Improved new energy battery anti-explosion valve

Abstract

The utility model discloses an improved explosion-proof valve for a new energy battery, which belongs to the technical field of new energy batteries and comprises a valve body, the lower end of the valve body is fixedly connected with a screwed joint, and a channel is arranged in the screwed joint. Through the arranged elastic plugging structure, a first reset spring and a second reset spring, the use stability of plugging rubber can be improved, the second reset spring is connected with a threaded rod through a cylinder, the threaded rod can be rotated through an adjusting block to move in a threaded hole, and then the compression degree of the second reset spring is changed; the acting force on the plugging rubber is adjusted, it is guaranteed that the corresponding acting force is still applied after the spring is used for a long time and the elastic force becomes small, the plugging effect is guaranteed, the abutting assembly is adopted, after the threaded connector is connected to the battery, the abutting assembly makes contact with the battery to provide the abutting acting force, and the stability of the whole anti-explosion valve is further improved; the anti-explosion valve is prevented from falling off due to vibration, and normal operation of anti-explosion pressure relief is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, and in particular to an improved explosion-proof valve for new energy batteries. Background Technology

[0002] New energy batteries generate a lot of heat during charging and use, causing a rapid increase in gas pressure, which can even lead to explosions in severe cases. Therefore, explosion-proof valves are installed on new energy batteries for venting. When the internal pressure of the battery suddenly increases or the temperature rises rapidly, the explosion-proof valve is automatically triggered and opens, venting the high-pressure gas to the outside. Because the explosion-proof valve is located inside the battery, when the valve opens, the high-pressure gas can be directly discharged from the front of the battery, effectively preventing battery explosions.

[0003] Existing battery explosion-proof valves are fixed to the battery via threaded connectors during installation. Because there is no tightening mechanism, relying solely on the threaded connection, the valve can vibrate and easily detach from the battery when used on moving equipment, affecting normal operation. Furthermore, inside the valve, a spring applies force to a sealing block to close the passage, opening upon receiving internal air pressure. Over time, the spring's elasticity decreases, affecting the force applied to the sealing block and reducing its effectiveness, thus hindering proper explosion-proof pressure relief. Utility Model Content

[0004] The main purpose of this utility model is to provide an improved explosion-proof valve for new energy batteries, which can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An improved explosion-proof valve for new energy batteries includes a valve body, a threaded joint fixedly connected to the lower end of the valve body, and a channel provided inside the threaded joint. The valve body has a movable cavity and an exhaust hole connected to the channel. The valve body is provided with an elastic sealing structure and a clamping component at the lower end of the valve body.

[0007] Preferably, the valve body has a threaded hole, and the upper end of the elastic sealing structure is installed in the threaded hole on the valve body.

[0008] Preferably, the lower end of the valve body is provided with a plug-in groove, and the plug-in grooves are distributed in a ring array on the valve body. The abutting component is fixedly installed at the lower end of the valve body through the plug-in groove.

[0009] Preferably, the elastic sealing structure includes a sealing rubber, a connecting block, a first return spring, a second return spring, a threaded rod, an adjusting block, and a cylinder. The sealing rubber is fixedly connected to the connecting block and is located in the movable cavity. The first return spring is connected to the sealing rubber, and the upper end of the first return spring abuts against the top of the movable cavity.

[0010] Preferably, the lower end of the second return spring is sleeved on the connecting block, the threaded rod and the adjusting block are fixedly connected, and the threaded rod is connected to the threaded hole on the valve body. The cylinder is fixed to the lower end of the threaded rod and is connected to the upper end of the second return spring.

[0011] Preferably, the clamping assembly includes a clamping ring, an elastic sheet, a plug-in post, and a connecting plate. The clamping ring is fixedly connected to the elastic sheet, the plug-in post is disposed on the elastic sheet and is engaged with the plug-in groove, and the connecting plate is symmetrically installed on the clamping ring.

