Solid aluminum electrolytic capacitor

Abstract

The invention belongs to the technical field of capacitors, and particularly relates to a solid aluminum electrolytic capacitor. The capacitor comprises a shell, a folding rod, a light emitting diode, a positive pole rod and a negative pole rod. A core package is adhered to the bottom of the shell through an adhesive; the other end of the positive pole rod is fixedly connected with a folding rod; the folding rod is made of two-way shape memory metal; the other end of the negative pole rod is fixedly connected with a folding rod; a rubber pad is arranged at one end of the shell; the center of the outer surface of the rubber pad is fixedly connected with a light emitting diode; the folding rods can be in contact with the corresponding connecting seats after being straightened. According to the invention, the folding rods are matched with the light-emitting diodes, so that the folding rods are in contact with the corresponding connecting seats after being heated and straightened when the solid-state aluminum electrolytic capacitor fails, and therefore, the light-emitting diodes are lightened, and a worker can quickly determine the position of the failed capacitor and carry out troubleshooting; therefore, a worker does not need to measure the capacitors one by one, and the working efficiency of the worker is improved.

Description

technical field [0001] The invention belongs to the technical field of capacitors, in particular to a solid aluminum electrolytic capacitor. Background technique [0002] With the rapid development of electronic information technology, the output of consumer electronic products continues to grow, which promotes the development of the capacitor industry. Capacitors are the original components for storing electricity and electric energy. Usually, their ability to hold charges is referred to as capacitance, which is represented by the letter C. The basic unit of capacity is farad, represented by the letter F; capacitors can store charges and are one of the most commonly used electronic components in electronic equipment. Capacitors are widely used in coupling, filtering, resonance, tuning circuits and control in circuits. The simplest capacitor is composed of plates at both ends and an insulating dielectric in the middle. After electrification, the plates are charged to form a ...

AI Technical Summary

Problems solved by technology

The simplest capacitor is composed of plates at both ends and an insulating dielectric in the middle. After electrification, the plates are charged to form a potential difference. Due to the insulating material in the middle, the entire capacitor is non-conductive, but when the critical voltage of the capacitor is exceeded When the capacitor is broken down, the capacitor can conduct electricity. The biggest difference between solid aluminum electrolytic capacitors and ordinary capacitors is that they use different dielectric materials. The dielectric materials of solid aluminum electrolytic capacitors are usually conductive polymer materials, which can The ESR is greatly reduced and the temperature-frequency characteristics are improved. In the prior art, the failure of the capacitor is mainly caused by the short circuit of the circuit. If the short circuit current is too large, the internal temperature of the capacitor will rise and the internal pressure will increase; when the polarity of the capacitor is reversed, the circuit board will If the voltage is too high, a large current will be formed in the capacitor, which will cause the capacitor to heat up rapidly, cause the internal electrolyte to decompose and fail, and cause the circuit to malfunction. It is necessary for the staff to use a multimeter to check the capacitors in the circuit one by one. The process is time-consuming and laborious, which affects work efficiency.

[0003] There are also some technical solutions for solid aluminum electrolytic capacitors in the prior art. For example, a Chinese patent with application number CN201810309964.2 discloses a solid aluminum Electrolytic capacitor, which is made of positive and negative electrode foils and electrolytic paper wound into a core package, the positive and negative electrode foils are riveted with lead wires, the lead wires on the core package pass through the rubber plug holes and are assembled with the aluminum shell. A conductive polymer grows in the core package, and a polyimide material impregnated protective layer is formed on the cutting parts of the aluminum foil on the upper and lower surfaces of the core package, and the polyimide material impregnated protective layer is formed by winding the core package The upper and lower surfaces are dipped in a soluble polyamic acid solution and heated to 220-320°C for dehydration; this technical solution improves the product’s resistance to high ripple current, and at the same time can effectively protect the position defects of the cutting edge and reduce the leakage of the product. current to improve product reliability; however, this technical solution cannot solve the problem of capacitor failure, and the staff need to use a multimeter to measure and check the capacitors one by one and protect the circuit. This process is time-consuming and laborious, resulting in the limitations of the solution.

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