A high-sealing supercapacitor with double-layer rubber stoppers

Abstract

This utility model discloses a high-sealing supercapacitor with double-layer rubber stoppers, relating to the field of capacitor technology. The key technical points are: it includes an aluminum shell, with a first rubber stopper and a second rubber stopper disposed at the top opening of the aluminum shell; a sealing element is formed between the first and second rubber stoppers by applying adhesive; an abutment block is integrally formed on the top of the first rubber stopper and abuts against the bottom of the second rubber stopper, forming a cavity to accommodate the sealing element. The purpose of this utility model is to provide a high-sealing supercapacitor with double-layer rubber stoppers.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and more specifically, to a high-sealing supercapacitor with a double-layer rubber stopper. Background Technology

[0002] Capacitors are among the most widely used electronic components in electronic devices, and are extensively applied in circuits for DC blocking and AC passing, coupling, bypassing, filtering, tuning circuits, energy conversion, and control. With the rapid development of electronic information technology and the increasingly fast pace of digital electronic product upgrades, the production and sales of consumer electronics, primarily flat-screen TVs, laptops, and digital cameras, have continued to grow, driving the growth of the capacitor industry.

[0003] Existing capacitors typically have a sealing plug on the top of the aluminum casing during the manufacturing process to seal the casing. However, in actual use, electrolyte may seep through the aluminum stem of the lead pin, increasing the likelihood of leakage.

[0004] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a supercapacitor with high sealing performance and double-layer rubber stopper.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-sealing supercapacitor with double-layer rubber plugs, including an aluminum shell, wherein a first rubber plug and a second rubber plug are provided at the top opening of the aluminum shell, a sealing element is provided between the first rubber plug and the second rubber plug, and an abutting block is integrally formed on the top of the first rubber plug and abuts against the bottom of the second rubber plug to form a cavity for accommodating the sealing element.

[0007] The present invention is further configured such that: the material of the sealing element is one of epoxy resin, polyurethane, UV adhesive, and silicone; and the materials of the first rubber stopper and the second rubber stopper are one of EPDM rubber, silicone, butyl rubber, and fluororubber.

[0008] The present invention is further configured such that: the first rubber stopper and the second rubber stopper have two through grooves for the guide needle to pass through, and two abutment blocks are provided and located on both sides of the through grooves.

[0009] The present invention is further configured such that the two abutting blocks are specifically symmetrically arranged arc-shaped blocks, and their peripheral arcs are located within concentric circles on the surface of the first rubber stopper.

[0010] The present invention is further configured such that: a barrier element is provided on the surface of the first rubber stopper, the barrier element including a water-absorbing layer and a water-repellent layer, the water-absorbing layer and the water-repellent layer having a through groove for the guide needle to pass through and an arc-shaped groove for the abutment block to pass through.

[0011] The present invention is further configured such that the water-absorbing layer is specifically a porous polymer impregnated with a desiccant.

[0012] The present invention is further configured such that: the waterproof layer is an aluminum-plastic composite film, and its edge is sealed to the surface of the first plug by hot melt adhesive.

[0013] The present invention is further configured such that the water-absorbing layer and the water-resistant layer are pressed together to form a composite film structure.

[0014] The present invention is further configured such that: the bottom of the second rubber plug is provided with a positioning groove for inserting the abutment block, the height of which is less than the height of the abutment block.

[0015] The present invention is further configured such that: both the first rubber stopper and the second rubber stopper are provided with annular grooves on their circumferences, and the aluminum shell is recessed inward to form a waist groove that is embedded in and abuts against the annular grooves.

[0016] This invention has the following advantages: By setting a first rubber stopper and a second rubber stopper to form two sealing defenses, the risk of failure due to aging, defects, or poor contact between a single rubber stopper and the guide pin / aluminum shell is greatly reduced. Furthermore, a seal is formed between the first and second rubber stoppers by potting glue, which can perfectly fill the space between the first and second rubber stoppers, further improving the sealing effect and effectively preventing electrolyte from seeping along the surface of the guide pin. During the processing, a cavity can be pre-formed between the first and second rubber stoppers by using an abutment block, ensuring accurate glue placement, controllable glue amount, and stable shape, thus guaranteeing the reliability of the seal. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a half-section structure in this embodiment; Figure 2 This is a schematic diagram of the exploded structure of the first and second rubber stoppers in this embodiment; Figure 3 This is a cross-sectional structural diagram of the barrier component in this embodiment; Figure 4 This is a schematic diagram of the structure of the bottom of the second rubber stopper in this embodiment.

