A safety valve for gel batteries

Abstract

This utility model relates to the field of gel battery technology, specifically to a safety valve for gel batteries, including a valve body. The valve body includes a torsion body and a valve cap moving body. The valve cap moving body is located directly above the valve cap moving body. The outer side of the torsion body is provided with several anti-slip stripes. A valve body cover is welded inside the torsion body. A rubber sealing ring is fixedly connected to the outer side of the valve cap moving body. A safety valve cap is slidably disposed inside the valve cap moving body. The inside of the torsion body is a cylindrical cavity with a bottom area of ​​L1. The inside of the valve cap moving body is a cylindrical cavity with a bottom area of ​​L2, and L1>L2. This utility model, through the structure of the safety valve cap sliding inside the valve cap moving body, ensures smooth gas flow and improves exhaust efficiency when the top of the safety valve cap slides into the inside of the torsion body, without obstructing gas flow.

Description

Technical Field

[0001] This utility model relates to the field of gel battery technology, specifically to a gel battery safety valve. Background Technology

[0002] In the field of new energy and energy storage, gel batteries are widely used in backup power supplies, electric vehicles and other scenarios due to their advantages such as long cycle life and high safety. As the core safety component of gel batteries, the industry has set higher standards for safety valves.

[0003] In traditional safety valves, the gas flow channels are mostly independent side holes or narrow slits, and these channels are independent of the sliding trajectory of the valve cap. When the valve cap moves under pressure, its edge is prone to blocking the channel inlet, which can obstruct the airflow, resulting in low exhaust efficiency. If the gas pressure is too high and the gas is not discharged in time, it may cause the battery casing to bulge.

[0004] Therefore, a safety valve for gel batteries is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a safety valve for gel batteries that can solve the problem of valve caps easily obstructing airflow.

[0006] To achieve the above objectives, the present invention provides the following technical solution: including a valve body, wherein the valve body includes a torsion body and a valve cap moving body;

[0007] The valve cap moving body is located directly above the valve cap moving body. Several anti-slip stripes are provided on the outer side of the twisting body. A valve body cover is welded inside the twisting body. A rubber sealing ring is fixedly connected to the outer side of the valve cap moving body. A safety valve cap is slidably disposed inside the valve cap moving body. The inside of the twisting body is set as a cylindrical cavity with a bottom area of ​​L1. The inside of the valve cap moving body is set as a cylindrical cavity with a bottom area of ​​L2, and L1>L2.

[0008] Preferably, a cover plate welding cavity is provided through the inside of the torsion body, the cover plate welding cavity is located near the outer side of the torsion body, the valve body cover plate is welded to the inside of the cover plate welding cavity, and an exhaust hole is provided through the surface of the valve body cover plate, the exhaust hole extending into the inside of the torsion body.

[0009] Preferably, an annular limiting plate is fixedly provided on the inner wall of the valve cap moving body, the safety valve cap is slidably disposed inside the annular limiting plate, and the safety valve cap is tightly fitted to the inner wall of the annular limiting plate.

[0010] Preferably, an anti-acid mist plate is fixedly provided on the upper end of the safety valve cap, the anti-acid mist plate is slidably disposed inside the valve cap moving body, the anti-acid mist plate is disposed above the annular limiting plate, and the anti-acid mist plate is tightly attached to the inner wall of the valve cap moving body.

[0011] Preferably, a gas flow cavity and a sliding groove are provided opposite to each other on the outer side of the annular limiting plate. The gas flow cavity and the sliding groove are opened through the outer side of the annular limiting plate and extend to the outer side of the safety valve cap. An upper limiting bracket and a lower limiting bracket are provided opposite to each other on the outer side of the safety valve cap. The upper limiting bracket and the lower limiting bracket are fixedly disposed on the outer side of the safety valve cap. The upper limiting bracket is slidably disposed inside the gas flow cavity, and the lower limiting bracket is slidably disposed inside the sliding groove.

[0012] Preferably, the overall length of the assembly gap between the top of the safety valve cap and the valve body cover is defined as L, and 2mm≤L≤3mm.

[0013] Preferably, the valve body has a threaded knob-type valve body structure, and an external thread is provided on the outer side of the valve body. The external thread is located on the outer side of the valve cap moving body, and a matching internal thread is machined on the inner wall of the pre-set assembly hole of the corresponding gel battery cover.

