A waterproof blow-molded case battery

Abstract

The utility model relates to battery shell manufacturing technical field discloses a waterproof blow molding shell battery, including support protection shell, the inside fixed connection of support protection shell has multilayer waterproof mechanism, the inside fixed connection of support protection shell has drainage mechanism, multilayer waterproof mechanism includes the double -groove sealing ring subassembly for sealing, the outside fixed connection of double -groove sealing ring subassembly is at the outside of support protection shell, the outside fixed connection of double -groove sealing ring subassembly has insulating waterproof membrane, the outside fixed connection of insulating waterproof membrane has waterproof buffer layer, the outside fixed connection of waterproof buffer layer has connection support layer. In the utility model, the convex rib of double -groove sealing ring subassembly is matched with the recess, forms double -sealed, and waterproof coating forms waterproof membrane in the inside of shell, and the sealing of double -groove sealing ring is strengthened with the aid of silicone rubber sealing ring, and the dryness of battery is collectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of battery casing manufacturing technology, and in particular to a waterproof blow-molded battery casing. Background Technology

[0002] With the rapid development of technology, batteries, as the core energy source for various devices, are finding increasingly diverse applications. From portable outdoor electronic devices and underwater detection instruments to new energy vehicles and outdoor energy storage systems, stringent requirements are placed on the waterproof performance of batteries. Traditional battery casing waterproof designs are relatively simple, often employing basic sealing strips or coatings. In complex environments, such as high humidity, frequent vibration, and mechanical impact scenarios, these designs are insufficient to effectively prevent moisture intrusion, easily leading to problems such as seal failure, battery short circuits, performance degradation, and even safety accidents. When water accidentally accumulates inside the battery, the lack of an effective drainage mechanism results in the battery components being submerged for extended periods, significantly shortening their lifespan. Against this backdrop, developing blow-molded casing batteries with multi-layer waterproofing and intelligent drainage functions has become a key direction for improving battery reliability and safety and meeting diverse application needs.

[0003] A search revealed Chinese patent publication number CN218452589U, which discloses a waterproof lithium battery pack casing. The casing includes a battery pack housing with a front cover at its front end. An inner cavity of the battery pack housing contains a waterproof membrane casing, which includes a waterproof membrane and a front cover. The bottom of the front cover has symmetrically arranged protrusions on both sides along the front-back direction. The top of the waterproof membrane has a recess corresponding to the protrusions. A knob is located at the front of the top of the battery pack housing. One end of the knob has a rotating shaft, and the other end extends into the inner wall of the top of the battery pack housing, where a turntable is located. The front half of the turntable extends out of the front of the battery pack housing, and the top surface of the turntable has an insertion port. This waterproof lithium battery pack housing provides waterproof protection by placing the battery pack inside the waterproof membrane casing. The front cover can be opened by sliding a rectangular block upwards, making it simpler to open and easier to close compared to traditional screw installations.

[0004] The aforementioned patent mentions that "the waterproof lithium battery pack casing provides waterproof protection by placing the battery pack inside the waterproof casing; the front cover can be opened by sliding the rectangular block upwards to disengage the insertion block from the insertion port. Compared to traditional screw installation, it is simple to open, convenient to close, and highly practical." However, in actual use, when the waterproof casing corrodes over time, its waterproof effect weakens, leading to battery failure or malfunction. Therefore, to address the above-mentioned problems, a waterproof blow-molded casing battery is proposed to solve these issues. Utility Model Content

[0005] This utility model proposes a waterproof blow-molded battery casing, which aims to improve the problem of poor waterproof performance of some devices and battery components in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A waterproof blow-molded battery includes a supporting protective shell. A multi-layer waterproof mechanism is fixedly connected to the inner side of the supporting protective shell. A drainage mechanism is fixedly connected inside the supporting protective shell. The multi-layer waterproof mechanism includes a double-groove sealing ring assembly for sealing. The double-groove sealing ring assembly is fixedly connected to the outside of the supporting protective shell. An insulating waterproof membrane is fixedly connected to the outside of the double-groove sealing ring assembly. A waterproof buffer layer is fixedly connected to the outside of the insulating waterproof membrane. A connecting support layer is fixedly connected to the outside of the waterproof buffer layer. A wear-resistant waterproof protective layer is fixedly connected to the outside of the connecting support layer. A waterproof coating is fixedly connected to the outside of the wear-resistant waterproof protective layer.

