Capacitive lithium battery sealing structure

Abstract

The utility model relates to a kind of capacitive lithium battery sealing structure, including shell, electric core, positive pole guide needle, negative pole guide needle, electric core is installed in shell interior, electric core is respectively electrically connected positive pole guide needle, negative pole guide needle, it is characterized by: the upper part of the inside of shell is equipped with insulating rubber plug, positive pole guide needle, negative pole guide needle are extracted from insulating rubber plug in the same direction, the periphery of shell side is equipped with the concave waistband, the depth of waistband is 2-4mm, waistband presses insulating rubber plug side, shell upper end is bent inward to form sealing band, the length of sealing band is 1-2mm, sealing band presses the upper surface of insulating rubber plug, the utility model capacitive lithium battery sealing structure uses waistband and sealing band to limit the position of insulating rubber plug simultaneously by mutual cooperation, so that insulating rubber plug is fixedly equipped in the upper part of the inside of shell and cannot be loose, structure design is simple, reasonable, without multiple parts production efficiency is high, cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of lithium batteries, specifically to a sealed structure for a capacitive lithium battery. Background Technology

[0002] The sealing of existing cylindrical lithium batteries is achieved through a top cover. The top cover typically consists of a top cover plate, a gasket, an vent, a safety valve, and a sealing ring. The vent is located within the safety valve. The top cover plate, gasket, safety valve, and sealing ring are installed sequentially from top to bottom inside the outer casing. The disadvantages of this top cover sealing structure are its numerous and complex components, high manufacturing difficulty, low assembly efficiency, and high cost. Utility Model Content

[0003] To address the aforementioned shortcomings of existing technologies, the technical problem this invention aims to solve is how to design a simple and reasonable sealing structure. The specific technical solution is as follows:

[0004] A sealed structure for a capacitive lithium battery includes a shell, a battery cell, a positive electrode guide pin, and a negative electrode guide pin. The battery cell is installed inside the shell and is electrically connected to the positive electrode guide pin and the negative electrode guide pin respectively. An insulating rubber plug is fitted inside the upper middle part of the shell. The positive electrode guide pin and the negative electrode guide pin lead out of the insulating rubber plug in the same direction. A concave waistband with a depth of 2-4mm is provided on the outer periphery of the shell. The waistband presses down on the side of the insulating rubber plug. The upper end of the shell is bent inward to form a sealing strip with a length of 1-2mm. The sealing strip presses down on the upper surface of the insulating rubber plug.

[0005] As a preferred embodiment of this utility model, there is at least one waist belt, which is designed to wrap around the outer periphery of the outer shell in a ring shape.

[0006] As a preferred embodiment of this utility model, the waist belt has a depth of 3mm.

[0007] As a preferred embodiment of this utility model, the sealing strip is designed in a ring shape, and the sealing strip and the side wall of the outer shell form a limiting structure with an inverted L-shaped cross section.

[0008] As a preferred embodiment of this utility model, the length of the sealing tape is 1.5mm.

[0009] As a preferred embodiment of this utility model, the outer shell is made of aluminum.

[0010] Beneficial effects: The sealing structure of this novel capacitor-type lithium battery uses a waist belt and a sealing belt to simultaneously restrict the position of the insulating rubber plug, so that the insulating rubber plug is fixedly fitted inside the upper part of the shell and will not loosen. The structure is simple and reasonable, requires no multiple parts, has high production efficiency, and saves costs. Attached Figure Description

[0011] Figure 1This is a structural cross-sectional view of the present invention;

[0012] Figure 2 yes Figure 1 A magnified view of point I in the middle. Detailed Implementation

[0013] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0014] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0016] like Figure 1 and 2 As shown, a capacitive lithium battery sealing structure includes a shell 1, a battery cell 2, a positive electrode guide pin 3, and a negative electrode guide pin 4. The shell 1 is an aluminum shell, and the battery cell 2 is installed inside the shell 1. The battery cell 2 is electrically connected to the positive electrode guide pin 3 and the negative electrode guide pin 4 respectively. An insulating rubber plug 5 is fitted inside the upper middle part of the shell 1. The outer diameter of the insulating rubber plug 5 is clearance-fitted with the inner diameter of the shell 1. The insulating rubber plug 5 is preferably made of plastic. The positive electrode guide pin 3 and the negative electrode guide pin 4 lead out of the insulating rubber plug 5 in the same direction. A concave waistband 6 is provided on the outer periphery of the shell 1. The depth A of the waistband 6 is 2-4mm. The waistband 6 presses down on the side of the insulating rubber plug 5. The upper end of the shell 1 is bent inward to form a sealing strip 7. The length B of the sealing strip 7 is 1-2mm. The sealing strip 7 presses down on the upper surface of the insulating rubber plug 5.

[0017] Specifically, there is at least one waist belt 6. The waist belt 6 is designed to wrap around the outer periphery of the outer shell 1 in a ring shape. The depth of the waist belt 6 is preferably 3mm. The waist belt 6 is formed by using a waist belt roller to press the side wall of the outer shell 1. After the waist belt 6 is formed, it can be embedded and pressed against the side of the insulating rubber plug 5 to fix the position of the insulating rubber plug 5.

[0018] Specifically, the sealing tape 7 is designed in a ring shape, and the sealing tape 7 and the side wall of the outer shell 1 form a limiting structure with an inverted L-shaped cross section. The length of the sealing tape 7 is 1.5mm. The upper edge of the outer shell 1 is pressed by an inclined roller. After the sealing tape 7 is formed, it can effectively prevent the insulating plug 5 from falling out of the opening above the outer shell 1.

[0019] The above description is a further detailed explanation of the present utility model in conjunction with specific preferred embodiments. It should not be considered that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the protection scope of the present utility model.

Claims

1. A sealed structure for a capacitive lithium battery, comprising a casing, a battery cell, a positive electrode pin, and a negative electrode pin, wherein the battery cell is installed inside the casing and electrically connected to the positive electrode pin and the negative electrode pin respectively, characterized in that: An insulating rubber plug is fitted inside the upper part of the outer shell. The positive and negative electrode leads out of the insulating rubber plug in the same direction. A concave waistband is provided on the outer periphery of the outer shell. The waistband has a depth of 2-4mm and presses down on the side of the insulating rubber plug. The upper end of the outer shell is bent inward to form a sealing strip with a length of 1-2mm. The sealing strip presses down on the upper surface of the insulating rubber plug.

2. The sealed structure of a capacitor-type lithium battery according to claim 1, characterized in that: There is at least one waist belt, which is designed to wrap around the outer periphery of the outer shell in a ring shape.

3. A sealed structure for a capacitive lithium battery according to claim 1 or 2, characterized in that: The waist belt is 3mm deep.

4. The sealed structure of a capacitor-type lithium battery according to claim 1, characterized in that: The sealing strip has a ring-shaped design, and the sealing strip and the side wall of the outer shell form a limiting structure with an inverted L-shaped cross section.

5. A sealed structure for a capacitive lithium battery according to claim 1 or 4, characterized in that: The sealing tape is 1.5mm long.

6. A sealed structure for a capacitive lithium battery according to any one of claims 1-5, characterized in that: The outer shell is made of aluminum.

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