CN102468052A - High-voltage film capacitor with inductive series structure and manufacturing method thereof - Google Patents

Abstract

A high-voltage film capacitor with an inductive series structure and a manufacturing method thereof relate to an electronic component and the manufacturing method. The capacitor is formed by leads, a capacitor core and a body. The capacitor core comprises: dielectric layers, a metalized film and electrodes. There are three layers of the dielectric layers and one electrode is arranged between each two layers of the dielectric layers respectively. The dielectric layers, the metalized film and the electrodes are wound so as to make the capacitor core, wherein the metalized film is the outside piece. Inner ends of the two leads are connected with the electrodes respectively and outer ends of the leads are led out of the body. The manufacturing method comprises the following steps: (1) winding: winding the dielectric layers, the metalized film and the electrodes so as to make the capacitor core; welding the leads on the electrodes and leading out during a winding process; (2) making a bench; (3) hot pressing; (4) encapsulating, printing and testing. By using a current energy-saving lamp with small power, an operation of starting a capacitor is complex; pollution is existed during a metal spraying process; a width of the electrode is small and there are many other problems. By using the capacitor and the method of the invention, the above problems can be solved.

Description

Thoughts cascaded structure high voltage thin film capacitor and manufacturing approach

Technical field

The present invention relates to a kind of electronic devices and components and manufacturing approach.Be specifically related to a kind of high-voltage thin-film capacitor and manufacturing approach of thoughts cascaded structure.

Background technology

From the world and the domestic market film capacitor analysis of selling; Can under the high pressure occasion, use, the miniaturized electric container of high power capacity precision is that following small power energy-saving lamp is first-selected; But have only CBB81 structure and CL11 thoughts type capacitor can reach requirement as starting electric capacity; But CL11 is a paper tinsel formula electrode structure, does not have self-healing feature, and high pressure resistant reliability is low; And be single electric capacity, withstand voltage lifting has very big restriction.The CBB81 structure can meet the demands, but the utilance of electrode is low, complex process, cost is high, the metal spraying welding is drawn and very big pollution is arranged, it is long to go out delivery date, satisfied not present client's demand.From situation international, domestic development.Requiring of the reliability of electricity-saving lamp is increasingly high, and be more and more lower to the price request of product, and therefore reliability and the cost to electronic product proposes requirements at the higher level.

Traditional CBB81 type capacitor arrangement (among the figure: lead-in wire A1, electrode A 2, medium A 4, gilding layer A5) as shown in Figure 1, traditional technological process is: 1: reel, with film, aluminium foil is reeled through sutomatic winding machine and is formed; 2: hot pressing, the capacitor core bag flattens, and gets rid of gas, and the capacitor core bag is qualitative; 3: bag paper (mask) is aided process, for metal spraying is prepared; 4: metal spraying, capacitor core bag two ends metal layer spraying; 5: energize, remove the weak link of capacitors such as fault, metal spraying connection; 6: welding, welding CP line extraction electrode on the gilding layer at capacitor two ends; 7: compile platform, with having welded neat being organized on the platen of capacitor; 8: seal, print, test.Said method technology is loaded down with trivial details, needs more equipment and man-hour, and the metal spraying operation is arranged, and certain metallic pollution is arranged, and production cost is high, and the production cycle is long.Above-mentioned in addition capacitor is a welding lead on gilding layer, exists complex procedures, metal spraying process to have pollution problems; Effective width=the electrode width of above-mentioned electrode for capacitors-aluminium foil overhang-metal film stays the limit amount, causes electrode width narrow like this.

Summary of the invention

The purpose of this invention is to provide a kind of thoughts cascaded structure high voltage thin film capacitor and manufacturing approach, the invention solves existing small power energy-saving lamp start electric capacity complex procedures, metal spraying process exist pollute, electrode width is narrow etc. problem.

Thoughts cascaded structure high voltage thin film capacitor of the present invention is made up of lead-in wire 1, capacitor body 2 and body 3; Capacitor body 2 is arranged at body 3 inside; Described capacitor body 2 comprises dielectric layer 4, metallized film 5 and electrode 6; There are three layers of dielectric layer 4 to stack each other; Between every two layer medium layer 4, be respectively arranged with an electrode 6; The lateral surface of the dielectric layer 4 in an outside has metallized film 5, is that outermost forms capacitor body 2 with dielectric layer 4, metallized film 5 and electrode 6 coilings with metallized film 5; Two lead-in wire 1 inner connection electrode 6 respectively, 1 outer end that goes between causes body 3 outsides.

The manufacturing approach of thoughts cascaded structure high voltage thin film capacitor of the present invention, operate according to following steps:

(1) reels; Three layers of dielectric layer 4 are stacked each other; Between every two layer medium layer 4, place an electrode 6; The lateral surface of the dielectric layer 4 in an outside is provided with metallized film 5, is that outermost is processed capacitor body 2 with dielectric layer 4, metallized film 5 and electrode 6 coilings with metallized film 5; In winding process, will go between on 1 welding electrode 6 and draw;

(2) compile platform, with having welded neat being organized on the platen of capacitor;

(3) hot pressing, the capacitor core bag flattens, and gets rid of gas, and the capacitor core bag is qualitative;

(4) seal, print, test.

