Plugging device for explosion-proof valve

Abstract

The utility model discloses a plugging device for an anti-explosion valve, the plugging device comprises a shell, a pressing block, an elastic piece and a clamping part, and a moving space is formed on the shell; the pressing block is arranged on the shell and contained in the moving space, and the pressing block is suitable for blocking the anti-explosion valve. The elastic piece is arranged between the pressing block and the shell; the clamping part is arranged on the shell and protrudes out of the surface of the shell, and the clamping part is suitable for limiting relative movement of the shell and the anti-explosion valve. According to the plugging device, the anti-explosion valve can be effectively and reliably plugged, stable connection with the anti-explosion valve is achieved through the clamping part, and therefore the reliability and safety of plugging are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of explosion-proof valves, in particular to a blocking device for explosion-proof valves. Background Art

[0002] During the production and off-line testing of power battery packs, airtightness testing of battery packs is a key step to ensure the sealing effect of battery packs.

[0003] As an important component of the power battery pack, the explosion-proof valve releases pressure through conductivity when the pressure inside the battery pack rises abnormally to prevent the battery pack from exploding. However, during the airtightness test, the conductivity of the explosion-proof valve will cause gas to overflow when the battery pack is inflated, making it impossible to accurately detect the sealing performance of the battery pack. Therefore, the explosion-proof valve needs to be blocked before the airtightness test.

[0004] The commonly used plugging method is to use low-cost and easy-to-operate sealing glue to directly plug the entire explosion-proof valve, but there are significant shortcomings and limitations. The effect of using sealing glue for plugging is greatly affected by human factors. Different operators have different operating techniques and plugging strengths, which may lead to inconsistency and uncontrollability of the plugging effect.

[0005] CN202121212689.6 discloses an explosion-proof valve plugging test tool, comprising: a bracket assembly, one end of which is used to locate the installation position of the explosion-proof valve on the battery box; an elbow clamp, which is arranged at the other end of the bracket assembly; a blocking block, which is transmission-connected to the elbow clamp, and the blocking block is provided with a quick-plug connector, which is used to connect the air pipe to inflate the box, and the blocking block is sealed with the peripheral side of the air outlet of the explosion-proof valve. The above scheme has low operating efficiency, and the positioning effect is affected by the service life of the tension spring. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a plugging device for an explosion-proof valve. According to the plugging device of the utility model, the explosion-proof valve can be effectively and reliably plugged, and a stable connection with the explosion-proof valve is achieved through the clamping part, thereby significantly improving the reliability and safety of the plugging.

[0007] According to the utility model, the blocking device is used for an explosion-proof valve, and the blocking device includes a shell, on which a moving space is formed; a pressure block, which is arranged on the shell and accommodated in the moving space, and the pressure block is suitable for blocking the explosion-proof valve; an elastic member, which is arranged between the pressure block and the shell; and a clamping portion, which is arranged on the shell and protrudes from the surface of the shell, and the clamping portion is suitable for limiting the relative movement of the shell and the explosion-proof valve.

[0008] According to the plugging device of the utility model, a moving space is formed on the shell, and the moving space is used to accommodate the pressure block and provide a trajectory for the movement of the pressure block. The pressure block is arranged on the shell and accommodated in the moving space. The pressure block can cooperate with the explosion-proof valve to block the explosion-proof valve, so as to effectively prevent the flow of gas when needed. The elastic member is arranged between the pressure block and the shell, and plays a buffering role. When the pressure block moves due to external force, the elastic member can absorb the impact force and protect the pressure block and the shell from damage. When the external force disappears, the elastic member can push the pressure block back to the initial position to achieve automatic reset. After the pressure block blocks the explosion-proof valve, the elastic member can also press the pressure block on the explosion-proof valve to improve reliability. The clamping part is arranged on the shell and protrudes from the surface of the shell. After the pressure block blocks the explosion-proof valve, the clamping part can be clamped and matched with the explosion-proof valve to limit the relative movement of the shell and the explosion-proof valve. Through the cooperation of the clamping part and the explosion-proof valve, it can be ensured that the plugging device will not accidentally fall off or shift during operation, thereby ensuring the reliability and safety of the plugging.

[0009] According to some embodiments of the utility model, the shell includes: a top plate; a foot portion, the foot portion is constructed as a plurality of and is arranged at intervals on the outer periphery of the top plate, the moving space is defined between the foot portion and the top plate, and the clamping portion is constructed as a protrusion arranged on the surface of each foot portion facing the moving space.

[0010] According to some embodiments of the utility model, a through hole is formed on the top plate, a connecting rod passing through the through hole is provided on the pressing block, and a first limiting member is provided at one end of the connecting rod away from the pressing block.

