Sealing assembly of battery liquid injection port

Abstract

The embodiment discloses a sealing assembly of a battery liquid injection port, the sealing assembly of the battery liquid injection port comprises a guide rod, an elastic piece, a sealing nozzle, a sleeve, a mounting plate and an adjusting piece, and one end, extending to the battery liquid injection port, of the guide rod is provided with an abutting part; the sealing nozzle is mounted at one end, extending to the battery liquid injection port, of the abutting part; the elastic piece is wound on the guide rod and is propped against the propping part; the sleeve sleeves the guide rod and is propped against one end, far away from the propping part, of the elastic piece; the adjusting part is arranged on the guide rod, can move in the direction close to or away from the sleeve along the guide rod and abuts against the sleeve, so that the guide rod moves relative to the sleeve, the distance between the abutting part and the sleeve is changed, and the elastic force of the elastic part is adjusted. According to the technical scheme, the elastic force of the elastic piece can be adjusted, the buffering requirement for sealing different battery liquid injection ports is met, meanwhile, the elastic piece can play a buffering role, the sealing nozzle and the battery liquid injection ports can be tightly pressed, and the sealing effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a sealing component of a battery liquid filling port. Background Art

[0002] The battery needs to seal the injection port before and after formation, that is, a plastic nail (usually called a formation nail) is inserted into the injection port after the battery cell is filled, and then the plastic nail is pulled out when the battery is formed, and the plastic nail is inserted again after the formation is completed, and the plastic nail is pulled out again after the static process after formation is completed. At present, the plastic nail cannot be recycled in the process of inserting and pulling the nail from the battery injection port, which will undoubtedly increase the production cost. At the same time, the plastic nail may break during the insertion process, which poses a safety risk. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a sealing assembly for a battery liquid filling port.

[0004] The present application embodiment provides a sealing assembly for a battery liquid filling port, which is used to seal the battery liquid filling port. The sealing assembly for the battery liquid filling port includes:

[0005] A guide rod, wherein one end of the guide rod extending toward the battery liquid filling port is provided with an abutment portion;

[0006] A sealing nozzle, the sealing nozzle is mounted on one end of the abutment portion extending toward the battery liquid filling port, and is used to seal the battery liquid filling port;

[0007] An elastic member, wherein the elastic member is wound around the guide rod, and one end of the elastic member abuts against an end of the abutting portion away from the battery liquid filling port;

[0008] A sleeve, sleeved on the guide rod, and an end of the elastic member away from the abutment portion abuts against the sleeve;

[0009] A mounting plate, wherein one end of the guide rod extending toward the battery liquid filling port passes through the mounting plate, and the outer peripheral surface of the sleeve abuts against the mounting plate;

[0010] An adjusting member is arranged on the guide rod, and the adjusting member can move along the length extension direction of the guide rod toward or away from the sleeve and maintain abutment with the sleeve, so that the abutment portion of the guide rod can move relative to the sleeve to change the distance between the abutment portion and the sleeve to adjust the elastic force of the elastic member.

[0011] In one embodiment, the end of the abutment portion close to the battery filling port is set as a limiting ring, and the end away from the battery filling port is set as the main body of the abutment portion. The limiting ring is located on the side of the abutment portion facing the sealing mouth, and the limiting ring is used to extend into the interior of the sealing mouth and connect with the sealing mouth.

[0012] In one embodiment, the inner wall of the sealing nozzle is provided with a groove along the radial direction of the sealing nozzle for matching with the limiting ring.

[0013] In one embodiment, the end surface of the sealing nozzle abuts against a surface of the main body of the abutting portion facing the sealing nozzle; wherein the diameter of the sealing nozzle is smaller than or equal to the diameter of the main body of the abutting portion.

[0014] In one embodiment, the adjusting member is an adjusting nut;

[0015] An external thread is arranged on the outer surface of the guide rod, and the internal thread of the adjusting nut is meshed with the external thread of the guide rod to realize the threaded connection between the adjusting nut and the guide rod.

[0016] In one embodiment, the lower end surface of the adjusting nut is kept in contact with the sleeve, so that the distance between the sleeve and the contact portion can be changed when the adjusting nut moves along the extending direction of the guide rod.

