Abstract: Provided is a cooling system for a power conversion device that includes a radiator, a radiator fan supplying air to the radiator, and a power conversion device including a plurality of electric components and a casing housing the plurality of electric components inside. The casing includes a base portion which is formed of a non-metallic material and on which the plurality of electric components is placed and a cover portion formed of a metallic material, fixed to the base portion, and covering a periphery of the plurality of electric components. A refrigerant channel through which a refrigerant cooling the plurality of electric components flows is formed in the base portion of the casing, and the casing is disposed at a position where an airflow of the radiator fan is applied to the cover portion.

Abstract: A power source system mounted in a vehicle includes: a first power source (2); a first load (41) operated by electric power supplied from the first power source (2); a first controller (9) that controls an operation of the first load (41) by a first program; a second power source (8) connected to the first power source (2) via a converter (7); a second load (11) operated by electric power supplied from the second power source (8); a second controller (10) that controls an operation of the second load (11) by a second program; an electric power disconnecting device (3) that connects or disconnects between the first power source (2) and the first load (41); and a third controller (12) that controls the electric power disconnecting device (3). When the first program is changed, the third controller (12) disconnects the first power source (2) from the first load (41) by the electric power disconnecting device (3) before a change process of the first program is started.

Abstract: A method for controlling an electric vehicle driven by a plurality of electric motors including a first electric motor, in which a lubricant, which is used for lubricating the electric motors and power transmission systems therefor, is used for cooling the electric motors is provided. The method includes setting torque distributions for the plurality of electric motors on the basis of a driving force required by the electric vehicle controlling the drive of the plurality of electric motors on the basis of the set torque distributions and circulating intermittently the lubricant used for cooling the first electric motor when the torque distribution set for the first electric motor is smaller than a predetermined value which is regarded as a reference value.

Abstract: The parking assistance method includes: measuring a first received voltage generated in a receiving coil; and assisting alignment between coils by presenting to a vehicle occupant a result of having determined whether or not power can be supplied on the basis of a potential difference previously obtained and the first received voltage. The previously obtained potential difference is a potential difference between a second received voltage of the receiving coil measured when the alignment between the coils is executed before assisting the alignment between the coils, and a third received voltage of the receiving coil measured after the alignment and the power supply are completed.

Abstract: A method for controlling a non-contact electric power supply system in which an electric power receiving coil mounted on a host vehicle is opposed to an electric power transmitting coil set on a ground, the non-contact electric power supply system supplying electric power from the electric power transmitting coil to the electric power receiving coil in a non-contact manner and, when a moving object is detected in a detection region around the electric power receiving coil or the electric power transmitting coil during the electric power supply, stopping or reducing the electric power supply, the method including: determining whether another vehicle is parked around the host vehicle; and expanding, when determining that the other vehicle is parked, the detection region as compared to when not determining that the other vehicle is parked.

Abstract: Provided is a cooling system for a power conversion device that includes a radiator, a radiator fan supplying air to the radiator, and a power conversion device including a plurality of electric components and a casing housing the plurality of electric components inside. The casing includes a base portion which is formed of a non-metallic material and on which the plurality of electric components is placed and a cover portion formed of a metallic material, fixed to the base portion, and covering a periphery of the plurality of electric components. A refrigerant channel through which a refrigerant cooling the plurality of electric components flows is formed in the base portion of the casing, and the casing is disposed at a position where an airflow of the radiator fan is applied to the cover portion.

Abstract: An electric motor is cooled by using a first refrigerant. The first refrigerant is cooled by heat exchange with a second refrigerant having a cooling target that is different from the first refrigerant, and the first refrigerant after being cooled by the heat exchange is supplied to the electric motor. The supply flow rate of the first refrigerant to the electric motor is reduced where a temperature of the first refrigerant is less than a first prescribed temperature as compared to where the temperature of the first refrigerant is greater than or equal to the first prescribed temperature. The supply flow rate of the first refrigerant is continuously reduced as long as a temperature of the second refrigerant is below a second prescribed temperature even after the temperature of the first refrigerant reaches the first prescribed temperature.

Abstract: The parking assistance method includes: measuring a first received voltage generated in a receiving coil; and assisting alignment between coils by presenting to a vehicle occupant a result of having determined whether or not power can be supplied on the basis of a potential difference previously obtained and the first received voltage. The previously obtained potential difference is a potential difference between a second received voltage of the receiving coil measured when the alignment between the coils is executed before assisting the alignment between the coils, and a third received voltage of the receiving coil measured after the alignment and the power supply are completed.

Abstract: A method for controlling a non-contact electric power supply system in which an electric power receiving coil mounted on a host vehicle is opposed to an electric power transmitting coil set on a ground, the non-contact electric power supply system supplying electric power from the electric power transmitting coil to the electric power receiving coil in a non-contact manner and, when a moving object is detected in a detection region around the electric power receiving coil or the electric power transmitting coil during the electric power supply, stopping or reducing the electric power supply, the method including: determining whether another vehicle is parked around the host vehicle; and expanding, when determining that the other vehicle is parked, the detection region as compared to when not determining that the other vehicle is parked.

Abstract: When a vehicle approaches a parking space, a ground controller excites a power transmission coil using an excitation pattern signal containing identification data, and a vehicle controller acquires the identification data from the excitation pattern signal received by at least one of subcoils. Then, a communication unit transmits the acquired identification data to the ground unit. The ground controller pairs the power transmission coil and the power reception coil with each other when the identification data contained in the excitation pattern signal and the identification data transmitted from the vehicle controller match each other. Also, the pairing is canceled if the identification data received by the subcoil provided on the front side and the identification data received by the subcoil provided on the rear side are different from each other.