[0012] Compared with the prior art, this utility model has the following beneficial effects: This improved new energy battery explosion-proof valve, through its elastic sealing structure and the use of a first and a second return spring, can improve the stability of the sealing rubber. The second return spring is connected to a threaded rod via a cylinder, and the threaded rod can be moved within the threaded hole by rotating the adjusting block, thereby changing the compression degree of the second return spring and adjusting the force applied to the sealing rubber. This ensures that even after the spring's elasticity decreases over a long period of use, a corresponding force is still applied, guaranteeing the sealing effect. Furthermore, the use of a clamping component, after the threaded joint is connected to the battery, provides a clamping force by contacting the battery, further increasing the stability of the entire explosion-proof valve and preventing it from falling off due to vibration, thus ensuring the normal operation of explosion-proof pressure relief. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the elastic sealing structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the clamping component of this utility model.

[0017] In the diagram: 1. Valve body; 2. Threaded connector; 3. Channel; 4. Movable cavity; 5. Vent hole; 6. Elastic sealing structure; 601. Sealing rubber; 602. Connecting block; 603. First return spring; 604. Second return spring; 605. Threaded rod; 606. Adjusting block; 607. Cylindrical part; 7. Clamping assembly; 701. Clamping ring; 702. Elastic sheet; 703. Insertion post; 704. Connecting plate; 8. Threaded hole; 9. Insertion groove. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-4 As shown, an improved explosion-proof valve for new energy batteries includes a valve body 1. A threaded connector 2 is fixedly connected to the lower end of the valve body 1, and the threaded connector 2 has an internal channel 3. The valve body 1 has a movable cavity 4, and an exhaust hole 5 is provided on the valve body 1, which communicates with the channel 3. An elastic sealing structure 6 is provided inside the valve body 1, and a clamping component 7 is provided at the lower end of the valve body 1. A threaded hole 8 is provided on the valve body 1, and the upper end of the elastic sealing structure 6 is installed in the threaded hole 8 on the valve body 1. A insertion groove 9 is provided at the lower end of the valve body 1, and the insertion grooves 9 are arranged in a ring array on the valve body 1. The clamping component 7 is fixedly installed at the lower end of the valve body 1 through the insertion groove 9.

[0020] During installation of the battery explosion-proof valve, the threaded connector 2 at the lower end of the valve body 1 is used to install the entire explosion-proof valve onto the new energy battery. The clamping component 7 is compressed to provide elastic force, giving the explosion-proof valve good stability. During use, when the internal pressure of the battery is low, the elastic sealing structure 6 blocks the channel 3, isolating the inside and outside of the battery. When heat is generated inside the battery, the air pressure increases. When the air pressure exceeds the force applied by the elastic sealing structure 6, the channel 3 connects with the vent 5, and the battery begins to depressurize, thus achieving the purpose of explosion prevention.

[0021] According to the above implementation scheme, the elastic sealing structure 6 includes a sealing rubber 601, a connecting block 602, a first return spring 603, a second return spring 604, a threaded rod 605, an adjusting block 606, and a cylinder 607. The sealing rubber 601 is fixedly connected to the connecting block 602 and is located in the movable cavity 4. The first return spring 603 is connected to the sealing rubber 601, and its upper end abuts against the top of the movable cavity 4. The lower end of the second return spring 604 is sleeved on the connecting block 602. The threaded rod 605 and the adjusting block 606 are fixedly connected, and the threaded rod 605 is connected to the threaded hole 8 on the valve body 1. The cylinder 607 is fixed to the lower end of the threaded rod 605 and is connected to the upper end of the second return spring 604.

[0022] In the initial state, under the combined action of the first return spring 603 and the second return spring 604 on the connecting block 602, the sealing rubber 601 contacts the lower end of the movable cavity 4, blocking the channel 3. When heat is generated inside the battery and the gas pressure rises, the sealing rubber 601 moves under the action of the gas pressure, compressing the first return spring 603 and the second return spring 604. The channel 3 and the exhaust port 5 are connected, and the hot gas inside the battery is discharged and depressurized through the channel 3 and the exhaust port 5, thereby achieving the purpose of explosion prevention. When the spring force decreases after long-term use, the threaded rod 605 can be rotated by adjusting the adjusting block 606. The threaded rod 605 rotates and descends in the threaded hole 8, thereby compressing the cylinder 607 and the second return spring 604 on the connecting block 602, so that the second return spring 604 provides a larger force, ensuring that the force of all return springs on the sealing rubber 601 is kept within a certain range, and avoiding the decrease in force from affecting the normal operation of explosion prevention and depressurization.

