Air-tight tooling

Abstract

The application provides an airtight tool. The airtight tool is applied to an explosion-proof valve. The airtight tool comprises a base, a pushing piece, a gas flushing piece, an elastic piece and a valve opening piece. The base is provided with a through hole. The gas flushing piece comprises a guide part and a flange part. The guide part is slidingly installed with the through hole, and the guide part comprises an operation end and a working end which are oppositely arranged in the sliding direction. The valve opening piece is arranged on the working end. The flange part extends from the working end along the lateral direction of the guide part. The operation end passes through the through hole and is assembled with the pushing piece, so as to push the base to move towards the flange part. The two ends of the elastic piece abut against the base and the flange part respectively. The flange part is provided with a sealing piece on the side away from the elastic piece. By arranging the valve opening piece, the valve opening and the gas flushing can be simultaneously completed by using a single airtight tool, the operation process of the airtight tool is simplified, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of tooling technology, and in particular to an airtight tooling. Background Technology

[0002] Power batteries are the core component of new energy vehicles. As the "heart" of new energy vehicles, the performance, safety, and cost of power batteries directly affect the development level and competitiveness of new energy vehicles. The airtightness of power batteries directly affects their safety and lifespan. Internal gas leakage, external dust, rainwater, and road water corrosion can all lead to dangerous situations such as battery performance degradation, overheating, short circuits, and even explosions.

[0003] To ensure the airtightness of power batteries, airtightness testing is required during manufacturing. Currently, the operation process of airtightness testing is quite cumbersome, requiring the use of different fixtures for valve opening and air purging, resulting in low efficiency in battery airtightness testing. Utility Model Content

[0004] This application provides a heat sink and a vehicle to solve related technical problems.

[0005] An airtight tooling for use in an explosion-proof valve includes: a base, a pusher, an air-inflating component, an elastic component, and a valve-opening component; the base is provided with a through hole; the air-inflating component includes a guide portion and a flange portion; the guide portion is slidably mounted to the through hole, and in the sliding direction, the guide portion includes an operating end and a working end disposed opposite to each other; the valve-opening component is disposed at the working end; the flange portion extends laterally from the working end along the guide portion; the operating end passes through the through hole and is assembled with the pusher for pushing the base toward the flange portion; both ends of the elastic component abut against the base and the flange portion respectively; a sealing element is provided on the side of the flange portion away from the elastic component.

[0006] By incorporating a valve opening element at one end of the air-sealing component, a single airtight fixture can simultaneously perform valve opening and air-sealing, simplifying the operation process and improving testing efficiency. Simultaneously, the inclusion of an elastic element enhances the tightness of the seal between the sealing element and the explosion-proof valve, preventing air leakage at the connection between the explosion-proof valve and the airtight fixture, thus improving the accuracy of battery airtightness testing.

[0007] Furthermore, the base has a mounting component on the side near the operating end for connecting to the explosion-proof valve. The mounting component has a communicating valve inlet and a locking interface, the locking interface being aligned with the working end, and the valve inlet facing the guide portion. After the explosion-proof valve enters the mounting component through the valve inlet, it can be directly fixed via the locking interface, improving the installation efficiency of the airtight fixture and further enhancing the efficiency of airtightness testing.

[0008] Furthermore, the base is provided with a lateral clearance opening facing the guide portion for installing an air inlet connector; the base is provided with a base plate, and the clearance opening and the valve inlet are distributed on both sides of the base plate. The base plate isolates the clearance opening from the valve inlet, avoiding the formation of a long, continuous opening structure, thereby ensuring the structural strength of the airtight tooling.

[0009] Furthermore, the valve inlet and the clearance port face opposite directions. Because the valve inlet and the clearance port face opposite directions, interference between the valve body installation and the air inlet connector installation can be reduced, thereby further improving the installation efficiency of the airtight fixture and accelerating the airtightness testing rate.

