# US 10,369,894 B2 · Parking alignment sequence for wirelessly charging an electric vehicle

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- Number: US 10,369,894 B2
- Document ID: US10369894B2
- Status: Granted
- Kind: B2
- Application number: 15/331,274
- Filed: 2016-10-21
- Published: 2018-04-26
- Granted: 2019-08-06
- Earliest claimed: 2016-10-21
- Assignees: Hevo, Inc.
- Applicants: HEVO Inc.
- Inventors: Jeremy Ryan McCool; Umer Anwer; Alap Shah; Kunal Kamle
- Web page: https://patentgrep.com/patent/US10369894B2

## CPC

- B60L 53/38: specially adapted for charging by inductive energy transfer
- B60L 53/12: Inductive energy transfer
- B60L 53/66: Data transfer between charging stations and vehicles
- G01C 21/3469: {Fuel consumption; Energy use; Emission aspects}
- G01C 21/3664: {Details of the user input interface, e.g. buttons, knobs or sliders, including those provided on a touch screen; remote controllers; input using gestures}
- G01C 21/3676: {Overview of the route on the road map}
- H04W 4/023: {using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds}
- H04W 4/024: Guidance services
- H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
- B60L 2240/16: longitudinal
- B60L 2240/60: Navigation input
- B60L 2240/62: Vehicle position
- B60L 2240/622: by satellite navigation
- B60L 2240/72: Charging station selection relying on external data
- B60L 2250/16: by display
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- Y02T 10/72: Electric energy management in electromobility
- Y02T 90/12: Electric charging stations
- Y02T 90/14: Plug-in electric vehicles
- Y02T 90/16: Information or communication technologies improving the operation of electric vehicles
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A parking alignment sequence for wirelessly charging an electric vehicle can include determining a location of a charging station by a processing device of a user device based on communication over a cellular network. The charging station can have a transmitter for wirelessly transmitting power to a receiver of the electric vehicle. A first user interface having directions to the charging station from a current location of the user device can be displayed. Alignment data can be wirelessly received via a communication path that is independent of the cellular network in response to the electric vehicle being located within a predetermined distance from the charging station. A second user interface having alignment instructions can be displayed for moving the electric vehicle into alignment based on the alignment data in response to the electric vehicle being located within the predetermined distance from the charging station.

## Claims

### Claim 1

A method comprising:
determining, by a processing device of a user device, a location of a charging station based on a communication that is over a cellular network and that is between the user device and the charging station, the charging station having a transmitter for wirelessly transmitting power to a receiver of an electric vehicle for charging the electric vehicle;
generating, by the processing device, a first user interface for display to a user associated with the electric vehicle, the first user interface having directions to the charging station from a current location of the user device;
determining, by the processing device, that the electric vehicle is located within a first predetermined distance from the charging station that is physically separate from the electric vehicle;
determining, by the processing device, alignment data at least in part by measuring a strength of a surrounding electromagnetic field using one or more low frequency antennas coupled to at least one of the transmitter or the receiver;
receiving, by the processing device, the alignment data wirelessly transmitted from the charging station via a communication path that is independent of the cellular network in response to determining that the electric vehicle is located within the first predetermined distance from the charging station;
generating, by the processing device, a second user interface for display to the user, the second user interface having alignment instructions for moving the electric vehicle into alignment with the charging station based on the alignment data in response to the electric vehicle being located within the first predetermined distance from the charging station; and
activating, by the processing device, a primary coil associated with the transmitter to a lower power state in which power to the primary coil is below that of a higher power state in response to determining that the receiver is within a second predetermined distance from the transmitter.

### Claim 2 (depends on 1)

The method of claim 1, wherein the alignment data comprises first alignment data and second alignment data, the method further comprising:
determining, by the processing device, the second alignment data in response to the electric vehicle being located within the second predetermined distance from the charging station, the second predetermined distance being smaller than the first predetermined distance; and
displaying, by the processing device, a third user interface having charging information based on the second alignment data.

