Large-current axial high-frequency resonant capacitor and manufacturing method thereof

A high-frequency resonance and capacitor technology, applied in the field of capacitors, can solve the problems of difficult heat dissipation in the center of capacitors, short service life, and easy failure, so as to improve self-healing performance, increase current resistance, and reduce virtual welding. The effect of the failure rate

Pending Publication Date: 2022-04-15
佛山市肯博电子有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The Chinese patent document No. CN2899063Y disclosed a high-frequency resonant heating capacitor on May 9, 2007, which includes a shell, electrodes and a capacitor core group composed of several capacitor unit cores connected together. It is equipped with insulating filler and placed in the shell. The capacitor has a dry structure. A cooler is buried inside the capacitor. The two leading ends of the cooler are connected to the external cooling pipe. Heat dissipation, but in the actual use process, the heat in the center of the capacitor is difficult to dissipate, and the temperature rises, causing it to be prone to failure, burning and other negative effects, and the service life is short, which brings certain adverse effects to people's use

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
  • Large-current axial high-frequency resonant capacitor and manufacturing method thereof
  • Large-current axial high-frequency resonant capacitor and manufacturing method thereof
  • Large-current axial high-frequency resonant capacitor and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0063] see Figure 1-Figure 6 , the high-current axial high-frequency resonant capacitor includes a capacitor core 1 and a shell 3, and the capacitor core 1 is composed of a double-sided metal film, a single-sided metal film, and is arranged between the double-sided metal film and the single-sided metal film. The intermediate film 10 between the surface metal films is wound, and a heat conduction hole 23 is arranged inside it, and a gold-sprayed layer 2 is sprayed on the surface; the shell 3 is arranged on the outside of the capacitor core 1, and is arranged between each other. There is sealing potting material 4.

[0064] The double-sided metal film includes a first thin film medium 11 and a double-sided conductive metal layer 12 distributed on both sides of the first thin film medium 11; Side 13.

[0065] The single-sided metal film includes a second thin film medium 14 and a single-sided conductive metal layer 15 distributed on one side of the second thin film medium 14; ...

no. 2 example

[0103] see Figure 7-Figure 10 , the high-current axial high-frequency resonant capacitor and its manufacturing method are different from the first embodiment in that: the inner side of the lead nut 5 is axially linearly extended and arranged in the heat conduction hole 23, the A nut ring-shaped side 51 extends from the outside of the lead-out nut 5 , and is covered by the nut ring-shaped side 51 on the end face of the capacitor core 1 .

[0104] Specifically, the internal extension size of the lead-out nut 5 is consistent with the size of the inner hole of the winding mandrel, and the reel with an inner diameter of 30 is used for winding. The outer diameter of the lead-out nut 5 is more than 50, and the resonance current can reach 150-350A (without water cooling ) and 400-600A (when water-cooled), the mandrel can be selected according to the size requirements.

[0105] The lead-out nut 5 and the nut ring-shaped side 51 are directly processed and formed by copper blocks at on...

no. 3 example

[0108] see Figure 11-Figure 14 , the high-current axial high-frequency resonant capacitor and its manufacturing method are different from the first embodiment in that: the inner side of the lead nut 5 is axially linearly extended and arranged in the heat conduction hole 23, the A nut annular side 51 extends from the outside of the lead-out nut 5 , and a metal piece 8 is connected through the nut annular side 51 , and is cooperating with the metal piece 8 to cover the capacitor core 1 .

[0109] Specifically, the periphery of the shell 3 and the metal piece 8 is circular; the periphery of the nut ring side 5 is provided with a threaded part, the metal piece 8 is an aluminum block or a copper block, and its inner ring is also set There is a threaded part, which just fits closely with the threaded part of the nut ring side 5, and the lead-out nut 5 and the metal part 8 wrap at least part of the end surface and the outside of the capacitor core 1 at the same time. The outer midd...

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

No PUM Login to View More

Abstract

The invention relates to a large-current axial high-frequency resonant capacitor and a manufacturing method thereof, the large-current axial high-frequency resonant capacitor comprises a capacitor core and a shell, the capacitor core is formed by winding a double-sided metal film, a single-sided metal film and an intermediate film arranged between the double-sided metal film and the single-sided metal film, a metal spraying layer is sprayed on the surface of the substrate; the housing is arranged on the outer side of the capacitor core, and a sealing pouring material is arranged between the housing and the capacitor core. According to the structure, the voltage resistance field intensity and the self-healing performance of the capacitor can be improved, the size is smaller, the number of welding points for parallel connection of capacitor cores is reduced, the fault rate of insufficient welding of the capacitor is reduced, meanwhile, the use safety of the capacitor can be effectively improved, and flashover generated by creepage is avoided.

Description

technical field [0001] The invention relates to the field of capacitors, in particular to a high-current axial high-frequency resonant capacitor and a manufacturing method thereof. Background technique [0002] The Chinese patent document No. CN2899063Y disclosed a high-frequency resonant heating capacitor on May 9, 2007, which includes a shell, electrodes and a capacitor core group formed by connecting several capacitor unit cores. It is equipped with insulating filler and placed in the shell. The capacitor has a dry structure. A cooler is buried inside the capacitor. The two leading ends of the cooler are connected to the external cooling pipe. Heat dissipation, but in the actual use process, the heat in the center of the capacitor is difficult to dissipate, and the temperature rises, causing it to be prone to negative effects such as failure and combustion, and the service life is short, which brings certain adverse effects to people's use. Therefore, further improvement...

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 & AuthorityApplications(China)
IPC IPC(8): H01G4/32H01G13/02
Inventor肖俊王勇平
Owner佛山市肯博电子有限公司