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A 250v electrolytic capacitor and its production process

A technology of electrolytic capacitors and electrolytic paper, applied in the direction of electrolytic capacitors, liquid electrolytic capacitors, capacitors, etc., can solve the problems of short load life and achieve the effects of prolonging life, improving temperature resistance, and increasing overall volume

Active Publication Date: 2017-01-04
FOSHAN LIMING ELECTRONICS GAOMING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a 250V electrolytic capacitor and its production process, aiming to solve the technical problem that the electrolytic capacitor in the prior art has a short load life under the condition of 105°C (or above)

Method used

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  • A 250v electrolytic capacitor and its production process
  • A 250v electrolytic capacitor and its production process
  • A 250v electrolytic capacitor and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Take cathode foil and anode foil: electrocorrode cathode foil and anode foil, oxidize cathode foil and anode foil after electrocorrosion, and form an oxide film on the surface of cathode foil and anode foil; cut cathode foil, anode foil and insulating electrolytic paper, respectively The lead wire is connected with the cathode foil and the anode foil to form the negative electrode lead and the positive electrode lead, and the insulating electrolytic paper, the cathode foil and the anode foil are wound; the electrolyte is added, and the electrolyte is impregnated on the insulating electrolytic paper; the final assembly and crimping are carried out , charging, aging test and parameter detection.

[0056] In this embodiment, the components of the electrolyte include: 40% ethylene glycol, 40% benzyl alcohol, 10% γ-hydroxybutyrolactone, 1% ammonium benzoate, 7.5% azelaic acid EG solution, p-nitrogen 0.9% phenol, 0.1% mannitol, 0.5% adipic acid.

[0057] In this embodiment, ...

Embodiment 2

[0060] This example is basically the same as Example 1, except that in this example, the composition of the electrolyte includes: ethylene glycol 70%, benzyl alcohol 10%, γ-hydroxybutyrolactone 10%, benzoic acid Ammonium 7.9%, azelaic acid EG solution 1%, p-nitrophenol 0.1%, mannitol 0.5%, adipic acid 0.5%.

[0061] In this embodiment, the voltage of the cathode foil is 5V, the capacity of the electrolytic capacitor is 8.2 μF, the diameter of the bottom surface of the casing is 10 mm, and the height is 20 mm.

Embodiment 3

[0063] This example is basically the same as Example 1, except that in this example, the composition of the electrolyte includes: 49% ethylene glycol, 20% benzyl alcohol, 20% gamma-hydroxybutyrolactone, benzoic acid Ammonium 8.9%, azelaic acid EG solution 1%, p-nitrophenol 0.1%, mannitol 0.2%, adipic acid 0.8%.

[0064] In this embodiment, the voltage of the cathode foil is 3V, the capacity of the electrolytic capacitor is 10 μF, the diameter of the bottom surface of the casing is 10 mm, and the height is 20 mm.

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Abstract

The invention discloses a 250V electrolytic capacitor and a production process thereof. The 250V electrolytic capacitor comprises a shell, a core, a sealing plug, a negative wire and a positive wire, the core comprises a cathode foil, an anode foil and insulation electrolytic paper, electrolyte is added on the insulation electrolytic paper, a voltage value of the anode foil is 360VF, voltage of the cathode foil ranges from 1.5V to 5V, the capacity of the electrolytic capacitor ranges from 6.8 microfarads to 47 microfarads, the insulation electrolytic paper comprises two layers of composite insulation electrolytic paper, the density of the electrolytic paper is 70g / m<3>, the thickness of the electrolytic paper is 60 micrometers, the negative wire and the positive wire are manufactured at high temperature, the sealing plug is made of 100% IIR (isobutylene-isoprene rubber) particle materials, the diameter of the bottom surface of the shell ranges from 10mm to 16mm, and the height of the shell ranges from 16mm to 30mm. The electrolytic capacitor is fine in temperature resistance and long in service life, and the load life of the electrolytic capacitor reaches 10000-15000 hours at the temperature of 105 DEG C.

Description

technical field [0001] The invention relates to an electrolytic capacitor, in particular to a 250V electrolytic capacitor and a production process thereof. Background technique [0002] The volume (size) of the electrolytic capacitor is an important factor restricting the performance of the electrolytic capacitor. How to increase the size of the electrolytic capacitor to improve the temperature resistance of the electrolytic capacitor and increase the life of the electrolytic capacitor is the research direction of existing technical personnel. The electrolytic capacitors in the prior art generally have a load life of 1000-2000 hours at 105°C (or above), and these capacitors have poor durability when used in tunnel (highway) lighting, submarine lighting, stadium lighting, advertising lighting, etc. , It needs to be replaced frequently, but due to the complexity of the site, the replacement is difficult and the cost is high. [0003] Therefore, the prior art still needs to be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/145H01G9/035
Inventor 张锦成黄永福
Owner FOSHAN LIMING ELECTRONICS GAOMING