Wireless power transmitter and receiver

• US 10,459,114 B2
• Filed: 05/18/2016
• Issued: 10/29/2019
• Est. Priority Date: 05/18/2015
• Status: Active Grant

• Current Assignee: LaserMotive Inc.
• Original Assignee: LaserMotive Inc.
• Inventors: Nugent, Jr., Thomas J., Kagle, Jonathan Charles
• Primary Examiner(s): Tso, Edward
• Application Number:
  US15/574,668
• Publication Number:
  US 20180138755A1
• Time in Patent Office: 1,259 Days
• Field of Search: 320101, 320107, 320108, 320114, 320115
• CPC Class Codes: G01S 17/04 Systems determining the presence of a target
• CPC Class Codes: G01S 17/06 Systems determining position data of a target
• CPC Class Codes: G01S 17/87 Combinations of systems using electromagnetic waves other than radio waves
• CPC Class Codes: G01S 17/88 Lidar systems specially adapted for specific applications
• CPC Class Codes: G01S 17/89 for mapping or imaging
• CPC Class Codes: G01S 7/003 Transmission of data between radar, sonar or lidar systems and remote stations
• CPC Class Codes: G01S 7/006 using shared front-end circuitry, e.g. antennas G01S13/765, G01S13/825 take precedence
• CPC Class Codes: G01S 7/484 Transmitters
• CPC Class Codes: G01V 8/22 using reflectors
• CPC Class Codes: H01S 5/005 Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping H01S5/026, H01S5/18388 take precedence
• CPC Class Codes: H01S 5/0085 for modulating the output, i.e. the laser beam is modulated outside the laser cavity
• CPC Class Codes: H01S 5/06216 Pulse modulation or generation
• CPC Class Codes: H01S 5/423 having a vertical cavity
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/30 using light, e.g. lasers
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 10/1141 One-way transmission
• CPC Class Codes: H04B 10/807 Optical power feeding, i.e. transmitting power using an optical signal
• CPC Class Codes: Y02E 10/52 PV systems with concentrators

Abstract

Embodiments are directed towards a multi-stage wireless power transmission system that includes a transmitting unit and a receiving unit. The transmitting unit transmits a power beam to the receiving unit, which converts the power beam into local electrical power and provides it to a personal electronic device without a corded connection between the receiving unit and a mains power supply. The transmitting unit includes a light-based transmitter to generate and transmit a power beam towards the receiving unit. The receiving unit includes a receiver to receive at least a portion of the power beam and to convert the received power beam into local electrical power. The receiving unit also includes a power output unit to provide the received local power to a personal electronic device when the personal electronic device, which is separable from the receiving unit, is electrically coupled to the power output unit.

Claims

1. A system, comprising:

a transmitting unit and a non-stationary receiving unit, wherein the transmitting unit includes;

a light-based transmitter to generate and transmit a power beam; and

a controller to manage transmission of the power beam by the light-based transmitter, wherein managing said transmission includes;

detecting one or more objects in a vicinity of the power beam;

determining that the one or more objects pose a risk of impeding the transmission of the power beam from the light-based transmitter to the non-stationary receiving unit; and

in response to the determination of risk, decreasing an intensity of the power beam; and

wherein the non-stationary receiving unit is remote from the light-based transmitter, and wherein the non-stationary receiving unit includes;

a light-based receiver to receive at least a portion of the power beam and to convert the received portion of the power beam into local electrical power, wherein the local electrical power is local to the non-stationary receiving unit;

a power storage system to store the local electrical power; and

a power output unit to provide the local electrical power from the power storage system to a personal electronic device when the personal electronic device is electrically coupled to the power output unit, wherein the personal electronic device is separable from the non-stationary receiving unit.

2. A system according to claim 1, wherein the power output unit of the non-stationary receiving unit includes a short-range-wireless-power-transfer device to wirelessly provide the local electrical power to the personal electronic device.

3. A system according to claim 2, wherein the short-range-wireless-power-transfer device is arranged to transfer the local electrical power via an inductive coupling to the personal electronic device.

4. A system according to claim 1, wherein the power output unit includes at least one connector arranged to receive a power cord, the power cord electrically coupled to the personal electronic device and arranged to provide the local electrical power to the personal electronic device.