[0007] The above solution comprises a protective outer shell, a multi-layer waterproof mechanism, and a drainage mechanism. The multi-layer waterproof mechanism features a double-groove sealing ring assembly for sealing, an insulating waterproof membrane that combines insulation and waterproofing, a waterproof buffer layer to cushion impacts, a connecting support layer to provide structural support, a wear-resistant waterproof protective layer to resist wear, a waterproof coating to enhance waterproofing, and a drainage mechanism to drain internal water. This multi-layered protection effectively prevents moisture intrusion, ensuring stable battery operation in humid environments. The buffer and wear-resistant layers reduce external impacts and friction damage, the drainage mechanism prevents water accumulation from damaging the battery, and the protective outer shell provides stable support, extending battery life and reducing operating costs.

[0008] As a further description of the above technical solution: The drainage mechanism includes a threaded post, and a sealing rubber ring is fixedly connected to the outside of the threaded post. A nut is fixedly connected to the outside of the sealing rubber ring, i.e., the end away from the threaded post.

[0009] The above solution consists of a threaded post, a sealing rubber ring, and a nut. The threaded post connects the drain hole to the nut, enabling the drain hole to open and close. The sealing rubber ring enhances the sealing of the drain hole. The nut and the threaded post work together to fix and tighten the drain, allowing water to drain out of the battery in a timely manner, ensuring internal dryness, preventing malfunctions caused by water accumulation, and ensuring the safe and stable operation of the battery.

[0010] As a further description of the above technical solution: The waterproof coating is externally fixedly connected to the inner side of the supporting protective shell, and the wear-resistant and waterproof protective layer is externally fixedly connected to the outer side of the supporting protective shell.

[0011] Through the above solution, the waterproof coating is fixed to the inner side of the supporting protective shell to form a dense waterproof membrane, and the wear-resistant and waterproof protective layer is attached to the outer side of the shell to resist friction and impact, providing waterproof and physical protection for the battery and ensuring stable operation of the battery in complex environments.

[0012] As a further description of the above technical solution: A silicone rubber sealing ring is fixedly connected to the outside of the insulating waterproof membrane, i.e., the side away from the waterproof buffer layer, and the double groove sealing ring assembly includes a groove.

[0013] With the above solution, the insulating waterproof membrane is connected to the silicone rubber sealing ring on the side away from the buffer layer, which enhances the battery's sealing and protection. The double groove sealing ring assembly includes a groove and is fixed between the supporting protective shell and the silicone rubber sealing ring.

[0014] As a further description of the above technical solution: The groove is fixedly connected to the outside of the supporting protective shell, and the groove is fixedly connected to the outside of the silicone rubber sealing ring.

[0015] Through the above solution, the groove is tightly connected to the silicone rubber sealing ring, and the ribs on the silicone rubber sealing ring can be embedded in the groove to form a double sealing structure, which effectively prevents external moisture from entering the battery. Together with other waterproof components, it provides a reliable waterproof protection barrier for the battery.

[0016] As a further description of the above technical solution: A raised rib is fixedly connected to the outside of the silicone rubber sealing ring, i.e., the side away from the groove, and the outside of the raised rib is slidably connected to the outside of the groove.

[0017] With the above solution, the silicone rubber sealing ring has a raised rib on the side away from the groove. The raised rib can slide outside the groove. The two work together, and the raised rib can be embedded into the groove during installation to form a tight double sealing structure, which effectively prevents moisture penetration and ensures the normal use of the battery in various environments.

[0018] As a further description of the above technical solution: The outer side of the protective housing is provided with a drainage hole, and the outer side of the threaded column is slidably connected to the inner side of the drainage hole.

