VEHICLE DRIVING SYSTEM HAVING WIRELESS POWER TRANSMISSION FUNCTION AND METHOD THEREOF

• US 20150003569A1
• Filed: 12/23/2013
• Published: 01/01/2015
• Est. Priority Date: 06/26/2013
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: JI, Sang Woo
• Granted Patent: US 9,584,190 B2
• Time in Patent Office: Days
• US Class Current: 375/340
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: H04B 1/16 Circuits
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• 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 90/14 Plug-in electric vehicles

Abstract

A vehicle driving system having a wireless power transmission function includes a driving controller configured to generate a high frequency AC voltage corresponding to a device by using a DC voltage applied from a battery within a vehicle and generate a magnetic field by applying the generated high frequency AC voltage to a primary coil. A smoother is configured to smooth an AC voltage induced by a secondary coil into a predetermined level of DC voltage and supply a constant voltage to the device, wherein the device is operated based on the constant voltage supplied from the smoother.

Claims

1. A vehicle driving system having a wireless power transmission function, comprising:

a driving controller configured to generate a high frequency AC voltage corresponding to a device by using a DC voltage applied from a battery within a vehicle and generate a magnetic field by applying the generated high frequency AC voltage to a primary coil; and

a smoother configured to smooth an AC voltage induced by a secondary coil into a predetermined level of DC voltage and supply a constant voltage to the device,

wherein the device is operated based on the constant voltage supplied from the smoother.

2. The vehicle driving system according to claim 1, wherein the driving controller is mounted at a knuckle of the vehicle, and the smoother is mounted at a hub bearing of the vehicle.

3. The vehicle driving system according to claim 1, wherein the driving controller includes:

a power transmitter which uses the DC voltage applied from the battery to generate a high frequency DC voltage corresponding to a constant voltage and a constant current required for the device;

the primary coil, which generates a magnetic field based on the high frequency AC voltage generated by the power transmitter; and

a second controller, which controls the power transmitter to generate the high frequency AC voltage corresponding to the constant voltage and the constant current of the device.

4. The vehicle driving system according to claim 3, further comprising:

a data receiver configured to receive data from the smoother through the primary coil.

5. The vehicle driving system according to claim 1, wherein the smoother includes:

the secondary coil which is magnetically coupled with the primary coil to generate an induced electromotive force;

a power receiver which smoothes the AC voltage induced by the secondary coil into the predetermined level of DC voltage and supplies the constant voltage to the device; and

a third controller which controls the power receiver to smooth the AC voltage induced by the secondary coil into the predetermined level of DC voltage and supply the constant voltage to the device.

6. The vehicle driving system according to claim 5, further comprising:

a data transmitter configured to transmit data to the driving controller,

wherein the driving controller controls the data transmitter to synchronize and transmit the data at a falling time of the AC voltage induced by the secondary coil at the time of receiving the data from the device.

7. The vehicle driving system according to claim 1, wherein the device is any one of a tire pressure monitoring system (TPMS) sensor, a wheel lighting system, a hot wire tire, and a variable wheel.

8. A vehicle driving system having a wireless power transmission function, comprising:

a driving controller configured to generate a high frequency AC voltage corresponding to a wheel lighting system by using a DC voltage applied from a battery within a vehicle and generate a magnetic field by applying the generated high frequency AC voltage to a primary coil; and

a smoother configured to smooth an AC voltage induced by a secondary coil into a predetermined level of DC voltage and supply a constant voltage to the wheel lighting system,

wherein at least one wheel lighting system is mounted at one side and another side of a wheel and is operated based on the constant voltage supplied from the smoother.

9. A vehicle driving system having a wireless power transmission function, comprising:

a driving controller configured to generate a high frequency AC voltage corresponding to a variable wheel by using a DC voltage applied from a battery within a vehicle and generate a magnetic field by applying the generated high frequency AC voltage to a primary coil; and

a smoother configured to smooth an AC voltage induced by a secondary coil into a predetermined level of DC voltage and supply a constant voltage to the variable wheel,

wherein the variable wheel is operated based on the constant voltage supplied from the driving unit and stops a groove on a surface of the wheel during the driving of the vehicle to prevent fuel efficiency from reducing due to an aerodynamic force.

10. The vehicle driving system according to claim 9, wherein the variable wheel includes:

a cover which covers the groove on the surface of the wheel;

a motor which reciprocally rotates the cover; and

a motor controller which controls the motor.

11. A method of driving a device of a vehicle including a driving controller mounted at a knuckle of the vehicle and a smoother mounted at a hub bearing of the vehicle, the method comprising:

generating, by the driving controller, a high frequency AC voltage corresponding to the device by using a DC voltage applied from a battery;

generating, by the driving controller, a magnetic field by applying the generated high frequency AC voltage to a primary coil;

smoothing, by the smoother, the AC voltage induced by a secondary coil into a predetermined level of DC voltage; and

supplying, by the smoother, a constant voltage to the device.

12. The method according to claim 11, further comprising:

synchronizing and transmitting, by the smoother, received data at a falling time of the AC voltage induced by the secondary coil at the time of receiving the data from the device.

13. The method according to claim 12, further comprising:

receiving, by the driving controller, the data from the smoother through the primary coil.