System and method for wireless charging

• US 10,615,625 B2
• Filed: 02/27/2017
• Issued: 04/07/2020
• Est. Priority Date: 02/29/2016
• Status: Active Grant

• Current Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Original Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Inventors: Li, Zhijie, Sun, Wei, Zhu, Dan
• Primary Examiner(s): Dunn, Drew A
• Assistant Examiner(s): Kebede, Tessema
• Application Number:
  US15/443,775
• Publication Number:
  US 20170250561A1
• Time in Patent Office: 1,135 Days
• Field of Search: 320108, 320104
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

Systems and methods are provided for wireless charging. The system includes an intelligent management device and a wireless charging transmitter. The intelligent management device is configured to: receive a wireless charging request from the mobile terminal; generate a wireless charging instruction according to the first location information of the mobile terminal and the charging location information of the wireless charging transmitter; and send the wireless charging instruction to the wireless charging transmitter. The wireless charging transmitter is configured to: receive the wireless charging instruction; determine a transmitting direction according to the direction information in the wireless charging instruction; and transmit a wireless energy wave in the transmitting direction.

Claims

1. A wireless charging system, comprising:

an intelligent management device and

at least two wireless charging transmitters, wherein the intelligent management device stores charging location information of each wireless charging transmitter;

the intelligent management device is configured to;

receive a wireless charging request from a mobile terminal, in which the wireless charging request comprises first location information of the mobile terminal;

identify a nearest wireless charging transmitter relative to the first location information of the mobile terminal;

generate a wireless charging instruction according to the first location information of the mobile terminal and the charging location information of the nearest wireless charging transmitter, wherein the wireless charging instruction comprises direction information of the mobile terminal relative to the nearest wireless charging transmitter; and

send the wireless charging instruction to the nearest wireless charging transmitter;

the intelligent management device is further configured to;

acquire changed first location information of the mobile terminal during the wireless charging;

identify a nearest wireless charging transmitter relative to the changed first location information;

send a charging stop instruction to the nearest wireless charging transmitter found last time, when the nearest wireless charging transmitter found this time is not same as the nearest wireless charging transmitter found last time; and

further configured to generate a wireless charging instruction again according to the first location information of the mobile terminal and the charging location information of the nearest wireless charging transmitter found this time;

send the wireless charging instruction to the nearest wireless charging transmitter found this time; and

the nearest wireless charging transmitter is configured to;

receive the wireless charging instruction;

determine a transmitting direction according to the direction information in the wireless charging instruction; and

transmit a wireless energy wave in the transmitting direction.

2. The system according to claim 1, wherein the intelligent management device is configured to:

acquire obstacle information on a charging path between the mobile terminal and the wireless charging transmitter during wireless charging;

send a charging suspending instruction to the wireless charging transmitter when the obstacle information indicates that an obstacle exists on the charging path.

3. The system according to claim 1, wherein the intelligent management device is configured to:

acquire changed first location information of the mobile terminal during wireless charging;

generate a wireless charging instruction again according to the changed first location information; and

send the wireless charging instruction to the wireless charging transmitter again.

4. The system according to claim 1, wherein the intelligent management device is configured to:

acquire obstacle information on a charging path between the mobile terminal and the nearest wireless charging transmitter during wireless charging;

send a charging suspending instruction to the nearest wireless charging transmitter, when the obstacle information indicates that an obstacle exists on the charging path; and

wherein the intelligent management device is further configured to;

re-determine a target wireless charging transmitter, in which there is no obstacle existing between the target wireless charging transmitter and the mobile terminal;

generate the wireless charging instruction according to the first location information of the mobile terminal and the charging location information of the target wireless charging transmitter;

send the wireless charging instruction to the target wireless charging transmitter.

5. The system according to claim 2, wherein the intelligent management device is configured to acquire the obstacle information on the charging path via at least one of the following:

an infrared sensor, an image capturing component, and the wireless charging transmitter, wherein the obstacle information indicate that the obstacle exists on the charging path.

6. The system according to claim 2, wherein the wireless charging transmitter is configured to acquire the obstacle information on the charging path via an infrared sensor;

and

wherein the wireless charging transmitter is further configured to report the obstacle information to the intelligent management device.

7. The system according to claim 1, wherein the wireless charging instruction further comprises a charging mode;

and

wherein the charging mode comprises one of;

sending the wireless energy wave continuously and sending the wireless energy wave periodically.

8. A method for wireless charging, comprising:

receiving, by an intelligent management device, a wireless charging request from a mobile terminal, wherein the wireless charging request comprises first location information of the mobile terminal, there are at least two wireless charging transmitters communicating with the intelligent management device, the intelligent management device stores the second location information of each wireless charging transmitter;

identifying a nearest wireless charging transmitter relative to the first location information of the mobile terminal by the intelligent management device;

generating, by the intelligent management device, a wireless charging instruction according to the first location information of the mobile terminal and second location information of the nearest wireless charging transmitter, wherein the wireless charging instruction comprises direction information of the mobile terminal relative to the nearest wireless charging transmitter;

sending, by the intelligent management device, the wireless charging instruction to the nearest wireless charging transmitter;

acquiring changed first location information of the mobile terminal by the intelligent management device;

identifying a nearest wireless charging transmitter according to the changed first location information by the intelligent management device;

sending a charging stop instruction to the nearest wireless charging transmitter found last time by the intelligent management device, in which the charging stop instruction is sent when the nearest wireless charging transmitter found this time is not same as the nearest wireless charging transmitter found last time;

generating a wireless charging instruction again according to the first location information of the mobile terminal and the second location information of the nearest wireless charging transmitter found this time by the intelligent management device; and

sending the wireless charging instruction to the nearest wireless charging transmitter found this time by the intelligent management device;

transmitting a wireless energy wave in the transmitting direction by the nearest wireless charging transmitter, wherein the transmitting direction is determined according to the direction information in the wireless charging instruction.