[0017] In one embodiment, it further includes a first locking member and a second locking member, wherein the first locking member and the second locking member are sleeved on the sleeve, and a mounting position for mounting and fixing the mounting plate is defined between the first locking member and the second locking member.

[0018] In one embodiment, the sleeve is provided with an external thread which is threadably connected to the first locking member and the second locking member.

[0019] In one embodiment, an arc surface is formed on one end of the sealing nozzle extending toward the battery liquid filling port.

[0020] In one embodiment, the sealing nozzle is made of EPDM rubber.

[0021] Compared with the prior art, the above technical solution provided by the embodiment of the present application has the following beneficial effects:

[0022] The elastic member is wound around the guide rod, and an abutment portion is provided at one end of the guide rod extending toward the battery filling port, and then the sleeve is sleeved on the guide rod so that the two ends of the elastic member are respectively abutted by the sleeve and the abutment portion. When it is necessary to adjust the elastic force of the elastic member, the adjusting member is adjusted to move closer to or away from the sleeve in the extension direction of the guide rod length and keep abutting with the sleeve, so that the abutment portion of the guide rod can move relative to the sleeve, that is, the distance between the abutment portion and the sleeve is changed, so that during the movement of the guide rod, the elastic member abutted by the abutment portion and the sleeve at both ends are continuously squeezed and deformed, thereby achieving adjustment of the elastic force of the elastic member to meet the requirements for sealing different battery filling ports, and the setting of the elastic member can play a buffering role, so that the sealing nozzle and the battery filling port can be tightly pressed together, which is beneficial to improving the sealing effect and also can avoid breakage during the sealing process; in addition, the sealing nozzle installed at the abutment portion does not need to be inserted into the battery filling port, only part of the sealing nozzle is inserted into the battery filling port, which can also effectively avoid breakage during the sealing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structural installation of a sealing assembly for a battery liquid filling port of the present application;

[0024] Figure 2 This is a front view of a sealing assembly of a battery liquid filling port of the present application;

[0025] Figure 3 This is a structural schematic diagram of a sealing component of a battery liquid filling port of the present application from another perspective;

[0026] Figure 4 This is a schematic structural diagram of a sealing assembly of a battery liquid filling port of the present application with the sealing nozzle removed;

[0027] Figure 5 is a cross-sectional view of a sealing assembly of a battery liquid filling port of the present application;

[0028] Figure 6 It is a structural schematic diagram of another embodiment of a sealing assembly for a battery liquid filling port of the present application;

[0029] Figure 7 This is a structural schematic diagram of a sealing component of a battery filling port of the present application installed behind a mounting plate.

[0030] Numbers in the figure:

[0031] 10. Guide rod; 20. Abutment portion; 30. Sleeve; 40. Elastic member; 50. Sealing nozzle; 50a. Slot; 60. Mounting plate; 60a. Mounting hole; 70. Adjusting member; 70a. Adjusting nut; 80. Limiting ring; 90. First locking member; 100. Second locking member; c. Mounting position; x. First direction. DETAILED DESCRIPTION

[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0033] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] Please refer to Figure 1 and Figure 2 An embodiment of the present application provides a sealing assembly for a battery filling port, which is used to seal the battery filling port. The sealing assembly for the battery filling port includes a guide rod 10, a sleeve 30, an elastic member 40, a sealing nozzle 50, a mounting plate 60 and an adjusting member 70.

[0035] Specifically, the end of the guide rod 10 extending toward the battery filling port is provided with an abutment portion 20; the sealing nozzle 50 is installed at the end of the abutment portion 20 extending toward the battery filling port, and is used to seal the battery filling port; the elastic member 40 is wound around the guide rod 10, and one end of the elastic member 40 abuts against the end of the abutment portion 20 away from the battery filling port; the sleeve 30 is sleeved on the guide rod 10, and the end of the elastic member 40 away from the abutment portion 20 abuts against the sleeve 30; the guide rod 10 extends toward One end of the battery filling port passes through the mounting plate 60, and the outer peripheral surface of the sleeve 30 abuts against the mounting plate 60; the adjusting member 70 is provided on the guide rod 10, and the adjusting member 70 can move along the extension direction of the guide rod length toward or away from the sleeve 30 and maintain abutment with the sleeve 30, so that the abutting portion 20 of the guide rod 10 can move relative to the sleeve 30 to change the distance between the abutting portion 20 and the sleeve 30 to adjust the elastic force of the elastic member 40.

