Super capacitor cell and capacitor

By using high-purity positive and negative electrode pure aluminum layers and conductive polymer coating technology in the supercapacitor cell, combined with a specially designed terminal cover assembly, the problem of traditional supercapacitors being unable to meet the instantaneous current requirements of high-power power supply and heavy-load scenarios of new energy vehicles has been solved, thereby improving the current carrying capacity and charging and discharging function.

CN122000209APending Publication Date: 2026-05-08SHENZHEN JIANGHAO ELECTRON
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Patent Information

Application Number
CN202511897919.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-15
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Traditional supercapacitors cannot meet the instantaneous current requirements of hundreds or even thousands of amperes in high-power energy feeding, energy storage and power supply, especially in the frequent rapid acceleration and heavy-load energy recovery scenarios of new energy vehicles.

Method used

The positive and negative electrode pure aluminum layers are 30-50μm thick and have a purity of 99.999% or higher. The positive and negative electrode pure aluminum layers extend in opposite directions. After winding, the positive electrode is led out from one end of the cell and the negative electrode is led out from the other end. A thick pure aluminum foil layer is coated with conductive polymer material and combined with a specially designed terminal cover plate assembly to improve the current carrying capacity and charging and discharging function.

Benefits of technology

It significantly improves the current carrying capacity and charging/discharging function of capacitors, enhancing safety performance under heavy load conditions.

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Abstract

The invention discloses a super capacitor cell and a capacitor. The cell comprises inner-layer electrolytic paper, a positive electrode aluminum foil, middle-layer electrolytic paper and a negative electrode aluminum foil. Wherein the positive electrode aluminum foil comprises a positive electrode base layer aluminum foil and a positive electrode pure aluminum layer; the negative electrode aluminum foil comprises a negative electrode base layer aluminum foil and a negative electrode pure aluminum layer; the extension directions of the positive electrode pure aluminum layer and the negative electrode pure aluminum layer are opposite; the thickness of the positive electrode base layer aluminum foil is greater than that of the positive electrode pure aluminum layer, and / or the thickness of the negative electrode base layer aluminum foil is greater than that of the negative electrode pure aluminum layer. According to the super capacitor cell and the capacitor, the current carrying capacity of the current and the charging and discharging functions of the capacitor can be greatly improved, and the safety performance of the capacitor in the heavy load scene of frequent rapid acceleration and energy recovery is further improved.
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