present disclosure; Figure 2 is an enlarged view of A in FIG. 4; Figure 4 is a perspective view of a support frame and a mounting member provided by an embodiment of the present disclosure; Figure 5 is a perspective view of a battery provided by an embodiment of the present disclosure; Figure 6 is a top view of a battery provided by an embodiment of the present disclosure; Figure 7 is a sectional view of a battery provided by an embodiment of the present disclosure; Figure 6 is an enlarged view of B in FIG. 5; Figure 8 is a sectional view of a battery provided by an embodiment of the present disclosure; Figure 9 is a sectional view of a battery provided by an embodiment of the present disclosure; Figure 8 is an enlarged view of C in FIG. 6; Figure 10 is an assembly schematic view of a support frame and a pole assembly provided by an embodiment of the present disclosure.

[0021] BRIEF DESCRIPTION OF DRAWINGS 110, mounting member; 111, liquid injection channel; 112, mounting groove; 1121, guide wall; 1122, extension wall; 1123, connecting wall; 1124, press-fitting wall; 113, opening; 120, sealing member; 121, sealing portion; 122, boss; 123, sealing ring; 210, liquid injection hole; 220, outer shell; 221, first shell; 222, second shell; 223, accommodating area; 230, pole assembly; 231, isolation seat; 310, support frame; 311, plug-in block; 312, avoiding area; 313, supporting area; 314, through hole; 315, mounting table. DETAILED DESCRIPTION

[0022] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0023] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" refer to "inner" and "outer" relative to the contour of the corresponding component itself; "first direction" refers to direction L1 in the accompanying drawings; and "second direction" refers to direction L2 in the accompanying drawings. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance implications. In addition, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0024] According to the first aspect of this disclosure, reference to Figures 1 to 3 as well as Figure 9 As shown, a battery filling hole sealing structure is provided for sealing a filling hole 210, and includes: a mounting member 110, which is adapted to be installed in the filling hole 210, the mounting member 110 having a mounting groove 112 and an opening 113 and a filling channel 111, the opening 113 and the filling channel 111 being respectively connected to the mounting groove 112; and a sealing member 120, a portion of the sealing member 120 being inserted into the mounting groove 112 from the opening 113 and sealingly engaging with the mounting groove 112.

[0025] Through the above technical solution, in the battery electrolyte filling hole sealing structure provided in this disclosure, the sealing element 120 can be inserted into the mounting groove 112 from the opening 113 and seal with the mounting groove 112. The opening 113 and the electrolyte filling channel 111 are respectively connected to the mounting groove 112. In this way, the sealing element 120 can seal the opening 113, the electrolyte filling channel 111, and the mounting groove 112. In order to facilitate the injection of electrolyte, the electrolyte filling channel 111 needs to be connected to the electrolyte filling hole 210. Thus, the sealing element 120 can also seal the electrolyte filling hole 210. In addition, by setting the mounting element 110 and inserting the sealing element 120 into the mounting groove 112 of the mounting element 110, the sealing effect of the sealing element 120 can be guaranteed.

[0026] In the battery filling hole sealing structure provided in this disclosure, the seal 120 can be constructed in any suitable manner. As an exemplary embodiment, refer to... Figure 1 and Figure 9As shown, the seal 120 may include a sealing portion 121 and a boss 122. The boss 122 may cover the opening 113, and the sealing portion 121 may be adapted to be inserted into the mounting groove 112 and tightly fitted with the groove wall of the mounting groove 112. In this way, the sealing portion 121 can be inserted into the mounting groove 112 from the opening 113 to seal the mounting groove 112, and the boss 122 covers the opening 113 to ensure that the seal 120 completely seals the opening 113, thereby ensuring the sealing effect of the seal 120.

[0027] In the battery filling hole sealing structure provided in this disclosure, the sealing part 121 can be constructed in any suitable manner. As an exemplary embodiment, refer to... Figure 1 and Figure 9 As shown, the sealing part 121 can be connected to the boss 122 and is constructed in an annular shape, with the opening of the sealing part 121 gradually widening from the boss 122. The mounting groove 112 can also be constructed in an annular shape to fit the sealing part 121. Thus, when the seal 120 is sealed and installed in the mounting groove 112, the sealing part 121 can be arranged around the injection channel 111 and pressed tightly within the mounting groove 112. Furthermore, the annular shape of the sealing part 121 ensures that it surrounds the injection channel 111, preventing any dead zones that could affect the sealing effect of the seal 120.