[0011] According to some embodiments of the present utility model, the first limiting member is configured as a disk protruding from the outer surface of the connecting rod.

[0012] According to some embodiments of the present invention, a second limiting member is provided on a side of the top plate facing the moving space, and the second limiting member is suitable for limiting the moving distance of the pressing block.

[0013] According to some embodiments of the present invention, the second limiting member is constructed as a limiting column extending from the bottom surface of the top plate toward the top surface of the pressing block, and the limiting column is parallel to the connecting rod.

[0014] According to some embodiments of the present invention, the limiting column is configured as a plurality of limiting columns that are spaced apart around the outer circumference of the connecting rod.

[0015] According to some embodiments of the utility model, a matching hole is formed on the top plate, the matching holes are multiple and each of the matching holes extends in the circumferential direction, and the limiting column passes through the matching hole and can move in the extension direction of the matching hole.

[0016] According to some embodiments of the utility model, the limiting column includes: a first connecting section, the first connecting section is accommodated in the matching hole, and a limiting protrusion is formed on the top of the first connecting section; a second connecting section, the second connecting section has a diameter larger than the first connecting section and is threadedly connected to the first connecting section.

[0017] According to some embodiments of the present invention, a flexible sealing member is provided at the bottom of the pressing block.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a cross-sectional view of a blocking device according to an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a blocking device according to an embodiment of the utility model;

[0022] Figure 3 The utility model is a schematic structural diagram of a blocking device blocking an explosion-proof valve according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] Blocking device 1;

[0025] Shell 11, top plate 111, support leg 112;

[0026] Briquetting 12;

[0027] Elastic member 13;

[0028] A clamping portion 14;

[0029] Connecting rod 15, first stopper 151;

[0030] A second limiting member 16 and a flexible sealing member 17 . DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be 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.

[0034] In the related technology, the commonly used plugging method is to use low-cost and easy-to-operate sealing glue to directly plug the entire explosion-proof valve, which has significant shortcomings and limitations. The effect of using sealing glue for plugging is greatly affected by human factors. Different operators have different operating techniques and plugging strengths, which may lead to inconsistency and uncontrollability of the plugging effect.

[0035] Reference below Figure 1-Figure 3 A blocking device 1 for an explosion-proof valve according to an embodiment of the utility model is described.

[0036] like Figure 1-Figure 3As shown, according to the utility model, the blocking device 1 is used for an explosion-proof valve, and the blocking device 1 includes a shell 11, a pressure block 12, an elastic member 13 and a clamping portion 14. A moving space is formed on the shell 11; the pressure block 12 is arranged on the shell 11 and accommodated in the moving space, and the pressure block 12 is suitable for blocking the explosion-proof valve; the elastic member 13 is arranged between the pressure block 12 and the shell 11; the clamping portion 14 is arranged on the shell 11 and protrudes from the surface of the shell 11, and the clamping portion 14 is suitable for limiting the relative movement of the shell 11 and the explosion-proof valve.

[0037] According to the plugging device 1 of the utility model, a moving space is formed on the shell 11, and the moving space is used to accommodate the pressure block 12 and provide a trajectory for the movement of the pressure block 12. The pressure block 12 is arranged on the shell 11 and accommodated in the moving space. The pressure block 12 can cooperate with the explosion-proof valve to block the explosion-proof valve so as to effectively prevent the flow of gas when needed. The elastic member 13 is arranged between the pressure block 12 and the shell 11 to play a buffering role. When the pressure block 12 is moved by an external force, the elastic member 13 can absorb the impact force and protect the pressure block 12 and the shell 11 from damage. When the external force disappears, the elastic member 13 can push the pressure block 12 back to the initial position to achieve automatic resetting. After the pressure block 12 blocks the explosion-proof valve, the elastic member 13 can also press the pressure block 12 against the explosion-proof valve to improve reliability. The clamping part 14 is arranged on the housing 11 and protrudes from the surface of the housing 11. After the pressure block 12 blocks the explosion-proof valve, the clamping part 14 can be engaged with the explosion-proof valve to limit the relative movement between the housing 11 and the explosion-proof valve. Through the cooperation between the clamping part 14 and the explosion-proof valve, it can be ensured that the blocking device 1 will not accidentally fall off or shift during operation, thereby ensuring the reliability and safety of the blocking.

[0038] Therefore, according to the plugging device 1 of the present invention, the explosion-proof valve can be effectively and reliably plugged, and a stable connection with the explosion-proof valve is achieved through the clamping portion 14, thereby significantly improving the reliability and safety of the plugging.

