Electrolytic capacitor

An electrolytic capacitor and electrolyte technology, applied in the field of capacitors, can solve the problems of poor performance parameters and insufficient life, and achieve the effects of long life, high working voltage and excellent initial electrical performance parameters.

Active Publication Date: 2021-03-30
SHENZHEN CAPCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of poor initial electrical performance parameters and insufficient service life of 350-500V high-voltage electrolytic capacitors prepared from electrolytes using γ-butyrolactone compounds as the main solvent, the invention provides an electrolytic capacitor

Method used

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Examples

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Embodiment 1

[0083] This embodiment is used to illustrate the electrolytic capacitor disclosed in the present invention and its preparation method, including the following steps:

[0084] The electrolyte and electrolytic paper were configured using the components shown in Example 1 in Table 1, and the aluminum anode, cathode, electrolytic paper and electrolyte were assembled to obtain an aluminum electrolytic capacitor.

Embodiment 2

[0086] This embodiment is used to illustrate the electrolytic capacitor disclosed in the present invention and its preparation method, including the following steps:

[0087] The electrolyte and electrolytic paper were configured using the components shown in Example 2 of Table 1, and the aluminum anode, cathode, electrolytic paper and electrolyte were assembled to obtain an aluminum electrolytic capacitor.

Embodiment 3

[0089] This embodiment is used to illustrate the electrolytic capacitor disclosed in the present invention and its preparation method, including the following steps:

[0090] The components shown in Example 3 of Table 1 were used to configure the electrolyte and electrolytic paper, and the aluminum anode, cathode, electrolytic paper and electrolyte were assembled to obtain an aluminum electrolytic capacitor.

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Abstract

The invention provides an electrolytic capacitor. The electrolytic capacitor comprises an electrolyte and a core package soaked in the electrolyte, the sparking voltage of the electrolyte is greater than 400V, the electrolyte comprises a main solvent and a main solute, the main solvent comprises a lactone compound, and the main solute comprises imidazolinium cations and organic carboxylic acid anions; the total carbon content of the organic carboxylic acid anions is 8-26, and the structural formula of the organic carboxylic acid anions is shown in the description, wherein P is a main carbon chain of 1-25 carbons, and the main carbon chain contains or does not contain unsaturated bonds; R1, R2, R3 and R4 are respectively and independently selected from hydrogen, benzene rings, alkyl benzenerings, nitrobenzene rings, carboxyl or straight carbon chains with 1-10 carbons or carbon chains with branched chains, and one or two of R1, R2, R3 and R4 are selected from carboxyl; the core packagecomprises an anode, a cathode and electrolytic paper, the tightness of the electrolytic paper is 0.30-0.75 g/cm <3>, and the thickness of the electrolytic paper is 40-120 microns; and the working voltage of the electrolytic capacitor is 350 to 500 V. The electrolytic capacitor provided by the invention widens the working temperature range and has the characteristic of high voltage resistance.

Description

technical field [0001] The invention belongs to the technical field of capacitors, in particular to an electrolytic capacitor. Background technique [0002] Since the development of aluminum electrolytic capacitors, a mature industrial chain has been formed. Its products are widely used in refrigerators, air conditioners, televisions, radios, etc. in daily household appliances, as well as transformers and charging piles in industrial fields. The application of aluminum capacitors is significantly affected by temperature, and the service life will be shortened if the temperature is too high or too low. At present, manufacturers in the aluminum capacitor market are actively looking for countermeasures in order to improve the service life of products in high-temperature or low-temperature environments. Improvements in the direction of electrolytic paper materials for aluminum capacitors, combination methods, and specific volume of aluminum foil are not obvious. [0003] The al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/02H01G9/035H01G9/145
CPCH01G9/02H01G9/035H01G9/145
Inventor 姜希松赖华定王明杰贾云姜鹏禤裕汉
Owner SHENZHEN CAPCHEM TECH
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