Waterproof battery sealing ring

Abstract

A waterproof battery sealing ring comprises a plastic sealing ring body, and the plastic sealing ring body comprises an upper-layer large ring section and a lower-layer small ring section and is provided with inner cavities which are communicated with each other; a first opening is formed in the outer wall of the upper-layer large ring section, the large-diameter deformable sealing gasket is arranged in the inner cavity, and at least part of the large-diameter deformable sealing gasket extends out of the outer side of the upper-layer large ring section through the first opening; a second opening is formed in the outer wall of the lower-layer small ring section, the small-diameter deformable sealing gasket is arranged in the inner cavity, and at least part of the small-diameter deformable sealing gasket extends out of the outer side of the small-layer large ring section through the second opening; and the plastic bottom cover is connected to the bottom of the plastic sealing ring body so as to seal the inner cavity. According to the utility model, a dual-sealing structure of the large-diameter deformable sealing gasket and the small-diameter deformable sealing gasket is adopted, so that the assembly clearance between parts is effectively supplemented, and reliable waterproof and sealing effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of alkaline battery accessories, in particular to a waterproof battery sealing ring. Background Art

[0002] With the development of the economy and the continuous improvement of people's living standards, battery technology has also made great progress; alkaline batteries are one of the most commonly used batteries by people at present, and alkaline batteries have the advantages of low cost and portability.

[0003] Alkaline batteries, also known as alkaline dry batteries, alkaline zinc-manganese batteries, and alkaline manganese batteries, are the best-performing varieties in the zinc-manganese battery series. They are suitable for applications that require high discharge capacity and long-term use. The internal resistance of the battery is relatively low, so the generated current is larger than that of general carbon batteries. Since these batteries do not contain mercury, they can be disposed of with household waste without the need for special recycling. Alkaline batteries adopt an electrode structure opposite to that of ordinary batteries in terms of structure, increasing the relative area between the positive and negative electrodes. Moreover, a highly conductive potassium hydroxide solution is used to replace the ammonium chloride and zinc chloride solutions, and the negative electrode zinc is changed from a flake shape to a granular shape, increasing the reaction area of the negative electrode. Coupled with the use of high-performance electrolytic manganese powder, the electrical performance has been greatly improved. Generally, alkaline batteries of the same model have a capacity and discharge time 3-7 times that of ordinary batteries, and the difference in low-temperature performance is even greater. Alkaline batteries are more suitable for applications that require continuous high-current discharge and a high working voltage, especially for cameras, flashlights, razors, electric toys, CD players, high-power remote controls, wireless mice, keyboards, etc.

[0004] Long-term stored alkaline batteries will leak electrolyte. Since the electrolyte is the corrosive alkaline substance potassium hydroxide, it will irritate the eyes, respiratory tract and skin; the electrolyte will also corrode metals and damage electronic components. Therefore, the electrolyte leaked from the battery will also damage the products using the battery, especially electronic products. The performance of the sealing ring is the key factor in solving the waterproof, explosion-proof and leak-proof problems of the battery. At the same time, the structure of the sealing ring also has an obvious impact on the internal space of the battery. How to increase the effective space inside the battery to increase the filling amount of the positive and negative active substances of the battery is a necessary means to improve the overall discharge capacity of the battery. Therefore, how to optimize the structure of the battery sealing ring and the research of the sealing ring material are the main research directions of the sealing ring technology. Due to the limitation of the structure of the connecting part of the sealing ring itself, the strength of the connecting part itself is limited. Therefore, in the existing structure of the sealing ring, simply relying on the connecting part to connect the central column and the outer peripheral part can no longer meet the explosion-proof and leak-proof requirements of alkaline dry batteries.

