POWER RECEIVING DEVICE, POWER TRANSMITTING DEVICE, AND ELECTRIC VEHICLE

• US 20150246617A1
• Filed: 05/18/2015
• Published: 09/03/2015
• Est. Priority Date: 11/20/2012
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Yamada, Akiko, Obayashi, Shuichi, SHIJO, Tetsu
• Application Number:
  US14/715,063
• Publication Number:
  US 20150246617A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/124 Detection or removal of foreign bodies
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles

Abstract

In one embodiment, a power receiving device includes a power receiving inductor wirelessly receiving electric power from a power transmitting device, a capacitor unit connected to the power receiving inductor, a communication unit exchanging a power transmission status or a power reception status with the power transmitting device, a sensor unit performing at least one of received power detection, foreign object detection, and temperature detection, and a control unit controlling received power based on information received by the communication unit or a result of the detection performed by the sensor unit. The power receiving inductor includes a magnetic core, a coil winding, and a conductor plate. The magnetic core is provided in a detachable unit detachably attached to a housing of the power receiving device. The sensor unit is provided outside the detachable unit.

Claims

1. A power receiving device comprising:

a power receiving inductor wirelessly receiving electric power from a power transmitting device through mutual inductance;

a capacitor unit connected to the power receiving inductor;

a rectifier converting AC power received via the capacitor unit into DC power;

a communication unit exchanging a power transmission status or a power reception status with the power transmitting device;

a sensor unit performing at least one of received power detection, foreign object detection, and temperature detection; and

a control unit controlling received power based on information received by the communication unit or a result of the detection performed by the sensor unit, wherein

the power receiving inductor includes a magnetic core, a coil winding, and a conductor plate,

the magnetic core is provided in a detachable unit detachably attached to a housing of the power receiving device, and

the sensor unit is provided outside the detachable unit.

2. The device according to claim 1, wherein at least one of the coil winding and the conductor plate is provided in the detachable unit.

3. The device according to claim 1, wherein the capacitor unit is provided in the detachable unit.

4. The device according to claim 3, wherein the rectifier is provided in the detachable unit.

5. The device according to claim 1, wherein a heat dissipation unit dissipating heat generated at the power receiving inductor at the time of power reception is attached to a lid of the housing.

6. The device according to claim 5, wherein a heat insulating unit is provided between the lid and the heat dissipation unit.

7. The device according to claim 1, further comprising a moving unit moving the detachable unit to a predetermined position.

9. An electric vehicle comprising the power receiving device of claim 1.

10. The electric vehicle according to claim 9, wherein the detachable unit is detachable via a bottom portion of a trunk.

8. A power receiving device comprising:

a first power receiving inductor wirelessly receiving electric power from a power transmitting device through first mutual inductance;

a capacitor unit connected to the first power receiving inductor;

a second power receiving inductor connected to the first power receiving inductor through second mutual inductance;

a rectifier converting AC power received via the second power receiving inductor into DC power;

a communication unit exchanging a power transmission status or a power reception status with the power transmitting device;

a sensor unit performing at least one of received power detection, foreign object detection, and temperature detection; and

a control unit controlling received power based on information received by the communication unit or a result of the detection performed by the sensor unit, wherein

the first power receiving inductor and the capacitor unit are provided in a detachable unit detachably attached to a housing of the power receiving device, and

the sensor unit is provided outside the detachable unit.

11. A power transmitting device comprising:

a power source unit supplying a high-frequency power source;

a power transmitting inductor wirelessly transmitting electric power from the power source unit to a power receiving device through mutual inductance;

a communication unit exchanging a power transmission status or a power reception status with the power receiving device;

a sensor unit performing at least one of transmitted power detection, foreign object detection, and temperature detection; and

a control unit controlling transmitted power based on information received by the communication unit or a result of the detection performed by the sensor unit, wherein

the power transmitting inductor includes a magnetic core,

the magnetic core is provided in a detachable unit detachably attached to a housing of the power transmitting device, and

the sensor unit is provided outside the detachable unit.