Wireless communication device and control method thereof

Patent metadata

Field	Value
Publication number	US-12418326-B2
Application number	US-202318173109-A
Country	US
Kind code	B2
Filing date	Feb 23, 2023
Priority date	Mar 24, 2022
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

The present disclosure provides a wireless communication device and a control method thereof. The wireless communication device includes a first communication control module and a second communication control module. The method includes: making the first communication control module start to work in a first mode and the second communication control module start to work in a second mode; providing, by the second communication control module, identification information; reading, by the first communication control module, the identification information, and determining whether the identification information is the same as first preset information; if so, switching both the first communication control module and the second communication control module to a third mode, and performing, by the first communication control module and the second communication control module, wireless communication to transmit data; and controlling the wireless power transmission device to perform wireless power transmission with a first preset power.

First claim

What is claimed is:

1. A method for controlling a wireless communication device, wherein the wireless communication device is used for a wireless power transmission device, and comprises a first communication control module, a first antenna coil, a second antenna coil and a second communication control module, the first communication control module is coupled with the first antenna coil, and the second antenna coil is coupled with the second communication control module; and the method comprises:
making the first communication control module start to work in a first mode and the second communication control module start to work in a second mode;
providing, by the second communication control module, identification information;
reading, by the first communication control module, the identification information, and determining whether the identification information is the same as first preset information;
if so, switching both a working mode of the first communication control module and a working mode of the second communication control module to a third mode, and performing by the first communication control module and the second communication control module, wireless communication to transmit data; and
controlling the wireless power transmission device to perform wireless power transmission with a first preset power.

2. The method according to claim 1 , wherein the switching both the working mode of the first communication control module and the working mode of the second communication control module to the third mode comprises:
providing auxiliary electric energy to the second communication control module;
making the second communication control module start to work in the third mode; and
making the first communication control module start to work in the third mode after a first preset duration delayed relative to the second communication control module.

3. The method according to claim 2 , wherein after the providing the auxiliary electric energy to the second communication control module, the method comprises:
outputting, by the first communication control module, second preset information to the second communication control module; and
switching, by the second communication control module, the working mode from the second mode to the third mode when receiving the second preset information.

4. The method according to claim 1 , wherein the switching both the working mode of the first communication control module and the working mode of the second communication control module to the third mode comprises:
providing auxiliary electric energy to the second communication control module;
updating, by the second communication control module, the identification information to third preset information;
switching, by the first communication control module, the working mode from the first mode to the third mode when reading the third preset information; and
making the second communication control module start to work in the third mode after a second preset duration delayed relative to the first communication control module.

5. The method according to claim 2 , wherein energy is transferred to a battery pack by the wireless power transmission device, and the wireless power transmission device comprises a power transmission control and drive module, a transmitting coil, a receiving coil and a rectification and control module;
the power transmission control and drive module is coupled with the transmitting coil, the receiving coil is coupled with the rectification and control module, the transmitting coil and the receiving coil are loosely coupled, the second communication control module is coupled with the rectification and control module, and the battery pack is coupled with the rectification and control module and the second communication control module, respectively; and
the providing the auxiliary electric energy to the second communication control module comprises:
when a voltage of the battery pack is higher than or equal to a first preset voltage, providing the auxiliary electric energy to the second communication control module through the battery pack; and
when the voltage of the battery pack is lower than the first preset voltage, performing, by the power transmission control and drive module and the rectification and control module, the wireless power transmission with a second preset power through the transmitting coil and the receiving coil, and providing the auxiliary electric energy to the second communication control module through the rectification and control module;
wherein the second preset power is lower than the first preset power.

6. The method according to claim 2 , wherein the wireless power transmission device comprises a power transmission control and drive module, a transmitting coil, a receiving coil and a rectification and control module;
the power transmission control and drive module is coupled with the transmitting coil, the receiving coil is coupled with the rectification and control module, the transmitting coil and the receiving coil are loosely coupled, and the second communication control module is coupled with the rectification and control module; and
the providing the auxiliary electric energy to the second communication control module comprises:
performing, by the power transmission control and drive module and the rectification and control module, the wireless power transmission with a second preset power through the transmitting coil and the receiving coil, and providing the auxiliary electric energy to the second communication control module through the rectification and control module; and
wherein the second preset power is lower than the first preset power.

7. The method according to claim 1 , wherein the wireless power transmission device comprises a power transmission control and drive module, a transmitting coil, a receiving coil and a rectification and control module;
the power transmission control and drive module is coupled with the transmitting coil, the receiving coil is coupled with the rectification and control module, the transmitting coil and the receiving coil are loosely coupled, and the second communication control module is coupled with the rectification and control module; and
the first antenna coil is arranged at a side of the transmitting coil, the second antenna coil is arranged at a side of the receiving coil, and the first antenna coil and the second antenna coil are located between the transmitting coil and the receiving coil.

8. The method according to claim 1 , wherein the first mode is a reader/writer mode, the second mode is a card emulation mode, and the third mode is a peer-to-peer mode.

9. The method according to claim 1 , wherein the first communication control module comprises a first matching network, a first Near Field Communication (NFC) chip and a first digital controller; and
the first matching network is coupled with the first antenna coil, the first NFC chip is coupled with the first matching network and the first digital controller, respectively, and the first digital controller is configured to control the first NFC chip to start to work in the first mode or the third mode.

10. The method according to claim 1 , wherein the second communication control module comprises a second matching network, a second NFC chip and a second digital controller; and
the second matching network is coupled with the second antenna coil, the second NFC chip is coupled with the second matching network and the second digital controller, respectively, and the second digital controller is configured to control the second NFC chip to start to work in the second mode or the third mode.

11. The method according to claim

Assignees

• Delta Electronics Shanghai Co

Inventors

• Liao Yongkai
• Wang Yibo
• Richter Ulrich
• Jiang Qing
• Xu Xuecong

Classifications

• H04B5/77 Primary

  for interrogation · CPC title

• H04B5/79 Primary

  for data transfer in combination with power transfer · CPC title

• H04B5/26

  using coils · CPC title

• H04B5/24

  Inductive coupling · CPC title