# US 12,191,679 B2 · Wireless charging method and system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,191,679 B2 - Document ID: US12191679B2 - Status: Granted - Kind: B2 - Application number: 17/443,765 - Filed: 2021-07-27 - Published: 2022-02-10 - Granted: 2025-01-07 - Earliest claimed: 2020-08-10 - Assignees: Delta Electronics (Shanghai) Co., Ltd. - Applicants: Delta Electronics (Shanghai) Co., Ltd. - Inventors: Bin Li; Nan Ye; Jianhong Zeng - Web page: https://patentgrep.com/patent/US12191679B2 ## CPC - H02J 50/60: responsive to the presence of foreign objects, e.g. detection of living beings - H02J 7/65: against overtemperature - H02J 7/977: {of the battery} - H02J 50/10: using inductive coupling - 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} - H02J 7/50: acting upon multiple batteries simultaneously or sequentially - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A wireless charging method includes: (a) providing a charging device, wherein the charging device includes at least one charging region for a smart device to place thereon, the charging device is configured to charge the smart device when executing a charging task, the charging task includes at least one charging subtask, and the charging device is configured to detect whether there is a detection object on the charging region when executing a detection task, and the detection task includes a plurality of detection subtasks; (b) executing a charging initialization program and a communication initialization program; and (c) executing the plurality of detection subtasks and at least one charging subtask, wherein the at least one charging subtask is interspersed and executed among the plurality of detection subtasks. ## Claims ### Claim 1 A wireless charging method, comprising: (a) providing a charging device, wherein the charging device has at least one charging region for a smart device to be placed thereon, the charging device is configured to charge a smart device when executing a charging task, the charging task comprises at least one charging subtask, and the charging device is configured to detect whether there is a detection object on the charging region when executing a detection task, and the detection task comprises a plurality of detection subtasks; (b) executing a charging initialization program and a communication initialization program; and (c) executing the plurality of detection subtasks and at least one charging subtask, wherein the at least one charging subtask is interspersed and executed among the plurality of detection subtasks, wherein the changing subtask has a charging detection cycle, the time for executing each of the plurality of detection subtasks once is a subtask time, and the subtask time is set to be less than the charging detection cycle. ### Claim 2 (depends on 1) The wireless charging method according to claim 1, comprising: (d) executing a foreign object detection procedure to detect whether there is a foreign object on the charging region and executing a temperature detection procedure to detect the temperature of the charging device. ### Claim 3 (depends on 2) The wireless charging method according to claim 2, wherein the foreign object detection procedure and the temperature detection procedure comprise a plurality of foreign object detection subtasks and a plurality of temperature detection subtasks respectively, and the at least one charging subtask is interspersed and executed among the plurality of foreign object detection subtasks and the plurality of temperature detection subtasks. ### Claim 4 (depends on 1) The wireless charging method according to claim 1, wherein the at least one charging subtask is interspersed and executed among the plurality of detection subtasks, the charging subtask is executed through interrupting the plurality of detection subtasks, and the interruption time is set to be less than the charging detection cycle. ### Claim 5 (depends on 1) The wireless charging method according to claim 1, wherein the step (c) further comprises steps of: (c1) recording a delay time after the execution of one of the plurality of detection subtasks; and (c2) determining whether the delay time is greater than a preset time, wherein another one of the plurality of detection subtasks is executed and the delay time is reset if the determination result is satisfied, the charging subtask is executed and the step (c2) is performed again if the determination result is not satisfied. ### Claim 6 (depends on 1) The wireless charging method according to claim 1, wherein the step (c) further comprises steps of: (c1) executing one of the plurality of detection subtasks; and (c2) determining whether an event is completed, wherein another one of the plurality of detection subtasks is executed if the determination result is satisfied, the charging subtask is executed and the step (c2) is performed again if the determination result is not satisfied. ### Claim 7 (depends on 1) The wireless charging method according to claim 1, wherein the priority of the charging task is set to be higher than the detection task; in the step (c), the charging subtask is executed in priority, and a counting time is set after the charging subtask is completed, and one of the plurality of detection subtasks is executed before the counting time reaches the charging detection cycle. ### Claim 8 (depends on 1) The wireless charging method according to claim 1, wherein the charging subtask comprises at least one of a communication protocol task, a charging power calibration task and a charging power output task. ### Claim 9 (depends on 1) The wireless charging method according to claim 1, wherein the detection task further comprises communication and transmission between the charging device and the detection object. ### Claim 10 (depends on 1) The wireless charging method according to claim 1, wherein the wireless charging system needs to satisfy the Qi wireless charging protocol. ### Claim 11 A wireless charging system, comprising a charging device, wherein the charging device has at least one charging region for a smart device to be placed thereon, wherein the charging device is configured to charge the smart device when executing a charging task, the charging task comprises at least one charging subtask, and the charging device is configured to detect whether there is a detection object on the charging region when executing a detection task, the detection task comprises a plurality of detection subtasks, and the at least one charging subtask is interspersed and executed among the plurality of detection subtasks, wherein the charging subtask has a charging detection cycle, the time for executing each of the plurality of detection subtasks once is a subtask time, and the subtask time is set to be less than the charging detection cycle. ### Claim 12 (depends on 11) The wireless charging system according to claim 11, wherein the charging device is configured to detect whether there is a foreign object on the charging region when executing a foreign object detection procedure, and the charging device is configured to detect the temperature of the charging device when executing a temperature detection procedure. ### Claim 13 (depends on 12) The wireless charging system according to claim 12, wherein the foreign object detection procedure and the temperature detection procedure comprise a plurality of foreign object detection subtasks and a plurality of temperature detection subtasks respectively, and the at least one charging subtask is interspersed and executed among the plurality of foreign object detection subtasks and the plurality of temperature detection subtasks. ### Claim 14 (depends on 11) The wireless charging system according to claim 11, wherein the at least one charging subtask is interspersed and executed among the plurality of detection subtasks, and the charging subtask is executed through interrupting the plurality of detection subtasks, the interruption time is set to be less than the charging detection cycle, the charging device executes one of the plurality of detection subtasks first and then executes the charging subtask. ### Claim 15 (depends on 11) The wireless charging system according to claim 11, wherein the priority of executing the charging task is set to be higher than the detection task, the charging device executes the charging subtask in priority, there is a counting time after the charging subtask is completed, and one of the plurality of detection subtasks is executed before the counting time reaches the charging detection cycle. ### Claim 16 (depends on 11) The wireless charging system according to claim 11, wherein the charging subtask comprises at least one of a communication protocol task, a charging power calibration task and a charging power output task. ### Claim 17 (depends on 11) The wireless charging system according to claim 11, wherein the detection task further comprises communication and transmission between the charging device and the detection object. ### Claim 18 (depends on 11) The wireless charging system according to claim 11, wherein the wireless charging system needs to satisfy the Qi wireless charging protocol.