Apparatus and method for performing communication in wireless power transmission system

Patent metadata

Field	Value
Publication number	US-12573880-B2
Application number	US-202418775419-A
Country	US
Kind code	B2
Filing date	Jul 17, 2024
Priority date	Aug 24, 2017
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

A wireless power transmission apparatus including a controller configured to initiate a digital ping to solicit a response from a wireless power reception apparatus, receive the response from the wireless power reception apparatus, and perform a negotiation for a first power level with the wireless power reception apparatus, and a power converter configured to transmit a wireless power to the wireless power reception apparatus based on the first power level, wherein the controller is configured to transmit, to the wireless power reception apparatus in response to a received power packet, a bit pattern response requesting a communication by the wireless power transmission apparatus to change the first power level, and transmit a packet related to a second power level to the wireless power reception apparatus, and wherein the bit pattern response is defined as a pattern different from a bit pattern for an 8-bit ACK response, a bit pattern for an 8-bit NAK response and a bit pattern for an 8-bit ND response.

First claim

What is claimed is:

1 . A wireless power transmission apparatus, comprising:
a controller configured to: initiate a digital ping to solicit a response from a wireless power reception apparatus, receive the response from the wireless power reception apparatus, and perform a negotiation for a first power level with the wireless power reception apparatus; and a power converter configured to transmit a wireless power to the wireless power reception apparatus based on the first power level, wherein the controller is configured to: transmit, to the wireless power reception apparatus in response to a received power packet, a bit pattern response requesting a communication by the wireless power transmission apparatus to change the first power level, and transmit a packet related to a second power level to the wireless power reception apparatus, and wherein the bit pattern response is defined as a pattern different from a bit pattern for an 8-bit ACK response, a bit pattern for an 8-bit NAK response and a bit pattern for an 8-bit ND response.

2 . The apparatus of claim 1 , wherein the first power level and the second power level are guaranteed power.

3 . The apparatus of claim 1 , wherein the first power level and the second power level are target power.

4 . The apparatus of claim 1 , wherein the packet related to the second power level includes a capability packet of the wireless power transmission apparatus.

5 . The apparatus of claim 1 , wherein the bit pattern response indicates a request to the wireless power reception apparatus for acquiring an authority that the wireless power transmission apparatus is able to transmit a predetermined packet.

6 . A wireless power transmission method, comprising:
initiating a digital ping to solicit a response from a wireless power reception apparatus; receiving the response from the wireless power reception apparatus; performing a negotiation for a first power level with the wireless power reception apparatus; transmitting a wireless power to the wireless power reception apparatus based on the first power level; transmitting, to the wireless power reception apparatus in response to a received power packet, a bit pattern response requesting a communication by a wireless power transmission apparatus to change the first power level; and transmitting a packet related to a second power level to the wireless power reception apparatus, wherein the bit pattern response is defined as a pattern different from a bit pattern for an 8-bit ACK response, a bit pattern for an 8-bit NAK response and a bit pattern for an 8-bit ND response.

7 . The method of claim 6 , wherein the first power level and the second power level are guaranteed power.

8 . The method of claim 6 , wherein the first power level and the second power level are target power.

9 . The method of claim 6 , wherein the packet related to the second power level includes a capability packet of the wireless power transmission apparatus.

10 . The method of claim 6 , wherein the bit pattern response indicates a request to the wireless power reception apparatus for acquiring an authority that the wireless power transmission apparatus is able to transmit a predetermined packet.

11 . A wireless power reception apparatus, comprising:
a controller configured to: receive, from a wireless power transmission apparatus, a digital ping, transmit a response related to the digital ping to the wireless power transmission apparatus, perform a negotiation for a first power level with the wireless power transmission apparatus; and a power pickup configured to receive a wireless power from the wireless power transmission apparatus based on the first power level, wherein the controller is configured to: receive, from the wireless power transmission apparatus in response to a received power packet, a bit pattern response requesting a communication by the wireless power transmission apparatus to change the first power level, and receive a packet related to a second power level from the wireless power transmission apparatus, and wherein the bit pattern response is defined as a pattern different from a bit pattern for an 8-bit ACK response, a bit pattern for an 8-bit NAK response and a bit pattern for an 8-bit ND response.

12 . The apparatus of claim 11 , wherein the first power level and the second power level are guaranteed power.

13 . The apparatus of claim 11 , wherein the first power level and the second power level are target power.

14 . The apparatus of claim 11 , wherein the packet related to the second power level includes a capability packet of the wireless power transmission apparatus.

15 . The apparatus of claim 1 , wherein bits in the bit pattern response are toggled in units of 2 bits.

16 . The method of claim 6 , wherein bits in the bit pattern response are toggled in units of 2 bits.

Assignees

• Lg Electronics Inc

Inventors

• Park Yongcheol
• Yook Gyunghwan

Classifications

• H02J7/40

  characterised by the exchange of charge or discharge related data · CPC title

• H04B5/266

  One coil at each side, e.g. with primary and secondary coils · CPC title

• H04B5/45

  Transponders · CPC title

• H02J50/40

  using two or more transmitting or receiving devices (H02J50/50 takes precedence) · CPC title

• H02J50/005

  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 title