阅读说明：本技术 一种定量注入电解液的固液混合电容器制作方法 (Manufacturing method of solid-liquid mixed capacitor with electrolyte injected quantitatively ) 是由 余铁松 罗浩宇 张超 周世贤 于 2019-08-14 设计创作，主要内容包括：本发明公开了一种定量注入电解液的固液混合电容器制作方法,包括以下步骤：对正箔片、负箔片和隔离纸进行裁切；将正导针和负导针分别钉接在正箔片和负箔片上,再将箔片和隔离纸一起卷绕成素子；将胶塞装配到素子上；将装配好胶塞的素子点焊在不锈钢铁条上；点焊后再浸入到化成液中进行修复化成处理；化成后进行烘干处理；烘干后,在负压条件下采用导电性高分子聚合物进行的含浸；再进行烘干；将电解液定量注入到铝壳后,放入素子,进行装配；再老化,测试成型。实现电解液的精益使用,减少工序、减少电解液使用和工业擦拭纸的使用,节约生产成本、提高生产效率；在含浸前装配好胶塞,减少后续对素子结构的损伤,提高产品的良率和质量。(The invention discloses a manufacturing method of a solid-liquid mixed capacitor with electrolyte injected quantitatively, which comprises the following steps: cutting the positive foil, the negative foil and the isolation paper; respectively nailing the positive guide pin and the negative guide pin on the positive foil and the negative foil, and then winding the foil and the isolation paper together into an element; assembling the rubber plug on the element; spot-welding the elements with the assembled rubber plugs on a stainless steel iron strip; after spot welding, immersing the workpiece into a chemical forming liquid for repairing chemical forming treatment; drying after formation; after drying, impregnating by adopting a conductive high molecular polymer under a negative pressure condition; then drying is carried out; after the electrolyte is quantitatively injected into the aluminum shell, putting the aluminum shell into a biscuit and assembling; and aging, testing and forming. The lean use of the electrolyte is realized, the working procedures are reduced, the use of the electrolyte and the use of industrial wiping paper are reduced, the production cost is saved, and the production efficiency is improved; the rubber plug is assembled before impregnation, so that the subsequent damage to the element structure is reduced, and the yield and the quality of the product are improved.)

1. A manufacturing method of a solid-liquid mixed capacitor with electrolyte injected quantitatively is characterized by comprising the following steps:

1) cutting the positive foil, the negative foil and the isolation paper;

2) respectively nailing the positive guide pin and the negative guide pin on the positive foil and the negative foil, and then winding the foil and the isolation paper together into an element;

3) assembling the rubber plug on the element;

4) spot welding the elements with the assembled rubber plugs on a stainless steel iron strip;

5) after spot welding, immersing the workpiece into a chemical forming liquid for repairing chemical forming treatment;

6) drying for 40-160min after formation, wherein the drying temperature is 100-;

7) after drying, conducting impregnation for 1-22min by adopting the conductive high molecular polymer under the negative pressure condition, wherein the impregnation atmosphere is 10-90 kPa;

8) then drying for 30-180min at the temperature of 120-;

9) repeating the step 7) and the step 8), wherein the repetition frequency is 2-7 times;

10) quantitatively injecting electrolyte into the aluminum shell, and then putting the elements processed in the steps 1) to 9) into the aluminum shell for assembly;

11) and aging, testing and forming.

2. The method for manufacturing a solid-liquid hybrid capacitor with a fixed amount of electrolyte according to claim 1, wherein in the step 2), a nailing machine is used to nail the positive guide pin and the negative guide pin on the positive foil and the negative foil respectively.

3. The method for manufacturing a solid-liquid hybrid capacitor with a fixed amount of electrolyte according to claim 1, wherein the temperature of the formation liquid in the step 5) is 50-65 ℃, and the formation time is 5-30 min.

4. The method for manufacturing a solid-liquid hybrid capacitor with a fixed amount of electrolyte according to claim 1 or 3, wherein the chemical solution in the step 5) is an ammonium oxalate-based chemical solution or a boric acid-based chemical solution.

5. The method as claimed in claim 1, wherein the drying time in step 6) is 50-150min, and the drying temperature is 105-125 ℃.

6. The method for manufacturing a solid-liquid hybrid capacitor with a fixed amount of electrolyte according to claim 1, wherein the impregnation atmosphere in the step 7) is 50kPa to 90 kPa.

7. The method for manufacturing a solid-liquid hybrid capacitor with a fixed amount of electrolyte according to claim 1, wherein the impregnation time in the step 7) is 2 to 20 min.

8. The method for manufacturing a solid-liquid hybrid capacitor with a fixed amount of electrolyte according to claim 1, wherein the conductive polymer in step 7) is an aqueous PEDOT/PSS dispersion.

9. The method as claimed in claim 1, wherein the step 8) is performed for 50-150min at a temperature of 125-165 ℃.

10. The method for manufacturing a solid-liquid hybrid capacitor with a fixed amount of electrolyte according to claim 1, wherein the electrolyte in the step 8) is composed of one or more of γ -butyrolactone, sulfolane, polyethylene glycol, triethylamine phthalate, ethylene glycol, phthalic acid and adipic acid.

