Patent application number | Description | Published |
20110109263 | RESONANCE TYPE NON-CONTACT CHARGING APPARATUS - A resonance type non-contact charging system is disclosed that includes a resonance system. The resonance system has a primary side resonance coil, a secondary side resonance coil, a power converting section having a DC/DC converter, and a battery. The charging system has a controlling section that controls the DC/DC converter. The controlling section controls the duty cycle of the DC/DC converter such that the input impedance of the resonance system at the resonant frequency and the output impedance of a high-frequency power source match each other. | 05-12-2011 |
20110227421 | NON-CONTACT POWER TRANSMISSION APPARATUS AND DESIGN METHOD - A non-contact power transmission apparatus is disclosed. The non-contact power transmission apparatus includes an alternating-current power source and a resonant system. The resonant system includes a primary coil connected to the alternating-current power source, a primary-side resonance coil, a secondary-side resonance coil, and a secondary coil is connected to a load. The apparatus also has a first capacitor and a second capacitor. A first resonant frequency, which is a resonant frequency of the primary-side resonance coil and the first capacitor, and a second resonant frequency, which is a resonant frequency of the secondary-side resonance coil and the second capacitor, are set to be equal to each other. The frequency of an alternating voltage of the alternating-current power source is set to match with the first resonant frequency and the second resonant frequency. | 09-22-2011 |
20110241440 | NON-CONTACT POWER TRANSMISSION APPARATUS AND POWER TRANSMISSION METHOD USING A NON-CONTACT POWER TRANSMISSION APPARATUS - Disclosed is a non-contact power transmission apparatus provided with an AC power source and a resonant system. The resonant system has a primary coil that is connected with the AC power source, a primary-side resonance coil, a secondary-side resonance coil, a secondary coil and a load that is connected with the secondary coil. In addition, the non-contact power transmission apparatus is provided with a state detection unit and a variable-impedance circuit. The state detection unit detects the state of the resonant system. The variable-impedance circuit is constructed so as to adjust its own impedance in accordance with the state of the resonant system detected by the state detection unit, in such a way that the input impedance and the output impedance at the resonant frequency of the resonant system are matching. | 10-06-2011 |
20110298294 | NON-CONTACT POWER TRANSMISSION DEVICE AND DESIGN METHOD THEREOF - A non-contact power transmission device is disclosed. The resonant system includes a primary coil connected to the AC power source, a primary resonance coil, a secondary resonance coil, and a secondary coil is connected to the load. When the relationship between an input impedance of the resonant system and a frequency of an AC voltage of the AC power source is shown in a graph, the frequency of the AC voltage of the AC power source is set between a first frequency at which the input impedance has a local maximum value, and a second frequency that is greater than the first frequency and at which the input impedance has a local minimum value. | 12-08-2011 |
20120025761 | RESONANCE TYPE NON-CONTACT POWER SUPPLY SYSTEM FOR VEHICLE AND ELECTRIC VEHICLE - A resonance type non-contact power supply system is provided that includes power supplying equipment and an electric vehicle. The power supply equipment includes an alternating-current power source and a primary-side resonance coil for receiving power from the alternating-current power source. The electric vehicle includes power receiving equipment and a vehicle height control device mounted on the electric vehicle. The power receiving equipment includes a secondary-side resonance coil that receives power from the primary-side resonance coil, a rectifier that rectifies the power received by the secondary-side resonance coil, and an electrical storage device, to which the power rectified by the rectifier is supplied. A resonance system that includes the primary-side resonance coil and the secondary-side resonance coil is configured such that impedance thereof is adjusted by the use of the vehicle height control device when the electrical storage device is charged. | 02-02-2012 |
20120104998 | NON-CONTACT POWER TRANSMISSION DEVICE - A non-contact power transmission device includes an alternating current power supply, a resonant system, a load, an impedance measuring section and an analyzing section. The resonant system has a primary coil connected to the alternating current power supply, a primary-side resonant coil, a secondary-side resonant coil and a secondary coil. The load is connected to the secondary coil. The impedance measuring section can measure the input impedance of the resonant system. The analyzing section analyzes the measurement results obtained from the impedance measuring section. | 05-03-2012 |
20120242286 | RESONANCE TYPE NON-CONTACT CHARGING DEVICE - A resonance type non-contact charging device includes a high frequency power source, a primary side resonant coil, a secondary side resonant coil, a charger, a secondary battery, and a stop control unit. The primary side resonant coil receives supply of high frequency electric power from the high frequency power source. The secondary side resonant coil is arranged apart from the primary side resonant coil in a non-contact manner. The secondary side resonant coil receives electric power from the primary side resonant coil through magnetic field resonance between the primary side resonant coil and the secondary side resonant coil. The charger receives supply of high frequency electric power from the secondary side resonant coil. The secondary battery is connected to the charger. The stop control unit stops the high frequency power source before stopping the charger when charging is to be stopped. | 09-27-2012 |
