Airtight tool

Abstract

The utility model discloses an airtight tool and relates to the technical field of battery tools. The airtight tool comprises a handheld assembly, a base, a transmission assembly and a sealing assembly. The handheld assembly is installed on the base and connected with the transmission assembly so as to drive the transmission assembly to drive the sealing assembly to move. The transmission assembly is connected with the sealing assembly; the base comprises a connecting part, and the connecting part is used for being detachably connected with the battery pack; the sealing assembly is provided with an airflow groove and an airflow connector communicated with the airflow groove. The airflow groove is configured to be communicated with the interface of the battery pack when the sealing assembly is attached to the interface of the battery pack, and the airflow interface is configured to be connected with an airtight tester, so that the airtight tester injects gas into the battery pack through the airflow interface and the airflow groove in sequence. The utility model aims to provide the airtight tool which can ventilate and seal, is simpler in structure, simpler and more convenient to operate, lower in cost and stronger in practicability, can effectively improve the airtight test efficiency, and still has better sealing reliability after being used for many times.

Description

Technical Field

[0001] The utility model relates to the technical field of battery tooling, in particular to an airtight tooling. Background Art

[0002] In today's society, the new energy electric vehicle industry is rapidly rising. As the core component of new energy power vehicles, power batteries are widely used. Under the background, various car companies also have higher and higher demands for them. After assembling the battery pack, the battery pack needs to be tested for airtightness. The airtightness directly affects the working safety of the battery system. The battery pack box has a variety of plug-ins for external connection and explosion-proof valves that can be used to connect to the airtight tester for inflation. Generally, it is through inflation, voltage stabilization, detection, and then the gas pressure and volume changes are detected. Through a series of sampling, calculation and analysis, the leakage rate and leakage value are obtained, and PASS (pass) or NG (restart) is judged based on these data. During the test, only one air inlet of the battery pack is connected to the airtight tester through the plug-in, and the other interfaces of the battery pack need to be blocked to ensure the airtightness, so as to improve the efficiency, accuracy and reliability of the test. The existing conventional solution is: the airtight tester adopts the method of sealing the plug-in by gluing and sealing; however, this solution is not easy to operate manually, affects the test efficiency, and after multiple uses, the plug-in and the battery pack plug-in are easy to damage and it is difficult to ensure the sealing. Utility Model Content

[0003] The purpose of the utility model is to provide an airtight tooling to solve the technical problems existing in the prior art that connection by gluing and sealing causes difficulty in manual operation, affects test efficiency, and is difficult to ensure sealing due to easy damage after repeated use.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An airtight tooling, used to connect an airtight tester to an interface of a battery pack to perform airtightness testing on the battery pack, comprising a handheld component, a base, a transmission component and a sealing component;

[0006] The handheld component is mounted on the base and connected to the transmission component. Applying external force to the handheld component can cause the handle of the handheld component to rotate relative to the base, thereby driving the transmission component to drive the sealing component to move;

[0007] One end of the transmission assembly away from the handheld assembly is connected to the sealing assembly;

[0008] The base includes a connecting portion, and the connecting portion is used to be detachably connected to the battery pack;

[0009] The sealing assembly is provided with an airflow groove and an airflow interface connected to the airflow groove, and the notch of the airflow groove faces away from the transmission assembly; the airflow groove is configured to be connected to the interface of the battery pack when the sealing assembly is in contact with the interface of the battery pack, and the airflow interface is configured to be connected to the airtightness tester so that the airtightness tester can inject gas into the battery pack via the airflow interface and the airflow groove in sequence.

[0010] In any of the above technical solutions, optionally, the transmission assembly includes a transmission shaft, a sliding seat and an elastic member;

[0011] The sliding seat is connected to the sealing assembly; the elastic member is arranged in the sliding seat and one end of the elastic member abuts against the sealing assembly;

[0012] One end of the transmission shaft is connected to the handheld component, and the other end is passed through the sliding seat and connected to the elastic member;

[0013] The transmission shaft is configured to be able to slide along the axial direction of the sliding seat to drive the elastic member to undergo elastic deformation and push the sealing assembly to move to the interface of the battery pack and be sleeved on the outer periphery of the interface of the battery pack to seal the interface of the battery pack.