Abstract: Provided is a coil position detection method for a non-contact power supply system, configured to supply power from a power transmission coil on a ground side to a power reception coil on a vehicle side, by which a position of the power reception coil is detected. Output terminals of a rectifier circuit configured to rectify AC power received by the power reception coil are connected to a drive circuit and a battery. Moreover, a relay switch is provided between the battery and one of the output terminals of the rectifier circuit. When the relay switch is on, the coil position is detected based on AC voltage detected by a first voltmeter provided upstream of the rectifier circuit and, when the relay switch is off, the coil position is detected based on DC voltage detected by a second voltmeter provided downstream of the rectifier circuit.

Abstract: A parking assist system is used in a wireless power supply system which performs wireless power supply between a ground-side coil unit and a vehicle-side coil unit. The parking assist system determines a position of a vehicle relative to each of a first region in which the power supply is possible when a gap between the vehicle-side coil unit and the ground-side coil unit is maximum and a second region in which the power supply is possible when the gap is minimum. The parking assist system determines possibility of the power supply, based on a result of the determination on the vehicle position, and displays a result of the determination on the possibility of the power supply, for an occupant of the vehicle.

Abstract: Provided is a coil position detection method for a non-contact power supply system, configured to supply power from a power transmission coil on a ground side to a power reception coil on a vehicle side, by which a position of the power reception coil is detected. Output terminals of a rectifier circuit configured to rectify AC power received by the power reception coil are connected to a drive circuit and a battery. Moreover, a relay switch is provided between the battery and one of the output terminals of the rectifier circuit. When the relay switch is on, the coil position is detected based on AC voltage detected by a first voltmeter provided upstream of the rectifier circuit and, when the relay switch is off, the coil position is detected based on DC voltage detected by a second voltmeter provided downstream of the rectifier circuit.

Abstract: When a vehicle approaches a parking space, a ground controller sets a power transmission coil to first excitation in which the power transmission coil is excited in an excitation pattern containing identification data. A vehicle controller pre-charges a capacitor connected to a power reception coil after the vehicle approaches the parking space. Further, the vehicle controller acquires the identification data when the power transmission coil is in the first excitation, and transmits the acquired identification data to the ground unit. The ground controller pairs a power transmission device and a power reception device with each other if the identification data contained in the excitation pattern and the identification data acquired by the vehicle controller match each other.

Abstract: A non-contact power supply system supplies power in a non-contact manner between a power transmission coil of a power supply device and a power reception coil of a vehicle. A vehicle side communication unit permits power transmission from the power transmission coil to the power reception coil with respect to one of several power supply devices and transmits a permission signal including identification information of the power supply device. A determination unit determines if a paired communication has been established between the vehicle and the power supply device. The power supply device has a communication unit that receives the permission signal. A controller controls power from the power transmission coil to the power reception coil when the identification information of a power supply device and the identification information in a permission signal match. The determination unit determines that a paired communication has been established when power is detected.

Abstract: A conductor arrangement structure for a wireless power supply system which is equipped with a ground-side device (3) that is installed on a ground side and has a power-feeding coil (L1) and a vehicle-side device (2) that is installed on a vehicle (1) and has a power-receiving coil (L2) and in which electric power is supplied from the ground-side device (3) to the vehicle-side device (2) without contact, wherein grounding wires (23) are arranged between the power-feeding coil (L1) and the power-receiving coil (L2) so as to extend over a high-potential portion and a low-potential portion of an electric field that is generated when the power-feeding coil (L1) is excited.

Abstract: A non-contact power supply system supplies power in a non-contact manner from a power transmission coil of a vehicle to a power reception coil of a power supply device. The power supply device has a power supply side recording means unit records information, a power supply side communication unit that communicates with the vehicle, and a power supply side controller that controls the power output from a power source to the power transmission coil. Vehicle identification information is recorded to the power supply side recording unit during the power supply or during preparation for the power supply to the power reception coil. The power supply side controller cross-checks the vehicle identification information and vehicle information transmitted from the vehicle when the power supply to the power reception coil is stopped before the power supply to the power reception coil is ended normally.

Abstract: The parking assistance device is used in a wireless power supply system which performs wireless power supply between the power transmitting coil on a ground side and the power receiving coil on a vehicle side, and includes: three or more coils aligned in one direction in a plan view of the vehicle, the coils configured to detect magnetic flux in a height direction of the vehicle which is generated by the power transmitting coil; and a misalignment detection unit configured to detect misalignment between the power transmitting coil and the power receiving coil in the one direction, based on a decrease in the magnetic flux in the height direction of the vehicle which is detected by the three or more coils.

Abstract: There is provided a vehicle-side charging apparatus disposed in a vehicle (2). The charging apparatus includes a power receiving coil (21) which receives power from a power transmitting coil (11) disposed in a power feeding apparatus (1) in a non-contacting manner through at least magnetic coupling, a battery (25) which is charged by reception power of the power receiving coil (21), and a vehicle-side controller (20) which controls battery charge of the battery and outputs a command of a power feeding amount to the power feeding apparatus. The power feeding amount is an amount of power feeding from the power transmitting coil to the power receiving coil. The vehicle-side controller (20) determines whether or not the vehicle (2) is to be started.

Abstract: A non-contact power supply system supplies electricity in a non-contact manner between a power transmission coil of a power supply device 1 and a power reception coil of a vehicle. The vehicle 2 has a wireless communication unit that transmits to the power supply device a startup signal that starts up the power supply device. The power supply device has a reception unit that receives the startup signal. A controller controls the power supply device based on the startup signal. The communication unit transmits a first startup signal when the vehicle is traveling, and transmits a second startup signal when the vehicle is stopped. The controller controls the electricity supply device according to a first control flow when the first startup signal has been received, and controls the power supply device according to a second control flow when the second startup signal has been received.