[0019] The above solution provides a drainage hole on the outside of the protective shell. The threaded post can slide inside the drainage hole. By operating the threaded post, the drainage hole can be opened and closed. When water accumulates inside the battery, opening the drainage hole can drain the water and keep the battery dry. When closed, it prevents external water from entering. Together with other waterproof components, it maintains the battery in good working condition.

[0020] As a further description of the above technical solution: The drain hole is externally threaded with a sealing rubber ring, and the nut is externally slidably connected to the outside of the drain hole.

[0021] With the above solution, a sealing rubber ring is slidably connected to the outside of the drain hole, and the nut is also slidably connected to the outside of the drain hole. When the nut and the threaded post are tightened together, the sealing rubber ring is squeezed and deformed, tightly filling the gap of the drain hole and enhancing the sealing effect. When water accumulates inside the battery, the nut is loosened and the threaded post is unscrewed to open the drain hole for drainage. The three work together to achieve the switching between drainage and sealing functions, ensuring the waterproof performance of the battery.

[0022] This utility model has the following beneficial effects: 1. In this utility model, the supporting protective shell provides basic support for the battery, the components of the multi-layer waterproof mechanism work together, the convex ribs and grooves of the double groove sealing ring assembly cooperate to form a double seal, the insulating waterproof membrane ensures electrical safety, the waterproof buffer layer buffers impact, the connecting support layer enhances structural strength, the wear-resistant waterproof protective layer resists wear and waterproofing, the waterproof coating forms a waterproof membrane on the inside of the shell, and the silicone rubber sealing ring assists the double groove sealing ring to strengthen the seal, all working together to ensure the battery stays dry.

[0023] 2. In this utility model, the threaded post, the drain hole and the nut work together to achieve drainage control. Under normal conditions, the nut tightens the threaded post, the sealing rubber ring deforms and fills the gap, enhances the sealing of the drain hole, and prevents external water from entering. When drainage is required, the nut is loosened and the threaded post is unscrewed to open the drainage channel. The water is discharged by gravity. After drainage, the threaded post is screwed back in and the nut is tightened to restore the seal. Attached Figure Description

[0024] Figure 1 This is a perspective view of a reversible assembled alkaline battery module proposed in this utility model. Figure 2 This is a schematic diagram of the multi-layer waterproof mechanism of a reversible assembled alkaline battery module proposed in this utility model. Figure 3 This is a schematic diagram of the structure of the supporting and protective shell for a reversible assembled alkaline battery module proposed in this utility model. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of section B in the middle.

[0025] Legend: 1. Supporting and protective outer shell; 2. Multi-layer waterproof mechanism; 201. Double groove sealing ring assembly; 20101. Groove; 20102. Rib; 202. Waterproof coating; 203. Wear-resistant and waterproof protective layer; 204. Connecting support layer; 205. Waterproof buffer layer; 206. Insulating waterproof membrane; 207. Silicone rubber sealing ring; 3. Drainage mechanism; 301. Threaded post; 302. Nut; 303. Sealing rubber ring; 304. Drain hole. Detailed Implementation

[0026] 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.