[0005] Example of the prior art. Referring to the patent document CN216720107U, which belongs to a technology developed by the applicant previously, it discloses a sealing ring structure of an alkaline dry battery, including a central column body, a transition connection end face, and a gland side skirt that are integrally injection-molded and arranged in sequence from inside to outside. A through hole for a conductor to pass through is provided on the central column body. A breathable film is also connected between the central column body and the gland side skirt. An accommodation cavity is formed between the breathable film and the transition connection end face, and an endothermic flame-retardant layer is filled in the accommodation cavity.

[0006] In the above technical example, the sealing ring provides an explosion-proof and leak-proof structural solution for the alkaline dry battery, but it ignores the waterproof and sealing problems, that is, there will be a certain gap between the sealing ring and the battery shell after assembly, which will cause substances such as water vapor to have the opportunity to pass through the gap. When the internal battery liquid comes into contact with the water vapor substances, various unstable reaction manifestations will occur, and problems such as increased internal pressure, convex explosion, and leakage will appear. Summary of the Invention

[0007] In order to overcome the above deficiencies of the prior art, the present utility model provides a waterproof battery sealing ring.

[0008] The technical solution for the present utility model to solve its technical problems is: A waterproof battery sealing ring, including:

[0009] A plastic sealing ring body, including an upper large-ring section and a lower small-ring section that are integrally formed, and there is an inner cavity body that is mutually connected between the upper large-ring section and the lower small-ring section;

[0010] A large-diameter deformable sealing gasket. A first opening is provided on the outer wall of the upper large-ring section. The large-diameter deformable sealing gasket is arranged in the inner cavity body and at least partially extends out of the outer side of the upper large-ring section through the first opening;

[0011] A small-diameter deformable sealing gasket. A second opening is provided on the outer wall of the lower small-ring section. The small-diameter deformable sealing gasket is arranged in the inner cavity body and at least partially extends out of the outer side of the small large-ring section through the second opening;

[0012] A plastic bottom cover, which is detachably connected to the bottom of the plastic sealing ring body to seal the inner cavity body.

[0013] Preferably, a rigid support frame is provided between the large-diameter deformable sealing gasket and the small-diameter deformable sealing gasket, and the rigid support frame divides the space between the large-diameter deformable sealing gasket and the small-diameter deformable sealing gasket into several avoidance cavity bodies.

[0014] Furthermore, the rigid support frame is in a cross shape, an upper positioning groove is provided at the lower end of the large-diameter deformable sealing gasket, and a lower positioning groove is provided at the upper end of the small-diameter deformable sealing gasket. The upper end of the rigid support frame is at least partially embedded in the upper positioning groove, and the lower end of the rigid support frame is at least partially embedded in the lower positioning groove.

[0015] In some preferred embodiments of the present invention, the air-avoiding cavity is filled with alkaline battery adsorption particles.

[0016] Preferably, the alkaline battery adsorption particles are sodium bicarbonate particles or activated carbon particles.

[0017] In some preferred embodiments of the utility model, a PH test paper is provided in the air-avoiding cavity, the PH test paper is attached to the lower end of the large-diameter deformable sealing gasket, the alkaline battery adsorption particles are located between the PH test paper and the small-diameter deformable sealing gasket, and the plastic sealing ring body is transparent.

[0018] Optionally, a metal annular filament skeleton is embedded inside the large-diameter deformable sealing gasket and the small-diameter deformable sealing gasket.

[0019] Optionally, the upper large ring segment and the lower small ring segment are both in the shape of an inverted cone.

[0020] In some preferred embodiments of the utility model, the plastic bottom cover is provided with a first groove, a first magnet is provided in the first groove, and an upper end surface of the first magnet is flush with an upper end surface of the plastic bottom cover;

[0021] A second groove is provided at the lower end of the small-diameter deformable sealing gasket, a second magnet is provided in the second groove, and an upper end surface of the second magnet is flush with a lower end surface of the small-diameter deformable sealing gasket;

[0022] When the plastic bottom cover is close to the small-diameter deformable sealing gasket, a magnetic force is generated between the first magnet and the second magnet to adsorb the plastic bottom cover to the lower end of the small-diameter deformable sealing gasket.

