48results about How to "Enhanced Magnetic Coupling" patented technology

A coil component is provided with first wire and second wires that are wound around a winding core. nth turns of the first and second wires are wound around a surface of the winding core in this order in parallel and form a first winding layer. Each of n+1th and subsequent turns of the second wire is wound around the surface of the winding core so as to be parallel to a previous turn of the second wire and form the first winding layer. Each of n+1th and subsequent turns of the first wire is wound on the first winding layer so as to be fitted into a valley of the first winding layer formed by the same and previous turns of the second wire and form a second winding layer. The same turns of the first and second wires are adjacent to each other at each turn.

A cold crucible induction furnace has a slotted-wall with a slotted inner annular protrusion that is disposed around the base of the crucible's melting chamber. The protrusions may be separated from the base by a gap that can be filled with an electrical insulating material. Slots may also be provided in the protrusions and / or the outer perimeter of the base.

A system for transmitting electric power from an electric power transmission apparatus (10) to an electric power reception apparatus (50) by using electromagnetic induction between a power receiving coil (60) and a power transmitting coil (40). The electric power transmission apparatus (10) comprises an electric power switching circuit (14), a first capacitor (20) and an electric power derivation circuit (30). The electric power switching circuit (14) includes a switching element (16) and an output point (P) and switches the switching element (16) at a predetermined switching frequency (f), thereby causing the electrical potential at the output point (P) to exhibit a predetermined variation, wherein the predetermined variation is an electrical potential variation obtainable by the half-wave rectification of a sinusoidal wave variation which has a predetermined amplitude. The first capacitor (20) is coupled between the output point (P) and a first constant electrical potential (ground). The electric power derivation circuit (30) includes the power transmission coil (40) and is formed to cause an AC variation of the foregoing predetermined variation to occur between the both ends of the power transmission coil (40). The electric power derivation circuit (30) is coupled between the output point (P) and a second constant electrical potential (ground).

The coil form (1) according to the invention for forming an inductive element includes a hollow (9) cylindrical mantle portion (2), two flange portions (3.1, 3.2) and a slit (7). The flange portions and the mantle portion form a winding chamber (5) for winding therein a wire that forms a first winding or a part of a first winding of the inductive element. The coil form (1), which is completely made of copper, forms a second coil or a winding of a second coil of the inductive element. Due to the increased contact surface between the first and the second coil the heat dissipation capabilities and the magnetic coupling between the coils are increased. This in turn results in an increased power density of the inductive element.

A first coil is configured in such a structure that first and second coil conductors are connected by a first through-hole conductor. A second coil is configured in such a structure that third and fourth coil conductors are connected by a second through-hole conductor. The first and second coils are arranged in a nonmagnetic section consisting of nonmagnetic layers. A portion located inside the first coil and the second coil in the nonmagnetic section includes a first regional portion and a second regional portion adjacent to each other when viewed from a laminated direction of the nonmagnetic layers. The first and second through-hole conductors are located in the first regional portion so as to be adjacent to each other, when viewed from the laminated direction. A magnetic core section comprised of a magnetic material is located in the second regional portion when viewed from the laminated direction.

Wire-holders are provided that confine a single wire over a limited arc section and that are interspersed with ferrite ingots that provide wire-ways for several wires are utilized in the winding of the coils of a transformer. A method for consistently producing windings having accurate wire placement on rotors, stators, and other electrical componentry is also provided.

The invention relates to a wireless power supply device for electric vehicles, which adopts magnetic coupling resonance type and magnetic induction type wireless power transmission and reception mode, including a transmitting coil, a receiving coil, a transmitting coil magnetic core and a receiving coil magnetic core, and the transmitting coil magnetic core is composed of The thin shaft of the magnetic core and the circular platforms at both ends of the magnetic core are composed; the transmitting coil is wound close to the thin shaft of the magnetic core; the height of the transmitting coil is equal to the length of the thin shaft of the magnetic core l core equal; the height h of the round platform at both ends of the magnetic core is 1 / 6 of the length l of the transmitting coil magnetic core; the upper bottom surface of the round platform at both ends of the magnetic core is close to the thin axis of the magnetic core and the cross-sectional radius of the thin axis of the magnetic core is r core , the radius r of the two upper bottom surfaces and the radius r of the transmitting coil 1 Equal; the radius R of the bottom surface of the circular platform at both ends of the magnetic core and the radius r of the receiving coil 2 The same; the height of the receiving coil is the same as the length L of the receiving coil core. The wireless energy transmission effect of the invention is better, and the transmission distance and transmission efficiency are greatly improved.