[0028] In the battery filling hole sealing structure provided in this disclosure, in order to further ensure the sealing effect of the seal 120 on the opening 113, as an exemplary embodiment, reference is made to... Figure 1 and Figure 9 As shown, the seal 120 may further include a sealing ring 123, which can be sleeved on the sealing portion 121 and pressed between the boss 122 and the mounting member 110 to seal the opening 113. In this way, the sealing ring 123 is in a compressed and deformed state, allowing it to tightly conform to the boss 122, the mounting member 110, and the sealing portion 121, ensuring a good seal for the opening 113. The boss 122 can be constructed as a flattened cylinder, and the sealing ring 123 can be constructed as a flattened ring, thus saving space occupied by the boss 122 and the sealing ring 123 along the axial direction of the injection channel 111. In this embodiment, the boss 122 can be made of metal, such as aluminum alloy or stainless steel. The sealing ring 123 can be made of PFA, PP, or other materials.

[0029] Furthermore, the seal 120 can also be made of other suitable materials. In another exemplary embodiment, the sealing portion 121 and the boss 122 can be made of metal, such as aluminum alloy or stainless steel. The sealing ring 123 can be made of PFA, PP, or other materials. In this way, the sealing portion 121 can be inserted into the mounting groove 112 through the opening 113 and deform, causing the boss 122 to move downwards and press against the sealing ring 123 fitted on the sealing portion 121. This causes the sealing ring 123 to deform, and the deformed sealing ring 123 can tightly fit the sealing portion 121, the boss 122, and the battery casing 220, ensuring the sealing effect of the sealing ring 123 on the opening 113. Furthermore, when the sealing portion 121 is installed in the mounting groove 112, the shape of the sealing portion 121 matches the shape of the mounting groove 112. This prevents the sealing portion 121 from falling out of the mounting groove 112, ensuring that the boss 122 always presses against the sealing ring 123, thereby ensuring the sealing effect of the sealing ring 123.

[0030] In the battery filling hole sealing structure provided in this disclosure, the mounting groove 112 can be constructed in any suitable manner. As an exemplary embodiment, refer to... Figure 2 and Figure 3 As shown, the mounting groove 112 includes a guide wall 1121, an extension wall 1122, a connecting wall 1123, and a press-fit wall 1124 connected in sequence. The guide wall 1121 is connected to the opening of the injection channel 111. The extension wall 1122 extends from the guide wall 1121 away from the injection channel 111. The press-fit wall 1124 is opposite to the extension wall 1122 and is connected to the extension wall 1122 through the connecting wall 1123. The guide wall 1121 is used to guide the sealing part 121 into the mounting groove 112 and to fit tightly with the press-fit wall 1124. In this way, the sealing part 121 can directly fit against the guide wall 1121 after passing through the opening 113. The guide wall 1121 can guide the sealing part 121 to enter the mounting groove 112. In this embodiment, the guide wall 1121 can be set as a quarter arc so that the guide wall 1121 and the extension wall 1122 are smoothly connected. In other embodiments, the guide wall 1121 can also be set as other suitable shapes, and this disclosure does not impose any specific limitations on this.

[0031] The extension wall 1122 extends from the guide wall 1121 away from the injection channel 111, saving the axial arrangement space of the mounting groove 112 in the injection channel 111, and thus saving the axial arrangement space of the mounting component 110 in the injection channel 111. Furthermore, the press-fit wall 1124 is arranged opposite to the extension wall 1122, allowing them to press against opposite sides of the sealing portion 121, causing the sealing portion 121 to be deformed and ensuring its sealing effect. Additionally, by providing a connecting wall 1123 to connect the press-fit wall 1124 and the extension wall 1122, the outer periphery of the installed sealing portion 121 can abut against the connecting wall 1123, preventing a situation where one side of the mounting groove 112 has more sealing portions 121 than the other. In other words, by providing the connecting wall 1123, the sealing portions 121 are evenly distributed in the mounting groove 112, ensuring the sealing effect of the sealing portion 121.

