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Metalized thin film with multiple inner string structures

A technology of metallized film and metal coating, applied in the direction of thin film/thick film capacitors, multiple fixed capacitors, electrical components, etc., can solve the problems of uneven voltage distribution, labor and material cost, high product failure rate, etc., to reduce spraying The effect of reducing the number of gold end faces, reducing processing steps, and saving costs

Inactive Publication Date: 2018-09-28
钱立文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Capacitors manufactured with this design and process are not only labor-intensive, but also have a high failure rate due to many processing procedures. Although the voltage level can be increased by connecting several single film capacitor cores in series, it is difficult to reduce the voltage level of a single film capacitor. The current density of the capacitor core is sprayed with gold on the end face, which causes the capacitor to heat up, and the capacitance of the capacitor cores connected in series is not equal, so it is easy to cause the overall capacitor breakdown due to uneven voltage distribution.

Method used

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  • Metalized thin film with multiple inner string structures
  • Metalized thin film with multiple inner string structures
  • Metalized thin film with multiple inner string structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 (eg figure 1 Shown): 3 metallized film structures in series, the first metallized film (1) contains 1 wide metallized strip (3) and 1 narrow metallized strip (4); the second metallized film (2) contains 1 wide metallized strip (3) and 1 narrow metallized strip (4); when stacking winding capacitors, the first metallized film (1) and the second metallized film (2) must be vertically staggered by about 3mm.

Embodiment 2

[0031] Example 2 (eg figure 2 Shown): 4 metallized film structures in series, the first metallized film (1) contains 2 wide metallized strips (3), no narrow metallized strips (4); the second metallized film (2) contains 1 One wide metallized strip (3) and two narrow metallized strips (4); the width of the first metallized film (1) is about 3mm smaller than the width of the second metallized film (2), and the first metallized The film (1) and the second metallized film (2) do not need vertical misalignment.

Embodiment 3

[0032] Example 3 (as image 3 Shown): 5 inner series metallized film structure, the first metallized film (1) contains 2 wide metallized strips (3) and 1 narrow metallized strip (4); the second metallized film (2) contains 2 wide metallized strips (3) and 1 narrow metallized strip (4); when stacking winding capacitors, the first metallized film (1) and the second metallized film (2) must be vertically staggered by about 3mm.

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Abstract

The invention discloses a metalized thin film with multiple inner string structures. The metalized thin film comprises a first metalized thin film (1) and a second metalized thin film (2) formed by dividing and cutting through a dividing and cutting machine; each of first metalized thin film (1) and the second metalized thin film (2) is provided with a wide metal plated layer band (3) and a narrowmetal plated layer band (4) separately; and a blank isolation band (5) is arranged between the wide metal plated layer band (3) and the narrow metal plated layer band (4). According to a metalized power capacitor manufactured by adopting the metalized thin film, the cost can be lowered, the processing procedures can be reduced, and the product fault rate is low.

Description

technical field [0001] The invention relates to a metallized film material for the production and manufacture of film capacitors, in particular to a metallized film with a multi-internal string structure. Background technique [0002] Film capacitors are widely used because of their good pressure resistance and self-healing properties. Metallized films are important materials for the production of film capacitors. High-purity metals (such as Al, ZN) are melted, evaporated, and precipitated in a high vacuum state. On the dielectric base film, the film after forming an extremely thin metal coating on the surface of the dielectric base film is the metallized film; metallized power capacitors are generally used in low-voltage power grids with a voltage not exceeding AC1000V. Voltage (above AC2000V) or frequent voltage mutations or severe overcurrent are used as metallized AC capacitors for compensation. Domestic manufacturers generally use the method of external series connectio...

Claims

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Application Information

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IPC IPC(8): H01G4/005H01G4/30H01G4/32H01G4/33H01G4/38
CPCH01G4/33H01G4/005H01G4/30H01G4/32H01G4/385
Inventor 钱锦绣
Owner 钱立文