High-capacity low-loss medium-voltage anode foil and formation process thereof

Abstract

The invention relates to a high-capacity low-loss medium-voltage anode foil and a formation process thereof. The formation process of the high-capacity low-loss medium-voltage anode foil disclosed by the invention comprises the following steps: (1) pretreatment; (2) first-stage formation; (3) second-stage formation; (4) third-stage formation; (5) fourth-stage formation; (6) fifth-stage primary formation; (7) cleaning with ammonia water or phosphoric acid; (8) primary high-temperature treatment; (9) phosphoric acid treatment; (10) fifth-stage secondary formation; (11) secondary high-temperature treatment; (12) fifth-stage tertiary formation; (13) tertiary high-temperature treatment; (14) fifth-stage quaternary formation; and (15) post-treatment. According to the high-capacity low-loss medium-voltage anode foil and the formation process thereof, and under a voltage specification of 200-400 vf, the medium-voltage anode foil for an aluminum electrolytic capacitor is produced by adopting the formation process and simultaneously introducing a part of inorganic and organic acids; and the high-capacity low-loss medium-voltage anode foil has the advantages of high capacity and low loss, a production process is simple to operate, product stability is good, and the process is suitable for industrial batch production.

Description

technical field [0001] The invention belongs to the technical field of anode foils, and in particular relates to a high-capacity, low-loss medium-voltage anode foil and a formation process thereof. Background technique [0002] Capacitors are one of the world's three major passive electronic components (resistors, capacitors and inductors), occupy an important position in the electronic component industry, and are indispensable basic electronic components in electronic circuits. The current common capacitors mainly include electrolytic, organic film, and ceramics. Aluminum electrolytic capacitors are the main type of capacitor products, and their output value accounts for about 50% of all types of capacitors. With the continuous development of science and technology, the technology of aluminum electrolytic capacitors at home and abroad is constantly optimized, perfected and innovated. The application range of aluminum electrolytic capacitors is constantly expanding, and its ...

AI Technical Summary

Problems solved by technology

The medium-pressure forming foil produced by this mixed-acid forming process has a higher capacity and lower hydration, but because the five-stage chemical forming bath has different components and a wide variety of raw materials, it is more complicated for production line control and liquid preparation, and the quality is consistent. The stability cannot be guaranteed, which is not conducive to the stable control of the production line

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