Super capacitor stepwise multi-sealing process

Abstract

The application relates to a super capacitor step-by-step multiple sealing process. On the basis of rubber plug sealing, single-beam waist structure or double-beam waist structure positioning is used, and round corner sealing or filling sealing glue is used to realize reinforced sealing, so that the liquid leakage problem of the super capacitor caused by the sealing process is solved, the sealing property is obviously improved, and the service life of the super capacitor is prolonged.

Description

Technical Field

[0001] This invention relates to the field of supercapacitor manufacturing technology, specifically to a multi-step sealing process for supercapacitors. Background Technology

[0002] Supercapacitors are capacitors with higher capacity than traditional capacitors. They store energy by polarizing the electrolyte and have advantages such as high power density, long cycle life, rapid charging and discharging, and no pollution to the environment. They are widely used in smart meters, sensors, electric toys, and backup power for microcomputer memory. With the rapid development of the energy storage field, supercapacitors have broad market demand in national strategic emerging industries such as military and civilian applications.

[0003] Currently, many supercapacitors on the market suffer from leakage during use. Leaking capacitors, when used in high-temperature, high-humidity, and sealed environments for extended periods, can lead to decreased reliability, failure, or even corrosion of the PCB board, causing a chain reaction of malfunctions. Besides factors such as sealing structure design, material selection, and harsh application environments, the implementation and control of the sealing process are also crucial for leakage, and existing sealing technologies still require improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a convenient and reliable step-by-step, multi-stage sealing process for supercapacitors, which solves the leakage problem caused by the sealing process, significantly improves the sealing performance, and thus extends the service life of supercapacitors.

[0005] The technical solution of this invention is: A multi-stage sealing process for supercapacitors, the key technical points of which include the following steps: Step 1: Place one or two layers of rubber stoppers inside the upper end of the unsealed aluminum shell of the supercapacitor to seal the liquid-impregnated core. Then, the aluminum shell of the supercapacitor forms the first waist at the vertical middle position corresponding to the first layer of rubber stoppers. Step 2: Clean the electrolyte overflowing from the edge of the rubber stopper inside the aluminum shell of the supercapacitor; Step 3: If only the first layer of rubber stopper is present, roll the upper edge of the supercapacitor aluminum shell inward to form a rounded corner seal that compresses the first layer of rubber stopper; or reduce the upper edge of the supercapacitor aluminum shell and inject sealant between the reduced edge and the first layer of rubber stopper to seal the opening; or reduce the upper edge of the supercapacitor aluminum shell and form a second waist on the supercapacitor aluminum shell between the reduced edge and the first layer of rubber stopper, and then inject sealant between the reduced edge and the first layer of rubber stopper to seal the opening. Alternatively, in the case of a second rubber stopper, the aluminum shell of the supercapacitor forms a second waist at the vertical center of the second rubber stopper, and then the upper edge of the aluminum shell of the supercapacitor is rolled inward to form a rounded corner seal that compresses the second rubber stopper.

[0006] In the aforementioned multi-stage sealing process for supercapacitors, when there is only one layer of rubber stopper, the edge of the first layer of rubber stopper is squeezed into and fills the inside of the rounded corner seal.

[0007] The beneficial effects of this invention are as follows: 1. The step-by-step, multi-stage sealing process of the present invention, based on the rubber stopper sealing, utilizes a single-waist structure or a double-waist structure for positioning, and combines rounded corner sealing or filling with sealant to achieve enhanced sealing, which solves the leakage problem of supercapacitors caused by the sealing process, significantly improves the sealing performance, and thus extends the service life of supercapacitors.

[0008] 2. After forming the first waist structure, clean the electrolyte overflowing from the edge of the first layer of rubber plug to avoid residual electrolyte, prevent corrosion, and ensure the tightness of subsequent sealing processes. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of sealing process step 1 of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the product after sealing process step 3 in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of sealing process step 3 in Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the product after sealing process step 3 in Embodiment 2 of the present invention; Figure 5 This is a schematic diagram of sealing process step 3 in Embodiment 3 of the present invention; Figure 6 This is a schematic diagram of the product after sealing process step 3 in Embodiment 3 of the present invention; Figure 7 This is a schematic diagram of the product after sealing process step 3 in Embodiment 4 of the present invention.

[0010] In the diagram: 1. First layer of rubber stopper, 2. Aluminum shell of supercapacitor, 201. First waist, 202. Rounded corner seal, 203. Narrowing, 204. Second waist, 3. Liquid-impregnated core, 4. Lead pin, 5. Sealant, 6. Second layer of rubber stopper. Detailed Implementation

[0011] The present invention will be described in detail with reference to the accompanying drawings. Example

[0012] like Figure 1 , Figure 2 As shown, the multi-step sealing process of this supercapacitor includes the following steps: Step 1: Insert a first layer of rubber stopper 1 into the upper end of the unsealed aluminum shell 2 of the supercapacitor. Use the first layer of rubber stopper 1 to seal the liquid-impregnated core 3. Then, form a first waist 201 in the aluminum shell 2 of the supercapacitor at the vertical midpoint corresponding to the first layer of rubber stopper 1. The first layer of rubber stopper 1 is provided with positioning holes corresponding to the positive and negative leads 4 of the supercapacitor. The positive and negative leads 4 are pre-fixed to the first layer of rubber stopper 1.