[0032] In this disclosure, in order to further ensure the sealing effect of the seal 120 on the mounting groove 112, as an exemplary embodiment, reference is made to... Figure 2 and Figure 3 As shown, the mounting member 110 may have a bottom wall, and an extension wall 1122 may extend obliquely from the guide wall 1121 toward the opening 113, with an angle between the extension wall 1122 and the bottom wall. That is, the distance between the extension wall 1122 and the press-fit wall 1124 gradually decreases in the direction away from the injection channel 111. Thus, during the installation of the sealing part 121 into the mounting groove 112, it will be gradually pressed between the extension wall 1122 and the press-fit wall 1124, ensuring that the sealing part 120 can be gradually compressed and deformed. The angle between the extension wall 1122 and the bottom wall can be set to 2°~5°.

[0033] Furthermore, the mounting member 110 may have a bottom wall, and the press-fit wall 1124 may extend from the connecting wall 1123 toward the guide wall 1121 along a first direction. The length of the press-fit wall 1124 in the first direction may be greater than or equal to 1 mm. This ensures sufficient contact area between the sealing part 121 and the press-fit wall 1124, so that the sealing part 121 is pressed tightly into the mounting groove 112, preventing the sealing part 121 from dislodging, and improving the assembly reliability between the sealing member 120 and the mounting member 110. The length of the press-fit wall 1124 in the first direction may be less than or equal to 3.5 mm.

[0034] According to a second aspect of this disclosure, a battery is provided, with reference to... Figures 5 to 9As shown, the battery includes a housing 220 and the aforementioned battery filling hole sealing structure. A filling hole 210 is formed on the housing 220. A mounting member 110 is disposed inside the housing 220. A sealing portion 121 passes through the filling hole 210 and seals with the mounting groove 112 to seal the filling hole 210. That is, the mounting member 110 and part of the sealing portion 121 can be disposed inside the housing 220, while the boss 122 and the sealing ring 123 can be disposed outside the housing 220. This facilitates the installation of the sealing member 120 into the mounting member 110 and saves space occupied by the sealing member 120 outside the battery, thereby increasing the volumetric energy density of the battery pack.

[0035] It should be noted that, in one exemplary embodiment, the "injection hole 210" can be constructed as an opening formed on the outer casing 220. This eliminates the need for the processing step of stamping a columnar injection hole on the outer casing 220. Furthermore, compared to a columnar injection hole, the mounting member 110 provided in this disclosure has superior structural strength, ensuring the compression deformation effect of the mounting member 110 on the sealing member 120, thereby ensuring the sealing effect of the sealing member 120. In another exemplary embodiment, the "injection hole 210" can also be constructed as a columnar injection hole stamped on the outer casing. The injection channel 111 can be sleeved on the outer surface of the injection hole 210 and fit against the injection hole 210. In this way, the structural strength of the injection hole 210 can also be improved by the mounting member 110 to ensure the compression deformation effect of the injection hole 210 on the sealing member 120, thereby ensuring the sealing effect of the sealing member 120. In other embodiments, the "injection hole 210" can also be constructed in any suitable manner, and this disclosure does not impose specific limitations on it.

[0036] In the battery provided in this disclosure, in order to facilitate the installation of the mounting member 110, as an exemplary embodiment, reference is made to... Figures 2 to 4As shown, the battery may further include a support frame 310, which can be arranged inside the housing 220 and is provided with a mounting platform 315 and a through hole 314. The mounting member 110 can be fixed to the mounting platform 315, and the through hole 314 communicates with the electrolyte injection channel 111 and is located on the side of the electrolyte injection channel 111 away from the housing 220. The mounting platform 315 can be constructed as a recessed platform extending inward from the surface of the support frame 310, and the shape of the mounting platform 315 is adapted to the shape of the mounting member 110. This facilitates the installation of the mounting member 110, and the support frame 310 further strengthens the structural strength of the mounting member 110. In this embodiment, the mounting platform 315 and the mounting member 110 can be fixedly connected by threads or injection molding. In other embodiments, the mounting platform 315 and the mounting member 110 can also be connected in other suitable ways, and this disclosure does not impose specific limitations on this. Furthermore, the design of the electrolyte injection channel 111 and the through hole 314 facilitates the guidance of electrolyte into the battery interior and prevents electrolyte splashing. In addition, the support frame 310 and the mounting component 110 can be made of PPS with added glass fiber, or the mounting component 110 can be made of PPS with added glass fiber, to ensure the structural strength of the mounting component 110 and the support frame 310.