[0014] In any of the above technical solutions, optionally, the sliding seat is provided with a through hole, a part of the transmission shaft is passed through the through hole and abuts against an end of the elastic member away from the sealing assembly, and the elastic member is accommodated in the through hole.

[0015] In any of the above technical solutions, optionally, the sliding seat is provided with a stop edge for preventing the transmission shaft from escaping; and the transmission shaft is provided with a transmission protrusion that cooperates with the stop edge.

[0016] In any of the above technical solutions, optionally, the airtight tooling further includes a guide member;

[0017] One end of the guide is connected to the sealing assembly, and the other end passes through the base and is slidably connected to the base. The sliding direction of the guide is parallel to the moving direction of the sealing assembly.

[0018] In any of the above technical solutions, optionally, the number of the guide members is two; along a direction perpendicular to the movement direction of the sealing assembly, the two guide members are arranged on both sides of the transmission assembly;

[0019] A linear bearing is connected between the guide member and the base.

[0020] In any of the above technical solutions, optionally, the sealing assembly includes a cover body and a sealing member;

[0021] The cover body has a first surface and a second surface corresponding to each other, and a side wall connected to the first surface and the second surface; the first surface is connected to the transmission assembly, the notch of the airflow groove is arranged on the second surface, and the airflow groove is recessed in the cover body along the direction from the second surface to the first surface, and the airflow interface is arranged on the side wall;

[0022] The sealing member is connected to the second surface and is disposed on the periphery of the air flow groove.

[0023] In any of the above technical solutions, optionally, the airflow interface is connected to an air pipe; one end of the air pipe away from the airflow interface is configured to be connected to the airtightness tester, and a hand sliding valve is provided on the air pipe.

[0024] In any of the above technical solutions, optionally, the base further includes a main body; the connecting portion is detachably connected to the main body;

[0025] The handheld component is connected to the main body;

[0026] The connecting portion extends along a moving direction of the sealing assembly, and an end of the connecting portion away from the main body portion is used for detachable connection with the battery pack.

[0027] In any of the above technical solutions, optionally, a hook structure is provided at one end of the connecting portion away from the main body portion; the hook structure is used to be detachably connected to the battery pack, and the opening direction of the hook structure intersects with the moving direction of the sealing assembly.

[0028] The beneficial effects of the utility model are mainly:

[0029] The airtight tool provided by the utility model is detachably connected to the battery pack through the connection part of the base, so that the airtight tool can be installed on the battery pack; the handheld component drives the transmission component to drive the sealing component to move, so that the sealing component fits the battery pack, and then the airflow groove of the sealing component is connected to the interface of the battery pack, so that the airtight tester can inject gas into the battery pack through the airflow interface and the airflow groove of the sealing component in turn. The airtight tool can both ventilate and seal, and its structure is relatively simple, the operation is relatively simple, the cost is relatively low, and the practicality is relatively strong. It can effectively improve the efficiency of airtight testing, and the sealing reliability is still relatively good after multiple uses.

[0030] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of the airtight tooling provided in the embodiment of the utility model;

[0033] Figure 2 An exploded view of the airtight tooling provided in the embodiment of the utility model;

[0034] Figure 3 A front view of the airtight tooling provided in the embodiment of the utility model;

[0035] Figure 4 for Figure 3 AA sectional view of the airtight tooling shown;

[0036] Figure 5 A schematic diagram of the structure of a handheld assembly provided in an embodiment of the utility model;

[0037] Figure 6 An exploded view of a handheld assembly provided in an embodiment of the utility model;

[0038] Figure 7 A schematic diagram of the structure of the airtight tooling provided in the embodiment of the utility model applied to a battery pack;

[0039] Figure 8 for Figure 7 An enlarged view of area B of the airtight tooling is shown.

