Super capacitor with stable structure and high sealing performance

Abstract

The utility model discloses a high-sealing super capacitor with a stable structure, relates to the technical field of capacitors, and aims to solve the technical problem of insufficient sealing of super capacitors. According to the technical scheme, the battery comprises an aluminum shell and a battery cell arranged in the aluminum shell, the battery cell comprises a roll core and a guide pin, a rubber plug is arranged on the roll core, a through hole for the guide pin to penetrate through is formed in the rubber plug, and a sealing cover is formed in the position, located on the upper surface of the rubber plug, in the aluminum shell through glue pouring. The aluminum shell is concaved inwards along the peripheral side of the bottom of the rubber plug to form a first outer girdling, and the aluminum shell is concaved inwards along the peripheral side of the top of the rubber plug to form a second outer girdling.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, and more specifically, to a super capacitor with stable structure and high sealing performance. Background Art

[0002] The super capacitor is an electro-chemical element developed in the 1970s and 1980s for energy storage by polarizing the electrolyte. During the energy storage process, no chemical reaction occurs, and this energy storage process is reversible. For this reason, the super capacitor can be charged and discharged hundreds of thousands of times. Its outstanding advantages are high power density, short charge and discharge time, long cycle life, and wide operating temperature range.

[0003] A super capacitor housing, a super capacitor and a super capacitor module disclosed in a Chinese patent with the publication number CN113611540A have the following technical key points: including an aluminum shell, which is provided with a receiving cavity and a heat dissipation channel for the circulation of a heat conduction medium; a first connection structure and a second connection structure, both arranged on the aluminum shell; one of the first connection structure and the second connection structure is provided with an inlet, and the other is provided with an outlet, and both the inlet and the outlet are communicated with the heat dissipation channel; adjacent two super capacitor housings can be connected through the first connection structure and the second connection structure.

[0004] In the above technical solution, the heat dissipation problem of the capacitor is better solved. However, since the lead pin is a connecting component between the inside and the outside of the super capacitor, and there is a perforation passing through the lead pin inside, and there is a lack of a reasonable sealing structure such as a rubber cover, a sealing cover, etc., there may be insufficient sealing performance, resulting in the problem of electrolyte leakage. Therefore, a new technical solution is urgently needed to solve the above technical problems. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide a super capacitor with stable structure and high sealing performance.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: A super capacitor with stable structure and high sealing performance, including an aluminum shell and an electric core arranged inside the aluminum shell. A winding core is arranged inside the electric core, a rubber plug assembly is arranged on the winding core, and a lead pin is also arranged. The rubber plug assembly is provided with a perforation for the lead pin to pass through. A sealing cover formed by potting is arranged on the upper surface of the rubber plug assembly inside the aluminum shell. The aluminum shell is recessed inward along the circumferential side of the bottom of the rubber plug to form a first outer waist, and is recessed inward along the circumferential side of the top of the rubber plug to form a second outer waist.

[0007] By adopting the above technical solution, in the present application, a rubber plug assembly and a guide pin are provided on the core. On the aluminum shell, a first outer waist and a second outer waist are respectively recessed inward along the rubber plug, and a sealing cover formed by potting is provided on the upper surface of the rubber plug assembly. Such a design improves the sealing performance between the rubber plug assembly and the aluminum shell. Compared with the traditional capacitor with a single waist design, the first outer waist and the second outer waist can reduce the risk of liquid leakage and improve the overall sealing strength of the capacitor.

[0008] The present utility model is further configured as: a cross-shaped first reinforcing rib is inlaid and fixed on the lower surface of the rubber plug, and a cross-shaped second reinforcing rib is inlaid and fixed on the upper surface of the rubber plug.

[0009] By adopting the above technical solution, reinforcing ribs are respectively provided on the upper rubber plug and the lower rubber plug, which can enhance the compressive resistance and anti-deformation ability of the rubber plug. The presence of the reinforcing ribs enables the rubber plug to maintain good stability when subjected to external forces in different directions and is not prone to tilt or displacement. The cross-shaped design increases the contact area between the rubber plug and the aluminum shell and improves the reliability of the seal.