### Claim 3 (depends on 2)

The method of claim 2, wherein displaying the first user interface comprises receiving the current location of the electric vehicle using a global positioning system, wherein receiving the first alignment data independent of the cellular network comprises receiving the first alignment data using a short-range wireless technology, wherein determining the second alignment data comprises:
receiving electromagnetic field data from the one or more low frequency antennas; and
comparing the electromagnetic field data from the one or more low frequency antennas to determine second alignment data, the electromagnetic field data indicating a strength of an electromagnetic field emitted by the transmitter at a position of the one or more low frequency antennas.

### Claim 4 (depends on 3)

The method of claim 3, wherein receiving alignment data using the short-range wireless technology comprises using Zigbee to communicate between the receiver and the transmitter.

### Claim 5 (depends on 2)

The method of claim 2, wherein displaying the third user interface having the charging information comprises determining the receiver is within a threshold distance of a position for obtaining 95% or greater efficiency in transferring power wirelessly between the transmitter and the receiver.

### Claim 6 (depends on 2)

The method of claim 2, wherein displaying the third user interface having the charging information comprises displaying an option to begin charging the electric vehicle, the method further comprising:
receiving, by the processing device, real-time information independent of the cellular network, the real-time information including a receiver voltage, a receiver current, a number of kilowatt hours, a time spent, the location of the charging station, an amount of money charged, and a charging efficiency; and
displaying, by the processing device, the real-time information on the third user interface.

### Claim 7 (depends on 2)

The method of claim 2, wherein receiving first alignment data comprises receiving first alignment data that is based on a position of the electric vehicle relative to the charging station,
wherein determining second alignment data comprises determining second alignment data that is based on a position of the receiver relative to the transmitter.

### Claim 8

A system comprising:
a processing device of a user device; and
a memory device on which instructions are stored for causing the processing device to:
determine a location of a charging station based on a communication that is over a cellular network and that is between the user device and the charging station, the charging station having a transmitter for wirelessly transmitting power to a receiver of an electric vehicle for charging the electric vehicle;
generate a first user interface for display to a user associated with the electric vehicle, the first user interface having directions to the charging station from a current location of the user device;
determine that the electric vehicle is located within a first predetermined distance from the charging station that is physically separate from the electric vehicle;
determine alignment data at least in part by measuring a strength of a surrounding electromagnetic field using one or more low frequency antennas coupled to at least one of the transmitter or the receiver;
receive the alignment data wirelessly transmitted from the charging station via a communication path that is independent of the cellular network in response to determining that the electric vehicle is located within the first predetermined distance from the charging station;
generate a second user interface for display to a user associated with the electric vehicle, the second user interface having alignment instructions for moving the electric vehicle into alignment with the charging station based on the alignment data in response to the electric vehicle being located within the first predetermined distance from the charging station; and
activate a primary coil associated with the transmitter to a lower power state in which power to the primary coil is below that of a higher power state in response to determining that the receiver is within a second predetermined distance from the transmitter.

### Claim 9 (depends on 8)

The system of claim 8, wherein the alignment data comprises first alignment data and second alignment data, wherein the memory device further comprises additional instructions for causing the processing device to:
determine the second alignment data in response to the electric vehicle being located within the second predetermined distance from the charging station, the second predetermined distance being smaller than the first predetermined distance; and
display a third user interface having charging information based on the second alignment data.

### Claim 10 (depends on 9)

The system of claim 9, wherein the instructions for causing the processing device to display the first user interface comprises receiving the current location of the electric vehicle using a global positioning system,
wherein the instructions for causing the processing device to receive the first alignment data independent of the cellular network comprises receiving the first alignment data using a short-range wireless technology,
wherein the instructions for causing the processing device to determine the second alignment data comprises:
receiving electromagnetic field data from the one or more low frequency antennas; and
comparing the electromagnetic field data from the one or more low frequency antennas to determine the second alignment data, the electromagnetic field data indicating a strength of an electromagnetic field emitted by the transmitter at a position of the one or more low frequency antennas.

### Claim 11 (depends on 10)

The system of claim 10, wherein the instructions for causing the processing device to receive the alignment data using the short-range wireless technology comprises using Zigbee to communicate between the receiver and the transmitter.

### Claim 12 (depends on 9)

The system of claim 9, wherein the instructions for causing the processing device to display the third user interface having the charging information comprises determining the receiver is within a threshold distance of a position for obtaining 95% or greater efficiency in transferring power wirelessly between the transmitter and the receiver.