[0013] Step 2: Clean the electrolyte overflowing from the edge of the first rubber stopper 1 inside the aluminum shell 2 of the supercapacitor.

[0014] Step 3: Roll the upper edge of the aluminum shell 2 of the supercapacitor inward to form a rounded corner seal 202 that compresses the first layer of rubber stopper 1. The edge of the first layer of rubber stopper 1 is squeezed into and fills the inside of the rounded corner seal 202. Example

[0015] like Figure 3 , Figure 4 As shown, the multi-step sealing process of this supercapacitor includes the following steps: Step 1: Place a first layer of rubber stopper 1 inside the upper end of the unsealed aluminum shell 2 of the supercapacitor, and use the first layer of rubber stopper 1 to seal the liquid-impregnated core 3. Then, the aluminum shell 2 of the supercapacitor forms a first waist 201 at the vertical middle position corresponding to the first layer of rubber stopper 1.

[0016] Step 2: Clean the electrolyte overflowing from the edge of the first rubber stopper 1 inside the aluminum shell 2 of the supercapacitor.

[0017] Step 3: Shrink the upper edge of the aluminum shell 2 of the supercapacitor and inject sealant 5 between the shrink 203 and the first layer of rubber plug 1 to seal it. Example

[0018] like Figure 5 , Figure 6 As shown, the multi-step sealing process of this supercapacitor includes the following steps: Step 1: Place a first layer of rubber stopper 1 inside the upper end of the unsealed aluminum shell 2 of the supercapacitor, and use the first layer of rubber stopper 1 to seal the liquid-impregnated core 3. Then, the aluminum shell 2 of the supercapacitor forms a first waist 201 at the vertical middle position corresponding to the first layer of rubber stopper 1.

[0019] Step 2: Clean the electrolyte overflowing from the edge of the first rubber stopper 1 inside the aluminum shell 2 of the supercapacitor.

[0020] Step 3: Make the upper edge of the supercapacitor aluminum shell 2 narrow, and form a second waist 204 on the supercapacitor aluminum shell 2 between the narrow 203 and the first layer of rubber plug 1. Then, inject sealant 5 between the narrow 203 and the first layer of rubber plug 1 to seal the opening. Example

[0021] The supercapacitor's multi-stage sealing process includes the following steps: Step 1: Two layers of rubber plugs, namely the first rubber plug 1 and the second rubber plug 6, are installed on the upper end of the unsealed aluminum shell 2 of the supercapacitor. The first rubber plug 1 is used to seal the liquid-impregnated core 3. Then, the aluminum shell 2 of the supercapacitor forms a first waist 201 at the vertical midpoint corresponding to the first rubber plug 1. The first rubber plug 1 and the second rubber plug 6 are pre-fixed and connected to the positive and negative leads 4 as a whole.

[0022] Step 2: Clean the electrolyte overflowing from the edge of the first rubber stopper 1 inside the aluminum shell 2 of the supercapacitor.

[0023] Step 3: The aluminum shell 2 of the supercapacitor forms a second waist 204 at the vertical center of the second layer of rubber stopper 6. Then, the upper edge of the aluminum shell 2 of the supercapacitor is rolled inward to form a rounded corner seal 202 that compresses the second layer of rubber stopper 6. See [link / reference]. Figure 7 .

[0024] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A multi-stage sealing process for supercapacitors, characterized in that, Includes the following steps: Step 1: Place one or two layers of rubber stoppers inside the upper end of the unsealed aluminum shell of the supercapacitor to seal the liquid-impregnated core. Then, the aluminum shell of the supercapacitor forms the first waist at the vertical middle position corresponding to the first layer of rubber stoppers. Step 2: Clean the electrolyte overflowing from the edge of the rubber stopper inside the aluminum shell of the supercapacitor; Step 3: If only the first layer of rubber stopper is present, roll the upper edge of the supercapacitor aluminum shell inward to form a rounded corner seal that compresses the first layer of rubber stopper; or reduce the upper edge of the supercapacitor aluminum shell and inject sealant between the reduced edge and the first layer of rubber stopper to seal the opening; or reduce the upper edge of the supercapacitor aluminum shell and form a second waist on the supercapacitor aluminum shell between the reduced edge and the first layer of rubber stopper, and then inject sealant between the reduced edge and the first layer of rubber stopper to seal the opening. Alternatively, in the case of a second rubber stopper, the aluminum shell of the supercapacitor forms a second waist at the vertical center of the second rubber stopper, and then the upper edge of the aluminum shell of the supercapacitor is rolled inward to form a rounded corner seal that compresses the second rubber stopper.

2. The multi-stage sealing process for supercapacitors according to claim 1, characterized in that: In the case of only one layer of rubber stopper, the edge of the first layer of rubber stopper is squeezed into and fills the inside of the rounded corner seal.

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