Method, apparatus, and computer readable medium for controlling a wireless charging device

Patent metadata

Field	Value
Publication number	US-9738169-B2
Application number	US-201414562833-A
Country	US
Kind code	B2
Filing date	Dec 8, 2014
Priority date	Aug 14, 2014
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

A method for controlling a wireless charging device includes: receiving information sensed by at least one of a yaw rate sensor, a gyro sensor, and a tire pressure sensor of a vehicle; calculating a longitudinal/transversal gradient of the vehicle according to the received information; and adjusting a height or a gradient of a receiving pad equipped in the vehicle or adjusting a height, a gradient, a transmission power, or a frequency of a transmitting pad corresponding to the receiving pad, based on the calculated longitudinal/transversal gradient.

First claim

What is claimed is:

1. A method for controlling a wireless charging device, comprising:
receiving information sensed by at least one of a yaw rate sensor, a gyro sensor, and a tire pressure sensor of a vehicle;
calculating a longitudinal/transversal gradient of the vehicle according to the received information;
adjusting a height or a gradient of a receiving pad equipped in the vehicle or adjusting a height, a gradient, a power transmitted to the receiving pad, or a frequency of a transmitting pad corresponding to the receiving pad, based on the calculated longitudinal/transversal gradient;
transmitting power and frequency information, including a required power and frequency of the receiving pad, to the transmitting pad;
calculating power transmission efficiency based on the power and frequency information and power transmitted to the receiving pad; and
re-adjusting the height of the receiving pad when the calculated power transmission efficiency is equal to or less than a present tolerance.

2. The method of claim 1 , wherein in the adjusting, the height or the gradient of the receiving pad or that of the transmitting pad is adjusted, such that the transmitting pad is positioned in parallel with the receiving pad, and an interval between the transmitting pad and the receiving pad is less than a preset reference value.

3. The method of claim 1 , wherein in the adjusting, the height or the gradient of the receiving pad or that of the transmitting pad is adjusted, such that angles of the receiving pad and the transmitting pad, with respect to a straight line connecting central points of the receiving pad and the transmitting pad, are right angles.

4. The method of claim 1 , wherein in the adjusting, the height or the gradient of the receiving pad or that of the transmitting pad is adjusted based on an interval of a portion where a distance between the transmitting pad and the receiving pad is closest, such that the transmitting pad and the receiving pad are positioned in parallel with each other.

5. The method of claim 1 , wherein the adjusting is performed when the calculated longitudinal/transversal gradient is higher than a preset gradient.

6. The method of claim 1 , further comprising:
after the calculating of the power transmission efficiency or the re-adjusting of the height of the receiving pad, transmitting an instruction to the transmitting pad to maintain the height of the transmitting pad and the required power and frequency pad, when the calculated power transmission efficiency exceeds a preset tolerance.

7. The method of claim 1 , further comprising:
after the calculating of the power transmission efficiency or the re-adjusting of the height of the receiving pad, storing the height of the transmitting pad and the required power and frequency of the receiving pad, when the calculated power transmission efficiency exceeds a preset tolerance.

8. The method of claim 1 , wherein the transmitting pad is one of a plurality of transmitting pads.

9. The method of claim 8 , further comprising:
after the calculating of the longitudinal/transversal gradient, retrieving pre-stored charging information of each of the plurality of transmitting pads when the vehicle approaches the plurality of transmitting pads,
wherein the adjusting is performed based on the retrieved charging information when the charging information of a transmitting pad to which the vehicle is approaching is retrieved.

10. The method of claim 9 , wherein the pre-stored charging information includes one or more of a height, a transmission power, and frequency information of the plurality of transmitting pads at a time of pre-charging, the plurality of transmitting pads being arranged depending on positions thereof as determined by a global positioning system (GPS).

11. An apparatus for controlling a wireless charging device, comprising:
a memory storing program instructions; and
a processor configured to execute the stored program instructions, which when executed perform a process including:
receiving information sensed by at least one of a yaw rate sensor, a gyro sensor, and a tire pressure sensor of a vehicle,
calculating a longitudinal/transversal gradient of the vehicle according to the received information,
adjusting a height or a gradient of a receiving pad equipped in the vehicle or adjusting a height, a gradient, a power transmitted to the receiving pad, or a frequency of a transmitting pad corresponding to the receiving pad, based on the calculated longitudinal/transversal gradient,

transmitting power and frequency information, indicating a required power and frequency of the receiving pad, to the transmitting pad,
calculating power transmission efficiency based on the power and frequency information and power transmitted to the receiving pad, and
re-adjusting the height of the receiving pad when the calculated power transmission efficiency is equal to or less than a preset tolerance.

12. A non-transitory computer readable medium containing program instructions for controlling a wireless charging device, the computer readable medium comprising:
program instructions that receive information sensed by at least one of a yaw rate sensor, a gyro sensor, and a tire pressure sensor of a vehicle;
program instructions that calculate a longitudinal/transversal gradient of the vehicle according to the received information;
program instructions that adjust a height or a gradient of a receiving pad equipped in the vehicle or adjusting a height, a gradient, a power transmitted to the receiving pad, or a frequency of a transmitting pad corresponding to the receiving pad, based on the calculated longitudinal/transversal gradient;
program instructions that transmit power and frequency information, indicating a required power and frequency of the receiving pad, to the transmitting pad;
program instructions that calculate power transmission efficiency based on the power and frequency information and power transmitted to the receiving pad; and
program instructions that re-adjust the height of the receiving pad when the calculated power transmission efficiency is equal to or less than a preset tolerance.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Kim Do Hoon
• Kim Zeung Il

Classifications

• Y02T90/14

  Plug-in electric vehicles · CPC title

• B60L53/34

  Plug-like or socket-like devices specially adapted for contactless inductive charging of electric vehicles (positioning means for charging devices using inductive energy transfer B60L53/38) · CPC title

• B60L2230/14

  Operations & Transport · mapped topic

• Y02T10/7005

  Cross-Sectional Technologies · mapped topic

• Y02T90/121

  Cross-Sectional Technologies · mapped topic