CN-121983440-A - Heavy-duty super capacitor

CN121983440ACN 121983440 ACN121983440 ACN 121983440ACN-121983440-A

Abstract

The invention discloses a heavy-duty super capacitor which comprises an aluminum shell, a core package and a terminal cover plate assembly, wherein the terminal cover plate assembly comprises a cover plate body and a terminal conductive column, the terminal conductive column comprises a connecting end and a fixed end, the connecting end is used for being connected with the outside, the fixed end is arranged in a through hole of the cover plate body, the core package comprises inner electrolytic paper, positive electrode aluminum foil, middle electrolytic paper and negative electrode aluminum foil, the positive electrode aluminum foil comprises positive electrode base layer aluminum foil and positive electrode pure aluminum layer protruding from one end edge of the positive electrode base layer aluminum foil in the longitudinal direction, the negative electrode aluminum foil comprises negative electrode base layer aluminum foil and negative electrode pure aluminum layer protruding from one end edge of the negative electrode base layer aluminum foil in the longitudinal direction, and the positive electrode pure aluminum layer and the negative electrode pure aluminum layer are not overlapped with each other. The heavy-duty super capacitor can greatly improve the current carrying capacity of current and the charge and discharge functions of the capacitor, so that the safety performance of the capacitor in heavy-duty situations of frequent rapid acceleration and energy recovery is improved.

Inventors

YIN ZHIHUA
LI LIANG
YIN CHAO

Assignees

深圳江浩电子有限公司

Dates

Publication Date: 20260505
Application Date: 20251215

Claims (10)

1. The heavy-duty super capacitor comprises an aluminum shell, a core package placed in the aluminum shell and a terminal cover plate assembly used for packaging the core package in the aluminum shell, wherein the terminal cover plate assembly comprises a cover plate body and a terminal conductive column arranged on the cover plate body, the terminal conductive column comprises a connecting end and a fixed end, the connecting end is used for being connected with the outside, the fixed end is arranged in a through hole of the cover plate body, the core package comprises inner electrolytic paper, positive electrode aluminum foil, middle electrolytic paper and negative electrode aluminum foil, the positive electrode aluminum foil comprises a positive electrode base layer aluminum foil and a positive electrode pure aluminum layer protruding from one longitudinal end edge of the positive electrode base layer aluminum foil, the negative electrode aluminum foil comprises a negative electrode base layer aluminum foil and a negative electrode pure aluminum layer protruding from one longitudinal end edge of the negative electrode base layer aluminum foil, one end of the core package is a coiled multi-layer positive electrode pure aluminum layer, and the other end of the core package is a coiled multi-layer negative electrode pure aluminum layer, and the positive electrode pure aluminum layer and the negative electrode pure aluminum layer do not overlap with each other.
2. The heavy-duty supercapacitor of claim 1, wherein the terminal cover plate assembly further comprises an explosion-proof valve mounted on the cover plate body, an anchor, and a rubber ring disposed between the anchor and the cover plate body.
3. The heavy-duty supercapacitor according to claim 1, wherein a through hole penetrating up and down is formed in the center of the cover plate body, and the terminal conductive post is installed in the through hole.
4. The heavy-duty supercapacitor of claim 1, wherein one end of the core pack is led out of the positive electrode, and the other end is led out of the negative electrode.
5. The heavy duty supercapacitor of any one of claims 1-4, wherein the cover plate body is in the shape of a third-order truncated cone comprising a first truncated cone, a second truncated cone and a third truncated cone.
6. The heavy-duty supercapacitor according to claim 5, wherein the first circular truncated cone is arranged at the bottom, the diameter of the first circular truncated cone is larger than that of the second circular truncated cone, the second circular truncated cone is arranged in the middle, the third circular truncated cone is arranged at the top, and the diameter of the second circular truncated cone is larger than that of the third circular truncated cone.
7. The heavy-duty supercapacitor of claim 6, wherein the fixed end of the terminal conductive post comprises an annular bottom, an annular middle and a cylindrical top, and the connecting end is cylindrical and protrudes upwards from the cylindrical top.
8. The heavy duty supercapacitor of claim 7 wherein said connecting end has a diameter smaller than a diameter of said cylindrical top portion and said connecting end is coaxially disposed with said cylindrical top portion.
9. The heavy-duty supercapacitor according to claim 8, wherein an annular groove is formed between the annular bottom and the annular middle part, and the annular groove and/or the surface of the annular middle part are/is provided with knurling.
10. The heavy-duty supercapacitor of claim 9, wherein the diameter of the annular bottom portion is greater than the diameter of the annular middle portion, the diameter of the annular middle portion is greater than the diameter of the cylindrical top portion, and the diameter of the cylindrical top portion is equal to the inner diameter of the through hole of the cover plate body.

