Anti-corrosion shell structure and aqueous battery having the same

Abstract

The utility model relates to an anticorrosion shell structure and water system battery with same, including casing, the cover body of cover in the open end of casing and set up on the sealing assembly of casing and cover body mounting surface, the sealing assembly includes sealing ring one and sealing ring two, sealing ring one is along the radial path equidistantly arranged on the mounting surface of casing, sealing ring two is along the radial path equidistantly arranged on the mounting surface of cover body, under the installation condition, sealing ring one and sealing ring two staggered occlusion to form a meandering path, the utility model discloses through the radial equidistant arrangement of sealing ring one and sealing ring two + staggered occlusion design, form meandering penetration path, greatly extend the penetration distance of medium, utilize the principle of length defense fundamentally improves the sealing reliability, breaks through the limitation of traditional single sealing structure.

Description

Technical Field

[0001] This utility model belongs to the field of battery casing technology, and specifically relates to an anti-corrosion casing structure, and an aqueous battery having the anti-corrosion casing structure. Background Technology

[0002] In the field of battery technology, especially for aqueous batteries, the corrosion resistance of the casing directly affects the battery's lifespan and safety. Aqueous batteries use mostly aqueous solutions as their electrolytes, which are volatile and conductive. If the casing is not properly sealed, external air, moisture, and corrosive media in the environment can easily seep into the interior through the gap between the casing and the cover, leading to oxidation and corrosion of internal metal components, and even causing electrolyte leakage and battery performance degradation.

[0003] Currently, most existing battery casings employ a single sealing ring design: a rubber or silicone sealing ring is placed between the mounting surfaces of the casing and the cover, and a seal is achieved by the clamping force between the casing and the cover compressing the sealing ring. However, this structure has significant drawbacks: firstly, the sealing path of a single sealing ring is short and linear, allowing external media to penetrate even through a tiny gap, resulting in low sealing reliability; secondly, the installation of the sealing ring depends on the precise alignment of the casing and the cover. If radial misalignment occurs during installation, it can easily lead to uneven stress on the sealing ring, creating sealing blind spots and further reducing corrosion resistance. Utility Model Content

[0004] This utility model addresses the problems of existing technologies by providing a corrosion-resistant shell structure and an aqueous battery incorporating it. The specific technical solution is as follows:

[0005] The corrosion-resistant housing structure includes a housing, a cover that fits over the opening of the housing, and a sealing assembly disposed on the mounting surfaces of the housing and the cover;

[0006] The sealing assembly includes a first sealing ring and a second sealing ring. The first sealing ring is evenly spaced along a radial path on the mounting surface of the housing, and the second sealing ring is evenly spaced along a radial path on the mounting surface of the cover. In the installed state, the first sealing ring and the second sealing ring interlock to form a meandering path.

[0007] As a further technical solution of this utility model, the diameter of the sealing ring 1 decreases as it extends from the shell to the cover, and a flared structure matching the sealing ring 2 is formed between two adjacent sealing ring 1s. The diameter of the sealing ring 2 decreases as it extends from the cover to the shell, and a flared structure matching the sealing ring 1 is formed between two adjacent sealing ring 2s.

[0008] As a further technical solution of this utility model, both the sealing ring one and the sealing ring two include a support body and a deformable part wrapped around the support body. In the installed state, adjacent support bodies and deformable parts are squeezed against each other and deformed.

[0009] As a further technical solution of this utility model, the deformable part is made of rubber.

[0010] Aqueous batteries, including the aforementioned corrosion-resistant casing structure.

[0011] The beneficial effects of this utility model are as follows:

[0012] (1) By using the “radial equal spacing + staggered interlocking” design of sealing ring one and sealing ring two, a meandering permeation path is formed, which greatly extends the permeation distance of the medium. The “length defense” principle is used to fundamentally improve the sealing reliability and break through the limitations of the traditional single sealing structure.

[0013] (2) The radially evenly spaced arrangement of the sealing rings and the staggered interlocking structure form a "dynamic adaptation" mechanism. Even if there is a slight deviation during installation, the staggered rings can still fill the gaps by interlocking with each other, which solves the problem of the traditional sealing structure having too high requirements for installation accuracy and realizes "fault-tolerant sealing".

[0014] (3) By combining “physical barrier” and “structural adaptation” through the staggered design of sealing rings, a dual sealing logic of “path defense + structural self-compensation” is formed, which is an innovative application of sealing principle. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of the corrosion-resistant outer shell is shown;

[0016] Figure 2 An exploded structural diagram of the corrosion-resistant outer shell structure is shown;

[0017] Figure 3 A schematic diagram of the internal structure of the corrosion-resistant outer shell is shown;

[0018] Figure 4 It shows Figure 3 Enlarged structural diagram at point A in the middle;

[0019] Figure 5 A schematic diagram of the support and the deformable part is shown.

[0020] Legend:

[0021] 100. Shell; 200. Cover; 300. Sealing assembly; 310. Sealing ring one; 320. Sealing ring two; 330. Support body; 340. Deformable part. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0023] Figure 1 A schematic diagram of the overall structure of the corrosion-resistant outer shell is shown; Figure 2 An exploded structural diagram of the corrosion-resistant outer shell structure is shown; Figure 3 A schematic diagram of the internal structure of the corrosion-resistant outer shell is shown;

[0024] Figure 4 It shows Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 A structural schematic diagram of the support 330 and the deformable part 340 is shown.

