Plugging tool for anti-explosion valve

Abstract

The utility model discloses a plugging tool of an explosion-proof valve, which belongs to the technical field of sealing test, and comprises a shell, a plugging piece and a spring, one end of the shell is provided with a guide cavity, the spring is arranged in the guide cavity, and the plugging piece is arranged at the outer end of the spring; a plurality of clamping jaws are arranged on the side wall of one end of the shell in the circumferential direction at intervals. The clamping jaw is matched with a boss on the outer side of the anti-explosion valve. And the plugging piece is matched with the outer end of the anti-explosion valve.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing testing, in particular to a sealing tool for an explosion-proof valve. Background Art

[0002] When the battery pack of a new energy electric vehicle is charging or the vehicle is used for a long time, the heat of the battery will cause the air inside the battery pack to expand and the battery pack to bulge. Therefore, in order to prevent accidents such as battery pack bulging and explosion, an explosion-proof valve for pressure relief is usually installed on the battery pack. At normal temperature, the explosion-proof valve is in a sealed state, blocking external rainwater, dust, etc. from entering the battery pack. When the battery pack is charging and discharging or in a very high ambient temperature, when the internal pressure of the battery pack increases to the critical pressure relief point, the explosion-proof valve automatically opens to relieve the internal pressure.

[0003] During battery pack airtightness testing, the explosion-proof valve must be sealed to prevent unwanted air leakage. However, existing valves have irregular shapes and lack effective sealing measures. Current sealing methods include: removing the valve and then sealing it, which is complex and can create the risk of leakage from reinstalling the valve; and temporary sealing with sealant, which has inconsistent work standards and cannot be standardized.

[0004] Therefore, it is necessary to design a tool that can seal the explosion-proof valve of the battery pack. Utility Model Content

[0005] In view of the above technical problems existing in the prior art, the utility model provides a sealing tool for an explosion-proof valve to seal the explosion-proof valve of a battery pack.

[0006] The utility model discloses a sealing tool for an explosion-proof valve, comprising a shell, a sealing piece and a spring, wherein a guide cavity is provided at one end of the shell, a spring is provided in the guide cavity, and the sealing piece is provided at the outer end of the spring; a plurality of clamping claws are provided at circumferential intervals on a side wall of one end of the shell; the clamping claws cooperate with a boss on the outer side of the explosion-proof valve; and the sealing piece cooperates with the outer end of the explosion-proof valve.

[0007] Preferably, a gasket matching the outer end of the explosion-proof valve is provided on one side of the blocking member.

[0008] Preferably, a cover is provided at the other end of the shell, and the cover is fixed to the shell by bolts.

[0009] Preferably, the cover portion at the other end of the housing is provided with a guide hole;

[0010] A guide member is provided on the inner side of the blocking member, and the guide member is movably installed in the guide hole.

[0011] Preferably, one end of the guide member is provided with an air guide hole extending toward the blocking member, and the other end is provided with a joint.

[0012] Preferably, a plurality of grooves and bosses are provided on the periphery of the explosion-proof valve, and the grooves and bosses are arranged at intervals.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the boss on the outside of the explosion-proof valve is clamped between the sealing piece and the clamping claw, the explosion-proof valve and the sealing piece are interference fit, and the outer end of the explosion-proof valve is blocked by the sealing piece to prevent gas leakage from the outer end of the explosion-proof valve, making it easier to pressurize and test the air tightness of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the plugging tooling structure of the explosion-proof valve of the utility model;

[0015] Figure 2 This is a schematic diagram of the installation of explosion-proof valves and plugging tools;

[0016] Figure 3 It is a cross-sectional view of the blocking tool.

[0017] Markings in the figure: 1 blocking tool, 2 shell, 21 guide cavity, 22 guide hole, 23 cover,

[0018] 3 blocking piece, 31 air guide hole, 32 joint, 33 gasket, 35 clamping claw, 36 guide piece,

[0019] 4 spring, 5 explosion-proof valve, 51 groove, 52 boss. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0021] The present invention is described in further detail below with reference to the accompanying drawings:

[0022] A plugging tool 1 for explosion-proof valves, such as Figure 1-Figure 3 , including a shell 2, a sealing member 3 and a spring 4. A guide cavity 21 is provided at one end of the shell 2, a spring 4 is provided in the guide cavity 21, and the sealing member 3 is provided at the outer end of the spring 4; a plurality of clamping claws 35 are provided at circumferential intervals on the side wall of one end of the shell 2; the clamping claws 35 cooperate with the boss 52 on the outer side of the explosion-proof valve 5; the sealing member 3 cooperates with the outer end of the explosion-proof valve 5.

