Metallized polypropylene film capacitor for induction cooker

A polypropylene film and metallized film technology, used in the field of capacitors, can solve problems such as limited application and inability to meet requirements, and achieve the effects of strong self-healing, low contact resistance, and strong ability to withstand effective current and impact.

Active Publication Date: 2018-03-20
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the environmentally friendly transformer oil prepared by the invention has a flash point of about 215°C, which cannot meet the requirements of being a flame retardant oil, which limits its application in places with high fire resistance.
Secondly, the anti-oxidation stability of the environment-friendly transformer oil needs to be further improved

Method used

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  • Metallized polypropylene film capacitor for induction cooker
  • Metallized polypropylene film capacitor for induction cooker
  • Metallized polypropylene film capacitor for induction cooker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a metalized polypropylene film capacitor for an induction cooker includes an upper insulating cover 1, a lower insulating cover 2, a capacitor core 3, a gold spray layer 5, a conductive post 9 and a lead terminal 10, an upper insulating cover 1 and a lower insulating cover The surface of the cover 2 is treated with sandblasting and oxidation protection, which can increase the safety performance and service life of the capacitor. The upper insulating cover 1 and the lower insulating cover 2 are fixedly connected by the explosion-proof plate 4, the lower insulating cover 2 and the explosion-proof plate 4 are combined to house the capacitor core 3, and the gap between the lower insulating cover 2 and the explosion-proof plate 4 is provided with impregnant 6. The impregnant 6 completely impregnates the capacitor core 3. The inner surface of the lower insulating cover 2 is provided with a buffer layer 7, the thickness of the buffer layer 7 is 3~4mm,...

Embodiment 2

[0045] A metallized polypropylene film capacitor for induction cooker. The structure is roughly the same as that of Example 1, except that:

[0046] Impregnant 6 is made of the following raw materials: 31 parts by weight of monobenzyl toluene, 21 parts of 1,1-diphenylethane, 21 parts of vegetable oil, 16 parts of glycerin, 16 parts of nano powder, 0.35 parts of antioxidant, 0.6 part of silane coupling agent, 0.3 part of metal deactivator.

[0047] Among them, vegetable oil is a mixture of rapeseed oil and camellia seed oil, the weight ratio of rapeseed oil: camellia seed oil is 4.5:5.5; the nano powder is a mixture of aluminum oxide, magnesium oxide and zinc oxide, aluminum oxide, magnesium oxide and oxide The particle size of zinc is 50~80nm, the weight ratio of aluminum oxide: magnesium oxide: zinc oxide is 3:2:3; antioxidant is rosemary antioxidant; silane coupling agent KH560; metal passivator is three Azocyclohexene.

[0048] Adding a metal passivator can suppress various effe...

Embodiment 3

[0054] A metallized polypropylene film capacitor for induction cooker. The structure is roughly the same as that of Example 1, except that:

[0055] Impregnant 6 is made of the following raw materials by weight: 34 parts of monobenzyl toluene, 23 parts of 1,1-diphenylethane, 23 parts of vegetable oil, 17 parts of glycerin, 17 parts of nano powder, 0.4 part of antioxidant, 0.65 parts of silane coupling agent.

[0056] Among them, vegetable oil is a mixture of rapeseed oil and camellia seed oil, the weight ratio of rapeseed oil: camellia seed oil is 5:5; the nano powder is a mixture of aluminum oxide, magnesium oxide and zinc oxide, aluminum oxide, magnesium oxide and oxide The particle size of zinc is 50~80nm, the weight ratio of aluminum oxide: magnesium oxide: zinc oxide is 3:2:3; the antioxidant is tea polyphenol; the silane coupling agent is KH570.

[0057] The preparation method of the above-mentioned impregnant 6 includes the following steps:

[0058] (1) Dissolve the nanopowder...

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PUM

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Abstract

The invention discloses a metalized polypropylene film capacitor for an induction cooker. The metalized polypropylene film capacitor comprises an upper insulating cover, a lower insulating cover, a capacitor core, metal spraying layers, conducting posts and lead-out terminals, wherein the upper insulating cover is fixedly connected with the lower insulating cover through an explosion-proof board; an impregnant is arranged in a gap between the lower insulating cover and the explosion-proof board; a buffer layer is arranged on the inner surface of the lower insulating cover; an explosion-proof layer is arranged on the inner surface of the buffer layer; the capacitor core is formed by winding two superimposed metalized film layers; each metalized film layer comprises a polypropylene film; a metal aluminum layer is evaporated on each polypropylene film as an active region of an electrode in a high vacuum environment; a pure-zinc thickened region layer is evaporated on the edge of each active region in a thickened manner; wavy edges are arranged at the outer sides of each polypropylene film, the corresponding active region and the corresponding thickened region; the metal spraying layers are arranged at two ends of the capacitor core; and lead-out terminals are arranged on the upper insulating cover. The metalized polypropylene film capacitor is stable in performance, good in temperature tolerance, long in storage time, high in antioxidant capacity and small in high-frequency loss.

Description

Technical field [0001] The invention relates to a capacitor, in particular to a metallized polypropylene film capacitor for an induction cooker. Background technique [0002] Capacitors are the main electronic components that constitute electronic circuits. Capacitors are widely used in power systems to compensate for reactive power. The original capacitor structure is to fix three-phase capacitor units together and enclosed in a box. When the electrical appliance is used for a long time, the capacitor current will increase, the temperature will rise, and the material inside the capacitor will rapidly expand and cause the capacitor to explode. Therefore, it is necessary to design the capacitor for explosion-proof. [0003] With the development of science and technology, the requirements for the safety performance of electrical components in the industry are continuously increasing. As a common electrical component, the important role of the explosion-proof safety structure of film ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/005H01G4/14H01G4/224H01G4/236H01G4/252H01G4/32H01G4/33H01G2/14
CPCH01G2/14H01G4/005H01G4/14H01G4/224H01G4/236H01G4/252H01G4/32H01G4/33
Inventor 禹建丽苗满香张国辉
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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