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An ultra-thin polymer chip laminated solid aluminum electrolytic capacitor and its preparation method

A technology of electrolytic capacitors and polymer sheets, applied in the field of capacitors, can solve problems such as insufficient lead terminal area and large ESR, achieve significant economic and social benefits, reduce ESR, and have strong operability

Active Publication Date: 2021-03-23
福建国光新业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preparing an ultra-thin polymer chip laminated solid aluminum electrolytic capacitor, so as to solve the problem that the ESR is too large in the manufacturing process of the ultra-thin polymer chip laminated solid aluminum electrolytic capacitor , and the area covered by the lead terminal on the side of the product cannot meet the requirements for surface mount solder coverage

Method used

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  • An ultra-thin polymer chip laminated solid aluminum electrolytic capacitor and its preparation method
  • An ultra-thin polymer chip laminated solid aluminum electrolytic capacitor and its preparation method
  • An ultra-thin polymer chip laminated solid aluminum electrolytic capacitor and its preparation method

Examples

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Embodiment 1

[0043] A method for preparing an ultra-thin polymer chip laminated solid aluminum electrolytic capacitor, characterized in that the method comprises the following steps:

[0044](1) Select 3VF aluminum foil (anode aluminum foil formed by 3V voltage) for cutting, and cut it into a long strip. The long strip can be 12mm long and 3.6mm wide, and then set a barrier glue 11 on the cut aluminum foil, The barrier glue divides the cut aluminum foil into a cathode area 12 and an anode area 13, wherein the cathode area 12 can have a length of 5.0mm; Figure 1-2 shown.

[0045] (2) On the surface of the aluminum foil cathode region 12 prepared in step (1), after the first polypyrrole solid electrolyte layer is prepared by a chemical polymerization process, an electrolytic polymerization process is performed to obtain a second polypyrrole solid electrolyte layer to form Conductive polymer solid electrolyte layer 14; as image 3 .

[0046] (3) Immerse the cathode area of ​​the aluminum ...

Embodiment 2

[0054] Compared with Example 1, this embodiment, except in step (4), "form a silver-containing cathode layer on both sides of the aluminum foil cathode region, and form a diameter of 1mm and a depth of 0.1mm at the center of the silver-containing cathode layer on both sides. Circular pit, make monolithic capacitor element " is different, all the other processes are all the same as embodiment 1.

Embodiment 3

[0056] Compared with Example 1, this embodiment except that in step (4), "A silver-containing cathode layer is formed on both sides of the aluminum foil cathode region, and three silver-containing cathode layers with a diameter of 1 mm and a depth of 0.05 mm are formed at the center positions of the two sides of the silver-containing cathode layer. Circular pit, make monolithic capacitor element " is different, all the other processes are all the same as embodiment 1.

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Abstract

The invention relates to the field of capacitors, and in particular to an ultra-thin polymer chip-type laminated solid aluminum electrolytic capacitor. The capacitor is characterized by comprising a capacitor core package, wherein the capacitor core package comprises at least three monolithic capacitor elements, a cathode tongue and an anode tongue, wherein the monolithic capacitor elements comprise cathode regions and anode regions; the cathode tongue comprises a cathode tongue main body and a hollow dentiform structure arranged at the front end of the cathode tongue main body; the anode tongue comprises an anode tongue main body; one of the monolithic capacitor elements is laminated and bonded on the front sides of the cathode tongue and the anode tongue; and the other two monolithic capacitor elements are laminated and bonded on the back sides of the cathode tongue and the anode tongue. The capacitor has the beneficial effects that on the basis of maintaining the same electrical performance parameters, the polymer chip-type laminated solid aluminum electrolytic capacitor can be more compact in structure and smaller in thickness; the market demand for solid electrolytic capacitors with smaller volumes is met; the preparation process is strong in operability; and therefore, the capacitor has remarkable economic benefit and social benefit.

Description

technical field [0001] The invention relates to the field of capacitors, in particular to a method for preparing an ultra-thin polymer chip laminated solid aluminum electrolytic capacitor. Background technique [0002] Polymer chip laminated solid aluminum electrolytic capacitors use conductive polymers as electrolytes. Compared with traditional liquid aluminum electrolytic capacitors, they have many advantages such as smaller volume, better performance, wide temperature range, long life, high reliability and high environmental protection. . At present, the preparation process of polymer chip laminated solid aluminum electrolytic capacitors is mainly to form a conductive polymer solid electrolyte layer on the surface of the aluminum foil cathode area by chemical polymerization or electrolytic polymerization, and then prepare a carbon-containing cathode layer and a silver-containing cathode layer in sequence to form Capacitor unit: Multiple capacitor units are laminated and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/012H01G9/042H01G9/048H01G9/08H01G9/14H01G9/15H01G9/26
CPCH01G9/012H01G9/0425H01G9/048H01G9/08H01G9/14H01G9/15H01G9/153H01G9/26
Inventor 张秋水陈巧琳谢盼盼王国平
Owner 福建国光新业科技股份有限公司