[0040] Icons: 100-handheld assembly; 110-handle portion; 120-handheld connecting portion; 130-handheld base portion; 140-handheld rod portion; 200-base; 210-main body portion; 220-connecting portion; 221-hook structure; 300-transmission assembly; 310-transmission shaft; 311-transmission protrusion; 320-sliding seat; 321-stop edge; 330-elastic member; 500-guide member; 510-linear bearing; 600-battery pack plug-in; 800-sealing assembly; 810-seal; 820-cover body; 821-air flow groove; 822-air flow interface; 900-air pipe; 910-hand sliding valve; 980-battery pack. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be connected, detachably connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0048] Example

[0049] This embodiment provides an airtight tool for connecting an airtight tester to an interface of a battery pack 980 to perform an airtightness test on the battery pack 980 , for example, for performing a high-voltage airtightness test on the battery pack.

[0050] See also Figure 1-Figure 8 As shown, the airtight tooling includes a handheld component 100 , a base 200 , a transmission component 300 and a sealing component 800 .

[0051] The handheld assembly 100 is mounted on the base 200 and connected to the transmission assembly 300. Applying external force to the handheld assembly 100 can cause the handle of the handheld assembly 100 to rotate relative to the base 200, thereby driving the transmission assembly 300 to drive the sealing assembly 800 to move.

[0052] One end of the transmission assembly 300 away from the handheld assembly 100 is connected to the sealing assembly 800 .

[0053] The base 200 includes a connecting portion 220 , which is used to be detachably connected to the battery pack 980 so as to install the airtight tooling on the battery pack 980 .

[0054] The sealing assembly 800 is provided with an airflow groove 821 and an airflow interface 822 connected to the airflow groove 821, and the groove of the airflow groove 821 faces away from the transmission assembly 300; the airflow groove 821 is configured to be connected to the interface of the battery pack 980 when the sealing assembly 800 and the interface of the battery pack 980 are in contact, and the airflow interface 822 is configured to be connected to an airtight tester so that the airtight tester injects gas into the battery pack 980 via the airflow interface 822 and the airflow groove 821 in sequence.

[0055] The airtight tooling described in this embodiment is detachably connected to the battery pack 980 through the connection portion 220 of the base 200, so that the airtight tooling can be installed on the battery pack 980; the handheld component 100 drives the transmission component 300 to drive the sealing component 800 to move, so that the sealing component 800 fits with the battery pack 980, and then the airflow groove 821 of the sealing component 800 is connected with the interface of the battery pack 980, so that the airtight tester can inject gas into the battery pack 980 through the airflow interface 822 and the airflow groove 821 of the sealing component 800 in turn. The airtight tooling can both ventilate and seal, has a relatively simple structure, is relatively easy to operate, is relatively low in cost, is highly practical, can effectively improve the efficiency of airtight testing, and has good sealing reliability after multiple uses.

[0056] See also Figure 1-Figure 4 As shown, in an optional solution of this embodiment, the transmission assembly 300 includes a transmission shaft 310, a sliding seat 320 and an elastic member 330. The sliding seat 320 is connected to the sealing assembly 800; for example, the sliding seat 320 and the sealing assembly 800 are connected by screw connection, bonding, etc. The elastic member 330 is arranged in the sliding seat 320, and one end of the elastic member 330 abuts against the sealing assembly 800.

[0057] One end of the transmission shaft 310 is connected to the handheld component 100, and the other end of the transmission shaft 310 is passed through the sliding seat 320 and connected to the elastic member 330; for example, the transmission shaft 310 is connected to the handheld component 100 by screwing, clamping, bonding, etc.

[0058] The transmission shaft 310 is configured to be able to slide along the axial direction of the sliding seat 320, so as to drive the elastic member 330 to undergo elastic deformation and push the sealing assembly 800 to move to the interface of the battery pack 980, and to make the sealing assembly 800 sleeved on the outer periphery of the interface of the battery pack 980 to seal the interface of the battery pack 980. The airtight tooling described in this embodiment adopts the transmission assembly 300 having the transmission shaft 310, the sliding seat 320 and the elastic member 330, so that the transmission assembly 300 can well transmit the force from the handheld assembly 100 to the sealing assembly 800; in addition, the elastic member 330 can also drive the handheld assembly 100 to reset by driving the transmission shaft 310.

