31results about "Rail devices" patented technology

To bury, near a road surface of a travel route, a power supply device supplying power in a non-contact manner to a power receiving device provided in a movable body moving on the travel route, while ensuring long-term commonality.SOLUTION: A burying structure for a power supply device buries, in a travel route, a power supply device supplying power in a non-contact manner to a power receiving device provided in a movable body moving on the travel route. The power supply device has a protective case that stores a resonance capacitor connected in series to a power supply coil, and the protective case is formed to have a length in a transverse direction of the travel route shorter than a coil case that stores the power supply coil, the protective case being buried in the travel route.SELECTED DRAWING: Figure 1

To provide a contactless charging system that can perform contactless charging without using wireless communication. [Solution] The contactless charging system of the present invention is a contactless charging system that charges a power storage device by non-contacting the transmission of power from the primary transmission coil of a power transmission device to the primary receiving coil of a power receiving device, and comprises a protective cover that is openable and closable on the power receiving device, an actuator that is electrically connected to the primary receiving coil and opens and closes the protective cover, a secondary transmission coil provided on the protective cover and electrically connected to the primary receiving coil so as to be movable together with the protective cover, a secondary receiving coil provided on the power transmission device so as to face the secondary transmission coil when the opening of the protective cover is complete, and a current sensor that detects the current flowing through the secondary receiving coil. The current sensor detects the current flowing through the secondary receiving coil, which has been non-contactually received from the secondary transmission coil, and detects that the opening of the protective cover is complete.

An overhead line support structure 10 suitable for an overhead line equipment (OLE) installation (figure 1, 100). The overhead line support structure 10 comprises a support mast 20 having a first end

A contactless power feeding system includes a power supply line to supply AC power to a power receiver on a mobile body in a non-contact manner, and a power supply boards to generate AC power and supply the AC power to the power supply line. Each of the power supply boards performs PWM control to control the AC power to be supplied to the power supply line, by generating a control pulse to control generation of the AC power such that a timing of a center of an ON pulse of the control pulse has a same timing as a timing defined by a reference clock, and by changing a duration of the ON pulse.

An inspection method comprises: a first step for electrically connecting a first transmission line (TLa) and a second transmission line (TLb), by turning on a protection switch (SWp) during a period in which electric power is being received; and a second step for determining, after the first step, whether an abnormality has occurred, by using the electric current value of an output electric current that flows from a protection circuit (CRp) to a load.

To provide a power supply control device capable of stabilizing the power balance in the entire power supply system.SOLUTION: A disclosed power supply control device is a power supply control device for controlling a power supply lane that is placed on the roadside for supplying electric power. The power supply control device includes a processor that is configured so as to, when there is an electric power shortage in an electric power supply area from the power supply lane, acquire information on vehicle traffic in multiple power supply lanes managed by the power supply control device, and based on the vehicle traffic, set the supply priority for each power supply lane.SELECTED DRAWING: Figure 1

To provide a charge-discharge system for vehicles, etc., with which it is possible to improve convenience by a simple structure.SOLUTION: A charge-discharge system for vehicles according to one embodiment of the present disclosure is adopted for electric vehicles. The charge-discharge system comprises: a rectifier that is located in a charging path at the time a battery is contactlessly charged from an external facility via a coil in an electric vehicle; an inverter that is located on a first path between the battery and an electricity output terminal for outputting electricity stored in the battery; a relay that is located on a second path between the inverter and the coil; and a control unit that controls an operating state of the relay so that the electricity stored in the battery is contactlessly discharged to the external facility via each of the inverter, the relay and the coil on the second path.SELECTED DRAWING: Figure 1

