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Microminiature rapid charging special-purpose aluminium electrolytic capacitor

A technology of aluminum electrolytic capacitors and fast charging, applied in capacitor parts, capacitor shells/packages, etc., can solve the problems of aluminum electrolytic capacitors failing to meet requirements, improve ripple resistance and lightning resistance, reduce size, The effect of reducing the ESR value

Inactive Publication Date: 2016-12-21
HUNAN AIHUA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current fast chargers are developing rapidly. At the same time of replacement, higher requirements are put forward for aluminum electrolytic capacitors in terms of miniaturization, high withstand voltage, lightning strike resistance, and corrosion resistance. However, the current aluminum electrolytic capacitors cannot meet the requirements.

Method used

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  • Microminiature rapid charging special-purpose aluminium electrolytic capacitor
  • Microminiature rapid charging special-purpose aluminium electrolytic capacitor

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Such as figure 1 with figure 2 The shown ultra-small aluminum electrolytic capacitor for fast charging includes a shell, a core package and a rubber plug. The core package is sealed in the shell by a rubber plug. The rubber plug includes IIR butyl rubber, carbon black, clay and resin. The thickness is 1.8-4.0mm, and the hardness of the rubber plug is between 85-90. The rubber stopper is an anti-corrosion rubber stopper cleaned by a hydrophobic agent, and the hydrophobic agent includes silicone oil or PEG oil.

[0023] In this embodiment, the core package includes a positive electrode foil and a negative electrode foil, and the edges of the positive electrode foil and the negative electrode foil are staggered. The outer shell and the core pack are fixed by an inner recessed groove on the outer shell, and the outer layer of the core pack is wrapped by a multilayer adhesive tape.

[0024] In this embodiment, the electrolyte includes 64 parts ethylene glycol, 12 parts diethyl...

Embodiment 2

[0027] In this embodiment, the electrolyte includes 50 parts of ethylene glycol, 15 parts of γ-butyrolactone, 3 parts of water, 3 parts of ammonium dodecanoate, 4.5 parts of ammonium phthalate, 4 parts of ammonium pentaborate, 1.8 parts of decanoate Ammonium diacid, 1.5 parts of citric acid, 2.5 parts of ammonium hypophosphite, 6 parts of organic nano silicon solution, 6.5 parts of polyglycerol polyoxyethylene ether, 0.8 parts of p-nitrobenzyl alcohol. The conductivity of the electrolyte of this embodiment is 2400 μs / cm, the flash voltage is 595V, and the pH is 6.0. The other parts of this embodiment are the same as the first embodiment.

Embodiment 3

[0029] The electrolyte of this embodiment includes 50 parts of ethylene glycol, 20 parts of polyethylene glycol, 2.5 parts of water, 2.5 parts of diethylene glycol, 3 parts of ammonium dodecanoate, 5.5 parts of ammonium pentaborate, 0.8 parts of 2,5- Dihydroxybenzoic acid, 5.5 parts of organic nano silicon solution, 2 parts of ammonium hypophosphite, 8 parts of diglycerol polyoxyethylene ether, and 0.6 parts of p-nitrobenzyl alcohol. The conductivity of this embodiment is 2500 μs / cm, the flash voltage is 512V, and the PH is 6.2. The other parts of this embodiment are the same as the first embodiment.

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Abstract

The invention provides a microminiature rapid charging special-purpose aluminium electrolytic capacitor which comprises a shell, a core bag and a rubber plug. The core bag is sealed in the shell through the rubber plug. The core bag contains electrolyte which comprises a solvent, an inorganic acid ammonium salt, an organic acid ammonium salt, and a hydrogen elimination agent. The inorganic acid ammonium salt is ammonium borate or ammonium pentaborate or the mixture of the ammonium borate or the ammonium pentaborate. The organic acid ammonium salt comprises one or more of ammonium sebacate, ammonium azelate, diammonium phthalate, and dodecyl ammonium carboxylate. The hydrogen elimination agent comprises one or more of a p-Nitrobenzyl alcohol, a p nitroanisole and p-nitrobenzoic acid. The conductivity of the electrolyte in the invention is between 2.4 ms / cm to 2.8ms / cm, the ESR value of a product can be effectively reduced, thus the ripple resistance and lightning strike resistance ability of the product are improved greatly, the flash fire voltage is above 490V, in a condition of high voltage, the breakdown of electrolytic paper caused by flash fire of the electrolyte does not appears, and thus the voltageproof performance of the product is ensured.

Description

Technical field [0001] The invention relates to an aluminum electrolytic capacitor, in particular to an ultra-small aluminum electrolytic capacitor special for rapid charging. Background technique [0002] With the accelerating pace of modern life, smart phones consume power quickly. In the absence of breakthrough progress in battery power, the charging speed and volume requirements are getting higher and higher. The current rapid chargers are developing rapidly. The replacement and replacement of aluminum electrolytic capacitors have put forward higher requirements in terms of miniaturization, high withstand voltage, lightning resistance, and corrosion resistance. However, current aluminum electrolytic capacitors cannot meet the requirements. Summary of the invention [0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an ultra-small aluminum electrolytic capacitor with superior performance and applied t...

Claims

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Application Information

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IPC IPC(8): H01G9/08
CPCH01G9/08
Inventor 杨治安陶艳军
Owner HUNAN AIHUA GRP
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