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Manufacturing method of laminated aluminum electrolytic capacitor and capacitor manufactured by the method

An aluminum electrolytic capacitor and the technology of its manufacturing method, which are applied in the field of capacitors, can solve the problems of increased heat generation of capacitors, the inability to completely eliminate pinholes in electrolytic paper, and shortened lifespan, and achieve the goals of improving loss and heat generation, increasing capacity extraction rate, and prolonging service life Effect

Active Publication Date: 2021-08-27
DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method will lead to an increase in the thickness of the electrolytic paper, which will not only increase the size of the manufactured capacitor, but also increase the loss and ESR of the capacitor, which will increase the heat generation of the capacitor during use and shorten the life; and this method cannot completely eliminate the pinholes in the electrolytic paper. , the capacitors produced still have potential safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Laminated aluminum electrolytic capacitors are produced through the following processes: slitting, riveting, electrospinning, lamination, impregnation, and encapsulation.

[0029] Wherein the parameters of the electrospinning are as follows:

[0030] The electrospinning method is multi-nozzle electrospinning mode;

[0031] The spinning voltage is 25kv;

[0032] In terms of mass ratio, the solution is composed of sisal pulp, acrylic acid, polyethylene glycol and water, and the ratio of each component is 1:1:2:96.

[0033] The parameters of capacitors fabricated in this way are shown in the attached Table 1.

Embodiment 2

[0035] Laminated aluminum electrolytic capacitors are produced through the following processes: slitting, riveting, electrospinning, lamination, impregnation, and encapsulation.

[0036] Wherein the parameters of the electrospinning are as follows:

[0037] The electrospinning method is multi-nozzle electrospinning mode;

[0038] The spinning voltage is 60kv;

[0039] In terms of mass ratio, the solution is composed of Spanish grass pulp, acrylic acid, polyethylene glycol and water, and the ratio of each component is 5:3:5:87.

[0040] The parameters of capacitors fabricated in this way are shown in the attached Table 1.

Embodiment 3

[0042] Laminated aluminum electrolytic capacitors are produced through the following processes: slitting, riveting, electrospinning, lamination, impregnation, and encapsulation.

[0043] Wherein the parameters of the electrospinning are as follows:

[0044] The electrospinning method is the nozzleless electrospinning mode;

[0045] The spinning voltage is 45kv;

[0046] In terms of mass ratio, the solution is composed of Spanish grass pulp, acrylic acid, polyethylene glycol and water, and the ratio of each component is 3:1:4:92.

[0047] The parameters of capacitors fabricated in this way are shown in the attached Table 1.

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Abstract

The invention provides a method for manufacturing a laminated aluminum electrolytic capacitor, comprising a slicing process, a riveting process, an electrospinning process, a stacking process, an impregnation process, and a packaging process, wherein the electrospinning process is performed in the riveting process After that, electrospinning technology is used to directly spin on the surface of the anode foil to prepare filamentary electrolytic paper, which is attached to the surface of the anode foil to replace the separated electrolytic paper in the traditional technology.

Description

technical field [0001] The invention belongs to capacitor technology, and in particular relates to a manufacturing method of a laminated aluminum electrolytic capacitor and a capacitor manufactured by the method. Background technique [0002] Aluminum electrolytic capacitors are composed of anode foil, cathode foil, electrolytic paper, liquid electrolyte, lead-out strips and packaging shells, and then made into aluminum electrolytic capacitors through aging and empowerment processes. [0003] Wherein the electrolytic paper is used between the anode and the cathode of the electrolytic capacitor, it can not only prevent the two poles from contacting, but also store the electrolyte. In order to improve the performance of aluminum electrolytic capacitors, the capacitor paper used is different from ordinary paper. It requires high purity, uniform paper quality, uniform thickness and tightness, and uniform fiber arrangement. Sufficient mechanical and electrical strength, and bett...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/00H01G9/004H01G9/035H01G9/045H01G9/145
CPCH01G9/0029H01G9/004H01G9/035H01G9/045H01G9/145
Inventor 余英凤邓利松何凤荣李刚温益凡
Owner DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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