[0023] In some preferred embodiments of the utility model, the upper end of the plastic sealing ring body has an explosion-proof breakthrough zone, and the explosion-proof breakthrough zone is composed of a plurality of explosion-proof grooves distributed in an annular shape;

[0024] The large-diameter deformable sealing gasket has a thinned section, and the thinned section is located opposite to the explosion-proof breakthrough zone.

[0025] The beneficial effects of the utility model are:

[0026] 1. By setting the large-diameter deformable sealing gasket, when the sealing ring is integrally installed in the battery housing, the large-diameter deformable sealing gasket can abut against the inner wall of the battery housing, effectively compensating for the assembly gap between components, thereby playing a reliable first waterproof and sealing role.

[0027] 2. By setting the small-diameter deformable sealing gasket, when the sealing ring is integrally installed in the battery housing, the small-diameter deformable sealing gasket can abut against the inner wall of the battery accessory (such as a breather plate or an insulating cover), effectively compensating for the assembly gap between components, thereby playing a reliable second waterproof and sealing role.

[0028] 3. By setting the plastic bottom cover, the large-diameter deformable sealing gasket and the small-diameter deformable sealing gasket can be wrapped in the inner cavity, preventing them from coming into long-term and large-area contact with substances such as battery fluid, thereby reducing the probability of corrosion and extending the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the use of the present utility model in a battery.

[0030] Figure 2 is an exploded view of the present utility model.

[0031] Figure 3 is a cross-sectional view of the present utility model.

[0032] Figure 4 is a schematic diagram of the structure of the plastic sealing ring body.

[0033] Figure 5 is a schematic diagram of the structure of the other side of the plastic sealing ring body.

[0034] Figure 6 is a schematic diagram of the structure of Embodiment 2.

[0035] Figure 7 is a schematic diagram of the structure of the metal annular filamentous skeleton.

[0036] In the figure: 1. Plastic sealing ring body; 11. Upper large-ring section; 12. Lower small-ring section; 1a. Inner cavity; 13. First opening; 14. Second opening; 15. Explosion-proof breakthrough area; 2. Large-diameter deformable sealing gasket; 21. Upper positioning groove; 22. Thinning section; 3. Small-diameter deformable sealing gasket; 31. Lower positioning groove; 32. Second groove; 33. Second magnet; 4. Plastic bottom cover; 41. First groove; 42. First magnet; 5. Rigid support frame; 5a. Avoidance cavity; 51. Metal annular filamentous skeleton; 52. PH test paper; 53. Alkaline battery adsorption particles; 6. Metal annular filamentous skeleton; 7. Battery housing; 71. Alkaline battery fluid; 72. Battery accessory. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments are only specific elaborations of the present utility model, and their purpose is to enable those skilled in the art to better understand the technical solutions of the present utility model, and should not be regarded as a limitation of the present utility model.

[0038] In the description of the present utility model, it should be noted that when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings. This is 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. Therefore, it should not be construed as a limitation of the present utility model.

[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, when terms such as "installation", "connection", "connection" are used, they 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 an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0040] Embodiment 1

[0041] Refer to Figures 1 to 7 , a waterproof battery sealing ring, comprising:

[0042] A plastic sealing ring body 1, which adopts a double-layer structure, is a conventional structural technical means in the industry to meet the assembly requirements. Specifically, it includes an integrally formed upper large-ring section 11 and a lower small-ring section 12, and there is an inner cavity 1a that communicates with each other between the upper large-ring section 11 and the lower small-ring section 12. Different from the prior art, the following structure is added to the present utility model, specifically:

[0043] A large-diameter deformable sealing gasket 2. A first opening 13 is provided on the outer wall of the upper large-ring section 11. The large-diameter deformable sealing gasket 2 is arranged in the inner cavity 1a and at least partially extends to the outside of the upper large-ring section 11 through the first opening 13. By providing the large-diameter deformable sealing gasket 2, when the sealing ring is integrally installed in the battery housing 7, the large-diameter deformable sealing gasket 2 can abut against the inner wall of the battery housing 7, effectively compensating for the assembly gap between the parts, and thus playing a reliable first waterproof and sealing role.