[0036] For example, the length extension direction of the guide rod 10 can be specifically referred to Figure 1 The X direction in is not limited to this X direction.

[0037] For example, the abutment portion 20 and the guide rod 10 can be fixed by an integral injection molding connection method, so that the formed whole has better strength and can avoid breakage during the sealing process of the battery liquid injection port. Those skilled in the art will understand that the above connection method is only an example and is not limited thereto.

[0038] In addition, the abutment portion 20 is used to abut against the elastic member 40, so that in the process of sealing the liquid filling port, when the sealing nozzle 50 encounters resistance, the two ends of the elastic member 40 will be abutted by the sleeve 30 and the abutment portion 20, and in the process of the guide rod 10 moving upward due to the resistance, the elastic member 40 is squeezed and deformed, which can play a buffering role, so that the sealing nozzle 50 and the battery filling port can be tightly pressed together, which is beneficial to improve the sealing effect and avoid breakage during the sealing process; because the elastic member 40 has a certain compression stroke, it can also be suitable for battery filling ports of different heights.

[0039] For example, the sealing nozzle 50 can be detachably mounted at one end of the abutment portion 20 extending toward the battery liquid filling port, so that the damaged sealing nozzle 50 can be quickly removed from the abutment portion 20 for quick replacement without replacing the entire sealing assembly, which is beneficial for cost saving. There is no specific limitation on the detachable connection structure of the sealing nozzle 50, and any commonly used structure by those skilled in the art is applicable to the present application.

[0040] In addition, the sealing nozzle 50 needs to be able to produce a certain deformation so that the sealing nozzle 50 can be deformed when sealing to form a better sealing effect on the battery filling port. At the same time, the sealing nozzle 50 also needs to have good corrosion resistance to avoid being corroded by the odor emitted by the battery liquid and affecting the sealing performance.

[0041] It should be noted that when the sealing assembly of the battery filling port is in use, the guide rod 10 can move relative to the sleeve 30, that is, when the sealing nozzle 50 is subject to resistance, the guide rod 10 can move relative to the sleeve 30, that is, the distance between the abutment portion 20 of the guide rod 10 and the sleeve 30 is changed, so that the elastic member 40 is squeezed and deformed, which can play a certain buffering role.

[0042] Exemplarily, the elastic member 40 may be a spring, or a component with elastic buffering in the prior art that can be understood by those skilled in the art, and this is not limited.

[0043] Exemplarily, the mounting plate 60 is used to be connected to the sleeve 30, so that when the adjusting member 70 is used to move the guide rod 10 relative to the sleeve 30, the mounting plate 60 can provide a support point for fixing the sleeve 30, ensuring that the guide rod 10 can move relative to the sleeve 30, thereby adjusting the elastic force of the elastic member 40. In addition, in order to facilitate the adjustment of the sealing assembly to a position aligned with the battery injection port according to the position of the battery, a mounting hole 60a extending along the length direction of the mounting plate 60 is provided on the mounting plate 60, so that the sealing assembly can be moved along the length direction of the mounting plate 60 according to the position of the battery injection port.

[0044] It should be noted that the compression stroke of the elastic member 40 may be adjusted in the following ways, but not limited to:

[0045] Exemplarily, by holding the sealing nozzle 50 with one hand and twisting the adjusting member 70 with the other hand, the guide rod 10 does not rotate relative to the sleeve 30, so as to ensure that the adjusting member 70 can be twisted to push the guide rod 10 to move relative to the sleeve 30, thereby adjusting the compression stroke of the elastic member 40;

[0046] Exemplarily, a force is applied to the sealing nozzle 50 along the X direction so that the guide rod 10 can move relative to the sleeve 30 until the compression stroke of the elastic member 40 is adjusted to a suitable position, and then the adjustment member 70 is inserted into the guide rod 10 and tightened so that the guide rod 10 is fixed and does not move, thereby achieving the adjustment of the compression stroke of the elastic member 40.