[0018] Figure descriptions: 1. Aluminum shell; 2. First rubber stopper; 3. Second rubber stopper; 4. Abutment block; 5. Barrier component; 6. Water-absorbing layer; 7. Water-proof layer; 8. Positioning groove; 9. Annular groove; 10. Waist groove. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0021] As shown in the figure, a high-sealing supercapacitor with double-layer rubber stoppers includes an aluminum shell 1. A first rubber stopper 2 and a second rubber stopper 3 are provided at the top opening of the aluminum shell 1. A sealing element (not shown in the figure) is formed between the first rubber stopper 2 and the second rubber stopper 3 by filling with glue. An abutting block 4 is integrally formed on the top of the first rubber stopper 2 and abuts against the bottom of the second rubber stopper 3 to form a cavity for accommodating the sealing element.

[0022] By setting up two sealing lines with the first rubber stopper 2 and the second rubber stopper 3, the risk of failure due to aging, defects, or poor contact between a single rubber stopper and the guide pin / aluminum shell 1 is greatly reduced. A seal is formed between the first rubber stopper 2 and the second rubber stopper 3 by potting glue, which can perfectly fill the space between the first rubber stopper 2 and the second rubber stopper 3, further improving the sealing effect and effectively preventing electrolyte from creeping (alkali creep) along the surface of the guide pin. During the processing, the cavity between the first rubber stopper 2 and the second rubber stopper 3 can be pre-formed by the abutment block 4, ensuring accurate glue filling position, controllable glue amount, and stable shape, thus ensuring the reliability of the seal.

[0023] The sealing material is one of epoxy resin, polyurethane, UV adhesive, or silicone, which gives it good fluidity, wettability, and shape stability after curing. It can perfectly fill the cavity formed by the abutment block between the first and second rubber plugs, forming a continuous, dense, and non-porous solid sealing barrier. The first rubber stopper 2 and the second rubber stopper 3 are made of one of the following materials: EPDM rubber, silicone rubber, butyl rubber, and fluororubber, which gives them good compression deformation recovery ability. After the first rubber stopper and the second rubber stopper are pressed into the aluminum shell port, they can fit tightly against the inner wall of the aluminum shell to form a static seal, effectively preventing electrolyte leakage from the interface between the aluminum shell and the rubber stopper.

[0024] Both the first rubber plug 2 and the second rubber plug 3 have annular grooves 9 on their circumferences. The aluminum shell 1 is recessed inward to form two waist grooves 10 that are embedded in and abut against the annular grooves 9, thereby improving the sealing between the first rubber plug 2, the second rubber plug 3 and the aluminum shell 1.

[0025] The first rubber stopper 2 and the second rubber stopper 3 have two through grooves for the guide needle to pass through. Two abutment blocks 4 are provided and located on both sides of the through grooves. Specifically, the two abutment blocks 4 are symmetrically arranged arc-shaped blocks, and their peripheral arcs are located within the concentric circles on the surface of the first rubber stopper.

[0026] By using two symmetrically arranged arc-shaped blocks, the cavity is provided with stable and effective support while avoiding interference with the position and performance of the guide pin, thus ensuring the stability and compactness of the product.

[0027] The surface of the first rubber stopper is also provided with a barrier element 5, which includes a water-absorbing layer 6 and a water-repellent layer 7. The water-absorbing layer 6 and the water-repellent layer 7 have through grooves for the guide needle to pass through and arc-shaped grooves for the abutment block 4 to pass through. Through the water-absorbing layer 6 and the water-repellent layer 7, not only can external moisture be prevented from entering, but the electrolyte that may evaporate or leak out can also be effectively absorbed, thereby further improving the service life of the product.

[0028] The absorbent layer 6 is specifically a porous polymer impregnated with a desiccant, such as non-woven fabric or porous PET film, which can quickly and efficiently absorb moisture and electrolyte. Non-woven fabric and porous PET film are common industrial materials with controllable costs, easy processing, and stable chemical properties.

