Daifuku Co., Ltd.

Auckland Uniservices Limited

Diafuku Co., Ltd.

Shuzo Nishino

John Talbot Boys

Takashi Okamura

Hideichi Tanizawa

Michio Iwama

Koji Turu

Tomomi Imanaka

A charging apparatusincludes: a half-wave rectifierthat half-wave rectifies an alternating current supplied from a commercial power supply; a radiofrequency generating circuitthat converts the output current of the half-wave rectifierto a radiofrequency current with a predetermined frequency and outputs the radiofrequency current; an induction coilthat is fed with the radiofrequency current from the radiofrequency generating circuit; a power receiving coilthat receives an electromotive force induced by a magnetic flux produced on the induction coil; a resonant capacitorthat is connected in parallel with the power receiving coiland forms a resonant circuit with the power receiving coilat the predetermined frequency; and a full-wave rectifierthat full-wave rectifies the output current of the parallel resonant circuit and supplies the current to a lead storage battery

Charging apparatus for lead storage battery

In order to provide contactless power-feed equipment that can avoid excessive energy consumption upon switching, a primary side includes a DC power-supply device, a power-feed device, and a power-feed unitand a secondary side includes a power-receiving unit. The power-feed deviceincludes: an insulating transformerincluding a primary coilwith a center tapfed with a DC current and a secondary coilconnected to the power-feed unit; a resonance capacitorconnected in parallel with the secondary coilof the insulating transformer; a first diodeand a first Zener diodethat are connected to one endof the primary coil; a second diodeand a second Zener diodethat are connected to the other endof the primary coil; a first transistorconnected to the first diode, and a second transistorconnected to the second diode

Contactless power-feed equipment

A plurality of pickup coilsA andB are provided, resonance capacitorsA andB forming resonance circuitsA andB resonating at the frequency of an inductive pathare respectively connected in series with the pickup coilsA andB, and the resonance circuitsA andB are connected in series. Further, the resonance circuitsA andB are respectively provided with rectifier circuitsA andB for rectifying voltages generated by the resonance circuitsA andB. The rectifier circuitsA andB are connected in parallel and feed power to a load. Moreover, a switchis provided to switch a connected state and an open state between the resonance circuitsA andB, and a voltage controlleris provided to control an output voltage applied to the load, by controlling the switch

Secondary-side power receiving circuit of noncontact power supplying equipment

A composite core nonlinear reactor comprising a first core member of high permeability material forming a continuous annular magnetic path, a second core member of high permeability material forming an annular magnetic path locally broken by an air gap, a magnetic shield plate of low permeability material exhibiting high conductivity and thermal conductivity being sandwiched by the first and second core member and integrated therewith, and a coil winding, wherein the annular magnetic paths of the first and second core members are juxtaposed while sandwiching the magnetic shield plate and the coil winding is wound to interlink with both annular magnetic paths commonly

Composite core nonlinear reactor and induction power receiving circuit

An arrangement comprising a magnetic body () having a hole portion () for passage of a primary-side first induction line (), a primary-side second induction line () for electrically feeding a load in a contact less manner, an added line () passing through the hole portion () of the magnetic body, and 1th contact () for short-circuiting the added line. According to this arrangement, short-circuiting provided by the 1th contact () can cut off electric feeding to the primary-side second induction line (), thereby isolating the load (second-side power receiving circuit) without mechanically switching the power supply line.

Contactless power supply system and branch box used therefor

A cable for use in a high-frequency current feeding equipment constituted by passing an inner bundle (A) of wires ( ) disposed at the same distance from the center of multiconductor cable ( ) and outer bundles (B and C) of wires ( ) through a ferrite ( ) in such a way that the ampere-turns thereof are the same. The counter-electromotive force generated because of the difference of the spatial arrangement between the inner wires ( ) and the outer wires ( ) caused when stranded is canceled, and the current phases and current values of the wires ( and ) are forced to be exactly the same. Therefore, an increase in the resistance due to the proximity effect is prevented, and thereby the multiconductor cable ( ) can be used as a high-frequency current cable.

Power feeding facility and its cable for high-frequency current

A proximity sensor (,), which generates an alternating current magnetic field in the direction of a guide rail (B) and detects a detection object by a loss of energy caused by a current which this alternating current magnetic field generates to flow to the detection object, is provided at the front end of each transport mover (V); a rear-end collision prevention detection plate (,), which enters between the guide rail (B) and the proximity sensor (,), is provided at the rear end of each transport mover (V); and a stopping device (W), which faces toward the proximity sensor (,) and forms a resonant circuit resonating at the generation frequency of the proximity sensor (,), is provided at a mover stopping location on the guide rail (B).

Travel control system for transport movers

An inductively coupled power distribution system for moving vehicles, in which resonating primary circuits to distribute power for resonating secondary circuits to collect and use in an optimized manner. In order to have all circuits resonating at substantially the same frequency, devices which detect and adjust resonating components are used, such as a frequency drift compensator in which the present frequency is compared to a reference voltage and causes a driver to be ON or OFF accordingly. Switches are driven CLOSED or OPEN respectively and when CLOSED, supplementary capacitors are included with a main capacitor in a primary resonant circuit. Dithering or pulsed control provides a continuous control of resonance, as the system takes some milliseconds to respond.

Non-contact power distribution system

A primary inductive path to which a high-frequency current is supplied from a power supply is laid along a guide rail for carrying car bodies and secondary electric power receiving circuit for receiving electric power from the primary inductive path in a contactless mode are disposed in the car bodies. Inductance in the primary inductive path is adjusted by disposing, in the power supply, a dummy inductor which is composed by overlapping a plurality of planar ferrite cores with gaps reserved so as to form a plurality of ferrite blocks and combining these ferrite blocks so as to form at centers thereof a run-through slot for passing the primary inductive path. Further, the secondary electric power receiving circuit is composed of a pick-up coil in which an electromotive force is generate by a magnetic flux produced by the primary inductive path, a capacitor which composes, together with the pick-up coil, a resonant circuit resonating with a frequency in the primary inductive path, a rectifier circuit connected to the capacitor, and a constant-voltage control circuit which is connected to the rectifier circuit and controls an output voltage to a standard voltage, and uses standard voltage generators which set the standard voltage of the constant-voltage control circuit at two steps in proportion to a load electric power as well as a controller for switching the standard voltage generators.

Contactless power distribution system

Device for contactless power supply to moving body

A cargo transport system for automated warehousing, wherein there are guide rail structures each mounted from an opposing shelving face structure of two rows of storage shelves extending substantially parallel to each other and present opposing shelving face structures toward one another, each of the guide rail structures including a guide rail with sides, at least one or more power supply conductors, or control signal conductors, or both power supply conductors and control signal conductors disposed substantially parallel to each other and arranged along the side of at least one guide rail, a cargo carrier adapted to roll over the guide rails, and collector attached from the load carrier for maintaining substantially constant electrically conducting contact with the power supply conductors and the control signals conductors for respectively powering and controlling the movement of the cargo carrier.

Growing community of inventors

Osaka, Japan

Shuzo Nishino