Wireless charging method and system thereof

Abstract

The present disclosure relates to a wireless charging method and system thereof, wherein the wireless charging method comprises the steps of: (a) providing a charging device, wherein the charging device has at least one charging area for placing a smart device, the charging device is configured to charge the smart device when performing 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 area when performing a detection task; wherein the detection task comprises a plurality of detection subtasks; (b) performing a charging initialization procedure and a communication initialization procedure; and (c) performing the plurality of detection subtasks and at least one charging subtask, wherein the at least one charging subtask is interleaved in the plurality of detection subtasks.

Description

Technical Field

[0001] This disclosure relates to a wireless charging method and system, and more particularly to a wireless charging method and system with detection function. Background Technology

[0002] Existing wireless charging devices require detection of any foreign objects placed on them before or during power transmission. Furthermore, during normal charging, for safety reasons, these devices must continuously test for foreign objects and overheating, and frequently perform charging safety checks with the placed device to confirm whether charging should continue or if the charging power needs adjustment. Because existing wireless charging devices have relatively simple functionality, their software architecture can achieve complete functionality by sequentially executing Foreign Object Detection (FOD), overheat detection, and Wireless Charging Transmitter (WCT).

[0003] With market development, wireless charging technology has advanced rapidly, with not only increasing demands for charging power but also the growing application of fast charging technology. Future development will focus on intelligence and multi-load capabilities. For example, wireless charging devices can function as wireless interfaces for automobiles and mobile devices like smartphones, while also providing wireless charging functionality. A wireless charging device can charge multiple devices simultaneously. When a wireless charging device is charging a device placed on it, it cannot confirm whether the device is rechargeable, thus requiring simultaneous wireless detection. However, the time required for a complete detection is much longer than the cycle time of the aforementioned charging safety verification procedure. Therefore, if the time spent during the detection process exceeds this cycle time, the wireless charging device will automatically shut down and restart due to the lack of charging safety verification or prolonged communication interruption, continuing wireless charging intermittently and compromising charging quality. Conversely, if the charging safety verification procedure is prioritized when the cycle time arrives, a complete wireless detection cannot be performed in real time. If the device is not rechargeable and is not detected in real time, continuous charging can damage it.

[0004] Therefore, developing a wireless charging method and system that can improve upon the aforementioned existing technologies is an urgent need. Summary of the Invention

[0005] The purpose of this disclosure is to provide a wireless charging method and system that breaks down the task of performing wireless detection in the charging device into multiple detection subtasks, and interleaves the charging task among these subtasks. This allows for simultaneous wireless charging and wireless detection, ensuring charging quality and enabling real-time detection of the object to prevent damage.

[0006] According to the concept of this disclosure, this disclosure provides a wireless charging method, comprising the steps of: (a) providing a charging device, wherein the charging device has at least one charging area for placing a smart device, the charging device being configured to charge the smart device when performing a charging task, the charging task including at least one charging sub-task, and the charging device being configured to detect whether there is a detection object on the charging area when performing a detection task; wherein the detection task includes multiple detection sub-tasks; (b) executing a charging initialization procedure and a communication initialization procedure; and (c) executing multiple detection sub-tasks and at least one charging sub-task, wherein the at least one charging sub-task is executed interspersed among the multiple detection sub-tasks.

[0007] According to the concept of this disclosure, a wireless charging system is provided, including a charging device having at least one charging area for placing a smart device. The charging device charges the smart device when performing a charging task, which includes at least one charging sub-task. The charging device also detects whether an object is present on the charging area when performing a detection task, which includes multiple detection sub-tasks. The at least one charging sub-task is executed interspersed among the multiple detection sub-tasks. Attached Figure Description

[0008] Figure 1 This is a schematic diagram showing the positional relationship of a wireless charging system according to a preferred embodiment of this disclosure.

[0009] Figure 2 This is a schematic diagram showing the positional relationship of a wireless charging system according to another preferred embodiment of the present disclosure.

[0010] Figure 3 This is a schematic flowchart of a preferred embodiment of the wireless charging method of this disclosure.

[0011] Figure 4 This is a schematic flowchart of another preferred embodiment of the wireless charging method disclosed herein.

[0012] Figure 5 This is a schematic flowchart of another preferred embodiment of the wireless charging method disclosed herein.

[0013] Figure 6 This is a schematic flowchart of another preferred embodiment of the wireless charging method disclosed herein.

