Method for improving energy storage density of polypropylene film capacitor
A technology of energy storage density, polypropylene film, applied in the direction of film/thick film capacitors, capacitors, capacitor manufacturing, etc., can solve the problems of poor universality and high cost, improve energy storage density and charge and discharge efficiency, simple operation, The effect of increasing the dielectric constant and breakdown field strength
Inactive Publication Date: 2021-07-09
ZHEJIANG HUAYOU COBALT
View PDF3 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to solve the problems of poor universality and high cost of the technology used to improve the energy storage density of polypropylene film capacitors under the existing background, and to provide a low-cost, high-efficiency technology that can significantly improve the energy storage density of polypropylene film capacitors. The method specifically includes the following steps:
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0018] The invention provides a method for improving the energy storage density of a polypropylene film capacitor, comprising the steps of:
[0019] 1) Polypropylene film for tiled capacitors; commercial polypropylene film provided by Anhui Tongfeng Electronics Co., Ltd., with a film thickness of 8 to 9 microns;
[0020] 2) Ultraviolet radiation treatment of polypropylene film: 200nm to 400nm of ultraviolet light, 5 to 10 cm away from the sample, irradiated at room temperature for 5 minutes, 10 minutes, and 15 minutes respectively, and the ultraviolet intensity was 10 to 30mW / cm 2 ;
[0021] 3) Use the PolyK instrument (CPE1701) to test the potential displacement loop of the PP film after UV irradiation. The test results are shown in figure 1 The breakdown field strength of the PP film after UV irradiation was characterized by the overvoltage technology-withstand voltage test technology of Beijing Electric Power Research Institute, and the test results are shown in figure 2...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| strength | aaaaa | aaaaa |
| wavelength | aaaaa | aaaaa |
Login to View More
Abstract
The invention belongs to the technical field of new energy, and particularly relates to a method for improving the energy storage density of a polypropylene film capacitor. According to the invention, the polypropylene film is subjected to ultraviolet irradiation treatment, so that the ion polarization and orientation polarization inside the PP film subjected to ultraviolet irradiation are enhanced, the dielectric constant of the PP film is increased, and the energy storage density and the charge-discharge efficiency of a capacitor made of the PP film subjected to moderate UV irradiation are remarkably improved. The polypropylene films used in the method are various commercially available and commercial capacitor PP films, the sources of the films are wide and are not limited, complex modification treatment does not need to be carried out in the production stage of the PP films, moderate UV irradiation is carried out in the use stage of the PP films, and the energy storage density of the polypropylene film capacitor is remarkably improved through UV irradiation; and therefore, the method has the advantages of simple operation and large-scale preparation.
Description
technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to a method for increasing the energy storage density of a polypropylene film capacitor. Background technique [0002] Dielectric capacitors have the characteristics of high power density, ultra-fast charge and discharge, and all-solid state, and are currently widely used in electronic power systems, energy systems, and other fields as important energy storage devices. Among them, capacitors using polymer materials as dielectrics have the advantage of high charge and discharge efficiency, and have been widely used in commercial applications. Energy storage density is a parameter that reflects the energy storage capacity of capacitors, and is one of the important indicators that reflect the performance of capacitors. The main factors affecting the energy storage density of dielectric capacitors include the dielectric constant of the dielectric material and the breakdo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/33H01G4/14H01G13/00
CPCH01G4/14H01G4/33H01G13/00
Inventor 王利华李宝文陈家钰胡焰辉
Owner ZHEJIANG HUAYOU COBALT