[0044] The small-diameter deformable sealing gasket 3 has a second opening 14 formed in the outer wall of the lower small-ring section 12. The small-diameter deformable sealing gasket 3 is disposed in the inner cavity 1a and at least partially extends out of the outer side of the small-layer large-ring section through the second opening 14. By providing the small-diameter deformable sealing gasket 3, when the sealing ring is integrally installed in the battery housing 7, the small-diameter deformable sealing gasket 3 can abut against the inner wall of the battery fitting 72 (such as a breather plate or an insulating cover), effectively compensating for the assembly gap between components, thereby playing a reliable secondary waterproof and sealing role.

[0045] The plastic bottom cover 4 is detachably connected to the bottom of the plastic sealing ring body 1 to enclose the inner cavity 1a. The plastic bottom cover 4 can effectively resist the corrosion of the battery liquid, while the large-diameter deformable sealing gasket 2 and the small-diameter deformable sealing gasket 3 generally have poor corrosion resistance. Therefore, by providing the plastic bottom cover 4, the large-diameter deformable sealing gasket 2 and the small-diameter deformable sealing gasket 3 can be wrapped in the inner cavity 1a, preventing the two from coming into long-term and large-area contact with substances such as battery liquid, thereby reducing the probability of being corroded and extending the overall service life.

[0046] Preferably, the plastic sealing ring body 1 and the plastic bottom cover 4 can be made of any one or a mixture of polytetrafluoroethylene (PTFE), polyphenylene sulfide (PPS), polycarbonate (PC), and polyether ether ketone (PEEK) to have transparency and good alkaline corrosion resistance.

[0047] It is worth mentioning that the large-diameter deformable sealing gasket 2 and the small-diameter deformable sealing gasket 3 are made of relatively soft materials, and there is a certain structural gap between the two. During assembly, they are prone to structural instability and improper assembly under pressure. Therefore, to solve the above defects, the solution adopted is: a rigid support frame 5 is provided between the large-diameter deformable sealing gasket 2 and the small-diameter deformable sealing gasket 3, and the space between the large-diameter deformable sealing gasket 2 and the small-diameter deformable sealing gasket 3 is divided into several avoidance cavities 5a by the rigid support frame 5. Further, the rigid support frame 5 is in a cross shape. An upper positioning groove 21 is formed at the lower end of the large-diameter deformable sealing gasket 2, and a lower positioning groove 31 is provided at the upper end of the small-diameter deformable sealing gasket 3. At least a part of the upper end of the rigid support frame 5 is embedded in the upper positioning groove 21, and at least a part of the lower end of the rigid support frame 5 is embedded in the lower positioning groove 31. By providing the rigid support frame 5, a good structural support effect can be respectively exerted on the large-diameter deformable sealing gasket 2 and the small-diameter deformable sealing gasket 3, enabling the two to exist in the inner cavity 1a in a more stable form.

[0048] Optionally, referring to Figure 7, a metal ring-shaped filamentous skeleton 651 is embedded inside both the large-diameter deformable sealing gasket 2 and the small-diameter deformable sealing gasket 3. The setting of the metal ring-shaped filamentous skeleton 651 can further improve the overall morphological stability of the large-diameter deformable sealing gasket 2 and the small-diameter deformable sealing gasket 3.

[0049] Optionally, both the upper large-ring section 11 and the lower small-ring section 12 are in an inverted conical cylinder shape. The inverted conical cylinder structure is adopted to provide a guiding function during production and assembly, enabling it to be assembled into the battery housing 7 more smoothly and quickly.