[0047] In the sealing assembly of the battery filling port based on the above technical features, the elastic member 40 is wound around the guide rod 10, and the abutment portion 20 is provided at one end of the guide rod 10 extending toward the battery filling port, and then the sleeve 30 is sleeved on the guide rod 10, so that the two ends of the elastic member 40 are respectively abutted by the sleeve 30 and the abutment portion 20. When it is necessary to adjust the compression stroke of the elastic member 40, the adjusting member 70 is adjusted to move closer to or away from the sleeve 30 in the length extension direction of the guide rod 10 and maintain abutment with the sleeve 30, so that the abutment portion 20 of the guide rod 10 can move relative to the sleeve 30, that is, the distance between the abutment portion 20 and the sleeve 30 is changed, so that in the guide rod 10, the abutment portion 20 of the guide rod 10 can be moved relative to the sleeve 30, that is, the distance between the abutment portion 20 and the sleeve 30 is changed, so that During the movement of the rod 10, the elastic member 40, which is respectively abutted by the abutting portion 20 and the sleeve 30 at both ends, is continuously squeezed and deformed, so that the compression stroke of the elastic member 40 can be adjusted to meet the buffering requirements when sealing different battery filling ports, and the setting of the elastic member 40 can play a buffering role, so that the sealing nozzle 50 and the battery filling port can be tightly pressed together, which is beneficial to improve the sealing effect and also can avoid breakage during the sealing process; in addition, the sealing nozzle 50 installed on the abutting portion 20 does not need to be inserted into the battery filling port, only part of the sealing nozzle 50 is inserted into the battery filling port, which can also effectively avoid breakage during the sealing process.

[0048] Please refer to Figure 4 In one embodiment, a limiting ring 80 is provided at one end of the guide rod 10 extending toward the battery filling port, and the end away from the battery filling port is set as the main body of the abutment part 20. The limiting ring 80 is located on the side of the abutment part 20 facing the sealing nozzle 50, and the limiting ring 80 is used to extend into the interior of the sealing nozzle 50 and connect with the sealing nozzle 50.

[0049] Exemplarily, the limiting ring 80 is integrally connected to one end of the abutting portion 20 of the guide rod 10 extending toward the battery filling port, so that the formed whole has better strength and can avoid breakage during the sealing process of the filling port.

[0050] In this embodiment, a limiting ring 80 is provided at one end of the abutting portion 20 of the guide rod 10 extending toward the battery filling port, so that when the sealing nozzle 50 is installed on the abutting portion 20 of the guide rod 10, the limiting ring 80 can extend into the sealing nozzle 50, thereby realizing a fixed connection between the sealing nozzle 50 and the abutting portion 20 of the guide rod 10; when the sealing nozzle 50 needs to be replaced, it only needs to be pulled out of the limiting ring 80 from the sealing nozzle 50 to realize disassembly, and the structure is simple and easy to disassemble and assemble.

[0051] Please refer to Figure 5 In one embodiment, the inner wall of the sealing nozzle 50 is provided with a groove 50a for matching with the limiting ring 80 along the radial direction of the sealing nozzle 50. Exemplarily, in order to prevent the limiting ring 80 from being loosened during use after being inserted into the sealing nozzle 50, the present embodiment provides the groove 50a along the radial direction of the sealing nozzle 50 on the inner wall of the sealing nozzle 50 so that the limiting ring 80 inserted into the sealing nozzle 50 is inserted into the groove 50a, thereby preventing the limiting ring 80 from being loosened during use.

[0052] It should be noted that the sealing nozzle 50 in this embodiment is made of a material with a certain elastic deformation. When the sealing nozzle 50 needs to be removed from the abutment portion 20 of the guide rod 10, the sealing nozzle 50 can be pried along both sides of the abutment portion 20 of the guide rod 10 to allow the limiting ring 80 to be disengaged from the groove 50a, thereby realizing the disassembly of the sealing nozzle 50, which is easy to operate.

[0053] In one embodiment, the end surface of the sealing nozzle 50 abuts against the surface of the main body of the abutting portion 20 facing the sealing nozzle 50 ; wherein the diameter of the sealing nozzle 50 is smaller than or equal to the diameter of the main body of the abutting portion 20 .