[0027] Reference Figure 1 , Figure 2 and Figure 5 This utility model provides an embodiment of a waterproof blow-molded battery, including a supporting protective shell 1. A multi-layer waterproof mechanism 2 is fixedly connected to the inner side of the supporting protective shell 1, and a drainage mechanism 3 is fixedly connected inside the supporting protective shell 1. The multi-layer waterproof mechanism 2 includes a double-groove sealing ring assembly 201 for sealing. The double-groove sealing ring assembly 201 is a key barrier for battery waterproofing, mainly used to prevent external moisture from entering the battery. The double-groove sealing ring assembly 201 is fixedly connected to the outside of the supporting protective shell 1. An insulating waterproof membrane 206 is fixedly connected to the outside of the double-groove sealing ring assembly 201. The insulating waterproof membrane 206 has both insulation and waterproof functions. A waterproof buffer layer 205 is fixedly connected to the outside of the insulating waterproof membrane 206. The waterproof buffer layer 205 is mainly used to buffer the impact force of the outside on the battery shell and reduce the damage to the internal structure of the battery caused by collisions, vibrations and other factors. A connecting support layer 204 is fixedly connected to the outside of the waterproof buffer layer 205. The connecting support layer 204 plays a dual role of connection and support, and can provide a certain structural strength for the entire multi-layer waterproof mechanism. A wear-resistant and waterproof protective layer 203 is fixedly connected to the outside of the connecting support layer 204. The wear-resistant and waterproof protective layer 203 is located on the outside of the multi-layer waterproof mechanism and mainly plays a dual protection role. A waterproof coating 202 is fixedly connected to the outside of the wear-resistant and waterproof protective layer 203. A silicone rubber sealing ring 207 is fixedly connected to the outside of the insulating waterproof membrane 206, that is, on the side away from the waterproof buffer layer 205. The silicone rubber sealing ring 207 works in conjunction with the double groove sealing ring assembly 201 to further enhance the sealing effect of the battery casing. The double groove sealing ring assembly 201 includes a groove 20101. The external fixed connection of 20101 is to the outside of the supporting protective shell 1. The external fixed connection of the groove 20101 is to the outside of the silicone rubber sealing ring 207. The external side of the silicone rubber sealing ring 207, that is, the side away from the groove 20101, is fixedly connected to the protruding rib 20102. The external rib 20102 is slidably connected to the outside of the groove 20101. The external rib 20102 can be tightly embedded in the groove 20101 to form a double sealing structure. This tight fit effectively prevents moisture penetration, maintains good sealing performance, and ensures the waterproof reliability of the battery.

[0028] Specifically, in the design of the waterproof blow-molded battery, the supporting protective shell 1 serves as the basic frame. The multi-layer waterproof mechanism 2 on its inner side and the internal drainage mechanism 3 complement each other to jointly construct an efficient waterproof protection system. Each component of the multi-layer waterproof mechanism 2 is designed with unique structural features and material properties to prevent water from entering from different angles. The drainage mechanism 3 provides an effective way to drain water when it enters the battery, ensuring that the battery is always in a dry and safe working environment.

[0029] Reference Figures 1 to 3 The drainage mechanism 3 includes a threaded post 301, which is the core component of the drainage mechanism 3. It is used to connect the drainage hole 304 and the nut 302 to realize the opening and closing function of the drainage hole 304. A sealing rubber ring 303 is fixedly connected to the outside of the threaded post 301. The sealing rubber ring 303 is mainly used to enhance the sealing performance of the drainage hole 304. The nut 302 is fixedly connected to the outside of the sealing rubber ring 303, that is, the end away from the threaded post 301. The nut 302 works with the threaded post 301 to fix and tighten it. The drainage hole 304 is opened on the outside of the protective shell 1. When water accumulates inside the battery, the water can be smoothly discharged to the outside of the battery by opening the drainage hole 304, thereby maintaining a dry environment inside the battery and avoiding the battery performance degradation or failure caused by water accumulation. The outside of the threaded post 301 is slidably connected to the inside of the drainage hole 304. The outside of the drainage hole 304 is threadedly connected to the sealing rubber ring 303. The outside of the nut 302 is slidably connected to the outside of the drainage hole 304.

[0030] Specifically, when moisture appears inside the battery due to various reasons (such as accidental immersion in water, condensation caused by ambient humidity, etc.), the drainage mechanism 3 can drain the water quickly. The threaded column 301 can open the drainage hole 304 with a simple rotation operation, and the water inside the battery can be discharged quickly. The drainage process can reduce the humidity inside the battery in a short time, avoid the continuous corrosion of the battery's positive and negative terminals, circuit boards and other core components by moisture, effectively prevent problems such as battery short circuit, power loss and performance degradation caused by moisture, ensure that the battery always maintains a stable working state and output performance, and ensure the normal operation of electrical equipment.