[0050] Embodiment Two

[0051] Based on the structure of Embodiment One, this embodiment also provides a solution for slight leakage, specifically: Referring to Figure 6 , the avoidance cavity 5a is filled with alkaline battery adsorption particles 53. Preferably, the alkaline battery adsorption particles 53 are sodium bicarbonate particles or activated carbon particles. Once there is a gap between the plastic sealing ring body 1 and the plastic bottom cover 4, resulting in the battery liquid seeping into the inner cavity 1a, at this time, the alkaline battery adsorption particles 53 start to take effect. They can quickly adsorb the seeping alkaline battery liquid 71, preventing the alkaline battery liquid 71 from severely corroding the large-diameter deformable sealing gasket 2 and the small-diameter deformable sealing gasket 3, and solving the problem of slight leakage.

[0052] When there is a large amount of seeping alkaline battery liquid 71, this embodiment also provides a further solution, specifically: A pH test paper 52 is arranged in the avoidance cavity 5a. The pH test paper 52 is attached to the lower end of the large-diameter deformable sealing gasket 2. The alkaline battery adsorption particles 53 are located between the pH test paper 52 and the small-diameter deformable sealing gasket 3, and the plastic sealing ring body 1 is transparent. When the alkaline battery adsorption particles 53 can no longer absorb the seeping alkaline battery liquid 71, the alkaline battery liquid 71 will climb upward and contact the pH test paper 52, so that the pH test paper 52 can change color and show it. The user can directly observe the change of the pH test paper 52 through the transparent plastic sealing ring body 1, and thus timely cancel and dispose of the battery that has leaked a large amount, preventing the battery from further polluting and damaging electronic components.

[0053] Embodiment Three

[0054] Based on the structure of any of the foregoing embodiments, in order to provide the stability of the plastic bottom cover 4, the further preferably structural solution adopted is: Referring to Figures 2 to 3, the plastic bottom cover 4 is provided with a first groove 41, a first magnet 42 is arranged in the first groove 41, and the upper end face of the first magnet 42 is flush with the upper end face of the plastic bottom cover 4; a second groove 32 is provided at the lower end of the small-diameter deformable sealing gasket 3, a second magnet 33 is arranged in the second groove 32, and the upper end face of the second magnet 33 is flush with the lower end face of the small-diameter deformable sealing gasket 3; when the plastic bottom cover 4 approaches the small-diameter deformable sealing gasket 3, a magnetic force is generated between the first magnet 42 and the second magnet 33 to adsorb the plastic bottom cover 4 at the lower end of the small-diameter deformable sealing gasket 3. It is worth mentioning that the flush end face is adopted in the structural setting to prevent the structure from being abrupt, so that there is good fitting and a larger contact surface between relevant components, thereby ensuring the stability of the overall structure.

[0055] Embodiment 4

[0056] Similar to the prior art, the sealing ring of the present utility model also provides an explosion-proof structure. According to its existing physical structure, the specific explosion-proof structure in this embodiment is as follows: Refer to Figure 2 , Figure 5 , the upper end of the plastic sealing ring body 1 has an explosion-proof breakthrough area 15, and the explosion-proof breakthrough area 15 is composed of a plurality of explosion-proof grooves distributed in a ring shape; the large-diameter deformable sealing gasket 2 has a thinning section 22, and the thinning section 22 is opposite to the explosion-proof breakthrough area 15.

[0057] When the inside of the battery is unstable, the internal pressure is applied upward to the thinning section 22 and causes the thinning section 22 to deform, and then the thinning section 22 presses on the explosion-proof breakthrough area 15, causing the explosion-proof breakthrough area 15 to be damaged and cracked, timely relieving the pressure, preventing the battery from exploding and burning, and improving the use safety.

[0058] It should be noted that other technical solutions of the present utility model belong to the prior art, so they will not be elaborated.

[0059] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present utility model, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present utility model.