[0025] Figures 1-3 The corrosion-resistant housing structure includes a housing 100, a cover 200 that fits over the opening of the housing 100, and a sealing assembly 300 disposed on the mounting surfaces of the housing 100 and the cover 200. After the housing 100 and the cover 200 are installed, the sealing assembly 300 fills the gap between their mounting surfaces, physically blocking external air and moisture from contacting the interior of the housing 100. By placing the sealing assembly 300 at the mounting surface, comprehensive protection of the interior space of the housing 100 is achieved, reducing corrosion of the housing 100 and internal components caused by the intrusion of external corrosive media, and extending the service life of the housing and the internal battery. Simultaneously, the fitting structure of the cover 200 with the housing 100, in conjunction with the sealing assembly 300, ensures the structural integrity of the housing while simplifying the installation process.

[0026] Figure 4 In the process, the sealing assembly 300 includes a first sealing ring 310 and a second sealing ring 320. The first sealing ring 310 is evenly distributed along a radial path on the mounting surface of the housing 100, and the second sealing ring 320 is evenly distributed along a radial path on the mounting surface of the cover 200. In the installed state, the first sealing ring 310 and the second sealing ring 320 interlock to form a meandering path.

[0027] The interlocking, meandering path significantly increases the penetration path of external media. When the media attempts to seep in through the gap between the shell 100 and the cover 200, it must travel along the meandering path. During this process, the penetration force of the media gradually decreases. Compared to a single sealing structure, the meandering path improves sealing reliability through "length defense," making it difficult for the media to penetrate quickly even if small gaps appear locally. The evenly spaced structural design ensures that the sealing rings are subjected to uniform force, avoiding seal failure due to excessive local pressure.

[0028] See also Figure 4 As the sealing ring 310 extends from the housing 100 to the cover 200, its diameter decreases. A flared structure of a matching sealing ring 320 is formed between two adjacent sealing rings 310. As the sealing ring 320 extends from the cover 200 to the housing 100, its diameter decreases. A flared structure of a matching sealing ring 310 is formed between two adjacent sealing rings 320.

[0029] The decreasing diameter design creates a wedge-shaped structure in the extension direction of the sealing rings. Combined with the flared structure, this allows for guided engagement between sealing ring 310 and sealing ring 320 during installation—that is, sealing ring 320 naturally slides into the flared opening of sealing ring 310, and vice versa, reducing alignment errors during installation. Simultaneously, the wedge-shaped structure generates a radial force under pressure, resulting in a tighter fit between the sealing rings, reducing installation difficulty and improving assembly efficiency. The matching structure of the flared opening and wedge shape adapts to installation deviations, ensuring full contact of the sealing rings. The decreasing diameter design increases the structural strength of the sealing ring root, preventing deformation or breakage due to long-term pressure.

[0030] Figure 5 In the middle, both sealing ring one 310 and sealing ring two 320 include a support body 330 and a deformable part 340 wrapped around the support body 330. In the installed state, the adjacent support bodies 330 and deformable parts 340 are squeezed against each other and deformed. The deformable part 340 is made of rubber.

[0031] The support body 330 acts as a rigid frame, providing structural support for the sealing rings and preventing excessive deformation due to external forces during installation or long-term use. The deformable part 340, made of rubber, utilizes its elastic properties to deform during installation and compression, filling the tiny gaps between the sealing rings to achieve a tight fit. Simultaneously, the static friction of the rubber enhances the interlocking stability between the sealing rings, preventing relative displacement caused by vibration, temperature changes, etc. The combination of the support body and the deformable part achieves a synergistic effect of "rigid support + elastic sealing," balancing structural stability and sealing flexibility. The deformation capacity of the rubber deformable part can adapt to dimensional changes under different working conditions, extending the seal life. The presence of static friction further enhances the anti-interference capability of the sealing structure, reducing the risk of seal failure due to external impacts.

[0032] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An erosion shield structure, characterized by: It includes a housing (100), a cover (200) that covers the open end of the housing (100), and a sealing assembly (300) disposed on the mounting surfaces of the housing (100) and the cover (200); The sealing assembly (300) includes a first sealing ring (310) and a second sealing ring (320). The first sealing ring (310) is evenly spaced along a radial path on the mounting surface of the housing (100), and the second sealing ring (320) is evenly spaced along a radial path on the mounting surface of the cover (200). In the installed state, the first sealing ring (310) and the second sealing ring (320) interlock to form a meandering path.

2. The corrosion-proof enclosure structure according to claim 1, characterized by: As the sealing ring 1 (310) extends from the housing (100) toward the cover (200), its diameter decreases. An flared structure matching the sealing ring 2 (320) is formed between two adjacent sealing ring 1 (310). As the sealing ring 2 (320) extends from the cover (200) toward the housing (100), its diameter decreases. An flared structure matching the sealing ring 1 (310) is formed between two adjacent sealing ring 2 (320).

3. The corrosion-proof enclosure structure according to claim 2, characterized by: Both the sealing ring one (310) and the sealing ring two (320) include a support body (330) and a deformable part (340) wrapped around the support body (330). In the installed state, the adjacent support bodies (330) and deformable parts (340) are squeezed against each other and deformed.

4. The corrosion-proof enclosure structure according to claim 3, characterized by: The deformable part (340) is made of rubber.

5. A water-based battery, characterized by: Includes the corrosion-resistant housing structure as described in any one of claims 1-4.

Images