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Aluminum Electrolytic Capacitor Operating Temperature Range, Rated Voltage
- Jul 07, 2017 -

Aluminum Electrolytic Capacitor are one of the indispensable components of electronic products. Aluminum Aluminum Electrolytic Capacitor are widely used in information electronic equipment, instruments, electromechanical, home appliances and other electronic products because of their excellent performance, large capacity, low cost, easy processing, easy to use and so on.

 For the study of aluminum Aluminum Electrolytic Capacitor, there were 78 patent applications since the second half of 2016. Among them, the invention patent applications, there are 54, accounting for 69% of all applications. (95%), tertiary institutions contributed three patent applications (4%), and one (1%) was a personal application for the status of the applicant, The

1. Different characteristics of the electrolytic capacitor

In the search period, aluminum electrolytic capacitor technology patent application of the largest amount of aluminum electrolytic capacitor core package, electrolyte, which in turn with a special performance and structure of the aluminum electrolytic capacitor patent applications accounted for the highest, involving high pressure laminated aluminum Aluminum Electrolytic Capacitor, vibration-resistant aluminum Aluminum Electrolytic Capacitor, ultra-small fast charge aluminum Aluminum Electrolytic Capacitor, ultra-thin large-capacity laminated aluminum Aluminum Electrolytic Capacitor, ultra-low temperature aluminum Aluminum Electrolytic Capacitor.

2. Electrolyte

Electrolyte is the main component of the capacitor, the role of Aluminum Electrolytic Capacitor play a key role in determining the electrolytic capacitor operating temperature range, rated voltage, loss factor, impedance, rated ripple current, capacitor life. Improving the Electrolyte is the Key to Improve the Capacitance Performance of Aluminum Electrolytic Capacitor.

The aluminum electrolytic capacitor is made of an anodic aluminum foil formed by electrochemical etching to form an oxide film, a corroded cathodic aluminum foil, which is then wound with an electrolytic paper and then impregnated with a working electrolyte and then sealed in an aluminum shell. In this paper, aluminum Aluminum Electrolytic Capacitor for a variety of tests and research, including: capacitor electrolyte composition analysis, explosion simulation experiments, computer simulation infrared imaging, gas composition and source analysis, analysis of aluminum electrolytic capacitor explosion of the possible mechanism.

Commonly used aluminum electrolytic capacitor structure by the capacitor core group, aluminum, sealing rubber and lead composition. Wherein the functional part comprises a capacitor core group and the composition comprises an anode metal foil, an electrolyte cathode and a cathode aluminum foil. The anodic aluminum foil is subjected to electrochemical etching to form a 0.01-1 μm thick Al2O3 film as the dielectric of the capacitor, which has a unidirectional rectification characteristic similar to that of the PN junction. Therefore, the electrolytic capacitor has polarity, such as reverse polarity, which will cause the internal heat to cause the capacitor Failure. According to its physical state, the electrolyte cathode is divided into liquid electrolyte, gel (or paste) electrolyte and solid electrolyte.