The utility model discloses a kind of shuttle bus accompanying tow chain devices, including shuttle bus pit, kiln car transfer shuttle bus, shuttle bus accompanying cable tow line, accompanying cable slide rail and accompanying cable tow line column, kiln car transfer shuttle bus is installed in the shuttle bus pit by wheel and track cooperation, for realizing the transfer of kiln car, one end of shuttle bus accompanying cable tow line is connected to the power supply interface of kiln car transfer shuttle bus, the other end is connected with accompanying cable slide rail by connecting piece, accompanying cable slide rail is installed above the shuttle bus pit, accompanying cable tow line column is arranged at the end of shuttle bus pit, the part of shuttle bus accompanying cable tow line close to power supply end is bypassed or fixed in accompanying cable tow line column, to ensure the orderly state of the shuttle bus accompanying cable tow line when kiln car transfer shuttle bus moves. Compared with original trench type tank chain, it has the outstanding advantages of high equipment running stability, very low failure rate, more convenient and fast maintenance, high safety factor.

A contactless power supply system (1, 1a to 1i) includes: a mobile body (30, 31a to 31d, 32a, to 32d, 33 to 35) that includes a power reception apparatus (310), and transfers a work object from a first work site (WA1) to a second work site (WA2); and a power transmission apparatus (21 to 25) that is capable of supplying power to the power reception apparatus without contact in a state in which the mobile body is stopped at at least a scheduled stop position (Ar11, Ar13, Ar22 to Ar25, Ar27, Ar32, Ar201, Ar41, Ar202, Ar51, Ar52, Ar61 to Ar64, Ta1 to Tg1, Ta2, Tc2, Te2, Tg2, Th3, Tj3, T13, Ar23a) at which the mobile body is scheduled to stop within a movement path of the mobile body between the first work site and the second work site, or the mobile body is moving. The power reception apparatus includes at least a power reception coil (311) provided on a side surface side of the mobile body.

To surely rescue a vehicle with power shortage.SOLUTION: A server device comprises: a communication part; and a controller which communicates through the communication part with a vehicle. The controller acquires amount of charge required for a vehicle to be charged and a location and instructs the charging vehicle that does not have sufficient amount of charge to travel to the location on a route where power feeding from a road surface is possible.SELECTED DRAWING: Figure 3

To suppress environmental pollution at a work site.SOLUTION: A transportation vehicle includes: a dump body; a vehicle body that supports the dump body; a travel device that has drive wheels and supports the vehicle body; a trolley power reception device that is supplied with power from a trolley wire; a bidirectional DC / DC converter; a storage battery that is charged with power supplied from the trolley wire via the bidirectional DC / DC converter; an electric motor that generates driving force for rotating the drive wheels; and a switch mechanism that switches between a first state where power is supplied from the trolley wire to the electric motor via the bidirectional DC / DC converter and a second state where power is supplied from the storage battery to the electric motor via the bidirectional DC / DC converter.SELECTED DRAWING: Figure 3

To provide a power transmission coil unit and power supply system that enables wireless power transfer while driving with the simplest possible configuration. [Solution] In a wireless power supply system that provides power while in motion, the power transmission coil unit comprises a power transmission coil equipped with a power transmission coil that transmits high-frequency power from a power transmission device, and a power receiving coil mounted on a mobile body that receives the high-frequency power transmitted from the power transmission coil unit, the system includes a detection unit that detects whether or not an object exists within the power transmission range of the power transmission coil unit, and if an object exists, the detection unit determines whether the object is the power receiving coil or an object other than the power receiving coil, and if the detection unit determines that the object is the power receiving coil, it supplies high-frequency power from the power transmission device to the power transmission coil, and if the detection unit determines that the object is an object other than the power receiving coil, it stops supplying high-frequency power from the power transmission device to the power transmission coil.

The wireless power supply device 3 includes a transmitter coil L1 that wirelessly transmits electric power to a receiver coil L2. The wireless power supply device 3 includes a transmitter resonant circuit having a transmitter capacitor C1 and the transmitter coil L1, a transmitter core around which the transmitter coil is wound, first switching elements S 11, S12 controllably turned ON / OFF based on a first PWM signal P1, second switching elements S21, S22 controllably turned ON / OFF based on a second PWM signal P2, and a control unit 4 supplying the first PWM signal P1 and the second PWM signal P2. The control unit 4 changes duty ratios of the first PWM signal P1 and the second PWM signal P2 according to relative positions of the transmitter coil L1 and the receiver coil L2.

