Unlock instant, AI-driven research and patent intelligence for your innovation.

Capacitor and method for producing a capacitor

A capacitor and electrical connection technology, applied in the field of capacitors, can solve problems such as limiting the alternating current carrying capacity, and achieve the effects of increasing the alternating current carrying capacity, reducing loss, and reducing effective path resistance

Pending Publication Date: 2020-11-20
EPCOS AG
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the ESR ("equivalent series resistance") of the cathode foil can dominate the overall ESR of the capacitor and limit the alternating ampacity
This can be a limiting factor, for example, in the case of hybrid polymer capacitors with a given diameter starting at 12 mm and in the case of low voltage electrolytic capacitors with radial designs starting at 18 mm

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Capacitor and method for producing a capacitor
  • Capacitor and method for producing a capacitor
  • Capacitor and method for producing a capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] In the following drawings, parts corresponding in function or structure of the respective embodiments are preferably denoted by the same reference numerals.

[0057] figure 1 An embodiment of a capacitor 1 is shown with a winding 2 comprising a cathode foil 3, an anode foil 4 and a separator 5 arranged between them (see Figure 5A ).

[0058] Capacitor 1 may be, for example, an electrolytic capacitor, such as an aluminum electrolytic capacitor. In this case, separator 5 is impregnated with electrolyte. The electrolytic capacitor may also be, for example, a polymer electrolytic capacitor or a hybrid polymer electrolytic capacitor.

[0059] Cathode foil 3 , anode foil 4 and separator 5 are arranged such that separator 5 as a spacer exists between either side of cathode foil 3 and anode foil 4 . In the center of the winding 3 there is provided a winding hole 51 around which the foils 3 , 4 , 5 are wound.

[0060] The winding 2 has a protruding region 6 in which the ca...

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

No PUM Login to View More

Abstract

The invention relates to a capacitor comprising a winding (2) having a cathode foil (3), an anode foil (4) and separators (5) arranged therebetween. In a projecting region (6) in which the cathode foil (3) projects beyond the anode film (4), a plurality of layers (9) of the cathode foil (3) are arranged in a bundle (40, 41) and are electrically connected to one another directly.

Description

technical field [0001] The invention relates to a capacitor, in particular to an electrolytic capacitor. The capacitor has a winding including an anode foil, a cathode foil and a separator. Such a capacitor is described, for example, in patent EP 2169695 B. The capacitor can be designed, for example, as an electrolytic capacitor with only a liquid electrolyte, as a polymer electrolytic capacitor with a solid polymer electrolyte, or as a hybrid polymer electrolytic capacitor with a solid polymer electrolyte and a liquid electrolyte. Background technique [0002] In the case of capacitors with large diameters and thus long electrode paths, significant electrical losses in the electrode paths may occur for a given alternating current. In particular, thin cathode foils exhibit most of these losses. In this case, the ESR ("equivalent series resistance") of the cathode foil can dominate the overall ESR of the capacitor and limit the alternating ampacity. For example, this may ...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/012H01G9/008H01G9/06H01G9/15H01G9/00H01G9/145
CPCH01G9/0029H01G9/008H01G9/012H01G9/06H01G9/145H01G9/151
Inventor N·威尔F·A·比诺德卡马戈梅洛
Owner EPCOS AG