[0059] See also Figure 4 As shown, in an optional scheme of the present embodiment, the sliding seat 320 is provided with a through hole, a portion of the transmission shaft 310 is passed through the through hole and abuts against an end of the elastic member 330 away from the sealing assembly 800, and the elastic member 330 is accommodated in the through hole; by providing a through hole on the sliding seat 320 to accommodate the elastic member 330, the movement and deformation of the elastic member 330 in the radial direction of the through hole can be limited to a certain extent, which helps the elastic deformation of the elastic member 330 in the axial direction of the through hole, thereby facilitating the driving of the transmission shaft 310 to drive the handheld assembly 100 to reset.

[0060] See also Figure 4 As shown, in an optional solution of this embodiment, the sliding seat 320 is provided with a stop edge 321 for preventing the transmission shaft 310 from being separated; the transmission shaft 310 is provided with a transmission protrusion 311 that cooperates with the stop edge 321. The stop edge 321 cooperates with the transmission protrusion 311 to effectively prevent the transmission shaft 310 from being separated from the sliding seat 320.

[0061] Optionally, the stop edge 321 is arranged at the opening of the through hole of the sliding seat 320 .

[0062] See also Figure 1-Figure 3As shown, in an optional solution of this embodiment, the airtight tooling further includes a guide member 500. One end of the guide member 500 is connected to the sealing assembly 800, and the other end of the guide member 500 passes through the base 200 and is slidably connected to the base 200, and the sliding direction of the guide member 500 is parallel to the moving direction of the sealing assembly 800. The guide member 500 can improve the stability of the movement of the sealing assembly 800 to a certain extent. Optionally, the guide member 500 is connected to the sealing assembly 800.

[0063] In an optional solution of this embodiment, the number of guide members 500 is two; along a direction perpendicular to the movement direction of the sealing assembly 800, the two guide members 500 are arranged on both sides of the transmission assembly 300; by respectively arranging guide members 500 on both sides of the transmission assembly 300, the stability of the movement of the sealing assembly 800 can be further improved.

[0064] Optionally, a linear bearing 510 is connected between the guide member 500 and the base 200. The linear bearing 510 can reduce the friction resistance between the guide member 500 and the base 200, which helps the guide member 500 and the base 200 to be slidably connected.

[0065] See also Figure 1-Figure 4 As shown, in an optional solution of this embodiment, the sealing assembly 800 includes a cover 820 and a sealing member 810. The cover 820 has a first surface and a second surface corresponding to each other, and also has a side wall connected to the first surface and the second surface; the first surface is connected to the transmission assembly 300, the notch of the airflow groove 821 is arranged on the second surface, and the airflow groove 821 is recessed in the cover 820 along the direction from the second surface to the first surface, and the airflow interface 822 is arranged on the side wall; the sealing member 810 is connected to the second surface, and the sealing member 810 is arranged on the periphery of the airflow groove 821. Through the cover 820, the sealing assembly 800 is better connected to the transmission assembly 300 and the guide member 500; through the sealing member 810, the sealing performance between the sealing assembly 800 and the battery pack 980 is improved.

[0066] Optionally, the sealing member 810 is made of rubber, silicone, etc. The sealing member 810 has a certain amount of compression, which is used to compensate for the flatness error, and has the advantages of good sealing effect and stable sealing performance.

[0067] See also Figure 1 and Figure 2As shown, in the optional solution of this embodiment, the airflow interface 822 is connected to the air pipe 900; the end of the air pipe 900 away from the airflow interface 822 is configured to be connected to the airtight tester; and the air pipe 900 is provided with a hand sliding valve 910. The hand sliding valve 910 is used to control the on-off of the air pipe 900, thereby facilitating the on-off of the air path between the airtight tester and the airflow interface 822, and also facilitating the on-off of the air path between the airtight tester and the airtight tooling, thereby achieving the blocking and ventilation of the interface of the battery pack 980.