[0014] Figure 7This is a schematic flowchart of another preferred embodiment of the wireless charging method disclosed herein.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1: Wireless charging system

[0017] 10: Charging device

[0018] 11: Charging Area

[0019] 2: Intelligent devices

[0020] 3: Detected items

[0021] S1, S2, S3, S300, S301, S30n, S400, S401, S40n, S31, S32, S33, S34, S4: Steps Detailed Implementation

[0022] Some typical embodiments embodying the features and advantages of this disclosure will be described in detail in the following description. It should be understood that this disclosure can be varied in different implementations without departing from the scope of this disclosure, and the descriptions and illustrations therein are for illustrative purposes only and are not intended to limit this disclosure.

[0023] Figure 1 This is a schematic diagram showing the positional relationships of a wireless charging system according to a preferred embodiment of this disclosure. Figure 1 As shown, the wireless charging system 1 includes a charging device 10, which has at least one charging area 11 for placing a smart device 2. The charging device 10 is configured to charge the smart device 2 when performing a charging task, and the charging task includes at least one charging sub-task. In some embodiments, the charging sub-task includes at least one of a communication protocol task, a charging power calibration task, and a charging power output task. The charging device 10 is configured to detect whether a detection object 3 is present on the charging area 11 when performing a detection task. The detection task includes multiple detection sub-tasks, and the charging sub-task is executed interspersed among the multiple detection sub-tasks. The smart device 2 can be, for example, but not limited to, a mobile phone; the detection object 3 can be, for example, but not limited to, an NFC card, as long as it has a common communication transmission protocol that allows the charging device 10 to perform the detection task. Furthermore, by splitting the detection task into multiple detection sub-tasks and interspersing the charging sub-tasks among the multiple detection sub-tasks, wireless charging and wireless detection can be simultaneously achieved. This avoids the time spent performing a complete wireless detection exceeding the charging safety confirmation cycle time, which would cause the wireless charging device to continuously restart, making wireless charging uninterrupted. Furthermore, because the detection task is performed completely and in real time, damage to the object being detected can be prevented.

[0024] It should be noted that, Figure 1The placement of the smart device 2 and the detection object 3 is merely an example and is not limited thereto. The smart device 2 can be placed at various locations within the charging area 11; as long as it is within the charging area 11, the smart device 2 can be charged. Similarly, NFC detection is required for the entire area of ​​the charging area 11, and is not limited to this. Figure 1 The charging area 11 can accommodate multiple smart devices 2 or detection objects 3 simultaneously, provided there is sufficient space; there is no limit to the actual number that can be placed. Furthermore, although... Figure 1 The image shows a charging area 11, but in some embodiments, the charging area 11 may be placed with one or more smart devices 2, which may perform charging and detection tasks simultaneously.

[0025] Please refer to 2. Figure 2 This is a schematic diagram showing the positional relationship of a wireless charging system according to another preferred embodiment of the present disclosure, wherein... Figure 1 Components that are identical in the same way are indicated by the same reference numerals and will not be described again here. In some embodiments, the charging device 10 has two charging areas 11, which can be used to place the smart device 2 and the detection object 3 respectively, or to place two smart devices 2 respectively. The number of charging areas 11 is not limited to one or two as described above; there can be more than two to place multiple smart devices 2 and detection objects 3, which can perform charging and detection tasks simultaneously. In some embodiments, if there is sufficient space, multiple smart devices 2 and detection objects 3 can also be placed in the charging area 11 at the same time, and there is no limit to the actual number that can be placed.

[0026] In some embodiments, the wireless charging system 1 needs to meet the wireless charging Qi protocol.

[0027] In some embodiments, the detection task also includes enabling the charging device 10 to communicate with the detection object 3. For example, the charging device 10 has a built-in wireless communication chip (such as an NFC chip) to communicate with the detection object 3 (such as a mobile phone NFC) to achieve functions such as identity authentication and task assignment. For example, after recognizing an authorized mobile phone, it can be given the function of a car key to achieve functions such as keyless engine start.

[0028] The execution cycle of the charging subtask is the charging check cycle, and the time required for the charging device 10 to execute one detection subtask is the subtask time. The subtask time is shorter than the charging check cycle to avoid the time spent executing the detection subtask exceeding the cycle time of the charging subtask. By setting the execution time of each detection subtask to be shorter than the charging check cycle, the time interval between adjacent charging subtasks can be kept short, thus ensuring the uninterrupted operation of the charging subtasks and the continuity of the wireless charging process.

