# US 2014/0191710 A1 · Wireless charger

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- Number: US 2014/0191710 A1
- Document ID: US20140191710A1
- Status: Published application
- Kind: A1
- Application number: 13/735,288
- Filed: 2013-01-07
- Published: 2014-07-10
- Earliest claimed: 2013-01-07
- Assignees: NXP B.V.
- Inventors: Johannes Petrus Maria van Lammeren; Klaas Brink; Aliaksei Vladimirovich Sedzin; Wihelmus H. C. Knubben
- Web page: https://patentgrep.com/patent/US20140191710A1

## CPC

- B60L 53/36: by positioning the vehicle
- H02J 50/005: {Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices}
- H02J 50/10: using inductive coupling
- H02J 50/40: using two or more transmitting or receiving devices (H02J50/50 takes precedence)
- H02J 50/90: involving detection or optimisation of position, e.g. alignment
- H04B 5/26: using coils
- H04B 5/79: for data transfer in combination with power transfer
- H02J 7/00: Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones
- H02J 50/001: {Energy harvesting or scavenging}
- H04B 5/45: Transponders
- 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
- 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
- H04B: TRANSMISSION
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A wireless charger is disclosed. The charger contains a coil with a plurality of taps, thereby facilitating charging according to different frequencies and standards. Detection of the standard appropriate to a particular receiver may be accomplished by modulation of the power carrier or via low power modalities, including NFC or Bluetooth.

## Claims

### Claim 1

An apparatus for wirelessly charging a receiver comprising: a coil having one or more taps; each of said taps being connected to a transmitter; and a controller capable of directing said transmitter to provide charging energy via that portion of said coil energized via a selected tap.

### Claim 2 (depends on 1)

The apparatus of claim 1 in which each of said taps is connected to a respective transmitter.

### Claim 3 (depends on 2)

The apparatus of claim 2 in which a switch is connected between each of said taps and its respective transmitter.

### Claim 4 (depends on 3)

The apparatus of claim 3 further comprising a controller connected to control each said transmitter and open and close said switches.

### Claim 5 (depends on 1)

The apparatus of claim 1 further including an NFC element connected to one of said taps.

### Claim 6 (depends on 5)

The apparatus of claim 5 in which said NFC element is a tag.

### Claim 7 (depends on 4)

The apparatus of claim 4 in which said controller is capable of directing at least one transmitter to transmit a modulated signal on its power carrier.

### Claim 8

An apparatus for wirelessly charging a receiver comprising: a coil with a plurality of taps, each of said taps defining a respective portion of said coil; a plurality of switches, each of said switches being connected to a respective tap; a plurality of transmitters, each of said transmitters being connectable to a respective tap by closing said respective switch; a controller adapted to: (i) close a selected switch; (ii) choose a respective transmitter and cause said transmitter to transmit charging energy through said selected switch and thereby energize said respective portion of said coil; (iii) cause said respective transmitter to transmit a modulated communication signal.

### Claim 9 (depends on 5)

The apparatus of claim 5 in which said NFC element is capable of transmitting and receiving NFC signals.