20120242287 | RESONANCE TYPE NON-CONTACT CHARGING DEVICE - A resonance type non-contact charging device includes a high frequency power source, a primary side resonant coil, a secondary side resonant coil, a charger, a secondary battery, and a stop control unit. The primary side resonant coil receives supply of high frequency electric power from the high frequency power source. The secondary side resonant coil is arranged apart from the primary side resonant coil in a non-contact manner. The secondary side resonant coil receives electric power from the primary side resonant coil through magnetic field resonance between the primary side resonant coil and the secondary side resonant coil. The charger receives supply of high frequency electric power from the secondary side resonant coil. The secondary battery is connected to the charger. The stop control unit stops the high frequency power source before stopping the charger when charging is to be stopped. | 09-27-2012 |
20120306439 | VEHICLE CHARGING APPARATUS - A vehicle includes a power reception terminal, a charger and a non-contact power reception unit. The power reception terminal is configured to be electrically connectable to an AC power supply. The charger is configured to convert AC electric power inputted from the power reception terminal to a predetermined DC voltage. The non-contact power reception unit is configured to be magnetically coupled to a power transmission unit of an AC power supply to receive electric power from the AC power supply in a non-contact manner. The non-contact power reception unit is connected to a power conversion circuit of the charger, | 12-06-2012 |
20130057082 | NON-CONTACT POWER RECEPTION SYSTEM AND NON-CONTACT POWER TRANSMISSION SYSTEM - A non-contact power reception system comprising movable body equipment including a secondary-side coil for receiving, in a non-contact manner, electric power from a primary-side coil, which receives electric power from an AC power source, a rectifier, which rectifies electric power received by the secondary-side coil, and an electrical storage device, which is connected to rectifier, wherein the movable body equipment includes a matching unit located between the secondary-side coil and the rectifier, and the non-contact power reception system is configured to bring the matching unit into a mismatch state when electric power is being received from the primary-side coil in a state in which the movable body equipment should refuse power reception. | 03-07-2013 |
20130057207 | POWER FEEDING SYSTEM AND VEHICLE - A power feeding system is provided, in which a detected value of reflected power at a power supply device in a power feeding installation is sent from the power feeding installation to a vehicle via a first communication device, the vehicle has an impedance matching device for adjusting an impedance at a resonance system that is constituted of a power transmission resonator, including a primary self-resonant coil and a primary coil in the power feeding installation, and a power receiving resonator, including a secondary self-resonant coil and a secondary coil in the vehicle, and the impedance matching device is controlled based on the detected value of the reflected power at the power supply device, which has been received from the power feeding installation. | 03-07-2013 |
20130057208 | POWER RECEPTION EQUIPMENT FOR RESONANCE-TYPE NON-CONTACT POWER SUPPLY SYSTEM - Power reception equipment ( | 03-07-2013 |
20130063085 | RESONANCE-TYPE NON-CONTACT POWER SUPPLY SYSTEM - Movable body equipment is provided with: a secondary-side resonance coil, which receives power from a primary-side resonance coil of power supply equipment; a rectifier, which rectifies the power received by the secondary-side resonance coil; and a secondary battery, to which to which the power rectified by the rectifier is supplied. A resonance-type non-contact power supply system is provided with: state of charge detection units, which detect the state of charge of the secondary battery; and an impedance estimation unit, which estimates an impedance estimation value for the secondary battery on the basis of the state of charge of the secondary battery. When the absolute value of the difference between the impedance estimation value and the current impedance value of the secondary battery exceeds a threshold, a determination unit determines that a foreign body is present between the primary-side resonance coil and the secondary-side resonance coil. | 03-14-2013 |
20130119781 | RESONANCE TYPE NON-CONTACT POWER SUPPLY SYSTEM - A power supplying equipment includes an alternating-current power source and a primary-side resonance coil. A movable body equipment includes a secondary-side resonance coil a rectifier, and a secondary battery to which the power rectified by the rectifier is supplied. The power supplying equipment further includes a primary matching unit provided between the alternating-current power source and the primary-side resonance coil, and a primary matching unit adjusting section for adjusting the primary matching unit. The primary matching unit adjusting section adjusts the primary matching unit only at times other than when detecting the distance between the primary-side resonance coil and the secondary-side resonance coil. | 05-16-2013 |
20130193913 | RESONANCE-TYPE NON-CONTACT POWER SUPPLY SYSTEM, AND ADJUSTMENT METHOD FOR MATCHING UNIT DURING CHARGING OF RESONANCE-TYPE NON-CONTACT POWER SUPPLY SYSTEM - Power supply equipment ( | 08-01-2013 |
20140239779 | INVERTER-INTEGRATED ROTATING ELECTRICAL APPARATUS - An inverter-integrated rotating electrical apparatus includes a rotating electrical machine and an inverter case. The rotating electrical machine has a housing. The housing has an end wall, which is located at an axial end of the rotating electrical machine. The inverter case accommodates inverter components fixed to the outer surface of the end wall of the housing. The inverter case includes a metal plate portion that faces the end wall of the housing. The metal plate portion forms a heat sink for cooling the inverter components. The metal plate portion has thereon cooling fins located on the outer surface of the inverter case. The metal plate portion also includes therein an accommodating recess located inside the inverter case. The accommodating recess is recessed toward the end wall of the housing and accommodates a capacitor, which is an inverter component. | 08-28-2014 |