The present disclosure relates to a wound electrical component comprising a wound body comprising a plurality of wound layers of a web of an electrically insulating material around a longitudinal axis of the body. The wound body comprises a plurality of electrically conducting layers of an electrically conducting material, each printed onto a respective separate area of the web in the wound body. An edge zone of at least one of the plurality of electrically conducting layers is connected to a printed high permittivity layer of a high permittivity material along said edge zone such that at least a part of the high permittivity layer extends, printed on the web, beyond the edge zone.

A film capacitor includes: a main body portion including a first metallized film including a first metal film on a first face of a first dielectric film, and a second metallized film including a second metal film on a second face of a second dielectric film; and external electrodes. The first or second dielectric film is located between the first and second metal films. The external electrodes are disposed on main body ends so as to be electrically connected with the first or second metal film. At least one of the first and second metal films includes a first portion which has a film thickness of 20 nm or more and is located in proximity to the main body ends, and the first portion includes a first groove extending in the first direction and being in contact with corresponding one of the main body ends.

A film capacitor includes: a main body portion including a first metallized film including a first metal film on a first face of a first dielectric film, and a second metallized film including a second metal film on a second face of a second dielectric film; and external electrodes. The first or second dielectric film is located between the first and second metal films. The external electrodes are disposed on main body ends so as to be electrically connected with the first or second metal film. At least one of the first and second metal films includes a first portion which has a film thickness of 20 nm or more and is located in proximity to the main body ends, and the first portion includes a first groove extending in the first direction and being in contact with corresponding one of the main body ends.

A film capacitor that includes a resin layer which has a first surface and a second surface and in which there are particles on at least one of the first surface and the second surface; and a metal layer on the first surface of the resin layer, wherein there are more particles in number on the at least one of the first surface and the second surface of the resin layer than inside the resin layer.

The invention relates to an energy storage system, the use of an energy storage system, a charging device, a system and a method for charging an energy store, the system comprising a re-chargeable energy store (1) and said energy store (1) having a rotatably mounted first roll (2) and a film (4) having electrodes (60, 61, 63, 65, 66). The film (4) is at least partially wound on the first roll (2).

Disclosed are a high-temperature, high-performance capacitor thin film continuous production device and method. A thin film (3) to be processed is released by an unwinding roller (1), the position of the thin film to be processed is adjusted by an unwinding adjustment roller (2), such that the thin film is guaranteed to be located at the middle position of a discharge gap (12), and the thin film to be processed then passes through a plasma deposition area, the position of the processed thin film (7) is adjusted by a winding adjustment roller (4), and the processed thin film, after adjustment, is wound by a winding roller (6) after being drawn by a drawing roller (5), with the winding roller being an inflatable roller. The steady and controllable movement of the thin film in the deposition area is achieved. Large-scale continuous production, capable of matching the existing production speed of a polymer capacitor thin film, can be achieved using the device, wherein same has the advantages of flexible configuration, low environmental requirements, strong universality, a fast processing speed, low production costs and no pollution.

A film capacitor includes a main body portion shaped in a rectangular prism, and a pair of external electrodes. The main body portion includes dielectric films and metallic films which are laminated, and includes a pair of first faces opposed to each other, a pair of first side faces opposed to each other, and a pair of second side faces opposed to each other, the pair of first side faces connecting the pair of first faces, the pair of second side faces connecting the pair of first faces. The pair of external electrodes is located on the pair of first side faces. The second side faces are covered with an insulating cover layer. The film capacitor includes a grease-containing portion between the second side face and the insulating cover layer, the grease-containing portion including an insulating grease.

A film capacitor includes a first film, a second film, a first electrode part, and a second electrode part. The first electrode part includes a first aluminum-containing layer disposed on a first film surface. The second electrode part includes a second aluminum-containing layer disposed on a second film surface. The first film and the second film stacked on one another are wound or stacked. The first film surface is provided with a first non-electrode part that does not include the first aluminum-containing layer and extends in the longitudinal direction of the first film surface. The first electrode part has a first end adjacent to the first non-electrode part. The second film surface is provided with a second non-electrode part that does not include the second aluminum-containing layer and extends in the longitudinal direction of the second film surface. The second electrode part has a second end adjacent to the second non-electrode part. A film capacitor further includes a first zinc-containing layer disposed on the surface of a part including the first end and a second zinc-containing layer disposed on the surface of a part including the second end.

A film capacitor includes a first film, a second film, a first electrode part, and a second electrode part. The first electrode part includes a first aluminum-containing layer disposed on a first film surface. The second electrode part includes a second aluminum-containing layer disposed on a second film surface. The first film and the second film stacked on one another are wound or stacked. The first film surface is provided with a first non-electrode part that does not include the first aluminum-containing layer and extends in the longitudinal direction of the first film surface. The first electrode part has a first end adjacent to the first non-electrode part. The second film surface is provided with a second non-electrode part that does not include the second aluminum-containing layer and extends in the longitudinal direction of the second film surface. The second electrode part has a second end adjacent to the second non-electrode part. A film capacitor further includes a first zinc-containing layer disposed on the surface of a part including the first end and a second zinc-containing layer disposed on the surface of a part including the second end.

In a metallized film 1, n electrode portions 20, which are metal deposition portions, are formed in parallel on one surface of a dielectric film 2 having a film width corresponding to n capacitor elements, n being an even number of 2 or more. Each electrode portion 20 is provided with a plurality of inclined margins 31 and 32, which are non-metal deposition portions extending at an angle with respect to a film width direction, at a regular interval in a film length direction. Across a center line Lc virtually extending in the film length direction at the center in the film width direction, the inclined margins 31 of the electrode portion 20 located on one side in the film width direction, and the inclined margins 32 of the electrode portion 20 located on the other side in the film width direction are inclined in opposite directions so as to be line-symmetric with respect to the center line Lc.