5. A system according to claim 1, wherein the non-stationary receiving unit is arranged to receive at least the portion of the power beam from the light-based transmitter in an absence of a corded electrical connection between the receiving unit and a mains power supply, and wherein the non-stationary receiving unit is further arranged to provide the local electrical power to the personal electronic device in the absence of the corded electrical connection between the receiving unit and the mains power supply.

6. A system according to claim 1, wherein the controller is arranged to direct the light-based transmitter to transmit the power beam toward a second non-stationary receiving unit.

7. A system according to claim 1, wherein the transmitting unit includes a locator device to determine a location of the light-based receiver relative to the light-based transmitter, and wherein the controller is arranged to aim the light-based transmitter at the light-based receiver based on the determined location of the receiver.

8. A system according to claim 1, wherein the controller is arranged to adjust a timing parameter associated with a transmission of the power beam by the light-based transmitter based on a number of interruptions of the power beam over a given time period.

9. A system, comprising:

a light-based transmitter arranged to transmit a power beam, wherein the light-based transmitter is arranged to;

detect one or more objects in a vicinity of the power beam;

determine that the one or more objects pose a risk of impeding the transmission of the power beam from the light-based transmitter to at least one device arranged to receive a portion of the power beam; and

in response to a determination that the one or more objects pose the risk of impeding the transmission of the power beam, decreasing an intensity of the power beam; and

a non-stationary receiving unit that is independent from a connection to a mains power supply and is arranged to receive the portion of the power beam from the light-based transmitter, the non-stationary receiving unit including;

a substantially planar table surface;

a base to support the substantially planar table surface;

a light-based receiver integrated with at least one of the substantially planar table surface and the base, the light-based receiver arranged to receive at least a portion of the power beam and to convert the received portion of the power beam into local electrical power that is local to the receiving unit; and

a power output unit integrated with the substantially planar table surface to provide the local electrical power to an electronic device when the electronic device is electrically coupled to the power output unit.

10. A system according to claim 9, wherein the power output unit of the non-stationary receiving unit includes a short-range-wireless-power-transfer device to wirelessly provide the local electrical power to the electronic device.

11. A system according to claim 9, wherein the power output unit includes an electrical outlet to provide the local electrical power to the electronic device via a power cord.

12. A system according to claim 9, wherein the non-stationary receiving unit is arranged to receive at least a portion of the power beam from the light-based transmitter in an absence of a corded electrical connection between the receiving unit and the mains power supply, and wherein the non-stationary receiving unit is further arranged to provide the local electrical power to the electronic device in the absence of the corded electrical connection between the receiving unit and the mains power supply.

13. A system according to claim 9, wherein the receiving unit includes a power storage system to store the local electrical power received by the light-based receiver, the power storage system arranged to provide the local electrical power to the power output unit, and the power storage system integrated with at least one of the substantially planar table surface and the base.

14. A method, comprising:

transmitting a power beam from a light-based transmitter toward a receiving unit;

receiving at least a portion of the power beam at the receiving unit;

converting the received portion of the power beam into local electrical power;

providing the local electrical power to a personal electronic device in an absence of a corded connection between the receiving unit and a mains power supply;

detecting one or more objects in a vicinity of the power beam;

determining that the one or more objects pose a risk of impeding the transmission of the power beam from the light-based transmitter to the receiver and

in response to the determination of risk, decreasing an intensity of the power beam at least until the one or more objects exit the vicinity of the power beam.

15. A method according to claim 14, wherein providing the local electrical power to the personal electronic device includes providing the local electrical power through a short-range-wireless-power-transfer device that transfers the electrical power to the personal electronic device without a power cord.

16. A method according to claim 14, wherein providing the local electrical power to the personal electronic device includes providing the local electrical power through an electrical outlet to the personal electronic device via a power cord.

17. A method according to claim 14, further comprising:

scanning an area surrounding the light-based transmitter to identify the receiving unit;

in response to identifying the receiving unit, determining a location of the receiving unit relative to the light-based transmitter; and

aiming the light-based transmitter at the receiving unit based on the determined location of the receiving unit.

18. A method according to claim 14, further comprising:

storing the local electrical power in a power supply that is local to the receiving unit prior to providing the local electrical power to the personal electronic device via the power output unit.

19. A method according to claim 14, further comprising:

detecting one or more objects in a vicinity of the power beam;

determining that the one or more objects pose a risk of impeding the transmission of the power beam from the light-based transmitter to the receiving unit; and

in response to the determination of risk, interrupting the transmission of the power beam at least until the one or more objects exit the vicinity of the power beam.