[0029] The water-proof layer 7 is an aluminum-plastic composite film, such as a CPP / AL / PA structure, or a metallized polymer film, such as aluminized PET. Its edges are sealed to the surface of the first rubber stopper 2 by hot melt adhesive, which can effectively block moisture and oxygen. Its edges are sealed to the first rubber stopper 2 by hot melt adhesive to ensure the sealing effect of its edges.

[0030] The water-absorbing layer 6 and the water-proof layer 7 are pressed together to form a composite film structure, which simplifies the assembly process, improves production efficiency, and prevents misalignment or separation between the two layers, thus ensuring the integrity and long-term reliability of the layer structure.

[0031] The bottom of the second rubber stopper 3 is provided with a positioning groove 8 for the insertion of the abutment block 4. Its height is less than that of the abutment block 4. During the assembly process, it can play a role in quick and accurate guidance and positioning, which greatly improves the assembly efficiency and accuracy. After being inserted into place, the top of the abutment block 4 can still maintain close contact with the bottom plane of the groove of the second rubber stopper 3, thereby ensuring the designed height of the glue filling cavity and ensuring the size and sealing effect of the seal.

[0032] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A high-sealing supercapacitor with a double-layer rubber stopper, characterized in that: Includes an aluminum shell (1), with a first rubber plug (2) and a second rubber plug (3) provided at the top opening of the aluminum shell (1), and a sealing element provided between the first rubber plug (2) and the second rubber plug (3). The top of the first rubber plug (2) is integrally formed with an abutment block (4) and abuts against the bottom of the second rubber plug (3), forming a cavity for accommodating the sealing element.

2. The high-sealing supercapacitor with double-layer rubber stopper according to claim 1, characterized in that: The sealing material is one of epoxy resin, polyurethane, UV adhesive, and silicone; the first rubber stopper (2) and the second rubber stopper (3) are made of one of EPDM rubber, silicone, butyl rubber, and fluororubber.

3. A high-sealing supercapacitor with a double-layer rubber stopper according to claim 1, characterized in that: The first rubber plug (2) and the second rubber plug (3) have two through slots for the guide needle to pass through, and the abutment block (4) has two blocks located on both sides of the through slots.

4. A high-sealing supercapacitor with a double-layer rubber stopper according to claim 3, characterized in that: The two abutting blocks (4) are specifically symmetrically arranged arc-shaped blocks, and their peripheral arcs are located within the concentric circles on the surface of the first rubber stopper (2).

5. A high-sealing supercapacitor with a double-layer rubber stopper according to claim 4, characterized in that: The surface of the first rubber stopper (2) is also provided with a barrier (5), the barrier (5) includes a water-absorbing layer (6) and a water-proof layer (7), the water-absorbing layer (6) and the water-proof layer (7) are provided with a through groove for the guide needle to pass through and an arc-shaped groove for the abutment block (4) to pass through.

6. A high-sealing supercapacitor with a double-layer rubber stopper according to claim 5, characterized in that: The absorbent layer (6) is specifically a porous polymer impregnated with a desiccant.

7. A high-sealing supercapacitor with a double-layer rubber stopper according to claim 5, characterized in that: The waterproof layer (7) is an aluminum-plastic composite film, and its edges are sealed to the surface of the first plug (2) by hot melt adhesive.

8. A high-sealing supercapacitor with a double-layer rubber stopper according to claim 6, characterized in that: The absorbent layer (6) and the waterproof layer (7) are pressed together to form a composite film structure.

9. A high-sealing supercapacitor with a double-layer rubber stopper according to claim 1, characterized in that: The bottom of the second rubber plug (3) is provided with a positioning groove (8) for the abutment block (4) to be inserted, and its height is less than the height of the abutment block (4).

10. A high-sealing supercapacitor with a double-layer rubber stopper according to claim 1, characterized in that: Both the first rubber stopper (2) and the second rubber stopper (3) are provided with annular grooves (9) on their periphery, and the aluminum shell (1) is recessed inward to form a waist groove (10) that is embedded in and abuts against the annular grooves (9).

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