[0014] Preferably, the valve body is a snap-on knob type valve body structure, with an elastic snap on the outside of the valve body and a barb structure at the end of the elastic snap. The elastic snap is located on the outside of the valve cap moving body, and the inner wall of the corresponding gel battery cover preset assembly hole is provided with a groove that matches the snap.

[0015] Compared with the prior art, this utility model provides a safety valve for gel batteries, which has the following beneficial effects:

[0016] 1. This utility model has a structure in which the bottom area of ​​the cylindrical cavity inside the torsion body is larger than the bottom area of ​​the cylindrical cavity inside the valve cap moving body, and the safety valve cap slides inside the valve cap moving body. When the top of the safety valve cap slides into the inside of the torsion body, it will not block the gas flow, thus ensuring the smoothness of gas flow and improving exhaust efficiency.

[0017] 2. This utility model features an annular limiting plate on the inner wall of the valve cap moving body, and an upper and lower limiting bracket on the outer side of the safety valve cap. These brackets slide within the gas flow cavity and groove of the annular limiting plate, respectively. This structure provides stable guidance for the movement of the safety valve cap, ensuring accurate sliding trajectory. At the same time, the gas flow cavity provides a channel for gas flow, making the exhaust process more stable and efficient. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the snap-on knob valve body structure of the gel battery safety valve proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the threaded knob valve body structure of the colloidal battery safety valve proposed in this utility model.

[0020] Figure 3 This is a schematic diagram showing the welding position of the valve body cover plate of the colloidal battery safety valve proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the internal structure of the valve body of the colloidal battery safety valve proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the valve cap sealing structure of the colloidal battery safety valve proposed in this utility model;

[0023] Figure 6 This is a schematic diagram of the venting structure of the valve cap of the colloidal battery safety valve proposed in this utility model.

[0024] In the diagram: 1. Valve body; 2. Rubber sealing ring; 3. Torsion body; 4. Valve cap moving body; 5. Valve body cover; 6. Cover welding cavity; 7. Anti-slip stripes; 8. Safety valve cap; 9. Anti-acid mist plate; 10. Annular limiting plate; 11. Exhaust port; 12. Upper limiting bracket; 13. Lower limiting bracket; 14. Gas flow cavity; 15. Slide groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] Please see Figure 1 - Figure 6This embodiment of a gel battery safety valve includes a valve body 1, which includes a torsion body 3 and a valve cap moving body 4. The torsion body 3 is configured as the upper part of the valve body 1, and the valve cap moving body 4 is configured as the lower part of the valve body 1. The torsion body 3 and the valve cap moving body 4 are connected as a whole to form the valve body 1. Several anti-slip stripes 7 are provided on the outer side of the torsion body 3. A valve body cover 5 is welded inside the torsion body 3. A rubber sealing ring 2 is fixedly connected to the outer side of the valve cap moving body 4. A safety valve cap 8 is slidably disposed inside the valve cap moving body 4. The inside of the torsion body 3 is configured as a cylindrical cavity with a bottom area of ​​L1. The inside of the valve cap moving body 4 is configured as a cylindrical cavity with a bottom area of ​​L2, and L1>L2.

[0028] Twisting the torsion body 3 with anti-slip stripes 7 fixes the valve body 1 to the inner cover of the gel battery. At this time, the rubber sealing ring 2 on the outside of the valve body 1 contacts the inner cover to form a seal, ensuring the battery's airtightness. When there is too much gas inside the battery, causing the pressure to increase, the gas moves upward and pushes the safety valve cap 8, causing the safety valve cap 8 to slide inside the valve cap moving body 4. When the top of the safety valve cap 8 slides into the inside of the torsion body 3, since L1>L2, the part of the safety valve cap 8 located inside the torsion body 3 will not block the gas flow. The gas passes through the valve cap moving body 4, the torsion body 3, and the valve body cover 5 in sequence to the outside of the valve body 1, thereby reducing the internal pressure of the battery. When the pressure returns to normal, the safety valve cap 8 resets and re-seales, ensuring the normal operation of the battery. At the same time, the valve body cover 5 is fixed to the valve body 1 by welding, avoiding the problem of unstable sealing that may be caused by manual gluing and assembly.

