A kind of electrochemical supercapacitor and its manufacturing method

Abstract

The invention discloses an electrochemical super capacitor and a manufacturing method thereof. The manufacturing method for the super capacitor comprises the following steps of: (1) superposing a first pole piece, an outer diaphragm, a second pole piece and an inner diaphragm from outside to inside in turn, and coiling the components to manufacture an electrode coiled core of which two ends are provided with outstretched electrode lugs; (2) compacting the electrode lugs at the two ends of the electrode coiled core, fixedly connecting the compacted electrode lugs to a packing block respectively, and assembling the electrode lugs with a shell by adopting a cold-hot mixed assembling mode; (3) sleeving an insulating washer on the packing block, then matching and connecting the packing block with the lower part of an end cover, sleeving a seal ring on the lower part of the end cover, and sleeving an insulating washer on the upper part of the end cover; and (4) forming a rolling groove on a part of the shell corresponding to a gap between the packing block and the end cover, compacting the inner wall of the roller groove to the seal ring and the insulating washer, and then packaging the components to manufacture the electrochemical super conductor. The manufacturing method provided by the invention is simple and is suitable for industrial production, and the electrochemical super conductor manufactured by the method has small internal resistance and good insulating property, is difficult to generate heat and is suitable for high-power application.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to an electrochemical supercapacitor and a manufacturing method thereof. Background technique [0002] Electrochemical supercapacitor is a new type of energy storage device, which combines the characteristics of high energy density, high power density, and long life. In addition, it also has the advantages of maintenance-free and high reliability. New electronic components. Compared with ordinary capacitors and batteries, electrochemical supercapacitors have the advantages of small size, large capacity, fast charging speed, long cycle life, high discharge power, wide operating temperature (-40°C ~ 85°C), and good reliability. Energy, communication, digital, electronics, medical, health, network, automobile and other fields have very broad application prospects. [0003] At present, the assembly process of electrochemical supercapacitors is mainly based on the lamination method....

AI Technical Summary

Problems solved by technology

Since the lamination method adopts the continuous coating method, in the subsequent process, the active material on the surface of the current collector needs to be cleaned according to the requirements of the lamination process for the electrode size, and the welding area is obtained to lead out the tabs, which increases the complexity of the process. At the same time, due to the complex lamination process and poor process consistency, the electrochemical supercapacitor monomers manufactured in large-scale industrial production have poor consistency, low energy density, and low production efficiency.

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