[0037] In this disclosure, the support frame 310 can be constructed in any suitable manner. As an exemplary embodiment, the support frame 310 includes clearance areas 312 and support areas 313 spaced apart along the length of the battery terminal assembly 230. There are two support areas 313, each positioned on one side of the clearance area 312. The clearance area 312 can accommodate the battery's tabs. Furthermore, the support area 313 may have a support platform that conforms to the inner surface of the housing 220, thereby strengthening the structural strength of the housing 220 and preventing damage during electrolyte filling. Additionally, the support area 313 may also have multiple vertically arranged reinforcing ribs. These ribs can be positioned on the side of the support platform away from the housing 220 to enhance the structural strength of the support area 313. The combination of the reinforcing ribs and the support platform design reduces the weight of the support frame 310, thereby reducing the weight of the battery itself and facilitating heat dissipation.

[0038] In the battery provided in this disclosure, reference Figures 5 to 10 As shown, the battery may also include terminal assembly 230, the number of terminal assemblies 230 may be two, and the two terminal assemblies 230 may be respectively installed at both ends of the housing 220 along the length direction, and the liquid injection hole 210 may be arranged on one side of one of the terminal assemblies 230.

[0039] In the battery provided in this disclosure, in order to facilitate the installation of the support bracket 310, as an exemplary embodiment, reference is made to... Figure 10As shown, the battery may also include an isolation seat 231, which can be disposed within the housing 220. The support frame 310 and the isolation seat 231 can be connected by a plug-in structure, which may include a mating plug-in block 311 and a plug-in slot. One of the support frame 310 and the isolation seat 231 may be provided with a plug-in block 311, and the other with a plug-in slot. In this way, the mounting component 110 is plugged into the isolation seat 231 via the support frame 310, ensuring the reliability of the assembled mounting component 110.

[0040] The insertion slots and insertion blocks 311 can be arranged in any suitable manner. As an exemplary embodiment, refer to... Figure 4 and Figure 10 As shown, the support frame 310 can be provided with a plug-in block 311, and the isolation seat 231 can be provided with a plug-in groove, forming a gap between it and the outer shell 220. The plug-in block 311 can be inserted into the plug-in groove and fit against the outer shell 220. In this way, the assembly between the support frame 310 and the isolation seat 231 can be completed by plugging them in, which is simple to operate. It should be noted that after the isolation seat 231 is provided with a plug-in groove, the aforementioned gap is formed between it and the outer shell 220.

[0041] In this disclosure, the number and position of the insertion slots can be arranged in any suitable manner. There can be two insertion slots, and the two insertion slots can be arranged at opposite ends of the isolation seat 231 so that the isolation seat 231 is T-shaped. In this way, when the support frame 310 is assembled on the isolation seat 231, it can prevent the support frame 310 from detaching from the isolation seat 231 along the first direction and the second direction, thereby ensuring the stability of the support frame 310.

[0042] In the battery provided in this disclosure, the housing 220 can be constructed in any suitable manner. As an exemplary embodiment, reference is made to... Figure 5 As shown, the outer casing 220 may include a first casing 221 and a second casing 222 arranged opposite to each other. The injection port 210 and the terminal assembly 230 may be spaced apart from each other in the first casing 221. The second casing 222 may be constructed as a semi-enclosed structure and has a receiving area 223 recessed towards the first casing 221. Thus, the receiving area 223 is used to accommodate the terminal assembly 230 of another battery when the batteries are assembled into a battery pack, thereby maximizing the utilization of space between adjacent batteries and improving the space utilization rate of the battery pack.

[0043] In this disclosure, there is a gap between the installed support frame 310 and the second housing 222 to prevent assembly interference between the support frame 310 and the second housing 222.

[0044] According to a third aspect of this disclosure, a battery pack is provided, the battery pack including the aforementioned battery.

