System for multi-band power transmission with multiple protocols

• US 10,284,016 B2
• Filed: 05/23/2016
• Issued: 05/07/2019
• Est. Priority Date: 06/05/2015
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Park, Soo Young, Park, Su Bin, Lee, Jong Heon
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Barnett, Joel
• Application Number:
  US15/162,179
• Publication Number:
  US 20160359370A1
• Time in Patent Office: 1,079 Days
• Field of Search: None
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 7/00302 Overcharge protection
• CPC Class Codes: H02J 7/00304 Overcurrent protection
• CPC Class Codes: H02J 7/00308 Overvoltage protection
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

An apparatus for receiving a wireless power signal includes a detection unit configured to discover a power signal having plural components, each generated by plural wireless charging techniques, a recognition unit configured to analyze the power signal to recognize which component of the power signal can be corresponding to each of the plural wireless charging techniques, a combination unit configured to combine outputs of the recognition unit into a single energy signal, and a charging unit configured to use the energy signal for charging a battery.

Claims

1. An apparatus for receiving a wireless power signal, comprising:

a detection unit detecting an AC power signal having a plurality of components generated by a plurality of wireless charging techniques;

a reference signal generator generating a reference signal used for detecting and filtering the plurality of components of the AC power signal when the AC power signal includes the plurality of components generated based on the plurality of wireless charging techniques, and supplying the reference signal to the detection unit;

a recognition unit analyzing the AC power signal to recognize a wireless charging technique corresponding to each of the plurality of components of the AC power signal using a plurality of filters to generate filtered signals, and rectifying the filtered signals to generate rectified signals;

a combination unit combining the rectified signals into a single DC signal; and

a charging unit controlling the single DC signal for charging a battery,

wherein the plurality of wireless charging techniques comprise a first electromagnetic induction method and a second electromagnetic induction method, and the first electromagnetic induction method has a power signal and a feedback signal of different structure and/or different information than a power signal and a feedback signal of the second electromagnetic induction method.

2. The apparatus according to claim 1, wherein the plurality of wireless charging techniques further comprise a charging method using at least one of magnetic resonance and a radio frequency signal.

3. The apparatus according to claim 2, wherein the electromagnetic induction method comprises a way which is standardized by the Wireless Power Consortium (WPC), the second electromagnetic induction method comprises a way which is standardized by the Power Matters Alliance (PMA), the charging method using the magnetic resonance comprises a way which is standardized by the Alliance for Wireless Power (A4WP), and the charging method using the radio frequency signal comprises a way using a radio-wave or a microwave.

4. The apparatus according to claim 1, wherein the detection unit comprises at least one of a coil and an antenna which is operable according to the plurality of wireless charging techniques.

5. The apparatus according to claim 1, wherein the recognition unit comprises at least one frequency filter for passing the AC power signal with a particular frequency band.

6. The apparatus according to claim 1, further comprising a control unit configured to control that the AC power signal is dynamically analyzed and/or combined by the recognition unit and/or the combination unit according to a power receiving efficiency, a level of voltage or current, or a requirement for a subject charging device, or to engage with a processing system equipped in the apparatus or an external device so as to control the recognition unit and/or the combination unit.

7. The apparatus according to claim 6, wherein the control unit comprises a feedback unit configured to feedback operational results of the recognition unit and/or the combination unit.

8. The apparatus according to claim 1, wherein the combination unit comprises a power combiner.

9. A method for receiving a wireless power signal, comprising:

detecting an AC power signal having a plurality of components generated by a plurality of wireless charging techniques;

analyzing the AC power signal to recognize a wireless charging technique corresponding to each of the plurality of components;

generating a reference signal used for detecting and filtering the plurality of components of the AC power signal to generate a plurality of filtered components when the AC power signal includes the plurality of components generated based on the plurality of wireless charging techniques;

rectifying the plurality of filtered components to generate a plurality of rectified components;

combining the plurality of rectified components into a single DC signal; and

charging a battery by using the DC signal,

wherein the plurality of wireless charging techniques comprise a first electromagnetic induction method and a second electromagnetic induction method, and the first electromagnetic induction method has a power signal and a feedback signal of different structure and/or different information than a power signal and a feedback signal of the second electromagnetic induction method.

10. The method according to claim 9, wherein the plurality of wireless charging techniques further comprise a charging method using at least one of magnetic resonance and a radio frequency signal.

11. The method according to claim 10, wherein the first electromagnetic induction method comprises a way which is standardized by the Wireless Power Consortium (WPC), the second electromagnetic induction method comprises a way which is standardized by the Power Matters Alliance (PMA), the charging method using the magnetic resonance comprises a way which is standardized by the Alliance for Wireless Power (A4WP), and the charging method using the radio frequency signal comprises a way using a radio-wave or a microwave.

12. The method according to claim 9, wherein the detecting the AC power signal comprises controlling at least one of a coil and an antenna according to the plurality of wireless charging techniques.

13. The method according to claim 9, wherein the analyzing the AC power signal and the combining the plurality of filtered components are controlled according to a power receiving efficiency, a level of voltage or current, or a requirement for a subject charging device.

14. The method according to claim 13, further comprising feeding back results of the analyzing the AC power signal and the combining the plurality of filtered components.

15. An apparatus for transmitting a wireless power signal, comprising:

a signal generator configured to generate a plurality of power signals which are transferred according to a plurality of wireless charging techniques;

a mixer configured to mix at least two of the plurality of power signals into an AC power signal having at least two components according to a combination possibility of the plurality of power signals; and

wherein the plurality of wireless charging techniques comprise a first electromagnetic induction method and a second electromagnetic induction method, and the first electromagnetic induction method has a power signal and a feedback signal of different structure and/or different information than a power signal and a feedback signal of the second electromagnetic induction method, and

wherein the plurality of power signals generated according to the first electromagnetic induction method and the second electromagnetic induction method are mixed into the AC power signal.

16. The apparatus according to claim 15, wherein if the plurality of power signals have no combination possibility, the mixer delivers the plurality of power signals into the transmitter respectively without mixing.