[0029] In some embodiments, the charging subtask is interspersed among multiple detection subtasks, and the charging subtask is implemented by interrupting the detection subtask, wherein the interrupt trigger time is less than the charging check cycle. In this embodiment, for example, the charging device 10 executes the detection task in the main program. When an interrupt occurs, the charging device 10 pauses the execution of the detection task and instead executes the charging subtask. After the charging subtask is completed, it jumps back to the main program and continues to execute the detection task at the previously paused point, waiting for the next interrupt to arrive, and repeats continuously. That is, it can be considered that after the charging subtask is completed, another detection subtask is executed, and this process is repeated continuously, with the execution of the charging task ensured by interrupting the detection task. Similarly, by setting the interrupt trigger cycle to be less than the charging detection cycle, that is, the execution time of the detection subtask is less than the charging detection cycle, it can be ensured that the time interval between the execution of adjacent charging subtasks is short, thereby ensuring the uninterrupted execution of the charging subtask on a macroscopic level and ensuring the continuity of the wireless charging process.

[0030] In some embodiments, the charging device 10 can set the priority of charging tasks to be higher than that of detection tasks in the operating system of the wireless charging system 1. That is, the charging device 10 prioritizes the execution of charging sub-tasks. After the charging sub-tasks are completed, the operating system will release control of the charging tasks and simultaneously initiate the execution of the detection tasks. Furthermore, a timer is set after the completion of the charging sub-tasks. The detection sub-tasks are executed within the time before the charging check cycle is reached. The timer must be less than or equal to the charging check cycle. For example, when the execution time of a detection sub-task reaches the charging check cycle, the operating system automatically switches control of the CPU to the charging tasks. After the execution of a charging sub-task is completed, control is released back to the detection tasks.

[0031] In some embodiments, the charging device 10 is also configured to detect the presence of foreign objects (not shown) on the charging area 11 during the execution of a foreign object detection procedure, to prevent such foreign objects from interfering with the charging or detection tasks of the charging device 10. Foreign objects refer to non-chargeable objects that absorb radio waves and convert them into heat energy or otherwise dissipate energy. Examples include ferrous metals, such as coins. The charging device 10 is also configured to detect the temperature of the charging device 10 during the execution of a temperature detection procedure, to prevent the wireless charging system 1 from malfunctioning due to excessively high temperatures. Furthermore, in some embodiments, the foreign object detection procedure and the temperature detection procedure may each have multiple foreign object detection subtasks and multiple temperature detection subtasks, with the charging subtasks interspersed within these subtasks. This prevents the charging task from being interrupted during the execution of the foreign object detection procedure or the temperature detection procedure. The implementation scheme of the charging subtask being interspersed among multiple foreign object detection program subtasks and multiple temperature detection program subtasks can be the same as the implementation scheme of the charging subtask being interspersed among multiple detection subtasks. For example, it can be achieved by interrupting or setting priorities, etc., which will not be elaborated here.

[0032] Please see Figure 3 , Figure 3 This is a flowchart illustrating a preferred embodiment of the wireless charging method of this disclosure. The wireless charging method of this disclosure is applicable to the aforementioned wireless charging system 1. The wireless charging method of this disclosure includes steps S1, S2, and S3. In step S1, a charging device 10 is provided, wherein the charging device 10 has at least one charging area 11 for placing a smart device 2. The charging device 10 is configured to charge the smart device 2 when performing a charging task, the charging task including at least one charging sub-task. The charging device 10 is configured to detect whether there is a detection object 3 on the charging area 11 when performing a detection task. The detection task includes multiple detection sub-tasks. In step S2, a charging initialization procedure and a communication initialization procedure are executed. In step S3, multiple detection sub-tasks and at least one charging sub-task are executed, wherein the charging sub-task is interspersed among the multiple detection sub-tasks. Step S3 is repeated after step S3. The charging sub-task has a charging check cycle, and the time required to execute one detection sub-task is one sub-task time, which is less than the charging check cycle.

[0033] In some embodiments, such as Figure 4As shown, step S3 includes sub-steps. For example, in step S300, a detection sub-task is executed. In step S400, a charging sub-task is executed. In step S301, the next detection sub-task is executed. In step S401, the next charging sub-task is executed. This continues until step S30n, where a detection sub-task is executed. In step S40n, a charging sub-task is executed. In this embodiment, for example, steps S300 to S30n constitute a complete detection task, and steps S400 to S40n constitute a complete charging task. The steps in the figure are merely examples, and the steps of specific detection or charging tasks are not limited to these. During the entire wireless charging process, step S3 is repeatedly executed multiple times, wherein the charging sub-task is interspersed among multiple detection sub-tasks.