Technical Field

The invention relates to a large range, in particular to a manufacturing method of a solid-liquid mixed capacitor with electrolyte injected quantitatively.

Background

The production process of the conventional solid-liquid mixed capacitor comprises the following steps:

1) cutting the positive foil, the negative foil and the isolation paper into required widths;

2) respectively nailing the positive and negative guide pins on the positive and negative foils by using a nailing machine, and winding the nailed foils and the isolation paper into elements;

3) spot welding the element on a stainless steel iron strip, and then placing the iron strip with the element spot welded on a carrier for turnover;

4) putting the element into the formation liquid for repairing, and drying after repairing;

5) the dried biscuit is impregnated with conductive high molecular polymer and dried;

6) and impregnating the dried biscuit with electrolyte, wherein the conventional electrolyte impregnation mode is that the whole biscuit filled with a plurality of iron bars is immersed in the electrolyte, and after the biscuit is impregnated with the electrolyte, redundant electrolyte at the bottom of the biscuit is removed in a so-called greasy adhesion mode (the greasy adhesion mode is that redundant electrolyte at the bottom of the biscuit is absorbed by industrial wiping paper). The operation of the step is to prevent the electrolyte in the capacitor from being accumulated too much, which causes serious heating and overlarge internal pressure, and influences the service life of the capacitor;

7) assembling the impregnated product with a rubber plug and an aluminum shell;

8) and aging and charging the assembled semi-finished capacitor.

But has the following disadvantages:

1. the industrial wiping paper absorbing the electrolyte is discarded after being used, so that the industrial wiping paper cannot be reused, and the production cost is increased; the electrolyte absorbed on the industrial wiping paper can not be recycled, which wastes raw materials and increases production cost.

2. After the conductive polymer and the electrolyte are impregnated, the rubber plug is assembled before assembly, and the structure of the element is easy to change due to the external force applied to the element, so that the product characteristics are influenced.

Disclosure of Invention

The invention aims to provide a manufacturing method of a solid-liquid mixed capacitor with electrolyte injected quantitatively, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a manufacturing method of a solid-liquid mixed capacitor with electrolyte injected quantitatively comprises the following steps:

1) cutting the positive foil, the negative foil and the isolation paper;

2) respectively nailing the positive guide pin and the negative guide pin on the positive foil and the negative foil, and then winding the foil and the isolation paper together into an element;

3) assembling the rubber plug on the element;

4) spot welding the elements with the assembled rubber plugs on a stainless steel iron strip;

5) after spot welding, immersing the workpiece into a chemical forming liquid for repairing chemical forming treatment;

6) drying for 40-160min after formation, wherein the drying temperature is 100-;

7) after drying, conducting impregnation for 1-22min by adopting the conductive high molecular polymer under the negative pressure condition, wherein the impregnation atmosphere is 10-90 kPa;

8) then drying for 30-180min at the temperature of 120-;

9) repeating the step 7) and the step 8), wherein the repetition frequency is 2-7 times;

10) quantitatively injecting electrolyte into the aluminum shell, and then putting the elements processed in the steps 1) to 9) into the aluminum shell for assembly;

11) and aging, testing and forming.

As a further scheme of the invention: and in the step 2), a nailing machine is used for nailing the positive guide pin and the negative guide pin on the positive foil and the negative foil respectively.

As a still further scheme of the invention: the temperature of the formation liquid in the step 5) is 50-65 ℃, and the formation time is 5-30 min.

As a still further scheme of the invention: the formation liquid in the step 5) is an ammonium oxalate formation liquid or a boric acid formation liquid.

As a still further scheme of the invention: the drying time in the step 6) is 50-150min, and the drying temperature is 105-125 ℃.

As a still further scheme of the invention: the impregnation atmosphere in the step 7) is 50kPa to 90 kPa.

As a still further scheme of the invention: the impregnation time in the step 7) is 2-20 min.

As a still further scheme of the invention: the conductive high molecular polymer in the step 7) is PEDOT/PSS aqueous dispersion liquid.

As a still further scheme of the invention: the drying in the step 8) is carried out for 50-150min, and the drying temperature is 125-165 ℃.

As a still further scheme of the invention: the electrolyte in the step 8) comprises one or more of gamma-butyrolactone, sulfolane, polyethylene glycol, triethylamine phthalate, ethylene glycol, phthalic acid and adipic acid.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, a certain amount of electrolyte is injected into the aluminum shell according to the size of the element, so that impregnation operation is realized in the aluminum shell, the lean use of the electrolyte can be realized, the working procedures are reduced, the use of the electrolyte and the use of industrial wiping paper are reduced, the production cost is saved, and the production efficiency is improved;

2. the rubber plug is assembled before impregnation, so that the subsequent damage to the element structure is reduced, and the yield and the quality of the product are improved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.