The application provides a three-step power supply system and a power supply control method thereof, the system comprising three converters, a trackside switch station and a control unit; the three converters are used for three-step power supply for two sections of relatively arranged tracks; the trackside switch station comprises a plurality of switches, one end of each switch being connected with a power supply section and the other end being connected with a converter corresponding to a current power supply section; the control unit is used for controlling the conduction and disconnection of each switch of the trackside switch station, realizing the power-on and power-off of each converter to the corresponding power supply section; wherein, when a train is at a preset distance Lv from a starting point of a next power supply section, the next power supply section is powered on, and when the train is at a preset distance Lv from an ending point of a current power supply section, the current power supply section is powered off; the preset distance Lv is obtained through the following formula: Lv=Vmax*△t*G; in the formula, Vmax is a maximum speed allowed to run on a current line, △t is a maximum current rising time required by the system, and G is a weight coefficient.

A system for wireless power transfer of on-road vehicles is provided herein. The system includes a plurality of base stations; a power transmission line located beneath a surface of a road having a plurality of segments, each segment having at least one pair of coils and at least one capacitor electrically connected via a switch to the coils in the segment; and at least one vehicle having at least one power receiving segment having at least two coils, connected to at least one capacitor, wherein the at least one vehicle further includes a communication transmitter configured to transmit a power requesting signal, wherein the coils of the power transmitting segment are configured to receive the power requesting signal; and wherein each of the base stations is further configured to feed a plurality of the power transmitting segments with current at a resonance frequency, responsive to the power requesting signal.

To provide a wireless power feeding device that transmits power to a motor in which the state of the motor or peripheral circuits thereof is stabilized.SOLUTION: A wireless power feeding device 10 includes a power feeding resonant circuit 1 that couples wirelessly, that is, in a contactless manner, to a power receiving resonant circuit 2 that supplies power to a motor MT. The wireless power feeding device 10 further includes a switching power supply 20 that supplies power to the power feeding resonant circuit 1 by switching. The wireless power feeding device 10 further includes a control unit 3 coupled to the power feeding resonant circuit 1. The control unit 3 includes a feedback unit 16 and a phase adjustment unit 18 and switches a switching power source 20 at a timing corresponding to a time change in voltage or current in the power feeding resonant circuit 1.SELECTED DRAWING: Figure 1

This invention provides a self-powered, all-solid-state rail potential limiting device and its control method, relating to the field of electrified rail transit technology. The device includes a fully sealed protective housing and housed within the housing a self-powered module, an all-solid-state switch module, an intelligent main control module, and an isolation drive and heat dissipation module. The device is electrically connected to the rail via a rail connection cable and to the integrated grounding grid via a grounding down conductor. The isolation drive and heat dissipation module is positioned between the intelligent main control module and the all-solid-state switch module. The intelligent main control module is electrically connected to the all-solid-state switch module, the self-powered module, and the isolation drive and heat dissipation module. The self-powered module converts the potential difference signal collected by the isolation drive and heat dissipation module into DC power to supply power to the intelligent main control module and the isolation drive and heat dissipation module. This invention solves the problems of traditional devices relying on external power supply and the difficulty of energy acquisition in passive operating conditions under long tunnels.

The application belongs to the field of rail transit technology, and particularly relates to an insulation supporting device and a contact rail system. The insulation supporting device comprises a base, a supporting seat arranged on the base, an adjusting baffle arranged outside the supporting seat, the adjusting baffle being provided with a waist-shaped hole, a fixing seat rotatably arranged in the supporting seat, a transmission shaft having one end connected with the fixing seat and the other end penetrating the supporting seat and connected with the adjusting baffle, a connecting shaft having one end connected with the fixing seat and the other end rotatably connected with the supporting seat, the connecting shaft and the transmission shaft being respectively arranged on two opposite sides of the fixing seat, a first locking member movably penetrating the waist-shaped hole and the supporting seat, a composite insulator comprising a first metal part movably arranged in the fixing seat, and an adjusting member having one end abutting against the base and the other end threadedly connected with the first metal part. The insulation supporting device and the contact rail system can realize linear adjustment in the horizontal direction and active adjustment of the pitch angle.