[0010] Furthermore, the pushing component includes a pushing block and an operating lever. The pushing block includes a pair of opposing first side surfaces, a pair of opposing second side surfaces, and an end face connecting the pair of first side surfaces and the pair of second side surfaces. The operating lever is located on the side of the pushing block opposite to the end face. The air-pressing component is rotatably connected to the pushing block and forms a connection point on the first side surface. The distance between the connection point and the end face is less than the distance between the connection point and the second side surface. By rotatably connecting the pushing block and the air-pressing component, the eccentric rotation of the block structure is used to push the air-pressing component. The structure is simple, easy to manufacture, and improves the production efficiency of the airtight tooling.

[0011] Furthermore, the base includes a substrate and a fixing block, with the fixing block abutting against the substrate and the pushing member on both sides respectively; the substrate is provided with a first through hole, and the fixing block is provided with a second through hole, the first through hole and the second through hole being aligned and communicating to form the through hole. The substrate and fixing block are separately configured, reducing manufacturing difficulty and further improving the production efficiency of the airtight tooling.

[0012] Furthermore, the wall of the first through hole is provided with a mounting groove. By providing the mounting groove, a sealing ring can be installed in the mounting groove, which abuts against the air-pressing component and plays a guiding role, ensuring the moving efficiency of the air-pressing component.

[0013] Furthermore, the valve opening component includes a magnet, which is connected to the working end screw. The magnet can generate magnetic force to open the cover of the explosion-proof valve by attraction, resulting in a simple structure and high efficiency.

[0014] Furthermore, the sealing element is annular; the sealing element has an abutment groove on the side opposite to the flange portion for abutting against the explosion-proof valve. By providing an abutment groove to abut against the explosion-proof valve, the tightness of the connection between the sealing element and the explosion-proof valve is improved, and the probability of air leakage at the connection between the explosion-proof valve and the airtight tooling is reduced.

[0015] Furthermore, it also includes an air inlet connector; the base is provided with a clearance opening, and the air inlet connector passes through the clearance opening to connect to the air-pressuring component; the air inlet connector is L-shaped. Because the air inlet connector is L-shaped, it can change the air-pressuring direction, facilitates the insertion of the air-pressuring pipe, and improves the operational convenience of the airtight tooling.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0018] Figure 1 This is a structural diagram of an airtight tooling according to an exemplary embodiment of this application;

[0019] Figure 2 yes Figure 1 Structural diagram of the gas-tight tooling from another perspective;

[0020] Figure 3 yes Figure 1 Structural diagram of the central base;

[0021] Figure 4 yes Figure 3 A structural diagram of the central base from another perspective;

[0022] Figure 5 yes Figure 1 Structural diagram of the middle pusher component;

[0023] Figure 6 yes Figure 1 A structural diagram of a gas-tight tooling unit in its state before the explosion-proof valve is installed;

[0024] Figure 7 yes Figure 1 A structural diagram of the airtight tooling in the state of being installed as an explosion-proof valve;

[0025] Figure 8 yes Figure 1 Structural diagram of the central punch pneumatic component;

[0026] Figure 9 yes Figure 8 A structural diagram of the central-impact pneumatic component from another perspective;

[0027] Figure 10 yes Figure 1 A cross-sectional view of the gas-tight tooling.

[0028] Reference numerals: Base - 10; Through hole - 100; Base plate - 11; First through hole - 110; Mounting groove - 111; Connecting hole - 112; First fixing groove - 113; Fixing block - 12; Second through hole - 120; Clearance opening - 121; End plate - 122; Mounting component - 13; Mounting space - 130; Valve inlet - 131; Snap-fit ​​interface - 132; Snap-fit ​​edge - 133; Pushing component - 20; Pushing block - 21; Connection point - 210; First side - 211; Second side - 212; End Surface-213; Arc-214; Connecting groove-215; Operating lever-22; Fixing rod-23; Air inlet-30; Air inlet-301; Air passage-302; Outlet section-303; Guide section-31; Operating end-311; Working end-312; Flange section-32; Second fixing groove-33; Receiving groove-34; Screw hole-341; Assembly groove-35; Elastic element-40; Valve opening element-50; Magnet-51; Screw-52; Seal-60; Abutment groove-61; Air inlet connector-70. Detailed Implementation

[0029] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0030] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0031] To ensure the airtightness of power batteries, airtightness testing is required during manufacturing using specialized fixtures. Currently, the operation process for these airtightness fixtures is cumbersome, requiring the use of different fixtures for valve opening and priming, resulting in low efficiency in battery airtightness testing. This application provides an airtightness fixture to address these technical problems.

