# US 8,541,976 B2 · Vehicle mounted personal device battery charging station and operating methods to avoid interference

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- Number: US 8,541,976 B2
- Document ID: US8541976B2
- Status: Granted
- Kind: B2
- Application number: 13/113,285
- Filed: 2011-05-23
- Published: 2012-11-29
- Granted: 2013-09-24
- Earliest claimed: 2011-05-23
- Assignees: Honda Motor Co., Ltd.
- Applicants: Hideaki Arai; Jason David DiSalvo
- Inventors: Hideaki Arai; Jason David DiSalvo
- Web page: https://patentgrep.com/patent/US8541976B2

## CPC

- B60L 53/65: involving identification of vehicles or their battery types
- B60L 53/126: Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
- H02J 7/50: acting upon multiple batteries simultaneously or sequentially
- H02J 7/731: {specially adapted for holding portable devices containing batteries (H02J7/751 takes precedence)}
- H02J 50/10: using inductive coupling
- H02J 50/90: involving detection or optimisation of position, e.g. alignment
- H02J 2105/44: Portable electronic devices
- 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 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
- Y02T 90/167: Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
- Y04S 30/14: Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
- 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
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## Abstract

A method and apparatus are presented for inductive charging of battery operated devices in a motor vehicle, in which a passive vehicle entry and/or starting system selectively disables or reduces provision of power to a primary coil of an inductive charging station while the passive system communicates with an external user device such as a key fob controller to avoid or mitigate electromagnetic interference.

## Claims

### Claim 1

A motor vehicle, comprising:
a passive vehicle system operative to communicate wirelessly with at least one external user device and to selectively actuate or control at least one of a vehicle entry locking system and an engine starter of the vehicle according to communications received from the at least one external user device; and
an inductive charging station comprising:
at least one primary coil operative when energized to form a transformer with a secondary coil of at least one battery powered device proximate the at least one primary coil,
a power supply with an output coupled to the at least one primary coil, the power supply operative to selectively provide AC electrical output power to the at least one primary coil to inductively charge the at least one battery powered device proximate the at least one primary coil, and to selectively discontinue or reduce provision of the AC electrical output power to the at least one primary coil based on an enable/disable signal or command, and
an input for receiving the enable/disable signal or command from the passive vehicle system;
the passive vehicle system being operative to selectively provide the enable/disable signal or command to the inductive charging station to cause the power supply to discontinue or reduce provision of the AC electrical output power to the at least one primary coil during at least a portion of a time period when the passive vehicle system communicates wirelessly with the at least one external user device.

### Claim 2 (depends on 1)

The motor vehicle of claim 1, wherein the passive vehicle system and the inductive charging station are operatively coupled with a communications network, and wherein the passive vehicle system is operative to selectively provide the enable/disable command to the inductive charging station through the communications network via at least one message.

### Claim 3 (depends on 2)

The motor vehicle of claim 2, wherein the passive vehicle system and the inductive charging station are operatively coupled with a Controller Area Network (CAN) bus, and wherein the passive vehicle system is operative to selectively provide the enable/disable command to the inductive charging station through the CAN bus via at least one message.

### Claim 4 (depends on 2)

The motor vehicle of claim 2, wherein the passive vehicle system and the inductive charging station are operatively coupled with a Local Interconnect Network (LIN) bus, and wherein the passive vehicle system is operative to selectively provide the enable/disable command to the inductive charging station through the LIN bus via at least one message.

### Claim 5 (depends on 2)

The motor vehicle of claim 2, wherein the passive vehicle system and the inductive charging station each comprise a Universal Asynchronous Receiver/Transmitter (UART), wherein the UARTs of the passive vehicle system and the inductive charging station are operatively coupled to one another, and wherein the passive vehicle system is operative to selectively provide the enable/disable command to the inductive charging station through the UARTs via at least one message.

### Claim 6 (depends on 2)

The motor vehicle of claim 2, wherein the vehicle entry locking system is operatively coupled with the communications network, and wherein the passive vehicle system is operative to selectively actuate or control the vehicle entry locking system by messaging through the communications network.