[0031] Working principle: The supporting protective shell 1 provides basic support. In the multi-layer waterproof mechanism 2, the ribs 20102 of the double groove sealing ring assembly 201 are embedded in the grooves 20101 to form a double seal and prevent moisture from entering. The insulating waterproof membrane 206 is both insulating and waterproof, ensuring the electrical safety of the battery. The waterproof buffer layer 205 buffers external impacts and protects the internal structure. The connecting support layer 204 connects and supports each layer, enhancing the structural strength. The wear-resistant and waterproof protective layer 203 resists friction and collision while being waterproof. The waterproof coating 202 forms a waterproof film on the inside of the shell. The silicone rubber sealing ring 207 cooperates with the double groove sealing ring assembly 201 to strengthen the seal and ensure the dryness of the battery.

[0032] The threaded post 301 works in conjunction with the drain hole 304 and the nut 302 to control drainage. Under normal circumstances, the nut 302 tightens the threaded post 301 at the drain hole 304, and the sealing rubber ring 303 is compressed and deformed to tightly fill the gap, enhancing the sealing performance of the drain hole 304 and preventing external moisture from entering the battery. Loosen the nut 302 and rotate the threaded post 301 to screw it out of the drain hole 304, opening the drainage channel. The moisture in the battery is discharged through the drain hole 304 under the action of gravity. After drainage is completed, rotate the threaded post 301 in the opposite direction to screw it back into the drain hole 304, and then tighten the nut 302 to restore the sealing state and prevent the battery from getting damp and affecting its performance.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waterproof blow-molded enclosure battery comprising a supporting protective enclosure (1), characterized in that: The inner side of the supporting protective shell (1) is fixedly connected to a multi-layer waterproof mechanism (2), and the inside of the supporting protective shell (1) is fixedly connected to a drainage mechanism (3). The multi-layer waterproof mechanism (2) includes a double-groove sealing ring assembly (201) for sealing. The double-groove sealing ring assembly (201) is externally fixedly connected to the outside of the supporting protective shell (1). An insulating waterproof membrane (206) is fixedly connected to the outside of the double-groove sealing ring assembly (201). A waterproof buffer layer (205) is fixedly connected to the outside of the insulating waterproof membrane (206). A connecting support layer (204) is fixedly connected to the outside of the waterproof buffer layer (205). A wear-resistant waterproof protective layer (203) is fixedly connected to the outside of the connecting support layer (204). A waterproof coating (202) is fixedly connected to the outside of the wear-resistant waterproof protective layer (203).

2. A waterproof blow-molded case battery according to claim 1, characterized by: The drainage mechanism (3) includes a threaded post (301), a sealing rubber ring (303) is fixedly connected to the outside of the threaded post (301), and a nut (302) is fixedly connected to the outside of the sealing rubber ring (303), that is, the end away from the threaded post (301).

3. A waterproof blow-molded case battery according to claim 1, characterized by: The waterproof coating (202) is externally fixedly connected to the inner side of the supporting protective shell (1), and the wear-resistant waterproof protective layer (203) is externally fixedly connected to the outer side of the supporting protective shell (1).

4. A waterproof blow-molded case battery according to claim 3, characterized by: A silicone rubber sealing ring (207) is fixedly connected to the outside of the insulating waterproof membrane (206), i.e. the side away from the waterproof buffer layer (205), and the double groove sealing ring assembly (201) includes a groove (20101).

5. A waterproof blow-molded case battery according to claim 4, characterized by: The groove (20101) is fixedly connected to the outside of the supporting protective shell (1), and the groove (20101) is fixedly connected to the outside of the silicone rubber sealing ring (207).

6. A waterproof blow-molded case battery according to claim 5, wherein: A rib (20102) is fixedly connected to the outside of the silicone rubber sealing ring (207), i.e. the side away from the groove (20101), and the outside of the rib (20102) is slidably connected to the outside of the groove (20101).

7. A waterproof blow-molded case battery according to claim 2, wherein: The outer side of the supporting protective shell (1) is provided with a drainage hole (304), and the outer side of the threaded column (301) is slidably connected to the inner side of the drainage hole (304).

8. A waterproof blow-molded case battery according to claim 7, characterized by: The drain hole (304) is externally threaded with a sealing rubber ring (303), and the nut (302) is externally slidably connected to the outside of the drain hole (304).

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