[0045] According to a fourth aspect of this disclosure, an electrical appliance is provided, the electrical appliance including the aforementioned battery or battery pack.

[0046] In use, the battery filling hole sealing structure provided in this disclosure has the installed mounting member 110 located on one side of the filling hole 210, and the filling channel 111 connected to the filling hole 210. After filling, the sealing member 120 can be installed into the mounting groove 112 from the opening 113, and passes through the guide wall 1121 and the extension wall 1122 in sequence, and is finally pressed between the extension wall 1122 and the press-fit wall 1124 to seal the filling hole 210.

[0047] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0048] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0049] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A battery electrolyte filling hole sealing structure, characterized in that, The battery filling hole sealing structure is used to seal the filling hole and includes: A mounting component, adaptable for installation in the injection hole, the mounting component having a mounting groove and an opening and an injection channel, the opening and the injection channel respectively communicating with the mounting groove; and A seal, a portion of which is inserted from the opening into the mounting groove and seals with the mounting groove.

2. The battery filling hole sealing structure according to claim 1, characterized in that, The sealing element includes a sealing portion and a boss, the boss being disposed over the opening, and the sealing portion being adapted to be inserted into the mounting groove and to fit tightly against the groove wall of the mounting groove.

3. The battery filling hole sealing structure according to claim 2, characterized in that, The sealing part is connected to the boss and is constructed in the shape of an annular cylinder, with the opening of the sealing part gradually widening from the boss.

4. The battery filling hole sealing structure according to claim 2, characterized in that, The sealing element further includes a sealing ring, which is sleeved on the sealing portion and pressed between the boss and the mounting member to seal the opening.

5. The battery filling hole sealing structure according to claim 2, characterized in that, The mounting groove includes a guide wall, an extension wall, a connecting wall, and a press-fit wall connected in sequence. The guide wall is connected to the opening of the injection channel. The extension wall extends from the guide wall away from the injection channel. The press-fit wall is opposite to the extension wall and is connected to the extension wall through the connecting wall. The guide wall is used to guide the sealing part into the mounting groove and to fit tightly with the press-fit wall.

6. The battery filling hole sealing structure according to claim 5, characterized in that, The mounting component has a bottom wall, and an extension wall extends obliquely from the guide wall toward the opening, with an angle formed between the extension wall and the bottom wall.

7. The battery filling hole sealing structure according to claim 5, characterized in that, The mounting component has a bottom wall, and the press-fit wall extends from the connecting wall toward the guide wall in a first direction, the length of the press-fit wall in the first direction being greater than or equal to 1 mm.

8. A battery, characterized in that, The battery includes a housing and a battery filling hole sealing structure according to any one of claims 1-7, wherein the filling hole is formed on the housing, the mounting member is disposed inside the housing, and the sealing part passes through the filling hole and is sealed to the mounting groove to seal the filling hole.

9. The battery according to claim 8, characterized in that, The battery also includes a support frame, which is arranged inside the housing and has a mounting platform and a through hole. The mounting component is fixed to the mounting platform, and the through hole communicates with the liquid injection channel and is located on the side of the liquid injection channel away from the housing.

10. The battery according to claim 9, characterized in that, The battery also includes two terminal assemblies, which are respectively installed at both ends of the housing along its length, and the liquid injection hole is arranged on one side of one of the terminal assemblies.

11. The battery according to claim 9, characterized in that, The battery also includes an isolation seat disposed inside the housing. The support frame is connected to the isolation seat via a plug-in structure. The plug-in structure includes a plug-in block and a plug-in slot that cooperate with each other. One of the support frame and the isolation seat is provided with the plug-in block, and the other is provided with the plug-in slot.

12. The battery according to claim 11, characterized in that, The support frame is provided with the plug-in block, the isolation seat is provided with the plug-in groove and a gap is formed between it and the outer shell, and the plug-in block is inserted into the plug-in groove and fits against the outer shell.

13. A battery pack, characterized in that, The battery pack comprises the battery according to any one of claims 8-12.

14. An electrical appliance, characterized in that, The electrical equipment includes a battery according to any one of claims 8-12 or a battery pack according to claim 13.

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