A metal film filter capacitor for frequency converter

A filter capacitor and metal film technology, applied in the field of filters, can solve problems such as lifespan, and achieve the effects of long service life, high breakdown electric field strength, and low dielectric loss

Active Publication Date: 2018-09-18
东莞怡德电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, aluminum electrolytic capacitors are commonly used in inverters. The biggest problem in the use of this electrolytic capacitor is the problem of life, especially under high temperature conditions.

Method used

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  • A metal film filter capacitor for frequency converter
  • A metal film filter capacitor for frequency converter
  • A metal film filter capacitor for frequency converter

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0025] see figure 1 , a metal film filter capacitor for frequency converters, which includes a core set 100, an encapsulation layer 200 and pins 300, wherein the encapsulation layer 200 is wrapped around the core set 100, that is to say, the core set 100 is entirely wrapped in the encapsulation layer In 200 , pins 300 are connected to the core pack and protrude from the packaging layer 200 .

[0026] see further figure 2 The core set 200 in this embodiment is formed by winding at least one set of film layers 110, and there may be multiple sets of film layers, and multiple sets of film layers are stacked and wound to form a core set. The film layer 110 includes a double-sided metall...

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PUM

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Abstract

The invention provides a metal thin film filtering capacitor for a frequency converter. The filtering capacitor includes a core assembly which is formed by wrapping at least one group of thin film layer which includes a double face metallization polypropylene thin film or a double face metallization polyester thin film and a medium layer, wherein the double face metallization polypropylene thin film or the double face metallization polyester thin film is provided with a metal layer separately on the upper face and the lower face of the polypropylene thin film or the polyester thin film, and one metal layer is an aluminum metal layer and the other metal layer is a zinc metal layer. The filtering capacitor also includes an encapsulated layer which is wrapped in the peripheral side of the core assembly. The filtering capacitor further includes a pin which is connected to the core assembly and extends beyond the encapsulated layer. According to the invention, the metal thin film filtering capacitor for the frequency converter is characterized by high breakdown electric field intensity, long service life, and excellent self-healing property.

Description

technical field [0001] The invention relates to the field of filters, in particular to a metal film filter capacitor for frequency converters. Background technique [0002] Capacitors, usually referred to as capacitance for their ability to hold charges; capacitors, as the name implies, are "charged containers", which are devices that hold charges. Capacitors are one of the electronic components widely used in electronic equipment and are widely used in circuits. DC blocking, coupling, bypass, filtering, tuning loop, energy conversion, control, etc. [0003] The main function of filter capacitors for inverters is filtering. Theoretically (that is, assuming that the capacitor is a pure capacitor), the larger the capacitor, the smaller the impedance and the higher the passing frequency. But in fact, most capacitors exceeding 1μF are electrolytic capacitors, which have a large inductance component, so the impedance will increase when the frequency is high. Sometimes it is se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/14H01G4/32H01G4/33H01G4/232
CPCH01G4/14H01G4/232H01G4/32H01G4/33
Inventor 钱峰
Owner 东莞怡德电子有限公司
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