[0010] The present utility model is further configured as: a reinforcing ring is provided along the circumferential direction of the inner wall of the aluminum shell at the position of the sealing cover.

[0011] By adopting the above technical solution, setting the reinforcing ring can improve the sealing performance inside the structure. The reinforcing ring is wrapped around the circumference of the sealing cover to enhance the fixing strength and prevent the sealing cover from falling off.

[0012] The present utility model is further configured as: a plurality of block-shaped fixing pieces are provided at the top of the aluminum shell, and the fixing pieces are bent towards the inner side of the aluminum shell and abut against the top of the sealing cover.

[0013] By adopting the above technical solution, as a connecting member between the aluminum shell and the sealing cover, the fixing piece not only enhances the connection strength between the two but also improves the stability of the overall structure. When subjected to external forces, the fixing piece can disperse and resist these forces to prevent the aluminum shell or the sealing cover from deforming or being damaged.

[0014] The present utility model is further configured as: a plurality of vertically arranged grooves are formed in the circumferential inner wall of the aluminum shell, the top end of the groove penetrates through the top of the aluminum shell, and its bottom end is flush with the bottom of the sealing cover.

[0015] By adopting the above technical solution, the design of the groove increases the contact area between the sealing cover and the aluminum shell, thereby improving the reliability of the seal.

[0016] The utility model has the following beneficial effects: 1. The first outer waist and the second outer waist are designed to press and limit the rubber plug, and there is a sealing cover formed by pouring glue on the rubber plug, which can reduce the risk of liquid leakage and improve the overall sealing performance.

[0017] 2. Cross-shaped reinforcing ribs are respectively arranged on the upper surface and the lower surface of the rubber plug, and a plurality of vertically arranged grooves are formed on the inner circumferential wall of the aluminum shell; the designs of both can increase the contact area, and the design of the grooves can also effectively discharge the air or medium in the grooves when the sealing cover is closely attached to the aluminum shell, reducing the risk of leakage.

[0018] 3. A fixing piece is designed at the top of the aluminum shell to improve the overall strength of the structure, and when subjected to external force, it can disperse and resist part of the force to prevent the aluminum shell or the sealing cover from deforming; the reinforcing ring can reduce the direct contact between the aluminum shell and the sealing cover, thereby reducing the wear caused by friction and increasing the overall durability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of this embodiment;

[0020] Figure 2 is a sectional structural schematic diagram of this embodiment;

[0021] Figure 3 is a structural schematic diagram of the housing of this embodiment;

[0022] Figure 4 is a structural schematic diagram of the rubber plug of this embodiment.

[0023] BRIEF DESCRIPTION OF THE DRAWINGS: 1. Aluminum shell; 2. Battery cell; 3. Winding core; 4. Guide pin; 5. Rubber plug; 6. Perforation; 7. Sealing cover; 8. First outer waist; 9. Second outer waist; 10. First reinforcing rib; 11. Second reinforcing rib; 12. Reinforcing ring; 13. Fixing piece; 14. Groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes the present utility model in detail with reference to the drawings.

[0025] Among them, the same parts are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of the specific component respectively.

[0026] As shown in the figure, a supercapacitor with stable structure and high sealing performance includes an aluminum shell 1 and an electric core 2 arranged inside the aluminum shell 1. The electric core 2 includes a wound core 3 and a guide pin 4. It is characterized in that: a rubber plug 5 is arranged on the wound core 3, and a perforation 6 for the guide pin 4 to pass through is formed on the rubber plug 5. A sealing cover 7 formed by potting is arranged on the upper surface of the rubber plug 5 inside the aluminum shell 1. The aluminum shell 1 is recessed inward along the circumferential side of the bottom of the rubber plug 5 to form a first outer waist 8, and the aluminum shell 1 is recessed inward along the circumferential side of the top of the rubber plug 5 to form a second outer waist 9.