[0054] Exemplarily, after the sealing nozzle 50 is installed on the guide rod 10, the end face of the sealing nozzle 50 will abut against the surface of the main body of the abutment part 20 facing the sealing nozzle 50, so that after the sealing nozzle 50 encounters resistance, the main body of the abutment part 20 will be subjected to an upward thrust, thereby pushing the guide rod 10 to move relative to the sleeve 30, so that the elastic part 40 is squeezed and deformed, which can play a certain buffering role, ensuring the close contact between the sealing nozzle 50 and the battery filling port, which is beneficial to improving the density effect.

[0055] In addition, if the diameter of the sealing nozzle 50 is larger than the diameter of the main body of the abutment portion 20, the abutment portion 20 will be wrapped when the sealing nozzle 50 is installed on the guide rod 10, so that after the sealing nozzle 50 encounters resistance, the sealing nozzle 50 is easy to move upward, resulting in poor sealing effect and damage to the sealing nozzle 50. In this embodiment, preferably, the diameter of the sealing nozzle 50 is equal to the diameter of the main body of the abutment portion 20, so that when the sealing nozzle 50 encounters resistance, the sealing nozzle 50 is limited by the main body of the abutment portion 20 and is not easy to move.

[0056] In one embodiment, the adjusting member 70 is an adjusting nut 70a; an external thread is provided on the outer surface of the guide rod 10, and the internal thread of the adjusting nut 70a meshes with the external thread of the guide rod 10 to achieve a threaded connection between the adjusting nut 70a and the guide rod 10. In this way, by providing an external thread on the outer surface of the guide rod 10, the adjusting nut 70a can be threadedly connected to the guide rod 10. When the compression stroke of the elastic member 40 needs to be changed, the position of the adjusting nut 70a on the guide rod 10 can be adjusted by twisting the adjusting nut 70a, thereby pushing the guide rod 10 to move relative to the sleeve 30 in the first direction to change the compression stroke of the elastic member 40. The structure is simple and the adjustment is convenient.

[0057] In one embodiment, the lower end surface of the adjusting nut 70a is kept in contact with the sleeve 30, so that when the adjusting nut 70a moves along the length extension direction of the guide rod 10, the guide rod 10 moves in the first direction relative to the sleeve 30. In this way, it can be ensured that when the position of the adjusting nut 70a on the guide rod 10 is adjusted, the guide rod 10 can be pushed to move in the first direction relative to the sleeve 30 in time, which can effectively save adjustment time compared to the method that needs to be adjusted to contact with the sleeve 30.

[0058] Please refer to Figure 6 and Figure 7 In one embodiment, it also includes a first locking member 90 and a second locking member 100, which are sleeved on the sleeve 30, and an installation position c for installing and fixing the installation plate 60 is defined between the first locking member 90 and the second locking member 100.

[0059] In one embodiment, before sealing the battery filling port, the sealing assembly needs to be installed on the mounting plate 60, that is, a mounting hole 60a is opened on the mounting plate 60, and then the second locking member 100 is first sleeved on the sleeve 30, and then the guide rod 10 is passed through the mounting hole 60a from the bottom of the mounting plate 60, and then the first locking member 90 is sleeved on the sleeve 30. At this time, the first locking member 90 and the second locking member 100 are respectively abutted against the upper surface and the lower surface of the mounting plate 60, thereby realizing the fixed installation of the sealing assembly, with a simple structure and convenient disassembly and assembly.

[0060] In addition, it should be noted that after the sealing assembly is installed on the mounting plate 60, when the sealing nozzle 50 encounters resistance, the sleeve 30 is restricted by the first locking member 90 and the second locking member 100 and cannot move. Only the guide rod 10 moves along the first direction relative to the sleeve 30, thereby achieving the extrusion of the elastic member 40.

[0061] In one embodiment, the sleeve 30 is provided with an external thread threadedly connected to the first locking member 90 and the second locking member 100. In this way, the first locking member 90 and the second locking member 100 can be easily removed from the sleeve 30, and the subsequent disassembly of the guide rod 10 is convenient.

[0062] In one embodiment, an arc surface is formed on one end of the sealing nozzle 50 extending toward the battery liquid filling port.

[0063] Exemplarily, the arc surface is formed at one end of the sealing nozzle 50 extending toward the battery filling port in order to better contact closely with the battery filling port, which is beneficial to improving the sealing effect.