Capacitor high-frequency loss of the present invention is little, and it is little self to heat up, and temperature capacity is strong, and dielectric behavior is stable, also must have stronger moistureproof ability and resisting temperature impact capacity, and pin is apart from easy for installation flexibly, again operate as normal under 100 ℃ of-110 ℃ of operational environments for a long time.This kind capacitor small size, low, highly reliable, the safety and environmental protection of cost can be used under the occasion of high pressure, big electric current.

The comparison of the present invention and prior art: 1: lead-out wire is different: prior art is that the metal spraying welding is drawn, and the present invention is that wire bonds is drawn on electrode, reduces operation, does not have metal spraying, does not pollute.2: the effective rate of utilization of electrode is different: the effective width=electrode width of prior art electrode-aluminium foil overhang-metal film stays limit amount, the effective width=electrode width of electrode of the present invention.

Description of drawings

Fig. 1 is the structural representation of background technology of the present invention;

Fig. 2 is the outside structural representation of embodiment of the present invention;

Fig. 3 is the end view of Fig. 2;

Fig. 4 is the sectional view of capacitor body.

Symbol description among the figure: lead-in wire 1, capacitor body 2, body 3, dielectric layer 4, metallized film 5, electrode 6.

Embodiment

Below in conjunction with accompanying drawing and with illustrated embodiments the present invention is done detailed explanation.

Consult Fig. 2-Fig. 4, thoughts cascaded structure high voltage thin film capacitor is made up of lead-in wire 1, capacitor body 2 and body 3; Capacitor body 2 is arranged at body 3 inside; Described capacitor body 2 comprises dielectric layer 4, metallized film 5 and electrode 6; There are three layers of dielectric layer 4 to stack each other; Between every two layer medium layer 4, be respectively arranged with an electrode 6; The lateral surface of the dielectric layer 4 in an outside has metallized film 5, is that outermost forms capacitor body 2 with dielectric layer 4, metallized film 5 and electrode 6 coilings with metallized film 5; Two lead-in wire 1 inner connection electrode 6 respectively, 1 outer end that goes between causes body 3 outsides.

The manufacturing approach of thoughts cascaded structure high voltage thin film capacitor, operate according to following steps:

(1) reels; Three layers of dielectric layer 4 are stacked each other; Between every two layer medium layer 4, place an electrode 6; The lateral surface of the dielectric layer 4 in an outside is provided with metallized film 5, is that outermost is processed capacitor body 2 with dielectric layer 4, metallized film 5 and electrode 6 coilings with metallized film 5; In winding process, will go between on 1 welding electrode 6 and draw;

(2) compile platform, with having welded neat being organized on the platen of capacitor;

(3) hot pressing, the capacitor core bag flattens, and gets rid of gas, and the capacitor core bag is qualitative;

(4) seal, print, test.

Microminiature film high-voltage capacitor, the high-frequency loss of this kind capacitor is little, and it is little self to heat up, and temperature capacity is strong, and dielectric behavior is stable, also must have stronger moistureproof ability and resisting temperature impact capacity, and pin is apart from flexibly, and is easy for installation.Operate as normal under 100 ℃ of-110 ℃ of operational environments for a long time again.This kind capacitor volume is little, reliability is high, cost is low, the capacity precision high, safety and environmental protection, can under the occasion of high pressure, big electric current, use.

Capacitor good reliability of the present invention, volume is little, and internal temperature rise is little; High frequency characteristics is good, and loss is little, and insulation resistance is high; High temperature resistant, high frequency, can bear heavy current impact, and lead spacing has only 5.0mm, can satisfy the small power energy-saving lamp highly reliable film capacitor requirement.

Above embodiment is more preferably embodiment a kind of of the present invention, and common variation that those skilled in the art carry out in present technique scheme scope and replacement should be included in protection scope of the present invention.

Claims (2)

1. thoughts cascaded structure high voltage thin film capacitor is characterized in that, is made up of lead-in wire (1), capacitor body (2) and body (3); Capacitor body (2) is arranged at body (3) inside; Described capacitor body (2) comprises dielectric layer (4), metallized film (5) and electrode (6); There are three layers of dielectric layer (4) to stack each other; Between every two layer medium layer (4), be respectively arranged with an electrode (6); The lateral surface of the dielectric layer in an outside (4) has metallized film (5), is that outermost forms capacitor body (2) with dielectric layer (4), metallized film (5) and electrode (6) coiling with metallized film (5); The inner connection electrode (6) respectively of two lead-in wires (1), lead-in wire (1) outer end causes body (3) outside.

2. the manufacturing approach of thoughts cascaded structure high voltage thin film capacitor is characterized in that, operates according to following steps:

(1) reels; Three layers of dielectric layer (4) are stacked each other; Between every two layer medium layer (4), place an electrode (6); The lateral surface of the dielectric layer in an outside (4) is provided with metallized film (5), is that outermost is processed capacitor body (2) with dielectric layer (4), metallized film (5) and electrode (6) coiling with metallized film (5); (1) welding electrode (6) that in winding process, will go between is gone up and is drawn;

(2) compile platform, with having welded neat being organized on the platen of capacitor;

(3) hot pressing, the capacitor core bag flattens, and gets rid of gas, and the capacitor core bag is qualitative;

(4) seal, print, test.

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