[0032] like Figure 1 and Figure 2 As shown, this application provides an airtight tooling, including a base 10, a pusher 20, an air-inflating member 30, an elastic member 40, a valve opening member 50, a sealing member 60, and an air inlet connector 70.

[0033] The base 10 is provided with a through hole 100. The air-filling component 30 includes a guide portion 31 and a flange portion 32. The guide portion 31 is slidably mounted to the through hole 100. In the sliding direction X, the guide portion 31 includes an operating end 311 and a working end 312 disposed opposite to each other.

[0034] A valve opening element 50 is disposed at the working end 312. A flange 32 extends laterally from the working end 312 along the guide portion 31. An operating end 311 is assembled with a pusher 20 through a through hole 100 to push the base 10 toward the flange 32.

[0035] The two ends of the elastic member 40 abut against the base 10 and the flange portion 32, respectively. A sealing member 60 is provided on the side of the flange portion 32 opposite to the elastic member 40.

[0036] By setting a valve opening element 50 at one end of the air-pressurizing element 30, valve opening and air-pressurizing can be completed simultaneously using a single airtight fixture, simplifying the operation process of the airtight fixture and improving testing efficiency. At the same time, by setting an elastic element 40, the tightness of the fit between the sealing element 60 and the explosion-proof valve is improved, preventing air leakage at the connection between the explosion-proof valve and the airtight fixture, enabling more accurate detection of the airtightness of the power battery itself and improving testing accuracy.

[0037] Please refer to the following: Figure 3 and Figure 4 As shown, the base 10 includes a base plate 11, a fixing block 12, and a mounting member 13. The base plate 11 is rectangular with a semi-circular end. The base plate 11 is provided with a first through hole 110 for forming a through hole 100 to allow the operating end 311 to pass through. The wall of the first through hole 110 is provided with a mounting groove 111.

[0038] By providing the mounting groove 111, a sealing ring can be installed within the mounting groove 111, abutting against the inflator 30 and serving as a guide, ensuring the moving efficiency of the inflator 30. In other embodiments, the sealing ring may not be provided within the mounting groove 111, reducing the manufacturing cost of the airtight tooling.

[0039] The substrate 11 has a plurality of connection holes 112 near its edge for assembly with the mounting component 13. The substrate 11 has a first fixing groove 113 on the side opposite to the fixing block 12 for fixing the elastic component 40.

[0040] The fixing block 12 abuts against the substrate 11 and the pusher 20 on both sides, respectively. The fixing block 12 is cylindrical. The fixing block 12 is provided with a second through hole 120. The first through hole 110 and the second through hole 120 are aligned and connected to form a through hole 100. The substrate 11 and the fixing block 12 are separately disposed, which reduces the manufacturing difficulty and further improves the production efficiency of the airtight tooling.

[0041] One end of the second through hole 120 is square-round and formed on the end plate 122. The side of the fixing block 12 is provided with a relief opening 121, through which the air inlet connector 70 can be installed to the air inlet 30.

[0042] Mounting member 13 is disposed on the side of base 10 near operating end 311. Mounting member 13 is used to connect to explosion-proof valve to fix airtight tooling. Mounting member 13 is U-shaped and forms an installation space 130 inside, and operating end 311 is located in installation space 130.

[0043] Mounting component 13 is provided with a valve inlet 131 and a locking interface 132. The valve inlet 131 and the locking interface 132 are connected. Both the valve inlet 131 and the locking interface 132 are connected to the mounting space 130. The locking interface 132 is aligned with the working end 312. The locking interface 132 is formed by the locking edge 133 at the end of the mounting component 13. The valve inlet 131 faces the guide portion 31 laterally. In use, the explosion-proof valve enters the mounting space 130 through the valve inlet 131 and is directly fixed to the locking interface 132, improving the installation efficiency of the airtight tooling and further improving the efficiency of airtightness testing.

