Receiver for wireless charging system

• US 10,491,049 B2
• Filed: 03/26/2019
• Issued: 11/26/2019
• Est. Priority Date: 01/09/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: KthePower, Inc.
• Inventors: Kim, Si-Han, Na, Gi-Yong
• Primary Examiner(s): Tso, Edward
• Application Number:
  US16/364,371
• Publication Number:
  US 20190222072A1
• Time in Patent Office: 245 Days
• Field of Search: 320107, 320108, 320112, 307104
• CPC Class Codes: H01F 27/02 Casings
• CPC Class Codes: H01F 27/245 made from sheets, e.g. grain-oriented H01F27/26 takes precedence
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 27/2828 Construction of conductive connections, of leads
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 7/06 with core of ferromagnetic material H01Q7/02 takes precedence
• CPC Class Codes: 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
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H04B 1/3833 Hand-held transceivers
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04M 1/026 Details of the structure or mounting of specific components
• CPC Class Codes: H04M 1/0277 for a printed circuit board assembly
• CPC Class Codes: H04M 1/03 : Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Abstract

A receiver for a wireless charging system, capable of receiving power energy using non-contact type magnetic induction, includes a coil capable of receiving the power energy and a part for generating a predetermined output power from the power energy received by the coil, a portable terminal, an NFC coil further provided outside of the coil, and a ferrite sheet further provided at the coil and the NFC coil.

Claims

1. A wireless charging receiver having a wireless charging coil capable of receiving a wireless charging energy using non-contact type magnetic induction and a part for generating a predetermined output power from the wireless charging energy received by the wireless charging coil, the wireless charging receiver comprising:

a magnetic field insulating sheet;

a NFC coil coupled with the magnetic field insulating sheet;

the wireless charging coil being provided in an inside space surrounded by the NFC coil and spaced apart from the NFC coil in a mutually insulated state;

wherein a first circuit path for receiving a data through the NFC coil and a second circuit path for receiving the wireless charging energy through the wireless charging coil are mutually insulated,

wherein the magnetic field insulating sheet, the NFC coil and the wireless charging coil are combined into a set and the set is provided in a portable device, and

wherein the NFC coil is inactive while the wireless charging coil is active.

2. The wireless charging receiver according to claim 1, wherein the magnetic field insulating sheet comprises a silicon steel.

3. The wireless charging receiver according to claim 2, wherein the wireless charging coil and the NFC coil are directly formed on a surface of the magnetic field insulating sheet without making a groove on the magnetic field insulating sheet.

4. The wireless charging receiver according to claim 2, wherein a distance between the wireless charging coil and the NFC coil is 1 millimeter to 10 millimeters.

5. The wireless charging receiver according to claim 2, wherein the wireless charging coil and the NFC coil are partially overlapped.