Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Jidoshokki

Aisin Seiki Kabushiki Kaisha

Nippon Steel Corporation

Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Nippon Steel Materials Co., Ltd.

Kabushiki Kaisha Toyota Jikoshikki

Kabushiki Kaisha Toyota Jidoshokki and Toyota Jidosha Kabushiki Kaisha

Yukihiro Yamamoto

Shinji Ichikawa

Sadanori Suzuki

Shimpei Sakoda

Kazuyoshi Takada

Toru Nakamura

Tetsuhiro Ishikawa

Masaru Sasaki

Katsu Hattori

Kenichi Nakata

Taira Kikuchi

Kenji Itagaki

Wanleng Ang

Atsushi Mizutani

Hiroki Sawada

Yoshinori Fujitake

Kenji Murasato

Yasuaki Hiraki

Yoshikazu Kataoka

Shingo Ieda

Koji Ito

Tomohiro Uno

Takaaki Itou

Kazuo Suzuki

Morio Sakai

Kouji Yoshizaki

Masaki Mori

Kazuo Yoshida

Toshiro Maeda

Tomonori Suzuki

Noriko Yamada

Masachika Kamiya

Tadashi Kondo

Hiroshi Katsunaga

Takuzou Kako

Hiroki Satta

Koji Nakamura

Yutaka Nakashima

Kazuji Yamazaki

Hiroshi Miyake

Yuuji Nakashima

Atsuhisa Ando

Yoshikazu Suzumura

Power supply equipment () is provided with an AC power supply () and a primary-side resonance coil (). Movable body equipment () is provided with a secondary-side resonance coil (), which receives power from the primary-side coil, a rectifier (), which rectifies the received power, a charger () to which the rectified power is supplied, and a secondary battery (), which is connected to the charger. A primary matching unit () is provided between the AC power supply () and the primary-side resonance coil (). A secondary matching unit () is provided between the secondary-side resonance coil () and the rectifier (). A control unit is provided to either the power supply equipment () or the movable body equipment (). The control unit controls a primary matching unit adjustment unit () and a secondary matching unit adjustment unit (). In order to efficiently transfer power from the primary side to the secondary side when charging the secondary battery, the control unit initially adjusts the secondary matching unit (). After adjusting the secondary matching unit (), the control unit adjusts the first matching unit ().

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 side equipment comprises a high-frequency power supply, a matching box, a primary side resonance coil, an output impedance variable unit, a matching state detection unit, and a control unit. By a magnetic field resonance, the primary side resonance coil transmits power in a non-contact manner to a load through a secondary side resonance coil. At least the matching box, the primary side resonance coil, the secondary side resonance coil, and the load constitute a resonance system having a resonant frequency. The matching state detection unit detects the matching state between the input impedance of the resonance system and the output impedance of the high-frequency power supply at the resonant frequency. The control unit adjusts the output impedance variable unit and the matching box according to the detection result by the matching state detection unit so that the input impedance of the resonance system and the output impedance of the high-frequency power supply match each other.

Power supply side equipment and resonance-type non-contact power supply system

A charging system includes a locking device locking a connector provided at the end of a cable in the state where the connector is connected to an inlet provided in a vehicle; a release button for releasing locking by the locking device; a switch generating a signal indicating that the connector and the inlet are connected; a horn; and an ECU. In response to the operation of the release button, the switch stops generation of the signal. The ECU controls charging of a power storage device and detects whether the signal is issued or not. In the case where the ECU detects that generation of the signal is stopped during charging of the power storage device, the ECU causes the horn to issue an alarm.

Charging system

Power reception equipment () is provided with: a secondary side resonance coil () which receives power from a primary side resonance coil () of power supply equipment (); and a rectifier () which rectifies the received power. The power reception equipment is further provided with: a secondary matching unit () which is provided between the secondary side resonance coil () and the rectifier (); a charger () to which rectified electric power is supplied; a power storage device () which is connected to the charger; and a control unit () which adjusts the secondary matching unit when the power storage device is being charged. The control unit stores, as data on a storage device (), the relationship between the charge power from the power supply equipment during the power ascension phase and the matching status of the secondary matching unit () when charging. During the phase in which the power output from the supply equipment is reduced, the control unit adjusts, on the basis of the data stored in the storage device during the power ascension phase, the secondary matching unit () so as to reach a suitable status corresponding to the charge power.

Power reception equipment for resonance-type non-contact power supply system

A non-contact power transmission apparatus includes a high-frequency converting section, which converts input voltage to high-frequency voltage and outputs it, a primary coil, which receives high-frequency voltage from the high-frequency converting section, and a secondary coil, which receives electric power from the primary coil. The non-contact power transmission apparatus further includes a load to which the electric power received by the secondary coil is supplied, a rectifier located between the secondary coil and the load, and an output adjusting section, which supplies, as pulses, output voltage to the high-frequency converting section. The output adjusting section is configured to increase or reduce output to the load by adjusting a duty cycle of the pulse output.

Non-contact power transmission apparatus

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.

Resonance-type non-contact power supply system

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.

Power feeding system and vehicle

In a charging system for a vehicle for charging a power storage device, including the vehicle having the power storage device, and a charging cable for transmitting electric power supplied from an external power supply outside of the vehicle to the power storage device, charging information about charging performed by a charging device is set based on a signal generated by operation of an operation switch provided on a charging connector. This configuration can improve operability during charging.

Vehicle, charging cable, and charging system for vehicle

A resonance type non-contact charging apparatus is disclosed. A charger of the apparatus receives the high frequency power from a secondary side resonance coil of the apparatus. A power ratio detecting section of the apparatus detects the ratio of the reflected power from a primary side resonance coil to the high frequency power source with respect to the output power from the high frequency power source to the primary side resonance coil. A stop control section of the apparatus stops the high frequency power source when the ratio detected by the power ratio detecting section becomes greater than or equal to a predetermined threshold value.

Resonance type non-contact charging apparatus

In a noncontact electric power feeding system using a resonance method, electrical equipment installed within a coil case is configured to include an electric power receiving antenna and a rectifier in an integrated manner. The electrical equipment is driven by receiving electric power from an electromagnetic field generated by electromagnetic resonance, without power supply from the outside of the coil case.

Noncontact electric power receiving device, noncontact electric power transmitting device, noncontact electric power feeding system, and 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.

Resonance type non-contact power supply system for vehicle and electric vehicle

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.

Resonance type non-contact charging device

A conversion adaptor enables utilization of a standardized charge cable used when a power storage device mounted on an electrically-powered vehicle is charged by a power source provided outside of the vehicle as a universal cable for transmitting electric power to electric loads having different plug shapes that are respectively standardized from one region to another. Conversion adaptor includes a primary side connector unit configured to be connectable to a connector of charge cable, a secondary side connector unit configured so as to have a plug of an electric load, such as a home electric appliance, connected thereto, and a manipulating unit for manipulating a CCID of charge cable so that relays are switched off when connector of charge cable is connected to first connector unit.

Plug conversion adaptor

Growing community of inventors

Kariya, Japan

Yukihiro Yamamoto