[0023] like Figure 2 The boss 52 on the outside of the explosion-proof valve 5 is clamped between the sealing piece 3 and the clamping claw 35. The explosion-proof valve 5 and the sealing piece are interference fit. The outer end of the explosion-proof valve is blocked by the sealing piece 3 to prevent gas leakage from the outer end of the explosion-proof valve, making it easier to pressurize and test the airtightness of the battery pack.

[0024] A gasket 33 is provided on one side of the blocking member 3 to match the outer end of the explosion-proof valve 5 .

[0025] like Figure 3 The other end of the housing is provided with a cover 23, which is fixed to the housing 2 by bolts. The cover 23 at the other end of the housing 2 is provided with a guide hole 22; a guide member 36 is provided on the inner side of the blocking member 3, which is movably mounted in the guide hole 22. This improves the smooth movement of the blocking member 3 and facilitates operation.

[0026] Optionally, one end of the guide member 36 is provided with an air guide hole 31 extending toward the blocking member 3, and the other end is provided with a connector 32. The connector 32 can be connected to an external device, such as an air pressure detector, to detect the pressure relief of the explosion-proof valve or to perform air injection.

[0027] The outer periphery of the explosion-proof valve 5 is provided with a plurality of grooves 51 and bosses 52, and the grooves 51 and bosses 52 are arranged at intervals. The spacing between adjacent jaws is the same as the spacing between adjacent bosses.

[0028] According to the appearance of the explosion-proof valve, the personalized matching size, limit and modular design can not only ensure the sealing effect, but also simplify the operation process, and optimize the difficult and complex operation process into a simple method.

[0029] The simple assembly steps of this utility model are as follows:

[0030] Step S1: Check whether the appearance of the explosion-proof valve is clean and whether there is any damage; check whether the movable parts of the tooling equipment can move flexibly.

[0031] Step S2: Fit the bottom of the sealing tool to the explosion-proof valve, and align the clamping claws of the sealing tool with the groove of the explosion-proof valve.

[0032] Step S3: After slightly pressing the sealing device toward the explosion-proof valve, the clamping jaws rotate to one side so that the clamping jaws are stuck on the boss of the explosion-proof valve. When the interface is closed or no interface is configured, the outer end of the explosion-proof valve can be sealed to achieve rapid clamping.

[0033] Step S4: Perform an airtight test on the battery pack.

[0034] Step S5: After the test is completed, in the pressure-applied state, the sealing tool is rotated to one side, the clamping jaws are aligned with the groove, and the tool is removed.

[0035] This simplifies the operational process, making the explosion-proof valve sealing process more professional and standardized. It also reduces risk points. As a standalone device, it facilitates equipment management, improves the equipment's specialized technical level, and enhances seal testing efficiency and results.

[0036] This utility model is designed to address the complex shape of this explosion-proof valve; it can be designed with a full-size, fully covered sealing solution. This custom device, paired with this explosion-proof valve, facilitates unified management and professional operation. Installation and removal can be accomplished through manual pressure and rotation, without damaging the appearance of the explosion-proof valve or battery pack.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A plugging tool for explosion-proof valve, characterized in that: It comprises a housing (2), a blocking member (3) and a spring (4), A guide cavity (21) is provided at one end of the housing (2), a spring (4) is provided in the guide cavity (21), and a blocking member (3) is provided at the outer end of the spring (4); A plurality of clamping claws (35) are provided at circumferential intervals on a side wall at one end of the housing (2); The clamping claw (35) cooperates with the boss (52) on the outside of the explosion-proof valve (5); The blocking member (3) is matched with the outer end of the explosion-proof valve (5).

2. The plugging tool according to claim 1, characterized in that: A gasket (33) is provided on one side of the blocking member (3) and matches the outer end of the explosion-proof valve (5).

3. The plugging tool according to claim 1, characterized in that: A cover portion (23) is provided at the other end of the housing (2), and the cover portion (23) is fixed to the housing (2) by means of bolts.

4. The plugging tool according to claim 1, characterized in that: The cover portion (23) at the other end of the housing (2) is provided with a guide hole (22); A guide member (36) is provided on the inner side of the blocking member (3), and the guide member (36) is movably installed in the guide hole (22).

5. The blocking tool according to claim 4, characterized in that: One end of the guide member (36) is provided with an air guide hole (31) extending toward the blocking member (3), and the other end is provided with a joint (32).

6. The plugging tool according to claim 1, characterized in that: The explosion-proof valve (5) is provided with a plurality of grooves (51) and bosses (52) on its outer periphery. The groove (51) and the boss (52) are arranged at intervals; The distance between adjacent jaws is the same as the distance between adjacent bosses.

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