Apparatus for inductively transmitting electrical energy

摘要

An apparatus for inductively transmitting electrical energy from a stationary unit to a mobile unit which is located adjacent to the stationary unit. The apparatus has a coil and a flux guide unit for guiding a magnetic flux occurring during operation of the apparatus with at least one ferromagnetic body, which consists of a multiplicity of individual elements. The flux guide unit has the basic shape of a plate and is arranged on one side of the coil perpendicular to the winding axis thereof in such a way that it covers the cross-sectional area of the coil at least partially. The ferromagnetic body includes individual elements with anisotropic magnetic permeability and has, overall, anisotropic magnetic permeability. In a viewing plane perpendicular to the winding axis of the coil, the individual elements of the ferromagnetic body are aligned with respect to the coil in those regions in which a ferromagnetic body with anisotropic permeability covers winding sections of the coil, in such a way that the preferred direction of magnetic permeability, in which the magnetic permeability has its greatest magnitude in the viewing plane, is at least approximately perpendicular to the winding sections of the coil.

主权项

1. Apparatus for inductively transmitting electrical energy from a stationary unit to a mobile unit adjacent to the stationary unit, wherein the apparatus has a coil and a flux guide unit for guiding of a magnetic flux that appears during the operation of the apparatus with at least one ferromagnetic body having a multiplicity of individual elements, wherein the flux guide unit has the basic form of a plate and is situated on one side of the coil, perpendicular to its winding axis, in such a way that it, at least partially, covers the cross-sectional area of the coil, in that the ferromagnetic body is composed of individual elements with an anisotropic magnetic permeability, and, as a whole, has an anisotropic magnetic permeability, and in that in a viewing plane that lies perpendicular to the winding axis of the coil and in those areas in which a ferromagnetic body with an anisotropic permeability covers winding sections of the coil, the individual elements of the ferromagnetic body are aligned, relative to the coil, in such a manner that the preferred direction of the magnetic permeability in which it has the greatest magnitude in the viewing plane is, at least approximately, perpendicular to the winding sections of the coil.