[0023] According to the above implementation scheme, the clamping component 7 includes a clamping ring 701, an elastic sheet 702, a plug post 703 and a connecting plate 704. The clamping ring 701 is fixedly connected to the elastic sheet 702. The plug post 703 is disposed on the elastic sheet 702 and is engaged with the plug groove 9. The connecting plate 704 is symmetrically installed on the clamping ring 701.

[0024] When installing the clamping assembly 7, the insertion post 703 on the elastic plate 702 is connected to the insertion slot 9 to complete the installation of the clamping assembly 7. In use, force is first applied through the connecting plate 704, and the elastic plate 702 is compressed. After the threaded joint 2 is installed, the clamping ring 701 contacts the corresponding structure in the battery. Under the elastic force of the elastic plate 702, the clamping ring 701 is in close contact with the structure in the battery, thereby applying a clamping force to the explosion-proof valve, ensuring that the explosion-proof valve has good stability and guaranteeing the use effect.

[0025] It should be noted that the elastic sealing structure 6, with its first return spring 603 and second return spring 604, improves the stability of the sealing rubber 601. The second return spring 604 is connected to the threaded rod 605 via a cylinder 607. The threaded rod 605 can be moved within the threaded hole 8 by rotating the adjusting block 606, thereby changing the compression of the second return spring 604 and adjusting the force applied to the sealing rubber 601. This ensures that even after the spring's elasticity decreases over time, a corresponding force is still applied, guaranteeing the sealing effect. The clamping component 7, after the threaded connector 2 is connected to the battery, contacts the battery to provide clamping force, further increasing the stability of the entire explosion-proof valve and preventing it from falling off due to vibration, thus ensuring the normal operation of explosion-proof pressure relief.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An improved explosion-proof valve for new energy batteries, comprising a valve body (1), wherein a threaded connector (2) is fixedly connected to the lower end of the valve body (1), and the threaded connector (2) has an internal channel (3), the valve body (1) has an internal movable cavity (4), and an exhaust hole (5) is provided on the valve body (1), the exhaust hole (5) being connected to the channel (3), characterized in that: The valve body (1) is provided with an elastic sealing structure (6), and the lower end of the valve body (1) is provided with a clamping component (7).

2. The improved explosion-proof valve for new energy batteries according to claim 1, characterized in that: The valve body (1) has a threaded hole (8), and the upper end of the elastic sealing structure (6) is installed in the threaded hole (8) on the valve body (1).

3. The improved explosion-proof valve for new energy batteries according to claim 2, characterized in that: The lower end of the valve body (1) is provided with a plug groove (9), and the plug groove (9) is arranged in a ring array on the valve body (1). The clamping component (7) is fixedly installed at the lower end of the valve body (1) through the plug groove (9).

4. The improved explosion-proof valve for new energy batteries according to claim 3, characterized in that: The elastic sealing structure (6) includes a sealing rubber (601), a connecting block (602), a first return spring (603), a second return spring (604), a threaded rod (605), an adjusting block (606), and a cylinder (607). The sealing rubber (601) is fixedly connected to the connecting block (602), and the sealing rubber (601) is located in the movable cavity (4). The first return spring (603) is connected to the sealing rubber (601), and the upper end of the first return spring (603) abuts against the top of the movable cavity (4).

5. An improved explosion-proof valve for new energy batteries according to claim 4, characterized in that: The lower end of the second return spring (604) is sleeved on the connecting block (602). The threaded rod (605) and the adjusting block (606) are fixedly connected, and the threaded rod (605) is connected in the threaded hole (8) on the valve body (1). The cylinder (607) is fixed at the lower end of the threaded rod (605), and the cylinder (607) is connected to the upper end of the second return spring (604).

6. An improved explosion-proof valve for new energy batteries according to claim 5, characterized in that: The clamping assembly (7) includes a clamping ring (701), an elastic sheet (702), a plug post (703), and a connecting plate (704). The clamping ring (701) is fixedly connected to the elastic sheet (702). The plug post (703) is disposed on the elastic sheet (702) and is engaged with the plug groove (9). The connecting plate (704) is symmetrically installed on the clamping ring (701).

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