[0029] The inside of the torsion body 3 is provided with a cover plate welding cavity 6, which is located near the outer side of the torsion body 3. The valve body cover plate 5 is welded to the inside of the cover plate welding cavity 6. The surface of the valve body cover plate 5 is provided with an exhaust hole 11, which extends into the inside of the torsion body 3.

[0030] When the gas flows inside the valve body 1, it is eventually discharged to the outside of the valve body 1 through the exhaust hole 11 on the surface of the valve body cover 5.

[0031] An annular limiting plate 10 is fixedly installed on the inner wall of the valve cap moving body 4. The safety valve cap 8 is slidably installed inside the annular limiting plate 10, and the safety valve cap 8 is tightly fitted to the inner wall of the annular limiting plate 10. An anti-acid mist plate 9 is fixedly installed at the upper end of the safety valve cap 8. The anti-acid mist plate 9 is slidably installed inside the valve cap moving body 4 and is located above the annular limiting plate 10. The anti-acid mist plate 9 is tightly fitted to the inner wall of the valve cap moving body 4. A gas flow cavity 14 and a sliding groove are opened opposite each other on the outer side of the annular limiting plate 10. 15. The gas flow chamber 14 and the slide groove 15 are opened through the outer side of the annular limiting plate 10. The gas flow chamber 14 and the slide groove 15 extend to the outer side of the safety valve cap 8. An upper limiting bracket 12 and a lower limiting bracket 13 are arranged opposite to each other on the outer side of the safety valve cap 8. The upper limiting bracket 12 and the lower limiting bracket 13 are fixedly arranged on the outer side of the safety valve cap 8. The upper limiting bracket 12 is slidably arranged inside the gas flow chamber 14, and the lower limiting bracket 13 is slidably arranged inside the slide groove 15.

[0032] When excessive gas inside the battery causes increased pressure, the gas moves upward, pushing the safety valve cap 8 to move. The movement of the safety valve cap 8 causes the upper limiting bracket 12, the lower limiting bracket 13, and the anti-acid mist plate 9 to move together. At the same time, the upper limiting bracket 12 moves inside the gas flow chamber 14, the lower limiting bracket 13 moves inside the slide groove 15, and the anti-acid mist plate 9 moves inside the valve cap moving body 4. When the lower limiting bracket 13 moves to the top of the slide groove 15, the upper limiting bracket 12 moves above the annular limiting plate 10, and the anti-acid mist plate 9 moves inside the torsion body 3. This allows the gas to move through the gas flow chamber 14, the valve cap moving body 4, and the torsion body 3, and is discharged to the outside of the valve body 1 through the exhaust hole 11 on the surface of the valve body cover 5, thereby reducing the internal pressure of the battery. When the pressure returns to normal, the safety valve cap 8 resets, resealing and ensuring the normal operation of the battery.

[0033] The overall length of the assembly gap between the top of the safety valve cap 8 and the valve body cover 5 is defined as L, and 2mm≤L≤3mm;

[0034] There is an assembly gap between the top of the safety valve cap 8 and the valve body cover 5, which provides space for the safety valve cap 8 to rise when the gas pushes it.

[0035] Example 2:

[0036] Please see Figure 1 , Figure 4This embodiment of a gel battery safety valve includes a valve body 1, which comprises a torsion body 3 and a valve cap moving body 4. The torsion body 3 is configured as the upper part of the valve body 1, and the valve cap moving body 4 is configured as the lower part of the valve body 1. The torsion body 3 and the valve cap moving body 4 are connected as a whole to form the valve body 1. Several anti-slip stripes 7 are provided on the outer side of the torsion body 3. A valve body cover 5 is welded inside the torsion body 3. A rubber sealing ring 2 is fixedly connected to the outer side of the valve cap moving body 4, and a sliding mechanism is provided inside the valve cap moving body 4. The safety valve cap 8 and the torsion body 3 are internally set as cylindrical cavities with a bottom area of ​​L1. The valve cap moving body 4 is internally set as cylindrical cavities with a bottom area of ​​L2, and L1>L2. The valve body 1 is a snap-on knob valve body structure. The valve body 1 is provided with an elastic snap on the outside. The end of the elastic snap is provided with a barb structure. The elastic snap is provided on the outside of the valve cap moving body 4. The inner wall of the corresponding gel battery cover pre-set assembly hole is provided with a slot that matches the snap.