To realize non-contact charging of a vehicle with high efficiency while minimizing load on its driver with a simple configuration.SOLUTION: A charging control device 110 to control a power transmitting device 120 that performs charging by transmitting electric power in a non-contact manner to a power receiving device 910 mounted on a vehicle 900 in a predetermined chargeable region 310, comprises: a driving unit 114 that performs control so that the power receiving device 910 and the power transmitting device 120 face each other on the basis of a position of the power receiving device 910 in the chargeable region 310 identified on the basis of a result of analysis of a surroundings image 430 including the entire chargeable region 310; and a power transmission control unit 115 that starts power transmission from the power transmitting device 120 after the power receiving device 910 and the power transmitting device 120 are arranged to face each other by the driving unit 114.SELECTED DRAWING: Figure 2

The present invention relates to a system and method for reducing stray current caused by power supply return current of subway running rail, which is suitable for the power supply system of track return line adopted in DC power-supplied subway trains. By adopting parallel-connected connection branches composed of inductors, supercapacitors, IGBT switches, contactors, etc., and intelligently controlling the conduction and flow direction of current, and effectively filtering the harmonic components of return current, it can effectively reduce the leakage of harmonic components of stray current caused by harmonics from inverter switching circuits of trains to the outside of the running rail itself, and prevent electrochemical corrosion damage to other facilities and equipment.

To provide a charge system for vehicles, etc., with which it is possible to improve convenience.SOLUTION: A charge system for vehicles according to one embodiment of the present disclosure comprises: a rectifier that is located on a charging path between a coil in an electric vehicle and a battery; an inverter that is located on a first power feeding path between the battery and an electricity output terminal; a first relay that is located on the charging path; a second relay that is located on a second power feeding path between the coil and the electricity output terminal; and a control unit that exercises control so that the battery is contactlessly charged from an external facility via the charging path, and first power feed from the external facility to an external apparatus via each of the charging path and the first power feeding path, or second power feed from the external facility to the external apparatus via the second power feeding path is carried out. The control unit controls operating states of the first and second relays, respectively, in accordance with facility electricity supplied from the external facility to the coil, required battery electricity, and external apparatus electricity required for the external apparatus.SELECTED DRAWING: Figure 1

To solve a problem in which, conventionally, there is no technique for using charging lanes that prevents the deterioration of a battery in a mobile vehicle.SOLUTION: A mobility support device 1 includes a detection unit 131 that detects the presence of a charging lane C on or around a route along which a mobile body B travels, through which power can be transmitted to the mobile body B, an SOC acquisition unit 135 that acquires SOC information indicating the state of charge of a battery 2 of the mobile body B, a determining unit 137 that determines recommendation information indicating recommendation or non-recommendation of use of the charging lane C on the basis of the SOC information when the detection unit 131 detects the presence of the charging lane C, and an output unit 14 that outputs the recommendation information, and can use the charging lane appropriately while preventing battery deterioration of the mobile body.SELECTED DRAWING: Figure 2

An electric vehicle includes an electric motor, a power storage body, a power receiver, a charger, and a control system. The electric motor is coupled to a wheel. The power storage body is coupled to the electric motor. The power receiver receives electric power from an external power source. The charger is coupled to the power receiver and the power storage body. The control system controls the electric motor. The electric vehicle has traveling modes including a first traveling mode, and a second traveling mode in which regenerative electric power upon vehicle braking is smaller than that in the first traveling mode. The control system executes the first traveling mode in a non-power-supply time in which the charger is deactivated, and executes the second traveling mode in a power-supply time in which the charger is activated.