[0064] In one embodiment, the sealing nozzle 50 is made of EPDM rubber.

[0065] Since the EPDM rubber material has good corrosion resistance and elasticity, the sealing nozzle 50 can be deformed to press tightly against the battery filling port, and is not easily damaged by corrosive gases, which can save costs.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A sealing assembly for a battery liquid filling port, used for sealing a battery liquid filling port, characterized in that: The sealing assembly of the battery filling port comprises: A guide rod (10), wherein one end of the guide rod (10) extending toward the battery liquid filling port is provided with an abutment portion (20); A sealing nozzle (50), the sealing nozzle (50) being mounted on one end of the abutment portion (20) extending toward the battery liquid filling port, and being used to seal the battery liquid filling port; An elastic member (40), wherein the elastic member (40) is wound around the guide rod (10), and one end of the elastic member (40) abuts against an end of the abutting portion (20) away from the battery liquid filling port; A sleeve (30) is sleeved on the guide rod (10), and one end of the elastic member (40) away from the abutment portion (20) abuts against the sleeve (30); A mounting plate (60), wherein one end of the guide rod (10) extending toward the battery liquid injection port passes through the mounting plate (60), and the outer peripheral surface of the sleeve (30) abuts against the mounting plate (60); An adjusting member (70) is arranged on the guide rod (10), and the adjusting member (70) can move along the length extension direction of the guide rod (10) in a direction close to or away from the sleeve (30) and maintain abutment with the sleeve (30), so that the abutment portion (20) of the guide rod (10) can move relative to the sleeve (30) to change the distance between the abutment portion (20) and the sleeve (30) to adjust the elastic force of the elastic member (40).

2. The sealing assembly for the battery liquid filling port according to claim 1, characterized in that: The end of the abutment portion (20) close to the battery filling port is set as a limiting ring (80), and the end away from the battery filling port is set as the main body of the abutment portion (20). The limiting ring (80) is located on the side of the abutment portion (20) facing the sealing nozzle (50), and the limiting ring (80) is used to extend into the interior of the sealing nozzle (50) and connect with the sealing nozzle (50).

3. The sealing assembly for the battery filling port according to claim 2, characterized in that: The inner wall of the sealing nozzle (50) is provided with a groove (50a) along the radial direction of the sealing nozzle (50) for matching with the limiting ring (80).

4. The sealing assembly for a battery liquid filling port according to any one of claims 1 to 3, characterized in that: The end face of the sealing nozzle (50) abuts against the surface of the main body of the abutment portion (20) facing the sealing nozzle (50); wherein the diameter of the sealing nozzle (50) is smaller than or equal to the diameter of the main body of the abutment portion (20).

5. The sealing assembly for a battery liquid filling port according to any one of claims 1 to 3, characterized in that: The adjusting member (70) is an adjusting nut (70a); An external thread is provided on the outer surface of the guide rod (10), and the internal thread of the adjusting nut (70a) meshes with the external thread of the guide rod (10) to achieve a threaded connection between the adjusting nut (70a) and the guide rod (10).

6. The sealing assembly for the battery liquid filling port according to claim 5, characterized in that: The lower end surface of the adjusting nut (70a) is kept in contact with the sleeve (30), so that when the adjusting nut (70a) moves along the length extension direction of the guide rod (10), the distance between the sleeve (30) and the contact portion (20) can be changed.

7. The sealing assembly for the battery liquid filling port according to claim 1, characterized in that: The invention also comprises a first locking member (90) and a second locking member (100), wherein the first locking member (90) and the second locking member (100) are sleeved on the sleeve (30), and a mounting position (C) for mounting and fixing the mounting plate (60) is defined between the first locking member (90) and the second locking member (100).

8. The sealing assembly for the battery liquid filling port according to claim 7, characterized in that: The sleeve (30) is provided with an external thread which is threadably connected to the first locking member (90) and the second locking member (100).

9. The sealing assembly for the battery liquid filling port according to claim 1, characterized in that: An arc surface is formed on one end of the sealing nozzle (50) extending toward the battery liquid filling port.

10. The sealing assembly for the battery liquid filling port according to claim 1, characterized in that: The sealing nozzle (50) is made of EPDM rubber.

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