[0044] The valve inlet 131 and the clearance port 121 are distributed on both sides of the base plate 11. The base plate 11 blocks the clearance port 121 and the valve inlet 131, avoiding the formation of a long and large continuous opening structure, thereby ensuring the structural strength of the airtight tooling.

[0045] The valve inlet 131 and the clearance port 121 are oriented in opposite directions. Because the valve inlet 131 and the clearance port 121 are oriented in opposite directions, the interference between the valve body and the air inlet connector can be reduced, thereby further improving the installation efficiency of the airtight fixture and accelerating the airtightness testing rate.

[0046] Specifically, when installing the airtight fixture, since the power battery is generally positioned low, the valve inlet 131 is set downwards, and the airtight fixture is fixed to the explosion-proof valve from top to bottom. At this time, the airtight fixture is close to the ground, and since the clearance opening 121 faces upwards, there is a large space to install the air inlet connector 70, which improves installation efficiency.

[0047] Please refer to the following: Figure 5 As shown, the pusher 20 includes a push block 21, an operating lever 22, and a fixing lever 23. The push block 21 includes a pair of first side surfaces 211, a pair of second side surfaces 212, and an end face 213. The pair of first side surfaces 211 are arranged opposite to each other. The pair of second side surfaces 212 are arranged opposite to each other. The end face 213 connects the pair of first side surfaces 211 and the pair of second side surfaces 212. An arc surface 214 connects the end face 213 and the second side surfaces 212. The operating lever 22 is located on the side of the push block 21 opposite to the end face 213.

[0048] The air-pressing component 30 is rotatably connected to the push block 21, forming a connection 210 on the first side 211. Specifically, the push block 21 is provided with a connecting groove 215. The operating end 311 extends into the connecting groove 215. The connection is a hole structure, and the fixing rod 23 passes through the operating end 311 and the connection, realizing the rotatable connection between the operating end 311 and the push block 21.

[0049] Please refer to the following: Figure 6 and Figure 7 As shown, the distance L1 between the connection 210 and the end face 213 is greater than the distance L2 between the connection 210 and the second side face 212. Specifically, when the connection 210 is a hole structure, the vertical distance from the center of the connection 210 to the end face 213 is greater than the distance from the center of the connection 210 to the second side face 212. By rotating the push block 21 to the air-pressing component 30, the eccentric rotation of the block structure is used to push the air-pressing component 30. The structure is simple, easy to manufacture, and improves the production efficiency of the airtight tooling.

[0050] Figure 6 In the state where the airtight fixture is not securely fixed to the explosion-proof valve, the end face 213 abuts against the fixing block 12. Figure 7 The airtight fixture is fixed to the explosion-proof valve, in which the second side 212 abuts against the fixing block 12. Figure 6 In this state, by moving the operating lever 22, the pusher 20 rotates downward around the connection 210. As the distance between the connection 210 and the fixed block 12 continuously decreases from L1 to L2, the air inflator 30 can be moved, so that the seal 60 can fit tightly with the explosion-proof valve.

[0051] Please refer to the following: Figure 8 As shown, the guide portion 31 is cylindrical. A flange portion 32 extends radially outwards from the guide portion 31. The flange portion 32 is provided with a second fixing groove 33. One end of the elastic member 40 is fixed to the first fixing groove 113, and the other end is fixed to the second fixing groove 33, improving the installation stability of the elastic member 40. An air inlet 301 is provided on the side of the guide portion 31 for installing the air inlet connector 70. Please refer to the following: Figure 9 and Figure 10 As shown, the guide member 30 has an air passage 302 inside.

[0052] The working end 312 is provided with a receiving groove 34 for accommodating the valve opening component 50. The bottom of the receiving groove 34 is provided with a screw hole 341 to fix the valve opening component 50. The flange portion 32 is provided with an assembly groove 35 for assembling the sealing component 60, which facilitates the replacement of the sealing component 60.