[0027] During production and processing, the rubber plug 5 assembly is placed on the top of the wound core 3, so that the guide pin 4 passes through the perforation 6. Then, the wound core 3 and the rubber plug 5 are placed inside the aluminum shell 1. A sealing cover 7 is formed on the top of the rubber plug 5 assembly inside the aluminum shell 1 through the potting process, and a first outer waist 8 and a second outer waist 9 are formed by injecting pressure inward on the outside of the aluminum shell 1. The sealing cover formed by potting and the waist formed by injecting pressure inward improve the sealing performance of the supercapacitor.

[0028] A cross-shaped first reinforcing rib 10 is inlaid and fixed on the lower surface of the rubber plug 5, and a cross-shaped second reinforcing rib 11 is inlaid and fixed on the upper surface of the rubber plug 5; the compressive resistance and anti-deformation ability of the rubber plug 5 can be enhanced. A first outer waist and a second outer waist are formed by pressing inward on the outside of the aluminum shell 1, making the reinforcing rib structure more stable, and further enabling the rubber plug 5 to maintain good stability when subjected to external forces in different directions and not prone to tilting or displacement; the reliability of the seal is improved.

[0029] A reinforcing ring 12 is arranged on the inner wall of the aluminum shell 1 at the position of the sealing cover 7 along its circumferential direction, and the reinforcing ring is in close contact with the inner wall of the aluminum shell; the sealing performance inside the structure can be improved. The reinforcing ring 12 can improve the sealing performance inside the structure. The reinforcing ring 12 covers the circumferential side of the sealing cover 7, enhancing the fixing strength and preventing the sealing cover 7 from falling off.

[0030] Several block-shaped fixing pieces 13 are arranged on the top of the aluminum shell 1. The fixing pieces 13 are bent towards the inner side of the aluminum shell 1 and abut against the top of the sealing cover 7; to enhance the connection strength between the aluminum shell and the sealing cover and improve the stability of the overall structure

[0031] Several vertically arranged grooves 14 are formed on the inner circumferential wall of the aluminum shell 1. The top ends of the grooves 14 penetrate through the top of the aluminum shell 1, and their bottom ends are flush with the bottom of the sealing cover 7; the design of the grooves 14 increases the contact area between the sealing cover 7 and the aluminum shell 1, further improving the reliability of the seal.

[0032] The specific embodiments are only explanations of the present invention and not limitations thereof. Those skilled in the art can make modifications to the embodiments without creative contributions according to needs after reading this specification, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A supercapacitor with stable structure and high sealing performance, comprising an aluminum shell (1) and an electric core (2) arranged inside the aluminum shell (1). The electric core (2) includes a wound core (3) and lead pins (4). A rubber plug (5) is arranged on the wound core (3), and a perforation (6) for the lead pins (4) to pass through is formed on the rubber plug (5). It is characterized in that: A sealing cover (7) is formed by potting on the upper surface of the rubber plug (5) inside the aluminum shell (1). The aluminum shell (1) is recessed inward along the circumferential side of the bottom of the rubber plug (5) to form a first outer waist (8), and the aluminum shell (1) is recessed inward along the circumferential side of the top of the rubber plug (5) to form a second outer waist (9).

2. The highly-sealed supercapacitor with stable structure according to claim 1, wherein: A first reinforcing rib (10) in a cross shape is inlaid and fixed on the lower surface of the rubber plug (5), and a second reinforcing rib (11) in a cross shape is inlaid and fixed on the upper surface of the rubber plug (5).

3. The highly-sealed supercapacitor with stable structure according to claim 2, characterized in that: A reinforcing ring (12) is arranged along the circumferential direction of the inner wall of the aluminum shell (1) at the position of the sealing cover (7).

4. A highly sealed supercapacitor with stable structure according to claim 3, characterized in that: A plurality of sheet-shaped fixing pieces (13) are arranged at the top of the aluminum shell (1), and the fixing pieces (13) are bent toward the inner side of the aluminum shell (1) and abut against the top of the sealing cover (7).

5. The highly-sealed supercapacitor with stable structure according to claim 4, characterized in that: A plurality of vertically arranged grooves (14) are formed in the circumferential inner wall of the aluminum shell (1). The top ends of the grooves (14) penetrate through the top of the aluminum shell (1), and the bottom ends thereof are flush with the bottom of the sealing cover (7).

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