Description

Heavy-duty super capacitor Technical Field The invention belongs to the technical field of electronic devices, and particularly relates to a heavy-duty super capacitor. Background At present, in the light-load field such as computer data storage power supply, low-voltage energy feeding, instrument and meter data safety, power supply filtering below 48V and the like, the traditional super capacitor is widely applied because of the advantages of high charge and discharge speed, long cycle life and the like. However, with the development of new energy sources, smart grids, large industrial equipment and the like, extremely high requirements are put on the instantaneous power output capacity of an energy storage device, namely, a super capacitor capable of bearing hundreds of amperes or even thousands of amperes of instantaneous current is needed, so that in the fields of high-power energy feeding, energy storage and power supply, the traditional super capacitor is not ideal in performance, and the discharge current is small, particularly, under the condition that the charging and discharging life of a string is 50 ten thousand times and the single body is discharged 100 ten thousand times, the whole super capacitor cannot be well utilized. On new energy automobiles, under the heavy-load scene of frequent rapid acceleration and energy recovery, the defects of the traditional super capacitor are more remarkable, and the traditional super capacitor cannot meet the requirements of the new energy automobiles, so that development and research are necessary to provide a solution of the heavy-load super capacitor, and the heavy-load charging and discharging scene of the new energy automobiles and the like can be met. The foregoing background is only for the purpose of providing an understanding of the inventive concepts and technical aspects of the present application and is not necessarily prior art to the present application and is not intended to be used as an aid in the evaluation of the novelty and creativity of the present application in the event that no clear evidence indicates that such is already disclosed at the date of filing of the present application. Disclosure of Invention The present invention is directed to a heavy-duty supercapacitor, so as to solve at least one of the above-mentioned problems in the prior art. In order to achieve the above object, the technical solution of the embodiment of the present invention is as follows: The heavy-duty super capacitor comprises an aluminum shell, a core package placed in the aluminum shell and a terminal cover plate assembly used for packaging the core package in the aluminum shell, wherein the terminal cover plate assembly comprises a cover plate body and a terminal conductive column arranged on the cover plate body, the terminal conductive column comprises a connecting end and a fixed end, the connecting end is used for being connected with the outside, the fixed end is arranged in a through hole of the cover plate body, the core package comprises inner electrolytic paper, positive electrode aluminum foil, middle electrolytic paper and negative electrode aluminum foil, the positive electrode aluminum foil comprises positive electrode base layer aluminum foil and positive electrode pure aluminum layer protruding from one end edge of the positive electrode base layer aluminum foil in the longitudinal direction, the negative electrode aluminum foil comprises negative electrode base layer aluminum foil and negative electrode pure aluminum layer protruding from one end edge of the negative electrode base layer aluminum foil in the longitudinal direction, one end of the core package is a coiled multi-layer positive electrode pure aluminum layer, the other end of the core package is a coiled multi-layer negative electrode pure aluminum layer, and the positive electrode pure aluminum layer and the negative electrode pure aluminum layer do not overlap with each other. In some embodiments, the terminal cover assembly further includes an explosion-proof valve mounted on the cover body, an anchor, and a rubber ring disposed between the anchor and the cover body. In some embodiments, a through hole penetrating up and down is arranged in the center of the cover plate body, and the terminal conductive post is installed in the through hole. In some embodiments, the core pack has one end leading out of the positive electrode and the other end leading out of the negative electrode. In some embodiments, the cover plate body is in the shape of a third-order truncated cone, which includes a first truncated cone, a second truncated cone, and a third truncated cone. In some embodiments, the first frustoconical member is disposed at the bottom, the first frustoconical member has a diameter greater than a diameter of the second frustoconical member, the second frustoconical member is intermediate, the third frustoconical member is disposed at the top, and the second frustoconical m