Abstract: Provided is a non-contact power transmission system with which it is possible to ion a primary coil and a secondary coil more accurately. A vertical distance estimation unit estimates the vertical distance between the center of the primary coil and the secondary coil on the basis of a voltage value detected by a voltage detector. A horizontal distance estimation unit estimates the horizontal distance between the center of the primary coil and the center of the secondary coil on the basis of the vertical distance estimated by the vertical distance estimation unit, the voltage value detected by the voltage detector, and the voltage value-distance information stored on the memory.

Abstract: The power transmission apparatus includes a power transmitting unit which transmits power to a first power receiving unit in a non-contact manner, a housing which accommodates the power transmitting unit, a second power receiving unit which is disposed on a sidewall of the housing and receives the power from the power transmitting unit in a non-contact manner, and an electric load which operates with power that the second power receiving unit has received. The power transmission apparatus operates only with a leakage magnetic flux and operates of a notification such as a non-contact power supply is in progress.

Abstract: A storage device stores a voltage value-horizontal distance characteristic that represents a relation between a horizontal distance between a primary coil and a secondary coil, and a voltage value. A characteristic setting unit sets a voltage value-horizontal distance characteristic that matches a vehicle state, on the basis of a value for the vehicle state (vehicle speed v, vehicle height h, and inclination i) detected by sensors and the voltage value-horizontal distance characteristic stored in the storage device. A horizontal distance estimation unit estimates the horizontal distance on the basis of the voltage value-horizontal distance characteristic and the voltage value.

Abstract: A voltage detector detects an LPE voltage generated by a weak power that is received by a secondary coil. A tendency determination unit determines whether the voltage value that changes as an electric vehicle travels tends to increase or decrease. A display device and an acoustic device perform a first notification if the voltage value tends to increase, and a second notification if the voltage value tends to decrease.

Abstract: Provided is a non-contact power transmission system with which it is possible to ion a primary coil and a secondary coil more accurately. A vertical distance estimation unit estimates the vertical distance between the center of the primary coil and the secondary coil on the basis of a voltage value detected by a voltage detector. A horizontal distance estimation unit estimates the horizontal distance between the center of the primary coil and the center of the secondary coil on the basis of the verticle distance estimated by the vertical distance estimation unit, the voltage value detected by the voltage detector, and the voltage value-distance information stored on the memory.

Abstract: A non-contact charging system includes: a power receiving unit mounted on a transportation device; a power transmission unit, installed on a flat surface, configured to transmit power to the power receiving unit in a non-contact manner; and a power supply unit configured to control power supply to the power transmission unit, the power supply unit including an operation portion configured to temporarily stop or resume non-contact power transmission from the power transmission unit to the power receiving unit.

Abstract: A non-contact power supply system includes a power receiving unit mounted on a vehicle, a power transmitting unit which is disposed on a plane and which transmits electric power to the power receiving unit in a non-contact manner, and a housing which projects in a vertical direction from the plane and which accommodates the power transmitting unit. The housing has a height in a vertical direction which satisfies a condition that a vertical height of at least part of a gap defined by a bottom surface of the vehicle and an upper surface of the housing is less than 15 cm and equal to or more than 5 cm. Therefore, the non-contact power supply system which satisfies a standard for exposure of a human body to electromagnetic field and which is free from an occurrence of a physical contact with a bottom surface of a vehicle is provided.

Abstract: A vehicle includes: a power receiving device configured to receive power from a power transmission device in a non-contact manner in a state of facing the power transmission device; a housing configured to store a power reception port to which an external power system is connected via a connecting tool, the housing including: an opening allowing access to the power reception port therethrough; a lid member covering the opening to be openable and closable; and a locking mechanism configured to lock the lid member in a state of closing the opening; and a controller configured to control whether access to the power reception port is permitted, and configured to drive the locking mechanism when the power receiving device starts receiving power such that the lid member is locked not to be opened.

Abstract: An electric vehicle includes a charging circuit and a control device. The control device is configured to set a charging current value by increasing the charging current value over time while a voltage of a battery of the charging circuit increases so that a load resistance value of the charging circuit is constant in a constant-resistance charging mode, at the time of continuing charging of the battery. The control device is configured to initiate the constant-resistance charging mode based on a determination by the control device that an SOC of the battery or the voltage of the battery is at or above a predetermined threshold value, or based on an input from a user. The control device is configured to initiate a constant-power control charging mode in which charging power of the charging circuit is constant.

Abstract: At a time that a parking operation is performed, a vehicle parking control device detects that a power receiving pad of an electric vehicle lies within a characteristics modifying range. Furthermore, the vehicle parking control device detects that other predetermined conditions are satisfied. In the case that the power receiving pad is positioned inside of the characteristics modifying range, and if all of the predetermined conditions have been satisfied, an acceleration-OFF-state movement characteristic of the vehicle, for example, a creep torque characteristic or a brake hydraulic pressure characteristic, is switched to an appropriate characteristic from a characteristic thereof at normal times.