[0034] In some embodiments, in step S3, the charging subtask is implemented through an interrupt detection subtask; wherein, the interrupt trigger time is set to be less than the charging check cycle, the charging device 10 executes the detection task, and when the interrupt occurs, the charging device 10 suspends the execution of the detection task and instead executes the charging subtask. In some embodiments, in step S3, the charging subtask is executed first, wherein the operating system allocates control to the charging task, thereby executing the charging subtask first. After the charging subtask is completed, the operating system automatically releases the CPU control to the detection task. The execution of the detection task is timed, and the detection subtask can be executed before the timeout reaches the charging check cycle. When the timeout reaches the charging check cycle, the operating system re-grants the CPU control to the charging task to ensure the continued execution of the charging task. In some embodiments, the execution time of the detection task is determined by the time when the charging task releases control, and the operating system coordinates the use of the CPU. For example, the operating system prioritizes the allocation of CPU control to the charging task, that is, it prioritizes the execution of the charging subtask. After the execution is completed, the operating system releases control to the detection task. At this time, the execution time of the detection task is determined by the time when the charging task releases control. That is, when the charging task needs to be executed, the operating system will immediately switch the CPU control to the charging task.

[0035] In some embodiments, such as Figure 5As shown, step S3 includes sub-steps S31 and S32. In step S31, the delay time is continuously recorded after the detection sub-task is executed. In step S32, it is determined whether the delay time is greater than a preset time. When the determination result of step S32 is yes, another detection sub-task is executed and the delay time is reset. When the determination result of step S32 is no, the charging sub-task is executed and step S32 is repeated. In some embodiments, for example, when the charging device 10 detects whether there is a detection object 3, it needs to transmit a signal to the detection object 3, and the charging device 10 needs to wait for the response from the detection object 3. The waiting process generally takes 2 to 3 seconds. Therefore, the charging sub-task can be executed during the waiting process. The execution time of the charging sub-task is generally short. After each execution, it is determined whether the waiting time has reached the preset time. If the preset time has not been reached, the charging sub-task can continue to be executed. If the preset time has been reached, the detection sub-task can be executed.

[0036] In some embodiments, such as Figure 6 As shown, step S3 includes sub-steps S33 and S34. In step S33, one of multiple detection sub-tasks is executed. In step S34, it is determined whether the event has been completed. If the determination result of step S34 is yes, another detection sub-task is executed; if the determination result of step S34 is no, a charging sub-task is executed, and step S34 is repeated. In this embodiment, the completion of the event can be, for example, but not limited to, the completion of a detection task or a detection sub-task. It should be noted that the present invention does not limit the marker of the completion of the event. For example, in some embodiments, successful communication between the charging device 10 and the detection object 3 can be used as a marker of the completion of the event. Therefore, in some embodiments, the charging sub-task can be executed before the event occurs, and the next detection sub-task is executed when the event occurs.

[0037] In some embodiments, such as Figure 7 As shown, the wireless charging method further includes step S4. In step S4, a foreign object detection procedure is executed to detect whether there is a foreign object on the charging area, and a temperature detection procedure is executed to detect the temperature of the charging device. Step S3 is repeated after step S4. Furthermore, the foreign object detection procedure and the temperature detection procedure may each have multiple foreign object detection procedure subtasks and multiple temperature detection procedure subtasks, and the charging subtasks are executed interspersed within the multiple foreign object detection procedure subtasks and multiple temperature detection procedure subtasks.

[0038] It should be noted that this disclosure does not limit the wireless charging device 10 to implementing the charging task by interspersing it among multiple detection subtasks in one manner. For example, in some embodiments, some charging subtasks are implemented through interrupts, and some charging subtasks are implemented through event completion, etc., and this disclosure does not impose any restrictions on this.

[0039] In summary, this disclosure provides a wireless charging method and system that breaks down the task of performing wireless detection in the charging device into multiple detection subtasks, and interleaves the charging task within these subtasks. This allows for simultaneous wireless charging and wireless detection, preventing the time spent performing complete wireless detection from exceeding the charging safety confirmation cycle, which could cause the wireless charging device to repeatedly restart and disrupt the continuous wireless charging process. Furthermore, because the detection task is executed completely and in real-time, damage to the object being detected can be prevented.

[0040] It should be noted that the above are merely preferred embodiments for illustrating this disclosure, and this disclosure is not limited to the described embodiments. The scope of this disclosure is determined by the claims. Furthermore, this disclosure can be modified in various ways by those skilled in the art, but all such modifications will not depart from the protection sought by the claims.