Claims

1. A waterproof battery sealing ring, characterized in that, It includes: A plastic sealing ring body (1), which includes an integrally formed upper large-ring section (11) and a lower small-ring section (12), and there is an interconnected inner cavity (1a) between the upper large-ring section (11) and the lower small-ring section (12); A large-diameter deformable sealing gasket (2), a first opening (13) is provided on the outer wall of the upper large-ring section (11), and the large-diameter deformable sealing gasket (2) is arranged in the inner cavity (1a) and at least partially extends out of the outer side of the upper large-ring section (11) through the first opening (13); A small-diameter deformable sealing gasket (3), a second opening (14) is provided on the outer wall of the lower small-ring section (12), and the small-diameter deformable sealing gasket (3) is arranged in the inner cavity (1a) and at least partially extends out of the outer side of the small large-ring section through the second opening (14); A plastic bottom cover (4), which is detachably connected to the bottom of the plastic sealing ring body (1) to seal the inner cavity (1a).

2. The waterproof battery sealing ring according to claim 1, characterized in that: A rigid support frame (5) is provided between the large-diameter deformable sealing gasket (2) and the small-diameter deformable sealing gasket (3), and the space between the large-diameter deformable sealing gasket (2) and the small-diameter deformable sealing gasket (3) is divided into several avoidance cavities (5a) by the rigid support frame (5).

3. The waterproof battery sealing ring according to claim 2, wherein: The rigid support frame (5) is in a cross shape, an upper positioning groove (21) is provided at the lower end of the large-diameter deformable sealing gasket (2), a lower positioning groove (31) is provided at the upper end of the small-diameter deformable sealing gasket (3), at least part of the upper end of the rigid support frame (5) is embedded in the upper positioning groove (21), and at least part of the lower end of the rigid support frame (5) is embedded in the lower positioning groove (31).

4. The waterproof battery sealing ring according to claim 2, characterized in that: Alkaline battery adsorption particles (53) are filled in the avoidance cavities (5a).

5. The waterproof battery sealing ring according to claim 4, characterized in that: The alkaline battery adsorption particles (53) are sodium bicarbonate particles or activated carbon particles.

6. The waterproof battery sealing ring according to claim 4, wherein: A pH test paper (52) is arranged in the avoidance cavities (5a), the pH test paper (52) is attached to the lower end of the large-diameter deformable sealing gasket (2), the alkaline battery adsorption particles (53) are located between the pH test paper (52) and the small-diameter deformable sealing gasket (3), and the plastic sealing ring body (1) is transparent.

7. The waterproof battery sealing ring according to claim 1, wherein: Metal ring-shaped filamentous skeletons (6)(51) are embedded inside both the large-diameter deformable sealing gasket (2) and the small-diameter deformable sealing gasket (3).

8. The waterproof battery sealing ring according to claim 1, wherein: Both the upper large-ring section (11) and the lower small-ring section (12) are in an inverted conical cylinder shape.

9. The waterproof battery sealing ring according to claim 1, wherein: The plastic bottom cover (4) is provided with a first groove (41), a first magnet (42) is arranged in the first groove (41), and the upper end face of the first magnet (42) is flush with the upper end face of the plastic bottom cover (4); The lower end of the small-diameter deformable sealing gasket (3) is provided with a second groove (32), a second magnet (33) is arranged in the second groove (32), and the upper end face of the second magnet (33) is flush with the lower end face of the small-diameter deformable sealing gasket (3); When the plastic bottom cover (4) approaches the small-diameter deformable sealing gasket (3), a magnetic force is generated between the first magnet (42) and the second magnet (33) to adsorb the plastic bottom cover (4) at the lower end of the small-diameter deformable sealing gasket (3).

10. The waterproof battery sealing ring according to claim 1, characterized in that: The upper end of the plastic sealing ring body (1) has an explosion-proof breakthrough area (15), and the explosion-proof breakthrough area (15) is composed of a plurality of explosion-proof grooves distributed in a ring shape; The large-diameter deformable sealing gasket (2) has a thinning section (22), and the thinning section (22) is opposite to the explosion-proof breakthrough area (15).

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