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Manufacturing process of subminiature-structure capacitor

A manufacturing process and capacitor technology, which is applied in the field of ultra-small foil series structure film capacitor products, can solve the problems of insufficient service life, large contact loss, etc., achieve strong moisture resistance, temperature shock resistance, and low high frequency loss , the effect of high capacity accuracy

Inactive Publication Date: 2014-01-01
FOSHAN CITY XINYUAN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The contact loss is large, and the service life cannot meet the requirements

Method used

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  • Manufacturing process of subminiature-structure capacitor
  • Manufacturing process of subminiature-structure capacitor
  • Manufacturing process of subminiature-structure capacitor

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Embodiment Construction

[0016] The present invention will be described in detail below with the best embodiment.

[0017] like Figure 1-3 As shown, the manufacturing process of ultra-small structure capacitors includes the following processes: winding, hot pressing, gold spraying, welding, and encapsulation; using the existing 3mm thick aluminum foil for 7.5 pitches as electrodes, using three-layer electrodes , a layer of dielectric is set under each electrode, and the top layer of electrodes and the middle layer of electrodes protrude from the edge of the dielectric respectively; the end surface of the electrode is connected with the aluminum foil by the gold spray layer, and the lead wire is welded to the end surface of the gold spray layer; the medium and the electrode roll Winding and powder epoxy encapsulation to make capacitors.

[0018] The metallized film coating and aluminum foil are used as electrodes; the metallized film is used as a medium. It has self-healing characteristics and stron...

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Abstract

The invention discloses a manufacturing process of a subminiature-structure capacitor, and relates to a subminiature foil-type series-connection-structure thin-film capacitor and a manufacturing process of the subminiature foil-type series-connection-structure thin-film capacitor. The manufacturing process comprises the following steps of coiling, hot pressing, metal spraying, welding and packing, existing 3-mm-thick aluminum foils for 7.5 pitches are adopted as electrodes, three layers of electrodes are adopted, a layer of media is arranged under each electrode, the uppermost layer of electrode and the middle layer of electrode extend out of the edges of the media respectively, a metal spraying layer is arranged on the end surface of each electrode to be connected with the aluminum foil, a lead is welded to the metal spraying layers at the end surfaces and led out, the media and the electrodes are coiled and packaged with powder epoxy, and the capacitor is manufactured. The manufacturing process of the subminiature-structure capacitor is mainly used for overcoming the defects. The structure of the electrodes is changed, one layer of media is additionally arranged under each electrode, the wide aluminum foils serve as the electrodes, the distance between every two aluminum foils is reduced, the effective area is increased, utilization rate is improved, and the specific volume is increased.

Description

technical field [0001] The invention relates to an ultra-small foil-type series structure film capacitor product and its manufacturing process. Specifically, it is used for starting energy-saving lamps for low-loss, long-life, low-power, high-voltage, and low-power lighting. ultra-small capacitors. Background technique [0002] At present, starting capacitors for lighting are mainly foil-type series capacitors. This type of capacitor is an internal pass structure, with aluminum foil and metallized polypropylene film as the electrode, and polypropylene film as the dielectric. High withstand voltage, strong overcurrent capability, low high frequency loss. The electrode distance of this type of capacitor is in the form of a margin in the middle of the two aluminum foil electrodes, separating the electrodes. [0003] Conventional metallized 5-pin-pitch 3-string structure, the volume can meet the installation requirements of low-power energy-saving lamps; because the electrode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/33
CPCY02E60/13
Inventor 薛永
Owner FOSHAN CITY XINYUAN ELECTRONICS CO LTD
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