9. The method according to claim 8, further comprising:

acquiring obstacle information on a charging path between the mobile terminal and the wireless charging transmitter by the intelligent management device; and

sending a charging suspending instruction to the wireless charging transmitter by the intelligent management device, in which the charging suspending instruction is sent when the obstacle information indicates that an obstacle exists on the charging path.

10. The method according to claim 8, further comprising:

acquiring changed first location information of the mobile terminal by the intelligent management device; and

generating a wireless charging instruction again by the intelligent management device according to the changed first location information, and sending the wireless charging instruction to the wireless charging transmitter again by the intelligent management device.

11. The method according to claim 9, wherein acquiring obstacle information on a charging path between the mobile terminal and the wireless charging transmitter by the intelligent management device comprises:

acquiring, by the intelligent management device, the obstacle information on the charging path between the mobile terminal and the wireless charging transmitter via at least one of the following;

an infrared sensor, an image capturing component, and the wireless charging transmitter, wherein the obstacle information indicates that the obstacle exists on the charging path between the mobile terminal and the wireless charging transmitter.

12. The method according to claim 11, wherein, receiving by the intelligent management device the obstacle information reported by the wireless charging transmitter comprises:

acquiring by the wireless charging transmitter the obstacle information on the charging path via an infrared sensor;

reporting the obstacle information to the intelligent management device by the wireless charging transmitter; and

receiving the obstacle information reported by the wireless charging transmitter by the intelligent management device.

13. The method according to claim 8, further comprising:

acquiring the obstacle information on the charging path between the mobile terminal and the nearest wireless charging transmitter by the intelligent management device;

sending a charging suspending instruction to the nearest wireless charging transmitter by the intelligent management device, in which the charging suspending instruction is sent when the obstacle information indicates that an obstacle exists on the charging path;

re-determining a target wireless charging transmitter by the intelligent management device, in which there is no obstacle between the target wireless charging transmitter and the mobile terminal;

generating the wireless charging instruction according to the first location information of the mobile terminal and the second location information of the target wireless charging transmitter by the intelligent management device; and

sending the wireless charging instruction to the target wireless charging transmitter by the intelligent management device.

14. The method according to claim 13, wherein, acquiring the obstacle information on the charging path between the mobile terminal and the nearest wireless charging transmitter by the intelligent management device comprises:

acquiring by the intelligent management device the obstacle information on the charging path between the mobile terminal and the nearest wireless charging transmitter via at least one of the following;

an infrared sensor, an image capturing component, and the intelligent management device, where in the obstacle information indicates that the obstacle exists on the charging path between the mobile terminal and the nearest wireless charging transmitter.

15. The method according to the claim 14, wherein receiving the obstacle information reported by the nearest wireless charging transmitter by the intelligent management device comprises:

acquiring by the nearest wireless charging transmitter the obstacle information on the charging path via an infrared sensor;

reporting the obstacle information to the intelligent management device by the nearest wireless charging transmitter; and

receiving the obstacle information reported by the nearest wireless charging transmitter by the intelligent management device.

16. The method according to claim 8, wherein the wireless charging instruction further comprises a charging mode;

and

wherein the charging mode comprises one of;

sending the wireless energy wave continuously and sending the wireless energy wave periodically.

17. A wireless charging system, comprising:

an intelligent management device and a wireless charging transmitter, wherein the intelligent management device stores charging location information of the wireless charging transmitter;

the intelligent management device is configured to;

receive a wireless charging request from a mobile terminal, in which the wireless charging request comprises first location information of the mobile terminal;

generate a wireless charging instruction according to the first location information of the mobile terminal and the charging location information of the wireless charging transmitter, wherein the wireless charging instruction comprises direction information of the mobile terminal relative to the wireless charging transmitter; and

send the wireless charging instruction to the wireless charging transmitter, wherein the mobile terminal has an indoor positioning capability, and the first location information of the mobile terminal in the wireless charging request is obtained by the mobile terminal through performing a positioning on itself using the indoor positioning capability;

the intelligent management device is further configured to;

acquire changed first location information of the mobile terminal during the wireless charging;

identify a nearest wireless charging transmitter relative to the changed first location information;

send a charging stop instruction to the nearest wireless charging transmitter found last time, when the nearest wireless charging transmitter found this time is not same as the nearest wireless charging transmitter found last time; and

further configured to generate a wireless charging instruction again according to the first location information of the mobile terminal and the charging location information of the nearest wireless charging transmitter found this time;

send the wireless charging instruction to the nearest wireless charging transmitter found this time; and

the wireless charging transmitter is configured to;

receive the wireless charging instruction;

determine a transmitting direction according to the direction information in the wireless charging instruction; and

transmit a wireless energy wave in the transmitting direction.