Solid electrolyte aluminium electrolytic capacitor and method for manufacturing same

Abstract

The invention discloses a solid electrolyte aluminium electrolytic capacitor, wherein a core wrap is connected with a positive terminal and a negative terminal, the external surfaces of the positive and the negative terminals are plated with silver coatings, and the method for manufacturing the capacitor comprises the following steps: 1) the external surfaces of the positive and the negative terminals are plated with silver coatings; 2) an electrolytic paper is interposed between an anode formed aluminium foil and a cathode foil and is wound to be core wrap, and the cathode foil faces the outer side, wraps the electrolytic paper and is fixed by a high-temperature tape; 2) the core wrap is soaked into formed liquid to undergo formation repair; 3) the core wrap is placed in an oven to undergo the carbonating; 4) the core wrap is subjected to the formation repair treatment; 5) the core wrap is dried; 6) the core wrap is respectively placed into a monomer and an oxidizing agent to be impregnated, heated and aggregated; and 7) a rubber cover is assembled on the core wrap, the core wrap is assembled in an aluminium shell, sealed and aged into a product. Because the terminals adopt silver coating instead of tinning, tin melting is avoided during the high-temperature carbonating, a higher-temperature carbonating mode can be adopted, so a better carbonating effect can be obtained within shorter time, energy resources are saved, and the cost is reduced.

Description

technical field [0001] The invention relates to a manufacturing method of an electrolytic capacitor, in particular to a solid electrolyte aluminum electrolytic capacitor and a manufacturing method thereof. Background technique [0002] Compared with ordinary liquid electrolytic capacitors, solid electrolytic capacitors have outstanding electrical properties, such as low equivalent series resistance (ESR), high ripple current resistance, long service life, and stable performance. With the continuous upgrading of electronic products and the continuous improvement of their functions and performance, the requirements for high-frequency characteristics of capacitors are getting higher and higher. People reduce the ESR of solid electrolytic capacitors in various ways to meet the high-frequency characteristics of capacitors. . [0003] Moreover, copper-clad iron guide pins are generally used in the solid electrolytic capacitor industry, or copper wires are coated with a coating th...

AI Technical Summary

Problems solved by technology

[0003] Moreover, copper-clad iron guide pins are generally used in the solid electrolytic capacitor industry, or copper wires are coated with a coating that enhances solderability. Due to the low melting point of tin, there are two ways to carbonize, one is to carry out at low temperature Carbonization, usually at around 250°C. In order to ensure the carbonization effect, such a carbonization process often obtains the required carbonization effect by repeating the number of times. This process is relatively inefficient and consumes a lot of energy. Another way is to carbonize at high temperature. , usually carbonized at 350-450°C, so that a relatively small number of times can be used to obtain a better carbonization effect, but during the carbonization process, the tin-plated money-conducting tin layer is completely damaged, and the product must be re-tinned after the product is made. Tin plating increases the product process and cost, and the same process of tin plating also has different damages to the product

Images