New Polymer Dielectric For High Energy Density Film Capacitors

PublishTime：2021-07-19

●Abstract
■A new dielectric film has been developed that greatly increases the energy density capability of plastic film capacitors. This film has been developed over the past four years by a consortium consisting of Lithium Power Technologies, CDE Corp., Dupont Teijin Films (DTF), Case Western Reserve University, and Ohio Aerospace Institute in an Advanced Technology Program funded by the Department of Commerce. We are now entering the commercialization stage of this project. Plastic film capacitors have been the capacitor of choice for many power electronics, power conditioning, and pulse power applications such as motors, lighting and portable defibrillators because of their low dissipation factor (DF), excellent high-frequency response, high insulation resistance (IR), self-healing ability, and high-voltage capabilities. Existing capacitor technologies now present a barrier to achieving significant packaging (size and weight) reductions and struggle to meet new market-driven performance requirements. These markets not only include hybrid electric vehicles, wind power and portable defibrillators, but also the military and aerospace markets where the power source must be incredibly lightweight. Ultra thin gauge biaxially oriented films produced by DTF in thicknesses of 1.4 to 4 microns and thicker were constructed intometallized capacitors ranging from 1 to 140 micro Farads. The new dielectric film demonstrated the following compared to PET (polyethylene phtherepthalate) film:
▲Gain in dielectric strength of over 30-40%
▲At least an order of magnitude increase in insulation resistance
▲Enhancement in dielectric constant. These metallized film capacitors, which use either a solid or environmentally benign vegetable oil (dry) fill, can now replace capacitors that use environmentally problematic liquid electrolyte systems. The technology is a promising candidate for the development of a higher energy density, high voltage film capacitors for a large number of applications including, defense, aerospace, defibrillator, automotive, and electric power generation.

Brand of Product：	CDE
Part#：
Product Category：	High Energy Density Film Capacitors More
Application：	More
Data Type：	Technical Documentation More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
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Language：	English Chinese Chinese and English Japanese
Date of Creation：	2021/07/05
Version Number：
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Data Size：	240 KB

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