[0037] During installation, align valve body 1 with the mounting hole of the middle cover, press valve body 1 axially to deform the buckle until the buckle is fully inserted into the mounting hole of the middle cover, twist the twisting body 3 with anti-slip stripes 7 to make the barb at the end of the buckle precisely engage with the groove of the middle cover, and at the same time, the rubber sealing ring 2 on the outside of valve body 1 makes tight contact with the surface of the middle cover to form a seal. When there is too much gas inside the battery and the pressure increases, the gas moves upward and pushes the safety valve cap 8, causing the safety valve cap 8 to slide inside the valve cap moving body 4. When the top of the safety valve cap 8 slides into the inside of the twisting body 3, the gas passes through the valve cap moving body 4, the twisting body 3, and the valve body cover 5 in sequence to the outside of valve body 1, thereby reducing the internal pressure of the battery. When the pressure returns to normal, the safety valve cap 8 resets and re-seals. At the same time, the valve body cover 5 is fixed to the valve body 1 by welding to avoid the problem of unstable sealing that may be caused by manual glue application and assembly.

[0038] Example 3:

[0039] Please see Figure 2 , Figure 4This embodiment of a gel battery safety valve includes a valve body 1, which includes a torsion body 3 and a valve cap moving body 4. The torsion body 3 is the upper part of the valve body 1, and the valve cap moving body 4 is the lower part of the valve body 1. The torsion body 3 and the valve cap moving body 4 are connected as a whole to form the valve body 1. The outside of the torsion body 3 is provided with several anti-slip stripes 7. A valve body cover 5 is welded inside the torsion body 3. A rubber sealing ring 2 is fixedly connected to the outside of the valve cap moving body 4. A safety valve cap 8 is slidably arranged inside the valve cap moving body 4. The inside of the torsion body 3 is a cylindrical cavity with a bottom area of ​​L1. The inside of the valve cap moving body 4 is a cylindrical cavity with a bottom area of ​​L2, and L1>L2. The valve body 1 has a threaded knob valve body structure. The outside of the valve body 1 is provided with an external thread, which is located on the outside of the valve cap moving body 4. The inner wall of the corresponding gel battery middle cover pre-set assembly hole is machined with a matching internal thread.

[0040] Twist the torsion body 3 with anti-slip stripes 7 to align the valve body 1 with the mounting hole of the middle cover. Rotate the torsion body 3 to gradually engage the external thread of the valve body 1 with the internal thread of the middle cover until the rubber sealing ring 2 in the outer groove of the valve body 1 is tightly attached to the surface of the middle cover and deforms to form a seal. When there is too much gas inside the battery and the pressure increases, the gas moves upward and pushes the safety valve cap 8, causing the safety valve cap 8 to slide inside the valve cap moving body 4. When the top of the safety valve cap 8 slides into the inside of the torsion body 3, the gas passes through the valve cap moving body 4, the torsion body 3, and the valve body cover 5 in sequence to the outside of the valve body 1, thereby reducing the internal pressure of the battery. When the pressure returns to normal, the safety valve cap 8 resets and re-seales. At the same time, the valve body cover 5 is fixed to the valve body 1 by welding to avoid the problem of unstable sealing that may be caused by manual glue application and assembly.

[0041] The working principle of the above embodiment is as follows: Twisting the torsion body 3 with anti-slip stripes 7 fixes the valve body 1 to the inner cover of the gel battery. At this time, the rubber sealing ring 2 on the outside of the valve body 1 contacts the inner cover to form a seal, ensuring battery sealing. When excessive gas inside the battery causes increased pressure, the gas pushes the safety valve cap 8 upwards, causing the upper limiting bracket 12 to slide inside the gas flow chamber 14 of the annular limiting plate 10, the lower limiting bracket 13 to slide inside the slide groove 15, and the anti-acid mist sheet 9 to slide inside the valve cap moving body 4. When the lower limiting bracket 13 moves to the top of the slide groove 15, the upper limiting bracket 12 moves above the annular limiting plate 10, and the anti-acid mist sheet... 9 and the top of the safety valve cap 8 enter the interior of the torsion body 3. The assembly gap between the top of the safety valve cap 8 and the valve body cover 5 is 2-3mm, providing space for movement. At this time, the gas passes through the gas flow chamber 14, the interior of the valve cap moving body 4, and the interior of the torsion body 3 in sequence, and finally exits to the outside of the valve body 1 through the exhaust hole 11 on the surface of the valve body cover 5, reducing the internal pressure of the battery. When the pressure returns to normal, the safety valve cap 8 resets and re-seals by tightly fitting with the annular limiting plate 10. At the same time, the valve body cover 5 and the valve body 1 are fixed by welding to ensure the normal operation of the battery. The two types of valve bodies 1 and the selection of multiple materials are adapted to the needs of different battery models and application scenarios.