### Claim 13 (depends on 9)

The system of claim 9, wherein the instructions for causing the processing device to display the third user interface having the charging information comprises displaying an option to begin charging the electric vehicle, wherein the memory device further comprises additional instructions for causing the processing device to:
receive real-time information independent of the cellular network, the real-time information including a receiver voltage, a receiver current, a number of kilowatt hours, a time spent, the location of the charging station, an amount of money charged, and a charging efficiency; and
display the real-time information on the third user interface.

### Claim 14 (depends on 9)

The system of claim 9, wherein the instructions for causing the processing device to receive first alignment data comprises receiving first alignment data that is based on a position of the electric vehicle relative to the charging station,
wherein the instructions for causing the processing device to determine second alignment data comprises determining second alignment data that is based on a position of the receiver relative to the transmitter.

### Claim 15

A non-transitory computer-readable medium in which instructions executable by a processing device of a user device are stored for causing the processing device to:
determine a location of a charging station based on a communication that is over a cellular network and that is between the user device and the charging station, the charging station having a transmitter for wirelessly transmitting power to a receiver of an electric vehicle for charging the electric vehicle;
generate a first user interface for display to a user associated with the electric vehicle, the first user interface having directions to the charging station from a current location of the user device;
determine that the electric vehicle is located within a first predetermined distance from the charging station that is physically separate from the electric vehicle;
determine alignment data at least in part by measuring a strength of a surrounding electromagnetic field using one or more low frequency antennas coupled to at least one of the transmitter or the receiver;
receive the alignment data wirelessly transmitted from the charging station via a communication path that is independent of the cellular network in response to determining that the electric vehicle being located within the first predetermined distance from the charging station;
generate a second user interface for display to a user associated with the electric vehicle, the second user interface having alignment instructions for moving the electric vehicle into alignment with the charging station based on the alignment data in response to the electric vehicle being located within the first predetermined distance from the charging station; and
activate a primary coil associated with the transmitter to a lower power state in which power to the primary coil is below that of a higher power state in response to determining that the receiver is within a second predetermined distance from the transmitter.

### Claim 16 (depends on 15)

The non-transitory computer-readable medium of claim 15, wherein the alignment data comprises first alignment data and second alignment data, the non-transitory computer-readable medium further comprising additional instructions executable by the processing device for causing the processing device to:
determine the second alignment data in response to the electric vehicle being located within the second predetermined distance from the charging station, the second predetermined distance being smaller than the first predetermined distance; and
display a third user interface having charging information based on the second alignment data.

### Claim 17 (depends on 16)

The non-transitory computer-readable medium of claim 16, wherein the instructions executable by the processing device for causing the processing device to display the first user interface comprises receiving the current location of the electric vehicle using a global positioning system,
wherein the instructions executable by the processing device for causing the processing device to receive the first alignment data independent of the cellular network comprises receiving the first alignment data using a short-range wireless technology,
wherein the instructions executable by the processing device for causing the processing device to determine the second alignment data comprises:
receiving electromagnetic field data from the one or more low frequency antennas; and
comparing the electromagnetic field data from the one or more low frequency antennas to determine the second alignment data, the electromagnetic field data indicating a strength of an electromagnetic field emitted by the transmitter at a position of the one or more low frequency antenna.

### Claim 18 (depends on 17)

The non-transitory computer-readable medium of claim 17, wherein the instructions executable by the processing device for causing the processing device to receive the alignment data using the short-range wireless technology comprises using Zigbee to communicate between the receiver and the transmitter.

### Claim 19 (depends on 16)

The non-transitory computer-readable medium of claim 16, wherein the instructions executable by the processing device for causing the processing device to display the third user interface having the charging information comprises determining the receiver is within a threshold distance of a position for obtaining 95% or greater efficiency in transferring power wirelessly between the transmitter and the receiver.

### Claim 20 (depends on 16)

The non-transitory computer-readable medium of claim 16, wherein the instructions executable by the processing device for causing the processing device to receive first alignment data comprises receiving first alignment data that is based on a position of the electric vehicle relative to the charging station,
wherein the instructions executable by the processing device for causing the processing device to determine second alignment data comprises determining second alignment data that is based on a position of the receiver relative to the transmitter.