[0039] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the housing 11 includes a top plate 111 and a foot portion 112, and the top plate 111 provides upper support and restriction for the pressing block 12. The foot portion 112 is constructed as a plurality of foot portions 112 and is arranged at intervals on the outer periphery of the top plate 111, and a moving space is defined between the foot portion 112 and the top plate 111, and the clamping portion 14 is constructed as a protrusion arranged on the surface of each foot portion 112 facing the moving space. The foot portion 112 can be clamped with the explosion-proof valve through the clamping portion 14. The plurality of foot portions 112 are arranged at intervals and surround the outer periphery of the pressing block 12, so that after the pressing block 12 blocks the explosion-proof valve, the plurality of foot portions 112 can respectively cooperate with the explosion-proof valve on the outer periphery of the pressing block 12 to form a plurality of connection points, thereby improving the stability and reliability of the blocking device 1.

[0040] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, a through hole is formed on the top plate 111, and a connecting rod 15 passing through the through hole is provided on the pressing block 12. The connecting rod 15 is used to connect the pressing block 12 with the top plate 111, and the connecting rod 15 is provided through the through hole on the top plate 111, so that the pressing block 12 can move synchronously with the connecting rod 15 along the extension direction of the through hole relative to the top plate 111, allowing the pressing block 12 to move under the guidance of the connecting rod 15, so that the pressing block 12 moves along a preset path, thereby realizing efficient blocking or release of the explosion-proof valve. A first stopper 151 is provided at one end of the connecting rod 15 away from the pressing block 12, and the first stopper 151 can limit the movement range of the pressing block 12, preventing the pressing block 12 from moving excessively and causing the connecting rod 15 to fall out of the through hole, thereby improving reliability.

[0041] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the first stopper 151 is constructed as a disc protruding from the outer surface of the connecting rod 15. The disc shape has a larger contact area and can provide a more stable support and stopper effect. Secondly, the edge of the disc shape is smooth and is not easy to get stuck or scratched with other parts, thereby ensuring smooth operation. The first stopper 151 protrudes from the outer surface of the connecting rod 15, so that the stopper can directly contact the surface of the housing 11, thereby realizing the stopper function.

[0042] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, a second limiter 16 is provided on one side of the top plate 111 facing the moving space, and the second limiter 16 can directly contact the pressing block 12 and limit the moving distance of the pressing block 12. The second limiter 16 is used to limit the moving distance of the pressing block 12 in the moving space. When the pressing block 12 moves toward the explosion-proof valve and reaches a predetermined position, the second limiter 16 will prevent it from moving further. At this time, the pressing block 12 can accurately block the explosion-proof valve, and the clamping portion 14 can also be clamped with the explosion-proof valve, thereby achieving a stable and reliable blocking effect.

[0043] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the second limiting member 16 is constructed as a limiting column extending from the bottom surface of the top plate 111 toward the top surface of the pressing block 12. The limiting column extends from the bottom surface of the top plate 111 toward the top surface of the pressing block 12, and the pressing block 12 can move along a predetermined path during the movement until it contacts and stops with the limiting column. Since the pressing block 12 moves under the guidance of the connecting rod 15, the parallel relationship between the limiting column and the connecting rod 15 is conducive to the pressing block 12 accurately reaching and contacting the limiting column, thereby realizing stable limiting of the pressing block 12.

[0044] According to some embodiments of the present invention, Figure 2 and Figure 3 As shown, the limiting column structure is a plurality of limiting columns arranged at intervals around the outer circumference of the connecting rod 15, so that the pressure block 12 can be limited by the plurality of limiting columns at the same time and positioned between the limiting columns and the explosion-proof valve, thereby more effectively blocking the explosion-proof valve. The plurality of limiting columns are arranged at intervals around the outer circumference of the connecting rod 15, which can optimize the force distribution, achieve more uniform and stable limiting, and further enhance the stability and reliability of the blocking.

[0045] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, a matching hole is formed on the top plate 111, and the matching holes are multiple and each matching hole extends in the circumferential direction. The limiting column passes through the matching hole and can move in the extension direction of the matching hole. A plurality of limiting columns are correspondingly arranged in the plurality of matching holes. Due to the extension of the matching holes in the circumferential direction, the limiting column has a certain moving space in the matching holes and can move in the circumferential direction, which not only ensures the stability of the limiting of the pressure block 12, but also increases its flexibility. After the pressure block 12 blocks the explosion-proof valve, the shell 11 can be rotated to achieve the matching of the clamping part 14 and the explosion-proof valve. During the clamping matching process, the pressure block 12 and the limiting column remain stationary, ensuring the stability and reliability of the blocking.

