350V electrolytic capacitor and production process thereof

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

Active Publication Date: 2014-03-26
FOSHAN LIMING ELECTRONICS GAOMING
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a 350V electrolytic capacitor and its production process, aiming to solve the technical problem of short load life of the electrolytic capacitor in the prior art under the condition of 105°C (or above)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 350V electrolytic capacitor and production process thereof
  • 350V electrolytic capacitor and production process thereof
  • 350V electrolytic capacitor and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 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.

[0051] In this embodiment, the composition of the electrolyte includes: 40% ethylene glycol, 40% benzyl alcohol, 10% gamma-hydroxybutyrolactone, 1% branched chain polycarboxylic acid ammonium salt, 8.1% azelaic acid EG solution %, o-nitroanisole 0.6%, benzene 0.1%, phosphotungst...

Embodiment 2

[0055] This example is basically the same as Example 1, the difference is that in this example, the composition of the electrolyte includes: ethylene glycol 68.8%, benzyl alcohol 10%, γ-hydroxybutyrolactone 10%, branched Ammonium polycarboxylate 8.9%, azelaic acid EG liquid 1%, o-nitroanisole 0.1%, benzene 1%, phosphotungstic acid 0.1%, molybdic acid 0.1%.

[0056] 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 housing is 13 mm, and the height is 21 mm.

Embodiment 3

[0058] This example is basically the same as Example 1, the difference is that in this example, the composition of the electrolyte includes: ethylene glycol 49.6%, benzyl alcohol 20%, γ-hydroxybutyrolactone 20%, branched chain Ammonium polycarboxylate 7.9%, azelaic acid EG liquid 1%, o-nitroanisole 0.1%, benzene 0.5%, phosphotungstic acid 0.5%, molybdic acid 0.4%.

[0059] 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 housing is 13 mm, and the height is 21 mm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a 350V electrolytic capacitor and a production process thereof. The 350V 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, and electrolyte is added on the insulation electrolytic paper and comprises, in weight percent, 40%-70% of ethylene glycol, 10%-40% of benzyl alcohol, 10%-40% of gamma-hydroxybutyric acid lactone, 1%-10% of branched-chain polycarboxylic acid ammonium salt, 1%-10% of azelaic acid EG(ethylene glycol) liquid, 0.1%-0.9% of ortho-nitroanisole, 0.1%-1% of benzene, 0.1%-1% of phosphotungstic acid and 0.1%-1% of molybdic acid. 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 350V 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/145H01G9/04H01G9/07H01G9/008H01G9/08H01G9/035
Inventor 张锦成黄永福
Owner FOSHAN LIMING ELECTRONICS GAOMING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap