Wireless power transfer system for vehicle door glass

• US 10,654,343 B2
• Filed: 11/13/2018
• Issued: 05/19/2020
• Est. Priority Date: 09/12/2018
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.), Omron Automotive Electronic Korea Co., Ltd.
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Kang, Kwan Hui, Gweon, Sang Hoon, Hwang, Joon Koo, Lee, Dong Hee
• Primary Examiner(s): Amaya, Carlos
• Application Number:
  US16/190,036
• Publication Number:
  US 20200079190A1
• Time in Patent Office: 553 Days
• CPC Class Codes: B60J 3/04 adjustable in transparency
• CPC Class Codes: B60J 5/0402 window frame details, including sash guides and glass runs
• CPC Class Codes: B60J 5/0413 Inner panel, e.g. characterised by carrying components
• CPC Class Codes: B60R 16/027 between relatively movable parts of the vehicle, e.g. between steering wheel and column devices for measuring, signalling or controlling tyre pressure or temperature specially adapted for mounting on vehicles B60C23/00
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: E05F 11/382 for vehicle windows E05F11/40 - E05F11/52 take precedence
• CPC Class Codes: E05Y 2201/64 Carriers
• CPC Class Codes: E05Y 2400/65 Power or signal transmission
• CPC Class Codes: E05Y 2400/66 Wireless transmission
• CPC Class Codes: E05Y 2800/106 Lighting
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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: H02M 1/0003 Details of control, feedback or regulation circuits
• CPC Class Codes: H02M 1/007 Plural converter units in cascade push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826
• CPC Class Codes: H02M 1/008 Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
• CPC Class Codes: H02M 3/33561 having more than one ouput with independent control
• CPC Class Codes: H02M 7/02 Conversion of ac power input into dc power output without possibility of reversal
• CPC Class Codes: H02M 7/42 Conversion of dc power input into ac power output without possibility of reversal

Abstract

A wireless power transfer system for a vehicle door glass may include a power transmitter including a first converter converting DC power from a battery into AC power, a transmitting coil wirelessly transmitting the AC power received from the first converter, and a transmitter controller controlling a power level to be output from the first converter; and a power receiver including a receiving coil wirelessly receiving the AC power from the transmitting coil, a second converter and a third converter connected to the receiving coil, and a receiver controller controlling a power level to be output from the second converter and the third converter, wherein the power transmitter is mounted on a vehicle door, and the power receiver is mounted on a door glass.

Claims

1. A wireless power transfer system for a vehicle door glass, wirelessly supplying power to a plurality of electric loads provided on the vehicle door glass, the wireless power transfer system comprising:

a power transmitter including;

a first converter configured for converting DC power of a battery into AC power;

a transmitting coil configured for wirelessly transmitting the AC power received from the first converter;

a transmitter controller configured for controlling a power level to be output from the first converter;

a board on which the first converter, the transmitting coil, and the transmitter controller are mounted; and

a power receiver including;

a receiving coil configured for wirelessly receiving the AC power from the transmitting coil;

a second converter connected to the receiving coil;

a receiver controller configured for controlling a power level to be output from the second converter; and

a body on which the receiving coil, the second converter, and the receiver controller are mounted,

wherein the board of the power transmitter is mounted on a vehicle door,

wherein the body of the power receiver is mounted on the door glass, and

wherein the body has a coupler which is coupled to a bottom end portion of the door glass.

2. The wireless power transfer system of claim 1, wherein the second converter converts the AC power received from the receiving coil into power for the plurality of electric loads.

3. The wireless power transfer system of claim 1, farther including:

a manipulation device generating a control signal for operating the plurality of electric loads,

wherein the manipulation device is electrically connected to the transmitter controller.

4. The wireless power transfer system of claim 3,

wherein the transmitter controller is configured to control the power level to be output from the first converter according to the control signal received from the manipulation device.

5. The wireless power transfer system of claim 3,

wherein the power transmitter further includes a first signal transceiver connected to the transmitter controller, and

wherein the power receiver further includes a second signal transceiver connected to the receiver controller.

6. The wireless power transfer system of claim 5,

wherein the first signal transceiver transmits the control signal to the second signal transceiver through wireless communication, and

wherein the second signal transceiver transmits a feedback signal related to operations of the plurality of electric loads to the first signal transceiver through wireless communication.

7. The wireless power transfer system of claim 6, wherein the receiver controller is configured to control the power level to be output from the second converter according to the control signal received through the second signal transceiver.

8. The wireless power transfer system of claim 1,

wherein the transmitter controller is electrically connected to the battery, and

wherein the transmitter controller is configured to operate with the DC power supplied from the battery.

9. The wireless power transfer system of claim 1, wherein the receiver controller is configured to operate with power supplied from the second converter.

10. The wireless power transfer system of claim 1, wherein the plurality of electric loads includes a variable transparency layer, lighting, and display.

11. A method of varying a transparency of a variable transparency layer for a vehicle door glass in the wireless power transfer system of claim 1, the method comprising:

operating the first converter, by the transmitter controller, wherein the first converter converts the DC power supplied from the battery into the AC power;

transmitting the converted AC power to the receiving coil of the power receiver through the transmitting coil;

receiving, by the receiving coil of the power receiver, the converted AC power from the transmitting coil of the power transmitter wirelessly;

converting, by the second converter, the AC power which the receiving coil of the power receiver receives, into DC power;

supplying the converted DC power to the receiver controller the second signal transceiver;

transmitting, by the receiver controller, a feedback signal related to a current power reception state or initialization state of the power receiver to the transmitter controller of the power transmitter through the second signal transceiver and the first signal transceiver in a wireless communication method;

determining, by transmitter controller of the power transmitter when the power is successfully transferred based on the feedback signal;

when the transmitter controller verifies that the power is successfully transferred, transmitting a control signal related to a degree of manipulation of a switch to the receiver controller through a first signal transceiver of the power transmitter and a second signal transceiver of the power receiver;

receiving, by the receiver controller of the power receiver, the control signal from the transmitter controller, and adjusting, by the receiver controller, an amplitude of AC voltage output from a third converter according to the received control signal to thereby vary the transparency of the variable transparency layer.

12. The method of claim 11, further including:

determining, by the transmitter controller, when a manipulating position of the switch is changed; and

when the manipulating position of the switch is changed, transmitting, by the transmitter controller, the changed control signal to the receiver controller of the power receiver.