Abstract: An electric vehicle includes a charging circuit and a control device. The control device is configured to set a charging current value by increasing the charging current value over time while a voltage of a battery of the charging circuit increases so that a load resistance value of the charging circuit is constant in a constant-resistance charging mode, at the time of continuing charging of the battery. The control device is configured to initiate the constant-resistance charging mode based on a determination by the control device that an SOC of the battery or the voltage of the battery is at or above a predetermined threshold value, or based on an input from a user. The control device is configured to initiate a constant-power control charging mode in which charging power of the charging circuit is constant.

Abstract: An electric vehicle includes a charging circuit and a control apparatus. The charging circuit includes a reception coil and a battery. The reception coil is configured to receive wirelessly AC power transmitted from an electrical transmission circuit outside of the electric vehicle. The battery is configured to be charged with power obtained by rectifying the AC power received by the reception coil. The control apparatus includes a battery voltage detector and a charging current value setting device. The charging current value setting device is configured to set a charging current value at which the battery is charged in accordance with voltage of the battery detected by the battery voltage detector. The charging current value is set so that a load resistance value of the charging circuit is constant in a period during which the battery is being charged.

Abstract: A storage device stores a voltage value-horizontal distance characteristic that represents a relation between a horizontal distance between a primary coil and a secondary coil, and a voltage value. A characteristic setting unit sets a voltage value-horizontal distance characteristic that matches a vehicle state, on the basis of a value for the vehicle state (vehicle speed v, vehicle height h, and inclination i) detected by sensors and the voltage value-horizontal distance characteristic stored in the storage device. A horizontal distance estimation unit estimates the horizontal distance on the basis of the voltage value-horizontal distance characteristic and the voltage value.

Abstract: A voltage detector detects an LPE voltage generated by a weak power that is received by a secondary coil. A tendency determination unit determines whether the voltage value that changes as an electric vehicle travels tends to increase or decrease. A display device and an acoustic device perform a first notification if the voltage value tends to increase, and a second notification if the voltage value tends to decrease.

Abstract: A non-contact charging system includes: a power receiving unit mounted on a transportation device; a power transmission unit, installed on a flat surface, configured to transmit power to the power receiving unit in a non-contact manner; and a power supply unit configured to control power supply to the power transmission unit, the power supply unit including an operation portion configured to temporarily stop or resume non-contact power transmission from the power transmission unit to the power receiving unit.

Abstract: A vehicle includes: a power receiving device configured to receive power from a power transmission device in a non-contact manner in a state of facing the power transmission device; a housing configured to store a power reception port to which an external power system is connected via a connecting tool, the housing including: an opening allowing access to the power reception port therethrough; a lid member covering the opening to be openable and closable; and a locking mechanism configured to lock the lid member in a state of closing the opening; and a controller configured to control whether access to the power reception port is permitted, and configured to drive the locking mechanism when the power receiving device starts receiving power such that the lid member is locked not to be opened.

Abstract: A fuel cell vehicle includes a lid, a switch, a sensor, and circuitry. The lid opens and closes a fuel inlet through which fuel gas is to be supplied to a tank. The switch takes an opening position to open the lid and a closing position to close the lid. The sensor detects whether the lid opens or closes the fuel inlet. The circuitry is configured to prohibit the fuel cell vehicle from travelling when the sensor detects that the lid opens the fuel inlet while the switch takes the opening position.

Abstract: A power reception apparatus includes a power reception coil, a relative distance detection section, a power transmission efficiency detection section, a database, a power transmission frequency setting section, and a power transmission request section. The power transmission frequency setting section is configured to read from the database a resonance frequency corresponding to a combination of a relative distance and an initial transmission efficiency and to set the read resonance frequency as a power transmitting frequency. The power transmission request section is configured to notify the power transmission apparatus of the power transmission frequency set by the power transmission frequency setting section to request wireless power transmission with the power transmission frequency.

Abstract: A vehicle guidance apparatus includes a power supplying parameter acquisition device, a power receiving parameter storage device, a charge efficiency calculator, and a display processing device. The power supplying parameter acquisition device is configured to acquire in a electric vehicle a power supplying parameter which corresponds to a specification of a power supplier. The power receiving parameter storage device is configured to store a power receiving parameter corresponding to a specification of a power receiver. The charge efficiency calculator is configured to calculate a charge efficiency according to a relative position between the power supplier and the power receiver based on the power supplying parameter and the power receiving parameter. The display processing device is configured to display on a display a range of the charge efficiency with respect to a center of the power receiver to guide the electric vehicle.

Abstract: A power transmission apparatus includes a power transmitting unit which is disposed on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other, which transmits power in a non-contact manner to a power receiving unit installed on a vehicle which enables to move on the plane, and a housing which accommodates the power transmitting unit, which is larger by a first specified amount in four directions than the power transmitting unit when the plane is seen from thereabove, and which projects vertically from the plane. In the case where the power receiving unit is positioned to be included in the housing when the plane is seen from thereabove, the first specified amount is a value which satisfies at least one of conditions that a power transmission efficiency between the power transmitting unit and the power receiving unit are equal to or greater than a predetermined amount, and that a leakage magnetic field strength is smaller than a predetermined amount.