[0042] The connection between the two types of valve body 1 and the gel battery is an existing technology. The installation method, connection method or setting method disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. They are common knowledge in the field. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gel battery safety valve characterized by: It includes a valve body (1), which includes a torsion body (3) and a valve cap moving body (4); The valve cap moving body (4) is located directly above the valve cap moving body (4). Several anti-slip stripes (7) are provided on the outside of the twisting body (3). A valve body cover plate (5) is welded inside the twisting body (3). A rubber sealing ring (2) is fixedly connected to the outside of the valve cap moving body (4). A safety valve cap (8) is slidably arranged inside the valve cap moving body (4). The inside of the twisting body (3) is set as a cylindrical cavity. The bottom area of ​​the cavity inside the twisting body (3) is L1. The inside of the valve cap moving body (4) is set as a cylindrical cavity. The bottom area of ​​the cavity inside the valve cap moving body (4) is L2, and L1>L2.

2. A gelled cell safety valve according to claim 1, wherein: The inside of the torsion body (3) is provided with a cover plate welding cavity (6), which is located near the outside of the torsion body (3). The valve body cover (5) is welded to the inside of the cover plate welding cavity (6). The surface of the valve body cover (5) is provided with an exhaust hole (11), which extends into the inside of the torsion body (3).

3. The gelled battery safety valve of claim 1, wherein: An annular limiting plate (10) is fixedly provided on the inner wall of the valve cap moving body (4), and the safety valve cap (8) is slidably disposed inside the annular limiting plate (10), and the safety valve cap (8) is tightly attached to the inner wall of the annular limiting plate (10).

4. A gelled cell safety valve according to claim 3, wherein: An anti-acid mist sheet (9) is fixedly provided on the upper end of the safety valve cap (8). The anti-acid mist sheet (9) is slidably disposed inside the valve cap moving body (4). The anti-acid mist sheet (9) is disposed above the annular limiting plate (10). The anti-acid mist sheet (9) is tightly attached to the inner wall of the valve cap moving body (4).

5. The gelled battery safety valve of claim 3, wherein: The annular limiting plate (10) has a gas flow cavity (14) and a sliding groove (15) on its outer side. The gas flow cavity (14) and the sliding groove (15) are opened through the outer side of the annular limiting plate (10) and extend to the outer side of the safety valve cap (8). The safety valve cap (8) has an upper limiting bracket (12) and a lower limiting bracket (13) on its outer side. The upper limiting bracket (12) and the lower limiting bracket (13) are fixedly installed on the outer side of the safety valve cap (8). The upper limiting bracket (12) is slidably installed inside the gas flow cavity (14), and the lower limiting bracket (13) is slidably installed inside the sliding groove (15).

6. The gelled battery safety valve of claim 1, wherein: The overall length of the assembly gap between the top of the safety valve cap (8) and the valve body cover (5) is defined as L, and 2mm≤L≤3mm.

7. The gelled battery safety valve of claim 1, wherein: The valve body (1) is a screw-knob type valve body structure. The valve body (1) has an external thread on its outer side. The external thread is located on the outer side of the valve cap moving body (4). The inner wall of the corresponding gel battery cover pre-mounted assembly hole is machined with a matching internal thread.

8. The safety valve for gel batteries according to claim 1, characterized in that: The valve body (1) is a snap-on knob valve body structure. An elastic snap is provided on the outside of the valve body (1). The end of the elastic snap is provided with a barb structure. The elastic snap is located on the outside of the valve cap moving body (4). The inner wall of the corresponding gel battery cover preset assembly hole is provided with a slot that matches the snap.

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