[0068] See also Figure 1-Figure 3 As shown, in an optional solution of this embodiment, the base 200 includes a body portion 210 and a connecting portion 220; the connecting portion 220 is detachably connected to the body portion 210; the handheld component 100 is connected to the body portion 210; the connecting portion 220 extends along the moving direction of the sealing component 800, and the end of the connecting portion 220 away from the body portion 210 is used for detachable connection with the battery pack 980. The base 200 described in this embodiment is convenient for connecting the base 200 to the handheld component 100 and the base 200 to the guide member 500 through the body portion 210; the base 200 is detachably connected to the battery pack 980 through the connecting portion 220, so that the airtight tooling can be installed on the battery pack 980.

[0069] See also Figure 1-Figure 4 As shown, in an optional solution of this embodiment, a hook structure 221 is provided at one end of the connection portion 220 away from the main body portion 210; the hook structure 221 is used for detachable connection with the battery pack 980, and the opening direction of the hook structure 221 intersects with the moving direction of the sealing assembly 800. Optionally, the opening direction of the hook structure 221 is perpendicular to the moving direction of the sealing assembly 800. The hook structure 221 greatly improves the convenience of detachable connection between the connection portion 220 and the battery pack 980.

[0070] Optionally, there are two connecting parts 220, which are arranged on both sides of the transmission assembly 300 in a direction perpendicular to the movement direction of the sealing assembly 800. The two connecting parts 220 can improve the firmness and stability of the connection between the connecting part 220 and the battery pack 980.

[0071] See also Figure 7 and Figure 8 As shown, in an optional solution of this embodiment, the airtight tooling further includes a battery pack plug-in 600; the sealing assembly 800 is used to fit the interface of the battery pack 980 through the battery pack plug-in 600. The battery pack plug-in 600 helps the sealing assembly 800 fit the interface of the battery pack 980, thereby improving the sealing performance between the airtight tooling and the battery pack 980 to a certain extent.

[0072] Optionally, the hook structure 221 of the connecting portion 220 is detachably connected to the battery pack plug-in 600 so that the airtight tooling can be installed on the battery pack 980 through the battery pack plug-in 600 .

[0073] In this embodiment, the handheld assembly 100 may be of the prior art, or may adopt the following structure. Figure 5 and Figure 6 As shown, optionally, the handheld assembly 100 includes a handle portion 110, a handheld connection portion 120, a handheld base portion 130 and a handheld rod portion 140; the handheld base portion 130 is connected to the base 200; one end of the handheld connection portion 120 is hinged to the handle portion 110, the other end of the handheld connection portion 120 is hinged to the handheld base portion 130, the handle portion 110 is hinged to one end of the handheld rod portion 140, and the handheld rod portion 140 is slidably connected to the handheld base portion 130. Through the handle portion 110, the handheld connection portion 120, the handheld base portion 130 and the handheld rod portion 140, it is easy to operate and it is also convenient to quickly operate the handheld assembly 100, so as to drive the transmission assembly 300 to drive the sealing assembly 800 to move, and then make the sealing assembly 800 fit with the battery pack 980.

[0074] In order to more clearly understand the airtight tooling described in this embodiment, the operation process is briefly described below:

[0075] 1. The hook structure 221 of the base 200 is connected to the battery pack plug-in 600 to install the airtight tooling on the battery pack 980 through the battery pack plug-in 600.

[0076] 2. Move the handheld assembly 100 and drive the transmission assembly 300 to move the sealing assembly 800, so that the sealing assembly 800 fits with the interface of the battery pack 980 through the battery pack plug-in 600.

[0077] 3. A hand-sliding valve 910 is connected to the air pipe 900, and both ends of the air pipe 900 are respectively connected to the airtightness tester and the airflow interface 822 of the airtight tooling, and then the hand-sliding valve 910 is opened to perform an airtightness test on the battery pack 980. If ventilation is not required, the hand-sliding valve 910 can be directly closed.