[0053] The airflow channel 302 includes an outflow section 303. For example... Figure 9As shown, firstly, the outflow section 303 extends from the center of the bottom of the receiving tank 34 to both sides to the tank wall. Then, the outflow section 303 extends along the depth direction of the receiving tank 34 to the end face of the working end 312. Finally, the outflow section 303 extends radially to the connecting assembly tank 35. The outflow section 303 avoids the opening valve 50 to ensure that gas can flow into the battery after the valve is opened.

[0054] like Figure 10 As shown, the elastic element 40 is a spring and is sleeved on the inflation element 30. The valve opening element 50 includes a magnet 51 and a screw 52. The magnet 51 is connected to the working end 312 by the screw 52. The magnet 51 can generate magnetic force to open the cover of the explosion-proof valve by attraction. It has a simple structure and high efficiency.

[0055] The sealing element 60 is annular and has an abutment groove 61 on the side opposite to the flange 32 for abutting against the explosion-proof valve. By abutting against the explosion-proof valve with the abutment groove 61, the tightness of the connection between the sealing element 60 and the explosion-proof valve is improved, reducing the probability of air leakage at the connection between the explosion-proof valve and the airtight fixture. The abutment groove 61 can be V-shaped to improve the sealing effect; the specific shape is not limited.

[0056] The materials used for airtight tooling are not limited. For example, the base 10 can be made of 6061 aluminum alloy, the pusher 20 can be made of P-type steel, the air-cushioning component 30 can be made of 6061 aluminum alloy, and the elastic component 40 can be made of spring steel. All of the above materials are commonly used in the market and are easy to process, which reduces the manufacturing cost of airtight tooling.

[0057] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An airtight tooling for use in explosion-proof valves, characterized in that, include: Base, pusher, air-pressing component, elastic component, and valve opening component; The base is provided with a through hole; the air-filling component includes a guide portion and a flange portion; the guide portion is slidably installed with the through hole, and in the sliding direction, the guide portion includes an operating end and a working end disposed opposite to each other; The valve opening component is disposed at the working end; the flange extends laterally from the working end along the guide portion; the operating end passes through the through hole and is assembled with the pusher component to push the base toward the flange; The two ends of the elastic element abut against the base and the flange respectively; a sealing element is provided on the side of the flange that is away from the elastic element.

2. The airtight tooling according to claim 1, characterized in that, The base has a mounting component on the side near the operating end for connecting to the explosion-proof valve; the mounting component has a connected valve inlet and a locking interface, the locking interface is aligned with the working end, and the valve inlet faces the side of the guide portion.

3. The airtight tooling according to claim 2, characterized in that, The base is provided with a lateral clearance opening facing the guide portion for installing an air intake connector; the base is provided with a base plate, and the clearance opening and the valve inlet are distributed on both sides of the base plate.

4. The airtight tooling according to claim 3, characterized in that, The valve inlet and the clearance port face opposite directions.

5. The airtight tooling according to claim 1, characterized in that, The pusher includes a push block and an operating lever. The push block includes a pair of first sides arranged opposite each other, a pair of second sides arranged opposite each other, and an end face connecting the pair of first sides and the pair of second sides. The operating lever is located on the side of the push block away from the end face; the air inflator is rotatably connected to the push block and forms a connection on the first side, the distance between the connection and the end face is greater than the distance between the connection and the second side.

6. The airtight tooling according to claim 1, characterized in that, The base includes a base plate and a fixing block, with the fixing block abutting against the base plate and the pushing member on both sides respectively; The substrate is provided with a first through hole, and the fixing block is provided with a second through hole. The first through hole and the second through hole are aligned and connected to form the through hole.

7. The airtight tooling according to claim 6, characterized in that, The wall of the first through hole is provided with an installation groove.

8. The airtight tooling according to claim 1, characterized in that, The valve opening component includes a magnet, which is connected to the working end screw.

9. The airtight tooling according to claim 1, characterized in that, The sealing element is annular; the sealing element has an abutment groove on the side opposite to the flange portion for abutting against the explosion-proof valve.

10. The airtight tooling according to claim 1, characterized in that, It also includes an air inlet connector; the base is provided with a clearance opening, and the air inlet connector passes through the clearance opening to connect to the air inlet component; the air inlet connector is L-shaped.

Images