### Claim 7 (depends on 2)

The motor vehicle of claim 2, wherein the engine starter is operatively coupled with the communications network, and wherein the passive vehicle system is operative to selectively actuate or control the engine starter by messaging through the communications network.

### Claim 8 (depends on 2)

The motor vehicle of claim 2, wherein the inductive charging station comprises:
a processor operatively coupled with the power supply to selectively control provision of the AC electrical output power to the at least one primary coil; and
wherein the input comprises a communications interface operative to receive at least one message including the enable/disable command from the passive vehicle system via the communications network and to provide the enable/disable command to the processor.

### Claim 9 (depends on 1)

The motor vehicle of claim 1, wherein the passive vehicle system and the inductive charging station each comprise a Universal Asynchronous Receiver/Transmitter (UART), wherein the UARTs of the passive vehicle system and the inductive charging station are operatively coupled to one another, and wherein the passive vehicle system is operative to selectively provide the enable/disable command to the inductive charging station through the UARTs via at least one message.

### Claim 10 (depends on 1)

The motor vehicle of claim 1, wherein the inductive charging station comprises a switching device coupled between a power input of the power supply and a vehicle battery, the switching device operative to selectively provide the AC electrical output power to the at least one primary coil and to discontinue provision of the AC electrical output power to the at least one primary coil based on the enable/disable signal or command.

### Claim 11 (depends on 10)

The motor vehicle of claim 10, wherein the inductive charging station comprises a processor operatively coupled with the input to receive the enable/disable signal or command, the processor operative to provide a control signal to the switching device to selectively control provision of the AC electrical output power to the at least one primary coil according to the enable/disable signal or command.

### Claim 12 (depends on 1)

The motor vehicle of claim 1, wherein the passive vehicle system is operative to detect wireless communications from the at least one external user device and to selectively provide the enable/disable signal or command to the inductive charging station to cause the power supply to discontinue or reduce provision of the AC electrical output power to the at least one primary coil in response to detection of wireless communications from the at least one external user device.

### Claim 13 (depends on 1)

The motor vehicle of claim 1, wherein the passive vehicle system is operative to selectively provide the enable/disable signal or command to the inductive charging station to cause the power supply to discontinue or reduce provision of the AC electrical output power to the at least one primary coil prior to attempting communications with the at least one external user device.

### Claim 14

A method for operating an inductive charging station in a motor vehicle, the method comprising:
selectively providing AC electrical output power to at least one primary coil of an inductive charging station located in or proximate an interior of a motor vehicle for inductive charging of at least one battery-powered device positioned near the at least one primary coil;
determining that a passive vehicle system is or will be wirelessly communicating with at least one external user device; and
automatically discontinuing or reducing provision of the AC electrical output power to the at least one primary coil during at least a portion of a time period when the passive vehicle system is or will be wirelessly communicating with the at least one external user device.

### Claim 15 (depends on 14)

The method of claim 14, further comprising:
determining that the passive vehicle system has completed wirelessly communicating with the at least one external user device; and
automatically resuming provision of the AC electrical output power to the at least one primary coil.

### Claim 16 (depends on 15)

The method of claim 15, comprising:
detecting wireless communications from the at least one external user device; and
automatically discontinuing or reducing provision of the AC electrical output power to the at least one primary coil in response to detection of the wireless communications from the at least one external user device.

### Claim 17 (depends on 15)

The method of claim 15, comprising automatically discontinuing or reducing provision of the AC electrical output power to the at least one primary coil prior to attempting communications with the at least one external user device.

### Claim 18 (depends on 14)

The method of claim 14, comprising:
detecting wireless communications from the at least one external user device; and
automatically discontinuing or reducing provision of the AC electrical output power to the at least one primary coil in response to detection of the wireless communications from the at least one external user device.

### Claim 19 (depends on 14)

The method of claim 14, comprising automatically discontinuing or reducing provision of the AC electrical output power to the at least one primary coil prior to attempting communications with the at least one external user device.

### Claim 20 (depends on 14)

The method of claim 14, wherein automatically discontinuing or reducing provision of the AC electrical output power to the at least one primary coil comprises selectively providing an enable/disable signal or command from the passive vehicle system to the inductive charging station.