Abstract:
PROBLEM TO BE SOLVED: To provide a reactor 1 capable of reducing usage of a core 3, improving heat dissipation and preventing deterioration of inductance L. SOLUTION: This reactor includes the core 3 made of magnetic powder-mixed resin, a cylindrical coil 2 and a metal inner core member 4. In the axial direction, both end surfaces of the coil 2 are positioned between one end and the other end of the inner core member 4, respectively. An expanded-diameter portion 5 whose outer diameter is expanded as approaching the front edge is formed in the inner core member 4. In the cross section including the axis line of the coil 2, 0.2T COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a power conversion device that is excellent in mountability of a reactor and allows simplifying manufacturing process and improving manufacturing efficiency.SOLUTION: A power conversion device 1 includes a stack 2 and a reactor 5. The reactor 5 is disposed at one end side of the stack 2 in a stacking direction X, and a coil 51 has a wound portion 511 and a pair of extraction portions 512. Each semiconductor module part 20 is provided with power terminals 211, and the stack 2 includes terminal columns 29 composed of the power terminals 211. The pair of extraction portions 512 are disposed at both end portions of a core 52 in an orthogonal direction Y, and are disposed so as to be substantially linear with respect to the different terminal columns 29. One of the pair of extraction portions 512 is connected to the power terminals 211 of the semiconductor module part 20 via a bus bar 6. The bus bar 6 has an extraction connection portion 61, a terminal connection portion 62, and a coupling portion 63. The coupling portion 63 is formed in the stacking direction X so as to pass the outside of the terminal columns 29.
Abstract:
PROBLEM TO BE SOLVED: To provide an electric power conversion apparatus and a method of manufacturing the same, capable of making manufacturing facilities small and reducing the manufacturing cost. SOLUTION: Provided is a method of manufacturing an electric power conversion apparatus, incorporating a reactor 2 having a coil 21 generating magnetic flux by applying current, and a core 22 consisting of a magnetic powder mixture resin filled inside and periphery of the coil 21. By providing the reactor 2 in a case 3 of the electric power conversion apparatus, a molding step of forming the reactor 2 using a molding tool different from the case 3, and a thermal inserting step of conducting heat expansion of a containing part 31 for reactors provided in the case 3, arranging the reactor 2 in the containing part 31, then cooling and contracting the containing part 31 to fix the containing part 31 to the reactor 2 are carried out. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a reactor in which magnetic saturation is prevented while generation and propagation of vibration is suppressed. SOLUTION: The reactor 1 has a coil 2 generating magnetic flux 5 by conduction, a core 3 composed of resin mixed with magnetic powder which fills the inside and the outer circumference of the coil 2, and a case 4 for containing the coil 2 and the core 3. Assuming the outside diameter of the coil 2 is D, and the axial length is L, the coil 2 is formed by winding a conductor wire 20 spirally to satisfy a relation D/L>1. The case 4 has at least one opening surface 41 in the axial direction of the coil 2. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide reactance for hybrid vehicle in which reactor loss can be reduced in the range of continuous conduction current without upsizing. SOLUTION: The reactor for hybrid vehicle is employed in the power supply system for driving a hybrid vehicle. The reactor for hybrid vehicle comprises a coil 1, and a core 5 molded of a core material produced by mixing iron powder into resin and formed on the outer circumferential side of the coil 1 while filling the inner circumferential side thereof. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a reactor wherein the man-hour in the processes for forming the insulating film of a reactor is reduced, and its manufacturing cost can be reduced. SOLUTION: The reactor manufacturing method relates to manufacturing a reactor 1 having a coil 2 generating a magnetic flux by applying a current to it, and having a core 3 filled into the inside and outer periphery of the coil 2 and made of a resin having mixed magnetic powder, and further a case 4 with the coil 2 and core 3 inside. In this method, each spacer 5 made of an insulator is so interposed between conductor wires 20 with which the coil 2 is molded helically as to provide a gap between the adjacent conductor wires 20. Next, a liquid insulating material is so applied to surfaces 200 of the conductor wires 20 as to form a united insulating film 6. Next, the coil 2 covered with the insulating film 6 is buried in the core 3 included in the case 4. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a reactor 1 for effectively dissipating heat generated by a coil 2 and a core 3. SOLUTION: This reactor includes the core 3 made of a resin mixture composed of magnetic powder and resin, wherein magnetic material powder is distributed in an insulating resin. The coil 2 that generates magnetic flux when a current flows is embedded in the core 3. Also provided is a core case 5 containing the core 3, having a core storage section 50 with an open end portion and being formed of material with heat conductivity larger than that of the core 3. Furthermore, it includes a flat plate 4 disposed in a position to fill up an opening 53 of the core storage section 50, which is formed of material with heat conductivity larger than that of air. The core 3 is configured so as to closely contact the main front surface 43 of the plate 4. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a reactor capable of saving space while ensuring inductance performance. SOLUTION: The reactor 1 has a coil 2 for generating magnetic flux at energization, and a core 3 disposed on the inside and outer circumference of the coil 2 and made of a magnetic power-mixed resin formed by mixing a magnetic powder. The coil 2 and the cores 3 each have an outer shape in which a projection shape to be formed in projecting the coil 2 and the cores 3 for a surface perpendicular to the axial direction of the coil 2 is non-circle. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a reactor capable of preventing concentration of magnetic flux in an axial direction end portion. SOLUTION: The reactor 1 has a coil 2 for generating magnetic flux on the basis of energization, a case 4 for housing the coil 2 inside, and a core 3 disposed in the case 4. The coil 2 has a curved surface end portion 22 having a shape in which an axial direction end portion 201 is formed into a curved line in a coil cross section 20 in cutting the coil 2 in an axial direction. The curved surface end portion 22 is formed into a semispherical shape in the coil cross section 20. The coil 2 is formed by spirally shaping a flat conductor wire 21. The end portion constituting portion 211 for constituting the axial direction end portion 20 of the coil 2 in the conductor wire 21 has a width smaller than that of a general portion constituting portion 212 constituting a portion other than the axial direction end portion 20 of the coil 2. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a reactor having an excellent heat dissipating property regarding the reactor having a coil, a core filled on the inside and outer periphery of the coil and a case housing the coil and the core inside. SOLUTION: The reactor 1 has the coils 2 generating magnetic flux by electric conduction, the core 3 formed with magnetic-powder mixed resin filled on the inside and outer peripheries of the coils 2 and the case 4 housing the coils 2 and the core 3 inside. The case 4 is composed of a vessel section 40 with an opening section 43 and a cover section 5 closing the opening section 43 of the vessel section 40. The cover section 5 has internal fins 51 projected to the inside of the case 4. At least some of the internal fins 51 are embedded into the core 3. COPYRIGHT: (C)2008,JPO&INPIT