[0078] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An airtight tool, used to connect an airtight tester to an interface of a battery pack (980) to perform airtightness testing on the battery pack (980), characterized in that: It comprises a handheld component (100), a base (200), a transmission component (300) and a sealing component (800); The handheld component (100) is mounted on the base (200) and connected to the transmission component (300); an external force is applied to the handheld component (100) to cause the handle of the handheld component (100) to rotate relative to the base (200), thereby driving the transmission component (300) to drive the sealing component (800) to move; One end of the transmission assembly (300) away from the handheld assembly (100) is connected to the sealing assembly (800); The base (200) comprises a connecting portion (220), and the connecting portion (220) is used for being detachably connected to the battery pack (980); The sealing assembly (800) is provided with an airflow groove (821) and an airflow interface (822) connected to the airflow groove (821), and the groove of the airflow groove (821) faces away from the transmission assembly (300); the airflow groove (821) is configured to be connected to the interface of the battery pack (980) when the sealing assembly (800) and the interface of the battery pack (980) are in contact, and the airflow interface (822) is configured to be connected to the airtight tester so that the airtight tester injects gas into the battery pack (980) via the airflow interface (822) and the airflow groove (821) in sequence.

2. The airtight tooling according to claim 1, characterized in that: The transmission assembly (300) comprises a transmission shaft (310), a sliding seat (320) and an elastic member (330); The sliding seat (320) is connected to the sealing assembly (800); the elastic member (330) is arranged in the sliding seat (320) and one end of the elastic member (330) is in contact with the sealing assembly (800); One end of the transmission shaft (310) is connected to the handheld component (100), and the other end is passed through the sliding seat (320) and connected to the elastic member (330); The transmission shaft (310) is configured to be able to slide along the axial direction of the sliding seat (320) to drive the elastic member (330) to undergo elastic deformation, thereby pushing the sealing assembly (800) to move to the interface of the battery pack (980) and to be sleeved on the outer periphery of the interface of the battery pack (980) to seal the interface of the battery pack (980).

3. The airtight tooling according to claim 2, characterized in that: The sliding seat (320) is provided with a through hole, a portion of the transmission shaft (310) is inserted into the through hole and abuts against an end of the elastic member (330) away from the sealing assembly (800), and the elastic member (330) is accommodated in the through hole.

4. The airtight tooling according to claim 2, characterized in that: The sliding seat (320) is provided with a stop edge (321) for preventing the transmission shaft (310) from detaching; and the transmission shaft (310) is provided with a transmission protrusion (311) that cooperates with the stop edge (321).

5. The airtight tooling according to claim 1, characterized in that: Also includes a guide member (500); One end of the guide member (500) is connected to the sealing assembly (800), and the other end passes through the base (200) and is slidably connected to the base (200), and the sliding direction of the guide member (500) is parallel to the moving direction of the sealing assembly (800).

6. The airtight tooling according to claim 5, characterized in that: The number of the guide members (500) is two; along a direction perpendicular to the movement direction of the sealing assembly (800), the two guide members (500) are arranged on both sides of the transmission assembly (300); A linear bearing (510) is connected between the guide member (500) and the base (200).

7. The airtight tooling according to claim 1, characterized in that: The sealing assembly (800) comprises a cover body (820) and a sealing member (810); The cover body (820) has a first surface and a second surface corresponding to each other, and has a side wall connected to the first surface and the second surface; the first surface is connected to the transmission assembly (300), the notch of the airflow groove (821) is arranged on the second surface, and the airflow groove (821) is recessed in the cover body (820) along the direction from the second surface to the first surface, and the airflow interface (822) is arranged on the side wall; The sealing member (810) is connected to the second surface, and the sealing member (810) is arranged on the periphery of the airflow groove (821).

8. The airtight tooling according to claim 1, characterized in that: The airflow interface (822) is connected to an air pipe (900); one end of the air pipe (900) away from the airflow interface (822) is configured to be connected to the airtightness tester, and a hand sliding valve (910) is provided on the air pipe (900).

9. The airtight tooling according to claim 1, characterized in that: The base (200) further comprises a main body (210); the connecting portion (220) is detachably connected to the main body (210); The handheld component (100) is connected to the main body (210); The connecting portion (220) extends along the moving direction of the sealing assembly (800), and an end of the connecting portion (220) away from the main body portion (210) is used for detachable connection with the battery pack (980).

10. The airtight tooling according to claim 9, characterized in that: A hook structure (221) is provided at one end of the connection portion (220) away from the main body portion (210); the hook structure (221) is used for detachable connection with the battery pack (980), and the opening direction of the hook structure (221) intersects with the moving direction of the sealing assembly (800).

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