[0046] According to some embodiments of the present invention, Figure 1 As shown, the limiting column includes a first connecting section and a second connecting section. The first connecting section has a smaller diameter and is accommodated in the matching hole. The limiting protrusion formed at the top of the first connecting section can limit the first connecting section from coming out of the top. The second connecting section has a larger diameter than the first connecting section and cannot pass through the matching hole, so as to achieve contact with the pressing block 12 to limit the movement of the pressing block 12. The second connecting section is connected to the first connecting section by threaded matching, and the first connecting section can be conveniently matched and connected with the second connecting section when the first connecting section is inserted into the matching hole, which is convenient for installation and reduces the difficulty of operation.

[0047] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, a flexible seal 17 is provided at the bottom of the pressing block 12. The flexible seal 17 is flexible and can fit closely to the surface of the explosion-proof valve, fill in tiny gaps and unevenness, and thus achieve a better sealing effect. Specifically, the flexible seal 17 can be rubber, silicone or other polymer materials.

[0048] According to some embodiments of the utility model, a circumferential groove is formed at the bottom of the pressing block 12, and the flexible seal 17 is embedded in the groove. The circumferential groove allows the flexible seal 17 to be evenly distributed at the bottom of the pressing block 12, thereby achieving a comprehensive sealing effect. At the same time, the groove can also provide a stable installation environment for the flexible seal 17 to prevent it from shifting or falling off during operation. The flexible seal 17 is embedded in the groove and tightly combined with the groove, so that the connection between the flexible seal 17 and the pressing block 12 is more secure and not easy to separate, which can further reduce the risk of leakage and improve the tightness and stability of the plugging.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A plugging device for an explosion-proof valve, characterized in that: include: A housing (11), wherein a moving space is formed on the housing (11); A pressing block (12), the pressing block (12) being arranged on the housing (11) and accommodated in the moving space, the pressing block (12) being suitable for blocking the explosion-proof valve; An elastic member (13), wherein the elastic member (13) is arranged between the pressing block (12) and the housing (11); A clamping portion (14), the clamping portion (14) being arranged on the shell (11) and protruding from the surface of the shell (11), the clamping portion (14) being suitable for limiting the relative movement between the shell (11) and the explosion-proof valve.

2. The plugging device for explosion-proof valve according to claim 1, characterized in that: The housing (11) comprises: Top plate (111); The supporting foot portion (112) is constructed as a plurality of supporting foot portions (112) and is arranged at intervals on the outer periphery of the top plate (111); the moving space is defined between the supporting foot portion (112) and the top plate (111); and the clamping portion (14) is constructed as a protrusion arranged on the surface of each supporting foot portion (112) facing the moving space.

3. The plugging device for explosion-proof valve according to claim 2, characterized in that: A through hole is formed on the top plate (111), a connecting rod (15) passing through the through hole is provided on the pressing block (12), and a first limiting member (151) is provided at one end of the connecting rod (15) away from the pressing block (12).

4. The plugging device for explosion-proof valve according to claim 3, characterized in that: The first limiting member (151) is configured as a disk protruding from the outer surface of the connecting rod (15).

5. The plugging device for explosion-proof valve according to claim 3, characterized in that: A second limiting member (16) is provided on a side of the top plate (111) facing the moving space, and the second limiting member (16) is suitable for limiting the moving distance of the pressing block (12).

6. The plugging device for explosion-proof valve according to claim 5, characterized in that: The second limiting member (16) is constructed as a limiting column extending from the bottom surface of the top plate (111) toward the top surface of the pressing block (12), and the limiting column is parallel to the connecting rod (15).

7. The plugging device for explosion-proof valve according to claim 6, characterized in that: The limiting columns are structured as a plurality of columns which are arranged at intervals around the outer circumference of the connecting rod (15).

8. The plugging device for explosion-proof valve according to claim 7, characterized in that: A matching hole is formed on the top plate (111), the matching holes are multiple and each of the matching holes extends in the circumferential direction, and the limiting column passes through the matching hole and can move in the extension direction of the matching hole.

9. The plugging device for explosion-proof valve according to claim 8, characterized in that: The limiting column comprises: A first connecting section, the first connecting section is received in the matching hole, and a limiting protrusion is formed on the top of the first connecting section; The second connecting section has a diameter greater than that of the first connecting section and is threadedly connected to the first connecting section.

10. The plugging device for explosion-proof valve according to claim 1, characterized in that: A flexible sealing member (17) is provided at the bottom of the pressing block (12).

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