Claims

1. A wireless charging method, comprising the steps of: (a) A charging device is provided, wherein the charging device has at least one charging area for placing a smart device, the charging device charging the smart device when performing a charging task, the charging task including at least one charging sub-task, and the charging device detecting whether a detection object is present on the charging area when performing a detection task; wherein... The detection task includes multiple detection sub-tasks, and the object being detected has a common communication transmission protocol that allows the charging device to perform the detection task. (b) Execute a charging initialization procedure and a communication initialization procedure; as well as (c) Execute the plurality of detection subtasks and the at least one charging subtask, wherein the at least one charging subtask is executed interspersed among the plurality of detection subtasks.

2. The wireless charging method as claimed in claim 1, further comprising the step of: (d) Execute a foreign object detection procedure to detect whether a foreign object exists on the charging area, and execute a temperature detection procedure to detect the temperature of the charging device.

3. The wireless charging method of claim 2, wherein the foreign object detection program and the temperature detection program each have a plurality of foreign object detection program subtasks and a plurality of temperature detection program subtasks, and the at least one charging subtask is executed interspersed among the plurality of foreign object detection program subtasks and the plurality of temperature detection program subtasks.

4. The wireless charging method of claim 1, wherein the charging subtask has a charging check cycle, the time required to execute the check subtask once is a subtask time, and the subtask time is less than the charging check cycle.

5. The wireless charging method of claim 4, wherein the at least one charging subtask is interspersed among the plurality of detection subtasks and implemented by triggering an interrupt, wherein, The interrupt trigger time is less than the charging check cycle.

6. The wireless charging method of claim 4, wherein step (c) further comprises a sub-step: (c1) After executing any of the detection subtasks, continuously record a delay time; and (c2) Determine whether the delay time is greater than a preset time. If the determination result is yes, execute another detection subtask and reset the delay time. If the determination result is no, execute the charging subtask and repeat step (c2).

7. The wireless charging method of claim 4, wherein step (c) further comprises a sub-step: (c1) Execute one of the multiple detection subtasks; and (c2) Determine whether an event has been completed. If the result is yes, execute another detection subtask. If the result is no, execute the charging subtask and repeat step (c2).

8. The wireless charging method of claim 4, wherein the priority of the charging task is set higher than that of the detection task; in step (c), the charging sub-task is executed first, and after the charging sub-task is completed, a timer is set, and before the timer reaches the charging check cycle, at least one of the plurality of detection sub-tasks is executed.

9. The wireless charging method of claim 1, wherein the charging subtask includes at least one of a communication protocol task, a charging power calibration task, and a charging power output task.

10. The wireless charging method of claim 1, wherein the detection task further includes enabling the charging device to communicate with the detected object.

11. The wireless charging method of claim 1, wherein the wireless charging method satisfies the Qi wireless charging protocol.

12. A wireless charging system, comprising: A charging device having at least one charging area for placing a smart device; in, The charging device is configured to charge the smart device when performing a charging task, which includes at least one charging sub-task. The charging device is configured to detect whether there is a detection object on the charging area when performing a detection task, which includes multiple detection sub-tasks, and the at least one charging sub-task is executed interspersed among the multiple detection sub-tasks. The detection object has a common communication transmission protocol that allows the charging device to perform the detection task.

13. The wireless charging system of claim 12, wherein the charging device architecture detects the presence of a foreign object on the charging area when performing a foreign object detection procedure, and detects the temperature of the charging device when performing a temperature detection procedure.

14. The wireless charging system of claim 13, wherein the foreign object detection program and the temperature detection program each have a plurality of foreign object detection program subtasks and a plurality of temperature detection program subtasks, and the at least one charging subtask is executed interspersed among the plurality of foreign object detection program subtasks and the plurality of temperature detection program subtasks.

15. The wireless charging system of claim 12, wherein the charging subtask has a charging check cycle, the time required to execute the check subtask once is a subtask time, and the subtask time is less than the charging check cycle.

16. The wireless charging system of claim 15, wherein the at least one charging subtask is interspersed among the plurality of detection subtasks and implemented by triggering an interrupt, wherein, If the interruption time is less than the charging check cycle, the charging device will execute the detection subtask first, and then execute the charging subtask.

17. The wireless charging system of claim 15, wherein the charging device has a higher priority in performing the charging task than the detection task, and the charging device performs the charging sub-task first, and a timer is provided after the charging sub-task is completed, and the charging device performs the detection sub-task again before the timer reaches the charging check cycle.

18. The wireless charging system of claim 12, wherein the charging subtask includes at least one of a communication protocol task, a charging power calibration task, and a charging power output task.

19. The wireless charging system of claim 12, wherein the detection task further includes enabling the charging device to communicate with the detected object.

20. The wireless charging system of claim 12, wherein the wireless charging system satisfies the Qi wireless charging protocol.

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